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Length: 64000 (0xfa00) Types: RcTekst Names: »42-I2459.WP«
└─⟦481be0aa0⟧ Bits:30008870 Diskette med 42-I og 44-RT dokumenter └─⟦this⟧ »42-I2459.WP«
╱04002d4e0a0006000000000201413140000000000000000000000000000000000000000000000000050f19232d37414b555f69737d8791ff04╱ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ┆b0┆ RC855 Operating Guide↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ A/S REGNECENTRALEN af 1979 February 1984↲ Information Department RCSL No. 42-i2459↲ ════════════════════════════════════════════════════════════════════════ ↓ ↲ ↲ Author: Pierce C. Hazelton↲ ↲ Keywords: RC855, Operation↲ ↲ Abstract: ┆84┆Describes the general operation of the RC855 terminal. ↓ ┆19┆┆8b┆┄┄Covers: ergonomic features; operating controls; cable ↓ ┆19┆┆8b┆┄┄connections; the keyboard; selftesting; application ↓ ┆19┆┆8b┆┄┄program loading; status messages; the start-up pro-↓ ┆19┆┆8b┆┄┄cedure; error handling; ordinary maintenance; disk ↓ ┆19┆┆8b┆┄┄systems and diskettes. Meant to be supplemented by ↓ ┆19┆┆8b┆┄┄operating guides for specific RC855 application pro-↓ ┆19┆┆8b┆┄┄grams.↲ ↲ (38 printed pages)↲ ↲ ↲ ↲ ↲ ↲ ┆a1┆Notice↲ ↲ ┆84┆CP/M is a registered trademark of Digital Research.↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ i↲ ↲ ┆b0┆┆a1┆┆e1┆ ┆e1┆┆a1┆FOREWORD↲ ↲ ┆84┆First edition: RCSL No. 42-i1686.↲ ↲ ┆84┆Second edition: RCSL No. 42-i2459.↲ ┆84┆This edition supersedes the first edition. The text has ↓ ┆19┆┆89┆┄┄been brought up to date and completely rewritten. Impor- ↓ ┆19┆┆89┆┄┄tant additions include descriptions of RC890 based ter- ↓ ┆19┆┆89┆┄┄minal clusters, the extended selftest, and new program ↓ ┆19┆┆89┆┄┄load media.↲ ↲ ↲ Pierce C. Hazelton↲ A/S REGNECENTRALEN af 1979, February 1984↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ii↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ iii↲ ↲ ┆a1┆┆b0┆TABLE OF CONTENTS PAGE↲ ↲ ┆b0┆1. INTRODUCTION┆f0┆ ............................................ 1↲ 1.1 The RC855 Terminal in Brief ........................ 1↲ 1.2 Stand-Alone Terminals .............................. 2↲ 1.3 RC855 Based Terminal Clusters ...................... 2↲ 1.4 RC890 Based Terminal Clusters ...................... 3↲ ↲ ┆b0┆2. THE RC855 TERMINAL┆f0┆ ...................................... 5↲ 2.1 Display Unit ....................................... 5↲ 2.1.1 Ergonomic Features and Controls ............. 5↲ 2.1.2 Back Panel .................................. 6↲ 2.1.2.1 Cable Connectors and Operating↲ Controls ........................... 7↲ 2.1.2.2 Disk System Option ................. 7↲ 2.1.2.3 Printer Option ..................... 8↲ 2.2 Keyboard ........................................... 8↲ 2.2.1 Operating Features and Controls ............. 8↲ 2.2.2 Locking Device Option ....................... 9↲ 2.2.3 Badge Reader Option ......................... 9↲ 2.2.4 The Keyboard Proper ......................... 9↲ 2.2.4.1 General Functions .................. 10↲ 2.2.4.2 Alphameric Keys .................... 11↲ 2.2.4.3 Numeric Pad ........................ 11↲ 2.2.4.4 Attention Keys ..................... 11↲ 2.2.4.5 Editing Keys ....................... 12↲ 2.3 General Operating Information ...................... 13↲ 2.3.1 Power On/Off ................................ 13↲ 2.3.2 Reset and Selftest .......................... 13↲ 2.3.3 Program Loading ............................. 14↲ 2.3.3.1 Medium Defined by NVM Parameter .... 15↲ 2.3.3.2 Medium Defined by Operator ......... 15↲ 2.3.3.3 Examples of Load Medium Spe-↲ cification ......................... 15↲ 2.3.4 Status Messages ............................. 16↲ ↲ ┆b0┆3. OPERATING AND ERROR-HANDLING PROCEDURES┆f0┆ ................. 18↲ 3.1 Start-Up Procedure ................................. 18↲ 3.2 Selftest Phase ..................................... 18↲ 3.3 Program Load Phase ................................. 19↲ 3.3.1 Internal Memory Boards ...................... 19↲ 3.3.2 Disk Systems ................................ 20↲ 3.3.3 RcCircuit (Local Terminal Network) .......... 21↲ 3.3.3.1 Menu Transmission .................. 21↲ 3.3.3.2 Program Selection .................. 22↲ 3.3.3.3 Program Loading .................... 22↲ 3.4 Application Program Identification ................. 23↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆b0┆┆b0┆┆f0┆ iv↲ ┆b0┆┆b0┆┆a1┆TABLE OF CONTENTS (continued) PAGE↲ ↲ ┆b0┆4. MISCELLANY┆f0┆┆f0┆┆f0┆ .............................................. 25↲ 4.1 Maintenance ........................................ 25↲ 4.1.1 Cleaning .................................... 25↲ 4.1.2 Replacing the Fuse .......................... 25↲ 4.2 Diskettes .......................................... 26↲ 4.2.1 Care of Diskettes ........................... 26↲ 4.2.2 Write-Protection of Diskettes ............... 26↲ ↲ ↲ ┆a1┆┆b0┆┆b0┆┆a1┆A┆b0┆PPENDICES┆e1┆:↲ ↲ ┆a1┆┆b0┆┆e1┆A. REFERENCES┆f0┆ .............................................. 27↲ ↲ ┆b0┆B. EXTENDED SELFTEST┆f0┆ ....................................... 29↲ B.1 Test Procedure ..................................... 29↲ B.2 Tests Performed .................................... 30↲ B.3 Error Codes ........................................ 31↲ ↲ ┆b0┆C. SURVEY OF STATUS MESSAGES┆f0┆ ............................... 32↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆14┆┆b3┆↲ ┆14┆┆b3┆ ┆0b┆↲ ┆a1┆┆b0┆1. INTRODUCTION↲ ↲ ┆84┆This RC855 operating guide describes operation of the ↓ ┆19┆┆89┆┄┄RC855 terminal up to the point where a loaded RC855 ↓ ┆19┆┆89┆┄┄application program is started; it is meant to be used ↓ ┆19┆┆89┆┄┄together with the operating guide or user's guide for ↓ ┆19┆┆89┆┄┄the RC855 application program in question.↲ ↲ ┆84┆The RC855 terminal is introduced in the remaining sec┄↓ ┆19┆┆89┆┄┄tions of this chapter, and then described in detail in ↓ ┆19┆┆89┆┄┄Chapter 2. The operation of the RC855 is explained in ↓ ┆19┆┆89┆┄┄Chapter 3. Chapter 4 describes day-to-day maintenance of ↓ ┆19┆┆89┆┄┄the RC855 and the care of diskettes. Information about ↓ ┆19┆┆89┆┄┄matters other than these will be found in the referenced ↓ ┆19┆┆89┆┄┄publications, which are listed in Appendix A.↲ ↲ ┆84┆It should be noted that this operating guide describes ↓ ┆19┆┆89┆┄┄the current version of the RC855 terminal, and that some ↓ ┆19┆┆89┆┄┄of the features mentioned are not available on older ↓ ┆19┆┆89┆┄┄versions.↲ ↲ ↲ ┆a1┆┆b0┆1.1 The RC855 Terminal in Brief↲ ↲ ┆84┆The microcomputer based RC855 terminal comprises a ↓ ┆19┆┆89┆┄┄display unit and a keyboard. The display unit is pro┄↓ ┆19┆┆89┆┄┄vided with signal cable connectors for a disk system, a ↓ ┆19┆┆89┆┄┄printer, a host computer system, and a local terminal ↓ ┆19┆┆89┆┄┄network. The keyboard may be equipped with a locking ↓ ┆19┆┆89┆┄┄device or a badge reader.↲ ↲ ┆84┆The present operating guide describes RC855 operation ↓ ┆19┆┆89┆┄┄from a hardware point of view. This operation is the ↓ ┆19┆┆89┆┄┄same for all RC855 terminals, apart from differences in ↓ ┆19┆┆89┆┄┄the manner in which the RC855 application program is ↓ ┆19┆┆89┆┄┄loaded (1.2 and 1.4).↲ ↲ ┆84┆The RC855 is ┆a1┆reset┆e1┆ when power is applied, and thereafter ↓ ┆19┆┆89┆┄┄whenever the reset button is pressed. On being reset, ↓ ┆19┆┆89┆┄┄the RC855 automatically performs a built-in ┆a1┆selftest┆e1┆. An ↓ ┆19┆┆89┆┄┄RC855 application program can then be loaded into the ↓ ┆19┆┆89┆┄┄RAM (random-access memory) of the terminal and executed.↲ ↲ ┆84┆The RC855 application program might, for example, be the ↓ ┆19┆┆89┆┄┄RC855 IBM 3270 BSC emulator, which permits the RC855 ↓ ┆19┆┆89┆┄┄operator to communicate with 3270 oriented application ↓ ┆19┆┆89┆┄┄programs running on a remote host computer.↲ ↲ ┆84┆RC855 application programs are loaded from various ↓ ┆19┆┆89┆┄┄media: internal memory boards, disk systems, and the ↓ ┆19┆┆89┆┄┄local terminal network.↲ ↲ ┆84┆The current load medium as well as several other confi┄↓ ┆19┆┆89┆┄┄guration parameters for the individual terminal are ↓ ┆8c┆┆83┆┆b0┆↓ ┆19┆┆89┆┄┄stored in the NVM (nonvolatile memory) of each RC855, ↓ ┆19┆┆89┆┄┄where they are unaffected by the application and removal ↓ ┆19┆┆89┆┄┄of power. The values of these ┆a1┆NVM parameters┆e1┆ can be set ↓ ┆19┆┆89┆┄┄to suit the requirments of the particular RC855 operator ↓ ┆19┆┆89┆┄┄as well as those of any terminal cluster of which the ↓ ┆19┆┆89┆┄┄RC855 in question is a part.↲ ↲ ┆84┆The values of the NVM parameters are normally set by the ↓ ┆19┆┆89┆┄┄RC855 installation engineer, but it is always possible ↓ ┆19┆┆89┆┄┄to change them by means of the RC855 configurator. This ↓ ┆19┆┆89┆┄┄utility program exists in several versions, as deter┄↓ ┆19┆┆89┆┄┄mined by the relevant RC855 application program. For de┄↓ ┆19┆┆89┆┄┄scriptions of the RC855 configurator, see (3), (8), (9), ↓ ┆19┆┆89┆┄┄and (10).↲ ↲ ┆84┆The first twenty-four lines in the RC855 display screen ↓ ┆19┆┆89┆┄┄picture are used for a possible application menu and for ↓ ┆19┆┆89┆┄┄interaction between the RC855 operator and the applica┄↓ ┆19┆┆89┆┄┄tion program. The bottom (twenty-fifth) line, which is ↓ ┆19┆┆89┆┄┄called the ┆a1┆status line┆e1┆, is used for messages to the ↓ ┆19┆┆89┆┄┄operator.↲ ↲ ↲ ┆a1┆┆a1┆┆b0┆1.2 Stand-Alone Terminals↲ ↲ ┆84┆The RC855 may be programmed as a ┆a1┆dedicated terminal┆e1┆ ↓ ┆19┆┆89┆┄┄(dedicated to remote host communication). Here, the ↓ ┆19┆┆89┆┄┄RC855 application program is the IBM 3270 BSC emulator ↓ ┆19┆┆89┆┄┄or the TTY emulator, which is loaded from an internal ↓ ┆19┆┆89┆┄┄memory board permanently mounted in the display unit.↲ ↲ ┆84┆The RC855 may also be programmed as a ┆a1┆work station┆e1┆. ↓ ┆19┆┆89┆┄┄Here, the RC855 application program is the CP/M operat┄↓ ┆19┆┆89┆┄┄ing system, which is loaded from a disk system connected ↓ ┆19┆┆89┆┄┄to the display unit. The RC855 may then be alternately ↓ ┆19┆┆89┆┄┄used for remote host communication and local processing ↓ ┆19┆┆89┆┄┄applications.↲ ↲ ┆84┆A stand-alone RC855 dedicated terminal or work station ↓ ┆19┆┆89┆┄┄can always function as an IBM 3270 BSC CU/Display Sta┄↓ ┆19┆┆89┆┄┄tion (cf. Sect. 1.3).↲ ↲ ┆84┆The RC855 can also be part of a terminal cluster, based ↓ ┆19┆┆89┆┄┄either on the RC855 itself or on the RC890 control unit.↲ ↲ ↲ ┆a1┆┆b0┆1.3 RC855 Based Terminal Clusters↲ ↲ ┆84┆A terminal cluster based entirely on the RC855 may ↓ ┆19┆┆89┆┄┄comprise a maximum of eight dedicated terminals and/or ↓ ┆19┆┆89┆┄┄work stations, interconnected by means of ┆a1┆RcCircuit┆e1┆, a ↓ ┆19┆┆89┆┄┄multidropped terminal network.↲ ↲ ┆84┆A cluster of RC855 terminals running the IBM 3270 BSC ↓ ┆19┆┆89┆┄┄emulator will communicate with a host computer system in ↓ ┆19┆┆89┆┄┄the same manner as an IBM 3270 cluster control unit (CU) ↓ ┆19┆┆89┆┄┄using the BSC communication line protocol. One of the ↓ ┆8c┆┆83┆┆c8┆↓ ┆19┆┆89┆┄┄terminals in the cluster runs the "CU/Display Station" ↓ ┆19┆┆89┆┄┄part of the emulator; this is the ┆a1┆primary terminal┆e1┆. The ↓ ┆19┆┆89┆┄┄other terminals in the cluster run the "Display Station" ↓ ┆19┆┆89┆┄┄part of the emulator; these are ┆a1┆secondary terminals┆e1┆. ↓ ┆19┆┆89┆┄┄From the user's viewpoint the two types of terminals ↓ ┆19┆┆89┆┄┄have the same functions.╞ ↲ ↲ ┆84┆By means of a 4-line synchronous V.24 modem multiplexer, ↓ ┆19┆┆89┆┄┄called the RC800-19, as many as four primary terminals ↓ ┆19┆┆89┆┄┄may share a single modem and communication line to a ↓ ┆19┆┆89┆┄┄host system.↲ ↲ ┆84┆Two kinds of network connections can be used in conjunc┄↓ ┆19┆┆89┆┄┄tion with the RC855 IBM 3270 BSC emulator (and IBM ↓ ┆19┆┆89┆┄┄2780/3780 BSC emulator):↲ ↲ - ┆84┆DATEL connections, where a V.24 interface is used ↓ ┆19┆┆8b┆┄┄between the RC855 terminal and the connection equip┄↓ ┆19┆┆8b┆┄┄ment (modem) and the data network is an ordinary ↓ ┆19┆┆8b┆┄┄telephone network;↲ ↲ - ┆84┆DATEX connections, where an X.21 interface is used ↓ ┆19┆┆8b┆┄┄between the RC855 terminal and the connection equip┄↓ ┆19┆┆8b┆┄┄ment (DCE) and the data network is a true public data ↓ ┆19┆┆8b┆┄┄network.↲ ↲ ┆84┆A terminal is always physically present in a cluster, by ↓ ┆19┆┆89┆┄┄virtue of the RcCircuit connection; logically, however, ↓ ┆19┆┆89┆┄┄a terminal can leave the cluster as follows:↲ ↲ ┆84┆A dedicated terminal may leave the cluster and, as a ↓ ┆19┆┆89┆┄┄stand-alone RC855 equipped with its own host connection, ↓ ┆19┆┆89┆┄┄function instead as an asynchronous TTY terminal. This ↓ ┆19┆┆89┆┄┄feature is not available on older versions of the RC855 ↓ ┆19┆┆89┆┄┄(DSU619 and earlier).↲ ↲ ┆84┆A work station may also leave the cluster and be used ↓ ┆19┆┆89┆┄┄instead for local processing or, if equipped with its ↓ ┆19┆┆89┆┄┄own host connection, remote host communication (IBM 3270 ↓ ┆19┆┆89┆┄┄BSC, IBM 2780/3780 BSC, and TTY emulators).↲ ↲ ┆84┆A primary terminal may not leave the cluster, i.e. run ↓ ┆19┆┆89┆┄┄another program or be powered off, so long as a seconda┄↓ ┆19┆┆89┆┄┄ry terminal remains logically in the cluster.↲ ↲ ↲ ┆a1┆┆b0┆1.4 RC890 Based Terminal Clusters↲ ↲ ┆84┆A terminal cluster based on the RC890 control unit (CU) ↓ ┆19┆┆89┆┄┄may comprise a maximum of thirty-two dedicated terminals ↓ ┆19┆┆89┆┄┄and/or work stations, connected by means of RcCircuit. ↓ ┆19┆┆89┆┄┄These RC855 terminals may access host systems using the ↓ ┆19┆┆89┆┄┄SNA/SDLC as well as the BSC protocol for remote connect┄↓ ┆19┆┆89┆┄┄ion of IBM 3270 Display Stations.↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆84┆Application programs for RC855 terminals connected to ↓ ┆19┆┆89┆┄┄the RC890 control unit are downline loaded from disk┄↓ ┆19┆┆89┆┄┄ette, after selection from a user-specified application ↓ ┆19┆┆89┆┄┄menu. Work stations may be used for local processing as ↓ ┆19┆┆89┆┄┄well as remote host communication (cf. Sect. 2.3.3).↲ ↲ ┆84┆For a detailed description of the various configuration ↓ ┆19┆┆89┆┄┄possibilities in the RC855 terminal system, see (1).↲ ↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆a1┆┆b0┆2. THE RC855 TERMINAL↲ ↲ ┆84┆The RC855 terminal comprises a display unit and a key┄↓ ┆19┆┆89┆┄┄board. These two basic components are shown in Figure 1, ↓ ┆19┆┆89┆┄┄and described respectively in Sections 2.1 and 2.2. ↓ ┆19┆┆89┆┄┄Section 2.3 contains general operating information, ↓ ┆19┆┆89┆┄┄which is essential to an understanding of the procedures ↓ ┆19┆┆89┆┄┄described in Chapter 3.↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ Fig. 1. RC855 Terminal, Display Unit and Keyboard.↲ ↲ ↲ ┆a1┆┆b0┆2.1 Display Unit↲ ↲ ┆84┆The display unit has a number of ergonomic features and ↓ ┆19┆┆89┆┄┄controls. The back panel of the base of the display unit ↓ ┆19┆┆89┆┄┄contains various cable connectors and operating con┄↓ ┆19┆┆89┆┄┄trols.↲ ↲ ↲ ┆a1┆┆b0┆2.1.1 Ergonomic Features and Controls↲ ↲ . ┆84┆┆a1┆┆e1┆┆b0┆Display Screen Horizontal Angle↲ ↲ ┆84┆The horizontal angle of the display screen can be ↓ ┆19┆┆8b┆┄┄adjusted by turning the display unit (which is mounted ↓ ┆19┆┆8b┆┄┄on a swivel) from side to side.↲ ↲ . ┆a1┆┆e1┆┆b0┆Display Screen Vertical Angle↲ ↲ ┆84┆The vertical angle of the display screen can be ad┄↓ ┆19┆┆8b┆┄┄justed by pushing (pulling) the display screen housing ↓ ┆19┆┆8b┆┄┄down (up) at the back.↲ ↲ ┆8c┆┆83┆┆d0┆↓ . ┆a1┆┆e1┆┆b0┆Display Screen Height↲ ↲ ┆84┆On the base of the display unit, on the right and ↓ ┆19┆┆8b┆┄┄toward the front, are two buttons marked by arrows. ↓ ┆19┆┆8b┆┄┄With power applied to the RC855 (2.3.1), the display ↓ ┆19┆┆8b┆┄┄screen housing can be raised (lowered) relative to the ↓ ┆19┆┆8b┆┄┄base by holding the button marked by the up (down) ↓ ┆19┆┆8b┆┄┄arrow depressed.↲ ↲ . ┆a1┆┆e1┆┆b0┆Picture Brightness and Contrast↲ ↲ ┆84┆Under the display screen housing, at the front and on ↓ ┆19┆┆8b┆┄┄the right, are two knurled wheels. With power applied ↓ ┆19┆┆8b┆┄┄to the RC855 (2.3.1), the wheel to the right should be ↓ ┆19┆┆8b┆┄┄turned until the picture brightness of the display ↓ ┆19┆┆8b┆┄┄screen is satisfactory. Then the wheel to the left ↓ ┆19┆┆8b┆┄┄should be turned until the picture contrast is satis┄↓ ┆19┆┆8b┆┄┄fatory. The current picture should be used as a guide.↲ ↲ ┆84┆Note that extreme brightness will shorten the life of ↓ ┆19┆┆8b┆┄┄the display screen, and may also lead to headache and ↓ ┆19┆┆8b┆┄┄eye irritation. The brightness and contrast of the ↓ ┆19┆┆8b┆┄┄picture should be adjusted as the light in the room ↓ ┆19┆┆8b┆┄┄changes.↲ ↲ . ┆a1┆┆e1┆┆b0┆Picture Timeout↲ ↲ ┆84┆Extreme brightness may in time cause the layer of ↓ ┆19┆┆8b┆┄┄phosphorus on the display screen to burn through, ↓ ┆19┆┆8b┆┄┄usually in intensified display fields.↲ ↲ ┆84┆Since intensified display fields are common in (3270 ↓ ┆19┆┆8b┆┄┄oriented) applications that employ formatted display ↓ ┆19┆┆8b┆┄┄screens, the RC855 IBM 3270 BSC emulator includes an ↓ ┆19┆┆8b┆┄┄automatic picture timeout feature. The use of this ↓ ┆19┆┆8b┆┄┄feature is defined by an NVM parameter.↲ ↲ . ┆a1┆┆e1┆┆b0┆Cursor Form↲ ↲ ┆84┆The cursor may take any of four different forms on the ↓ ┆19┆┆8b┆┄┄display screen, as defined by an NVM parameter.↲ ↲ ↲ ┆a1┆┆b0┆2.1.2 Back Panel↲ ↲ ┆84┆Figure 2 shows the back panel of the base of the display ↓ ┆19┆┆89┆┄┄unit.↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ┆84┆Fig. 2. RC855 Terminal, Display Unit Back Panel.↲ ↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆a1┆┆b0┆2.1.2.1 Cable Connectors and Operating Controls↲ ↲ ┆84┆┆a1┆Label┆e1┆ ┆a1┆Description↲ ↲ KEYBOARD connector for cable to keyboard↲ ↲ RESET reset button (2.3.2)↲ ↲ CIRCUIT ┆84┆connector for cable to RcCircuit ↓ ┆19┆┆9e┆┄┄(local terminal network) plug ↓ ┆19┆┆9e┆┄┄outlet↲ ↲ LINE II (PRINTER) ┆84┆connector for cable to printer ↓ ┆19┆┆9e┆┄┄(2.1.2.3 )↲ ↲ LINE I ┆84┆connector for cable to host compu┄↓ ┆19┆┆9e┆┄┄ter system, modem, RC800-19 modem ↓ ┆19┆┆9e┆┄┄multiplexer, or DCE (data circuit┄-↓ ┆19┆┆9e┆┄┄terminating equipment)↲ ↲ DISKETTE I/O ┆84┆connector for cable to disk system↓ ┆19┆┆9e┆┄┄ (2.1.2.2)↲ ↲ 1A SB ┆84┆connector for power cable, with ↓ ┆19┆┆9e┆┄┄fuse (2.3.1)↲ ↲ ON ┆84┆power switch (2.3.1)↲ ↲ ┆84┆For a detailed description of the back panel of the ↓ ┆19┆┆89┆┄┄display unit, see (2).↲ ↲ ↲ ┆a1┆┆b0┆2.1.2.2 Disk System Option↲ ↲ ┆84┆A disk system may be connected to the display unit as ↓ ┆19┆┆89┆┄┄required. The system may comprise at most two diskette ↓ ┆19┆┆89┆┄┄drives of the same type, i.e. 5 1/4 inch or 8 inch, and ↓ ┆19┆┆89┆┄┄one hard disk drive. In a combination of diskette and ↓ ┆19┆┆89┆┄┄hard disk drives, the former are connected through the ↓ ┆19┆┆89┆┄┄latter.↲ ↲ ┆84┆A disk system must be connected to a power source and ↓ ┆19┆┆89┆┄┄powered on before it can be used.↲ ↲ ┆84┆Several different drives are used in the disk systems. ↓ ┆19┆┆89┆┄┄Of the various lamps on these drives, the most important ↓ ┆19┆┆89┆┄┄is the lamp that tells when the drive is selected for ↓ ┆19┆┆89┆┄┄reading or writing on the disk or diskette. The disk in ↓ ┆19┆┆89┆┄┄a hard disk drive is permanently mounted in the latter. ↓ ┆19┆┆89┆┄┄Diskettes, on the other hand, are inserted in and remo┄↓ ┆19┆┆89┆┄┄ved from the diskette drive by the operator. The "se┄↓ ┆19┆┆89┆┄┄lect" lamp is important, because diskettes must never be ↓ ┆19┆┆89┆┄┄removed or inserted while this lamp is lit.↲ ↲ ┆8c┆┆83┆┆b0┆↓ ┆84┆When a diskette is inserted in a diskette drive, the ↓ ┆19┆┆89┆┄┄label on the cover of the diskette must face up and away ↓ ┆19┆┆89┆┄┄from the drive. The diskette is inserted by pushing it ↓ ┆19┆┆89┆┄┄gently into the drive slot until it is seated.↲ ↲ ┆84┆The drive slots of the different diskette drives in the ↓ ┆19┆┆89┆┄┄disk system are "opened" and "closed" in various ways, ↓ ┆19┆┆89┆┄┄e.g. by means of a lid or latch. The slot must be closed ↓ ┆19┆┆89┆┄┄in order to read or write on the inserted diskette. When ↓ ┆19┆┆89┆┄┄the slot is opened again, the inserted diskette is ↓ ┆19┆┆89┆┄┄unseated, so that it can be removed from the drive.↲ ↲ ┆84┆Write-protection of diskettes is described together with ↓ ┆19┆┆89┆┄┄the care of diskettes in Chapter 4.↲ ↲ ↲ ┆a1┆┆b0┆2.1.2.3 Printer Option↲ ↲ ┆84┆A printer may be connected to the display unit as re┄↓ ┆19┆┆89┆┄┄quired. Several different printers are available. Prin┄t-↓ ┆19┆┆89┆┄┄er operation is described in the operating guide accom┄↓ ┆19┆┆89┆┄┄panying the printer in question.↲ ↲ ┆84┆A printer must be connected to a power source and po┄↓ ┆19┆┆89┆┄┄wered on before it can be used.↲ ↲ ┆84┆If a printer is connected to an RC855 terminal, the ↓ ┆19┆┆89┆┄┄values of certain NVM parameters must be set accordingly ↓ ┆19┆┆89┆┄┄(see, for example, (8)).↲ ↲ ┆84┆In some application program systems and terminal clus┄↓ ┆19┆┆89┆┄┄ter configurations, a printer is available as a common ↓ ┆19┆┆89┆┄┄resource within the cluster, i.e. it may be used by more ↓ ┆19┆┆89┆┄┄than one terminal. The RC855 operator should investigate ↓ ┆19┆┆89┆┄┄such matters before proceeding to operate a terminal with ↓ ┆19┆┆89┆┄┄a connected printer.↲ ↲ ↲ ┆a1┆┆b0┆2.2 Keyboard↲ ↲ ┆84┆The keyboard is connected to the display unit by means ↓ ┆19┆┆89┆┄┄of a combined power and signal cable (2.1.2.1). As this ↓ ┆19┆┆89┆┄┄cable is one meter in length, the keyboard can be moved ↓ ┆19┆┆89┆┄┄about with considerable freedom. The back panel of the ↓ ┆19┆┆89┆┄┄keyboard contains two operating controls. The keyboard ↓ ┆19┆┆89┆┄┄may be equipped with a locking device or, alternatively, ↓ ┆19┆┆89┆┄┄with a badge reader. The keyboard is available in six ↓ ┆19┆┆89┆┄┄(national) versions.↲ ↲ ↲ ┆a1┆┆b0┆2.2.1 Operating Features and Controls↲ ↲ . ┆a1┆┆e1┆┆b0┆Key Click↲ ↲ ┆84┆The keyboard can emit a clicking sound to indicate ↓ ┆19┆┆8b┆┄┄that a key has been pressed correctly. This feature is ↓ ┆19┆┆8b┆┄┄enabled/disabled by means of the switch labeled CLICK ↓ ┆19┆┆8b┆┄┄ON/OFF on the back panel.↲ ↲ ┆8c┆┆83┆┆d8┆↓ . ┆a1┆┆e1┆┆b0┆Alarm Beep↲ ↲ ┆84┆The keyboard emits a beeping sound to indicate that an ↓ ┆19┆┆8b┆┄┄illegal operation has been attempted. The alarm beep ↓ ┆19┆┆8b┆┄┄may also be sounded on the initiative of an applica┄↓ ┆19┆┆8b┆┄┄tion program running on a remote host computer.↲ ↲ ┆84┆The alarm beep cannot be disabled, but the volume of ↓ ┆19┆┆8b┆┄┄the beep emitted (as well as that of the key click) ↓ ┆19┆┆8b┆┄┄can be adjusted by means of the knurled wheel labeled ↓ ┆19┆┆8b┆┄┄VOLUME on the back panel.↲ ↲ ↲ ┆a1┆┆b0┆2.2.2 Locking Device Option↲ ↲ ┆84┆The keyboard may be equipped with a locking device as a ↓ ┆19┆┆8a┆┄┄security measure. The device is operated by inserting a ↓ ┆19┆┆8a┆┄┄key and turning it in the lock. The key cannot be re┄↓ ┆19┆┆8a┆┄┄moved from the lock so long as the keyboard is active. ↓ ┆19┆┆8a┆┄┄The removal of the key has the same effect as physical ↓ ┆19┆┆8a┆┄┄disconnection of the keyboard.↲ ↲ ↲ ┆a1┆┆b0┆2.2.3 Badge Reader Option↲ ↲ ┆84┆The keyboard may be equipped with a badge reader as a ↓ ┆19┆┆89┆┄┄security measure. The reader is operated by inserting an ↓ ┆19┆┆89┆┄┄operator identification badge or card (magnetic-striped ↓ ┆19┆┆89┆┄┄document) into the slot of the reader.↲ ↲ ┆84┆The operation of the badge reader is fully described in ↓ ┆19┆┆89┆┄┄the operating guide for the RC855 IBM 3270 BSC emulator, ↓ ┆19┆┆89┆┄┄which supports the use of such devices (8). The use of a ↓ ┆19┆┆89┆┄┄badge reader requires that the value of an NVM parameter ↓ ┆19┆┆89┆┄┄be set accordingly.↲ ↲ ↲ ┆a1┆┆b0┆2.2.4 The Keyboard Proper↲ ↲ ┆84┆The keyboard is supplied in different versions depending ↓ ┆19┆┆89┆┄┄on the required (national) character set. Figure 3 shows ↓ ┆19┆┆89┆┄┄the general layout of the keyboard (US English version). ↓ ┆19┆┆89┆┄┄For a description of all of the available versions of ↓ ┆19┆┆89┆┄┄the keyboard, see (11).↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ ↲ Fig. 3. ┆84┆RC855 Terminal, Keyboard General Layout (US ↓ ┆19┆┆91┆┄┄English)↲ ↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆a1┆┆b0┆2.2.4.1 General Functions↲ ↲ . ┆a1┆┆e1┆┆b0┆Key Click↲ ↲ ┆84┆See Section 2.2.1.↲ ↲ . ┆a1┆┆e1┆┆b0┆Alarm Beep↲ ↲ ┆84┆See Section 2.2.1.↲ ↲ . ┆a1┆┆e1┆┆b0┆Inhibition of Keyboard Use↲ ↲ ┆84┆The use of the keyboard may be temporarily inhibited ↓ ┆19┆┆8b┆┄┄as defined by the application program. This is normal┄↓ ┆19┆┆8b┆┄┄ly indicated by a message on the status line of the ↓ ┆19┆┆8b┆┄┄display screen.↲ ↲ . ┆a1┆┆e1┆┆b0┆Keys with Lamps↲ ↲ ┆84┆The following keys are provided with a LED (light-↓ ┆19┆┆8b┆┄┄emitting diode) lamp: LOCK, SELCT, USM, PRINT, and INS ↓ ┆19┆┆8b┆┄┄MODE. The function of the lamp (with the exception of ↓ ┆19┆┆8b┆┄┄LOCK) is defined by the application program.↲ ↲ . ┆a1┆┆e1┆┆b0┆Automatic Repetition↲ ↲ ┆84┆When a key is held depressed for more than three-↓ ┆19┆┆8b┆┄┄quarters of a second, the relevant character code is ↓ ┆19┆┆8b┆┄┄repeatedly generated at the rate of 20 characters per ↓ ┆19┆┆8b┆┄┄second. The automatic repetition feature does not ↓ ┆19┆┆8b┆┄┄apply to the three auxiliary keys, which are described ↓ ┆19┆┆8b┆┄┄below.↲ ↲ . ┆a1┆┆e1┆┆b0┆Auxiliary Keys↲ ↲ ┆84┆An auxiliary key is always used together with another, ↓ ┆19┆┆8b┆┄┄code-generating key. The combination of the two keys ↓ ┆19┆┆8b┆┄┄causes generation of an alternative code (e.g. the ↓ ┆19┆┆8b┆┄┄code for a capital rather than a small letter). There ↓ ┆19┆┆8b┆┄┄are three auxiliary keys, labeled SHIFT, LOCK, and ↓ ┆19┆┆8b┆┄┄CTRL. The SHIFT and CTRL keys are held depressed while ↓ ┆19┆┆8b┆┄┄the code-generating key is pressed.↲ ↲ SHIFT ┆84┆The SHIFT key has three different functions:↲ ↲ 1. ┆84┆Together with an alphameric key on the main ↓ ┆19┆┆94┆┄┄keyboard, to generate the upper case code for ↓ ┆19┆┆94┆┄┄an alphabetic character key or the upper ↓ ┆19┆┆94┆┄┄character code for a dual character key.↲ ↲ 2. ┆84┆As described in Sections 2.2.4.3 and 2.2.4.4.↲ ↲ ┆8c┆┆83┆┆a0┆↓ 3. ┆84┆Together with a specific key, to modify the ↓ ┆19┆┆95┆┄┄normal function of that key. The alternative ↓ ┆19┆┆95┆┄┄function so obtained is described, following ↓ ┆19┆┆95┆┄┄the description of the normal function of ↓ ┆19┆┆95┆┄┄the key, in the operating guide for the ↓ ┆19┆┆95┆┄┄relevant application program.↲ ↲ LOCK ┆84┆The LOCK key causes the main keyboard to operate ↓ ┆19┆┆90┆┄┄in the alpha-lock mode (in which case the lamp on ↓ ┆19┆┆90┆┄┄the key is lit). The SHIFT function is then ↓ ┆19┆┆90┆┄┄applied automatically to all alphameric keys ↓ ┆19┆┆90┆┄┄labeled with a single alphabetic character. (The ↓ ┆19┆┆90┆┄┄SHIFT key itself can, of course, still be used ↓ ┆19┆┆90┆┄┄together with the dual character keys). The main ↓ ┆19┆┆90┆┄┄keyboard will remain in the alpha-lock mode until ↓ ┆19┆┆90┆┄┄the LOCK key is pressed again.↲ ↲ ┆84┆If the main keyboard always operates in the ↓ ┆19┆┆90┆┄┄alpha-lock mode, as defined by an NVM parameter, ↓ ┆19┆┆90┆┄┄the LOCK key is not used.↲ ↲ CTRL ┆84┆The CTRL (control) key is used mainly together ↓ ┆19┆┆90┆┄┄with a function key to perform a system function. ↓ ┆19┆┆90┆┄┄Here, the combination of two keys serves to ↓ ┆19┆┆90┆┄┄minimize the unintentional activation of such ↓ ┆19┆┆90┆┄┄functions. By way of example, the key combination ↓ ┆19┆┆90┆┄┄CTRL CLEAR may be used when the RC855 IBM 3270 ↓ ┆19┆┆90┆┄┄BSC emulator is running to reset the terminal.↲ ↲ ↲ ┆a1┆┆b0┆2.2.4.2 Alphameric Keys↲ ↲ ┆84┆The alphameric keys generate codes corresponding to the ↓ ┆19┆┆89┆┄┄alphabetic, numeric, or special character or characters ↓ ┆19┆┆89┆┄┄with which each key is labeled, either directly or ↓ ┆19┆┆89┆┄┄together with the SHIFT key. Any restriction on the use ↓ ┆19┆┆89┆┄┄of these keys is described in the operating guide for ↓ ┆19┆┆89┆┄┄the relevant application program.↲ ↲ ↲ ┆a1┆┆b0┆2.2.4.3 Numeric Pad↲ ↲ ┆84┆The cluster of keys to the right of the main keyboard ↓ ┆19┆┆89┆┄┄includes a numeric pad, designed to facilitate the entry ↓ ┆19┆┆89┆┄┄of numeric data. Besides the decimal digits, the numeric ↓ ┆19┆┆89┆┄┄pad contains a minus sign, space, and a decimal point ↓ ┆19┆┆89┆┄┄character. An NVM parameter defines whether the decimal ↓ ┆19┆┆89┆┄┄point character is generated as a period (.) or comma ↓ ┆19┆┆89┆┄┄(,).↲ ↲ ┆84┆┆a1┆┆e1┆┆b0┆Note┆e1┆┆f0┆ that the keys on the numeric pad labeled with the ↓ ┆19┆┆89┆┆81┆┄decimal digits 1..9 are used together with the SHIFT key ↓ ┆19┆┆89┆┆81┆┄to generate the codes for the program functions PF1..PF9 ↓ ┆19┆┆89┆┆81┆┄(2.2.4.4).↲ ↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆a1┆┆b0┆2.2.4.4 Attention Keys↲ ↲ ┆84┆The attention keys are found mostly on the separate row ↓ ┆19┆┆89┆┄┄above the main keyboard. The function of these keys ↓ ┆19┆┆89┆┄┄depends entirely on the application program, i.e. not ↓ ┆19┆┆89┆┄┄only, say, the RC855 IBM 3270 BSC emulator, but also ↓ ┆19┆┆89┆┄┄the application program running on the remote host ↓ ┆19┆┆89┆┄┄computer. The following is a simple list of the atten┄↓ ┆19┆┆89┆┄┄tion keys:↲ ↲ ┆e1┆┆e1┆ ┆84┆┆a1┆┆e1┆┆b0┆Label┆e1┆ ┆a1┆┆e1┆ Comment┆e1┆↲ ↲ SELCT Select key, with lamp.↲ ↲ CLEAR Clear key.↲ ↲ PA1..PA5 Program Access keys.↲ ↲ ┆84┆┆b0┆Note┆f0┆ that the keys labeled PA1..PA5 are used ↓ ┆19┆┆96┆┆81┆┄together with SHIFT to generate the codes ↓ ┆19┆┆96┆┆81┆┄for PA6..PA10.↲ ↲ USM Unsolicited Message key, with lamp.↲ ↲ PF10..PF14 Program Function keys.↲ ↲ ┆84┆┆b0┆Note┆f0┆ that the keys on the numeric pad ↓ ┆19┆┆95┆┆81┆┄labeled 1..9 are used together with SHIFT to ↓ ┆19┆┆95┆┆81┆┄genera┄te the codes for PF1..PF9.↲ ↲ CURSR SELCT Cursor Select key.↲ ↲ PRINT Print key, with lamp.↲ ↲ ESC Escape key.↲ ↲ RESET Reset key.↲ ↲ SEND Send key.↲ ↲ ↲ ┆a1┆┆b0┆2.2.4.5 Editing Keys↲ ↲ ┆84┆The editing keys, which are found mostly in the cluster ↓ ┆19┆┆89┆┄┄to the right of the main keyboard, are used to move the ↓ ┆19┆┆89┆┄┄cursor about the display screen and to edit data dis┄↓ ┆19┆┆89┆┄┄played on the screen. The function of these keys depends ↓ ┆19┆┆89┆┄┄on the application program in question. The following is ↓ ┆19┆┆89┆┄┄a simple list of the editing keys:↲ ↲ ┆a1┆┆e1┆┆b0┆Label┆e1┆ ┆1f┆┆a1┆┆e1┆Comment↲ ↲ ┆84┆┆84┆┆a1┆┆e1┆┆b0┆Keys to move the cursor:↲ ↲ ┆84┆┆84┆One position right.↲ ↲ One position left (backspace).↲ ↲ Several positions right (tabulation).↲ ↲ ┆8c┆┆83┆┆e0┆↓ Several positions left (back tabulation).↲ ↲ ┆84┆One position (line) down.↲ ↲ ┆84┆One position (line) up.↲ ↲ Home position.↲ ↲ New line (return).↲ ↲ ┆a1┆┆a1┆┆e1┆┆b0┆Keys to edit the data┆e1┆:↲ ↲ INS MODE Insert Character Mode key, with lamp.↲ ↲ ┆84┆INS LINE Insert Line key.↲ ↲ DEL CHAR Delete Character key.↲ ↲ DEL LINE Delete Line key.↲ ↲ ERASE FIELD Erase to End of Field key.↲ ↲ ERASE INPUT Erase Input Fields key.↲ ↲ FM Field Mark key.↲ ↲ DUP Duplicate key.↲ ↲ MARK ┆84┆Mark String key.↲ ↲ MOVE ┆84┆Move String key.↲ ↲ ↲ ┆a1┆┆b0┆2.3 General Operating Information↲ ↲ ┆84┆This section contains information essential to an under┄↓ ┆19┆┆89┆┄┄standing of the procedures described in Chapter 3.↲ ↲ ↲ ┆a1┆┆b0┆2.3.1 ┆84┆Power On/Off↲ ↲ ┆84┆With the power cable properly connected, the power ↓ ┆19┆┆89┆┄┄switch can be pressed to apply power to the display unit ↓ ┆19┆┆89┆┄┄and the connected keyboard (2.1.2.1 ). The power switch ↓ ┆19┆┆89┆┄┄will light, and remain lit as long as the power is on. ↓ ┆19┆┆89┆┄┄Power is removed from the display unit and keyboard by ↓ ┆19┆┆89┆┄┄pressing the same switch again.↲ ↲ ┆84┆The application of power will cause a terminal reset ↓ ┆19┆┆89┆┄┄(2.3.2).↲ ↲ ┆84┆The replacement of the fuse in the power cable connector ↓ ┆19┆┆89┆┄┄(2.1.2.1 ) is described under maintenance in Chapter 4.↲ ↲ ┆84┆Disk systems and printers are powered on and off sepa┄↓ ┆19┆┆89┆┄┄rately (2.1.2.2 and 2.1.2.3).↲ ↲ ↲ ┆8c┆┆83┆┆d0┆↓ ┆a1┆┆b0┆2.3.2 Reset and Selftest↲ ↲ ┆84┆The RC855 terminal is reset when power is applied, and ↓ ┆19┆┆89┆┄┄thereafter whenever the reset button (2.1.2.1) is ↓ ┆19┆┆89┆┄┄pressed. When certain application programs are running, ↓ ┆19┆┆89┆┄┄e.g. the RC855 IBM 3270 BSC emulator, the terminal can ↓ ┆19┆┆89┆┄┄also be reset by pressing the CTRL and CLEAR keys ↓ ┆19┆┆89┆┄┄(2.2.4.1).↲ ↲ ┆84┆On being reset, the terminal automatically executes a ↓ ┆19┆┆89┆┄┄built-in selftest, called the ┆a1┆power-up selftest┆e1┆, which ↓ ┆19┆┆89┆┄┄comprises the following:↲ ↲ ┆84┆- PROM (programmable read-only memory) checksum test;↲ ↲ ┆84┆- RAM (random-access memory) memory test.↲ ↲ ┆84┆If no error is detected by the power-up selftest, an ↓ ┆19┆┆89┆┄┄RC855 application program is loaded into the RAM of the ↓ ┆19┆┆89┆┄┄terminal (2.3.3).↲ ↲ ┆84┆To perform a thorough check of the RC855 terminal in ↓ ┆19┆┆89┆┄┄approximately two minutes, the operator can run the ↓ ┆19┆┆89┆┄┄┆a1┆extended selftest┆e1┆, as described in Appendix B.↲ ↲ ↲ ┆a1┆┆b0┆2.3.3 Program Loading↲ ↲ ┆84┆On successful completion of the power-up selftest, an ↓ ┆19┆┆89┆┄┄RC855 application program is loaded from the specified ↓ ┆19┆┆89┆┄┄load medium, which must, of course, be present in order ↓ ┆19┆┆89┆┄┄for loading to take place. If no error occurs during ↓ ┆19┆┆89┆┄┄program loading, the RC855 application program is star┄t-↓ ┆19┆┆89┆┄┄ed, whereupon it identifies itself on the display ↓ ┆19┆┆89┆┄┄screen.↲ ↲ ┆84┆Three kinds of media are used for the loading of RC855 ↓ ┆19┆┆89┆┄┄application programs:↲ ↲ . ┆a1┆┆e1┆┆b0┆Internal Memory Boards↲ ↲ ┆84┆Application programs are loaded automatically from ↓ ┆19┆┆8b┆┄┄PROMs on the CPU (central processing unit ) circuit ↓ ┆19┆┆8b┆┄┄board or from PROMs on a special circuit board. These ↓ ┆19┆┆8b┆┄┄PROMs are called respectively MIC PROMs and IML PROMs.↲ ↲ . ┆a1┆┆e1┆┆b0┆Disk Systems↲ ↲ ┆84┆The CP/M operating system is loaded from a connected ↓ ┆19┆┆8b┆┄┄diskette drive or hard disk drive. Program loading ↓ ┆19┆┆8b┆┄┄from diskette is described in detail in (3), (4), (5), ↓ ┆19┆┆8b┆┄┄(6), and (7).↲ ↲ . ┆a1┆┆e1┆┆b0┆RcCircuit (Local Terminal Network)↲ ↲ ┆84┆Following the receipt of a menu from the RC890 control ↓ ┆19┆┆8b┆┄┄unit, a default application program is automatically ↓ ┆8c┆┆83┆┆c8┆↓ ┆19┆┆8b┆┄┄loaded or an application program selected from the ↓ ┆19┆┆8b┆┄┄menu is loaded. This program may be loaded downline ↓ ┆19┆┆8b┆┄┄from the RC890 or locally from a disk system. For a ↓ ┆19┆┆8b┆┄┄detailed description, see (12).↲ ↲ ┆84┆The "specified load medium" is either the medium defined ↓ ┆19┆┆89┆┄┄by the NVM parameter LD or the medium defined by the ↓ ┆19┆┆89┆┄┄RC855 operator.↲ ↲ ↲ ┆a1┆┆b0┆2.3.3.1 Medium Defined by NVM Parameter↲ ↲ ┆84┆The NVM parameter LD (load device) may assume a value in ↓ ┆19┆┆89┆┄┄the interval 0..15. This value defines the medium from ↓ ┆19┆┆89┆┄┄which the program is loaded when the terminal is reset. ↓ ┆19┆┆89┆┄┄If the terminal always runs the IBM 3270 BSC emulator, ↓ ┆19┆┆89┆┄┄LD must be assigned the value 0. Older versions of the ↓ ┆19┆┆89┆┄┄RC855 bootload program do not use the LD parameter. More ↓ ┆19┆┆89┆┄┄recent versions of the bootloader will interpret the ↓ ┆19┆┆89┆┄┄value of the parameter as follows:↲ ↲ LD = 0 : ┆84┆Standard mode, i.e. loading as in older ver┄↓ ┆19┆┆92┆┄┄sions.↲ LD = 1 : RcCircuit default mode (2.3.3).↲ ┆84┆LD = 2 : RcCircuit menu mode (2.3.3).↲ LD = 3 : PROM mode, i.e. loading from MIC PROMs.↲ LD = 4 : ┆84┆Hard disk mode, i.e. loading from a hard disk ↓ ┆19┆┆92┆┄┄drive.↲ LD = 5 : ┆84┆Standard mode, i.e. loading as in older ver┄↓ ┆19┆┆92┆┄┄sions.↲ LD = 6 : ┆84┆Diskette mode, i.e. loading from a diskette ↓ ┆19┆┆92┆┄┄drive.↲ LD = 7 : Image-load mode, i.e. loading from IML PROMs.↲ LD > 7 : Not defined.↲ ↲ ↲ ┆a1┆┆b0┆2.3.3.2 Medium Defined by Operator↲ ↲ ┆84┆The RC855 operator may redefine the program load medium, ↓ ┆19┆┆89┆┄┄i.e. override the LD parameter, by holding one of seve┄↓ ┆19┆┆89┆┄┄ral keys depressed while the terminal executes the ↓ ┆19┆┆89┆┄┄power-up selftest. This is referred to as ┆a1┆alternative ↓ ┆19┆┆89┆┄┆84┆program loading┆e1┆.↲ ↲ ┆84┆┆a1┆Key┆e1┆ ┆a1┆Loading Mode↲ ↲ "C" RcCircuit default mode↲ "M" RcCircuit menu mode↲ "P" PROM mode↲ "D" Hard disk mode ↲ "F" Diskette mode↲ "I" Image-load mode↲ ↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆a1┆┆b0┆2.3.3.3 Examples of Load Medium Specification↲ ↲ ┆84┆The program load medium for an RC855 ┆a1┆dedicated terminal┆e1┆ ↓ ┆19┆┆89┆┄┄(with RcCircuit and own host connections) might be ↓ ┆19┆┆89┆┄┄specified thus:↲ ↲ LD = 1 : ┆84┆RcCircuit default mode:↲ ┆84┆The RC855 is programmed from the RC890 control ↓ ┆19┆┆92┆┄┄unit as an IBM 3270 Display Station (RcCircuit ↓ ┆19┆┆92┆┄┄connection to the RC890).↲ ↲ LD = 3 : PROM mode:↲ ┆84┆The RC855 is programmed from an internal memory ↓ ┆19┆┆92┆┄┄board (MIC PROMs) as an IBM 3270 BSC Display ↓ ┆19┆┆92┆┄┄Station (RcCircuit connection to an RC855 ↓ ┆19┆┆92┆┄┄primary terminal).↲ ↲ "I" : Image-load mode:↲ ┆84┆The RC855 is programmed from an internal memory ↓ ┆19┆┆92┆┄┄board (IML PROMs) as a TTY terminal (own host ↓ ┆19┆┆92┆┄┄connection).↲ ↲ ┆84┆The program load medium for an RC855 ┆a1┆work station┆e1┆ (with ↓ ┆19┆┆89┆┄┄RcCircuit and own host connections) might be specified ↓ ┆19┆┆89┆┄┄thus:↲ ↲ "C" : ┆84┆RcCircuit default mode:↲ ┆84┆The RC855 is programmed from the RC890 control ↓ ┆19┆┆92┆┄┄unit as an IBM 3270 Display Station (RcCircuit ↓ ┆19┆┆92┆┄┄connection to the RC890).↲ ↲ LD = 6 : Diskette mode:↲ ┆84┆The RC855 is loaded from a connected diskette ↓ ┆19┆┆92┆┄┄drive with the CP/M operating system; the ↓ ┆19┆┆92┆┄┄operator then decides how he wants to program ↓ ┆19┆┆92┆┄┄the RC855 by selecting a CP/M program file, for ↓ ┆19┆┆92┆┄┄example: IBM 3270 BSC Display Station ↓ ┆19┆┆92┆┄┄(RcCircuit connection to an RC855 primary ↓ ┆19┆┆92┆┄┄terminal), TTY terminal (own host connection), ↓ ┆19┆┆92┆┄┄or word processor (local application).↲ ↲ ↲ ┆a1┆┆b0┆2.3.4 Status Messages↲ ↲ ┆84┆The RC855 display screen picture is composed of 25 ↓ ┆19┆┆89┆┄┄lines, each with 80 character positions. The first ↓ ┆19┆┆89┆┄┄twenty-four lines are used for various purposes, e.g. an ↓ ┆19┆┆89┆┄┄application program menu or interaction between the ↓ ┆19┆┆89┆┄┄RC855 operator and the application program. The twenty-↓ ┆19┆┆89┆┄┄fifth line, which is called the status line, is used for ↓ ┆19┆┆89┆┄┄messages from the terminal to the operator.↲ ↲ ┆84┆The status line is formatted in various ways, all ↓ ┆19┆┆89┆┄┄according to which program is running on the terminal at ↓ ┆19┆┆89┆┄┄the time. The position of a message on the status line ↓ ┆19┆┆89┆┄┄is an indication of what the message pertains to.↲ ↲ ┆84┆From terminal reset and up to the point where a loaded ↓ ┆19┆┆89┆┄┄RC855 application program is started and identifies ↓ ┆8c┆┆83┆┆d8┆↓ ┆19┆┆89┆┄┄itself, the status line is divided into two fields as ↓ ┆19┆┆89┆┄┄follows:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆┆a1┆xxx... xx↲ 1) 2)↲ ↲ 1) positions 1-78 : ┆84┆Messages displayed here pertain to ↓ ┆19┆┆9e┆┄┄system identification and system ↓ ┆19┆┆9e┆┄┄status.↲ ↲ ┆84┆Any error detected during the ↓ ┆19┆┆9e┆┄┄power-up selftest or program load┄↓ ┆19┆┆9e┆┄┄ing will be indicated in this ↓ ┆19┆┆9e┆┄┄field.↲ ↲ 2) positions 79-80 : ┆84┆Messages displayed here pertain to ↓ ┆19┆┆9e┆┄┄operational status during program ↓ ┆19┆┆9e┆┄┄loading.↲ ↲ ┆84┆The program load medium will be ↓ ┆19┆┆9e┆┄┄indicated in this field.↲ ↲ ┆84┆For an example of the status line as formatted by an┄↓ ┆19┆┆89┆┄┄other program, viz. the RC855 IBM 3270 BSC emulator, see ↓ ┆19┆┆89┆┄┄(8).↲ ↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆a1┆┆b0┆3. OPERATING AND ERROR-HANDLING PROCEDURES↲ ↲ ┆84┆This chapter explains the operation of the RC855 termi┄↓ ┆19┆┆89┆┄┄nal during its selftest and program load phases, i.e. up ↓ ┆19┆┆89┆┄┄to the point where the loaded RC855 application program ↓ ┆19┆┆89┆┄┄is started and identifies itself. Guidelines for error ↓ ┆19┆┆89┆┄┄handling are described where they are relevant. The ↓ ┆19┆┆89┆┄┄reader is advised to acquaint himself with the general ↓ ┆19┆┆89┆┄┄operating information contained in Chapter 2.↲ ↲ ↲ ┆a1┆┆b0┆3.1 Start-Up Procedure↲ ↲ ┆84┆The normal start-up procedure is outlined in this sec┄↓ ┆19┆┆89┆┄┄tion. A detailed explanation of the selftest and program ↓ ┆19┆┆89┆┄┄load phases is given in the sections that follow.↲ ↲ 1. ┆84┆Apply power to any connected device, e.g. a disk ↓ ┆19┆┆8c┆┄┄system, printer, or modem.↲ ↲ 2. ┆84┆If required, insert the CP/M system diskette in the ↓ ┆19┆┆8c┆┄┄diskette drive to permit program loading.↲ ↲ 3. ┆84┆If required, insert the key in the keyboard locking ↓ ┆19┆┆8c┆┄┄device and turn it to enable use of the keyboard.↲ ↲ 4. ┆84┆Apply power to the terminal itself.↲ ↲ 5. ┆84┆Observe the messages displayed on the status line.↲ ↲ ↲ ┆a1┆┆b0┆3.2 Selftest Phase↲ ↲ ┆84┆All RC855 terminals are operated in the same way in the ↓ ┆19┆┆89┆┄┄initial, selftest phase.↲ ↲ . ┆84┆To apply power to the display unit and connected ↓ ┆19┆┆8b┆┄┄keyboard: Press the power switch. This will also cause ↓ ┆19┆┆8b┆┄┄the terminal to be reset.↲ ↲ . ┆84┆To reset the terminal once it is powered on: Press the ↓ ┆19┆┆8b┆┄┄reset button.↲ ↲ ┆84┆After every reset the terminal executes the power-up ↓ ┆19┆┆89┆┄┄selftest. Toward the end of the power-up selftest (ap┄↓ ┆19┆┆89┆┄┄proximately 5 seconds after reset) the following message ↓ ┆19┆┆89┆┄┄is displayed:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 ↲ ↲ . ┆84┆To run the extended selftest: As soon as the terminal ↓ ┆19┆┆8b┆┄┄is reset, hold the key labeled "T" depressed while ↓ ┆19┆┆8b┆┄┄the terminal executes the power-up selftest.↲ ↲ . ┆84┆To perform alternative program loading: As soon as the ↓ ┆19┆┆8b┆┄┄terminal is reset, hold the appropriate key depressed ↓ ┆19┆┆8b┆┄┄while the terminal executes the power-up selftest.↲ ↲ ┆8c┆┆83┆┆d8┆↓ ┆a1┆┆e1┆┆b0┆Error Handling↲ ↲ ┆84┆Errors detected by the power-up selftest cannot be ↓ ┆19┆┆89┆┄┄directly bypassed.↲ ↲ ┆84┆If an error is detected during the PROM checksum test, ↓ ┆19┆┆89┆┄┄the following message is displayed:↲ ↲ ┆a1┆ ↲ ┆84┆┆a1┆RC855 checksum error ↲ ↲ ┆84┆If an error is detected during the RAM memory test, the ↓ ┆19┆┆89┆┄┄following message is displayed:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 memory error <addresses and values> ↲ ↲ ┆84┆On an error detected by the power-up selftest, the ↓ ┆19┆┆89┆┄┄operator should note down the message, including any ↓ ┆19┆┆89┆┄┄addresses and values, and report the error.↲ ↲ ↲ ┆a1┆┆b0┆3.3 Program Load Phase↲ ↲ ┆84┆As different media are used to load RC855 application ↓ ┆19┆┆89┆┄┄programs, RC855 terminals are operated in different ways ↓ ┆19┆┆89┆┄┄in the subsequent, program load phase.↲ ↲ ↲ ┆a1┆┆b0┆3.3.1 Internal Memory Boards↲ ↲ ┆84┆During program loading in PROM mode, i.e. from MIC ↓ ┆19┆┆89┆┄┄PROMs, the following message is displayed:↲ ↲ ┆a1┆ ╞ ↲ ┆84┆┆a1┆RC855 LP↲ ↲ ┆84┆During program loading in image-load mode, i.e. from IML ↓ ┆19┆┆89┆┄┄PROMs, the following message is displayed:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 LI↲ ↲ ┆84┆┆a2┆┆a2┆┆e2┆┆a1┆┆e1┆┆e1┆┆e1┆┆e1┆┆b0┆E┆a1┆┆e1┆rror Handling↲ ↲ ┆84┆If a checksum error is detected in a program image ↓ ┆19┆┆89┆┄┄loaded from MIC PROMs, the following message is dis┄↓ ┆19┆┆89┆┄┄played:↲ ↲ ┆a1┆ ↲ ┆84┆┆a1┆RC855 Checksum error LP↲ ↲ ┆84┆If a checksum error is detected in a program image ↓ ┆19┆┆89┆┄┄loaded from IML PROMs, the following message is dis┄↓ ┆19┆┆89┆┄┄played:↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆a1┆┆84┆ ↲ ┆84┆┆a1┆RC855 Checksum error LI↲ ↲ ┆84┆On a checksum error, the operator should reset the ↓ ┆19┆┆89┆┄┄terminal. If the error persists, he should report it.↲ ↲ ┆84┆If the operator presses "P" (or LD = 3) and no MIC PROM ↓ ┆19┆┆89┆┄┄is present, loading takes place from diskette (3.3.2); ↓ ┆19┆┆89┆┄┄if no diskette is present, the following message is ↓ ┆19┆┆89┆┄┄displayed:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 - Insert diskette ↲ ↲ ┆84┆If the operator presses "I" (or LD = 7) and no IML PROM ↓ ┆19┆┆89┆┄┄is present, the following message is displayed:↲ ↲ ┆84┆┆a1┆┆84┆ ↲ ┆84┆┆a1┆RC855 Load status: Hard error LI↲ ↲ ┆84┆On either of the errors above, the operator should reset ↓ ┆19┆┆89┆┄┄the terminal and investigate the available load media ↓ ┆19┆┆89┆┄┄before proceeding.↲ ↲ ↲ ┆a1┆┆b0┆3.3.2 Disk Systems↲ ↲ ┆84┆During program loading in hard disk mode, the following ↓ ┆19┆┆89┆┄┄message is displayed:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 ↲ ↲ ┆84┆As soon as the application program has been loaded and ↓ ┆19┆┆89┆┄┄started, the following appears on the first two lines of ↓ ┆19┆┆89┆┄┄the display screen (cf. Sect. 3.4):↲ ↲ ╞ ┆84┆RC855 56k CP/M 2.2 rel. 2.2↲ ╞ ╞ ┆84┆Hard disk online↲ ↲ ┆84┆During program loading in diskette mode, the following ↓ ┆19┆┆89┆┄┄message is displayed:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 LD↲ ↲ ┆a1┆┆84┆┆e1┆┆b0┆Error Handling↲ ↲ ┆84┆If an error is detected during program loading from hard ↓ ┆19┆┆89┆┄┄disk, one of the following messages is displayed:↲ ↲ ┆a1┆┆84┆ ↲ ┆a1┆┆84┆RC855 Hard disk: Bad sector ↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 Hard disk: Invalid id ↲ ↲ ┆8c┆┆83┆┆c8┆↓ ┆84┆On either of the errors above, the operator should reset ↓ ┆19┆┆89┆┄┄the terminal. If the error persists, he should report ↓ ┆19┆┆89┆┄┄it.↲ ↲ ┆84┆If an error is detected during program loading from ↓ ┆19┆┆89┆┄┄diskette, the following message is displayed:↲ ↲ ┆a1┆┆84┆ ↲ ┆84┆┆a1┆RC855 Load status: Diskette error LD↲ ↲ ┆84┆On the error above, the operator should reset the termi┄↓ ┆19┆┆89┆┄┄nal. If the error persists, he should attempt to load ↓ ┆19┆┆89┆┄┄from another CP/M system diskette, if one is available, ↓ ┆19┆┆89┆┄┄before reporting the error.↲ ↲ ┆84┆If the operator presses "D" (or LD = 4) and the hard ↓ ┆19┆┆89┆┄┄disk drive is not powered on or no hard disk drive is ↓ ┆19┆┆89┆┄┄connected to the display unit, the following message is ↓ ┆19┆┆89┆┄┄displayed:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 Load status: Hard error ↲ ↲ ┆84┆Note that the above message is also displayed, if the ↓ ┆19┆┆89┆┄┄operator presses "F" (or LD = 6) and the hard disk drive ↓ ┆19┆┆89┆┄┄through which the diskette drive is connected is not ↓ ┆19┆┆89┆┄┄powered on or no hard disk drive is connected to the ↓ ┆19┆┆89┆┄┄display unit.↲ ↲ ┆84┆If the operator presses "F" (or LD = 6) and the diskette ↓ ┆19┆┆89┆┄┄drive is not powered on or no diskette drive is ↓ ┆19┆┆89┆┄┄connected to the display unit, the following message is ↓ ┆19┆┆89┆┄┄displayed:↲ ↲ ┆84┆┆a1┆ ↲ ┆a1┆┆84┆RC855 - Insert diskette ↲ ↲ ┆84┆Note that the above message is also displayed, if the ↓ ┆19┆┆89┆┄┄operator presses "F" (or LD = 6) and the CP/M system ↓ ┆19┆┆89┆┄┄diskette is not properly inserted in the diskette drive.↲ ↲ ┆84┆On receiving either of the messages above, the operator ↓ ┆19┆┆8a┆┄┄should correct any obvious error and reset the ↓ ┆19┆┆8a┆┄┄terminal. If the error persists, he should report it.↲ ↲ ↲ ┆84┆┆b0┆┆a1┆3.3.3 RcCircuit (Local Terminal Network)↲ ↲ ┆84┆Program loading in RcCircuit default mode or RcCircuit ↓ ┆19┆┆89┆┄┄menu mode takes place in three stages: menu transmis┄↓ ┆19┆┆89┆┄┄sion, program selection, and program loading.↲ ↲ ↲ ┆84┆┆b0┆┆a1┆3.3.3.1 Menu Transmission↲ ↲ ┆84┆As soon as the terminal completes its power-up selftest ↓ ┆19┆┆89┆┄┄and until its menu is received from the RC890 control ↓ ┆19┆┆89┆┄┄unit (CU), the following message is displayed:↲ ↲ ┆8c┆┆83┆┆d8┆↓ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 LC↲ ↲ ┆84┆┆a1┆┆e1┆┆b0┆Error Handling↲ ↲ ┆84┆The menu transmission time is approximately 5 seconds. ↓ ┆19┆┆89┆┄┄If the above message continues to be displayed, the ↓ ┆19┆┆89┆┄┄RC855 operator should check his own RcCircuit cable ↓ ┆19┆┆89┆┄┄connection and the state of the RC890, correct any ↓ ┆19┆┆89┆┄┄obvious error, and reset the terminal (by means of the ↓ ┆19┆┆89┆┄┄key combination CTRL CLEAR). If the error persists, he ↓ ┆19┆┆89┆┄┄should report it.↲ ↲ ↲ ┆84┆┆a1┆┆b0┆3.3.3.2 Program Selection↲ ↲ ┆84┆When the terminal has received its menu from the RC890 ↓ ┆19┆┆89┆┄┄control unit (CU), the following message is displayed:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 ↲ ↲ ┆84┆The above message is displayed during automatic selec┄↓ ┆19┆┆89┆┄┄tion of the terminal's default application program, in ↓ ┆19┆┆89┆┄┄which case the menu is not displayed, or while the RC855 ↓ ┆19┆┆89┆┄┄operator is selecting an application program from the ↓ ┆19┆┆89┆┄┄displayed menu. The menu is displayed in RcCircuit menu ↓ ┆19┆┆89┆┄┄mode and when no default application program has been ↓ ┆19┆┆89┆┄┄specified for the terminal.↲ ↲ ┆84┆┆a1┆┆e1┆┆b0┆Error Handling↲ ↲ ┆84┆If the operator, in selecting an application program, ↓ ┆19┆┆89┆┄┄presses a key not associated with a program on the menu, ↓ ┆19┆┆89┆┄┄the keyboard emits an alarm beep. No message is dis┄↓ ┆19┆┆89┆┄┄played.↲ ↲ ┆84┆To correct such an error, the operator need only press ↓ ┆19┆┆89┆┄┄another key.↲ ↲ ┆84┆If the RcCircuit connection to the RC890 is lost, the ↓ ┆19┆┆89┆┄┄following message is displayed:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 CU disconnected ↲ ↲ ┆84┆On the error above, the RC855 operator should check his ↓ ┆19┆┆89┆┄┄own RcCircuit cable connection and the state of the ↓ ┆19┆┆89┆┄┄RC890, correct any obvious error, and reset the terminal ↓ ┆19┆┆89┆┄┄(CTRL CLEAR). If the error persists, he should report ↓ ┆19┆┆89┆┄┄it.↲ ↲ ↲ ┆a1┆┆a1┆┆b0┆3.3.3.3 Program Loading↲ ↲ ┆84┆If the selected application program is to be loaded ↓ ┆19┆┆89┆┄┄locally from a disk system, program loading takes place ↓ ┆19┆┆89┆┄┄as described in Section 3.3.2.↲ ↲ ┆8c┆┆83┆┆d8┆↓ ┆84┆If the selected application program is to be loaded ↓ ┆19┆┆89┆┄┄downline from the RC890 control unit (CU), the following ↓ ┆19┆┆89┆┄┄message is displayed:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 LA↲ ↲ ┆84┆┆84┆Note that the program load time is approximately 10 ↓ ┆19┆┆89┆┄┄seconds (from the moment of program selection) when a ↓ ┆19┆┆89┆┄┄single RC855 terminal is to be loaded. When several ↓ ┆19┆┆89┆┄┄terminals are to be loaded simultaneously, the program ↓ ┆19┆┆89┆┄┄load time may approach one minute.↲ ↲ ┆84┆┆a1┆┆e1┆┆b0┆Error Handling↲ ↲ ┆84┆If the RcCircuit connection to the RC890 is lost, the ↓ ┆19┆┆89┆┄┄following message is displayed:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 CU disconnected LA↲ ↲ ┆84┆On the error above, the RC855 operator should check his ↓ ┆19┆┆89┆┄┄own RcCircuit cable connection and the state of the ↓ ┆19┆┆89┆┄┄RC890, correct any obvious error, and reset the terminal ↓ ┆19┆┆89┆┄┄(CTRL CLEAR). If the error persists, he should report ↓ ┆19┆┆89┆┄┄it.↲ ↲ ┆84┆If the selected application program is not present on ↓ ┆19┆┆89┆┄┄the RC890 diskette, the following message is displayed:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 CU program not found LA↲ ↲ ┆84┆If an error involving the RC890 diskette occurs, the ↓ ┆19┆┆89┆┄┄following message is displayed:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 CU diskette error LA↲ ↲ ┆84┆┆84┆On either of the errors above, the RC855 operator should ↓ ┆19┆┆89┆┄┄check the state of the RC890, correct any obvious error, ↓ ┆19┆┆89┆┄┄and reset the terminal (CTRL CLEAR). If the error ↓ ┆19┆┆89┆┄┄persists, he should report it.↲ ↲ ┆84┆If a checksum error is detected in a program image ↓ ┆19┆┆89┆┄┄loaded from the RC890, the following message is dis┄↓ ┆19┆┆89┆┄┄played:↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 Checksum error LA↲ ↲ ┆84┆On a checksum error, the operator should reset the ↓ ┆19┆┆89┆┄┄terminal (CTRL CLEAR). If the error persists, he should ↓ ┆19┆┆89┆┄┄report it.↲ ↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆a1┆┆b0┆3.4 Application Program Identification↲ ↲ ┆84┆On the successful completion of program loading, the ↓ ┆19┆┆89┆┄┄RC855 application program is started and immediately ↓ ┆19┆┆89┆┄┄identifies itself. Here is one example (displayed on the ↓ ┆19┆┆89┆┄┄status line):↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 IBM 3270 BSC Display Station ↲ ↲ ┆84┆Here is another example (displayed on the first line):↲ ↲ ╞ ┆84┆RC855 56k CP/M 2.2 rel. 2.2↲ ↲ ┆84┆The further operation of the RC855 terminal is described ↓ ┆19┆┆89┆┄┄in the operating guide or user's guide for the relevant ↓ ┆19┆┆89┆┄┄RC855 application program ((3), (8), (9), and (10)).↲ ↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆a1┆┆b0┆4. MISCELLANY↲ ↲ ┆84┆Ordinary maintenance, the care of diskettes, and related ↓ ┆19┆┆89┆┄┄matters are the subject of this final chapter.↲ ↲ ↲ ┆a1┆┆b0┆4.1 Maintenance↲ ↲ ┆84┆The day-to-day maintenance of the RC855 terminal is ↓ ┆19┆┆89┆┄┄confined to cleaning. Occasionally the fuse in the power ↓ ┆19┆┆89┆┄┄cable connector may need to be replaced.↲ ↲ ↲ ┆a1┆┆b0┆4.1.1 Cleaning↲ ↲ ┆84┆┆a1┆Remove power┆e1┆ from the terminal, disk system, and printer ↓ ┆19┆┆89┆┄┄before proceeding.↲ ↲ ┆84┆Use plain, clean water, possibly containing a little ↓ ┆19┆┆89┆┄┄mild toilet soap, and a soft, firmly wrung cloth.↲ ↲ . ┆a1┆Display Screen↲ ↲ ┆84┆Wipe off the display screen with the cloth.↲ ↲ ┆84┆Avoid scratching the anti-reflection coating (e.g. ↓ ┆19┆┆8b┆┄┄with sharp objects).↲ ↲ . ┆a1┆Display Unit and Keyboard↲ ↲ ┆84┆Wipe off the display unit and keyboard with the cloth.↲ ↲ . ┆a1┆Disk System↲ ↲ ┆84┆Wipe off the drive(s) with the cloth.↲ ↲ ┆84┆Avoid putting foreign objects into the slot of a ↓ ┆19┆┆8b┆┄┄diskette drive.↲ ↲ . ┆a1┆Printer↲ ↲ ┆84┆Wipe off the printer with the cloth.↲ ↲ ┆84┆Occasionally remove the cover and vacuum-clean the ↓ ┆19┆┆8b┆┄┄inside.↲ ↲ ↲ ┆a1┆┆b0┆4.1.2 Replacing the Fuse↲ ↲ ┆84┆The fuse in the power cable connector (2.1.2.1) is ↓ ┆19┆┆89┆┄┄replaced as follows:↲ ↲ ┆84┆1. Remove power from the terminal.↲ ↲ ┆84┆2. Remove the power cable from the connector.↲ ↲ 3. Remove the fuse holder, directly above the connector.↲ ↲ ┆8c┆┆83┆┆d0┆↓ 4. ┆84┆Replace the fuse with the spare fuse in the fuse ↓ ┆19┆┆8c┆┄┄holder.↲ ↲ ↲ ┆a1┆┆b0┆4.2 Diskettes↲ ↲ ┆84┆Diskettes must be handled with care in order that they ↓ ┆19┆┆8a┆┄┄may serve their purpose. It may also be desirable to ↓ ┆19┆┆8a┆┄┄protect certain diskettes against writing.↲ ↲ ↲ ┆a1┆┆b0┆4.2.1 Care of Diskettes↲ ↲ ┆84┆Never touch the surface of a diskette (visible through ↓ ┆19┆┆89┆┄┄the round and oblong holes in the diskette cover).↲ ↲ ┆84┆Never write on the diskette label, once it has been ↓ ┆19┆┆89┆┄┄affixed to the diskette cover.↲ ↲ ┆84┆Always keep a diskette which is not in use in its pro┄↓ ┆19┆┆89┆┄┄tective envelope, secured against harmful environmental ↓ ┆19┆┆89┆┄┄influences, e.g. magnetic materials, dust, heat, or ↓ ┆19┆┆89┆┄┄sunlight.↲ ↲ ┆84┆Store diskettes in an upright position, preferably in a ↓ ┆19┆┆89┆┄┄closed diskette container.↲ ↲ ↲ ┆a1┆┆b0┆4.2.2 Write-Protection of Diskettes↲ ↲ ┆84┆Diskettes are protected against the writing of data as ↓ ┆19┆┆89┆┄┄follows:↲ ↲ . ┆a1┆┆e1┆┆b0┆5 1/4 Inch Diskettes↲ ↲ ┆84┆Cover the notch in the side of the diskette cover with ↓ ┆19┆┆8c┆┄┄a piece of opaque tape. To enable writing, remove the ↓ ┆19┆┆8c┆┄┄tape.↲ ↲ . ┆a1┆┆e1┆┆b0┆8 Inch Diskettes↲ ↲ ┆84┆Make a notch in the side of the diskette cover as ↓ ┆19┆┆8c┆┄┄shown below (measurements in millimeters). To enable ↓ ┆19┆┆8c┆┄┄writing, cover the notch with a piece of opaque tape.↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆a1┆┆b0┆┆a1┆┆b0┆┆b0┆┆a1┆A. REFERENCES↲ ↲ ┆84┆( 1) RCSL No. 42-i1984:↲ ┆84┆┆a1┆RC855 Configuration Guide↲ ┆84┆Torsten Schmidt and Henning Christensen, March ↓ ┆19┆┆8f┆┄┄1982↲ ↲ ( 2) RCSL No. 42-i2042:↲ ┆84┆┆a1┆RC855 Installation Guide↲ ┆84┆Henning Christensen, May 1982↲ ↲ ( 3) RCSL No. 42-i2347:↲ ┆84┆┆a1┆RC855 Work Station User's Guide↲ Jeffrey C. Snider and Leif Olsen, June 1983↲ ↲ ( 4) RCSL No. 42-i1826:↲ ┆a1┆RC855 IMB 3270 BSC Emulator Installation Guide↲ Finn Verner Nielsen, April 1982↲ ↲ ( 5) RCSL No. 42-i2372:↲ ┆a1┆┆84┆RC855 IMB 3270 BSC Emulator Installation Guide┆e1┆ ↓ ┆19┆┆8f┆┄┄┆e1┆(┆e1┆with DATEX)↲ Max Larsen, July 1983↲ ↲ ( 6) RCSL No. 42-i2140:↲ ┆84┆┆a1┆RC855 IBM 2780/3780 BSC Emulator Installation ↓ ┆19┆┆8f┆┄┆84┆Guide↲ ┆84┆Torben G. Rasmussen and Henning Christensen, ↓ ┆19┆┆8f┆┄┄October 1982↲ ↲ ( 7) RCSL No. 42-i2112:↲ ┆84┆┆a1┆┆84┆┆a1┆RC855 TTY Emulator Installation Guide↲ ┆84┆Claus Terp, August 1982↲ ↲ ( 8) RCSL No. 42-i2150:↲ ┆84┆┆a1┆RC855 IBM 3270 BSC Emulator Operating Guide↲ ┆84┆Claus Terp, November 1982↲ ↲ ( 9) RCSL No. 42-i2141:↲ ┆a1┆┆84┆RC855 IBM 2780/3780 BSC Emulator Operating Guide↲ ┆84┆Torben G. Rasmussen and Henning Christensen, ↓ ┆19┆┆8f┆┄┄October 1982↲ ↲ (10) RCSL No. 42-i2395:↲ ┆84┆┆a1┆RC855 TTY Emulator Operating Guide↲ ┆84┆Ole Thomassen, October 1983↲ ↲ (11) RCSL No. 42-i2156:↲ ┆84┆┆a1┆RC855 IMB 3270 BSC Emulator Reference Manual↲ ┆84┆Pierce C. Hazelton, November 1982↲ ↲ (12) RCSL No. 42-i2454:↲ ┆84┆┆a1┆RC890 Control Unit Operation and System ↓ ┆19┆┆8f┆┄┆84┆Customization Manual↲ ┆84┆Pierce C. Hazelton, January 1984↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ (13) RCSL No. 42-i2091:↲ ┆84┆┆a1┆RC850 Extended Selftest User's Guide↲ ┆84┆Jan Nielsen, August 1982↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆a1┆┆b0┆B. EXTENDED SELFTEST↲ ↲ ┆84┆The extended selftest is a set of diagnostic hardware ↓ ┆19┆┆89┆┄┄test programs, integrated in the RC855 bootloader. By ↓ ┆19┆┆89┆┄┄running the extended selftest as described below, the ↓ ┆19┆┆89┆┄┄RC855 operator can thoroughly check his terminal in ↓ ┆19┆┆89┆┄┄approximately two minutes.↲ ↲ ↲ ┆a1┆┆b0┆B.1 Test Procedure↲ ↲ ┆84┆To enter the extended selftest from the bootloader, the ↓ ┆19┆┆89┆┄┄operator must hold the key labeled "T" depressed while ↓ ┆19┆┆89┆┄┄the terminal executes the power-up selftest (3.2). In ↓ ┆19┆┆89┆┄┄approximately 7 seconds the following will appear on the ↓ ┆19┆┆89┆┄┄display screen:↲ ↲ ╞ ╞ RC855 Extended Selftest↲ ╞ ╞ <<< test no.: 00 >>>↲ ╞ ╞ <<< pass no.: 00000 >>>↲ ↲ ┆84┆The extended selftest runs automatically in a continuous ↓ ┆19┆┆89┆┄┄loop. Each pass comprises a sequence of seven different ↓ ┆19┆┆89┆┄┄tests, numbered from 0 to 6, followed by a momentarily ↓ ┆19┆┆89┆┄┄blank screen. The above message indicates that test ↓ ┆19┆┆89┆┄┄number 0 is active, but no passes have been completed. ↓ ┆19┆┆89┆┄┄For a thorough check of the terminal, the operator ↓ ┆19┆┆89┆┄┄should allow the extended selftest to loop through ten ↓ ┆19┆┆89┆┄┄complete passes, which it will do in approximately two ↓ ┆19┆┆89┆┄┄minutes.↲ ↲ ┆84┆If an error is detected by the extended selftest, the ↓ ┆19┆┆89┆┄┄terminal CPU (central processing unit) will stop, and ↓ ┆19┆┆89┆┄┄the message↲ ↲ ╞ ╞ **** ERROR no.: <error code> ****↲ ↲ ┆84┆where <error code> is a two-digit hexadecimal number, ↓ ┆19┆┆89┆┄┄will appear in the lower right-hand corner of the ↓ ┆19┆┆89┆┄┄display screen. The operator should note down the error ↓ ┆19┆┆89┆┄┄code and report the error.↲ ↲ ┆84┆To exit from the extended selftest and re-enter the ↓ ┆19┆┆89┆┄┄bootloader, the operator must press the key combination ↓ ┆19┆┆89┆┄┄CTRL CLEAR. The terminal will then execute a normal ↓ ┆19┆┆89┆┄┄power-up selftest.↲ ↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆a1┆┆b0┆B.2 Tests Performed↲ ↲ 0 : ┆84┆┆a1┆Power-Up Selftest↲ ↲ ┆84┆A power-up selftest is executed in every pass of the ↓ ┆19┆┆8d┆┄┄extended selftest. The power-up selftest comprises ↓ ┆19┆┆8d┆┄┄two tests:↲ ↲ ┆84┆┆a1┆PROM Checksum Test (error code: 01)↲ ↲ ┆84┆This test checks the PROMs (programmable read-only ↓ ┆19┆┆8d┆┄┄memories) of the terminal. Note that, if an error is ↓ ┆19┆┆8d┆┄┄detected by a normal power-up selftest, the message↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 checksum error ↲ ↲ ┆84┆is displayed on the status line (3.2).↲ ↲ ┆84┆┆a1┆RAM Memory Test (error code: 02)↲ ↲ ┆84┆This test checks the RAM (random-access memory) of ↓ ┆19┆┆8d┆┄┄the terminal. Note that, if an error is detected by ↓ ┆19┆┆8d┆┄┄a normal power-up selftest, the message↲ ↲ ┆84┆┆a1┆ ↲ ┆84┆┆a1┆RC855 memory error <addresses and values> ↲ ↲ ┆84┆is displayed on the status line (3.2).↲ ↲ 1 : ┆a1┆Memory Refresh Test (error code: 17)↲ ↲ ┆84┆This test checks the memory controller.↲ ↲ 2 : ┆a1┆DMA Test (error code: 03 or 04)↲ ↲ ┆84┆This test checks DMA (direct memory access) trans-↓ ┆19┆┆8d┆┄┄fers between channels 0 and 1.↲ ↲ 3 : ┆a1┆CTR Test↲ ↲ ┆84┆This test checks the character ROM (read-only ↓ ┆19┆┆8d┆┄┄memory) and shadow RAM (random-access memory) used ↓ ┆19┆┆8d┆┄┄in conjunction with the CRT (cathode ray tube).↲ ↲ ┆84┆No error codes are associated with this test. The ↓ ┆19┆┆8d┆┄┄operator must ┆a1┆observe the display┆e1┆┆a1┆ screen┆e1┆ during the ↓ ┆19┆┆8d┆┄┄test and, if need be, hold the CTRL key depressed to ↓ ┆19┆┆8d┆┄┄freeze the picture.↲ ↲ ┆84┆Twelve sets of the 128 graphic symbols in the dis- ↓ ┆19┆┆8d┆┄┄playable character repertoire are shown for 10 ↓ ┆19┆┆8d┆┄┄seconds. This picture should not change. A change ↓ ┆19┆┆8d┆┄┄indicates an error.↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆84┆Then a picture consisting of alternating light and ↓ ┆19┆┆8d┆┄┄dark vertical bars is shown. This light-and-dark ↓ ┆19┆┆8d┆┄┄pattern should reverse itself after approximately 5 ↓ ┆19┆┆8d┆┄┄seconds. Failure to do so indicates an error.↲ ↲ 4 : ┆a1┆CTC Test (error code: 09 or 0B)↲ ↲ ┆84┆This test checks the CTC (counter timer circuit) for ↓ ┆19┆┆8d┆┄┄interrupt generation and interrupt addressing.↲ ↲ 5 : ┆a1┆Printer Channel Test (error code: C0 or D0)↲ ↲ ┆84┆This test checks the SIO (serial input/output) ↓ ┆19┆┆8d┆┄┄channel used for the printer. If no printer is ↓ ┆19┆┆8d┆┄┄connected to the display unit, the test is skipped. ↓ ┆19┆┆8d┆┄┄This is also the case, if the OFFLINE bit is set (to ↓ ┆19┆┆8d┆┄┄"offline") when the printer channel test is entered.↲ ↲ ┆84┆The test causes the contents of a buffer of 4,096 ↓ ┆19┆┆8d┆┄┄printable characters to be transmitted to the ↓ ┆19┆┆8d┆┄┄printer. The transmission speed is determined by ↓ ┆19┆┆8d┆┄┄the value of the relevant NVM parameter.↲ ↲ ┆84┆The buffer contains characters with decimal values ↓ ┆19┆┆8d┆┄┄in the interval 32..127. Every buffer begins with ↓ ┆19┆┆8d┆┄┄the control characters CR (carriage return) and FF ↓ ┆19┆┆8d┆┄┄(form feed). For every 80 characters, the control ↓ ┆19┆┆8d┆┄┄characters CR (carriage return) and LF (line feed) ↓ ┆19┆┆8d┆┄┄are inserted.↲ ↲ 6 : ┆a1┆NVM Test↲ ↲ ┆84┆The NVM (nonvolatile memory) test is not run when ↓ ┆19┆┆8d┆┄┄the extended selftest is entered from the bootloader ↓ ┆19┆┆8d┆┄┄as described in Section B.1.↲ ↲ ↲ ┆a1┆┆b0┆B.3 Error Codes↲ ↲ ┆84┆┆a1┆Code┆e1┆ ┆a1┆Test and Error↲ ↲ 01 0 : power-up selftest: PROM checksum error↲ 02 0 : power-up selftest: RAM memory error↲ 03 2 : DMA test: data error↲ 04 2 : ┆84┆DMA test: terminal count bit not set by DMA ↓ ┆19┆┆94┆┄┄channel 1 within 200 milliseconds↲ 09 4 : CTC test: generation of an unwanted interrupt↲ 0B 4 : ┆84┆CTC test: timeout of a CTC channel with no ↓ ┆19┆┆94┆┄┄interrupt↲ 17 1 : memory refresh test: data error↲ C0 5 : ┆84┆printer channel test: change of BUSY bit from ↓ ┆19┆┆94┆┄┄"not busy" to "busy" during execution↲ D0 5 : ┆84┆printer channel test: change of OFFLINE bit ↓ ┆19┆┆94┆┄┄from "not offline" to "offline" during ↓ ┆19┆┆94┆┄┄execution↲ ↲ ┆84┆For a detailed description of the extended selftest, see ↓ ┆19┆┆89┆┄┄(13).↲ ↲ ════════════════════════════════════════════════════════════════════════ ↓ ┆a1┆┆b0┆C. SURVEY OF STATUS MESSAGES↲ ↲ ┆84┆┆a1┆Status Line Positions: 1-78┆e1┆┆e1┆ ┆a1┆79-80┆e1┆ ┆a1┆┆a1┆┆a1┆┆e1┆┆e1┆┆a1┆Wh┆a1┆┆e1┆┆a1┆ere D┆a1┆┆e1┆┆a1┆┆a1┆e┆a1┆┆e1┆┆a1┆scribed↲ ↲ RC855 ┆84┆3.2, 3.2.2, ↓ ┆19┆┆b0┆┄┄3.3.3.2↲ RC855 LP 3.3.1↲ RC855 LI 3.3.1↲ RC855 LD 3.3.2↲ RC855 LC 3.3.3.1↲ RC855 LA 3.3.3.3↲ RC855 checksum error 3.2↲ RC855 memory error ... 3.2↲ RC855 - Insert diskette 3.3.1, 3.3.2↲ RC855 Load status: Hard error 3.3.2↲ RC855 Load status: Hard error LI 3.3.1↲ RC855 Load status:↲ Diskette error LD 3.3.2↲ RC855 Hard disk: Bad sector 3.3.2↲ RC855 Hard disk: Invalid id 3.3.2↲ RC855 CU disconnected 3.3.3.2↲ RC855 CU disconnected LA 3.3.3.3↲ RC855 CU program not found LA 3.3.3.3↲ RC855 CU diskette error LA 3.3.3.3↲ RC855 Checksum error LP 3.3.1↲ RC855 Checksum error LI 3.3.1↲ RC855 Checksum error LA 3.3.3.3↲ ↲ ┆1a┆┆1a┆tion and System ↓ ┆19┆┆8f┆┄┆84┆Customization Manual↲ ng Guide↲
0x0000…0020 (0,) 00 00 00 00 00 00 00 00 42 03 06 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 4e 00 00 00 ┆ B N ┆ 0x0020…0040 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ┆ ┆ 0x0040…0047 00 00 00 00 00 00 00 ┆ ┆ 0x0047…0080 Params { 0x0047…0080 04 00 2d 4e 0a 00 06 00 00 00 00 02 01 41 31 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ┆ -N A1@ ┆ 0x0047…0080 00 00 00 00 00 00 00 00 05 0f 19 23 2d 37 41 4b 55 5f 69 73 7d 87 91 ff 04 ┆ #-7AKU_iså ┆ 0x0047…0080 } 0x0080…00a0 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a ┆ ┆ 0x00a0…00c0 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a b0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 52 43 ┆ RC┆ 0x00c0…00e0 38 35 35 20 4f 70 65 72 61 74 69 6e 67 20 47 75 69 64 65 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d ┆855 Operating Guide ┆ 0x00e0…0100 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d ┆ ┆ 0x0100…0120 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 41 2f 53 20 52 45 47 4e 45 43 45 4e 54 52 41 4c 45 4e 20 ┆ A/S REGNECENTRALEN ┆ 0x0120…0140 61 66 20 31 39 37 39 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆af 1979 ┆ 0x0140…0160 46 65 62 72 75 61 72 79 20 31 39 38 34 0d 0a 49 6e 66 6f 72 6d 61 74 69 6f 6e 20 44 65 70 61 72 ┆February 1984 Information Depar┆ 0x0160…0180 74 6d 65 6e 74 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 52 43 ┆tment RC┆ 0x0180…0191 53 4c 20 4e 6f 2e 20 34 32 2d 69 32 34 35 39 0d 0a ┆SL No. 42-i2459 ┆ 0x0191…0194 FormFeed { 0x0191…0194 0c 83 a0 ┆ ┆ 0x0191…0194 } 0x0194…01a0 0a 0d 0a 0d 0a 41 75 74 68 6f 72 3a ┆ Author:┆ 0x01a0…01c0 20 20 20 20 50 69 65 72 63 65 20 43 2e 20 48 61 7a 65 6c 74 6f 6e 0d 0a 0d 0a 4b 65 79 77 6f 72 ┆ Pierce C. Hazelton Keywor┆ 0x01c0…01e0 64 73 3a 20 20 52 43 38 35 35 2c 20 4f 70 65 72 61 74 69 6f 6e 0d 0a 0d 0a 41 62 73 74 72 61 63 ┆ds: RC855, Operation Abstrac┆ 0x01e0…0200 74 3a 20 20 84 44 65 73 63 72 69 62 65 73 20 74 68 65 20 67 65 6e 65 72 61 6c 20 6f 70 65 72 61 ┆t: Describes the general opera┆ 0x0200…0220 (1,) 74 69 6f 6e 20 6f 66 20 74 68 65 20 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 2e 20 0a 19 8b 80 ┆tion of the RC855 terminal. ┆ 0x0220…0240 80 43 6f 76 65 72 73 3a 20 65 72 67 6f 6e 6f 6d 69 63 20 66 65 61 74 75 72 65 73 3b 20 6f 70 65 ┆ Covers: ergonomic features; ope┆ 0x0240…0260 72 61 74 69 6e 67 20 63 6f 6e 74 72 6f 6c 73 3b 20 63 61 62 6c 65 20 0a 19 8b 80 80 63 6f 6e 6e ┆rating controls; cable conn┆ 0x0260…0280 65 63 74 69 6f 6e 73 3b 20 74 68 65 20 6b 65 79 62 6f 61 72 64 3b 20 73 65 6c 66 74 65 73 74 69 ┆ections; the keyboard; selftesti┆ 0x0280…02a0 6e 67 3b 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 0a 19 8b 80 80 70 72 6f 67 72 61 6d 20 6c 6f 61 ┆ng; application program loa┆ 0x02a0…02c0 64 69 6e 67 3b 20 73 74 61 74 75 73 20 6d 65 73 73 61 67 65 73 3b 20 74 68 65 20 73 74 61 72 74 ┆ding; status messages; the start┆ 0x02c0…02e0 2d 75 70 20 70 72 6f 2d 0a 19 8b 80 80 63 65 64 75 72 65 3b 20 65 72 72 6f 72 20 68 61 6e 64 6c ┆-up pro- cedure; error handl┆ 0x02e0…0300 69 6e 67 3b 20 6f 72 64 69 6e 61 72 79 20 6d 61 69 6e 74 65 6e 61 6e 63 65 3b 20 64 69 73 6b 20 ┆ing; ordinary maintenance; disk ┆ 0x0300…0320 0a 19 8b 80 80 73 79 73 74 65 6d 73 20 61 6e 64 20 64 69 73 6b 65 74 74 65 73 2e 20 4d 65 61 6e ┆ systems and diskettes. Mean┆ 0x0320…0340 74 20 74 6f 20 62 65 20 73 75 70 70 6c 65 6d 65 6e 74 65 64 20 62 79 20 0a 19 8b 80 80 6f 70 65 ┆t to be supplemented by ope┆ 0x0340…0360 72 61 74 69 6e 67 20 67 75 69 64 65 73 20 66 6f 72 20 73 70 65 63 69 66 69 63 20 52 43 38 35 35 ┆rating guides for specific RC855┆ 0x0360…0380 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 2d 0a 19 8b 80 80 67 72 61 6d 73 2e 0d 0a 0d 0a ┆ application pro- grams. ┆ 0x0380…03a0 20 20 20 20 20 20 20 20 20 20 20 28 33 38 20 70 72 69 6e 74 65 64 20 70 61 67 65 73 29 0d 0a 0d ┆ (38 printed pages) ┆ 0x03a0…03c0 0a 0d 0a 0d 0a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 a1 4e 6f 74 69 63 65 0d 0a 20 20 20 ┆ Notice ┆ 0x03c0…03e0 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 43 50 2f 4d 20 69 73 20 61 20 ┆ CP/M is a ┆ 0x03e0…0400 72 65 67 69 73 74 65 72 65 64 20 74 72 61 64 65 6d 61 72 6b 20 6f 66 20 44 69 67 69 74 61 6c 20 ┆registered trademark of Digital ┆ 0x0400…040d (2,) 52 65 73 65 61 72 63 68 2e 0d 0a 0d 0a ┆Research. ┆ 0x040d…0410 FormFeed { 0x040d…0410 0c 81 c8 ┆ ┆ 0x040d…0410 } 0x0410…0420 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0x0420…0440 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 69 0d 0a 0d 0a b0 a1 e1 20 20 20 20 20 20 20 ┆ i ┆ 0x0440…0460 20 20 e1 a1 46 4f 52 45 57 4f 52 44 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 46 69 72 73 74 20 ┆ FOREWORD First ┆ 0x0460…0480 65 64 69 74 69 6f 6e 3a 20 52 43 53 4c 20 4e 6f 2e 20 34 32 2d 69 31 36 38 36 2e 0d 0a 0d 0a 20 ┆edition: RCSL No. 42-i1686. ┆ 0x0480…04a0 20 20 20 20 20 20 20 20 84 53 65 63 6f 6e 64 20 65 64 69 74 69 6f 6e 3a 20 52 43 53 4c 20 4e 6f ┆ Second edition: RCSL No┆ 0x04a0…04c0 2e 20 34 32 2d 69 32 34 35 39 2e 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 69 73 20 65 64 69 74 ┆. 42-i2459. This edit┆ 0x04c0…04e0 69 6f 6e 20 73 75 70 65 72 73 65 64 65 73 20 74 68 65 20 66 69 72 73 74 20 65 64 69 74 69 6f 6e ┆ion supersedes the first edition┆ 0x04e0…0500 2e 20 54 68 65 20 74 65 78 74 20 68 61 73 20 0a 19 89 80 80 62 65 65 6e 20 62 72 6f 75 67 68 74 ┆. The text has been brought┆ 0x0500…0520 20 75 70 20 74 6f 20 64 61 74 65 20 61 6e 64 20 63 6f 6d 70 6c 65 74 65 6c 79 20 72 65 77 72 69 ┆ up to date and completely rewri┆ 0x0520…0540 74 74 65 6e 2e 20 49 6d 70 6f 72 2d 20 0a 19 89 80 80 74 61 6e 74 20 61 64 64 69 74 69 6f 6e 73 ┆tten. Impor- tant additions┆ 0x0540…0560 20 69 6e 63 6c 75 64 65 20 64 65 73 63 72 69 70 74 69 6f 6e 73 20 6f 66 20 52 43 38 39 30 20 62 ┆ include descriptions of RC890 b┆ 0x0560…0580 61 73 65 64 20 74 65 72 2d 20 0a 19 89 80 80 6d 69 6e 61 6c 20 63 6c 75 73 74 65 72 73 2c 20 74 ┆ased ter- minal clusters, t┆ 0x0580…05a0 68 65 20 65 78 74 65 6e 64 65 64 20 73 65 6c 66 74 65 73 74 2c 20 61 6e 64 20 6e 65 77 20 70 72 ┆he extended selftest, and new pr┆ 0x05a0…05c0 6f 67 72 61 6d 20 0a 19 89 80 80 6c 6f 61 64 20 6d 65 64 69 61 2e 0d 0a 0d 0a 0d 0a 20 20 20 20 ┆ogram load media. ┆ 0x05c0…05e0 20 20 20 20 20 50 69 65 72 63 65 20 43 2e 20 48 61 7a 65 6c 74 6f 6e 0d 0a 20 20 20 20 20 20 20 ┆ Pierce C. Hazelton ┆ 0x05e0…0600 20 20 41 2f 53 20 52 45 47 4e 45 43 45 4e 54 52 41 4c 45 4e 20 61 66 20 31 39 37 39 2c 20 46 65 ┆ A/S REGNECENTRALEN af 1979, Fe┆ 0x0600…060f (3,) 62 72 75 61 72 79 20 31 39 38 34 0d 0a 0d 0a ┆bruary 1984 ┆ 0x060f…0612 FormFeed { 0x060f…0612 0c 81 88 ┆ ┆ 0x060f…0612 } 0x0612…0620 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0x0620…0639 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 69 69 0d 0a 0d 0a ┆ ii ┆ 0x0639…063c FormFeed { 0x0639…063c 0c 80 90 ┆ ┆ 0x0639…063c } 0x063c…0640 0a 20 20 20 ┆ ┆ 0x0640…0660 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 69 69 69 ┆ iii┆ 0x0660…0680 0d 0a 0d 0a a1 b0 54 41 42 4c 45 20 4f 46 20 43 4f 4e 54 45 4e 54 53 20 20 20 20 20 20 20 20 20 ┆ TABLE OF CONTENTS ┆ 0x0680…06a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0x06a0…06c0 20 20 20 50 41 47 45 0d 0a 0d 0a b0 31 2e 20 20 49 4e 54 52 4f 44 55 43 54 49 4f 4e f0 20 2e 2e ┆ PAGE 1. INTRODUCTION ..┆ 0x06c0…06e0 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆................................┆ 0x06e0…0700 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 20 31 0d 0a 20 20 20 20 31 2e 31 20 20 54 68 65 20 52 43 38 ┆.......... 1 1.1 The RC8┆ 0x0700…0720 35 35 20 54 65 72 6d 69 6e 61 6c 20 69 6e 20 42 72 69 65 66 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆55 Terminal in Brief ...........┆ 0x0720…0740 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 20 31 0d 0a 20 20 20 20 31 2e 32 20 20 53 74 61 6e ┆............. 1 1.2 Stan┆ 0x0740…0760 64 2d 41 6c 6f 6e 65 20 54 65 72 6d 69 6e 61 6c 73 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆d-Alone Terminals ..............┆ 0x0760…0780 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 20 32 0d 0a 20 20 20 20 31 2e 33 20 20 52 ┆................ 2 1.3 R┆ 0x0780…07a0 43 38 35 35 20 42 61 73 65 64 20 54 65 72 6d 69 6e 61 6c 20 43 6c 75 73 74 65 72 73 20 2e 2e 2e ┆C855 Based Terminal Clusters ...┆ 0x07a0…07c0 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 20 32 0d 0a 20 20 20 20 31 2e 34 ┆................... 2 1.4┆ 0x07c0…07e0 20 20 52 43 38 39 30 20 42 61 73 65 64 20 54 65 72 6d 69 6e 61 6c 20 43 6c 75 73 74 65 72 73 20 ┆ RC890 Based Terminal Clusters ┆ 0x07e0…0800 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 20 33 0d 0a 0d 0a b0 32 ┆...................... 3 2┆ 0x0800…0820 (4,) 2e 20 20 54 48 45 20 52 43 38 35 35 20 54 45 52 4d 49 4e 41 4c f0 20 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆. THE RC855 TERMINAL .........┆ 0x0820…0840 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 20 ┆............................. ┆ 0x0840…0860 35 0d 0a 20 20 20 20 32 2e 31 20 20 44 69 73 70 6c 61 79 20 55 6e 69 74 20 2e 2e 2e 2e 2e 2e 2e ┆5 2.1 Display Unit .......┆ 0x0860…0880 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆................................┆ 0x0880…08a0 20 20 20 35 0d 0a 20 20 20 20 20 20 20 20 20 32 2e 31 2e 31 20 20 45 72 67 6f 6e 6f 6d 69 63 20 ┆ 5 2.1.1 Ergonomic ┆ 0x08a0…08c0 46 65 61 74 75 72 65 73 20 61 6e 64 20 43 6f 6e 74 72 6f 6c 73 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆Features and Controls ..........┆ 0x08c0…08e0 2e 2e 2e 20 20 20 35 0d 0a 20 20 20 20 20 20 20 20 20 32 2e 31 2e 32 20 20 42 61 63 6b 20 50 61 ┆... 5 2.1.2 Back Pa┆ 0x08e0…0900 6e 65 6c 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆nel ............................┆ 0x0900…0920 2e 2e 2e 2e 2e 2e 20 20 20 36 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 32 2e 31 2e ┆...... 6 2.1.┆ 0x0920…0940 32 2e 31 20 20 43 61 62 6c 65 20 43 6f 6e 6e 65 63 74 6f 72 73 20 61 6e 64 20 4f 70 65 72 61 74 ┆2.1 Cable Connectors and Operat┆ 0x0940…0960 69 6e 67 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 43 6f ┆ing Co┆ 0x0960…0980 6e 74 72 6f 6c 73 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆ntrols .........................┆ 0x0980…09a0 2e 2e 20 20 20 37 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 32 2e 31 2e 32 2e 32 20 ┆.. 7 2.1.2.2 ┆ 0x09a0…09c0 20 44 69 73 6b 20 53 79 73 74 65 6d 20 4f 70 74 69 6f 6e 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆ Disk System Option ............┆ 0x09c0…09e0 2e 2e 2e 2e 2e 20 20 20 37 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 32 2e 31 2e 32 ┆..... 7 2.1.2┆ 0x09e0…0a00 2e 33 20 20 50 72 69 6e 74 65 72 20 4f 70 74 69 6f 6e 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆.3 Printer Option .............┆ 0x0a00…0a20 (5,) 2e 2e 2e 2e 2e 2e 2e 2e 20 20 20 38 0d 0a 20 20 20 20 32 2e 32 20 20 4b 65 79 62 6f 61 72 64 20 ┆........ 8 2.2 Keyboard ┆ 0x0a20…0a40 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆................................┆ 0x0a40…0a60 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 20 38 0d 0a 20 20 20 20 20 20 20 20 20 32 2e 32 2e 31 20 ┆........... 8 2.2.1 ┆ 0x0a60…0a80 20 4f 70 65 72 61 74 69 6e 67 20 46 65 61 74 75 72 65 73 20 61 6e 64 20 43 6f 6e 74 72 6f 6c 73 ┆ Operating Features and Controls┆ 0x0a80…0aa0 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 20 38 0d 0a 20 20 20 20 20 20 20 20 20 32 2e 32 ┆ ............. 8 2.2┆ 0x0aa0…0ac0 2e 32 20 20 4c 6f 63 6b 69 6e 67 20 44 65 76 69 63 65 20 4f 70 74 69 6f 6e 20 2e 2e 2e 2e 2e 2e ┆.2 Locking Device Option ......┆ 0x0ac0…0ae0 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 20 39 0d 0a 20 20 20 20 20 20 20 20 20 ┆................. 9 ┆ 0x0ae0…0b00 32 2e 32 2e 33 20 20 42 61 64 67 65 20 52 65 61 64 65 72 20 4f 70 74 69 6f 6e 20 2e 2e 2e 2e 2e ┆2.2.3 Badge Reader Option .....┆ 0x0b00…0b20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 20 39 0d 0a 20 20 20 20 20 20 ┆.................... 9 ┆ 0x0b20…0b40 20 20 20 32 2e 32 2e 34 20 20 54 68 65 20 4b 65 79 62 6f 61 72 64 20 50 72 6f 70 65 72 20 2e 2e ┆ 2.2.4 The Keyboard Proper ..┆ 0x0b40…0b60 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 20 39 0d 0a 20 20 20 ┆....................... 9 ┆ 0x0b60…0b80 20 20 20 20 20 20 20 20 20 20 20 20 20 32 2e 32 2e 34 2e 31 20 20 47 65 6e 65 72 61 6c 20 46 75 ┆ 2.2.4.1 General Fu┆ 0x0b80…0ba0 6e 63 74 69 6f 6e 73 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 31 30 0d 0a ┆nctions .................. 10 ┆ 0x0ba0…0bc0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 32 2e 32 2e 34 2e 32 20 20 41 6c 70 68 61 6d 65 ┆ 2.2.4.2 Alphame┆ 0x0bc0…0be0 72 69 63 20 4b 65 79 73 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 31 ┆ric Keys .................... 1┆ 0x0be0…0c00 31 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 32 2e 32 2e 34 2e 33 20 20 4e 75 6d 65 ┆1 2.2.4.3 Nume┆ 0x0c00…0c20 (6,) 72 69 63 20 50 61 64 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆ric Pad ........................┆ 0x0c20…0c40 20 20 31 31 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 32 2e 32 2e 34 2e 34 20 20 41 ┆ 11 2.2.4.4 A┆ 0x0c40…0c60 74 74 65 6e 74 69 6f 6e 20 4b 65 79 73 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆ttention Keys ..................┆ 0x0c60…0c80 2e 2e 2e 20 20 31 31 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 32 2e 32 2e 34 2e 35 ┆... 11 2.2.4.5┆ 0x0c80…0ca0 20 20 45 64 69 74 69 6e 67 20 4b 65 79 73 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆ Editing Keys .................┆ 0x0ca0…0cc0 2e 2e 2e 2e 2e 2e 20 20 31 32 0d 0a 20 20 20 20 32 2e 33 20 20 47 65 6e 65 72 61 6c 20 4f 70 65 ┆...... 12 2.3 General Ope┆ 0x0cc0…0ce0 72 61 74 69 6e 67 20 49 6e 66 6f 72 6d 61 74 69 6f 6e 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆rating Information .............┆ 0x0ce0…0d00 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 31 33 0d 0a 20 20 20 20 20 20 20 20 20 32 2e 33 2e 31 20 20 50 ┆......... 13 2.3.1 P┆ 0x0d00…0d20 6f 77 65 72 20 4f 6e 2f 4f 66 66 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆ower On/Off ....................┆ 0x0d20…0d40 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 31 33 0d 0a 20 20 20 20 20 20 20 20 20 32 2e 33 2e 32 ┆............ 13 2.3.2┆ 0x0d40…0d60 20 20 52 65 73 65 74 20 61 6e 64 20 53 65 6c 66 74 65 73 74 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆ Reset and Selftest ...........┆ 0x0d60…0d80 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 31 33 0d 0a 20 20 20 20 20 20 20 20 20 32 2e ┆............... 13 2.┆ 0x0d80…0da0 33 2e 33 20 20 50 72 6f 67 72 61 6d 20 4c 6f 61 64 69 6e 67 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆3.3 Program Loading ...........┆ 0x0da0…0dc0 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 31 34 0d 0a 20 20 20 20 20 20 20 20 ┆.................. 14 ┆ 0x0dc0…0de0 20 20 20 20 20 20 20 20 32 2e 33 2e 33 2e 31 20 20 4d 65 64 69 75 6d 20 44 65 66 69 6e 65 64 20 ┆ 2.3.3.1 Medium Defined ┆ 0x0de0…0e00 62 79 20 4e 56 4d 20 50 61 72 61 6d 65 74 65 72 20 2e 2e 2e 2e 20 20 31 35 0d 0a 20 20 20 20 20 ┆by NVM Parameter .... 15 ┆ 0x0e00…0e20 (7,) 20 20 20 20 20 20 20 20 20 20 20 32 2e 33 2e 33 2e 32 20 20 4d 65 64 69 75 6d 20 44 65 66 69 6e ┆ 2.3.3.2 Medium Defin┆ 0x0e20…0e40 65 64 20 62 79 20 4f 70 65 72 61 74 6f 72 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 31 35 0d 0a 20 20 ┆ed by Operator ......... 15 ┆ 0x0e40…0e60 20 20 20 20 20 20 20 20 20 20 20 20 20 20 32 2e 33 2e 33 2e 33 20 20 45 78 61 6d 70 6c 65 73 20 ┆ 2.3.3.3 Examples ┆ 0x0e60…0e80 6f 66 20 4c 6f 61 64 20 4d 65 64 69 75 6d 20 53 70 65 2d 0d 0a 20 20 20 20 20 20 20 20 20 20 20 ┆of Load Medium Spe- ┆ 0x0e80…0ea0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 63 69 66 69 63 61 74 69 6f 6e 20 2e 2e 2e 2e 2e 2e 2e ┆ cification .......┆ 0x0ea0…0ec0 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 31 35 0d 0a 20 20 20 20 20 20 20 20 ┆.................. 15 ┆ 0x0ec0…0ee0 20 32 2e 33 2e 34 20 20 53 74 61 74 75 73 20 4d 65 73 73 61 67 65 73 20 2e 2e 2e 2e 2e 2e 2e 2e ┆ 2.3.4 Status Messages ........┆ 0x0ee0…0f00 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 31 36 0d 0a 0d 0a b0 33 2e ┆..................... 16 3.┆ 0x0f00…0f20 20 20 4f 50 45 52 41 54 49 4e 47 20 41 4e 44 20 45 52 52 4f 52 2d 48 41 4e 44 4c 49 4e 47 20 50 ┆ OPERATING AND ERROR-HANDLING P┆ 0x0f20…0f40 52 4f 43 45 44 55 52 45 53 f0 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 31 38 ┆ROCEDURES ................. 18┆ 0x0f40…0f60 0d 0a 20 20 20 20 33 2e 31 20 20 53 74 61 72 74 2d 55 70 20 50 72 6f 63 65 64 75 72 65 20 2e 2e ┆ 3.1 Start-Up Procedure ..┆ 0x0f60…0f80 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 ┆............................... ┆ 0x0f80…0fa0 20 31 38 0d 0a 20 20 20 20 33 2e 32 20 20 53 65 6c 66 74 65 73 74 20 50 68 61 73 65 20 2e 2e 2e ┆ 18 3.2 Selftest Phase ...┆ 0x0fa0…0fc0 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆................................┆ 0x0fc0…0fe0 2e 2e 20 20 31 38 0d 0a 20 20 20 20 33 2e 33 20 20 50 72 6f 67 72 61 6d 20 4c 6f 61 64 20 50 68 ┆.. 18 3.3 Program Load Ph┆ 0x0fe0…1000 61 73 65 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆ase ............................┆ 0x1000…1020 (8,) 2e 2e 2e 2e 2e 20 20 31 39 0d 0a 20 20 20 20 20 20 20 20 20 33 2e 33 2e 31 20 20 49 6e 74 65 72 ┆..... 19 3.3.1 Inter┆ 0x1020…1040 6e 61 6c 20 4d 65 6d 6f 72 79 20 42 6f 61 72 64 73 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆nal Memory Boards ..............┆ 0x1040…1060 2e 2e 2e 2e 2e 2e 2e 2e 20 20 31 39 0d 0a 20 20 20 20 20 20 20 20 20 33 2e 33 2e 32 20 20 44 69 ┆........ 19 3.3.2 Di┆ 0x1060…1080 73 6b 20 53 79 73 74 65 6d 73 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆sk Systems .....................┆ 0x1080…10a0 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 32 30 0d 0a 20 20 20 20 20 20 20 20 20 33 2e 33 2e 33 20 ┆........... 20 3.3.3 ┆ 0x10a0…10c0 20 52 63 43 69 72 63 75 69 74 20 28 4c 6f 63 61 6c 20 54 65 72 6d 69 6e 61 6c 20 4e 65 74 77 6f ┆ RcCircuit (Local Terminal Netwo┆ 0x10c0…10e0 72 6b 29 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 32 31 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 ┆rk) .......... 21 ┆ 0x10e0…1100 20 20 20 20 33 2e 33 2e 33 2e 31 20 20 4d 65 6e 75 20 54 72 61 6e 73 6d 69 73 73 69 6f 6e 20 2e ┆ 3.3.3.1 Menu Transmission .┆ 0x1100…1120 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 32 31 0d 0a 20 20 20 20 20 20 20 20 20 ┆................. 21 ┆ 0x1120…1140 20 20 20 20 20 20 20 33 2e 33 2e 33 2e 32 20 20 50 72 6f 67 72 61 6d 20 53 65 6c 65 63 74 69 6f ┆ 3.3.3.2 Program Selectio┆ 0x1140…1160 6e 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 32 32 0d 0a 20 20 20 20 20 20 ┆n .................. 22 ┆ 0x1160…1180 20 20 20 20 20 20 20 20 20 20 33 2e 33 2e 33 2e 33 20 20 50 72 6f 67 72 61 6d 20 4c 6f 61 64 69 ┆ 3.3.3.3 Program Loadi┆ 0x1180…11a0 6e 67 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 32 32 0d 0a 20 20 20 ┆ng .................... 22 ┆ 0x11a0…11c0 20 33 2e 34 20 20 41 70 70 6c 69 63 61 74 69 6f 6e 20 50 72 6f 67 72 61 6d 20 49 64 65 6e 74 69 ┆ 3.4 Application Program Identi┆ 0x11c0…11e0 66 69 63 61 74 69 6f 6e 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 32 33 0d 0a ┆fication ................. 23 ┆ 0x11e0…11e2 0d 0a ┆ ┆ 0x11e2…11e5 FormFeed { 0x11e2…11e5 0c 83 90 ┆ ┆ 0x11e2…11e5 } 0x11e5…1200 0a b0 b0 f0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0x1200…1220 (9,) 20 20 20 20 20 20 20 20 20 69 76 0d 0a b0 b0 a1 54 41 42 4c 45 20 4f 46 20 43 4f 4e 54 45 4e 54 ┆ iv TABLE OF CONTENT┆ 0x1220…1240 53 20 28 63 6f 6e 74 69 6e 75 65 64 29 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆S (continued) ┆ 0x1240…1260 20 20 20 20 20 20 20 20 20 20 20 20 20 50 41 47 45 0d 0a 0d 0a b0 34 2e 20 20 4d 49 53 43 45 4c ┆ PAGE 4. MISCEL┆ 0x1260…1280 4c 41 4e 59 f0 f0 f0 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆LANY ........................┆ 0x1280…12a0 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 32 35 0d 0a 20 20 20 20 ┆...................... 25 ┆ 0x12a0…12c0 34 2e 31 20 20 4d 61 69 6e 74 65 6e 61 6e 63 65 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆4.1 Maintenance ...............┆ 0x12c0…12e0 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 32 35 0d 0a 20 ┆......................... 25 ┆ 0x12e0…1300 20 20 20 20 20 20 20 20 34 2e 31 2e 31 20 20 43 6c 65 61 6e 69 6e 67 20 2e 2e 2e 2e 2e 2e 2e 2e ┆ 4.1.1 Cleaning ........┆ 0x1300…1320 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 32 35 ┆............................ 25┆ 0x1320…1340 0d 0a 20 20 20 20 20 20 20 20 20 34 2e 31 2e 32 20 20 52 65 70 6c 61 63 69 6e 67 20 74 68 65 20 ┆ 4.1.2 Replacing the ┆ 0x1340…1360 46 75 73 65 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 ┆Fuse .......................... ┆ 0x1360…1380 20 32 35 0d 0a 20 20 20 20 34 2e 32 20 20 44 69 73 6b 65 74 74 65 73 20 2e 2e 2e 2e 2e 2e 2e 2e ┆ 25 4.2 Diskettes ........┆ 0x1380…13a0 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆................................┆ 0x13a0…13c0 2e 2e 20 20 32 36 0d 0a 20 20 20 20 20 20 20 20 20 34 2e 32 2e 31 20 20 43 61 72 65 20 6f 66 20 ┆.. 26 4.2.1 Care of ┆ 0x13c0…13e0 44 69 73 6b 65 74 74 65 73 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆Diskettes ......................┆ 0x13e0…1400 2e 2e 2e 2e 2e 20 20 32 36 0d 0a 20 20 20 20 20 20 20 20 20 34 2e 32 2e 32 20 20 57 72 69 74 65 ┆..... 26 4.2.2 Write┆ 0x1400…1420 (10,) 2d 50 72 6f 74 65 63 74 69 6f 6e 20 6f 66 20 44 69 73 6b 65 74 74 65 73 20 2e 2e 2e 2e 2e 2e 2e ┆-Protection of Diskettes .......┆ 0x1420…1440 2e 2e 2e 2e 2e 2e 2e 2e 20 20 32 36 0d 0a 0d 0a 0d 0a a1 b0 b0 a1 41 b0 50 50 45 4e 44 49 43 45 ┆........ 26 A PPENDICE┆ 0x1440…1460 53 e1 3a 0d 0a 0d 0a a1 b0 e1 41 2e 20 20 52 45 46 45 52 45 4e 43 45 53 f0 20 2e 2e 2e 2e 2e 2e ┆S : A. REFERENCES ......┆ 0x1460…1480 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆................................┆ 0x1480…14a0 2e 2e 2e 2e 2e 2e 2e 2e 20 20 32 37 0d 0a 0d 0a b0 42 2e 20 20 45 58 54 45 4e 44 45 44 20 53 45 ┆........ 27 B. EXTENDED SE┆ 0x14a0…14c0 4c 46 54 45 53 54 f0 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆LFTEST ........................┆ 0x14c0…14e0 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 32 39 0d 0a 20 20 20 20 42 2e 31 20 20 54 65 ┆............... 29 B.1 Te┆ 0x14e0…1500 73 74 20 50 72 6f 63 65 64 75 72 65 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆st Procedure ...................┆ 0x1500…1520 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 32 39 0d 0a 20 20 20 20 42 2e 32 20 ┆.................. 29 B.2 ┆ 0x1520…1540 20 54 65 73 74 73 20 50 65 72 66 6f 72 6d 65 64 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆ Tests Performed ...............┆ 0x1540…1560 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 33 30 0d 0a 20 20 20 20 42 ┆..................... 30 B┆ 0x1560…1580 2e 33 20 20 45 72 72 6f 72 20 43 6f 64 65 73 20 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e ┆.3 Error Codes ................┆ 0x1580…15a0 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 20 33 31 0d 0a 0d 0a ┆........................ 31 ┆ 0x15a0…15c0 b0 43 2e 20 20 53 55 52 56 45 59 20 4f 46 20 53 54 41 54 55 53 20 4d 45 53 53 41 47 45 53 f0 20 ┆ C. SURVEY OF STATUS MESSAGES ┆ 0x15c0…15e0 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 2e 20 ┆............................... ┆ 0x15e0…15e7 20 33 32 0d 0a 0d 0a ┆ 32 ┆ 0x15e7…15ea FormFeed { 0x15e7…15ea 0c 81 b8 ┆ ┆ 0x15e7…15ea } 0x15ea…1600 0a 14 b3 0d 0a 14 b3 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0x1600…1620 (11,) 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0b 0d 0a a1 b0 31 2e 20 20 20 20 20 20 20 49 ┆ 1. I┆ 0x1620…1640 4e 54 52 4f 44 55 43 54 49 4f 4e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 69 73 20 52 43 ┆NTRODUCTION This RC┆ 0x1640…1660 38 35 35 20 6f 70 65 72 61 74 69 6e 67 20 67 75 69 64 65 20 64 65 73 63 72 69 62 65 73 20 6f 70 ┆855 operating guide describes op┆ 0x1660…1680 65 72 61 74 69 6f 6e 20 6f 66 20 74 68 65 20 0a 19 89 80 80 52 43 38 35 35 20 74 65 72 6d 69 6e ┆eration of the RC855 termin┆ 0x1680…16a0 61 6c 20 75 70 20 74 6f 20 74 68 65 20 70 6f 69 6e 74 20 77 68 65 72 65 20 61 20 6c 6f 61 64 65 ┆al up to the point where a loade┆ 0x16a0…16c0 64 20 52 43 38 35 35 20 0a 19 89 80 80 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d ┆d RC855 application program┆ 0x16c0…16e0 20 69 73 20 73 74 61 72 74 65 64 3b 20 69 74 20 69 73 20 6d 65 61 6e 74 20 74 6f 20 62 65 20 75 ┆ is started; it is meant to be u┆ 0x16e0…1700 73 65 64 20 0a 19 89 80 80 74 6f 67 65 74 68 65 72 20 77 69 74 68 20 74 68 65 20 6f 70 65 72 61 ┆sed together with the opera┆ 0x1700…1720 74 69 6e 67 20 67 75 69 64 65 20 6f 72 20 75 73 65 72 27 73 20 67 75 69 64 65 20 66 6f 72 20 0a ┆ting guide or user's guide for ┆ 0x1720…1740 19 89 80 80 74 68 65 20 52 43 38 35 35 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 ┆ the RC855 application progra┆ 0x1740…1760 6d 20 69 6e 20 71 75 65 73 74 69 6f 6e 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 ┆m in question. The ┆ 0x1760…1780 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 20 69 73 20 69 6e 74 72 6f 64 75 63 65 64 20 69 6e 20 ┆RC855 terminal is introduced in ┆ 0x1780…17a0 74 68 65 20 72 65 6d 61 69 6e 69 6e 67 20 73 65 63 80 0a 19 89 80 80 74 69 6f 6e 73 20 6f 66 20 ┆the remaining sec tions of ┆ 0x17a0…17c0 74 68 69 73 20 63 68 61 70 74 65 72 2c 20 61 6e 64 20 74 68 65 6e 20 64 65 73 63 72 69 62 65 64 ┆this chapter, and then described┆ 0x17c0…17e0 20 69 6e 20 64 65 74 61 69 6c 20 69 6e 20 0a 19 89 80 80 43 68 61 70 74 65 72 20 32 2e 20 54 68 ┆ in detail in Chapter 2. Th┆ 0x17e0…1800 65 20 6f 70 65 72 61 74 69 6f 6e 20 6f 66 20 74 68 65 20 52 43 38 35 35 20 69 73 20 65 78 70 6c ┆e operation of the RC855 is expl┆ 0x1800…1820 (12,) 61 69 6e 65 64 20 69 6e 20 0a 19 89 80 80 43 68 61 70 74 65 72 20 33 2e 20 43 68 61 70 74 65 72 ┆ained in Chapter 3. Chapter┆ 0x1820…1840 20 34 20 64 65 73 63 72 69 62 65 73 20 64 61 79 2d 74 6f 2d 64 61 79 20 6d 61 69 6e 74 65 6e 61 ┆ 4 describes day-to-day maintena┆ 0x1840…1860 6e 63 65 20 6f 66 20 0a 19 89 80 80 74 68 65 20 52 43 38 35 35 20 61 6e 64 20 74 68 65 20 63 61 ┆nce of the RC855 and the ca┆ 0x1860…1880 72 65 20 6f 66 20 64 69 73 6b 65 74 74 65 73 2e 20 49 6e 66 6f 72 6d 61 74 69 6f 6e 20 61 62 6f ┆re of diskettes. Information abo┆ 0x1880…18a0 75 74 20 0a 19 89 80 80 6d 61 74 74 65 72 73 20 6f 74 68 65 72 20 74 68 61 6e 20 74 68 65 73 65 ┆ut matters other than these┆ 0x18a0…18c0 20 77 69 6c 6c 20 62 65 20 66 6f 75 6e 64 20 69 6e 20 74 68 65 20 72 65 66 65 72 65 6e 63 65 64 ┆ will be found in the referenced┆ 0x18c0…18e0 20 0a 19 89 80 80 70 75 62 6c 69 63 61 74 69 6f 6e 73 2c 20 77 68 69 63 68 20 61 72 65 20 6c 69 ┆ publications, which are li┆ 0x18e0…1900 73 74 65 64 20 69 6e 20 41 70 70 65 6e 64 69 78 20 41 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 ┆sted in Appendix A. ┆ 0x1900…1920 84 49 74 20 73 68 6f 75 6c 64 20 62 65 20 6e 6f 74 65 64 20 74 68 61 74 20 74 68 69 73 20 6f 70 ┆ It should be noted that this op┆ 0x1920…1940 65 72 61 74 69 6e 67 20 67 75 69 64 65 20 64 65 73 63 72 69 62 65 73 20 0a 19 89 80 80 74 68 65 ┆erating guide describes the┆ 0x1940…1960 20 63 75 72 72 65 6e 74 20 76 65 72 73 69 6f 6e 20 6f 66 20 74 68 65 20 52 43 38 35 35 20 74 65 ┆ current version of the RC855 te┆ 0x1960…1980 72 6d 69 6e 61 6c 2c 20 61 6e 64 20 74 68 61 74 20 73 6f 6d 65 20 0a 19 89 80 80 6f 66 20 74 68 ┆rminal, and that some of th┆ 0x1980…19a0 65 20 66 65 61 74 75 72 65 73 20 6d 65 6e 74 69 6f 6e 65 64 20 61 72 65 20 6e 6f 74 20 61 76 61 ┆e features mentioned are not ava┆ 0x19a0…19c0 69 6c 61 62 6c 65 20 6f 6e 20 6f 6c 64 65 72 20 0a 19 89 80 80 76 65 72 73 69 6f 6e 73 2e 0d 0a ┆ilable on older versions. ┆ 0x19c0…19e0 0d 0a 0d 0a a1 b0 31 2e 31 20 20 20 20 20 20 54 68 65 20 52 43 38 35 35 20 54 65 72 6d 69 6e 61 ┆ 1.1 The RC855 Termina┆ 0x19e0…1a00 6c 20 69 6e 20 42 72 69 65 66 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 6d 69 63 72 ┆l in Brief The micr┆ 0x1a00…1a20 (13,) 6f 63 6f 6d 70 75 74 65 72 20 62 61 73 65 64 20 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 20 63 ┆ocomputer based RC855 terminal c┆ 0x1a20…1a40 6f 6d 70 72 69 73 65 73 20 61 20 0a 19 89 80 80 64 69 73 70 6c 61 79 20 75 6e 69 74 20 61 6e 64 ┆omprises a display unit and┆ 0x1a40…1a60 20 61 20 6b 65 79 62 6f 61 72 64 2e 20 54 68 65 20 64 69 73 70 6c 61 79 20 75 6e 69 74 20 69 73 ┆ a keyboard. The display unit is┆ 0x1a60…1a80 20 70 72 6f 80 0a 19 89 80 80 76 69 64 65 64 20 77 69 74 68 20 73 69 67 6e 61 6c 20 63 61 62 6c ┆ pro vided with signal cabl┆ 0x1a80…1aa0 65 20 63 6f 6e 6e 65 63 74 6f 72 73 20 66 6f 72 20 61 20 64 69 73 6b 20 73 79 73 74 65 6d 2c 20 ┆e connectors for a disk system, ┆ 0x1aa0…1ac0 61 20 0a 19 89 80 80 70 72 69 6e 74 65 72 2c 20 61 20 68 6f 73 74 20 63 6f 6d 70 75 74 65 72 20 ┆a printer, a host computer ┆ 0x1ac0…1ae0 73 79 73 74 65 6d 2c 20 61 6e 64 20 61 20 6c 6f 63 61 6c 20 74 65 72 6d 69 6e 61 6c 20 0a 19 89 ┆system, and a local terminal ┆ 0x1ae0…1b00 80 80 6e 65 74 77 6f 72 6b 2e 20 54 68 65 20 6b 65 79 62 6f 61 72 64 20 6d 61 79 20 62 65 20 65 ┆ network. The keyboard may be e┆ 0x1b00…1b20 71 75 69 70 70 65 64 20 77 69 74 68 20 61 20 6c 6f 63 6b 69 6e 67 20 0a 19 89 80 80 64 65 76 69 ┆quipped with a locking devi┆ 0x1b20…1b40 63 65 20 6f 72 20 61 20 62 61 64 67 65 20 72 65 61 64 65 72 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 ┆ce or a badge reader. ┆ 0x1b40…1b60 20 20 84 54 68 65 20 70 72 65 73 65 6e 74 20 6f 70 65 72 61 74 69 6e 67 20 67 75 69 64 65 20 64 ┆ The present operating guide d┆ 0x1b60…1b80 65 73 63 72 69 62 65 73 20 52 43 38 35 35 20 6f 70 65 72 61 74 69 6f 6e 20 0a 19 89 80 80 66 72 ┆escribes RC855 operation fr┆ 0x1b80…1ba0 6f 6d 20 61 20 68 61 72 64 77 61 72 65 20 70 6f 69 6e 74 20 6f 66 20 76 69 65 77 2e 20 54 68 69 ┆om a hardware point of view. Thi┆ 0x1ba0…1bc0 73 20 6f 70 65 72 61 74 69 6f 6e 20 69 73 20 74 68 65 20 0a 19 89 80 80 73 61 6d 65 20 66 6f 72 ┆s operation is the same for┆ 0x1bc0…1be0 20 61 6c 6c 20 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 73 2c 20 61 70 61 72 74 20 66 72 6f 6d ┆ all RC855 terminals, apart from┆ 0x1be0…1c00 20 64 69 66 66 65 72 65 6e 63 65 73 20 69 6e 20 0a 19 89 80 80 74 68 65 20 6d 61 6e 6e 65 72 20 ┆ differences in the manner ┆ 0x1c00…1c20 (14,) 69 6e 20 77 68 69 63 68 20 74 68 65 20 52 43 38 35 35 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 ┆in which the RC855 application p┆ 0x1c20…1c40 72 6f 67 72 61 6d 20 69 73 20 0a 19 89 80 80 6c 6f 61 64 65 64 20 28 31 2e 32 20 61 6e 64 20 31 ┆rogram is loaded (1.2 and 1┆ 0x1c40…1c60 2e 34 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 52 43 38 35 35 20 69 73 20 a1 ┆.4). The RC855 is ┆ 0x1c60…1c80 72 65 73 65 74 e1 20 77 68 65 6e 20 70 6f 77 65 72 20 69 73 20 61 70 70 6c 69 65 64 2c 20 61 6e ┆reset when power is applied, an┆ 0x1c80…1ca0 64 20 74 68 65 72 65 61 66 74 65 72 20 0a 19 89 80 80 77 68 65 6e 65 76 65 72 20 74 68 65 20 72 ┆d thereafter whenever the r┆ 0x1ca0…1cc0 65 73 65 74 20 62 75 74 74 6f 6e 20 69 73 20 70 72 65 73 73 65 64 2e 20 4f 6e 20 62 65 69 6e 67 ┆eset button is pressed. On being┆ 0x1cc0…1ce0 20 72 65 73 65 74 2c 20 0a 19 89 80 80 74 68 65 20 52 43 38 35 35 20 61 75 74 6f 6d 61 74 69 63 ┆ reset, the RC855 automatic┆ 0x1ce0…1d00 61 6c 6c 79 20 70 65 72 66 6f 72 6d 73 20 61 20 62 75 69 6c 74 2d 69 6e 20 a1 73 65 6c 66 74 65 ┆ally performs a built-in selfte┆ 0x1d00…1d20 73 74 e1 2e 20 41 6e 20 0a 19 89 80 80 52 43 38 35 35 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 ┆st . An RC855 application p┆ 0x1d20…1d40 72 6f 67 72 61 6d 20 63 61 6e 20 74 68 65 6e 20 62 65 20 6c 6f 61 64 65 64 20 69 6e 74 6f 20 74 ┆rogram can then be loaded into t┆ 0x1d40…1d60 68 65 20 0a 19 89 80 80 52 41 4d 20 28 72 61 6e 64 6f 6d 2d 61 63 63 65 73 73 20 6d 65 6d 6f 72 ┆he RAM (random-access memor┆ 0x1d60…1d80 79 29 20 6f 66 20 74 68 65 20 74 65 72 6d 69 6e 61 6c 20 61 6e 64 20 65 78 65 63 75 74 65 64 2e ┆y) of the terminal and executed.┆ 0x1d80…1da0 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 52 43 38 35 35 20 61 70 70 6c 69 63 61 74 ┆ The RC855 applicat┆ 0x1da0…1dc0 69 6f 6e 20 70 72 6f 67 72 61 6d 20 6d 69 67 68 74 2c 20 66 6f 72 20 65 78 61 6d 70 6c 65 2c 20 ┆ion program might, for example, ┆ 0x1dc0…1de0 62 65 20 74 68 65 20 0a 19 89 80 80 52 43 38 35 35 20 49 42 4d 20 33 32 37 30 20 42 53 43 20 65 ┆be the RC855 IBM 3270 BSC e┆ 0x1de0…1e00 6d 75 6c 61 74 6f 72 2c 20 77 68 69 63 68 20 70 65 72 6d 69 74 73 20 74 68 65 20 52 43 38 35 35 ┆mulator, which permits the RC855┆ 0x1e00…1e20 (15,) 20 0a 19 89 80 80 6f 70 65 72 61 74 6f 72 20 74 6f 20 63 6f 6d 6d 75 6e 69 63 61 74 65 20 77 69 ┆ operator to communicate wi┆ 0x1e20…1e40 74 68 20 33 32 37 30 20 6f 72 69 65 6e 74 65 64 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 0a 19 89 ┆th 3270 oriented application ┆ 0x1e40…1e60 80 80 70 72 6f 67 72 61 6d 73 20 72 75 6e 6e 69 6e 67 20 6f 6e 20 61 20 72 65 6d 6f 74 65 20 68 ┆ programs running on a remote h┆ 0x1e60…1e80 6f 73 74 20 63 6f 6d 70 75 74 65 72 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 52 43 38 35 35 ┆ost computer. RC855┆ 0x1e80…1ea0 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 73 20 61 72 65 20 6c 6f 61 64 65 64 ┆ application programs are loaded┆ 0x1ea0…1ec0 20 66 72 6f 6d 20 76 61 72 69 6f 75 73 20 0a 19 89 80 80 6d 65 64 69 61 3a 20 69 6e 74 65 72 6e ┆ from various media: intern┆ 0x1ec0…1ee0 61 6c 20 6d 65 6d 6f 72 79 20 62 6f 61 72 64 73 2c 20 64 69 73 6b 20 73 79 73 74 65 6d 73 2c 20 ┆al memory boards, disk systems, ┆ 0x1ee0…1f00 61 6e 64 20 74 68 65 20 0a 19 89 80 80 6c 6f 63 61 6c 20 74 65 72 6d 69 6e 61 6c 20 6e 65 74 77 ┆and the local terminal netw┆ 0x1f00…1f20 6f 72 6b 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 63 75 72 72 65 6e 74 20 6c 6f ┆ork. The current lo┆ 0x1f20…1f40 61 64 20 6d 65 64 69 75 6d 20 61 73 20 77 65 6c 6c 20 61 73 20 73 65 76 65 72 61 6c 20 6f 74 68 ┆ad medium as well as several oth┆ 0x1f40…1f60 65 72 20 63 6f 6e 66 69 80 0a 19 89 80 80 67 75 72 61 74 69 6f 6e 20 70 61 72 61 6d 65 74 65 72 ┆er confi guration parameter┆ 0x1f60…1f80 73 20 66 6f 72 20 74 68 65 20 69 6e 64 69 76 69 64 75 61 6c 20 74 65 72 6d 69 6e 61 6c 20 61 72 ┆s for the individual terminal ar┆ 0x1f80…1fa0 65 20 0a 8c 83 b0 0a 19 89 80 80 73 74 6f 72 65 64 20 69 6e 20 74 68 65 20 4e 56 4d 20 28 6e 6f ┆e stored in the NVM (no┆ 0x1fa0…1fc0 6e 76 6f 6c 61 74 69 6c 65 20 6d 65 6d 6f 72 79 29 20 6f 66 20 65 61 63 68 20 52 43 38 35 35 2c ┆nvolatile memory) of each RC855,┆ 0x1fc0…1fe0 20 0a 19 89 80 80 77 68 65 72 65 20 74 68 65 79 20 61 72 65 20 75 6e 61 66 66 65 63 74 65 64 20 ┆ where they are unaffected ┆ 0x1fe0…2000 62 79 20 74 68 65 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 61 6e 64 20 72 65 6d 6f 76 61 6c 20 0a ┆by the application and removal ┆ 0x2000…2020 (16,) 19 89 80 80 6f 66 20 70 6f 77 65 72 2e 20 54 68 65 20 76 61 6c 75 65 73 20 6f 66 20 74 68 65 73 ┆ of power. The values of thes┆ 0x2020…2040 65 20 a1 4e 56 4d 20 70 61 72 61 6d 65 74 65 72 73 e1 20 63 61 6e 20 62 65 20 73 65 74 20 0a 19 ┆e NVM parameters can be set ┆ 0x2040…2060 89 80 80 74 6f 20 73 75 69 74 20 74 68 65 20 72 65 71 75 69 72 6d 65 6e 74 73 20 6f 66 20 74 68 ┆ to suit the requirments of th┆ 0x2060…2080 65 20 70 61 72 74 69 63 75 6c 61 72 20 52 43 38 35 35 20 6f 70 65 72 61 74 6f 72 20 0a 19 89 80 ┆e particular RC855 operator ┆ 0x2080…20a0 80 61 73 20 77 65 6c 6c 20 61 73 20 74 68 6f 73 65 20 6f 66 20 61 6e 79 20 74 65 72 6d 69 6e 61 ┆ as well as those of any termina┆ 0x20a0…20c0 6c 20 63 6c 75 73 74 65 72 20 6f 66 20 77 68 69 63 68 20 74 68 65 20 0a 19 89 80 80 52 43 38 35 ┆l cluster of which the RC85┆ 0x20c0…20e0 35 20 69 6e 20 71 75 65 73 74 69 6f 6e 20 69 73 20 61 20 70 61 72 74 2e 0d 0a 0d 0a 20 20 20 20 ┆5 in question is a part. ┆ 0x20e0…2100 20 20 20 20 20 84 54 68 65 20 76 61 6c 75 65 73 20 6f 66 20 74 68 65 20 4e 56 4d 20 70 61 72 61 ┆ The values of the NVM para┆ 0x2100…2120 6d 65 74 65 72 73 20 61 72 65 20 6e 6f 72 6d 61 6c 6c 79 20 73 65 74 20 62 79 20 74 68 65 20 0a ┆meters are normally set by the ┆ 0x2120…2140 19 89 80 80 52 43 38 35 35 20 69 6e 73 74 61 6c 6c 61 74 69 6f 6e 20 65 6e 67 69 6e 65 65 72 2c ┆ RC855 installation engineer,┆ 0x2140…2160 20 62 75 74 20 69 74 20 69 73 20 61 6c 77 61 79 73 20 70 6f 73 73 69 62 6c 65 20 0a 19 89 80 80 ┆ but it is always possible ┆ 0x2160…2180 74 6f 20 63 68 61 6e 67 65 20 74 68 65 6d 20 62 79 20 6d 65 61 6e 73 20 6f 66 20 74 68 65 20 52 ┆to change them by means of the R┆ 0x2180…21a0 43 38 35 35 20 63 6f 6e 66 69 67 75 72 61 74 6f 72 2e 20 54 68 69 73 20 0a 19 89 80 80 75 74 69 ┆C855 configurator. This uti┆ 0x21a0…21c0 6c 69 74 79 20 70 72 6f 67 72 61 6d 20 65 78 69 73 74 73 20 69 6e 20 73 65 76 65 72 61 6c 20 76 ┆lity program exists in several v┆ 0x21c0…21e0 65 72 73 69 6f 6e 73 2c 20 61 73 20 64 65 74 65 72 80 0a 19 89 80 80 6d 69 6e 65 64 20 62 79 20 ┆ersions, as deter mined by ┆ 0x21e0…2200 74 68 65 20 72 65 6c 65 76 61 6e 74 20 52 43 38 35 35 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 ┆the relevant RC855 application p┆ 0x2200…2220 (17,) 72 6f 67 72 61 6d 2e 20 46 6f 72 20 64 65 80 0a 19 89 80 80 73 63 72 69 70 74 69 6f 6e 73 20 6f ┆rogram. For de scriptions o┆ 0x2220…2240 66 20 74 68 65 20 52 43 38 35 35 20 63 6f 6e 66 69 67 75 72 61 74 6f 72 2c 20 73 65 65 20 28 33 ┆f the RC855 configurator, see (3┆ 0x2240…2260 29 2c 20 28 38 29 2c 20 28 39 29 2c 20 0a 19 89 80 80 61 6e 64 20 28 31 30 29 2e 0d 0a 0d 0a 20 ┆), (8), (9), and (10). ┆ 0x2260…2280 20 20 20 20 20 20 20 20 84 54 68 65 20 66 69 72 73 74 20 74 77 65 6e 74 79 2d 66 6f 75 72 20 6c ┆ The first twenty-four l┆ 0x2280…22a0 69 6e 65 73 20 69 6e 20 74 68 65 20 52 43 38 35 35 20 64 69 73 70 6c 61 79 20 73 63 72 65 65 6e ┆ines in the RC855 display screen┆ 0x22a0…22c0 20 0a 19 89 80 80 70 69 63 74 75 72 65 20 61 72 65 20 75 73 65 64 20 66 6f 72 20 61 20 70 6f 73 ┆ picture are used for a pos┆ 0x22c0…22e0 73 69 62 6c 65 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 6d 65 6e 75 20 61 6e 64 20 66 6f 72 20 0a ┆sible application menu and for ┆ 0x22e0…2300 19 89 80 80 69 6e 74 65 72 61 63 74 69 6f 6e 20 62 65 74 77 65 65 6e 20 74 68 65 20 52 43 38 35 ┆ interaction between the RC85┆ 0x2300…2320 35 20 6f 70 65 72 61 74 6f 72 20 61 6e 64 20 74 68 65 20 61 70 70 6c 69 63 61 80 0a 19 89 80 80 ┆5 operator and the applica ┆ 0x2320…2340 74 69 6f 6e 20 70 72 6f 67 72 61 6d 2e 20 54 68 65 20 62 6f 74 74 6f 6d 20 28 74 77 65 6e 74 79 ┆tion program. The bottom (twenty┆ 0x2340…2360 2d 66 69 66 74 68 29 20 6c 69 6e 65 2c 20 77 68 69 63 68 20 69 73 20 0a 19 89 80 80 63 61 6c 6c ┆-fifth) line, which is call┆ 0x2360…2380 65 64 20 74 68 65 20 a1 73 74 61 74 75 73 20 6c 69 6e 65 e1 2c 20 69 73 20 75 73 65 64 20 66 6f ┆ed the status line , is used fo┆ 0x2380…23a0 72 20 6d 65 73 73 61 67 65 73 20 74 6f 20 74 68 65 20 0a 19 89 80 80 6f 70 65 72 61 74 6f 72 2e ┆r messages to the operator.┆ 0x23a0…23c0 0d 0a 0d 0a 0d 0a a1 a1 b0 31 2e 32 20 20 20 20 20 20 53 74 61 6e 64 2d 41 6c 6f 6e 65 20 54 65 ┆ 1.2 Stand-Alone Te┆ 0x23c0…23e0 72 6d 69 6e 61 6c 73 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 52 43 38 35 35 20 6d ┆rminals The RC855 m┆ 0x23e0…2400 61 79 20 62 65 20 70 72 6f 67 72 61 6d 6d 65 64 20 61 73 20 61 20 a1 64 65 64 69 63 61 74 65 64 ┆ay be programmed as a dedicated┆ 0x2400…2420 (18,) 20 74 65 72 6d 69 6e 61 6c e1 20 0a 19 89 80 80 28 64 65 64 69 63 61 74 65 64 20 74 6f 20 72 65 ┆ terminal (dedicated to re┆ 0x2420…2440 6d 6f 74 65 20 68 6f 73 74 20 63 6f 6d 6d 75 6e 69 63 61 74 69 6f 6e 29 2e 20 48 65 72 65 2c 20 ┆mote host communication). Here, ┆ 0x2440…2460 74 68 65 20 0a 19 89 80 80 52 43 38 35 35 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 ┆the RC855 application progr┆ 0x2460…2480 61 6d 20 69 73 20 74 68 65 20 49 42 4d 20 33 32 37 30 20 42 53 43 20 65 6d 75 6c 61 74 6f 72 20 ┆am is the IBM 3270 BSC emulator ┆ 0x2480…24a0 0a 19 89 80 80 6f 72 20 74 68 65 20 54 54 59 20 65 6d 75 6c 61 74 6f 72 2c 20 77 68 69 63 68 20 ┆ or the TTY emulator, which ┆ 0x24a0…24c0 69 73 20 6c 6f 61 64 65 64 20 66 72 6f 6d 20 61 6e 20 69 6e 74 65 72 6e 61 6c 20 0a 19 89 80 80 ┆is loaded from an internal ┆ 0x24c0…24e0 6d 65 6d 6f 72 79 20 62 6f 61 72 64 20 70 65 72 6d 61 6e 65 6e 74 6c 79 20 6d 6f 75 6e 74 65 64 ┆memory board permanently mounted┆ 0x24e0…2500 20 69 6e 20 74 68 65 20 64 69 73 70 6c 61 79 20 75 6e 69 74 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 ┆ in the display unit. ┆ 0x2500…2520 20 20 84 54 68 65 20 52 43 38 35 35 20 6d 61 79 20 61 6c 73 6f 20 62 65 20 70 72 6f 67 72 61 6d ┆ The RC855 may also be program┆ 0x2520…2540 6d 65 64 20 61 73 20 61 20 a1 77 6f 72 6b 20 73 74 61 74 69 6f 6e e1 2e 20 0a 19 89 80 80 48 65 ┆med as a work station . He┆ 0x2540…2560 72 65 2c 20 74 68 65 20 52 43 38 35 35 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 ┆re, the RC855 application progra┆ 0x2560…2580 6d 20 69 73 20 74 68 65 20 43 50 2f 4d 20 6f 70 65 72 61 74 80 0a 19 89 80 80 69 6e 67 20 73 79 ┆m is the CP/M operat ing sy┆ 0x2580…25a0 73 74 65 6d 2c 20 77 68 69 63 68 20 69 73 20 6c 6f 61 64 65 64 20 66 72 6f 6d 20 61 20 64 69 73 ┆stem, which is loaded from a dis┆ 0x25a0…25c0 6b 20 73 79 73 74 65 6d 20 63 6f 6e 6e 65 63 74 65 64 20 0a 19 89 80 80 74 6f 20 74 68 65 20 64 ┆k system connected to the d┆ 0x25c0…25e0 69 73 70 6c 61 79 20 75 6e 69 74 2e 20 54 68 65 20 52 43 38 35 35 20 6d 61 79 20 74 68 65 6e 20 ┆isplay unit. The RC855 may then ┆ 0x25e0…2600 62 65 20 61 6c 74 65 72 6e 61 74 65 6c 79 20 0a 19 89 80 80 75 73 65 64 20 66 6f 72 20 72 65 6d ┆be alternately used for rem┆ 0x2600…2620 (19,) 6f 74 65 20 68 6f 73 74 20 63 6f 6d 6d 75 6e 69 63 61 74 69 6f 6e 20 61 6e 64 20 6c 6f 63 61 6c ┆ote host communication and local┆ 0x2620…2640 20 70 72 6f 63 65 73 73 69 6e 67 20 0a 19 89 80 80 61 70 70 6c 69 63 61 74 69 6f 6e 73 2e 0d 0a ┆ processing applications. ┆ 0x2640…2660 0d 0a 20 20 20 20 20 20 20 20 20 84 41 20 73 74 61 6e 64 2d 61 6c 6f 6e 65 20 52 43 38 35 35 20 ┆ A stand-alone RC855 ┆ 0x2660…2680 64 65 64 69 63 61 74 65 64 20 74 65 72 6d 69 6e 61 6c 20 6f 72 20 77 6f 72 6b 20 73 74 61 74 69 ┆dedicated terminal or work stati┆ 0x2680…26a0 6f 6e 20 0a 19 89 80 80 63 61 6e 20 61 6c 77 61 79 73 20 66 75 6e 63 74 69 6f 6e 20 61 73 20 61 ┆on can always function as a┆ 0x26a0…26c0 6e 20 49 42 4d 20 33 32 37 30 20 42 53 43 20 43 55 2f 44 69 73 70 6c 61 79 20 53 74 61 80 0a 19 ┆n IBM 3270 BSC CU/Display Sta ┆ 0x26c0…26e0 89 80 80 74 69 6f 6e 20 28 63 66 2e 20 53 65 63 74 2e 20 31 2e 33 29 2e 0d 0a 0d 0a 20 20 20 20 ┆ tion (cf. Sect. 1.3). ┆ 0x26e0…2700 20 20 20 20 20 84 54 68 65 20 52 43 38 35 35 20 63 61 6e 20 61 6c 73 6f 20 62 65 20 70 61 72 74 ┆ The RC855 can also be part┆ 0x2700…2720 20 6f 66 20 61 20 74 65 72 6d 69 6e 61 6c 20 63 6c 75 73 74 65 72 2c 20 62 61 73 65 64 20 0a 19 ┆ of a terminal cluster, based ┆ 0x2720…2740 89 80 80 65 69 74 68 65 72 20 6f 6e 20 74 68 65 20 52 43 38 35 35 20 69 74 73 65 6c 66 20 6f 72 ┆ either on the RC855 itself or┆ 0x2740…2760 20 6f 6e 20 74 68 65 20 52 43 38 39 30 20 63 6f 6e 74 72 6f 6c 20 75 6e 69 74 2e 0d 0a 0d 0a 0d ┆ on the RC890 control unit. ┆ 0x2760…2780 0a a1 b0 31 2e 33 20 20 20 20 20 20 52 43 38 35 35 20 42 61 73 65 64 20 54 65 72 6d 69 6e 61 6c ┆ 1.3 RC855 Based Terminal┆ 0x2780…27a0 20 43 6c 75 73 74 65 72 73 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 41 20 74 65 72 6d 69 6e 61 ┆ Clusters A termina┆ 0x27a0…27c0 6c 20 63 6c 75 73 74 65 72 20 62 61 73 65 64 20 65 6e 74 69 72 65 6c 79 20 6f 6e 20 74 68 65 20 ┆l cluster based entirely on the ┆ 0x27c0…27e0 52 43 38 35 35 20 6d 61 79 20 0a 19 89 80 80 63 6f 6d 70 72 69 73 65 20 61 20 6d 61 78 69 6d 75 ┆RC855 may comprise a maximu┆ 0x27e0…2800 6d 20 6f 66 20 65 69 67 68 74 20 64 65 64 69 63 61 74 65 64 20 74 65 72 6d 69 6e 61 6c 73 20 61 ┆m of eight dedicated terminals a┆ 0x2800…2820 (20,) 6e 64 2f 6f 72 20 0a 19 89 80 80 77 6f 72 6b 20 73 74 61 74 69 6f 6e 73 2c 20 69 6e 74 65 72 63 ┆nd/or work stations, interc┆ 0x2820…2840 6f 6e 6e 65 63 74 65 64 20 62 79 20 6d 65 61 6e 73 20 6f 66 20 a1 52 63 43 69 72 63 75 69 74 e1 ┆onnected by means of RcCircuit ┆ 0x2840…2860 2c 20 61 20 0a 19 89 80 80 6d 75 6c 74 69 64 72 6f 70 70 65 64 20 74 65 72 6d 69 6e 61 6c 20 6e ┆, a multidropped terminal n┆ 0x2860…2880 65 74 77 6f 72 6b 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 41 20 63 6c 75 73 74 65 72 20 6f ┆etwork. A cluster o┆ 0x2880…28a0 66 20 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 73 20 72 75 6e 6e 69 6e 67 20 74 68 65 20 49 42 ┆f RC855 terminals running the IB┆ 0x28a0…28c0 4d 20 33 32 37 30 20 42 53 43 20 0a 19 89 80 80 65 6d 75 6c 61 74 6f 72 20 77 69 6c 6c 20 63 6f ┆M 3270 BSC emulator will co┆ 0x28c0…28e0 6d 6d 75 6e 69 63 61 74 65 20 77 69 74 68 20 61 20 68 6f 73 74 20 63 6f 6d 70 75 74 65 72 20 73 ┆mmunicate with a host computer s┆ 0x28e0…2900 79 73 74 65 6d 20 69 6e 20 0a 19 89 80 80 74 68 65 20 73 61 6d 65 20 6d 61 6e 6e 65 72 20 61 73 ┆ystem in the same manner as┆ 0x2900…2920 20 61 6e 20 49 42 4d 20 33 32 37 30 20 63 6c 75 73 74 65 72 20 63 6f 6e 74 72 6f 6c 20 75 6e 69 ┆ an IBM 3270 cluster control uni┆ 0x2920…2940 74 20 28 43 55 29 20 0a 19 89 80 80 75 73 69 6e 67 20 74 68 65 20 42 53 43 20 63 6f 6d 6d 75 6e ┆t (CU) using the BSC commun┆ 0x2940…2960 69 63 61 74 69 6f 6e 20 6c 69 6e 65 20 70 72 6f 74 6f 63 6f 6c 2e 20 4f 6e 65 20 6f 66 20 74 68 ┆ication line protocol. One of th┆ 0x2960…2980 65 20 0a 8c 83 c8 0a 19 89 80 80 74 65 72 6d 69 6e 61 6c 73 20 69 6e 20 74 68 65 20 63 6c 75 73 ┆e terminals in the clus┆ 0x2980…29a0 74 65 72 20 72 75 6e 73 20 74 68 65 20 22 43 55 2f 44 69 73 70 6c 61 79 20 53 74 61 74 69 6f 6e ┆ter runs the "CU/Display Station┆ 0x29a0…29c0 22 20 0a 19 89 80 80 70 61 72 74 20 6f 66 20 74 68 65 20 65 6d 75 6c 61 74 6f 72 3b 20 74 68 69 ┆" part of the emulator; thi┆ 0x29c0…29e0 73 20 69 73 20 74 68 65 20 a1 70 72 69 6d 61 72 79 20 74 65 72 6d 69 6e 61 6c e1 2e 20 54 68 65 ┆s is the primary terminal . The┆ 0x29e0…2a00 20 0a 19 89 80 80 6f 74 68 65 72 20 74 65 72 6d 69 6e 61 6c 73 20 69 6e 20 74 68 65 20 63 6c 75 ┆ other terminals in the clu┆ 0x2a00…2a20 (21,) 73 74 65 72 20 72 75 6e 20 74 68 65 20 22 44 69 73 70 6c 61 79 20 53 74 61 74 69 6f 6e 22 20 0a ┆ster run the "Display Station" ┆ 0x2a20…2a40 19 89 80 80 70 61 72 74 20 6f 66 20 74 68 65 20 65 6d 75 6c 61 74 6f 72 3b 20 74 68 65 73 65 20 ┆ part of the emulator; these ┆ 0x2a40…2a60 61 72 65 20 a1 73 65 63 6f 6e 64 61 72 79 20 74 65 72 6d 69 6e 61 6c 73 e1 2e 20 0a 19 89 80 80 ┆are secondary terminals . ┆ 0x2a60…2a80 46 72 6f 6d 20 74 68 65 20 75 73 65 72 27 73 20 76 69 65 77 70 6f 69 6e 74 20 74 68 65 20 74 77 ┆From the user's viewpoint the tw┆ 0x2a80…2aa0 6f 20 74 79 70 65 73 20 6f 66 20 74 65 72 6d 69 6e 61 6c 73 20 0a 19 89 80 80 68 61 76 65 20 74 ┆o types of terminals have t┆ 0x2aa0…2ac0 68 65 20 73 61 6d 65 20 66 75 6e 63 74 69 6f 6e 73 2e 09 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 ┆he same functions. ┆ 0x2ac0…2ae0 84 42 79 20 6d 65 61 6e 73 20 6f 66 20 61 20 34 2d 6c 69 6e 65 20 73 79 6e 63 68 72 6f 6e 6f 75 ┆ By means of a 4-line synchronou┆ 0x2ae0…2b00 73 20 56 2e 32 34 20 6d 6f 64 65 6d 20 6d 75 6c 74 69 70 6c 65 78 65 72 2c 20 0a 19 89 80 80 63 ┆s V.24 modem multiplexer, c┆ 0x2b00…2b20 61 6c 6c 65 64 20 74 68 65 20 52 43 38 30 30 2d 31 39 2c 20 61 73 20 6d 61 6e 79 20 61 73 20 66 ┆alled the RC800-19, as many as f┆ 0x2b20…2b40 6f 75 72 20 70 72 69 6d 61 72 79 20 74 65 72 6d 69 6e 61 6c 73 20 0a 19 89 80 80 6d 61 79 20 73 ┆our primary terminals may s┆ 0x2b40…2b60 68 61 72 65 20 61 20 73 69 6e 67 6c 65 20 6d 6f 64 65 6d 20 61 6e 64 20 63 6f 6d 6d 75 6e 69 63 ┆hare a single modem and communic┆ 0x2b60…2b80 61 74 69 6f 6e 20 6c 69 6e 65 20 74 6f 20 61 20 0a 19 89 80 80 68 6f 73 74 20 73 79 73 74 65 6d ┆ation line to a host system┆ 0x2b80…2ba0 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 77 6f 20 6b 69 6e 64 73 20 6f 66 20 6e 65 74 77 ┆. Two kinds of netw┆ 0x2ba0…2bc0 6f 72 6b 20 63 6f 6e 6e 65 63 74 69 6f 6e 73 20 63 61 6e 20 62 65 20 75 73 65 64 20 69 6e 20 63 ┆ork connections can be used in c┆ 0x2bc0…2be0 6f 6e 6a 75 6e 63 80 0a 19 89 80 80 74 69 6f 6e 20 77 69 74 68 20 74 68 65 20 52 43 38 35 35 20 ┆onjunc tion with the RC855 ┆ 0x2be0…2c00 49 42 4d 20 33 32 37 30 20 42 53 43 20 65 6d 75 6c 61 74 6f 72 20 28 61 6e 64 20 49 42 4d 20 0a ┆IBM 3270 BSC emulator (and IBM ┆ 0x2c00…2c20 (22,) 19 89 80 80 32 37 38 30 2f 33 37 38 30 20 42 53 43 20 65 6d 75 6c 61 74 6f 72 29 3a 0d 0a 0d 0a ┆ 2780/3780 BSC emulator): ┆ 0x2c20…2c40 20 20 20 20 20 20 20 20 20 2d 20 84 44 41 54 45 4c 20 63 6f 6e 6e 65 63 74 69 6f 6e 73 2c 20 77 ┆ - DATEL connections, w┆ 0x2c40…2c60 68 65 72 65 20 61 20 56 2e 32 34 20 69 6e 74 65 72 66 61 63 65 20 69 73 20 75 73 65 64 20 0a 19 ┆here a V.24 interface is used ┆ 0x2c60…2c80 8b 80 80 62 65 74 77 65 65 6e 20 74 68 65 20 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 20 61 6e ┆ between the RC855 terminal an┆ 0x2c80…2ca0 64 20 74 68 65 20 63 6f 6e 6e 65 63 74 69 6f 6e 20 65 71 75 69 70 80 0a 19 8b 80 80 6d 65 6e 74 ┆d the connection equip ment┆ 0x2ca0…2cc0 20 28 6d 6f 64 65 6d 29 20 61 6e 64 20 74 68 65 20 64 61 74 61 20 6e 65 74 77 6f 72 6b 20 69 73 ┆ (modem) and the data network is┆ 0x2cc0…2ce0 20 61 6e 20 6f 72 64 69 6e 61 72 79 20 0a 19 8b 80 80 74 65 6c 65 70 68 6f 6e 65 20 6e 65 74 77 ┆ an ordinary telephone netw┆ 0x2ce0…2d00 6f 72 6b 3b 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2d 20 84 44 41 54 45 58 20 63 6f 6e 6e 65 63 ┆ork; - DATEX connec┆ 0x2d00…2d20 74 69 6f 6e 73 2c 20 77 68 65 72 65 20 61 6e 20 58 2e 32 31 20 69 6e 74 65 72 66 61 63 65 20 69 ┆tions, where an X.21 interface i┆ 0x2d20…2d40 73 20 75 73 65 64 20 0a 19 8b 80 80 62 65 74 77 65 65 6e 20 74 68 65 20 52 43 38 35 35 20 74 65 ┆s used between the RC855 te┆ 0x2d40…2d60 72 6d 69 6e 61 6c 20 61 6e 64 20 74 68 65 20 63 6f 6e 6e 65 63 74 69 6f 6e 20 65 71 75 69 70 80 ┆rminal and the connection equip ┆ 0x2d60…2d80 0a 19 8b 80 80 6d 65 6e 74 20 28 44 43 45 29 20 61 6e 64 20 74 68 65 20 64 61 74 61 20 6e 65 74 ┆ ment (DCE) and the data net┆ 0x2d80…2da0 77 6f 72 6b 20 69 73 20 61 20 74 72 75 65 20 70 75 62 6c 69 63 20 64 61 74 61 20 0a 19 8b 80 80 ┆work is a true public data ┆ 0x2da0…2dc0 6e 65 74 77 6f 72 6b 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 41 20 74 65 72 6d 69 6e 61 6c ┆network. A terminal┆ 0x2dc0…2de0 20 69 73 20 61 6c 77 61 79 73 20 70 68 79 73 69 63 61 6c 6c 79 20 70 72 65 73 65 6e 74 20 69 6e ┆ is always physically present in┆ 0x2de0…2e00 20 61 20 63 6c 75 73 74 65 72 2c 20 62 79 20 0a 19 89 80 80 76 69 72 74 75 65 20 6f 66 20 74 68 ┆ a cluster, by virtue of th┆ 0x2e00…2e20 (23,) 65 20 52 63 43 69 72 63 75 69 74 20 63 6f 6e 6e 65 63 74 69 6f 6e 3b 20 6c 6f 67 69 63 61 6c 6c ┆e RcCircuit connection; logicall┆ 0x2e20…2e40 79 2c 20 68 6f 77 65 76 65 72 2c 20 0a 19 89 80 80 61 20 74 65 72 6d 69 6e 61 6c 20 63 61 6e 20 ┆y, however, a terminal can ┆ 0x2e40…2e60 6c 65 61 76 65 20 74 68 65 20 63 6c 75 73 74 65 72 20 61 73 20 66 6f 6c 6c 6f 77 73 3a 0d 0a 0d ┆leave the cluster as follows: ┆ 0x2e60…2e80 0a 20 20 20 20 20 20 20 20 20 84 41 20 64 65 64 69 63 61 74 65 64 20 74 65 72 6d 69 6e 61 6c 20 ┆ A dedicated terminal ┆ 0x2e80…2ea0 6d 61 79 20 6c 65 61 76 65 20 74 68 65 20 63 6c 75 73 74 65 72 20 61 6e 64 2c 20 61 73 20 61 20 ┆may leave the cluster and, as a ┆ 0x2ea0…2ec0 0a 19 89 80 80 73 74 61 6e 64 2d 61 6c 6f 6e 65 20 52 43 38 35 35 20 65 71 75 69 70 70 65 64 20 ┆ stand-alone RC855 equipped ┆ 0x2ec0…2ee0 77 69 74 68 20 69 74 73 20 6f 77 6e 20 68 6f 73 74 20 63 6f 6e 6e 65 63 74 69 6f 6e 2c 20 0a 19 ┆with its own host connection, ┆ 0x2ee0…2f00 89 80 80 66 75 6e 63 74 69 6f 6e 20 69 6e 73 74 65 61 64 20 61 73 20 61 6e 20 61 73 79 6e 63 68 ┆ function instead as an asynch┆ 0x2f00…2f20 72 6f 6e 6f 75 73 20 54 54 59 20 74 65 72 6d 69 6e 61 6c 2e 20 54 68 69 73 20 0a 19 89 80 80 66 ┆ronous TTY terminal. This f┆ 0x2f20…2f40 65 61 74 75 72 65 20 69 73 20 6e 6f 74 20 61 76 61 69 6c 61 62 6c 65 20 6f 6e 20 6f 6c 64 65 72 ┆eature is not available on older┆ 0x2f40…2f60 20 76 65 72 73 69 6f 6e 73 20 6f 66 20 74 68 65 20 52 43 38 35 35 20 0a 19 89 80 80 28 44 53 55 ┆ versions of the RC855 (DSU┆ 0x2f60…2f80 36 31 39 20 61 6e 64 20 65 61 72 6c 69 65 72 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 41 ┆619 and earlier). A┆ 0x2f80…2fa0 20 77 6f 72 6b 20 73 74 61 74 69 6f 6e 20 6d 61 79 20 61 6c 73 6f 20 6c 65 61 76 65 20 74 68 65 ┆ work station may also leave the┆ 0x2fa0…2fc0 20 63 6c 75 73 74 65 72 20 61 6e 64 20 62 65 20 75 73 65 64 20 0a 19 89 80 80 69 6e 73 74 65 61 ┆ cluster and be used instea┆ 0x2fc0…2fe0 64 20 66 6f 72 20 6c 6f 63 61 6c 20 70 72 6f 63 65 73 73 69 6e 67 20 6f 72 2c 20 69 66 20 65 71 ┆d for local processing or, if eq┆ 0x2fe0…3000 75 69 70 70 65 64 20 77 69 74 68 20 69 74 73 20 0a 19 89 80 80 6f 77 6e 20 68 6f 73 74 20 63 6f ┆uipped with its own host co┆ 0x3000…3020 (24,) 6e 6e 65 63 74 69 6f 6e 2c 20 72 65 6d 6f 74 65 20 68 6f 73 74 20 63 6f 6d 6d 75 6e 69 63 61 74 ┆nnection, remote host communicat┆ 0x3020…3040 69 6f 6e 20 28 49 42 4d 20 33 32 37 30 20 0a 19 89 80 80 42 53 43 2c 20 49 42 4d 20 32 37 38 30 ┆ion (IBM 3270 BSC, IBM 2780┆ 0x3040…3060 2f 33 37 38 30 20 42 53 43 2c 20 61 6e 64 20 54 54 59 20 65 6d 75 6c 61 74 6f 72 73 29 2e 0d 0a ┆/3780 BSC, and TTY emulators). ┆ 0x3060…3080 0d 0a 20 20 20 20 20 20 20 20 20 84 41 20 70 72 69 6d 61 72 79 20 74 65 72 6d 69 6e 61 6c 20 6d ┆ A primary terminal m┆ 0x3080…30a0 61 79 20 6e 6f 74 20 6c 65 61 76 65 20 74 68 65 20 63 6c 75 73 74 65 72 2c 20 69 2e 65 2e 20 72 ┆ay not leave the cluster, i.e. r┆ 0x30a0…30c0 75 6e 20 0a 19 89 80 80 61 6e 6f 74 68 65 72 20 70 72 6f 67 72 61 6d 20 6f 72 20 62 65 20 70 6f ┆un another program or be po┆ 0x30c0…30e0 77 65 72 65 64 20 6f 66 66 2c 20 73 6f 20 6c 6f 6e 67 20 61 73 20 61 20 73 65 63 6f 6e 64 61 80 ┆wered off, so long as a seconda ┆ 0x30e0…3100 0a 19 89 80 80 72 79 20 74 65 72 6d 69 6e 61 6c 20 72 65 6d 61 69 6e 73 20 6c 6f 67 69 63 61 6c ┆ ry terminal remains logical┆ 0x3100…3120 6c 79 20 69 6e 20 74 68 65 20 63 6c 75 73 74 65 72 2e 0d 0a 0d 0a 0d 0a a1 b0 31 2e 34 20 20 20 ┆ly in the cluster. 1.4 ┆ 0x3120…3140 20 20 20 52 43 38 39 30 20 42 61 73 65 64 20 54 65 72 6d 69 6e 61 6c 20 43 6c 75 73 74 65 72 73 ┆ RC890 Based Terminal Clusters┆ 0x3140…3160 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 41 20 74 65 72 6d 69 6e 61 6c 20 63 6c 75 73 74 65 72 ┆ A terminal cluster┆ 0x3160…3180 20 62 61 73 65 64 20 6f 6e 20 74 68 65 20 52 43 38 39 30 20 63 6f 6e 74 72 6f 6c 20 75 6e 69 74 ┆ based on the RC890 control unit┆ 0x3180…31a0 20 28 43 55 29 20 0a 19 89 80 80 6d 61 79 20 63 6f 6d 70 72 69 73 65 20 61 20 6d 61 78 69 6d 75 ┆ (CU) may comprise a maximu┆ 0x31a0…31c0 6d 20 6f 66 20 74 68 69 72 74 79 2d 74 77 6f 20 64 65 64 69 63 61 74 65 64 20 74 65 72 6d 69 6e ┆m of thirty-two dedicated termin┆ 0x31c0…31e0 61 6c 73 20 0a 19 89 80 80 61 6e 64 2f 6f 72 20 77 6f 72 6b 20 73 74 61 74 69 6f 6e 73 2c 20 63 ┆als and/or work stations, c┆ 0x31e0…3200 6f 6e 6e 65 63 74 65 64 20 62 79 20 6d 65 61 6e 73 20 6f 66 20 52 63 43 69 72 63 75 69 74 2e 20 ┆onnected by means of RcCircuit. ┆ 0x3200…3220 (25,) 0a 19 89 80 80 54 68 65 73 65 20 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 73 20 6d 61 79 20 61 ┆ These RC855 terminals may a┆ 0x3220…3240 63 63 65 73 73 20 68 6f 73 74 20 73 79 73 74 65 6d 73 20 75 73 69 6e 67 20 74 68 65 20 0a 19 89 ┆ccess host systems using the ┆ 0x3240…3260 80 80 53 4e 41 2f 53 44 4c 43 20 61 73 20 77 65 6c 6c 20 61 73 20 74 68 65 20 42 53 43 20 70 72 ┆ SNA/SDLC as well as the BSC pr┆ 0x3260…3280 6f 74 6f 63 6f 6c 20 66 6f 72 20 72 65 6d 6f 74 65 20 63 6f 6e 6e 65 63 74 80 0a 19 89 80 80 69 ┆otocol for remote connect i┆ 0x3280…32a0 6f 6e 20 6f 66 20 49 42 4d 20 33 32 37 30 20 44 69 73 70 6c 61 79 20 53 74 61 74 69 6f 6e 73 2e ┆on of IBM 3270 Display Stations.┆ 0x32a0…32a4 0d 0a 0d 0a ┆ ┆ 0x32a4…32a7 FormFeed { 0x32a4…32a7 0c 83 b8 ┆ ┆ 0x32a4…32a7 } 0x32a7…32c0 0a 20 20 20 20 20 20 20 20 20 84 41 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 ┆ Application pr┆ 0x32c0…32e0 6f 67 72 61 6d 73 20 66 6f 72 20 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 73 20 63 6f 6e 6e 65 ┆ograms for RC855 terminals conne┆ 0x32e0…3300 63 74 65 64 20 74 6f 20 0a 19 89 80 80 74 68 65 20 52 43 38 39 30 20 63 6f 6e 74 72 6f 6c 20 75 ┆cted to the RC890 control u┆ 0x3300…3320 6e 69 74 20 61 72 65 20 64 6f 77 6e 6c 69 6e 65 20 6c 6f 61 64 65 64 20 66 72 6f 6d 20 64 69 73 ┆nit are downline loaded from dis┆ 0x3320…3340 6b 80 0a 19 89 80 80 65 74 74 65 2c 20 61 66 74 65 72 20 73 65 6c 65 63 74 69 6f 6e 20 66 72 6f ┆k ette, after selection fro┆ 0x3340…3360 6d 20 61 20 75 73 65 72 2d 73 70 65 63 69 66 69 65 64 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 0a ┆m a user-specified application ┆ 0x3360…3380 19 89 80 80 6d 65 6e 75 2e 20 57 6f 72 6b 20 73 74 61 74 69 6f 6e 73 20 6d 61 79 20 62 65 20 75 ┆ menu. Work stations may be u┆ 0x3380…33a0 73 65 64 20 66 6f 72 20 6c 6f 63 61 6c 20 70 72 6f 63 65 73 73 69 6e 67 20 61 73 20 0a 19 89 80 ┆sed for local processing as ┆ 0x33a0…33c0 80 77 65 6c 6c 20 61 73 20 72 65 6d 6f 74 65 20 68 6f 73 74 20 63 6f 6d 6d 75 6e 69 63 61 74 69 ┆ well as remote host communicati┆ 0x33c0…33e0 6f 6e 20 28 63 66 2e 20 53 65 63 74 2e 20 32 2e 33 2e 33 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 ┆on (cf. Sect. 2.3.3). ┆ 0x33e0…3400 20 20 84 46 6f 72 20 61 20 64 65 74 61 69 6c 65 64 20 64 65 73 63 72 69 70 74 69 6f 6e 20 6f 66 ┆ For a detailed description of┆ 0x3400…3420 (26,) 20 74 68 65 20 76 61 72 69 6f 75 73 20 63 6f 6e 66 69 67 75 72 61 74 69 6f 6e 20 0a 19 89 80 80 ┆ the various configuration ┆ 0x3420…3440 70 6f 73 73 69 62 69 6c 69 74 69 65 73 20 69 6e 20 74 68 65 20 52 43 38 35 35 20 74 65 72 6d 69 ┆possibilities in the RC855 termi┆ 0x3440…345a 6e 61 6c 20 73 79 73 74 65 6d 2c 20 73 65 65 20 28 31 29 2e 0d 0a 0d 0a 0d 0a ┆nal system, see (1). ┆ 0x345a…345d FormFeed { 0x345a…345d 0c 80 d0 ┆ ┆ 0x345a…345d } 0x345d…3460 0a a1 b0 ┆ ┆ 0x3460…3480 32 2e 20 20 20 20 20 20 20 54 48 45 20 52 43 38 35 35 20 54 45 52 4d 49 4e 41 4c 0d 0a 0d 0a 20 ┆2. THE RC855 TERMINAL ┆ 0x3480…34a0 20 20 20 20 20 20 20 20 84 54 68 65 20 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 20 63 6f 6d 70 ┆ The RC855 terminal comp┆ 0x34a0…34c0 72 69 73 65 73 20 61 20 64 69 73 70 6c 61 79 20 75 6e 69 74 20 61 6e 64 20 61 20 6b 65 79 80 0a ┆rises a display unit and a key ┆ 0x34c0…34e0 19 89 80 80 62 6f 61 72 64 2e 20 54 68 65 73 65 20 74 77 6f 20 62 61 73 69 63 20 63 6f 6d 70 6f ┆ board. These two basic compo┆ 0x34e0…3500 6e 65 6e 74 73 20 61 72 65 20 73 68 6f 77 6e 20 69 6e 20 46 69 67 75 72 65 20 31 2c 20 0a 19 89 ┆nents are shown in Figure 1, ┆ 0x3500…3520 80 80 61 6e 64 20 64 65 73 63 72 69 62 65 64 20 72 65 73 70 65 63 74 69 76 65 6c 79 20 69 6e 20 ┆ and described respectively in ┆ 0x3520…3540 53 65 63 74 69 6f 6e 73 20 32 2e 31 20 61 6e 64 20 32 2e 32 2e 20 0a 19 89 80 80 53 65 63 74 69 ┆Sections 2.1 and 2.2. Secti┆ 0x3540…3560 6f 6e 20 32 2e 33 20 63 6f 6e 74 61 69 6e 73 20 67 65 6e 65 72 61 6c 20 6f 70 65 72 61 74 69 6e ┆on 2.3 contains general operatin┆ 0x3560…3580 67 20 69 6e 66 6f 72 6d 61 74 69 6f 6e 2c 20 0a 19 89 80 80 77 68 69 63 68 20 69 73 20 65 73 73 ┆g information, which is ess┆ 0x3580…35a0 65 6e 74 69 61 6c 20 74 6f 20 61 6e 20 75 6e 64 65 72 73 74 61 6e 64 69 6e 67 20 6f 66 20 74 68 ┆ential to an understanding of th┆ 0x35a0…35c0 65 20 70 72 6f 63 65 64 75 72 65 73 20 0a 19 89 80 80 64 65 73 63 72 69 62 65 64 20 69 6e 20 43 ┆e procedures described in C┆ 0x35c0…35e0 68 61 70 74 65 72 20 33 2e 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d ┆hapter 3. ┆ 0x35e0…3600 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 20 20 20 ┆ ┆ 0x3600…3620 (27,) 20 20 20 20 20 20 46 69 67 2e 20 31 2e 20 52 43 38 35 35 20 54 65 72 6d 69 6e 61 6c 2c 20 44 69 ┆ Fig. 1. RC855 Terminal, Di┆ 0x3620…3640 73 70 6c 61 79 20 55 6e 69 74 20 61 6e 64 20 4b 65 79 62 6f 61 72 64 2e 0d 0a 0d 0a 0d 0a a1 b0 ┆splay Unit and Keyboard. ┆ 0x3640…3660 32 2e 31 20 20 20 20 20 20 44 69 73 70 6c 61 79 20 55 6e 69 74 0d 0a 0d 0a 20 20 20 20 20 20 20 ┆2.1 Display Unit ┆ 0x3660…3680 20 20 84 54 68 65 20 64 69 73 70 6c 61 79 20 75 6e 69 74 20 68 61 73 20 61 20 6e 75 6d 62 65 72 ┆ The display unit has a number┆ 0x3680…36a0 20 6f 66 20 65 72 67 6f 6e 6f 6d 69 63 20 66 65 61 74 75 72 65 73 20 61 6e 64 20 0a 19 89 80 80 ┆ of ergonomic features and ┆ 0x36a0…36c0 63 6f 6e 74 72 6f 6c 73 2e 20 54 68 65 20 62 61 63 6b 20 70 61 6e 65 6c 20 6f 66 20 74 68 65 20 ┆controls. The back panel of the ┆ 0x36c0…36e0 62 61 73 65 20 6f 66 20 74 68 65 20 64 69 73 70 6c 61 79 20 75 6e 69 74 20 0a 19 89 80 80 63 6f ┆base of the display unit co┆ 0x36e0…3700 6e 74 61 69 6e 73 20 76 61 72 69 6f 75 73 20 63 61 62 6c 65 20 63 6f 6e 6e 65 63 74 6f 72 73 20 ┆ntains various cable connectors ┆ 0x3700…3720 61 6e 64 20 6f 70 65 72 61 74 69 6e 67 20 63 6f 6e 80 0a 19 89 80 80 74 72 6f 6c 73 2e 0d 0a 0d ┆and operating con trols. ┆ 0x3720…3740 0a 0d 0a a1 b0 32 2e 31 2e 31 20 20 20 20 45 72 67 6f 6e 6f 6d 69 63 20 46 65 61 74 75 72 65 73 ┆ 2.1.1 Ergonomic Features┆ 0x3740…3760 20 61 6e 64 20 43 6f 6e 74 72 6f 6c 73 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 84 a1 e1 b0 ┆ and Controls . ┆ 0x3760…3780 44 69 73 70 6c 61 79 20 53 63 72 65 65 6e 20 48 6f 72 69 7a 6f 6e 74 61 6c 20 41 6e 67 6c 65 0d ┆Display Screen Horizontal Angle ┆ 0x3780…37a0 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 54 68 65 20 68 6f 72 69 7a 6f 6e 74 61 6c 20 61 6e ┆ The horizontal an┆ 0x37a0…37c0 67 6c 65 20 6f 66 20 74 68 65 20 64 69 73 70 6c 61 79 20 73 63 72 65 65 6e 20 63 61 6e 20 62 65 ┆gle of the display screen can be┆ 0x37c0…37e0 20 0a 19 8b 80 80 61 64 6a 75 73 74 65 64 20 62 79 20 74 75 72 6e 69 6e 67 20 74 68 65 20 64 69 ┆ adjusted by turning the di┆ 0x37e0…3800 73 70 6c 61 79 20 75 6e 69 74 20 28 77 68 69 63 68 20 69 73 20 6d 6f 75 6e 74 65 64 20 0a 19 8b ┆splay unit (which is mounted ┆ 0x3800…3820 (28,) 80 80 6f 6e 20 61 20 73 77 69 76 65 6c 29 20 66 72 6f 6d 20 73 69 64 65 20 74 6f 20 73 69 64 65 ┆ on a swivel) from side to side┆ 0x3820…3840 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 44 69 73 70 6c 61 79 20 53 63 72 65 65 ┆. . Display Scree┆ 0x3840…3860 6e 20 56 65 72 74 69 63 61 6c 20 41 6e 67 6c 65 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 ┆n Vertical Angle ┆ 0x3860…3880 54 68 65 20 76 65 72 74 69 63 61 6c 20 61 6e 67 6c 65 20 6f 66 20 74 68 65 20 64 69 73 70 6c 61 ┆The vertical angle of the displa┆ 0x3880…38a0 79 20 73 63 72 65 65 6e 20 63 61 6e 20 62 65 20 61 64 80 0a 19 8b 80 80 6a 75 73 74 65 64 20 62 ┆y screen can be ad justed b┆ 0x38a0…38c0 79 20 70 75 73 68 69 6e 67 20 28 70 75 6c 6c 69 6e 67 29 20 74 68 65 20 64 69 73 70 6c 61 79 20 ┆y pushing (pulling) the display ┆ 0x38c0…38e0 73 63 72 65 65 6e 20 68 6f 75 73 69 6e 67 20 0a 19 8b 80 80 64 6f 77 6e 20 28 75 70 29 20 61 74 ┆screen housing down (up) at┆ 0x38e0…3900 20 74 68 65 20 62 61 63 6b 2e 0d 0a 0d 0a 8c 83 d0 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 ┆ the back. . ┆ 0x3900…3920 44 69 73 70 6c 61 79 20 53 63 72 65 65 6e 20 48 65 69 67 68 74 0d 0a 0d 0a 20 20 20 20 20 20 20 ┆Display Screen Height ┆ 0x3920…3940 20 20 20 20 84 4f 6e 20 74 68 65 20 62 61 73 65 20 6f 66 20 74 68 65 20 64 69 73 70 6c 61 79 20 ┆ On the base of the display ┆ 0x3940…3960 75 6e 69 74 2c 20 6f 6e 20 74 68 65 20 72 69 67 68 74 20 61 6e 64 20 0a 19 8b 80 80 74 6f 77 61 ┆unit, on the right and towa┆ 0x3960…3980 72 64 20 74 68 65 20 66 72 6f 6e 74 2c 20 61 72 65 20 74 77 6f 20 62 75 74 74 6f 6e 73 20 6d 61 ┆rd the front, are two buttons ma┆ 0x3980…39a0 72 6b 65 64 20 62 79 20 61 72 72 6f 77 73 2e 20 0a 19 8b 80 80 57 69 74 68 20 70 6f 77 65 72 20 ┆rked by arrows. With power ┆ 0x39a0…39c0 61 70 70 6c 69 65 64 20 74 6f 20 74 68 65 20 52 43 38 35 35 20 28 32 2e 33 2e 31 29 2c 20 74 68 ┆applied to the RC855 (2.3.1), th┆ 0x39c0…39e0 65 20 64 69 73 70 6c 61 79 20 0a 19 8b 80 80 73 63 72 65 65 6e 20 68 6f 75 73 69 6e 67 20 63 61 ┆e display screen housing ca┆ 0x39e0…3a00 6e 20 62 65 20 72 61 69 73 65 64 20 28 6c 6f 77 65 72 65 64 29 20 72 65 6c 61 74 69 76 65 20 74 ┆n be raised (lowered) relative t┆ 0x3a00…3a20 (29,) 6f 20 74 68 65 20 0a 19 8b 80 80 62 61 73 65 20 62 79 20 68 6f 6c 64 69 6e 67 20 74 68 65 20 62 ┆o the base by holding the b┆ 0x3a20…3a40 75 74 74 6f 6e 20 6d 61 72 6b 65 64 20 62 79 20 74 68 65 20 75 70 20 28 64 6f 77 6e 29 20 0a 19 ┆utton marked by the up (down) ┆ 0x3a40…3a60 8b 80 80 61 72 72 6f 77 20 64 65 70 72 65 73 73 65 64 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 ┆ arrow depressed. ┆ 0x3a60…3a80 2e 20 a1 e1 b0 50 69 63 74 75 72 65 20 42 72 69 67 68 74 6e 65 73 73 20 61 6e 64 20 43 6f 6e 74 ┆. Picture Brightness and Cont┆ 0x3a80…3aa0 72 61 73 74 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 55 6e 64 65 72 20 74 68 65 20 64 69 ┆rast Under the di┆ 0x3aa0…3ac0 73 70 6c 61 79 20 73 63 72 65 65 6e 20 68 6f 75 73 69 6e 67 2c 20 61 74 20 74 68 65 20 66 72 6f ┆splay screen housing, at the fro┆ 0x3ac0…3ae0 6e 74 20 61 6e 64 20 6f 6e 20 0a 19 8b 80 80 74 68 65 20 72 69 67 68 74 2c 20 61 72 65 20 74 77 ┆nt and on the right, are tw┆ 0x3ae0…3b00 6f 20 6b 6e 75 72 6c 65 64 20 77 68 65 65 6c 73 2e 20 57 69 74 68 20 70 6f 77 65 72 20 61 70 70 ┆o knurled wheels. With power app┆ 0x3b00…3b20 6c 69 65 64 20 0a 19 8b 80 80 74 6f 20 74 68 65 20 52 43 38 35 35 20 28 32 2e 33 2e 31 29 2c 20 ┆lied to the RC855 (2.3.1), ┆ 0x3b20…3b40 74 68 65 20 77 68 65 65 6c 20 74 6f 20 74 68 65 20 72 69 67 68 74 20 73 68 6f 75 6c 64 20 62 65 ┆the wheel to the right should be┆ 0x3b40…3b60 20 0a 19 8b 80 80 74 75 72 6e 65 64 20 75 6e 74 69 6c 20 74 68 65 20 70 69 63 74 75 72 65 20 62 ┆ turned until the picture b┆ 0x3b60…3b80 72 69 67 68 74 6e 65 73 73 20 6f 66 20 74 68 65 20 64 69 73 70 6c 61 79 20 0a 19 8b 80 80 73 63 ┆rightness of the display sc┆ 0x3b80…3ba0 72 65 65 6e 20 69 73 20 73 61 74 69 73 66 61 63 74 6f 72 79 2e 20 54 68 65 6e 20 74 68 65 20 77 ┆reen is satisfactory. Then the w┆ 0x3ba0…3bc0 68 65 65 6c 20 74 6f 20 74 68 65 20 6c 65 66 74 20 0a 19 8b 80 80 73 68 6f 75 6c 64 20 62 65 20 ┆heel to the left should be ┆ 0x3bc0…3be0 74 75 72 6e 65 64 20 75 6e 74 69 6c 20 74 68 65 20 70 69 63 74 75 72 65 20 63 6f 6e 74 72 61 73 ┆turned until the picture contras┆ 0x3be0…3c00 74 20 69 73 20 73 61 74 69 73 80 0a 19 8b 80 80 66 61 74 6f 72 79 2e 20 54 68 65 20 63 75 72 72 ┆t is satis fatory. The curr┆ 0x3c00…3c20 (30,) 65 6e 74 20 70 69 63 74 75 72 65 20 73 68 6f 75 6c 64 20 62 65 20 75 73 65 64 20 61 73 20 61 20 ┆ent picture should be used as a ┆ 0x3c20…3c40 67 75 69 64 65 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 4e 6f 74 65 20 74 68 61 74 20 ┆guide. Note that ┆ 0x3c40…3c60 65 78 74 72 65 6d 65 20 62 72 69 67 68 74 6e 65 73 73 20 77 69 6c 6c 20 73 68 6f 72 74 65 6e 20 ┆extreme brightness will shorten ┆ 0x3c60…3c80 74 68 65 20 6c 69 66 65 20 6f 66 20 0a 19 8b 80 80 74 68 65 20 64 69 73 70 6c 61 79 20 73 63 72 ┆the life of the display scr┆ 0x3c80…3ca0 65 65 6e 2c 20 61 6e 64 20 6d 61 79 20 61 6c 73 6f 20 6c 65 61 64 20 74 6f 20 68 65 61 64 61 63 ┆een, and may also lead to headac┆ 0x3ca0…3cc0 68 65 20 61 6e 64 20 0a 19 8b 80 80 65 79 65 20 69 72 72 69 74 61 74 69 6f 6e 2e 20 54 68 65 20 ┆he and eye irritation. The ┆ 0x3cc0…3ce0 62 72 69 67 68 74 6e 65 73 73 20 61 6e 64 20 63 6f 6e 74 72 61 73 74 20 6f 66 20 74 68 65 20 0a ┆brightness and contrast of the ┆ 0x3ce0…3d00 19 8b 80 80 70 69 63 74 75 72 65 20 73 68 6f 75 6c 64 20 62 65 20 61 64 6a 75 73 74 65 64 20 61 ┆ picture should be adjusted a┆ 0x3d00…3d20 73 20 74 68 65 20 6c 69 67 68 74 20 69 6e 20 74 68 65 20 72 6f 6f 6d 20 0a 19 8b 80 80 63 68 61 ┆s the light in the room cha┆ 0x3d20…3d40 6e 67 65 73 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 50 69 63 74 75 72 65 20 54 ┆nges. . Picture T┆ 0x3d40…3d60 69 6d 65 6f 75 74 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 45 78 74 72 65 6d 65 20 62 72 ┆imeout Extreme br┆ 0x3d60…3d80 69 67 68 74 6e 65 73 73 20 6d 61 79 20 69 6e 20 74 69 6d 65 20 63 61 75 73 65 20 74 68 65 20 6c ┆ightness may in time cause the l┆ 0x3d80…3da0 61 79 65 72 20 6f 66 20 0a 19 8b 80 80 70 68 6f 73 70 68 6f 72 75 73 20 6f 6e 20 74 68 65 20 64 ┆ayer of phosphorus on the d┆ 0x3da0…3dc0 69 73 70 6c 61 79 20 73 63 72 65 65 6e 20 74 6f 20 62 75 72 6e 20 74 68 72 6f 75 67 68 2c 20 0a ┆isplay screen to burn through, ┆ 0x3dc0…3de0 19 8b 80 80 75 73 75 61 6c 6c 79 20 69 6e 20 69 6e 74 65 6e 73 69 66 69 65 64 20 64 69 73 70 6c ┆ usually in intensified displ┆ 0x3de0…3e00 61 79 20 66 69 65 6c 64 73 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 53 69 6e 63 65 20 ┆ay fields. Since ┆ 0x3e00…3e20 (31,) 69 6e 74 65 6e 73 69 66 69 65 64 20 64 69 73 70 6c 61 79 20 66 69 65 6c 64 73 20 61 72 65 20 63 ┆intensified display fields are c┆ 0x3e20…3e40 6f 6d 6d 6f 6e 20 69 6e 20 28 33 32 37 30 20 0a 19 8b 80 80 6f 72 69 65 6e 74 65 64 29 20 61 70 ┆ommon in (3270 oriented) ap┆ 0x3e40…3e60 70 6c 69 63 61 74 69 6f 6e 73 20 74 68 61 74 20 65 6d 70 6c 6f 79 20 66 6f 72 6d 61 74 74 65 64 ┆plications that employ formatted┆ 0x3e60…3e80 20 64 69 73 70 6c 61 79 20 0a 19 8b 80 80 73 63 72 65 65 6e 73 2c 20 74 68 65 20 52 43 38 35 35 ┆ display screens, the RC855┆ 0x3e80…3ea0 20 49 42 4d 20 33 32 37 30 20 42 53 43 20 65 6d 75 6c 61 74 6f 72 20 69 6e 63 6c 75 64 65 73 20 ┆ IBM 3270 BSC emulator includes ┆ 0x3ea0…3ec0 61 6e 20 0a 19 8b 80 80 61 75 74 6f 6d 61 74 69 63 20 70 69 63 74 75 72 65 20 74 69 6d 65 6f 75 ┆an automatic picture timeou┆ 0x3ec0…3ee0 74 20 66 65 61 74 75 72 65 2e 20 54 68 65 20 75 73 65 20 6f 66 20 74 68 69 73 20 0a 19 8b 80 80 ┆t feature. The use of this ┆ 0x3ee0…3f00 66 65 61 74 75 72 65 20 69 73 20 64 65 66 69 6e 65 64 20 62 79 20 61 6e 20 4e 56 4d 20 70 61 72 ┆feature is defined by an NVM par┆ 0x3f00…3f20 61 6d 65 74 65 72 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 43 75 72 73 6f 72 20 ┆ameter. . Cursor ┆ 0x3f20…3f40 46 6f 72 6d 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 54 68 65 20 63 75 72 73 6f 72 20 6d ┆Form The cursor m┆ 0x3f40…3f60 61 79 20 74 61 6b 65 20 61 6e 79 20 6f 66 20 66 6f 75 72 20 64 69 66 66 65 72 65 6e 74 20 66 6f ┆ay take any of four different fo┆ 0x3f60…3f80 72 6d 73 20 6f 6e 20 74 68 65 20 0a 19 8b 80 80 64 69 73 70 6c 61 79 20 73 63 72 65 65 6e 2c 20 ┆rms on the display screen, ┆ 0x3f80…3fa0 61 73 20 64 65 66 69 6e 65 64 20 62 79 20 61 6e 20 4e 56 4d 20 70 61 72 61 6d 65 74 65 72 2e 0d ┆as defined by an NVM parameter. ┆ 0x3fa0…3fc0 0a 0d 0a 0d 0a a1 b0 32 2e 31 2e 32 20 20 20 20 42 61 63 6b 20 50 61 6e 65 6c 0d 0a 0d 0a 20 20 ┆ 2.1.2 Back Panel ┆ 0x3fc0…3fe0 20 20 20 20 20 20 20 84 46 69 67 75 72 65 20 32 20 73 68 6f 77 73 20 74 68 65 20 62 61 63 6b 20 ┆ Figure 2 shows the back ┆ 0x3fe0…4000 70 61 6e 65 6c 20 6f 66 20 74 68 65 20 62 61 73 65 20 6f 66 20 74 68 65 20 64 69 73 70 6c 61 79 ┆panel of the base of the display┆ 0x4000…4020 (32,) 20 0a 19 89 80 80 75 6e 69 74 2e 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d ┆ unit. ┆ 0x4020…4040 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 46 69 67 2e 20 32 2e 20 52 43 38 ┆ Fig. 2. RC8┆ 0x4040…4060 35 35 20 54 65 72 6d 69 6e 61 6c 2c 20 44 69 73 70 6c 61 79 20 55 6e 69 74 20 42 61 63 6b 20 50 ┆55 Terminal, Display Unit Back P┆ 0x4060…406b 61 6e 65 6c 2e 0d 0a 0d 0a 0d 0a ┆anel. ┆ 0x406b…406e FormFeed { 0x406b…406e 0c 84 88 ┆ ┆ 0x406b…406e } 0x406e…4080 0a a1 b0 32 2e 31 2e 32 2e 31 20 20 43 61 62 6c 65 20 ┆ 2.1.2.1 Cable ┆ 0x4080…40a0 43 6f 6e 6e 65 63 74 6f 72 73 20 61 6e 64 20 4f 70 65 72 61 74 69 6e 67 20 43 6f 6e 74 72 6f 6c ┆Connectors and Operating Control┆ 0x40a0…40c0 73 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 4c 61 62 65 6c e1 20 20 20 20 20 20 20 20 20 20 ┆s Label ┆ 0x40c0…40e0 20 20 20 20 20 20 a1 44 65 73 63 72 69 70 74 69 6f 6e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 4b ┆ Description K┆ 0x40e0…4100 45 59 42 4f 41 52 44 20 20 20 20 20 20 20 20 20 20 20 20 20 63 6f 6e 6e 65 63 74 6f 72 20 66 6f ┆EYBOARD connector fo┆ 0x4100…4120 72 20 63 61 62 6c 65 20 74 6f 20 6b 65 79 62 6f 61 72 64 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 ┆r cable to keyboard ┆ 0x4120…4140 52 45 53 45 54 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 72 65 73 65 74 20 62 75 74 74 6f ┆RESET reset butto┆ 0x4140…4160 6e 20 28 32 2e 33 2e 32 29 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 43 49 52 43 55 49 54 20 20 20 ┆n (2.3.2) CIRCUIT ┆ 0x4160…4180 20 20 20 20 20 20 20 20 20 20 20 84 63 6f 6e 6e 65 63 74 6f 72 20 66 6f 72 20 63 61 62 6c 65 20 ┆ connector for cable ┆ 0x4180…41a0 74 6f 20 52 63 43 69 72 63 75 69 74 20 0a 19 9e 80 80 28 6c 6f 63 61 6c 20 74 65 72 6d 69 6e 61 ┆to RcCircuit (local termina┆ 0x41a0…41c0 6c 20 6e 65 74 77 6f 72 6b 29 20 70 6c 75 67 20 0a 19 9e 80 80 6f 75 74 6c 65 74 0d 0a 0d 0a 20 ┆l network) plug outlet ┆ 0x41c0…41e0 20 20 20 20 20 20 20 20 4c 49 4e 45 20 49 49 20 28 50 52 49 4e 54 45 52 29 20 20 20 20 84 63 6f ┆ LINE II (PRINTER) co┆ 0x41e0…4200 6e 6e 65 63 74 6f 72 20 66 6f 72 20 63 61 62 6c 65 20 74 6f 20 70 72 69 6e 74 65 72 20 0a 19 9e ┆nnector for cable to printer ┆ 0x4200…4220 (33,) 80 80 28 32 2e 31 2e 32 2e 33 20 29 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 4c 49 4e 45 20 49 20 ┆ (2.1.2.3 ) LINE I ┆ 0x4220…4240 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 63 6f 6e 6e 65 63 74 6f 72 20 66 6f 72 20 63 61 62 ┆ connector for cab┆ 0x4240…4260 6c 65 20 74 6f 20 68 6f 73 74 20 63 6f 6d 70 75 80 0a 19 9e 80 80 74 65 72 20 73 79 73 74 65 6d ┆le to host compu ter system┆ 0x4260…4280 2c 20 6d 6f 64 65 6d 2c 20 52 43 38 30 30 2d 31 39 20 6d 6f 64 65 6d 20 0a 19 9e 80 80 6d 75 6c ┆, modem, RC800-19 modem mul┆ 0x4280…42a0 74 69 70 6c 65 78 65 72 2c 20 6f 72 20 44 43 45 20 28 64 61 74 61 20 63 69 72 63 75 69 74 80 2d ┆tiplexer, or DCE (data circuit -┆ 0x42a0…42c0 0a 19 9e 80 80 74 65 72 6d 69 6e 61 74 69 6e 67 20 65 71 75 69 70 6d 65 6e 74 29 0d 0a 0d 0a 20 ┆ terminating equipment) ┆ 0x42c0…42e0 20 20 20 20 20 20 20 20 44 49 53 4b 45 54 54 45 20 49 2f 4f 20 20 20 20 20 20 20 20 20 84 63 6f ┆ DISKETTE I/O co┆ 0x42e0…4300 6e 6e 65 63 74 6f 72 20 66 6f 72 20 63 61 62 6c 65 20 74 6f 20 64 69 73 6b 20 73 79 73 74 65 6d ┆nnector for cable to disk system┆ 0x4300…4320 0a 19 9e 80 80 20 28 32 2e 31 2e 32 2e 32 29 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 31 41 20 53 ┆ (2.1.2.2) 1A S┆ 0x4320…4340 42 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 63 6f 6e 6e 65 63 74 6f 72 20 66 6f 72 20 ┆B connector for ┆ 0x4340…4360 70 6f 77 65 72 20 63 61 62 6c 65 2c 20 77 69 74 68 20 0a 19 9e 80 80 66 75 73 65 20 28 32 2e 33 ┆power cable, with fuse (2.3┆ 0x4360…4380 2e 31 29 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 4f 4e 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆.1) ON ┆ 0x4380…43a0 20 20 20 20 20 84 70 6f 77 65 72 20 73 77 69 74 63 68 20 28 32 2e 33 2e 31 29 0d 0a 0d 0a 20 20 ┆ power switch (2.3.1) ┆ 0x43a0…43c0 20 20 20 20 20 20 20 84 46 6f 72 20 61 20 64 65 74 61 69 6c 65 64 20 64 65 73 63 72 69 70 74 69 ┆ For a detailed descripti┆ 0x43c0…43e0 6f 6e 20 6f 66 20 74 68 65 20 62 61 63 6b 20 70 61 6e 65 6c 20 6f 66 20 74 68 65 20 0a 19 89 80 ┆on of the back panel of the ┆ 0x43e0…4400 80 64 69 73 70 6c 61 79 20 75 6e 69 74 2c 20 73 65 65 20 28 32 29 2e 0d 0a 0d 0a 0d 0a a1 b0 32 ┆ display unit, see (2). 2┆ 0x4400…4420 (34,) 2e 31 2e 32 2e 32 20 20 44 69 73 6b 20 53 79 73 74 65 6d 20 4f 70 74 69 6f 6e 0d 0a 0d 0a 20 20 ┆.1.2.2 Disk System Option ┆ 0x4420…4440 20 20 20 20 20 20 20 84 41 20 64 69 73 6b 20 73 79 73 74 65 6d 20 6d 61 79 20 62 65 20 63 6f 6e ┆ A disk system may be con┆ 0x4440…4460 6e 65 63 74 65 64 20 74 6f 20 74 68 65 20 64 69 73 70 6c 61 79 20 75 6e 69 74 20 61 73 20 0a 19 ┆nected to the display unit as ┆ 0x4460…4480 89 80 80 72 65 71 75 69 72 65 64 2e 20 54 68 65 20 73 79 73 74 65 6d 20 6d 61 79 20 63 6f 6d 70 ┆ required. The system may comp┆ 0x4480…44a0 72 69 73 65 20 61 74 20 6d 6f 73 74 20 74 77 6f 20 64 69 73 6b 65 74 74 65 20 0a 19 89 80 80 64 ┆rise at most two diskette d┆ 0x44a0…44c0 72 69 76 65 73 20 6f 66 20 74 68 65 20 73 61 6d 65 20 74 79 70 65 2c 20 69 2e 65 2e 20 35 20 31 ┆rives of the same type, i.e. 5 1┆ 0x44c0…44e0 2f 34 20 69 6e 63 68 20 6f 72 20 38 20 69 6e 63 68 2c 20 61 6e 64 20 0a 19 89 80 80 6f 6e 65 20 ┆/4 inch or 8 inch, and one ┆ 0x44e0…4500 68 61 72 64 20 64 69 73 6b 20 64 72 69 76 65 2e 20 49 6e 20 61 20 63 6f 6d 62 69 6e 61 74 69 6f ┆hard disk drive. In a combinatio┆ 0x4500…4520 6e 20 6f 66 20 64 69 73 6b 65 74 74 65 20 61 6e 64 20 0a 19 89 80 80 68 61 72 64 20 64 69 73 6b ┆n of diskette and hard disk┆ 0x4520…4540 20 64 72 69 76 65 73 2c 20 74 68 65 20 66 6f 72 6d 65 72 20 61 72 65 20 63 6f 6e 6e 65 63 74 65 ┆ drives, the former are connecte┆ 0x4540…4560 64 20 74 68 72 6f 75 67 68 20 74 68 65 20 0a 19 89 80 80 6c 61 74 74 65 72 2e 0d 0a 0d 0a 20 20 ┆d through the latter. ┆ 0x4560…4580 20 20 20 20 20 20 20 84 41 20 64 69 73 6b 20 73 79 73 74 65 6d 20 6d 75 73 74 20 62 65 20 63 6f ┆ A disk system must be co┆ 0x4580…45a0 6e 6e 65 63 74 65 64 20 74 6f 20 61 20 70 6f 77 65 72 20 73 6f 75 72 63 65 20 61 6e 64 20 0a 19 ┆nnected to a power source and ┆ 0x45a0…45c0 89 80 80 70 6f 77 65 72 65 64 20 6f 6e 20 62 65 66 6f 72 65 20 69 74 20 63 61 6e 20 62 65 20 75 ┆ powered on before it can be u┆ 0x45c0…45e0 73 65 64 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 53 65 76 65 72 61 6c 20 64 69 66 66 65 72 ┆sed. Several differ┆ 0x45e0…4600 65 6e 74 20 64 72 69 76 65 73 20 61 72 65 20 75 73 65 64 20 69 6e 20 74 68 65 20 64 69 73 6b 20 ┆ent drives are used in the disk ┆ 0x4600…4620 (35,) 73 79 73 74 65 6d 73 2e 20 0a 19 89 80 80 4f 66 20 74 68 65 20 76 61 72 69 6f 75 73 20 6c 61 6d ┆systems. Of the various lam┆ 0x4620…4640 70 73 20 6f 6e 20 74 68 65 73 65 20 64 72 69 76 65 73 2c 20 74 68 65 20 6d 6f 73 74 20 69 6d 70 ┆ps on these drives, the most imp┆ 0x4640…4660 6f 72 74 61 6e 74 20 0a 19 89 80 80 69 73 20 74 68 65 20 6c 61 6d 70 20 74 68 61 74 20 74 65 6c ┆ortant is the lamp that tel┆ 0x4660…4680 6c 73 20 77 68 65 6e 20 74 68 65 20 64 72 69 76 65 20 69 73 20 73 65 6c 65 63 74 65 64 20 66 6f ┆ls when the drive is selected fo┆ 0x4680…46a0 72 20 0a 19 89 80 80 72 65 61 64 69 6e 67 20 6f 72 20 77 72 69 74 69 6e 67 20 6f 6e 20 74 68 65 ┆r reading or writing on the┆ 0x46a0…46c0 20 64 69 73 6b 20 6f 72 20 64 69 73 6b 65 74 74 65 2e 20 54 68 65 20 64 69 73 6b 20 69 6e 20 0a ┆ disk or diskette. The disk in ┆ 0x46c0…46e0 19 89 80 80 61 20 68 61 72 64 20 64 69 73 6b 20 64 72 69 76 65 20 69 73 20 70 65 72 6d 61 6e 65 ┆ a hard disk drive is permane┆ 0x46e0…4700 6e 74 6c 79 20 6d 6f 75 6e 74 65 64 20 69 6e 20 74 68 65 20 6c 61 74 74 65 72 2e 20 0a 19 89 80 ┆ntly mounted in the latter. ┆ 0x4700…4720 80 44 69 73 6b 65 74 74 65 73 2c 20 6f 6e 20 74 68 65 20 6f 74 68 65 72 20 68 61 6e 64 2c 20 61 ┆ Diskettes, on the other hand, a┆ 0x4720…4740 72 65 20 69 6e 73 65 72 74 65 64 20 69 6e 20 61 6e 64 20 72 65 6d 6f 80 0a 19 89 80 80 76 65 64 ┆re inserted in and remo ved┆ 0x4740…4760 20 66 72 6f 6d 20 74 68 65 20 64 69 73 6b 65 74 74 65 20 64 72 69 76 65 20 62 79 20 74 68 65 20 ┆ from the diskette drive by the ┆ 0x4760…4780 6f 70 65 72 61 74 6f 72 2e 20 54 68 65 20 22 73 65 80 0a 19 89 80 80 6c 65 63 74 22 20 6c 61 6d ┆operator. The "se lect" lam┆ 0x4780…47a0 70 20 69 73 20 69 6d 70 6f 72 74 61 6e 74 2c 20 62 65 63 61 75 73 65 20 64 69 73 6b 65 74 74 65 ┆p is important, because diskette┆ 0x47a0…47c0 73 20 6d 75 73 74 20 6e 65 76 65 72 20 62 65 20 0a 19 89 80 80 72 65 6d 6f 76 65 64 20 6f 72 20 ┆s must never be removed or ┆ 0x47c0…47e0 69 6e 73 65 72 74 65 64 20 77 68 69 6c 65 20 74 68 69 73 20 6c 61 6d 70 20 69 73 20 6c 69 74 2e ┆inserted while this lamp is lit.┆ 0x47e0…4800 0d 0a 0d 0a 8c 83 b0 0a 20 20 20 20 20 20 20 20 20 84 57 68 65 6e 20 61 20 64 69 73 6b 65 74 74 ┆ When a diskett┆ 0x4800…4820 (36,) 65 20 69 73 20 69 6e 73 65 72 74 65 64 20 69 6e 20 61 20 64 69 73 6b 65 74 74 65 20 64 72 69 76 ┆e is inserted in a diskette driv┆ 0x4820…4840 65 2c 20 74 68 65 20 0a 19 89 80 80 6c 61 62 65 6c 20 6f 6e 20 74 68 65 20 63 6f 76 65 72 20 6f ┆e, the label on the cover o┆ 0x4840…4860 66 20 74 68 65 20 64 69 73 6b 65 74 74 65 20 6d 75 73 74 20 66 61 63 65 20 75 70 20 61 6e 64 20 ┆f the diskette must face up and ┆ 0x4860…4880 61 77 61 79 20 0a 19 89 80 80 66 72 6f 6d 20 74 68 65 20 64 72 69 76 65 2e 20 54 68 65 20 64 69 ┆away from the drive. The di┆ 0x4880…48a0 73 6b 65 74 74 65 20 69 73 20 69 6e 73 65 72 74 65 64 20 62 79 20 70 75 73 68 69 6e 67 20 69 74 ┆skette is inserted by pushing it┆ 0x48a0…48c0 20 0a 19 89 80 80 67 65 6e 74 6c 79 20 69 6e 74 6f 20 74 68 65 20 64 72 69 76 65 20 73 6c 6f 74 ┆ gently into the drive slot┆ 0x48c0…48e0 20 75 6e 74 69 6c 20 69 74 20 69 73 20 73 65 61 74 65 64 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 ┆ until it is seated. ┆ 0x48e0…4900 20 84 54 68 65 20 64 72 69 76 65 20 73 6c 6f 74 73 20 6f 66 20 74 68 65 20 64 69 66 66 65 72 65 ┆ The drive slots of the differe┆ 0x4900…4920 6e 74 20 64 69 73 6b 65 74 74 65 20 64 72 69 76 65 73 20 69 6e 20 74 68 65 20 0a 19 89 80 80 64 ┆nt diskette drives in the d┆ 0x4920…4940 69 73 6b 20 73 79 73 74 65 6d 20 61 72 65 20 22 6f 70 65 6e 65 64 22 20 61 6e 64 20 22 63 6c 6f ┆isk system are "opened" and "clo┆ 0x4940…4960 73 65 64 22 20 69 6e 20 76 61 72 69 6f 75 73 20 77 61 79 73 2c 20 0a 19 89 80 80 65 2e 67 2e 20 ┆sed" in various ways, e.g. ┆ 0x4960…4980 62 79 20 6d 65 61 6e 73 20 6f 66 20 61 20 6c 69 64 20 6f 72 20 6c 61 74 63 68 2e 20 54 68 65 20 ┆by means of a lid or latch. The ┆ 0x4980…49a0 73 6c 6f 74 20 6d 75 73 74 20 62 65 20 63 6c 6f 73 65 64 20 0a 19 89 80 80 69 6e 20 6f 72 64 65 ┆slot must be closed in orde┆ 0x49a0…49c0 72 20 74 6f 20 72 65 61 64 20 6f 72 20 77 72 69 74 65 20 6f 6e 20 74 68 65 20 69 6e 73 65 72 74 ┆r to read or write on the insert┆ 0x49c0…49e0 65 64 20 64 69 73 6b 65 74 74 65 2e 20 57 68 65 6e 20 0a 19 89 80 80 74 68 65 20 73 6c 6f 74 20 ┆ed diskette. When the slot ┆ 0x49e0…4a00 69 73 20 6f 70 65 6e 65 64 20 61 67 61 69 6e 2c 20 74 68 65 20 69 6e 73 65 72 74 65 64 20 64 69 ┆is opened again, the inserted di┆ 0x4a00…4a20 (37,) 73 6b 65 74 74 65 20 69 73 20 0a 19 89 80 80 75 6e 73 65 61 74 65 64 2c 20 73 6f 20 74 68 61 74 ┆skette is unseated, so that┆ 0x4a20…4a40 20 69 74 20 63 61 6e 20 62 65 20 72 65 6d 6f 76 65 64 20 66 72 6f 6d 20 74 68 65 20 64 72 69 76 ┆ it can be removed from the driv┆ 0x4a40…4a60 65 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 57 72 69 74 65 2d 70 72 6f 74 65 63 74 69 6f 6e ┆e. Write-protection┆ 0x4a60…4a80 20 6f 66 20 64 69 73 6b 65 74 74 65 73 20 69 73 20 64 65 73 63 72 69 62 65 64 20 74 6f 67 65 74 ┆ of diskettes is described toget┆ 0x4a80…4aa0 68 65 72 20 77 69 74 68 20 0a 19 89 80 80 74 68 65 20 63 61 72 65 20 6f 66 20 64 69 73 6b 65 74 ┆her with the care of disket┆ 0x4aa0…4ac0 74 65 73 20 69 6e 20 43 68 61 70 74 65 72 20 34 2e 0d 0a 0d 0a 0d 0a a1 b0 32 2e 31 2e 32 2e 33 ┆tes in Chapter 4. 2.1.2.3┆ 0x4ac0…4ae0 20 20 50 72 69 6e 74 65 72 20 4f 70 74 69 6f 6e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 41 20 ┆ Printer Option A ┆ 0x4ae0…4b00 70 72 69 6e 74 65 72 20 6d 61 79 20 62 65 20 63 6f 6e 6e 65 63 74 65 64 20 74 6f 20 74 68 65 20 ┆printer may be connected to the ┆ 0x4b00…4b20 64 69 73 70 6c 61 79 20 75 6e 69 74 20 61 73 20 72 65 80 0a 19 89 80 80 71 75 69 72 65 64 2e 20 ┆display unit as re quired. ┆ 0x4b20…4b40 53 65 76 65 72 61 6c 20 64 69 66 66 65 72 65 6e 74 20 70 72 69 6e 74 65 72 73 20 61 72 65 20 61 ┆Several different printers are a┆ 0x4b40…4b60 76 61 69 6c 61 62 6c 65 2e 20 50 72 69 6e 80 74 2d 0a 19 89 80 80 65 72 20 6f 70 65 72 61 74 69 ┆vailable. Prin t- er operati┆ 0x4b60…4b80 6f 6e 20 69 73 20 64 65 73 63 72 69 62 65 64 20 69 6e 20 74 68 65 20 6f 70 65 72 61 74 69 6e 67 ┆on is described in the operating┆ 0x4b80…4ba0 20 67 75 69 64 65 20 61 63 63 6f 6d 80 0a 19 89 80 80 70 61 6e 79 69 6e 67 20 74 68 65 20 70 72 ┆ guide accom panying the pr┆ 0x4ba0…4bc0 69 6e 74 65 72 20 69 6e 20 71 75 65 73 74 69 6f 6e 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 ┆inter in question. ┆ 0x4bc0…4be0 41 20 70 72 69 6e 74 65 72 20 6d 75 73 74 20 62 65 20 63 6f 6e 6e 65 63 74 65 64 20 74 6f 20 61 ┆A printer must be connected to a┆ 0x4be0…4c00 20 70 6f 77 65 72 20 73 6f 75 72 63 65 20 61 6e 64 20 70 6f 80 0a 19 89 80 80 77 65 72 65 64 20 ┆ power source and po wered ┆ 0x4c00…4c20 (38,) 6f 6e 20 62 65 66 6f 72 65 20 69 74 20 63 61 6e 20 62 65 20 75 73 65 64 2e 0d 0a 0d 0a 20 20 20 ┆on before it can be used. ┆ 0x4c20…4c40 20 20 20 20 20 20 84 49 66 20 61 20 70 72 69 6e 74 65 72 20 69 73 20 63 6f 6e 6e 65 63 74 65 64 ┆ If a printer is connected┆ 0x4c40…4c60 20 74 6f 20 61 6e 20 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 2c 20 74 68 65 20 0a 19 89 80 80 ┆ to an RC855 terminal, the ┆ 0x4c60…4c80 76 61 6c 75 65 73 20 6f 66 20 63 65 72 74 61 69 6e 20 4e 56 4d 20 70 61 72 61 6d 65 74 65 72 73 ┆values of certain NVM parameters┆ 0x4c80…4ca0 20 6d 75 73 74 20 62 65 20 73 65 74 20 61 63 63 6f 72 64 69 6e 67 6c 79 20 0a 19 89 80 80 28 73 ┆ must be set accordingly (s┆ 0x4ca0…4cc0 65 65 2c 20 66 6f 72 20 65 78 61 6d 70 6c 65 2c 20 28 38 29 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 ┆ee, for example, (8)). ┆ 0x4cc0…4ce0 20 20 20 84 49 6e 20 73 6f 6d 65 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 20 ┆ In some application program ┆ 0x4ce0…4d00 73 79 73 74 65 6d 73 20 61 6e 64 20 74 65 72 6d 69 6e 61 6c 20 63 6c 75 73 80 0a 19 89 80 80 74 ┆systems and terminal clus t┆ 0x4d00…4d20 65 72 20 63 6f 6e 66 69 67 75 72 61 74 69 6f 6e 73 2c 20 61 20 70 72 69 6e 74 65 72 20 69 73 20 ┆er configurations, a printer is ┆ 0x4d20…4d40 61 76 61 69 6c 61 62 6c 65 20 61 73 20 61 20 63 6f 6d 6d 6f 6e 20 0a 19 89 80 80 72 65 73 6f 75 ┆available as a common resou┆ 0x4d40…4d60 72 63 65 20 77 69 74 68 69 6e 20 74 68 65 20 63 6c 75 73 74 65 72 2c 20 69 2e 65 2e 20 69 74 20 ┆rce within the cluster, i.e. it ┆ 0x4d60…4d80 6d 61 79 20 62 65 20 75 73 65 64 20 62 79 20 6d 6f 72 65 20 0a 19 89 80 80 74 68 61 6e 20 6f 6e ┆may be used by more than on┆ 0x4d80…4da0 65 20 74 65 72 6d 69 6e 61 6c 2e 20 54 68 65 20 52 43 38 35 35 20 6f 70 65 72 61 74 6f 72 20 73 ┆e terminal. The RC855 operator s┆ 0x4da0…4dc0 68 6f 75 6c 64 20 69 6e 76 65 73 74 69 67 61 74 65 20 0a 19 89 80 80 73 75 63 68 20 6d 61 74 74 ┆hould investigate such matt┆ 0x4dc0…4de0 65 72 73 20 62 65 66 6f 72 65 20 70 72 6f 63 65 65 64 69 6e 67 20 74 6f 20 6f 70 65 72 61 74 65 ┆ers before proceeding to operate┆ 0x4de0…4e00 20 61 20 74 65 72 6d 69 6e 61 6c 20 77 69 74 68 20 0a 19 89 80 80 61 20 63 6f 6e 6e 65 63 74 65 ┆ a terminal with a connecte┆ 0x4e00…4e20 (39,) 64 20 70 72 69 6e 74 65 72 2e 0d 0a 0d 0a 0d 0a a1 b0 32 2e 32 20 20 20 20 20 20 4b 65 79 62 6f ┆d printer. 2.2 Keybo┆ 0x4e20…4e40 61 72 64 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 6b 65 79 62 6f 61 72 64 20 69 73 ┆ard The keyboard is┆ 0x4e40…4e60 20 63 6f 6e 6e 65 63 74 65 64 20 74 6f 20 74 68 65 20 64 69 73 70 6c 61 79 20 75 6e 69 74 20 62 ┆ connected to the display unit b┆ 0x4e60…4e80 79 20 6d 65 61 6e 73 20 0a 19 89 80 80 6f 66 20 61 20 63 6f 6d 62 69 6e 65 64 20 70 6f 77 65 72 ┆y means of a combined power┆ 0x4e80…4ea0 20 61 6e 64 20 73 69 67 6e 61 6c 20 63 61 62 6c 65 20 28 32 2e 31 2e 32 2e 31 29 2e 20 41 73 20 ┆ and signal cable (2.1.2.1). As ┆ 0x4ea0…4ec0 74 68 69 73 20 0a 19 89 80 80 63 61 62 6c 65 20 69 73 20 6f 6e 65 20 6d 65 74 65 72 20 69 6e 20 ┆this cable is one meter in ┆ 0x4ec0…4ee0 6c 65 6e 67 74 68 2c 20 74 68 65 20 6b 65 79 62 6f 61 72 64 20 63 61 6e 20 62 65 20 6d 6f 76 65 ┆length, the keyboard can be move┆ 0x4ee0…4f00 64 20 0a 19 89 80 80 61 62 6f 75 74 20 77 69 74 68 20 63 6f 6e 73 69 64 65 72 61 62 6c 65 20 66 ┆d about with considerable f┆ 0x4f00…4f20 72 65 65 64 6f 6d 2e 20 54 68 65 20 62 61 63 6b 20 70 61 6e 65 6c 20 6f 66 20 74 68 65 20 0a 19 ┆reedom. The back panel of the ┆ 0x4f20…4f40 89 80 80 6b 65 79 62 6f 61 72 64 20 63 6f 6e 74 61 69 6e 73 20 74 77 6f 20 6f 70 65 72 61 74 69 ┆ keyboard contains two operati┆ 0x4f40…4f60 6e 67 20 63 6f 6e 74 72 6f 6c 73 2e 20 54 68 65 20 6b 65 79 62 6f 61 72 64 20 0a 19 89 80 80 6d ┆ng controls. The keyboard m┆ 0x4f60…4f80 61 79 20 62 65 20 65 71 75 69 70 70 65 64 20 77 69 74 68 20 61 20 6c 6f 63 6b 69 6e 67 20 64 65 ┆ay be equipped with a locking de┆ 0x4f80…4fa0 76 69 63 65 20 6f 72 2c 20 61 6c 74 65 72 6e 61 74 69 76 65 6c 79 2c 20 0a 19 89 80 80 77 69 74 ┆vice or, alternatively, wit┆ 0x4fa0…4fc0 68 20 61 20 62 61 64 67 65 20 72 65 61 64 65 72 2e 20 54 68 65 20 6b 65 79 62 6f 61 72 64 20 69 ┆h a badge reader. The keyboard i┆ 0x4fc0…4fe0 73 20 61 76 61 69 6c 61 62 6c 65 20 69 6e 20 73 69 78 20 0a 19 89 80 80 28 6e 61 74 69 6f 6e 61 ┆s available in six (nationa┆ 0x4fe0…5000 6c 29 20 76 65 72 73 69 6f 6e 73 2e 0d 0a 0d 0a 0d 0a a1 b0 32 2e 32 2e 31 20 20 20 20 4f 70 65 ┆l) versions. 2.2.1 Ope┆ 0x5000…5020 (40,) 72 61 74 69 6e 67 20 46 65 61 74 75 72 65 73 20 61 6e 64 20 43 6f 6e 74 72 6f 6c 73 0d 0a 0d 0a ┆rating Features and Controls ┆ 0x5020…5040 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 4b 65 79 20 43 6c 69 63 6b 0d 0a 0d 0a 20 20 20 20 20 ┆ . Key Click ┆ 0x5040…5060 20 20 20 20 20 20 84 54 68 65 20 6b 65 79 62 6f 61 72 64 20 63 61 6e 20 65 6d 69 74 20 61 20 63 ┆ The keyboard can emit a c┆ 0x5060…5080 6c 69 63 6b 69 6e 67 20 73 6f 75 6e 64 20 74 6f 20 69 6e 64 69 63 61 74 65 20 0a 19 8b 80 80 74 ┆licking sound to indicate t┆ 0x5080…50a0 68 61 74 20 61 20 6b 65 79 20 68 61 73 20 62 65 65 6e 20 70 72 65 73 73 65 64 20 63 6f 72 72 65 ┆hat a key has been pressed corre┆ 0x50a0…50c0 63 74 6c 79 2e 20 54 68 69 73 20 66 65 61 74 75 72 65 20 69 73 20 0a 19 8b 80 80 65 6e 61 62 6c ┆ctly. This feature is enabl┆ 0x50c0…50e0 65 64 2f 64 69 73 61 62 6c 65 64 20 62 79 20 6d 65 61 6e 73 20 6f 66 20 74 68 65 20 73 77 69 74 ┆ed/disabled by means of the swit┆ 0x50e0…5100 63 68 20 6c 61 62 65 6c 65 64 20 43 4c 49 43 4b 20 0a 19 8b 80 80 4f 4e 2f 4f 46 46 20 6f 6e 20 ┆ch labeled CLICK ON/OFF on ┆ 0x5100…5120 74 68 65 20 62 61 63 6b 20 70 61 6e 65 6c 2e 0d 0a 0d 0a 8c 83 d8 0a 20 20 20 20 20 20 20 20 20 ┆the back panel. ┆ 0x5120…5140 2e 20 a1 e1 b0 41 6c 61 72 6d 20 42 65 65 70 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 54 ┆. Alarm Beep T┆ 0x5140…5160 68 65 20 6b 65 79 62 6f 61 72 64 20 65 6d 69 74 73 20 61 20 62 65 65 70 69 6e 67 20 73 6f 75 6e ┆he keyboard emits a beeping soun┆ 0x5160…5180 64 20 74 6f 20 69 6e 64 69 63 61 74 65 20 74 68 61 74 20 61 6e 20 0a 19 8b 80 80 69 6c 6c 65 67 ┆d to indicate that an illeg┆ 0x5180…51a0 61 6c 20 6f 70 65 72 61 74 69 6f 6e 20 68 61 73 20 62 65 65 6e 20 61 74 74 65 6d 70 74 65 64 2e ┆al operation has been attempted.┆ 0x51a0…51c0 20 54 68 65 20 61 6c 61 72 6d 20 62 65 65 70 20 0a 19 8b 80 80 6d 61 79 20 61 6c 73 6f 20 62 65 ┆ The alarm beep may also be┆ 0x51c0…51e0 20 73 6f 75 6e 64 65 64 20 6f 6e 20 74 68 65 20 69 6e 69 74 69 61 74 69 76 65 20 6f 66 20 61 6e ┆ sounded on the initiative of an┆ 0x51e0…5200 20 61 70 70 6c 69 63 61 80 0a 19 8b 80 80 74 69 6f 6e 20 70 72 6f 67 72 61 6d 20 72 75 6e 6e 69 ┆ applica tion program runni┆ 0x5200…5220 (41,) 6e 67 20 6f 6e 20 61 20 72 65 6d 6f 74 65 20 68 6f 73 74 20 63 6f 6d 70 75 74 65 72 2e 0d 0a 0d ┆ng on a remote host computer. ┆ 0x5220…5240 0a 20 20 20 20 20 20 20 20 20 20 20 84 54 68 65 20 61 6c 61 72 6d 20 62 65 65 70 20 63 61 6e 6e ┆ The alarm beep cann┆ 0x5240…5260 6f 74 20 62 65 20 64 69 73 61 62 6c 65 64 2c 20 62 75 74 20 74 68 65 20 76 6f 6c 75 6d 65 20 6f ┆ot be disabled, but the volume o┆ 0x5260…5280 66 20 0a 19 8b 80 80 74 68 65 20 62 65 65 70 20 65 6d 69 74 74 65 64 20 28 61 73 20 77 65 6c 6c ┆f the beep emitted (as well┆ 0x5280…52a0 20 61 73 20 74 68 61 74 20 6f 66 20 74 68 65 20 6b 65 79 20 63 6c 69 63 6b 29 20 0a 19 8b 80 80 ┆ as that of the key click) ┆ 0x52a0…52c0 63 61 6e 20 62 65 20 61 64 6a 75 73 74 65 64 20 62 79 20 6d 65 61 6e 73 20 6f 66 20 74 68 65 20 ┆can be adjusted by means of the ┆ 0x52c0…52e0 6b 6e 75 72 6c 65 64 20 77 68 65 65 6c 20 6c 61 62 65 6c 65 64 20 0a 19 8b 80 80 56 4f 4c 55 4d ┆knurled wheel labeled VOLUM┆ 0x52e0…5300 45 20 6f 6e 20 74 68 65 20 62 61 63 6b 20 70 61 6e 65 6c 2e 0d 0a 0d 0a 0d 0a a1 b0 32 2e 32 2e ┆E on the back panel. 2.2.┆ 0x5300…5320 32 20 20 20 20 4c 6f 63 6b 69 6e 67 20 44 65 76 69 63 65 20 4f 70 74 69 6f 6e 0d 0a 0d 0a 20 20 ┆2 Locking Device Option ┆ 0x5320…5340 20 20 20 20 20 20 20 84 54 68 65 20 6b 65 79 62 6f 61 72 64 20 6d 61 79 20 62 65 20 65 71 75 69 ┆ The keyboard may be equi┆ 0x5340…5360 70 70 65 64 20 77 69 74 68 20 61 20 6c 6f 63 6b 69 6e 67 20 64 65 76 69 63 65 20 61 73 20 61 20 ┆pped with a locking device as a ┆ 0x5360…5380 0a 19 8a 80 80 73 65 63 75 72 69 74 79 20 6d 65 61 73 75 72 65 2e 20 54 68 65 20 64 65 76 69 63 ┆ security measure. The devic┆ 0x5380…53a0 65 20 69 73 20 6f 70 65 72 61 74 65 64 20 62 79 20 69 6e 73 65 72 74 69 6e 67 20 61 20 0a 19 8a ┆e is operated by inserting a ┆ 0x53a0…53c0 80 80 6b 65 79 20 61 6e 64 20 74 75 72 6e 69 6e 67 20 69 74 20 69 6e 20 74 68 65 20 6c 6f 63 6b ┆ key and turning it in the lock┆ 0x53c0…53e0 2e 20 54 68 65 20 6b 65 79 20 63 61 6e 6e 6f 74 20 62 65 20 72 65 80 0a 19 8a 80 80 6d 6f 76 65 ┆. The key cannot be re move┆ 0x53e0…5400 64 20 66 72 6f 6d 20 74 68 65 20 6c 6f 63 6b 20 73 6f 20 6c 6f 6e 67 20 61 73 20 74 68 65 20 6b ┆d from the lock so long as the k┆ 0x5400…5420 (42,) 65 79 62 6f 61 72 64 20 69 73 20 61 63 74 69 76 65 2e 20 0a 19 8a 80 80 54 68 65 20 72 65 6d 6f ┆eyboard is active. The remo┆ 0x5420…5440 76 61 6c 20 6f 66 20 74 68 65 20 6b 65 79 20 68 61 73 20 74 68 65 20 73 61 6d 65 20 65 66 66 65 ┆val of the key has the same effe┆ 0x5440…5460 63 74 20 61 73 20 70 68 79 73 69 63 61 6c 20 0a 19 8a 80 80 64 69 73 63 6f 6e 6e 65 63 74 69 6f ┆ct as physical disconnectio┆ 0x5460…5480 6e 20 6f 66 20 74 68 65 20 6b 65 79 62 6f 61 72 64 2e 0d 0a 0d 0a 0d 0a a1 b0 32 2e 32 2e 33 20 ┆n of the keyboard. 2.2.3 ┆ 0x5480…54a0 20 20 20 42 61 64 67 65 20 52 65 61 64 65 72 20 4f 70 74 69 6f 6e 0d 0a 0d 0a 20 20 20 20 20 20 ┆ Badge Reader Option ┆ 0x54a0…54c0 20 20 20 84 54 68 65 20 6b 65 79 62 6f 61 72 64 20 6d 61 79 20 62 65 20 65 71 75 69 70 70 65 64 ┆ The keyboard may be equipped┆ 0x54c0…54e0 20 77 69 74 68 20 61 20 62 61 64 67 65 20 72 65 61 64 65 72 20 61 73 20 61 20 0a 19 89 80 80 73 ┆ with a badge reader as a s┆ 0x54e0…5500 65 63 75 72 69 74 79 20 6d 65 61 73 75 72 65 2e 20 54 68 65 20 72 65 61 64 65 72 20 69 73 20 6f ┆ecurity measure. The reader is o┆ 0x5500…5520 70 65 72 61 74 65 64 20 62 79 20 69 6e 73 65 72 74 69 6e 67 20 61 6e 20 0a 19 89 80 80 6f 70 65 ┆perated by inserting an ope┆ 0x5520…5540 72 61 74 6f 72 20 69 64 65 6e 74 69 66 69 63 61 74 69 6f 6e 20 62 61 64 67 65 20 6f 72 20 63 61 ┆rator identification badge or ca┆ 0x5540…5560 72 64 20 28 6d 61 67 6e 65 74 69 63 2d 73 74 72 69 70 65 64 20 0a 19 89 80 80 64 6f 63 75 6d 65 ┆rd (magnetic-striped docume┆ 0x5560…5580 6e 74 29 20 69 6e 74 6f 20 74 68 65 20 73 6c 6f 74 20 6f 66 20 74 68 65 20 72 65 61 64 65 72 2e ┆nt) into the slot of the reader.┆ 0x5580…55a0 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 6f 70 65 72 61 74 69 6f 6e 20 6f 66 20 74 ┆ The operation of t┆ 0x55a0…55c0 68 65 20 62 61 64 67 65 20 72 65 61 64 65 72 20 69 73 20 66 75 6c 6c 79 20 64 65 73 63 72 69 62 ┆he badge reader is fully describ┆ 0x55c0…55e0 65 64 20 69 6e 20 0a 19 89 80 80 74 68 65 20 6f 70 65 72 61 74 69 6e 67 20 67 75 69 64 65 20 66 ┆ed in the operating guide f┆ 0x55e0…5600 6f 72 20 74 68 65 20 52 43 38 35 35 20 49 42 4d 20 33 32 37 30 20 42 53 43 20 65 6d 75 6c 61 74 ┆or the RC855 IBM 3270 BSC emulat┆ 0x5600…5620 (43,) 6f 72 2c 20 0a 19 89 80 80 77 68 69 63 68 20 73 75 70 70 6f 72 74 73 20 74 68 65 20 75 73 65 20 ┆or, which supports the use ┆ 0x5620…5640 6f 66 20 73 75 63 68 20 64 65 76 69 63 65 73 20 28 38 29 2e 20 54 68 65 20 75 73 65 20 6f 66 20 ┆of such devices (8). The use of ┆ 0x5640…5660 61 20 0a 19 89 80 80 62 61 64 67 65 20 72 65 61 64 65 72 20 72 65 71 75 69 72 65 73 20 74 68 61 ┆a badge reader requires tha┆ 0x5660…5680 74 20 74 68 65 20 76 61 6c 75 65 20 6f 66 20 61 6e 20 4e 56 4d 20 70 61 72 61 6d 65 74 65 72 20 ┆t the value of an NVM parameter ┆ 0x5680…56a0 0a 19 89 80 80 62 65 20 73 65 74 20 61 63 63 6f 72 64 69 6e 67 6c 79 2e 0d 0a 0d 0a 0d 0a a1 b0 ┆ be set accordingly. ┆ 0x56a0…56c0 32 2e 32 2e 34 20 20 20 20 54 68 65 20 4b 65 79 62 6f 61 72 64 20 50 72 6f 70 65 72 0d 0a 0d 0a ┆2.2.4 The Keyboard Proper ┆ 0x56c0…56e0 20 20 20 20 20 20 20 20 20 84 54 68 65 20 6b 65 79 62 6f 61 72 64 20 69 73 20 73 75 70 70 6c 69 ┆ The keyboard is suppli┆ 0x56e0…5700 65 64 20 69 6e 20 64 69 66 66 65 72 65 6e 74 20 76 65 72 73 69 6f 6e 73 20 64 65 70 65 6e 64 69 ┆ed in different versions dependi┆ 0x5700…5720 6e 67 20 0a 19 89 80 80 6f 6e 20 74 68 65 20 72 65 71 75 69 72 65 64 20 28 6e 61 74 69 6f 6e 61 ┆ng on the required (nationa┆ 0x5720…5740 6c 29 20 63 68 61 72 61 63 74 65 72 20 73 65 74 2e 20 46 69 67 75 72 65 20 33 20 73 68 6f 77 73 ┆l) character set. Figure 3 shows┆ 0x5740…5760 20 0a 19 89 80 80 74 68 65 20 67 65 6e 65 72 61 6c 20 6c 61 79 6f 75 74 20 6f 66 20 74 68 65 20 ┆ the general layout of the ┆ 0x5760…5780 6b 65 79 62 6f 61 72 64 20 28 55 53 20 45 6e 67 6c 69 73 68 20 76 65 72 73 69 6f 6e 29 2e 20 0a ┆keyboard (US English version). ┆ 0x5780…57a0 19 89 80 80 46 6f 72 20 61 20 64 65 73 63 72 69 70 74 69 6f 6e 20 6f 66 20 61 6c 6c 20 6f 66 20 ┆ For a description of all of ┆ 0x57a0…57c0 74 68 65 20 61 76 61 69 6c 61 62 6c 65 20 76 65 72 73 69 6f 6e 73 20 6f 66 20 0a 19 89 80 80 74 ┆the available versions of t┆ 0x57c0…57e0 68 65 20 6b 65 79 62 6f 61 72 64 2c 20 73 65 65 20 28 31 31 29 2e 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a ┆he keyboard, see (11). ┆ 0x57e0…5800 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 0d 0a 20 20 20 20 ┆ ┆ 0x5800…5820 (44,) 20 20 20 20 20 46 69 67 2e 20 33 2e 20 84 52 43 38 35 35 20 54 65 72 6d 69 6e 61 6c 2c 20 4b 65 ┆ Fig. 3. RC855 Terminal, Ke┆ 0x5820…5840 79 62 6f 61 72 64 20 47 65 6e 65 72 61 6c 20 4c 61 79 6f 75 74 20 28 55 53 20 0a 19 91 80 80 45 ┆yboard General Layout (US E┆ 0x5840…584d 6e 67 6c 69 73 68 29 0d 0a 0d 0a 0d 0a ┆nglish) ┆ 0x584d…5850 FormFeed { 0x584d…5850 0c 84 90 ┆ ┆ 0x584d…5850 } 0x5850…5860 0a a1 b0 32 2e 32 2e 34 2e 31 20 20 47 65 6e 65 ┆ 2.2.4.1 Gene┆ 0x5860…5880 72 61 6c 20 46 75 6e 63 74 69 6f 6e 73 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 4b ┆ral Functions . K┆ 0x5880…58a0 65 79 20 43 6c 69 63 6b 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 53 65 65 20 53 65 63 74 ┆ey Click See Sect┆ 0x58a0…58c0 69 6f 6e 20 32 2e 32 2e 31 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 41 6c 61 72 ┆ion 2.2.1. . Alar┆ 0x58c0…58e0 6d 20 42 65 65 70 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 53 65 65 20 53 65 63 74 69 6f ┆m Beep See Sectio┆ 0x58e0…5900 6e 20 32 2e 32 2e 31 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 49 6e 68 69 62 69 ┆n 2.2.1. . Inhibi┆ 0x5900…5920 74 69 6f 6e 20 6f 66 20 4b 65 79 62 6f 61 72 64 20 55 73 65 0d 0a 0d 0a 20 20 20 20 20 20 20 20 ┆tion of Keyboard Use ┆ 0x5920…5940 20 20 20 84 54 68 65 20 75 73 65 20 6f 66 20 74 68 65 20 6b 65 79 62 6f 61 72 64 20 6d 61 79 20 ┆ The use of the keyboard may ┆ 0x5940…5960 62 65 20 74 65 6d 70 6f 72 61 72 69 6c 79 20 69 6e 68 69 62 69 74 65 64 20 0a 19 8b 80 80 61 73 ┆be temporarily inhibited as┆ 0x5960…5980 20 64 65 66 69 6e 65 64 20 62 79 20 74 68 65 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 ┆ defined by the application prog┆ 0x5980…59a0 72 61 6d 2e 20 54 68 69 73 20 69 73 20 6e 6f 72 6d 61 6c 80 0a 19 8b 80 80 6c 79 20 69 6e 64 69 ┆ram. This is normal ly indi┆ 0x59a0…59c0 63 61 74 65 64 20 62 79 20 61 20 6d 65 73 73 61 67 65 20 6f 6e 20 74 68 65 20 73 74 61 74 75 73 ┆cated by a message on the status┆ 0x59c0…59e0 20 6c 69 6e 65 20 6f 66 20 74 68 65 20 0a 19 8b 80 80 64 69 73 70 6c 61 79 20 73 63 72 65 65 6e ┆ line of the display screen┆ 0x59e0…5a00 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 4b 65 79 73 20 77 69 74 68 20 4c 61 6d ┆. . Keys with Lam┆ 0x5a00…5a20 (45,) 70 73 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 54 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 ┆ps The following ┆ 0x5a20…5a40 6b 65 79 73 20 61 72 65 20 70 72 6f 76 69 64 65 64 20 77 69 74 68 20 61 20 4c 45 44 20 28 6c 69 ┆keys are provided with a LED (li┆ 0x5a40…5a60 67 68 74 2d 0a 19 8b 80 80 65 6d 69 74 74 69 6e 67 20 64 69 6f 64 65 29 20 6c 61 6d 70 3a 20 4c ┆ght- emitting diode) lamp: L┆ 0x5a60…5a80 4f 43 4b 2c 20 53 45 4c 43 54 2c 20 55 53 4d 2c 20 50 52 49 4e 54 2c 20 61 6e 64 20 49 4e 53 20 ┆OCK, SELCT, USM, PRINT, and INS ┆ 0x5a80…5aa0 0a 19 8b 80 80 4d 4f 44 45 2e 20 54 68 65 20 66 75 6e 63 74 69 6f 6e 20 6f 66 20 74 68 65 20 6c ┆ MODE. The function of the l┆ 0x5aa0…5ac0 61 6d 70 20 28 77 69 74 68 20 74 68 65 20 65 78 63 65 70 74 69 6f 6e 20 6f 66 20 0a 19 8b 80 80 ┆amp (with the exception of ┆ 0x5ac0…5ae0 4c 4f 43 4b 29 20 69 73 20 64 65 66 69 6e 65 64 20 62 79 20 74 68 65 20 61 70 70 6c 69 63 61 74 ┆LOCK) is defined by the applicat┆ 0x5ae0…5b00 69 6f 6e 20 70 72 6f 67 72 61 6d 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 41 75 ┆ion program. . Au┆ 0x5b00…5b20 74 6f 6d 61 74 69 63 20 52 65 70 65 74 69 74 69 6f 6e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 ┆tomatic Repetition ┆ 0x5b20…5b40 20 84 57 68 65 6e 20 61 20 6b 65 79 20 69 73 20 68 65 6c 64 20 64 65 70 72 65 73 73 65 64 20 66 ┆ When a key is held depressed f┆ 0x5b40…5b60 6f 72 20 6d 6f 72 65 20 74 68 61 6e 20 74 68 72 65 65 2d 0a 19 8b 80 80 71 75 61 72 74 65 72 73 ┆or more than three- quarters┆ 0x5b60…5b80 20 6f 66 20 61 20 73 65 63 6f 6e 64 2c 20 74 68 65 20 72 65 6c 65 76 61 6e 74 20 63 68 61 72 61 ┆ of a second, the relevant chara┆ 0x5b80…5ba0 63 74 65 72 20 63 6f 64 65 20 69 73 20 0a 19 8b 80 80 72 65 70 65 61 74 65 64 6c 79 20 67 65 6e ┆cter code is repeatedly gen┆ 0x5ba0…5bc0 65 72 61 74 65 64 20 61 74 20 74 68 65 20 72 61 74 65 20 6f 66 20 32 30 20 63 68 61 72 61 63 74 ┆erated at the rate of 20 charact┆ 0x5bc0…5be0 65 72 73 20 70 65 72 20 0a 19 8b 80 80 73 65 63 6f 6e 64 2e 20 54 68 65 20 61 75 74 6f 6d 61 74 ┆ers per second. The automat┆ 0x5be0…5c00 69 63 20 72 65 70 65 74 69 74 69 6f 6e 20 66 65 61 74 75 72 65 20 64 6f 65 73 20 6e 6f 74 20 0a ┆ic repetition feature does not ┆ 0x5c00…5c20 (46,) 19 8b 80 80 61 70 70 6c 79 20 74 6f 20 74 68 65 20 74 68 72 65 65 20 61 75 78 69 6c 69 61 72 79 ┆ apply to the three auxiliary┆ 0x5c20…5c40 20 6b 65 79 73 2c 20 77 68 69 63 68 20 61 72 65 20 64 65 73 63 72 69 62 65 64 20 0a 19 8b 80 80 ┆ keys, which are described ┆ 0x5c40…5c60 62 65 6c 6f 77 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 41 75 78 69 6c 69 61 72 ┆below. . Auxiliar┆ 0x5c60…5c80 79 20 4b 65 79 73 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 41 6e 20 61 75 78 69 6c 69 61 ┆y Keys An auxilia┆ 0x5c80…5ca0 72 79 20 6b 65 79 20 69 73 20 61 6c 77 61 79 73 20 75 73 65 64 20 74 6f 67 65 74 68 65 72 20 77 ┆ry key is always used together w┆ 0x5ca0…5cc0 69 74 68 20 61 6e 6f 74 68 65 72 2c 20 0a 19 8b 80 80 63 6f 64 65 2d 67 65 6e 65 72 61 74 69 6e ┆ith another, code-generatin┆ 0x5cc0…5ce0 67 20 6b 65 79 2e 20 54 68 65 20 63 6f 6d 62 69 6e 61 74 69 6f 6e 20 6f 66 20 74 68 65 20 74 77 ┆g key. The combination of the tw┆ 0x5ce0…5d00 6f 20 6b 65 79 73 20 0a 19 8b 80 80 63 61 75 73 65 73 20 67 65 6e 65 72 61 74 69 6f 6e 20 6f 66 ┆o keys causes generation of┆ 0x5d00…5d20 20 61 6e 20 61 6c 74 65 72 6e 61 74 69 76 65 20 63 6f 64 65 20 28 65 2e 67 2e 20 74 68 65 20 0a ┆ an alternative code (e.g. the ┆ 0x5d20…5d40 19 8b 80 80 63 6f 64 65 20 66 6f 72 20 61 20 63 61 70 69 74 61 6c 20 72 61 74 68 65 72 20 74 68 ┆ code for a capital rather th┆ 0x5d40…5d60 61 6e 20 61 20 73 6d 61 6c 6c 20 6c 65 74 74 65 72 29 2e 20 54 68 65 72 65 20 0a 19 8b 80 80 61 ┆an a small letter). There a┆ 0x5d60…5d80 72 65 20 74 68 72 65 65 20 61 75 78 69 6c 69 61 72 79 20 6b 65 79 73 2c 20 6c 61 62 65 6c 65 64 ┆re three auxiliary keys, labeled┆ 0x5d80…5da0 20 53 48 49 46 54 2c 20 4c 4f 43 4b 2c 20 61 6e 64 20 0a 19 8b 80 80 43 54 52 4c 2e 20 54 68 65 ┆ SHIFT, LOCK, and CTRL. The┆ 0x5da0…5dc0 20 53 48 49 46 54 20 61 6e 64 20 43 54 52 4c 20 6b 65 79 73 20 61 72 65 20 68 65 6c 64 20 64 65 ┆ SHIFT and CTRL keys are held de┆ 0x5dc0…5de0 70 72 65 73 73 65 64 20 77 68 69 6c 65 20 0a 19 8b 80 80 74 68 65 20 63 6f 64 65 2d 67 65 6e 65 ┆pressed while the code-gene┆ 0x5de0…5e00 72 61 74 69 6e 67 20 6b 65 79 20 69 73 20 70 72 65 73 73 65 64 2e 0d 0a 0d 0a 20 20 20 20 20 20 ┆rating key is pressed. ┆ 0x5e00…5e20 (47,) 20 20 20 20 20 53 48 49 46 54 20 84 54 68 65 20 53 48 49 46 54 20 6b 65 79 20 68 61 73 20 74 68 ┆ SHIFT The SHIFT key has th┆ 0x5e20…5e40 72 65 65 20 64 69 66 66 65 72 65 6e 74 20 66 75 6e 63 74 69 6f 6e 73 3a 0d 0a 0d 0a 20 20 20 20 ┆ree different functions: ┆ 0x5e40…5e60 20 20 20 20 20 20 20 20 20 20 20 20 20 31 2e 20 84 54 6f 67 65 74 68 65 72 20 77 69 74 68 20 61 ┆ 1. Together with a┆ 0x5e60…5e80 6e 20 61 6c 70 68 61 6d 65 72 69 63 20 6b 65 79 20 6f 6e 20 74 68 65 20 6d 61 69 6e 20 0a 19 94 ┆n alphameric key on the main ┆ 0x5e80…5ea0 80 80 6b 65 79 62 6f 61 72 64 2c 20 74 6f 20 67 65 6e 65 72 61 74 65 20 74 68 65 20 75 70 70 65 ┆ keyboard, to generate the uppe┆ 0x5ea0…5ec0 72 20 63 61 73 65 20 63 6f 64 65 20 66 6f 72 20 0a 19 94 80 80 61 6e 20 61 6c 70 68 61 62 65 74 ┆r case code for an alphabet┆ 0x5ec0…5ee0 69 63 20 63 68 61 72 61 63 74 65 72 20 6b 65 79 20 6f 72 20 74 68 65 20 75 70 70 65 72 20 0a 19 ┆ic character key or the upper ┆ 0x5ee0…5f00 94 80 80 63 68 61 72 61 63 74 65 72 20 63 6f 64 65 20 66 6f 72 20 61 20 64 75 61 6c 20 63 68 61 ┆ character code for a dual cha┆ 0x5f00…5f20 72 61 63 74 65 72 20 6b 65 79 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆racter key. ┆ 0x5f20…5f40 32 2e 20 84 41 73 20 64 65 73 63 72 69 62 65 64 20 69 6e 20 53 65 63 74 69 6f 6e 73 20 32 2e 32 ┆2. As described in Sections 2.2┆ 0x5f40…5f60 2e 34 2e 33 20 61 6e 64 20 32 2e 32 2e 34 2e 34 2e 0d 0a 0d 0a 8c 83 a0 0a 20 20 20 20 20 20 20 ┆.4.3 and 2.2.4.4. ┆ 0x5f60…5f80 20 20 20 20 20 20 20 20 20 20 33 2e 20 84 54 6f 67 65 74 68 65 72 20 77 69 74 68 20 61 20 73 70 ┆ 3. Together with a sp┆ 0x5f80…5fa0 65 63 69 66 69 63 20 6b 65 79 2c 20 74 6f 20 6d 6f 64 69 66 79 20 74 68 65 20 0a 19 95 80 80 6e ┆ecific key, to modify the n┆ 0x5fa0…5fc0 6f 72 6d 61 6c 20 66 75 6e 63 74 69 6f 6e 20 6f 66 20 74 68 61 74 20 6b 65 79 2e 20 54 68 65 20 ┆ormal function of that key. The ┆ 0x5fc0…5fe0 61 6c 74 65 72 6e 61 74 69 76 65 20 0a 19 95 80 80 66 75 6e 63 74 69 6f 6e 20 73 6f 20 6f 62 74 ┆alternative function so obt┆ 0x5fe0…6000 61 69 6e 65 64 20 69 73 20 64 65 73 63 72 69 62 65 64 2c 20 66 6f 6c 6c 6f 77 69 6e 67 20 0a 19 ┆ained is described, following ┆ 0x6000…6020 (48,) 95 80 80 74 68 65 20 64 65 73 63 72 69 70 74 69 6f 6e 20 6f 66 20 74 68 65 20 6e 6f 72 6d 61 6c ┆ the description of the normal┆ 0x6020…6040 20 66 75 6e 63 74 69 6f 6e 20 6f 66 20 0a 19 95 80 80 74 68 65 20 6b 65 79 2c 20 69 6e 20 74 68 ┆ function of the key, in th┆ 0x6040…6060 65 20 6f 70 65 72 61 74 69 6e 67 20 67 75 69 64 65 20 66 6f 72 20 74 68 65 20 0a 19 95 80 80 72 ┆e operating guide for the r┆ 0x6060…6080 65 6c 65 76 61 6e 74 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 2e 0d 0a 0d 0a ┆elevant application program. ┆ 0x6080…60a0 20 20 20 20 20 20 20 20 20 20 20 4c 4f 43 4b 20 84 54 68 65 20 4c 4f 43 4b 20 6b 65 79 20 63 61 ┆ LOCK The LOCK key ca┆ 0x60a0…60c0 75 73 65 73 20 74 68 65 20 6d 61 69 6e 20 6b 65 79 62 6f 61 72 64 20 74 6f 20 6f 70 65 72 61 74 ┆uses the main keyboard to operat┆ 0x60c0…60e0 65 20 0a 19 90 80 80 69 6e 20 74 68 65 20 61 6c 70 68 61 2d 6c 6f 63 6b 20 6d 6f 64 65 20 28 69 ┆e in the alpha-lock mode (i┆ 0x60e0…6100 6e 20 77 68 69 63 68 20 63 61 73 65 20 74 68 65 20 6c 61 6d 70 20 6f 6e 20 0a 19 90 80 80 74 68 ┆n which case the lamp on th┆ 0x6100…6120 65 20 6b 65 79 20 69 73 20 6c 69 74 29 2e 20 54 68 65 20 53 48 49 46 54 20 66 75 6e 63 74 69 6f ┆e key is lit). The SHIFT functio┆ 0x6120…6140 6e 20 69 73 20 74 68 65 6e 20 0a 19 90 80 80 61 70 70 6c 69 65 64 20 61 75 74 6f 6d 61 74 69 63 ┆n is then applied automatic┆ 0x6140…6160 61 6c 6c 79 20 74 6f 20 61 6c 6c 20 61 6c 70 68 61 6d 65 72 69 63 20 6b 65 79 73 20 0a 19 90 80 ┆ally to all alphameric keys ┆ 0x6160…6180 80 6c 61 62 65 6c 65 64 20 77 69 74 68 20 61 20 73 69 6e 67 6c 65 20 61 6c 70 68 61 62 65 74 69 ┆ labeled with a single alphabeti┆ 0x6180…61a0 63 20 63 68 61 72 61 63 74 65 72 2e 20 28 54 68 65 20 0a 19 90 80 80 53 48 49 46 54 20 6b 65 79 ┆c character. (The SHIFT key┆ 0x61a0…61c0 20 69 74 73 65 6c 66 20 63 61 6e 2c 20 6f 66 20 63 6f 75 72 73 65 2c 20 73 74 69 6c 6c 20 62 65 ┆ itself can, of course, still be┆ 0x61c0…61e0 20 75 73 65 64 20 0a 19 90 80 80 74 6f 67 65 74 68 65 72 20 77 69 74 68 20 74 68 65 20 64 75 61 ┆ used together with the dua┆ 0x61e0…6200 6c 20 63 68 61 72 61 63 74 65 72 20 6b 65 79 73 29 2e 20 54 68 65 20 6d 61 69 6e 20 0a 19 90 80 ┆l character keys). The main ┆ 0x6200…6220 (49,) 80 6b 65 79 62 6f 61 72 64 20 77 69 6c 6c 20 72 65 6d 61 69 6e 20 69 6e 20 74 68 65 20 61 6c 70 ┆ keyboard will remain in the alp┆ 0x6220…6240 68 61 2d 6c 6f 63 6b 20 6d 6f 64 65 20 75 6e 74 69 6c 20 0a 19 90 80 80 74 68 65 20 4c 4f 43 4b ┆ha-lock mode until the LOCK┆ 0x6240…6260 20 6b 65 79 20 69 73 20 70 72 65 73 73 65 64 20 61 67 61 69 6e 2e 0d 0a 0d 0a 20 20 20 20 20 20 ┆ key is pressed again. ┆ 0x6260…6280 20 20 20 20 20 20 20 20 20 20 84 49 66 20 74 68 65 20 6d 61 69 6e 20 6b 65 79 62 6f 61 72 64 20 ┆ If the main keyboard ┆ 0x6280…62a0 61 6c 77 61 79 73 20 6f 70 65 72 61 74 65 73 20 69 6e 20 74 68 65 20 0a 19 90 80 80 61 6c 70 68 ┆always operates in the alph┆ 0x62a0…62c0 61 2d 6c 6f 63 6b 20 6d 6f 64 65 2c 20 61 73 20 64 65 66 69 6e 65 64 20 62 79 20 61 6e 20 4e 56 ┆a-lock mode, as defined by an NV┆ 0x62c0…62e0 4d 20 70 61 72 61 6d 65 74 65 72 2c 20 0a 19 90 80 80 74 68 65 20 4c 4f 43 4b 20 6b 65 79 20 69 ┆M parameter, the LOCK key i┆ 0x62e0…6300 73 20 6e 6f 74 20 75 73 65 64 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 43 54 52 4c 20 84 ┆s not used. CTRL ┆ 0x6300…6320 54 68 65 20 43 54 52 4c 20 28 63 6f 6e 74 72 6f 6c 29 20 6b 65 79 20 69 73 20 75 73 65 64 20 6d ┆The CTRL (control) key is used m┆ 0x6320…6340 61 69 6e 6c 79 20 74 6f 67 65 74 68 65 72 20 0a 19 90 80 80 77 69 74 68 20 61 20 66 75 6e 63 74 ┆ainly together with a funct┆ 0x6340…6360 69 6f 6e 20 6b 65 79 20 74 6f 20 70 65 72 66 6f 72 6d 20 61 20 73 79 73 74 65 6d 20 66 75 6e 63 ┆ion key to perform a system func┆ 0x6360…6380 74 69 6f 6e 2e 20 0a 19 90 80 80 48 65 72 65 2c 20 74 68 65 20 63 6f 6d 62 69 6e 61 74 69 6f 6e ┆tion. Here, the combination┆ 0x6380…63a0 20 6f 66 20 74 77 6f 20 6b 65 79 73 20 73 65 72 76 65 73 20 74 6f 20 0a 19 90 80 80 6d 69 6e 69 ┆ of two keys serves to mini┆ 0x63a0…63c0 6d 69 7a 65 20 74 68 65 20 75 6e 69 6e 74 65 6e 74 69 6f 6e 61 6c 20 61 63 74 69 76 61 74 69 6f ┆mize the unintentional activatio┆ 0x63c0…63e0 6e 20 6f 66 20 73 75 63 68 20 0a 19 90 80 80 66 75 6e 63 74 69 6f 6e 73 2e 20 42 79 20 77 61 79 ┆n of such functions. By way┆ 0x63e0…6400 20 6f 66 20 65 78 61 6d 70 6c 65 2c 20 74 68 65 20 6b 65 79 20 63 6f 6d 62 69 6e 61 74 69 6f 6e ┆ of example, the key combination┆ 0x6400…6420 (50,) 20 0a 19 90 80 80 43 54 52 4c 20 43 4c 45 41 52 20 6d 61 79 20 62 65 20 75 73 65 64 20 77 68 65 ┆ CTRL CLEAR may be used whe┆ 0x6420…6440 6e 20 74 68 65 20 52 43 38 35 35 20 49 42 4d 20 33 32 37 30 20 0a 19 90 80 80 42 53 43 20 65 6d ┆n the RC855 IBM 3270 BSC em┆ 0x6440…6460 75 6c 61 74 6f 72 20 69 73 20 72 75 6e 6e 69 6e 67 20 74 6f 20 72 65 73 65 74 20 74 68 65 20 74 ┆ulator is running to reset the t┆ 0x6460…6480 65 72 6d 69 6e 61 6c 2e 0d 0a 0d 0a 0d 0a a1 b0 32 2e 32 2e 34 2e 32 20 20 41 6c 70 68 61 6d 65 ┆erminal. 2.2.4.2 Alphame┆ 0x6480…64a0 72 69 63 20 4b 65 79 73 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 61 6c 70 68 61 6d ┆ric Keys The alpham┆ 0x64a0…64c0 65 72 69 63 20 6b 65 79 73 20 67 65 6e 65 72 61 74 65 20 63 6f 64 65 73 20 63 6f 72 72 65 73 70 ┆eric keys generate codes corresp┆ 0x64c0…64e0 6f 6e 64 69 6e 67 20 74 6f 20 74 68 65 20 0a 19 89 80 80 61 6c 70 68 61 62 65 74 69 63 2c 20 6e ┆onding to the alphabetic, n┆ 0x64e0…6500 75 6d 65 72 69 63 2c 20 6f 72 20 73 70 65 63 69 61 6c 20 63 68 61 72 61 63 74 65 72 20 6f 72 20 ┆umeric, or special character or ┆ 0x6500…6520 63 68 61 72 61 63 74 65 72 73 20 0a 19 89 80 80 77 69 74 68 20 77 68 69 63 68 20 65 61 63 68 20 ┆characters with which each ┆ 0x6520…6540 6b 65 79 20 69 73 20 6c 61 62 65 6c 65 64 2c 20 65 69 74 68 65 72 20 64 69 72 65 63 74 6c 79 20 ┆key is labeled, either directly ┆ 0x6540…6560 6f 72 20 0a 19 89 80 80 74 6f 67 65 74 68 65 72 20 77 69 74 68 20 74 68 65 20 53 48 49 46 54 20 ┆or together with the SHIFT ┆ 0x6560…6580 6b 65 79 2e 20 41 6e 79 20 72 65 73 74 72 69 63 74 69 6f 6e 20 6f 6e 20 74 68 65 20 75 73 65 20 ┆key. Any restriction on the use ┆ 0x6580…65a0 0a 19 89 80 80 6f 66 20 74 68 65 73 65 20 6b 65 79 73 20 69 73 20 64 65 73 63 72 69 62 65 64 20 ┆ of these keys is described ┆ 0x65a0…65c0 69 6e 20 74 68 65 20 6f 70 65 72 61 74 69 6e 67 20 67 75 69 64 65 20 66 6f 72 20 0a 19 89 80 80 ┆in the operating guide for ┆ 0x65c0…65e0 74 68 65 20 72 65 6c 65 76 61 6e 74 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d ┆the relevant application program┆ 0x65e0…6600 2e 0d 0a 0d 0a 0d 0a a1 b0 32 2e 32 2e 34 2e 33 20 20 4e 75 6d 65 72 69 63 20 50 61 64 0d 0a 0d ┆. 2.2.4.3 Numeric Pad ┆ 0x6600…6620 (51,) 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 63 6c 75 73 74 65 72 20 6f 66 20 6b 65 79 73 20 74 ┆ The cluster of keys t┆ 0x6620…6640 6f 20 74 68 65 20 72 69 67 68 74 20 6f 66 20 74 68 65 20 6d 61 69 6e 20 6b 65 79 62 6f 61 72 64 ┆o the right of the main keyboard┆ 0x6640…6660 20 0a 19 89 80 80 69 6e 63 6c 75 64 65 73 20 61 20 6e 75 6d 65 72 69 63 20 70 61 64 2c 20 64 65 ┆ includes a numeric pad, de┆ 0x6660…6680 73 69 67 6e 65 64 20 74 6f 20 66 61 63 69 6c 69 74 61 74 65 20 74 68 65 20 65 6e 74 72 79 20 0a ┆signed to facilitate the entry ┆ 0x6680…66a0 19 89 80 80 6f 66 20 6e 75 6d 65 72 69 63 20 64 61 74 61 2e 20 42 65 73 69 64 65 73 20 74 68 65 ┆ of numeric data. Besides the┆ 0x66a0…66c0 20 64 65 63 69 6d 61 6c 20 64 69 67 69 74 73 2c 20 74 68 65 20 6e 75 6d 65 72 69 63 20 0a 19 89 ┆ decimal digits, the numeric ┆ 0x66c0…66e0 80 80 70 61 64 20 63 6f 6e 74 61 69 6e 73 20 61 20 6d 69 6e 75 73 20 73 69 67 6e 2c 20 73 70 61 ┆ pad contains a minus sign, spa┆ 0x66e0…6700 63 65 2c 20 61 6e 64 20 61 20 64 65 63 69 6d 61 6c 20 70 6f 69 6e 74 20 0a 19 89 80 80 63 68 61 ┆ce, and a decimal point cha┆ 0x6700…6720 72 61 63 74 65 72 2e 20 41 6e 20 4e 56 4d 20 70 61 72 61 6d 65 74 65 72 20 64 65 66 69 6e 65 73 ┆racter. An NVM parameter defines┆ 0x6720…6740 20 77 68 65 74 68 65 72 20 74 68 65 20 64 65 63 69 6d 61 6c 20 0a 19 89 80 80 70 6f 69 6e 74 20 ┆ whether the decimal point ┆ 0x6740…6760 63 68 61 72 61 63 74 65 72 20 69 73 20 67 65 6e 65 72 61 74 65 64 20 61 73 20 61 20 70 65 72 69 ┆character is generated as a peri┆ 0x6760…6780 6f 64 20 28 2e 29 20 6f 72 20 63 6f 6d 6d 61 20 0a 19 89 80 80 28 2c 29 2e 0d 0a 0d 0a 20 20 20 ┆od (.) or comma (,). ┆ 0x6780…67a0 20 20 20 20 20 20 84 a1 e1 b0 4e 6f 74 65 e1 f0 20 74 68 61 74 20 74 68 65 20 6b 65 79 73 20 6f ┆ Note that the keys o┆ 0x67a0…67c0 6e 20 74 68 65 20 6e 75 6d 65 72 69 63 20 70 61 64 20 6c 61 62 65 6c 65 64 20 77 69 74 68 20 74 ┆n the numeric pad labeled with t┆ 0x67c0…67e0 68 65 20 0a 19 89 81 80 64 65 63 69 6d 61 6c 20 64 69 67 69 74 73 20 31 2e 2e 39 20 61 72 65 20 ┆he decimal digits 1..9 are ┆ 0x67e0…6800 75 73 65 64 20 74 6f 67 65 74 68 65 72 20 77 69 74 68 20 74 68 65 20 53 48 49 46 54 20 6b 65 79 ┆used together with the SHIFT key┆ 0x6800…6820 (52,) 20 0a 19 89 81 80 74 6f 20 67 65 6e 65 72 61 74 65 20 74 68 65 20 63 6f 64 65 73 20 66 6f 72 20 ┆ to generate the codes for ┆ 0x6820…6840 74 68 65 20 70 72 6f 67 72 61 6d 20 66 75 6e 63 74 69 6f 6e 73 20 50 46 31 2e 2e 50 46 39 20 0a ┆the program functions PF1..PF9 ┆ 0x6840…6854 19 89 81 80 28 32 2e 32 2e 34 2e 34 29 2e 0d 0a 0d 0a 0d 0a ┆ (2.2.4.4). ┆ 0x6854…6857 FormFeed { 0x6854…6857 0c 83 c0 ┆ ┆ 0x6854…6857 } 0x6857…6860 0a a1 b0 32 2e 32 2e 34 2e ┆ 2.2.4.┆ 0x6860…6880 34 20 20 41 74 74 65 6e 74 69 6f 6e 20 4b 65 79 73 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 ┆4 Attention Keys T┆ 0x6880…68a0 68 65 20 61 74 74 65 6e 74 69 6f 6e 20 6b 65 79 73 20 61 72 65 20 66 6f 75 6e 64 20 6d 6f 73 74 ┆he attention keys are found most┆ 0x68a0…68c0 6c 79 20 6f 6e 20 74 68 65 20 73 65 70 61 72 61 74 65 20 72 6f 77 20 0a 19 89 80 80 61 62 6f 76 ┆ly on the separate row abov┆ 0x68c0…68e0 65 20 74 68 65 20 6d 61 69 6e 20 6b 65 79 62 6f 61 72 64 2e 20 54 68 65 20 66 75 6e 63 74 69 6f ┆e the main keyboard. The functio┆ 0x68e0…6900 6e 20 6f 66 20 74 68 65 73 65 20 6b 65 79 73 20 0a 19 89 80 80 64 65 70 65 6e 64 73 20 65 6e 74 ┆n of these keys depends ent┆ 0x6900…6920 69 72 65 6c 79 20 6f 6e 20 74 68 65 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d ┆irely on the application program┆ 0x6920…6940 2c 20 69 2e 65 2e 20 6e 6f 74 20 0a 19 89 80 80 6f 6e 6c 79 2c 20 73 61 79 2c 20 74 68 65 20 52 ┆, i.e. not only, say, the R┆ 0x6940…6960 43 38 35 35 20 49 42 4d 20 33 32 37 30 20 42 53 43 20 65 6d 75 6c 61 74 6f 72 2c 20 62 75 74 20 ┆C855 IBM 3270 BSC emulator, but ┆ 0x6960…6980 61 6c 73 6f 20 0a 19 89 80 80 74 68 65 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 ┆also the application progra┆ 0x6980…69a0 6d 20 72 75 6e 6e 69 6e 67 20 6f 6e 20 74 68 65 20 72 65 6d 6f 74 65 20 68 6f 73 74 20 0a 19 89 ┆m running on the remote host ┆ 0x69a0…69c0 80 80 63 6f 6d 70 75 74 65 72 2e 20 54 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 69 73 20 61 20 73 ┆ computer. The following is a s┆ 0x69c0…69e0 69 6d 70 6c 65 20 6c 69 73 74 20 6f 66 20 74 68 65 20 61 74 74 65 6e 80 0a 19 89 80 80 74 69 6f ┆imple list of the atten tio┆ 0x69e0…6a00 6e 20 6b 65 79 73 3a 0d 0a 0d 0a e1 e1 20 20 20 20 20 20 20 20 20 84 a1 e1 b0 4c 61 62 65 6c e1 ┆n keys: Label ┆ 0x6a00…6a20 (53,) 20 20 20 20 20 20 a1 e1 20 43 6f 6d 6d 65 6e 74 e1 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 53 45 ┆ Comment SE┆ 0x6a20…6a40 4c 43 54 20 20 20 20 20 20 20 53 65 6c 65 63 74 20 6b 65 79 2c 20 77 69 74 68 20 6c 61 6d 70 2e ┆LCT Select key, with lamp.┆ 0x6a40…6a60 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 43 4c 45 41 52 20 20 20 20 20 20 20 43 6c 65 61 72 20 6b ┆ CLEAR Clear k┆ 0x6a60…6a80 65 79 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 50 41 31 2e 2e 50 41 35 20 20 20 20 50 72 6f 67 ┆ey. PA1..PA5 Prog┆ 0x6a80…6aa0 72 61 6d 20 41 63 63 65 73 73 20 6b 65 79 73 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 ┆ram Access keys. ┆ 0x6aa0…6ac0 20 20 20 20 20 20 20 20 20 84 b0 4e 6f 74 65 f0 20 74 68 61 74 20 74 68 65 20 6b 65 79 73 20 6c ┆ Note that the keys l┆ 0x6ac0…6ae0 61 62 65 6c 65 64 20 50 41 31 2e 2e 50 41 35 20 61 72 65 20 75 73 65 64 20 0a 19 96 81 80 74 6f ┆abeled PA1..PA5 are used to┆ 0x6ae0…6b00 67 65 74 68 65 72 20 77 69 74 68 20 53 48 49 46 54 20 74 6f 20 67 65 6e 65 72 61 74 65 20 74 68 ┆gether with SHIFT to generate th┆ 0x6b00…6b20 65 20 63 6f 64 65 73 20 0a 19 96 81 80 66 6f 72 20 50 41 36 2e 2e 50 41 31 30 2e 0d 0a 0d 0a 20 ┆e codes for PA6..PA10. ┆ 0x6b20…6b40 20 20 20 20 20 20 20 20 55 53 4d 20 20 20 20 20 20 20 20 20 55 6e 73 6f 6c 69 63 69 74 65 64 20 ┆ USM Unsolicited ┆ 0x6b40…6b60 4d 65 73 73 61 67 65 20 6b 65 79 2c 20 77 69 74 68 20 6c 61 6d 70 2e 0d 0a 0d 0a 20 20 20 20 20 ┆Message key, with lamp. ┆ 0x6b60…6b80 20 20 20 20 50 46 31 30 2e 2e 50 46 31 34 20 20 50 72 6f 67 72 61 6d 20 46 75 6e 63 74 69 6f 6e ┆ PF10..PF14 Program Function┆ 0x6b80…6ba0 20 6b 65 79 73 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 ┆ keys. ┆ 0x6ba0…6bc0 b0 4e 6f 74 65 f0 20 74 68 61 74 20 74 68 65 20 6b 65 79 73 20 6f 6e 20 74 68 65 20 6e 75 6d 65 ┆ Note that the keys on the nume┆ 0x6bc0…6be0 72 69 63 20 70 61 64 20 0a 19 95 81 80 6c 61 62 65 6c 65 64 20 31 2e 2e 39 20 61 72 65 20 75 73 ┆ric pad labeled 1..9 are us┆ 0x6be0…6c00 65 64 20 74 6f 67 65 74 68 65 72 20 77 69 74 68 20 53 48 49 46 54 20 74 6f 20 0a 19 95 81 80 67 ┆ed together with SHIFT to g┆ 0x6c00…6c20 (54,) 65 6e 65 72 61 80 74 65 20 74 68 65 20 63 6f 64 65 73 20 66 6f 72 20 50 46 31 2e 2e 50 46 39 2e ┆enera te the codes for PF1..PF9.┆ 0x6c20…6c40 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 43 55 52 53 52 20 53 45 4c 43 54 20 43 75 72 73 6f 72 20 ┆ CURSR SELCT Cursor ┆ 0x6c40…6c60 53 65 6c 65 63 74 20 6b 65 79 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 50 52 49 4e 54 20 20 20 ┆Select key. PRINT ┆ 0x6c60…6c80 20 20 20 20 50 72 69 6e 74 20 6b 65 79 2c 20 77 69 74 68 20 6c 61 6d 70 2e 0d 0a 0d 0a 20 20 20 ┆ Print key, with lamp. ┆ 0x6c80…6ca0 20 20 20 20 20 20 45 53 43 20 20 20 20 20 20 20 20 20 45 73 63 61 70 65 20 6b 65 79 2e 0d 0a 0d ┆ ESC Escape key. ┆ 0x6ca0…6cc0 0a 20 20 20 20 20 20 20 20 20 52 45 53 45 54 20 20 20 20 20 20 20 52 65 73 65 74 20 6b 65 79 2e ┆ RESET Reset key.┆ 0x6cc0…6ce0 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 53 45 4e 44 20 20 20 20 20 20 20 20 53 65 6e 64 20 6b 65 ┆ SEND Send ke┆ 0x6ce0…6d00 79 2e 0d 0a 0d 0a 0d 0a a1 b0 32 2e 32 2e 34 2e 35 20 20 45 64 69 74 69 6e 67 20 4b 65 79 73 0d ┆y. 2.2.4.5 Editing Keys ┆ 0x6d00…6d20 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 65 64 69 74 69 6e 67 20 6b 65 79 73 2c 20 77 ┆ The editing keys, w┆ 0x6d20…6d40 68 69 63 68 20 61 72 65 20 66 6f 75 6e 64 20 6d 6f 73 74 6c 79 20 69 6e 20 74 68 65 20 63 6c 75 ┆hich are found mostly in the clu┆ 0x6d40…6d60 73 74 65 72 20 0a 19 89 80 80 74 6f 20 74 68 65 20 72 69 67 68 74 20 6f 66 20 74 68 65 20 6d 61 ┆ster to the right of the ma┆ 0x6d60…6d80 69 6e 20 6b 65 79 62 6f 61 72 64 2c 20 61 72 65 20 75 73 65 64 20 74 6f 20 6d 6f 76 65 20 74 68 ┆in keyboard, are used to move th┆ 0x6d80…6da0 65 20 0a 19 89 80 80 63 75 72 73 6f 72 20 61 62 6f 75 74 20 74 68 65 20 64 69 73 70 6c 61 79 20 ┆e cursor about the display ┆ 0x6da0…6dc0 73 63 72 65 65 6e 20 61 6e 64 20 74 6f 20 65 64 69 74 20 64 61 74 61 20 64 69 73 80 0a 19 89 80 ┆screen and to edit data dis ┆ 0x6dc0…6de0 80 70 6c 61 79 65 64 20 6f 6e 20 74 68 65 20 73 63 72 65 65 6e 2e 20 54 68 65 20 66 75 6e 63 74 ┆ played on the screen. The funct┆ 0x6de0…6e00 69 6f 6e 20 6f 66 20 74 68 65 73 65 20 6b 65 79 73 20 64 65 70 65 6e 64 73 20 0a 19 89 80 80 6f ┆ion of these keys depends o┆ 0x6e00…6e20 (55,) 6e 20 74 68 65 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 20 69 6e 20 71 75 65 ┆n the application program in que┆ 0x6e20…6e40 73 74 69 6f 6e 2e 20 54 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 69 73 20 0a 19 89 80 80 61 20 73 ┆stion. The following is a s┆ 0x6e40…6e60 69 6d 70 6c 65 20 6c 69 73 74 20 6f 66 20 74 68 65 20 65 64 69 74 69 6e 67 20 6b 65 79 73 3a 0d ┆imple list of the editing keys: ┆ 0x6e60…6e80 0a 0d 0a 20 20 20 20 20 20 20 20 20 a1 e1 b0 4c 61 62 65 6c e1 20 20 20 20 20 20 20 1f a1 e1 43 ┆ Label C┆ 0x6e80…6ea0 6f 6d 6d 65 6e 74 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆omment ┆ 0x6ea0…6ec0 84 84 a1 e1 b0 4b 65 79 73 20 74 6f 20 6d 6f 76 65 20 74 68 65 20 63 75 72 73 6f 72 3a 0d 0a 0d ┆ Keys to move the cursor: ┆ 0x6ec0…6ee0 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 84 4f 6e 65 20 70 6f 73 ┆ One pos┆ 0x6ee0…6f00 69 74 69 6f 6e 20 72 69 67 68 74 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ition right. ┆ 0x6f00…6f20 20 20 20 20 20 20 4f 6e 65 20 70 6f 73 69 74 69 6f 6e 20 6c 65 66 74 20 28 62 61 63 6b 73 70 61 ┆ One position left (backspa┆ 0x6f20…6f40 63 65 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 53 65 ┆ce). Se┆ 0x6f40…6f60 76 65 72 61 6c 20 70 6f 73 69 74 69 6f 6e 73 20 72 69 67 68 74 20 28 74 61 62 75 6c 61 74 69 6f ┆veral positions right (tabulatio┆ 0x6f60…6f80 6e 29 2e 0d 0a 0d 0a 8c 83 e0 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆n). ┆ 0x6f80…6fa0 20 53 65 76 65 72 61 6c 20 70 6f 73 69 74 69 6f 6e 73 20 6c 65 66 74 20 28 62 61 63 6b 20 74 61 ┆ Several positions left (back ta┆ 0x6fa0…6fc0 62 75 6c 61 74 69 6f 6e 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆bulation). ┆ 0x6fc0…6fe0 20 20 20 20 84 4f 6e 65 20 70 6f 73 69 74 69 6f 6e 20 28 6c 69 6e 65 29 20 64 6f 77 6e 2e 0d 0a ┆ One position (line) down. ┆ 0x6fe0…7000 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 4f 6e 65 20 70 6f 73 ┆ One pos┆ 0x7000…7020 (56,) 69 74 69 6f 6e 20 28 6c 69 6e 65 29 20 75 70 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 ┆ition (line) up. ┆ 0x7020…7040 20 20 20 20 20 20 20 20 20 20 48 6f 6d 65 20 70 6f 73 69 74 69 6f 6e 2e 0d 0a 0d 0a 20 20 20 20 ┆ Home position. ┆ 0x7040…7060 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4e 65 77 20 6c 69 6e 65 20 28 72 65 74 75 ┆ New line (retu┆ 0x7060…7080 72 6e 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 a1 a1 ┆rn). ┆ 0x7080…70a0 e1 b0 4b 65 79 73 20 74 6f 20 65 64 69 74 20 74 68 65 20 64 61 74 61 e1 3a 0d 0a 0d 0a 20 20 20 ┆ Keys to edit the data : ┆ 0x70a0…70c0 20 20 20 20 20 20 49 4e 53 20 4d 4f 44 45 20 20 20 20 20 49 6e 73 65 72 74 20 43 68 61 72 61 63 ┆ INS MODE Insert Charac┆ 0x70c0…70e0 74 65 72 20 4d 6f 64 65 20 6b 65 79 2c 20 77 69 74 68 20 6c 61 6d 70 2e 0d 0a 0d 0a 20 20 20 20 ┆ter Mode key, with lamp. ┆ 0x70e0…7100 20 20 20 20 20 84 49 4e 53 20 4c 49 4e 45 20 20 20 20 20 49 6e 73 65 72 74 20 4c 69 6e 65 20 6b ┆ INS LINE Insert Line k┆ 0x7100…7120 65 79 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 44 45 4c 20 43 48 41 52 20 20 20 20 20 44 65 6c ┆ey. DEL CHAR Del┆ 0x7120…7140 65 74 65 20 43 68 61 72 61 63 74 65 72 20 6b 65 79 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 44 ┆ete Character key. D┆ 0x7140…7160 45 4c 20 4c 49 4e 45 20 20 20 20 20 44 65 6c 65 74 65 20 4c 69 6e 65 20 6b 65 79 2e 0d 0a 0d 0a ┆EL LINE Delete Line key. ┆ 0x7160…7180 20 20 20 20 20 20 20 20 20 45 52 41 53 45 20 46 49 45 4c 44 20 20 45 72 61 73 65 20 74 6f 20 45 ┆ ERASE FIELD Erase to E┆ 0x7180…71a0 6e 64 20 6f 66 20 46 69 65 6c 64 20 6b 65 79 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 45 52 41 ┆nd of Field key. ERA┆ 0x71a0…71c0 53 45 20 49 4e 50 55 54 20 20 45 72 61 73 65 20 49 6e 70 75 74 20 46 69 65 6c 64 73 20 6b 65 79 ┆SE INPUT Erase Input Fields key┆ 0x71c0…71e0 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 46 4d 20 20 20 20 20 20 20 20 20 20 20 46 69 65 6c 64 ┆. FM Field┆ 0x71e0…7200 20 4d 61 72 6b 20 6b 65 79 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 44 55 50 20 20 20 20 20 20 ┆ Mark key. DUP ┆ 0x7200…7220 (57,) 20 20 20 20 44 75 70 6c 69 63 61 74 65 20 6b 65 79 2e 0d 0a 20 20 20 20 20 20 20 20 20 0d 0a 20 ┆ Duplicate key. ┆ 0x7220…7240 20 20 20 20 20 20 20 20 4d 41 52 4b 20 20 20 20 20 20 20 20 20 84 4d 61 72 6b 20 53 74 72 69 6e ┆ MARK Mark Strin┆ 0x7240…7260 67 20 6b 65 79 2e 0d 0a 20 0d 0a 20 20 20 20 20 20 20 20 20 4d 4f 56 45 20 20 20 20 20 20 20 20 ┆g key. MOVE ┆ 0x7260…7280 20 84 4d 6f 76 65 20 53 74 72 69 6e 67 20 6b 65 79 2e 0d 0a 0d 0a 0d 0a a1 b0 32 2e 33 20 20 20 ┆ Move String key. 2.3 ┆ 0x7280…72a0 20 20 20 47 65 6e 65 72 61 6c 20 4f 70 65 72 61 74 69 6e 67 20 49 6e 66 6f 72 6d 61 74 69 6f 6e ┆ General Operating Information┆ 0x72a0…72c0 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 69 73 20 73 65 63 74 69 6f 6e 20 63 6f 6e 74 61 ┆ This section conta┆ 0x72c0…72e0 69 6e 73 20 69 6e 66 6f 72 6d 61 74 69 6f 6e 20 65 73 73 65 6e 74 69 61 6c 20 74 6f 20 61 6e 20 ┆ins information essential to an ┆ 0x72e0…7300 75 6e 64 65 72 80 0a 19 89 80 80 73 74 61 6e 64 69 6e 67 20 6f 66 20 74 68 65 20 70 72 6f 63 65 ┆under standing of the proce┆ 0x7300…7320 64 75 72 65 73 20 64 65 73 63 72 69 62 65 64 20 69 6e 20 43 68 61 70 74 65 72 20 33 2e 0d 0a 0d ┆dures described in Chapter 3. ┆ 0x7320…7340 0a 0d 0a a1 b0 32 2e 33 2e 31 20 20 20 20 84 50 6f 77 65 72 20 4f 6e 2f 4f 66 66 0d 0a 0d 0a 20 ┆ 2.3.1 Power On/Off ┆ 0x7340…7360 20 20 20 20 20 20 20 20 84 57 69 74 68 20 74 68 65 20 70 6f 77 65 72 20 63 61 62 6c 65 20 70 72 ┆ With the power cable pr┆ 0x7360…7380 6f 70 65 72 6c 79 20 63 6f 6e 6e 65 63 74 65 64 2c 20 74 68 65 20 70 6f 77 65 72 20 0a 19 89 80 ┆operly connected, the power ┆ 0x7380…73a0 80 73 77 69 74 63 68 20 63 61 6e 20 62 65 20 70 72 65 73 73 65 64 20 74 6f 20 61 70 70 6c 79 20 ┆ switch can be pressed to apply ┆ 0x73a0…73c0 70 6f 77 65 72 20 74 6f 20 74 68 65 20 64 69 73 70 6c 61 79 20 75 6e 69 74 20 0a 19 89 80 80 61 ┆power to the display unit a┆ 0x73c0…73e0 6e 64 20 74 68 65 20 63 6f 6e 6e 65 63 74 65 64 20 6b 65 79 62 6f 61 72 64 20 20 28 32 2e 31 2e ┆nd the connected keyboard (2.1.┆ 0x73e0…7400 32 2e 31 20 29 2e 20 54 68 65 20 70 6f 77 65 72 20 73 77 69 74 63 68 20 0a 19 89 80 80 77 69 6c ┆2.1 ). The power switch wil┆ 0x7400…7420 (58,) 6c 20 6c 69 67 68 74 2c 20 61 6e 64 20 72 65 6d 61 69 6e 20 6c 69 74 20 61 73 20 6c 6f 6e 67 20 ┆l light, and remain lit as long ┆ 0x7420…7440 61 73 20 74 68 65 20 70 6f 77 65 72 20 69 73 20 6f 6e 2e 20 0a 19 89 80 80 50 6f 77 65 72 20 69 ┆as the power is on. Power i┆ 0x7440…7460 73 20 72 65 6d 6f 76 65 64 20 66 72 6f 6d 20 74 68 65 20 64 69 73 70 6c 61 79 20 75 6e 69 74 20 ┆s removed from the display unit ┆ 0x7460…7480 61 6e 64 20 6b 65 79 62 6f 61 72 64 20 62 79 20 0a 19 89 80 80 70 72 65 73 73 69 6e 67 20 74 68 ┆and keyboard by pressing th┆ 0x7480…74a0 65 20 73 61 6d 65 20 73 77 69 74 63 68 20 61 67 61 69 6e 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 ┆e same switch again. ┆ 0x74a0…74c0 20 84 54 68 65 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 6f 66 20 70 6f 77 65 72 20 77 69 6c 6c 20 ┆ The application of power will ┆ 0x74c0…74e0 63 61 75 73 65 20 61 20 74 65 72 6d 69 6e 61 6c 20 72 65 73 65 74 20 0a 19 89 80 80 28 32 2e 33 ┆cause a terminal reset (2.3┆ 0x74e0…7500 2e 32 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 72 65 70 6c 61 63 65 6d 65 6e ┆.2). The replacemen┆ 0x7500…7520 74 20 6f 66 20 74 68 65 20 66 75 73 65 20 69 6e 20 74 68 65 20 70 6f 77 65 72 20 63 61 62 6c 65 ┆t of the fuse in the power cable┆ 0x7520…7540 20 63 6f 6e 6e 65 63 74 6f 72 20 0a 19 89 80 80 28 32 2e 31 2e 32 2e 31 20 29 20 69 73 20 64 65 ┆ connector (2.1.2.1 ) is de┆ 0x7540…7560 73 63 72 69 62 65 64 20 75 6e 64 65 72 20 6d 61 69 6e 74 65 6e 61 6e 63 65 20 69 6e 20 43 68 61 ┆scribed under maintenance in Cha┆ 0x7560…7580 70 74 65 72 20 34 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 44 69 73 6b 20 73 79 73 74 65 6d ┆pter 4. Disk system┆ 0x7580…75a0 73 20 61 6e 64 20 70 72 69 6e 74 65 72 73 20 61 72 65 20 70 6f 77 65 72 65 64 20 6f 6e 20 61 6e ┆s and printers are powered on an┆ 0x75a0…75c0 64 20 6f 66 66 20 73 65 70 61 80 0a 19 89 80 80 72 61 74 65 6c 79 20 28 32 2e 31 2e 32 2e 32 20 ┆d off sepa rately (2.1.2.2 ┆ 0x75c0…75e0 61 6e 64 20 32 2e 31 2e 32 2e 33 29 2e 0d 0a 0d 0a 0d 0a 8c 83 d0 0a a1 b0 32 2e 33 2e 32 20 20 ┆and 2.1.2.3). 2.3.2 ┆ 0x75e0…7600 20 20 52 65 73 65 74 20 61 6e 64 20 53 65 6c 66 74 65 73 74 0d 0a 0d 0a 20 20 20 20 20 20 20 20 ┆ Reset and Selftest ┆ 0x7600…7620 (59,) 20 84 54 68 65 20 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 20 69 73 20 72 65 73 65 74 20 77 68 ┆ The RC855 terminal is reset wh┆ 0x7620…7640 65 6e 20 70 6f 77 65 72 20 69 73 20 61 70 70 6c 69 65 64 2c 20 61 6e 64 20 0a 19 89 80 80 74 68 ┆en power is applied, and th┆ 0x7640…7660 65 72 65 61 66 74 65 72 20 77 68 65 6e 65 76 65 72 20 74 68 65 20 72 65 73 65 74 20 62 75 74 74 ┆ereafter whenever the reset butt┆ 0x7660…7680 6f 6e 20 28 32 2e 31 2e 32 2e 31 29 20 69 73 20 0a 19 89 80 80 70 72 65 73 73 65 64 2e 20 57 68 ┆on (2.1.2.1) is pressed. Wh┆ 0x7680…76a0 65 6e 20 63 65 72 74 61 69 6e 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 73 20 ┆en certain application programs ┆ 0x76a0…76c0 61 72 65 20 72 75 6e 6e 69 6e 67 2c 20 0a 19 89 80 80 65 2e 67 2e 20 74 68 65 20 52 43 38 35 35 ┆are running, e.g. the RC855┆ 0x76c0…76e0 20 49 42 4d 20 33 32 37 30 20 42 53 43 20 65 6d 75 6c 61 74 6f 72 2c 20 74 68 65 20 74 65 72 6d ┆ IBM 3270 BSC emulator, the term┆ 0x76e0…7700 69 6e 61 6c 20 63 61 6e 20 0a 19 89 80 80 61 6c 73 6f 20 62 65 20 72 65 73 65 74 20 62 79 20 70 ┆inal can also be reset by p┆ 0x7700…7720 72 65 73 73 69 6e 67 20 74 68 65 20 43 54 52 4c 20 61 6e 64 20 43 4c 45 41 52 20 6b 65 79 73 20 ┆ressing the CTRL and CLEAR keys ┆ 0x7720…7740 0a 19 89 80 80 28 32 2e 32 2e 34 2e 31 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4f 6e 20 ┆ (2.2.4.1). On ┆ 0x7740…7760 62 65 69 6e 67 20 72 65 73 65 74 2c 20 74 68 65 20 74 65 72 6d 69 6e 61 6c 20 61 75 74 6f 6d 61 ┆being reset, the terminal automa┆ 0x7760…7780 74 69 63 61 6c 6c 79 20 65 78 65 63 75 74 65 73 20 61 20 0a 19 89 80 80 62 75 69 6c 74 2d 69 6e ┆tically executes a built-in┆ 0x7780…77a0 20 73 65 6c 66 74 65 73 74 2c 20 63 61 6c 6c 65 64 20 74 68 65 20 a1 70 6f 77 65 72 2d 75 70 20 ┆ selftest, called the power-up ┆ 0x77a0…77c0 73 65 6c 66 74 65 73 74 e1 2c 20 77 68 69 63 68 20 0a 19 89 80 80 63 6f 6d 70 72 69 73 65 73 20 ┆selftest , which comprises ┆ 0x77c0…77e0 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 2d 20 50 52 ┆the following: - PR┆ 0x77e0…7800 4f 4d 20 28 70 72 6f 67 72 61 6d 6d 61 62 6c 65 20 72 65 61 64 2d 6f 6e 6c 79 20 6d 65 6d 6f 72 ┆OM (programmable read-only memor┆ 0x7800…7820 (60,) 79 29 20 63 68 65 63 6b 73 75 6d 20 74 65 73 74 3b 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 2d ┆y) checksum test; -┆ 0x7820…7840 20 52 41 4d 20 28 72 61 6e 64 6f 6d 2d 61 63 63 65 73 73 20 6d 65 6d 6f 72 79 29 20 6d 65 6d 6f ┆ RAM (random-access memory) memo┆ 0x7840…7860 72 79 20 74 65 73 74 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 49 66 20 6e 6f 20 65 72 72 6f ┆ry test. If no erro┆ 0x7860…7880 72 20 69 73 20 64 65 74 65 63 74 65 64 20 62 79 20 74 68 65 20 70 6f 77 65 72 2d 75 70 20 73 65 ┆r is detected by the power-up se┆ 0x7880…78a0 6c 66 74 65 73 74 2c 20 61 6e 20 0a 19 89 80 80 52 43 38 35 35 20 61 70 70 6c 69 63 61 74 69 6f ┆lftest, an RC855 applicatio┆ 0x78a0…78c0 6e 20 70 72 6f 67 72 61 6d 20 69 73 20 6c 6f 61 64 65 64 20 69 6e 74 6f 20 74 68 65 20 52 41 4d ┆n program is loaded into the RAM┆ 0x78c0…78e0 20 6f 66 20 74 68 65 20 0a 19 89 80 80 74 65 72 6d 69 6e 61 6c 20 28 32 2e 33 2e 33 29 2e 0d 0a ┆ of the terminal (2.3.3). ┆ 0x78e0…7900 0d 0a 20 20 20 20 20 20 20 20 20 84 54 6f 20 70 65 72 66 6f 72 6d 20 61 20 74 68 6f 72 6f 75 67 ┆ To perform a thoroug┆ 0x7900…7920 68 20 63 68 65 63 6b 20 6f 66 20 74 68 65 20 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 20 69 6e ┆h check of the RC855 terminal in┆ 0x7920…7940 20 0a 19 89 80 80 61 70 70 72 6f 78 69 6d 61 74 65 6c 79 20 74 77 6f 20 6d 69 6e 75 74 65 73 2c ┆ approximately two minutes,┆ 0x7940…7960 20 74 68 65 20 6f 70 65 72 61 74 6f 72 20 63 61 6e 20 72 75 6e 20 74 68 65 20 0a 19 89 80 80 a1 ┆ the operator can run the ┆ 0x7960…7980 65 78 74 65 6e 64 65 64 20 73 65 6c 66 74 65 73 74 e1 2c 20 61 73 20 64 65 73 63 72 69 62 65 64 ┆extended selftest , as described┆ 0x7980…79a0 20 69 6e 20 41 70 70 65 6e 64 69 78 20 42 2e 0d 0a 0d 0a 0d 0a a1 b0 32 2e 33 2e 33 20 20 20 20 ┆ in Appendix B. 2.3.3 ┆ 0x79a0…79c0 50 72 6f 67 72 61 6d 20 4c 6f 61 64 69 6e 67 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4f 6e 20 ┆Program Loading On ┆ 0x79c0…79e0 73 75 63 63 65 73 73 66 75 6c 20 63 6f 6d 70 6c 65 74 69 6f 6e 20 6f 66 20 74 68 65 20 70 6f 77 ┆successful completion of the pow┆ 0x79e0…7a00 65 72 2d 75 70 20 73 65 6c 66 74 65 73 74 2c 20 61 6e 20 0a 19 89 80 80 52 43 38 35 35 20 61 70 ┆er-up selftest, an RC855 ap┆ 0x7a00…7a20 (61,) 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 20 69 73 20 6c 6f 61 64 65 64 20 66 72 6f 6d ┆plication program is loaded from┆ 0x7a20…7a40 20 74 68 65 20 73 70 65 63 69 66 69 65 64 20 0a 19 89 80 80 6c 6f 61 64 20 6d 65 64 69 75 6d 2c ┆ the specified load medium,┆ 0x7a40…7a60 20 77 68 69 63 68 20 6d 75 73 74 2c 20 6f 66 20 63 6f 75 72 73 65 2c 20 62 65 20 70 72 65 73 65 ┆ which must, of course, be prese┆ 0x7a60…7a80 6e 74 20 69 6e 20 6f 72 64 65 72 20 0a 19 89 80 80 66 6f 72 20 6c 6f 61 64 69 6e 67 20 74 6f 20 ┆nt in order for loading to ┆ 0x7a80…7aa0 74 61 6b 65 20 70 6c 61 63 65 2e 20 20 49 66 20 6e 6f 20 65 72 72 6f 72 20 6f 63 63 75 72 73 20 ┆take place. If no error occurs ┆ 0x7aa0…7ac0 64 75 72 69 6e 67 20 0a 19 89 80 80 70 72 6f 67 72 61 6d 20 6c 6f 61 64 69 6e 67 2c 20 74 68 65 ┆during program loading, the┆ 0x7ac0…7ae0 20 52 43 38 35 35 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 20 69 73 20 73 74 ┆ RC855 application program is st┆ 0x7ae0…7b00 61 72 80 74 2d 0a 19 89 80 80 65 64 2c 20 77 68 65 72 65 75 70 6f 6e 20 69 74 20 69 64 65 6e 74 ┆ar t- ed, whereupon it ident┆ 0x7b00…7b20 69 66 69 65 73 20 69 74 73 65 6c 66 20 6f 6e 20 74 68 65 20 64 69 73 70 6c 61 79 20 0a 19 89 80 ┆ifies itself on the display ┆ 0x7b20…7b40 80 73 63 72 65 65 6e 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 72 65 65 20 6b 69 6e 64 ┆ screen. Three kind┆ 0x7b40…7b60 73 20 6f 66 20 6d 65 64 69 61 20 61 72 65 20 75 73 65 64 20 66 6f 72 20 74 68 65 20 6c 6f 61 64 ┆s of media are used for the load┆ 0x7b60…7b80 69 6e 67 20 6f 66 20 52 43 38 35 35 20 0a 19 89 80 80 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 ┆ing of RC855 application pr┆ 0x7b80…7ba0 6f 67 72 61 6d 73 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 49 6e 74 65 72 6e 61 ┆ograms: . Interna┆ 0x7ba0…7bc0 6c 20 4d 65 6d 6f 72 79 20 42 6f 61 72 64 73 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 41 ┆l Memory Boards A┆ 0x7bc0…7be0 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 73 20 61 72 65 20 6c 6f 61 64 65 64 20 61 ┆pplication programs are loaded a┆ 0x7be0…7c00 75 74 6f 6d 61 74 69 63 61 6c 6c 79 20 66 72 6f 6d 20 0a 19 8b 80 80 50 52 4f 4d 73 20 6f 6e 20 ┆utomatically from PROMs on ┆ 0x7c00…7c20 (62,) 74 68 65 20 43 50 55 20 28 63 65 6e 74 72 61 6c 20 70 72 6f 63 65 73 73 69 6e 67 20 75 6e 69 74 ┆the CPU (central processing unit┆ 0x7c20…7c40 20 29 20 63 69 72 63 75 69 74 20 0a 19 8b 80 80 62 6f 61 72 64 20 6f 72 20 66 72 6f 6d 20 50 52 ┆ ) circuit board or from PR┆ 0x7c40…7c60 4f 4d 73 20 6f 6e 20 61 20 73 70 65 63 69 61 6c 20 63 69 72 63 75 69 74 20 62 6f 61 72 64 2e 20 ┆OMs on a special circuit board. ┆ 0x7c60…7c80 54 68 65 73 65 20 0a 19 8b 80 80 50 52 4f 4d 73 20 61 72 65 20 63 61 6c 6c 65 64 20 72 65 73 70 ┆These PROMs are called resp┆ 0x7c80…7ca0 65 63 74 69 76 65 6c 79 20 4d 49 43 20 50 52 4f 4d 73 20 61 6e 64 20 49 4d 4c 20 50 52 4f 4d 73 ┆ectively MIC PROMs and IML PROMs┆ 0x7ca0…7cc0 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 44 69 73 6b 20 53 79 73 74 65 6d 73 0d ┆. . Disk Systems ┆ 0x7cc0…7ce0 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 54 68 65 20 43 50 2f 4d 20 6f 70 65 72 61 74 69 6e ┆ The CP/M operatin┆ 0x7ce0…7d00 67 20 73 79 73 74 65 6d 20 69 73 20 6c 6f 61 64 65 64 20 66 72 6f 6d 20 61 20 63 6f 6e 6e 65 63 ┆g system is loaded from a connec┆ 0x7d00…7d20 74 65 64 20 0a 19 8b 80 80 64 69 73 6b 65 74 74 65 20 64 72 69 76 65 20 6f 72 20 68 61 72 64 20 ┆ted diskette drive or hard ┆ 0x7d20…7d40 64 69 73 6b 20 64 72 69 76 65 2e 20 50 72 6f 67 72 61 6d 20 6c 6f 61 64 69 6e 67 20 0a 19 8b 80 ┆disk drive. Program loading ┆ 0x7d40…7d60 80 66 72 6f 6d 20 64 69 73 6b 65 74 74 65 20 69 73 20 64 65 73 63 72 69 62 65 64 20 69 6e 20 64 ┆ from diskette is described in d┆ 0x7d60…7d80 65 74 61 69 6c 20 69 6e 20 28 33 29 2c 20 28 34 29 2c 20 28 35 29 2c 20 0a 19 8b 80 80 28 36 29 ┆etail in (3), (4), (5), (6)┆ 0x7d80…7da0 2c 20 61 6e 64 20 28 37 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 52 63 43 69 ┆, and (7). . RcCi┆ 0x7da0…7dc0 72 63 75 69 74 20 20 28 4c 6f 63 61 6c 20 54 65 72 6d 69 6e 61 6c 20 4e 65 74 77 6f 72 6b 29 0d ┆rcuit (Local Terminal Network) ┆ 0x7dc0…7de0 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 46 6f 6c 6c 6f 77 69 6e 67 20 74 68 65 20 72 65 63 ┆ Following the rec┆ 0x7de0…7e00 65 69 70 74 20 6f 66 20 61 20 6d 65 6e 75 20 66 72 6f 6d 20 74 68 65 20 52 43 38 39 30 20 63 6f ┆eipt of a menu from the RC890 co┆ 0x7e00…7e20 (63,) 6e 74 72 6f 6c 20 0a 19 8b 80 80 75 6e 69 74 2c 20 61 20 64 65 66 61 75 6c 74 20 61 70 70 6c 69 ┆ntrol unit, a default appli┆ 0x7e20…7e40 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 20 69 73 20 61 75 74 6f 6d 61 74 69 63 61 6c 6c 79 20 ┆cation program is automatically ┆ 0x7e40…7e60 0a 8c 83 c8 0a 19 8b 80 80 6c 6f 61 64 65 64 20 6f 72 20 61 6e 20 61 70 70 6c 69 63 61 74 69 6f ┆ loaded or an applicatio┆ 0x7e60…7e80 6e 20 70 72 6f 67 72 61 6d 20 73 65 6c 65 63 74 65 64 20 66 72 6f 6d 20 74 68 65 20 0a 19 8b 80 ┆n program selected from the ┆ 0x7e80…7ea0 80 6d 65 6e 75 20 69 73 20 6c 6f 61 64 65 64 2e 20 54 68 69 73 20 70 72 6f 67 72 61 6d 20 6d 61 ┆ menu is loaded. This program ma┆ 0x7ea0…7ec0 79 20 62 65 20 6c 6f 61 64 65 64 20 64 6f 77 6e 6c 69 6e 65 20 0a 19 8b 80 80 66 72 6f 6d 20 74 ┆y be loaded downline from t┆ 0x7ec0…7ee0 68 65 20 52 43 38 39 30 20 6f 72 20 6c 6f 63 61 6c 6c 79 20 66 72 6f 6d 20 61 20 64 69 73 6b 20 ┆he RC890 or locally from a disk ┆ 0x7ee0…7f00 73 79 73 74 65 6d 2e 20 46 6f 72 20 61 20 0a 19 8b 80 80 64 65 74 61 69 6c 65 64 20 64 65 73 63 ┆system. For a detailed desc┆ 0x7f00…7f20 72 69 70 74 69 6f 6e 2c 20 73 65 65 20 28 31 32 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 ┆ription, see (12). ┆ 0x7f20…7f40 54 68 65 20 22 73 70 65 63 69 66 69 65 64 20 6c 6f 61 64 20 6d 65 64 69 75 6d 22 20 69 73 20 65 ┆The "specified load medium" is e┆ 0x7f40…7f60 69 74 68 65 72 20 74 68 65 20 6d 65 64 69 75 6d 20 64 65 66 69 6e 65 64 20 0a 19 89 80 80 62 79 ┆ither the medium defined by┆ 0x7f60…7f80 20 74 68 65 20 4e 56 4d 20 70 61 72 61 6d 65 74 65 72 20 4c 44 20 6f 72 20 74 68 65 20 6d 65 64 ┆ the NVM parameter LD or the med┆ 0x7f80…7fa0 69 75 6d 20 64 65 66 69 6e 65 64 20 62 79 20 74 68 65 20 0a 19 89 80 80 52 43 38 35 35 20 6f 70 ┆ium defined by the RC855 op┆ 0x7fa0…7fc0 65 72 61 74 6f 72 2e 0d 0a 0d 0a 0d 0a a1 b0 32 2e 33 2e 33 2e 31 20 20 4d 65 64 69 75 6d 20 44 ┆erator. 2.3.3.1 Medium D┆ 0x7fc0…7fe0 65 66 69 6e 65 64 20 62 79 20 4e 56 4d 20 50 61 72 61 6d 65 74 65 72 0d 0a 0d 0a 20 20 20 20 20 ┆efined by NVM Parameter ┆ 0x7fe0…8000 20 20 20 20 84 54 68 65 20 4e 56 4d 20 70 61 72 61 6d 65 74 65 72 20 4c 44 20 28 6c 6f 61 64 20 ┆ The NVM parameter LD (load ┆ 0x8000…8020 (64,) 64 65 76 69 63 65 29 20 6d 61 79 20 61 73 73 75 6d 65 20 61 20 76 61 6c 75 65 20 69 6e 20 0a 19 ┆device) may assume a value in ┆ 0x8020…8040 89 80 80 74 68 65 20 69 6e 74 65 72 76 61 6c 20 30 2e 2e 31 35 2e 20 54 68 69 73 20 76 61 6c 75 ┆ the interval 0..15. This valu┆ 0x8040…8060 65 20 64 65 66 69 6e 65 73 20 74 68 65 20 6d 65 64 69 75 6d 20 66 72 6f 6d 20 0a 19 89 80 80 77 ┆e defines the medium from w┆ 0x8060…8080 68 69 63 68 20 74 68 65 20 70 72 6f 67 72 61 6d 20 69 73 20 6c 6f 61 64 65 64 20 77 68 65 6e 20 ┆hich the program is loaded when ┆ 0x8080…80a0 74 68 65 20 74 65 72 6d 69 6e 61 6c 20 69 73 20 72 65 73 65 74 2e 20 0a 19 89 80 80 49 66 20 74 ┆the terminal is reset. If t┆ 0x80a0…80c0 68 65 20 74 65 72 6d 69 6e 61 6c 20 61 6c 77 61 79 73 20 72 75 6e 73 20 74 68 65 20 49 42 4d 20 ┆he terminal always runs the IBM ┆ 0x80c0…80e0 33 32 37 30 20 42 53 43 20 65 6d 75 6c 61 74 6f 72 2c 20 0a 19 89 80 80 4c 44 20 6d 75 73 74 20 ┆3270 BSC emulator, LD must ┆ 0x80e0…8100 62 65 20 61 73 73 69 67 6e 65 64 20 74 68 65 20 76 61 6c 75 65 20 30 2e 20 4f 6c 64 65 72 20 76 ┆be assigned the value 0. Older v┆ 0x8100…8120 65 72 73 69 6f 6e 73 20 6f 66 20 74 68 65 20 0a 19 89 80 80 52 43 38 35 35 20 62 6f 6f 74 6c 6f ┆ersions of the RC855 bootlo┆ 0x8120…8140 61 64 20 70 72 6f 67 72 61 6d 20 64 6f 20 6e 6f 74 20 75 73 65 20 74 68 65 20 4c 44 20 70 61 72 ┆ad program do not use the LD par┆ 0x8140…8160 61 6d 65 74 65 72 2e 20 4d 6f 72 65 20 0a 19 89 80 80 72 65 63 65 6e 74 20 76 65 72 73 69 6f 6e ┆ameter. More recent version┆ 0x8160…8180 73 20 6f 66 20 74 68 65 20 62 6f 6f 74 6c 6f 61 64 65 72 20 77 69 6c 6c 20 69 6e 74 65 72 70 72 ┆s of the bootloader will interpr┆ 0x8180…81a0 65 74 20 74 68 65 20 0a 19 89 80 80 76 61 6c 75 65 20 6f 66 20 74 68 65 20 70 61 72 61 6d 65 74 ┆et the value of the paramet┆ 0x81a0…81c0 65 72 20 61 73 20 66 6f 6c 6c 6f 77 73 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 4c 44 20 3d 20 ┆er as follows: LD = ┆ 0x81c0…81e0 30 20 3a 20 84 53 74 61 6e 64 61 72 64 20 6d 6f 64 65 2c 20 69 2e 65 2e 20 6c 6f 61 64 69 6e 67 ┆0 : Standard mode, i.e. loading┆ 0x81e0…8200 20 61 73 20 69 6e 20 6f 6c 64 65 72 20 76 65 72 80 0a 19 92 80 80 73 69 6f 6e 73 2e 0d 0a 20 20 ┆ as in older ver sions. ┆ 0x8200…8220 (65,) 20 20 20 20 20 20 20 4c 44 20 3d 20 31 20 3a 20 52 63 43 69 72 63 75 69 74 20 64 65 66 61 75 6c ┆ LD = 1 : RcCircuit defaul┆ 0x8220…8240 74 20 6d 6f 64 65 20 28 32 2e 33 2e 33 29 2e 0d 0a 20 20 20 20 20 20 20 20 20 84 4c 44 20 3d 20 ┆t mode (2.3.3). LD = ┆ 0x8240…8260 32 20 3a 20 52 63 43 69 72 63 75 69 74 20 6d 65 6e 75 20 6d 6f 64 65 20 28 32 2e 33 2e 33 29 2e ┆2 : RcCircuit menu mode (2.3.3).┆ 0x8260…8280 0d 0a 20 20 20 20 20 20 20 20 20 4c 44 20 3d 20 33 20 3a 20 50 52 4f 4d 20 6d 6f 64 65 2c 20 69 ┆ LD = 3 : PROM mode, i┆ 0x8280…82a0 2e 65 2e 20 6c 6f 61 64 69 6e 67 20 66 72 6f 6d 20 4d 49 43 20 50 52 4f 4d 73 2e 0d 0a 20 20 20 ┆.e. loading from MIC PROMs. ┆ 0x82a0…82c0 20 20 20 20 20 20 4c 44 20 3d 20 34 20 3a 20 84 48 61 72 64 20 64 69 73 6b 20 6d 6f 64 65 2c 20 ┆ LD = 4 : Hard disk mode, ┆ 0x82c0…82e0 69 2e 65 2e 20 6c 6f 61 64 69 6e 67 20 66 72 6f 6d 20 61 20 68 61 72 64 20 64 69 73 6b 20 0a 19 ┆i.e. loading from a hard disk ┆ 0x82e0…8300 92 80 80 64 72 69 76 65 2e 0d 0a 20 20 20 20 20 20 20 20 20 4c 44 20 3d 20 35 20 3a 20 84 53 74 ┆ drive. LD = 5 : St┆ 0x8300…8320 61 6e 64 61 72 64 20 6d 6f 64 65 2c 20 69 2e 65 2e 20 6c 6f 61 64 69 6e 67 20 61 73 20 69 6e 20 ┆andard mode, i.e. loading as in ┆ 0x8320…8340 6f 6c 64 65 72 20 76 65 72 80 0a 19 92 80 80 73 69 6f 6e 73 2e 0d 0a 20 20 20 20 20 20 20 20 20 ┆older ver sions. ┆ 0x8340…8360 4c 44 20 3d 20 36 20 3a 20 84 44 69 73 6b 65 74 74 65 20 6d 6f 64 65 2c 20 69 2e 65 2e 20 6c 6f ┆LD = 6 : Diskette mode, i.e. lo┆ 0x8360…8380 61 64 69 6e 67 20 66 72 6f 6d 20 61 20 64 69 73 6b 65 74 74 65 20 0a 19 92 80 80 64 72 69 76 65 ┆ading from a diskette drive┆ 0x8380…83a0 2e 0d 0a 20 20 20 20 20 20 20 20 20 4c 44 20 3d 20 37 20 3a 20 49 6d 61 67 65 2d 6c 6f 61 64 20 ┆. LD = 7 : Image-load ┆ 0x83a0…83c0 6d 6f 64 65 2c 20 69 2e 65 2e 20 6c 6f 61 64 69 6e 67 20 66 72 6f 6d 20 49 4d 4c 20 50 52 4f 4d ┆mode, i.e. loading from IML PROM┆ 0x83c0…83e0 73 2e 0d 0a 20 20 20 20 20 20 20 20 20 4c 44 20 3e 20 37 20 3a 20 4e 6f 74 20 64 65 66 69 6e 65 ┆s. LD > 7 : Not define┆ 0x83e0…8400 64 2e 0d 0a 0d 0a 0d 0a a1 b0 32 2e 33 2e 33 2e 32 20 20 4d 65 64 69 75 6d 20 44 65 66 69 6e 65 ┆d. 2.3.3.2 Medium Define┆ 0x8400…8420 (66,) 64 20 62 79 20 4f 70 65 72 61 74 6f 72 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 52 ┆d by Operator The R┆ 0x8420…8440 43 38 35 35 20 6f 70 65 72 61 74 6f 72 20 6d 61 79 20 72 65 64 65 66 69 6e 65 20 74 68 65 20 70 ┆C855 operator may redefine the p┆ 0x8440…8460 72 6f 67 72 61 6d 20 6c 6f 61 64 20 6d 65 64 69 75 6d 2c 20 0a 19 89 80 80 69 2e 65 2e 20 6f 76 ┆rogram load medium, i.e. ov┆ 0x8460…8480 65 72 72 69 64 65 20 74 68 65 20 4c 44 20 70 61 72 61 6d 65 74 65 72 2c 20 62 79 20 68 6f 6c 64 ┆erride the LD parameter, by hold┆ 0x8480…84a0 69 6e 67 20 6f 6e 65 20 6f 66 20 73 65 76 65 80 0a 19 89 80 80 72 61 6c 20 6b 65 79 73 20 64 65 ┆ing one of seve ral keys de┆ 0x84a0…84c0 70 72 65 73 73 65 64 20 77 68 69 6c 65 20 74 68 65 20 74 65 72 6d 69 6e 61 6c 20 65 78 65 63 75 ┆pressed while the terminal execu┆ 0x84c0…84e0 74 65 73 20 74 68 65 20 0a 19 89 80 80 70 6f 77 65 72 2d 75 70 20 73 65 6c 66 74 65 73 74 2e 20 ┆tes the power-up selftest. ┆ 0x84e0…8500 54 68 69 73 20 69 73 20 72 65 66 65 72 72 65 64 20 74 6f 20 61 73 20 a1 61 6c 74 65 72 6e 61 74 ┆This is referred to as alternat┆ 0x8500…8520 69 76 65 20 0a 19 89 80 84 70 72 6f 67 72 61 6d 20 6c 6f 61 64 69 6e 67 e1 2e 0d 0a 0d 0a 20 20 ┆ive program loading . ┆ 0x8520…8540 20 20 20 20 20 20 20 84 a1 4b 65 79 e1 20 20 20 20 20 a1 4c 6f 61 64 69 6e 67 20 4d 6f 64 65 0d ┆ Key Loading Mode ┆ 0x8540…8560 0a 0d 0a 20 20 20 20 20 20 20 20 20 22 43 22 20 20 20 20 20 52 63 43 69 72 63 75 69 74 20 64 65 ┆ "C" RcCircuit de┆ 0x8560…8580 66 61 75 6c 74 20 6d 6f 64 65 0d 0a 20 20 20 20 20 20 20 20 20 22 4d 22 20 20 20 20 20 52 63 43 ┆fault mode "M" RcC┆ 0x8580…85a0 69 72 63 75 69 74 20 6d 65 6e 75 20 6d 6f 64 65 0d 0a 20 20 20 20 20 20 20 20 20 22 50 22 20 20 ┆ircuit menu mode "P" ┆ 0x85a0…85c0 20 20 20 50 52 4f 4d 20 6d 6f 64 65 0d 0a 20 20 20 20 20 20 20 20 20 22 44 22 20 20 20 20 20 48 ┆ PROM mode "D" H┆ 0x85c0…85e0 61 72 64 20 64 69 73 6b 20 6d 6f 64 65 20 0d 0a 20 20 20 20 20 20 20 20 20 22 46 22 20 20 20 20 ┆ard disk mode "F" ┆ 0x85e0…8600 20 44 69 73 6b 65 74 74 65 20 6d 6f 64 65 0d 0a 20 20 20 20 20 20 20 20 20 22 49 22 20 20 20 20 ┆ Diskette mode "I" ┆ 0x8600…8616 (67,) 20 49 6d 61 67 65 2d 6c 6f 61 64 20 6d 6f 64 65 0d 0a 0d 0a 0d 0a ┆ Image-load mode ┆ 0x8616…8619 FormFeed { 0x8616…8619 0c 83 b0 ┆ ┆ 0x8616…8619 } 0x8619…8620 0a a1 b0 32 2e 33 2e ┆ 2.3.┆ 0x8620…8640 33 2e 33 20 20 45 78 61 6d 70 6c 65 73 20 6f 66 20 4c 6f 61 64 20 4d 65 64 69 75 6d 20 53 70 65 ┆3.3 Examples of Load Medium Spe┆ 0x8640…8660 63 69 66 69 63 61 74 69 6f 6e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 70 72 6f 67 ┆cification The prog┆ 0x8660…8680 72 61 6d 20 6c 6f 61 64 20 6d 65 64 69 75 6d 20 66 6f 72 20 61 6e 20 52 43 38 35 35 20 a1 64 65 ┆ram load medium for an RC855 de┆ 0x8680…86a0 64 69 63 61 74 65 64 20 74 65 72 6d 69 6e 61 6c e1 20 0a 19 89 80 80 28 77 69 74 68 20 52 63 43 ┆dicated terminal (with RcC┆ 0x86a0…86c0 69 72 63 75 69 74 20 61 6e 64 20 6f 77 6e 20 68 6f 73 74 20 63 6f 6e 6e 65 63 74 69 6f 6e 73 29 ┆ircuit and own host connections)┆ 0x86c0…86e0 20 6d 69 67 68 74 20 62 65 20 0a 19 89 80 80 73 70 65 63 69 66 69 65 64 20 74 68 75 73 3a 0d 0a ┆ might be specified thus: ┆ 0x86e0…8700 0d 0a 20 20 20 20 20 20 20 20 20 4c 44 20 3d 20 31 20 3a 20 84 52 63 43 69 72 63 75 69 74 20 64 ┆ LD = 1 : RcCircuit d┆ 0x8700…8720 65 66 61 75 6c 74 20 6d 6f 64 65 3a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆efault mode: ┆ 0x8720…8740 84 54 68 65 20 52 43 38 35 35 20 69 73 20 70 72 6f 67 72 61 6d 6d 65 64 20 66 72 6f 6d 20 74 68 ┆ The RC855 is programmed from th┆ 0x8740…8760 65 20 52 43 38 39 30 20 63 6f 6e 74 72 6f 6c 20 0a 19 92 80 80 75 6e 69 74 20 61 73 20 61 6e 20 ┆e RC890 control unit as an ┆ 0x8760…8780 49 42 4d 20 33 32 37 30 20 44 69 73 70 6c 61 79 20 53 74 61 74 69 6f 6e 20 28 52 63 43 69 72 63 ┆IBM 3270 Display Station (RcCirc┆ 0x8780…87a0 75 69 74 20 0a 19 92 80 80 63 6f 6e 6e 65 63 74 69 6f 6e 20 74 6f 20 74 68 65 20 52 43 38 39 30 ┆uit connection to the RC890┆ 0x87a0…87c0 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 4c 44 20 3d 20 33 20 3a 20 50 52 4f 4d 20 6d 6f 64 ┆). LD = 3 : PROM mod┆ 0x87c0…87e0 65 3a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 54 68 65 20 52 43 38 35 35 ┆e: The RC855┆ 0x87e0…8800 20 69 73 20 70 72 6f 67 72 61 6d 6d 65 64 20 66 72 6f 6d 20 61 6e 20 69 6e 74 65 72 6e 61 6c 20 ┆ is programmed from an internal ┆ 0x8800…8820 (68,) 6d 65 6d 6f 72 79 20 0a 19 92 80 80 62 6f 61 72 64 20 28 4d 49 43 20 50 52 4f 4d 73 29 20 61 73 ┆memory board (MIC PROMs) as┆ 0x8820…8840 20 61 6e 20 49 42 4d 20 33 32 37 30 20 42 53 43 20 44 69 73 70 6c 61 79 20 0a 19 92 80 80 53 74 ┆ an IBM 3270 BSC Display St┆ 0x8840…8860 61 74 69 6f 6e 20 28 52 63 43 69 72 63 75 69 74 20 63 6f 6e 6e 65 63 74 69 6f 6e 20 74 6f 20 61 ┆ation (RcCircuit connection to a┆ 0x8860…8880 6e 20 52 43 38 35 35 20 0a 19 92 80 80 70 72 69 6d 61 72 79 20 74 65 72 6d 69 6e 61 6c 29 2e 0d ┆n RC855 primary terminal). ┆ 0x8880…88a0 0a 0d 0a 20 20 20 20 20 20 20 20 20 22 49 22 20 20 20 20 3a 20 49 6d 61 67 65 2d 6c 6f 61 64 20 ┆ "I" : Image-load ┆ 0x88a0…88c0 6d 6f 64 65 3a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 54 68 65 20 52 43 ┆mode: The RC┆ 0x88c0…88e0 38 35 35 20 69 73 20 70 72 6f 67 72 61 6d 6d 65 64 20 66 72 6f 6d 20 61 6e 20 69 6e 74 65 72 6e ┆855 is programmed from an intern┆ 0x88e0…8900 61 6c 20 6d 65 6d 6f 72 79 20 0a 19 92 80 80 62 6f 61 72 64 20 28 49 4d 4c 20 50 52 4f 4d 73 29 ┆al memory board (IML PROMs)┆ 0x8900…8920 20 61 73 20 61 20 54 54 59 20 74 65 72 6d 69 6e 61 6c 20 28 6f 77 6e 20 68 6f 73 74 20 0a 19 92 ┆ as a TTY terminal (own host ┆ 0x8920…8940 80 80 63 6f 6e 6e 65 63 74 69 6f 6e 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 ┆ connection). The ┆ 0x8940…8960 70 72 6f 67 72 61 6d 20 6c 6f 61 64 20 6d 65 64 69 75 6d 20 66 6f 72 20 61 6e 20 52 43 38 35 35 ┆program load medium for an RC855┆ 0x8960…8980 20 a1 77 6f 72 6b 20 73 74 61 74 69 6f 6e e1 20 28 77 69 74 68 20 0a 19 89 80 80 52 63 43 69 72 ┆ work station (with RcCir┆ 0x8980…89a0 63 75 69 74 20 61 6e 64 20 6f 77 6e 20 68 6f 73 74 20 63 6f 6e 6e 65 63 74 69 6f 6e 73 29 20 6d ┆cuit and own host connections) m┆ 0x89a0…89c0 69 67 68 74 20 62 65 20 73 70 65 63 69 66 69 65 64 20 0a 19 89 80 80 74 68 75 73 3a 0d 0a 0d 0a ┆ight be specified thus: ┆ 0x89c0…89e0 20 20 20 20 20 20 20 20 20 22 43 22 20 20 20 20 3a 20 84 52 63 43 69 72 63 75 69 74 20 64 65 66 ┆ "C" : RcCircuit def┆ 0x89e0…8a00 61 75 6c 74 20 6d 6f 64 65 3a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 54 ┆ault mode: T┆ 0x8a00…8a20 (69,) 68 65 20 52 43 38 35 35 20 69 73 20 70 72 6f 67 72 61 6d 6d 65 64 20 66 72 6f 6d 20 74 68 65 20 ┆he RC855 is programmed from the ┆ 0x8a20…8a40 52 43 38 39 30 20 63 6f 6e 74 72 6f 6c 20 0a 19 92 80 80 75 6e 69 74 20 61 73 20 61 6e 20 49 42 ┆RC890 control unit as an IB┆ 0x8a40…8a60 4d 20 33 32 37 30 20 44 69 73 70 6c 61 79 20 53 74 61 74 69 6f 6e 20 28 52 63 43 69 72 63 75 69 ┆M 3270 Display Station (RcCircui┆ 0x8a60…8a80 74 20 0a 19 92 80 80 63 6f 6e 6e 65 63 74 69 6f 6e 20 74 6f 20 74 68 65 20 52 43 38 39 30 29 2e ┆t connection to the RC890).┆ 0x8a80…8aa0 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 4c 44 20 3d 20 36 20 3a 20 44 69 73 6b 65 74 74 65 20 6d ┆ LD = 6 : Diskette m┆ 0x8aa0…8ac0 6f 64 65 3a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 54 68 65 20 52 43 38 ┆ode: The RC8┆ 0x8ac0…8ae0 35 35 20 69 73 20 6c 6f 61 64 65 64 20 66 72 6f 6d 20 61 20 63 6f 6e 6e 65 63 74 65 64 20 64 69 ┆55 is loaded from a connected di┆ 0x8ae0…8b00 73 6b 65 74 74 65 20 0a 19 92 80 80 64 72 69 76 65 20 77 69 74 68 20 74 68 65 20 43 50 2f 4d 20 ┆skette drive with the CP/M ┆ 0x8b00…8b20 6f 70 65 72 61 74 69 6e 67 20 73 79 73 74 65 6d 3b 20 74 68 65 20 0a 19 92 80 80 6f 70 65 72 61 ┆operating system; the opera┆ 0x8b20…8b40 74 6f 72 20 74 68 65 6e 20 64 65 63 69 64 65 73 20 68 6f 77 20 68 65 20 77 61 6e 74 73 20 74 6f ┆tor then decides how he wants to┆ 0x8b40…8b60 20 70 72 6f 67 72 61 6d 20 0a 19 92 80 80 74 68 65 20 52 43 38 35 35 20 62 79 20 73 65 6c 65 63 ┆ program the RC855 by selec┆ 0x8b60…8b80 74 69 6e 67 20 61 20 43 50 2f 4d 20 70 72 6f 67 72 61 6d 20 66 69 6c 65 2c 20 66 6f 72 20 0a 19 ┆ting a CP/M program file, for ┆ 0x8b80…8ba0 92 80 80 65 78 61 6d 70 6c 65 3a 20 49 42 4d 20 33 32 37 30 20 42 53 43 20 44 69 73 70 6c 61 79 ┆ example: IBM 3270 BSC Display┆ 0x8ba0…8bc0 20 53 74 61 74 69 6f 6e 20 0a 19 92 80 80 28 52 63 43 69 72 63 75 69 74 20 63 6f 6e 6e 65 63 74 ┆ Station (RcCircuit connect┆ 0x8bc0…8be0 69 6f 6e 20 74 6f 20 61 6e 20 52 43 38 35 35 20 70 72 69 6d 61 72 79 20 0a 19 92 80 80 74 65 72 ┆ion to an RC855 primary ter┆ 0x8be0…8c00 6d 69 6e 61 6c 29 2c 20 54 54 59 20 74 65 72 6d 69 6e 61 6c 20 28 6f 77 6e 20 68 6f 73 74 20 63 ┆minal), TTY terminal (own host c┆ 0x8c00…8c20 (70,) 6f 6e 6e 65 63 74 69 6f 6e 29 2c 20 0a 19 92 80 80 6f 72 20 77 6f 72 64 20 70 72 6f 63 65 73 73 ┆onnection), or word process┆ 0x8c20…8c40 6f 72 20 28 6c 6f 63 61 6c 20 61 70 70 6c 69 63 61 74 69 6f 6e 29 2e 0d 0a 0d 0a 0d 0a a1 b0 32 ┆or (local application). 2┆ 0x8c40…8c60 2e 33 2e 34 20 20 20 20 53 74 61 74 75 73 20 4d 65 73 73 61 67 65 73 0d 0a 0d 0a 20 20 20 20 20 ┆.3.4 Status Messages ┆ 0x8c60…8c80 20 20 20 20 84 54 68 65 20 52 43 38 35 35 20 64 69 73 70 6c 61 79 20 73 63 72 65 65 6e 20 70 69 ┆ The RC855 display screen pi┆ 0x8c80…8ca0 63 74 75 72 65 20 69 73 20 63 6f 6d 70 6f 73 65 64 20 6f 66 20 32 35 20 0a 19 89 80 80 6c 69 6e ┆cture is composed of 25 lin┆ 0x8ca0…8cc0 65 73 2c 20 65 61 63 68 20 77 69 74 68 20 38 30 20 63 68 61 72 61 63 74 65 72 20 70 6f 73 69 74 ┆es, each with 80 character posit┆ 0x8cc0…8ce0 69 6f 6e 73 2e 20 54 68 65 20 66 69 72 73 74 20 0a 19 89 80 80 74 77 65 6e 74 79 2d 66 6f 75 72 ┆ions. The first twenty-four┆ 0x8ce0…8d00 20 6c 69 6e 65 73 20 61 72 65 20 75 73 65 64 20 66 6f 72 20 76 61 72 69 6f 75 73 20 70 75 72 70 ┆ lines are used for various purp┆ 0x8d00…8d20 6f 73 65 73 2c 20 65 2e 67 2e 20 61 6e 20 0a 19 89 80 80 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 ┆oses, e.g. an application p┆ 0x8d20…8d40 72 6f 67 72 61 6d 20 6d 65 6e 75 20 6f 72 20 69 6e 74 65 72 61 63 74 69 6f 6e 20 62 65 74 77 65 ┆rogram menu or interaction betwe┆ 0x8d40…8d60 65 6e 20 74 68 65 20 0a 19 89 80 80 52 43 38 35 35 20 6f 70 65 72 61 74 6f 72 20 61 6e 64 20 74 ┆en the RC855 operator and t┆ 0x8d60…8d80 68 65 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 2e 20 54 68 65 20 74 77 65 6e ┆he application program. The twen┆ 0x8d80…8da0 74 79 2d 0a 19 89 80 80 66 69 66 74 68 20 6c 69 6e 65 2c 20 77 68 69 63 68 20 69 73 20 63 61 6c ┆ty- fifth line, which is cal┆ 0x8da0…8dc0 6c 65 64 20 74 68 65 20 73 74 61 74 75 73 20 6c 69 6e 65 2c 20 69 73 20 75 73 65 64 20 66 6f 72 ┆led the status line, is used for┆ 0x8dc0…8de0 20 0a 19 89 80 80 6d 65 73 73 61 67 65 73 20 66 72 6f 6d 20 74 68 65 20 74 65 72 6d 69 6e 61 6c ┆ messages from the terminal┆ 0x8de0…8e00 20 74 6f 20 74 68 65 20 6f 70 65 72 61 74 6f 72 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 ┆ to the operator. T┆ 0x8e00…8e20 (71,) 68 65 20 73 74 61 74 75 73 20 6c 69 6e 65 20 69 73 20 66 6f 72 6d 61 74 74 65 64 20 69 6e 20 76 ┆he status line is formatted in v┆ 0x8e20…8e40 61 72 69 6f 75 73 20 77 61 79 73 2c 20 61 6c 6c 20 0a 19 89 80 80 61 63 63 6f 72 64 69 6e 67 20 ┆arious ways, all according ┆ 0x8e40…8e60 74 6f 20 77 68 69 63 68 20 70 72 6f 67 72 61 6d 20 69 73 20 72 75 6e 6e 69 6e 67 20 6f 6e 20 74 ┆to which program is running on t┆ 0x8e60…8e80 68 65 20 74 65 72 6d 69 6e 61 6c 20 61 74 20 0a 19 89 80 80 74 68 65 20 74 69 6d 65 2e 20 54 68 ┆he terminal at the time. Th┆ 0x8e80…8ea0 65 20 70 6f 73 69 74 69 6f 6e 20 6f 66 20 61 20 6d 65 73 73 61 67 65 20 6f 6e 20 74 68 65 20 73 ┆e position of a message on the s┆ 0x8ea0…8ec0 74 61 74 75 73 20 6c 69 6e 65 20 0a 19 89 80 80 69 73 20 61 6e 20 69 6e 64 69 63 61 74 69 6f 6e ┆tatus line is an indication┆ 0x8ec0…8ee0 20 6f 66 20 77 68 61 74 20 74 68 65 20 6d 65 73 73 61 67 65 20 70 65 72 74 61 69 6e 73 20 74 6f ┆ of what the message pertains to┆ 0x8ee0…8f00 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 46 72 6f 6d 20 74 65 72 6d 69 6e 61 6c 20 72 65 73 ┆. From terminal res┆ 0x8f00…8f20 65 74 20 61 6e 64 20 75 70 20 74 6f 20 74 68 65 20 70 6f 69 6e 74 20 77 68 65 72 65 20 61 20 6c ┆et and up to the point where a l┆ 0x8f20…8f40 6f 61 64 65 64 20 0a 19 89 80 80 52 43 38 35 35 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f ┆oaded RC855 application pro┆ 0x8f40…8f60 67 72 61 6d 20 69 73 20 73 74 61 72 74 65 64 20 61 6e 64 20 69 64 65 6e 74 69 66 69 65 73 20 0a ┆gram is started and identifies ┆ 0x8f60…8f80 8c 83 d8 0a 19 89 80 80 69 74 73 65 6c 66 2c 20 74 68 65 20 73 74 61 74 75 73 20 6c 69 6e 65 20 ┆ itself, the status line ┆ 0x8f80…8fa0 69 73 20 64 69 76 69 64 65 64 20 69 6e 74 6f 20 74 77 6f 20 66 69 65 6c 64 73 20 61 73 20 0a 19 ┆is divided into two fields as ┆ 0x8fa0…8fc0 89 80 80 66 6f 6c 6c 6f 77 73 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 20 20 20 20 20 20 ┆ follows: ┆ 0x8fc0…8fe0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0x8fe0…9000 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 a1 78 ┆ x┆ 0x9000…9020 (72,) 78 78 2e 2e 2e 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆xx... ┆ 0x9020…9040 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 78 78 0d 0a 20 20 20 20 20 20 20 20 ┆ xx ┆ 0x9040…9060 20 31 29 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ 1) ┆ 0x9060…9080 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 32 29 0d 0a 0d 0a 20 20 20 20 ┆ 2) ┆ 0x9080…90a0 20 20 20 20 20 31 29 20 70 6f 73 69 74 69 6f 6e 73 20 20 31 2d 37 38 20 3a 20 84 4d 65 73 73 61 ┆ 1) positions 1-78 : Messa┆ 0x90a0…90c0 67 65 73 20 64 69 73 70 6c 61 79 65 64 20 68 65 72 65 20 70 65 72 74 61 69 6e 20 74 6f 20 0a 19 ┆ges displayed here pertain to ┆ 0x90c0…90e0 9e 80 80 73 79 73 74 65 6d 20 69 64 65 6e 74 69 66 69 63 61 74 69 6f 6e 20 61 6e 64 20 73 79 73 ┆ system identification and sys┆ 0x90e0…9100 74 65 6d 20 0a 19 9e 80 80 73 74 61 74 75 73 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 ┆tem status. ┆ 0x9100…9120 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 41 6e 79 20 65 72 72 6f 72 20 64 65 74 ┆ Any error det┆ 0x9120…9140 65 63 74 65 64 20 64 75 72 69 6e 67 20 74 68 65 20 0a 19 9e 80 80 70 6f 77 65 72 2d 75 70 20 73 ┆ected during the power-up s┆ 0x9140…9160 65 6c 66 74 65 73 74 20 6f 72 20 70 72 6f 67 72 61 6d 20 6c 6f 61 64 80 0a 19 9e 80 80 69 6e 67 ┆elftest or program load ing┆ 0x9160…9180 20 77 69 6c 6c 20 62 65 20 69 6e 64 69 63 61 74 65 64 20 69 6e 20 74 68 69 73 20 0a 19 9e 80 80 ┆ will be indicated in this ┆ 0x9180…91a0 66 69 65 6c 64 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 32 29 20 70 6f 73 69 74 69 6f 6e 73 20 ┆field. 2) positions ┆ 0x91a0…91c0 37 39 2d 38 30 20 3a 20 84 4d 65 73 73 61 67 65 73 20 64 69 73 70 6c 61 79 65 64 20 68 65 72 65 ┆79-80 : Messages displayed here┆ 0x91c0…91e0 20 70 65 72 74 61 69 6e 20 74 6f 20 0a 19 9e 80 80 6f 70 65 72 61 74 69 6f 6e 61 6c 20 73 74 61 ┆ pertain to operational sta┆ 0x91e0…9200 74 75 73 20 64 75 72 69 6e 67 20 70 72 6f 67 72 61 6d 20 0a 19 9e 80 80 6c 6f 61 64 69 6e 67 2e ┆tus during program loading.┆ 0x9200…9220 (73,) 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0x9220…9240 20 20 84 54 68 65 20 70 72 6f 67 72 61 6d 20 6c 6f 61 64 20 6d 65 64 69 75 6d 20 77 69 6c 6c 20 ┆ The program load medium will ┆ 0x9240…9260 62 65 20 0a 19 9e 80 80 69 6e 64 69 63 61 74 65 64 20 69 6e 20 74 68 69 73 20 66 69 65 6c 64 2e ┆be indicated in this field.┆ 0x9260…9280 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 46 6f 72 20 61 6e 20 65 78 61 6d 70 6c 65 20 6f 66 20 ┆ For an example of ┆ 0x9280…92a0 74 68 65 20 73 74 61 74 75 73 20 6c 69 6e 65 20 61 73 20 66 6f 72 6d 61 74 74 65 64 20 62 79 20 ┆the status line as formatted by ┆ 0x92a0…92c0 61 6e 80 0a 19 89 80 80 6f 74 68 65 72 20 70 72 6f 67 72 61 6d 2c 20 76 69 7a 2e 20 74 68 65 20 ┆an other program, viz. the ┆ 0x92c0…92e0 52 43 38 35 35 20 49 42 4d 20 33 32 37 30 20 42 53 43 20 65 6d 75 6c 61 74 6f 72 2c 20 73 65 65 ┆RC855 IBM 3270 BSC emulator, see┆ 0x92e0…92f0 20 0a 19 89 80 80 28 38 29 2e 0d 0a 0d 0a 0d 0a ┆ (8). ┆ 0x92f0…92f3 FormFeed { 0x92f0…92f3 0c 81 e0 ┆ ┆ 0x92f0…92f3 } 0x92f3…9300 0a a1 b0 33 2e 20 20 20 20 20 20 20 4f ┆ 3. O┆ 0x9300…9320 50 45 52 41 54 49 4e 47 20 41 4e 44 20 45 52 52 4f 52 2d 48 41 4e 44 4c 49 4e 47 20 50 52 4f 43 ┆PERATING AND ERROR-HANDLING PROC┆ 0x9320…9340 45 44 55 52 45 53 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 69 73 20 63 68 61 70 74 65 72 ┆EDURES This chapter┆ 0x9340…9360 20 65 78 70 6c 61 69 6e 73 20 74 68 65 20 6f 70 65 72 61 74 69 6f 6e 20 6f 66 20 74 68 65 20 52 ┆ explains the operation of the R┆ 0x9360…9380 43 38 35 35 20 74 65 72 6d 69 80 0a 19 89 80 80 6e 61 6c 20 64 75 72 69 6e 67 20 69 74 73 20 73 ┆C855 termi nal during its s┆ 0x9380…93a0 65 6c 66 74 65 73 74 20 61 6e 64 20 70 72 6f 67 72 61 6d 20 6c 6f 61 64 20 70 68 61 73 65 73 2c ┆elftest and program load phases,┆ 0x93a0…93c0 20 69 2e 65 2e 20 75 70 20 0a 19 89 80 80 74 6f 20 74 68 65 20 70 6f 69 6e 74 20 77 68 65 72 65 ┆ i.e. up to the point where┆ 0x93c0…93e0 20 74 68 65 20 6c 6f 61 64 65 64 20 52 43 38 35 35 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 ┆ the loaded RC855 application pr┆ 0x93e0…9400 6f 67 72 61 6d 20 0a 19 89 80 80 69 73 20 73 74 61 72 74 65 64 20 61 6e 64 20 69 64 65 6e 74 69 ┆ogram is started and identi┆ 0x9400…9420 (74,) 66 69 65 73 20 69 74 73 65 6c 66 2e 20 47 75 69 64 65 6c 69 6e 65 73 20 66 6f 72 20 65 72 72 6f ┆fies itself. Guidelines for erro┆ 0x9420…9440 72 20 0a 19 89 80 80 68 61 6e 64 6c 69 6e 67 20 61 72 65 20 64 65 73 63 72 69 62 65 64 20 77 68 ┆r handling are described wh┆ 0x9440…9460 65 72 65 20 74 68 65 79 20 61 72 65 20 72 65 6c 65 76 61 6e 74 2e 20 54 68 65 20 0a 19 89 80 80 ┆ere they are relevant. The ┆ 0x9460…9480 72 65 61 64 65 72 20 69 73 20 61 64 76 69 73 65 64 20 74 6f 20 61 63 71 75 61 69 6e 74 20 68 69 ┆reader is advised to acquaint hi┆ 0x9480…94a0 6d 73 65 6c 66 20 77 69 74 68 20 74 68 65 20 67 65 6e 65 72 61 6c 20 0a 19 89 80 80 6f 70 65 72 ┆mself with the general oper┆ 0x94a0…94c0 61 74 69 6e 67 20 69 6e 66 6f 72 6d 61 74 69 6f 6e 20 63 6f 6e 74 61 69 6e 65 64 20 69 6e 20 43 ┆ating information contained in C┆ 0x94c0…94e0 68 61 70 74 65 72 20 32 2e 0d 0a 0d 0a 0d 0a a1 b0 33 2e 31 20 20 20 20 20 20 53 74 61 72 74 2d ┆hapter 2. 3.1 Start-┆ 0x94e0…9500 55 70 20 50 72 6f 63 65 64 75 72 65 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 6e 6f ┆Up Procedure The no┆ 0x9500…9520 72 6d 61 6c 20 73 74 61 72 74 2d 75 70 20 70 72 6f 63 65 64 75 72 65 20 69 73 20 6f 75 74 6c 69 ┆rmal start-up procedure is outli┆ 0x9520…9540 6e 65 64 20 69 6e 20 74 68 69 73 20 73 65 63 80 0a 19 89 80 80 74 69 6f 6e 2e 20 41 20 64 65 74 ┆ned in this sec tion. A det┆ 0x9540…9560 61 69 6c 65 64 20 65 78 70 6c 61 6e 61 74 69 6f 6e 20 6f 66 20 74 68 65 20 73 65 6c 66 74 65 73 ┆ailed explanation of the selftes┆ 0x9560…9580 74 20 61 6e 64 20 70 72 6f 67 72 61 6d 20 0a 19 89 80 80 6c 6f 61 64 20 70 68 61 73 65 73 20 69 ┆t and program load phases i┆ 0x9580…95a0 73 20 67 69 76 65 6e 20 69 6e 20 74 68 65 20 73 65 63 74 69 6f 6e 73 20 74 68 61 74 20 66 6f 6c ┆s given in the sections that fol┆ 0x95a0…95c0 6c 6f 77 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 31 2e 20 84 41 70 70 6c 79 20 70 6f 77 65 72 ┆low. 1. Apply power┆ 0x95c0…95e0 20 74 6f 20 61 6e 79 20 63 6f 6e 6e 65 63 74 65 64 20 64 65 76 69 63 65 2c 20 65 2e 67 2e 20 61 ┆ to any connected device, e.g. a┆ 0x95e0…9600 20 64 69 73 6b 20 0a 19 8c 80 80 73 79 73 74 65 6d 2c 20 70 72 69 6e 74 65 72 2c 20 6f 72 20 6d ┆ disk system, printer, or m┆ 0x9600…9620 (75,) 6f 64 65 6d 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 32 2e 20 84 49 66 20 72 65 71 75 69 72 65 ┆odem. 2. If require┆ 0x9620…9640 64 2c 20 69 6e 73 65 72 74 20 74 68 65 20 43 50 2f 4d 20 73 79 73 74 65 6d 20 64 69 73 6b 65 74 ┆d, insert the CP/M system disket┆ 0x9640…9660 74 65 20 69 6e 20 74 68 65 20 0a 19 8c 80 80 64 69 73 6b 65 74 74 65 20 64 72 69 76 65 20 74 6f ┆te in the diskette drive to┆ 0x9660…9680 20 70 65 72 6d 69 74 20 70 72 6f 67 72 61 6d 20 6c 6f 61 64 69 6e 67 2e 0d 0a 0d 0a 20 20 20 20 ┆ permit program loading. ┆ 0x9680…96a0 20 20 20 20 20 33 2e 20 84 49 66 20 72 65 71 75 69 72 65 64 2c 20 69 6e 73 65 72 74 20 74 68 65 ┆ 3. If required, insert the┆ 0x96a0…96c0 20 6b 65 79 20 69 6e 20 74 68 65 20 6b 65 79 62 6f 61 72 64 20 6c 6f 63 6b 69 6e 67 20 0a 19 8c ┆ key in the keyboard locking ┆ 0x96c0…96e0 80 80 64 65 76 69 63 65 20 61 6e 64 20 74 75 72 6e 20 69 74 20 74 6f 20 65 6e 61 62 6c 65 20 75 ┆ device and turn it to enable u┆ 0x96e0…9700 73 65 20 6f 66 20 74 68 65 20 6b 65 79 62 6f 61 72 64 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 ┆se of the keyboard. ┆ 0x9700…9720 34 2e 20 84 41 70 70 6c 79 20 70 6f 77 65 72 20 74 6f 20 74 68 65 20 74 65 72 6d 69 6e 61 6c 20 ┆4. Apply power to the terminal ┆ 0x9720…9740 69 74 73 65 6c 66 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 35 2e 20 84 4f 62 73 65 72 76 65 20 ┆itself. 5. Observe ┆ 0x9740…9760 74 68 65 20 6d 65 73 73 61 67 65 73 20 64 69 73 70 6c 61 79 65 64 20 6f 6e 20 74 68 65 20 73 74 ┆the messages displayed on the st┆ 0x9760…9780 61 74 75 73 20 6c 69 6e 65 2e 0d 0a 0d 0a 0d 0a a1 b0 33 2e 32 20 20 20 20 20 20 53 65 6c 66 74 ┆atus line. 3.2 Selft┆ 0x9780…97a0 65 73 74 20 50 68 61 73 65 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 41 6c 6c 20 52 43 38 35 35 ┆est Phase All RC855┆ 0x97a0…97c0 20 74 65 72 6d 69 6e 61 6c 73 20 61 72 65 20 6f 70 65 72 61 74 65 64 20 69 6e 20 74 68 65 20 73 ┆ terminals are operated in the s┆ 0x97c0…97e0 61 6d 65 20 77 61 79 20 69 6e 20 74 68 65 20 0a 19 89 80 80 69 6e 69 74 69 61 6c 2c 20 73 65 6c ┆ame way in the initial, sel┆ 0x97e0…9800 66 74 65 73 74 20 70 68 61 73 65 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 84 54 6f 20 61 ┆ftest phase. . To a┆ 0x9800…9820 (76,) 70 70 6c 79 20 70 6f 77 65 72 20 74 6f 20 74 68 65 20 64 69 73 70 6c 61 79 20 75 6e 69 74 20 61 ┆pply power to the display unit a┆ 0x9820…9840 6e 64 20 63 6f 6e 6e 65 63 74 65 64 20 0a 19 8b 80 80 6b 65 79 62 6f 61 72 64 3a 20 50 72 65 73 ┆nd connected keyboard: Pres┆ 0x9840…9860 73 20 74 68 65 20 70 6f 77 65 72 20 73 77 69 74 63 68 2e 20 54 68 69 73 20 77 69 6c 6c 20 61 6c ┆s the power switch. This will al┆ 0x9860…9880 73 6f 20 63 61 75 73 65 20 0a 19 8b 80 80 74 68 65 20 74 65 72 6d 69 6e 61 6c 20 74 6f 20 62 65 ┆so cause the terminal to be┆ 0x9880…98a0 20 72 65 73 65 74 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 84 54 6f 20 72 65 73 65 74 20 ┆ reset. . To reset ┆ 0x98a0…98c0 74 68 65 20 74 65 72 6d 69 6e 61 6c 20 6f 6e 63 65 20 69 74 20 69 73 20 70 6f 77 65 72 65 64 20 ┆the terminal once it is powered ┆ 0x98c0…98e0 6f 6e 3a 20 50 72 65 73 73 20 74 68 65 20 0a 19 8b 80 80 72 65 73 65 74 20 62 75 74 74 6f 6e 2e ┆on: Press the reset button.┆ 0x98e0…9900 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 41 66 74 65 72 20 65 76 65 72 79 20 72 65 73 65 74 20 ┆ After every reset ┆ 0x9900…9920 74 68 65 20 74 65 72 6d 69 6e 61 6c 20 65 78 65 63 75 74 65 73 20 74 68 65 20 70 6f 77 65 72 2d ┆the terminal executes the power-┆ 0x9920…9940 75 70 20 0a 19 89 80 80 73 65 6c 66 74 65 73 74 2e 20 54 6f 77 61 72 64 20 74 68 65 20 65 6e 64 ┆up selftest. Toward the end┆ 0x9940…9960 20 6f 66 20 74 68 65 20 70 6f 77 65 72 2d 75 70 20 73 65 6c 66 74 65 73 74 20 28 61 70 80 0a 19 ┆ of the power-up selftest (ap ┆ 0x9960…9980 89 80 80 70 72 6f 78 69 6d 61 74 65 6c 79 20 35 20 73 65 63 6f 6e 64 73 20 61 66 74 65 72 20 72 ┆ proximately 5 seconds after r┆ 0x9980…99a0 65 73 65 74 29 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 6d 65 73 73 61 67 65 20 0a 19 89 80 ┆eset) the following message ┆ 0x99a0…99c0 80 69 73 20 64 69 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 20 20 20 ┆ is displayed: ┆ 0x99c0…99e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0x99e0…9a00 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 ┆ ┆ 0x9a00…9a20 (77,) 84 a1 52 43 38 35 35 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ RC855 ┆ 0x9a20…9a40 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 0d 0a 20 20 ┆ ┆ 0x9a40…9a60 20 20 20 20 20 20 20 2e 20 84 54 6f 20 72 75 6e 20 74 68 65 20 65 78 74 65 6e 64 65 64 20 73 65 ┆ . To run the extended se┆ 0x9a60…9a80 6c 66 74 65 73 74 3a 20 41 73 20 73 6f 6f 6e 20 61 73 20 74 68 65 20 74 65 72 6d 69 6e 61 6c 20 ┆lftest: As soon as the terminal ┆ 0x9a80…9aa0 0a 19 8b 80 80 69 73 20 72 65 73 65 74 2c 20 68 6f 6c 64 20 74 68 65 20 6b 65 79 20 6c 61 62 65 ┆ is reset, hold the key labe┆ 0x9aa0…9ac0 6c 65 64 20 22 54 22 20 64 65 70 72 65 73 73 65 64 20 77 68 69 6c 65 20 0a 19 8b 80 80 74 68 65 ┆led "T" depressed while the┆ 0x9ac0…9ae0 20 74 65 72 6d 69 6e 61 6c 20 65 78 65 63 75 74 65 73 20 74 68 65 20 70 6f 77 65 72 2d 75 70 20 ┆ terminal executes the power-up ┆ 0x9ae0…9b00 73 65 6c 66 74 65 73 74 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 84 54 6f 20 70 65 72 66 ┆selftest. . To perf┆ 0x9b00…9b20 6f 72 6d 20 61 6c 74 65 72 6e 61 74 69 76 65 20 70 72 6f 67 72 61 6d 20 6c 6f 61 64 69 6e 67 3a ┆orm alternative program loading:┆ 0x9b20…9b40 20 41 73 20 73 6f 6f 6e 20 61 73 20 74 68 65 20 0a 19 8b 80 80 74 65 72 6d 69 6e 61 6c 20 69 73 ┆ As soon as the terminal is┆ 0x9b40…9b60 20 72 65 73 65 74 2c 20 68 6f 6c 64 20 74 68 65 20 61 70 70 72 6f 70 72 69 61 74 65 20 6b 65 79 ┆ reset, hold the appropriate key┆ 0x9b60…9b80 20 64 65 70 72 65 73 73 65 64 20 0a 19 8b 80 80 77 68 69 6c 65 20 74 68 65 20 74 65 72 6d 69 6e ┆ depressed while the termin┆ 0x9b80…9ba0 61 6c 20 65 78 65 63 75 74 65 73 20 74 68 65 20 70 6f 77 65 72 2d 75 70 20 73 65 6c 66 74 65 73 ┆al executes the power-up selftes┆ 0x9ba0…9bc0 74 2e 0d 0a 0d 0a 8c 83 d8 0a 20 20 20 20 20 20 20 20 20 a1 e1 b0 45 72 72 6f 72 20 48 61 6e 64 ┆t. Error Hand┆ 0x9bc0…9be0 6c 69 6e 67 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 45 72 72 6f 72 73 20 64 65 74 65 63 74 65 ┆ling Errors detecte┆ 0x9be0…9c00 64 20 62 79 20 74 68 65 20 70 6f 77 65 72 2d 75 70 20 73 65 6c 66 74 65 73 74 20 63 61 6e 6e 6f ┆d by the power-up selftest canno┆ 0x9c00…9c20 (78,) 74 20 62 65 20 0a 19 89 80 80 64 69 72 65 63 74 6c 79 20 62 79 70 61 73 73 65 64 2e 0d 0a 0d 0a ┆t be directly bypassed. ┆ 0x9c20…9c40 20 20 20 20 20 20 20 20 20 84 49 66 20 61 6e 20 65 72 72 6f 72 20 69 73 20 64 65 74 65 63 74 65 ┆ If an error is detecte┆ 0x9c40…9c60 64 20 64 75 72 69 6e 67 20 74 68 65 20 50 52 4f 4d 20 63 68 65 63 6b 73 75 6d 20 74 65 73 74 2c ┆d during the PROM checksum test,┆ 0x9c60…9c80 20 0a 19 89 80 80 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 6d 65 73 73 61 67 65 20 69 73 20 64 ┆ the following message is d┆ 0x9c80…9ca0 69 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 a1 20 20 20 20 20 20 20 20 20 ┆isplayed: ┆ 0x9ca0…9cc0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0x9cc0…9ce0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 ┆ RC855┆ 0x9ce0…9d00 20 63 68 65 63 6b 73 75 6d 20 65 72 72 6f 72 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ checksum error ┆ 0x9d00…9d20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 ┆ ┆ 0x9d20…9d40 49 66 20 61 6e 20 65 72 72 6f 72 20 69 73 20 64 65 74 65 63 74 65 64 20 64 75 72 69 6e 67 20 74 ┆If an error is detected during t┆ 0x9d40…9d60 68 65 20 52 41 4d 20 6d 65 6d 6f 72 79 20 74 65 73 74 2c 20 74 68 65 20 0a 19 89 80 80 66 6f 6c ┆he RAM memory test, the fol┆ 0x9d60…9d80 6c 6f 77 69 6e 67 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a ┆lowing message is displayed: ┆ 0x9d80…9da0 20 20 20 20 20 20 20 20 20 84 a1 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0x9da0…9dc0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0x9dc0…9de0 20 20 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 6d 65 6d 6f 72 79 20 65 72 72 6f ┆ RC855 memory erro┆ 0x9de0…9e00 72 20 3c 61 64 64 72 65 73 73 65 73 20 61 6e 64 20 76 61 6c 75 65 73 3e 20 20 20 20 20 20 20 20 ┆r <addresses and values> ┆ 0x9e00…9e20 (79,) 20 20 20 20 20 20 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4f 6e 20 61 6e 20 65 72 72 6f 72 20 ┆ On an error ┆ 0x9e20…9e40 64 65 74 65 63 74 65 64 20 62 79 20 74 68 65 20 70 6f 77 65 72 2d 75 70 20 73 65 6c 66 74 65 73 ┆detected by the power-up selftes┆ 0x9e40…9e60 74 2c 20 74 68 65 20 0a 19 89 80 80 6f 70 65 72 61 74 6f 72 20 73 68 6f 75 6c 64 20 6e 6f 74 65 ┆t, the operator should note┆ 0x9e60…9e80 20 64 6f 77 6e 20 74 68 65 20 6d 65 73 73 61 67 65 2c 20 69 6e 63 6c 75 64 69 6e 67 20 61 6e 79 ┆ down the message, including any┆ 0x9e80…9ea0 20 0a 19 89 80 80 61 64 64 72 65 73 73 65 73 20 61 6e 64 20 76 61 6c 75 65 73 2c 20 61 6e 64 20 ┆ addresses and values, and ┆ 0x9ea0…9ec0 72 65 70 6f 72 74 20 74 68 65 20 65 72 72 6f 72 2e 0d 0a 0d 0a 0d 0a a1 b0 33 2e 33 20 20 20 20 ┆report the error. 3.3 ┆ 0x9ec0…9ee0 20 20 50 72 6f 67 72 61 6d 20 4c 6f 61 64 20 50 68 61 73 65 0d 0a 0d 0a 20 20 20 20 20 20 20 20 ┆ Program Load Phase ┆ 0x9ee0…9f00 20 84 41 73 20 64 69 66 66 65 72 65 6e 74 20 6d 65 64 69 61 20 61 72 65 20 75 73 65 64 20 74 6f ┆ As different media are used to┆ 0x9f00…9f20 20 6c 6f 61 64 20 52 43 38 35 35 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 0a 19 89 80 80 70 72 6f ┆ load RC855 application pro┆ 0x9f20…9f40 67 72 61 6d 73 2c 20 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 73 20 61 72 65 20 6f 70 65 72 61 ┆grams, RC855 terminals are opera┆ 0x9f40…9f60 74 65 64 20 69 6e 20 64 69 66 66 65 72 65 6e 74 20 77 61 79 73 20 0a 19 89 80 80 69 6e 20 74 68 ┆ted in different ways in th┆ 0x9f60…9f80 65 20 73 75 62 73 65 71 75 65 6e 74 2c 20 70 72 6f 67 72 61 6d 20 6c 6f 61 64 20 70 68 61 73 65 ┆e subsequent, program load phase┆ 0x9f80…9fa0 2e 0d 0a 0d 0a 0d 0a a1 b0 33 2e 33 2e 31 20 20 20 20 49 6e 74 65 72 6e 61 6c 20 4d 65 6d 6f 72 ┆. 3.3.1 Internal Memor┆ 0x9fa0…9fc0 79 20 42 6f 61 72 64 73 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 44 75 72 69 6e 67 20 70 72 6f ┆y Boards During pro┆ 0x9fc0…9fe0 67 72 61 6d 20 6c 6f 61 64 69 6e 67 20 69 6e 20 50 52 4f 4d 20 6d 6f 64 65 2c 20 69 2e 65 2e 20 ┆gram loading in PROM mode, i.e. ┆ 0x9fe0…a000 66 72 6f 6d 20 4d 49 43 20 0a 19 89 80 80 50 52 4f 4d 73 2c 20 74 68 65 20 66 6f 6c 6c 6f 77 69 ┆from MIC PROMs, the followi┆ 0xa000…a020 (80,) 6e 67 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 ┆ng message is displayed: ┆ 0xa020…a040 20 20 20 20 20 a1 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xa040…a060 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 09 0d 0a 20 ┆ ┆ 0xa060…a080 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ RC855 ┆ 0xa080…a0a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4c ┆ L┆ 0xa0a0…a0c0 50 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 44 75 72 69 6e 67 20 70 72 6f 67 72 61 6d 20 6c 6f ┆P During program lo┆ 0xa0c0…a0e0 61 64 69 6e 67 20 69 6e 20 69 6d 61 67 65 2d 6c 6f 61 64 20 6d 6f 64 65 2c 20 69 2e 65 2e 20 66 ┆ading in image-load mode, i.e. f┆ 0xa0e0…a100 72 6f 6d 20 49 4d 4c 20 0a 19 89 80 80 50 52 4f 4d 73 2c 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e ┆rom IML PROMs, the followin┆ 0xa100…a120 67 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 20 ┆g message is displayed: ┆ 0xa120…a140 20 20 20 20 84 a1 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xa140…a160 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 ┆ ┆ 0xa160…a180 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ RC855 ┆ 0xa180…a1a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4c ┆ L┆ 0xa1a0…a1c0 49 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a2 a2 e2 a1 e1 e1 e1 e1 b0 45 a1 e1 72 72 6f 72 20 ┆I E rror ┆ 0xa1c0…a1e0 48 61 6e 64 6c 69 6e 67 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 49 66 20 61 20 63 68 65 63 6b ┆Handling If a check┆ 0xa1e0…a200 73 75 6d 20 65 72 72 6f 72 20 69 73 20 64 65 74 65 63 74 65 64 20 69 6e 20 61 20 70 72 6f 67 72 ┆sum error is detected in a progr┆ 0xa200…a220 (81,) 61 6d 20 69 6d 61 67 65 20 0a 19 89 80 80 6c 6f 61 64 65 64 20 66 72 6f 6d 20 4d 49 43 20 50 52 ┆am image loaded from MIC PR┆ 0xa220…a240 4f 4d 73 2c 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 ┆OMs, the following message is di┆ 0xa240…a260 73 80 0a 19 89 80 80 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 a1 20 20 20 20 ┆s played: ┆ 0xa260…a280 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xa280…a2a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 ┆ ┆ 0xa2a0…a2c0 52 43 38 35 35 20 43 68 65 63 6b 73 75 6d 20 65 72 72 6f 72 20 20 20 20 20 20 20 20 20 20 20 20 ┆RC855 Checksum error ┆ 0xa2c0…a2e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4c 50 0d 0a 20 0d 0a 20 20 20 20 ┆ LP ┆ 0xa2e0…a300 20 20 20 20 20 84 49 66 20 61 20 63 68 65 63 6b 73 75 6d 20 65 72 72 6f 72 20 69 73 20 64 65 74 ┆ If a checksum error is det┆ 0xa300…a320 65 63 74 65 64 20 69 6e 20 61 20 70 72 6f 67 72 61 6d 20 69 6d 61 67 65 20 0a 19 89 80 80 6c 6f ┆ected in a program image lo┆ 0xa320…a340 61 64 65 64 20 66 72 6f 6d 20 49 4d 4c 20 50 52 4f 4d 73 2c 20 74 68 65 20 66 6f 6c 6c 6f 77 69 ┆aded from IML PROMs, the followi┆ 0xa340…a360 6e 67 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 73 80 0a 19 89 80 80 70 6c 61 79 65 64 3a 0d 0a ┆ng message is dis played: ┆ 0xa360…a362 0d 0a ┆ ┆ 0xa362…a365 FormFeed { 0xa362…a365 0c 83 c0 ┆ ┆ 0xa362…a365 } 0xa365…a380 0a 20 20 20 20 20 20 20 20 20 a1 84 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xa380…a3a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xa3a0…a3c0 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 43 68 65 63 6b ┆ RC855 Check┆ 0xa3c0…a3e0 73 75 6d 20 65 72 72 6f 72 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆sum error ┆ 0xa3e0…a400 20 20 20 20 20 20 20 20 20 20 4c 49 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4f 6e 20 61 20 63 ┆ LI On a c┆ 0xa400…a420 (82,) 68 65 63 6b 73 75 6d 20 65 72 72 6f 72 2c 20 74 68 65 20 6f 70 65 72 61 74 6f 72 20 73 68 6f 75 ┆hecksum error, the operator shou┆ 0xa420…a440 6c 64 20 72 65 73 65 74 20 74 68 65 20 0a 19 89 80 80 74 65 72 6d 69 6e 61 6c 2e 20 49 66 20 74 ┆ld reset the terminal. If t┆ 0xa440…a460 68 65 20 65 72 72 6f 72 20 70 65 72 73 69 73 74 73 2c 20 68 65 20 73 68 6f 75 6c 64 20 72 65 70 ┆he error persists, he should rep┆ 0xa460…a480 6f 72 74 20 69 74 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 49 66 20 74 68 65 20 6f 70 65 72 ┆ort it. If the oper┆ 0xa480…a4a0 61 74 6f 72 20 70 72 65 73 73 65 73 20 22 50 22 20 28 6f 72 20 4c 44 20 3d 20 33 29 20 61 6e 64 ┆ator presses "P" (or LD = 3) and┆ 0xa4a0…a4c0 20 6e 6f 20 4d 49 43 20 50 52 4f 4d 20 0a 19 89 80 80 69 73 20 70 72 65 73 65 6e 74 2c 20 6c 6f ┆ no MIC PROM is present, lo┆ 0xa4c0…a4e0 61 64 69 6e 67 20 74 61 6b 65 73 20 70 6c 61 63 65 20 66 72 6f 6d 20 64 69 73 6b 65 74 74 65 20 ┆ading takes place from diskette ┆ 0xa4e0…a500 28 33 2e 33 2e 32 29 3b 20 0a 19 89 80 80 69 66 20 6e 6f 20 64 69 73 6b 65 74 74 65 20 69 73 20 ┆(3.3.2); if no diskette is ┆ 0xa500…a520 70 72 65 73 65 6e 74 2c 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 6d 65 73 73 61 67 65 20 69 ┆present, the following message i┆ 0xa520…a540 73 20 0a 19 89 80 80 64 69 73 70 6c 61 79 65 64 3a 0d 0a 20 0d 0a 20 20 20 20 20 20 20 20 20 84 ┆s displayed: ┆ 0xa540…a560 a1 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xa560…a580 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 ┆ ┆ 0xa580…a5a0 20 20 20 84 a1 52 43 38 35 35 20 2d 20 49 6e 73 65 72 74 20 64 69 73 6b 65 74 74 65 20 20 20 20 ┆ RC855 - Insert diskette ┆ 0xa5a0…a5c0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 0d 0a ┆ ┆ 0xa5c0…a5e0 20 20 20 20 20 20 20 20 20 84 49 66 20 74 68 65 20 6f 70 65 72 61 74 6f 72 20 70 72 65 73 73 65 ┆ If the operator presse┆ 0xa5e0…a600 73 20 22 49 22 20 28 6f 72 20 4c 44 20 3d 20 37 29 20 61 6e 64 20 6e 6f 20 49 4d 4c 20 50 52 4f ┆s "I" (or LD = 7) and no IML PRO┆ 0xa600…a620 (83,) 4d 20 0a 19 89 80 80 69 73 20 70 72 65 73 65 6e 74 2c 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 ┆M is present, the following┆ 0xa620…a640 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 20 20 ┆ message is displayed: ┆ 0xa640…a660 20 20 20 84 a1 84 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xa660…a680 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 ┆ ┆ 0xa680…a6a0 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 4c 6f 61 64 20 73 74 61 74 75 73 3a 20 48 61 72 ┆ RC855 Load status: Har┆ 0xa6a0…a6c0 64 20 65 72 72 6f 72 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4c ┆d error L┆ 0xa6c0…a6e0 49 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4f 6e 20 65 69 74 68 65 72 20 6f 66 20 74 68 65 20 ┆I On either of the ┆ 0xa6e0…a700 65 72 72 6f 72 73 20 61 62 6f 76 65 2c 20 74 68 65 20 6f 70 65 72 61 74 6f 72 20 73 68 6f 75 6c ┆errors above, the operator shoul┆ 0xa700…a720 64 20 72 65 73 65 74 20 0a 19 89 80 80 74 68 65 20 74 65 72 6d 69 6e 61 6c 20 61 6e 64 20 69 6e ┆d reset the terminal and in┆ 0xa720…a740 76 65 73 74 69 67 61 74 65 20 74 68 65 20 61 76 61 69 6c 61 62 6c 65 20 6c 6f 61 64 20 6d 65 64 ┆vestigate the available load med┆ 0xa740…a760 69 61 20 0a 19 89 80 80 62 65 66 6f 72 65 20 70 72 6f 63 65 65 64 69 6e 67 2e 0d 0a 0d 0a 0d 0a ┆ia before proceeding. ┆ 0xa760…a780 a1 b0 33 2e 33 2e 32 20 20 20 20 44 69 73 6b 20 53 79 73 74 65 6d 73 0d 0a 0d 0a 20 20 20 20 20 ┆ 3.3.2 Disk Systems ┆ 0xa780…a7a0 20 20 20 20 84 44 75 72 69 6e 67 20 70 72 6f 67 72 61 6d 20 6c 6f 61 64 69 6e 67 20 69 6e 20 68 ┆ During program loading in h┆ 0xa7a0…a7c0 61 72 64 20 64 69 73 6b 20 6d 6f 64 65 2c 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 0a 19 89 ┆ard disk mode, the following ┆ 0xa7c0…a7e0 80 80 6d 65 73 73 61 67 65 20 69 73 20 64 69 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 20 ┆ message is displayed: ┆ 0xa7e0…a800 20 20 20 20 84 a1 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xa800…a820 (84,) 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 ┆ ┆ 0xa820…a840 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ RC855 ┆ 0xa840…a860 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xa860…a880 20 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 41 73 20 73 6f 6f 6e 20 61 73 20 74 68 65 20 61 70 ┆ As soon as the ap┆ 0xa880…a8a0 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 20 68 61 73 20 62 65 65 6e 20 6c 6f 61 64 65 ┆plication program has been loade┆ 0xa8a0…a8c0 64 20 61 6e 64 20 0a 19 89 80 80 73 74 61 72 74 65 64 2c 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e ┆d and started, the followin┆ 0xa8c0…a8e0 67 20 61 70 70 65 61 72 73 20 6f 6e 20 74 68 65 20 66 69 72 73 74 20 74 77 6f 20 6c 69 6e 65 73 ┆g appears on the first two lines┆ 0xa8e0…a900 20 6f 66 20 0a 19 89 80 80 74 68 65 20 64 69 73 70 6c 61 79 20 73 63 72 65 65 6e 20 28 63 66 2e ┆ of the display screen (cf.┆ 0xa900…a920 20 53 65 63 74 2e 20 33 2e 34 29 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 09 84 52 43 38 35 35 ┆ Sect. 3.4): RC855┆ 0xa920…a940 20 35 36 6b 20 43 50 2f 4d 20 32 2e 32 20 72 65 6c 2e 20 32 2e 32 0d 0a 09 09 84 48 61 72 64 20 ┆ 56k CP/M 2.2 rel. 2.2 Hard ┆ 0xa940…a960 64 69 73 6b 20 6f 6e 6c 69 6e 65 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 44 75 72 69 6e 67 20 ┆disk online During ┆ 0xa960…a980 70 72 6f 67 72 61 6d 20 6c 6f 61 64 69 6e 67 20 69 6e 20 64 69 73 6b 65 74 74 65 20 6d 6f 64 65 ┆program loading in diskette mode┆ 0xa980…a9a0 2c 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 0a 19 89 80 80 6d 65 73 73 61 67 65 20 69 73 20 ┆, the following message is ┆ 0xa9a0…a9c0 64 69 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 20 20 20 20 20 20 20 ┆displayed: ┆ 0xa9c0…a9e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xa9e0…aa00 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 ┆ RC85┆ 0xaa00…aa20 (85,) 35 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆5 ┆ 0xaa20…aa40 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4c 44 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 a1 ┆ LD ┆ 0xaa40…aa60 84 e1 b0 45 72 72 6f 72 20 48 61 6e 64 6c 69 6e 67 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 49 ┆ Error Handling I┆ 0xaa60…aa80 66 20 61 6e 20 65 72 72 6f 72 20 69 73 20 64 65 74 65 63 74 65 64 20 64 75 72 69 6e 67 20 70 72 ┆f an error is detected during pr┆ 0xaa80…aaa0 6f 67 72 61 6d 20 6c 6f 61 64 69 6e 67 20 66 72 6f 6d 20 68 61 72 64 20 0a 19 89 80 80 64 69 73 ┆ogram loading from hard dis┆ 0xaaa0…aac0 6b 2c 20 6f 6e 65 20 6f 66 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 6d 65 73 73 61 67 65 73 ┆k, one of the following messages┆ 0xaac0…aae0 20 69 73 20 64 69 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 a1 84 20 20 20 ┆ is displayed: ┆ 0xaae0…ab00 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xab00…ab20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 a1 84 ┆ ┆ 0xab20…ab40 52 43 38 35 35 20 48 61 72 64 20 64 69 73 6b 3a 20 42 61 64 20 73 65 63 74 6f 72 20 20 20 20 20 ┆RC855 Hard disk: Bad sector ┆ 0xab40…ab60 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 0d 0a 20 20 20 20 20 20 ┆ ┆ 0xab60…ab80 20 20 20 84 a1 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xab80…aba0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 20 20 ┆ ┆ 0xaba0…abc0 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 48 61 72 64 20 64 69 73 6b 3a 20 49 6e 76 61 6c 69 64 ┆ RC855 Hard disk: Invalid┆ 0xabc0…abe0 20 69 64 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a ┆ id ┆ 0xabe0…ac00 0d 0a 8c 83 c8 0a 20 20 20 20 20 20 20 20 20 84 4f 6e 20 65 69 74 68 65 72 20 6f 66 20 74 68 65 ┆ On either of the┆ 0xac00…ac20 (86,) 20 65 72 72 6f 72 73 20 61 62 6f 76 65 2c 20 74 68 65 20 6f 70 65 72 61 74 6f 72 20 73 68 6f 75 ┆ errors above, the operator shou┆ 0xac20…ac40 6c 64 20 72 65 73 65 74 20 0a 19 89 80 80 74 68 65 20 74 65 72 6d 69 6e 61 6c 2e 20 49 66 20 74 ┆ld reset the terminal. If t┆ 0xac40…ac60 68 65 20 65 72 72 6f 72 20 70 65 72 73 69 73 74 73 2c 20 68 65 20 73 68 6f 75 6c 64 20 72 65 70 ┆he error persists, he should rep┆ 0xac60…ac80 6f 72 74 20 0a 19 89 80 80 69 74 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 49 66 20 61 6e 20 ┆ort it. If an ┆ 0xac80…aca0 65 72 72 6f 72 20 69 73 20 64 65 74 65 63 74 65 64 20 64 75 72 69 6e 67 20 70 72 6f 67 72 61 6d ┆error is detected during program┆ 0xaca0…acc0 20 6c 6f 61 64 69 6e 67 20 66 72 6f 6d 20 0a 19 89 80 80 64 69 73 6b 65 74 74 65 2c 20 74 68 65 ┆ loading from diskette, the┆ 0xacc0…ace0 20 66 6f 6c 6c 6f 77 69 6e 67 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 73 70 6c 61 79 65 64 3a ┆ following message is displayed:┆ 0xace0…ad00 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 a1 84 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xad00…ad20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xad20…ad40 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 4c 6f 61 64 20 73 74 61 ┆ RC855 Load sta┆ 0xad40…ad60 74 75 73 3a 20 44 69 73 6b 65 74 74 65 20 65 72 72 6f 72 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆tus: Diskette error ┆ 0xad60…ad80 20 20 20 20 20 20 4c 44 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4f 6e 20 74 68 65 20 65 72 72 ┆ LD On the err┆ 0xad80…ada0 6f 72 20 61 62 6f 76 65 2c 20 74 68 65 20 6f 70 65 72 61 74 6f 72 20 73 68 6f 75 6c 64 20 72 65 ┆or above, the operator should re┆ 0xada0…adc0 73 65 74 20 74 68 65 20 74 65 72 6d 69 80 0a 19 89 80 80 6e 61 6c 2e 20 49 66 20 74 68 65 20 65 ┆set the termi nal. If the e┆ 0xadc0…ade0 72 72 6f 72 20 70 65 72 73 69 73 74 73 2c 20 68 65 20 73 68 6f 75 6c 64 20 61 74 74 65 6d 70 74 ┆rror persists, he should attempt┆ 0xade0…ae00 20 74 6f 20 6c 6f 61 64 20 0a 19 89 80 80 66 72 6f 6d 20 61 6e 6f 74 68 65 72 20 43 50 2f 4d 20 ┆ to load from another CP/M ┆ 0xae00…ae20 (87,) 73 79 73 74 65 6d 20 64 69 73 6b 65 74 74 65 2c 20 69 66 20 6f 6e 65 20 69 73 20 61 76 61 69 6c ┆system diskette, if one is avail┆ 0xae20…ae40 61 62 6c 65 2c 20 0a 19 89 80 80 62 65 66 6f 72 65 20 72 65 70 6f 72 74 69 6e 67 20 74 68 65 20 ┆able, before reporting the ┆ 0xae40…ae60 65 72 72 6f 72 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 49 66 20 74 68 65 20 6f 70 65 72 61 ┆error. If the opera┆ 0xae60…ae80 74 6f 72 20 70 72 65 73 73 65 73 20 22 44 22 20 28 6f 72 20 4c 44 20 3d 20 34 29 20 61 6e 64 20 ┆tor presses "D" (or LD = 4) and ┆ 0xae80…aea0 74 68 65 20 68 61 72 64 20 0a 19 89 80 80 64 69 73 6b 20 64 72 69 76 65 20 69 73 20 6e 6f 74 20 ┆the hard disk drive is not ┆ 0xaea0…aec0 70 6f 77 65 72 65 64 20 6f 6e 20 6f 72 20 6e 6f 20 68 61 72 64 20 64 69 73 6b 20 64 72 69 76 65 ┆powered on or no hard disk drive┆ 0xaec0…aee0 20 69 73 20 0a 19 89 80 80 63 6f 6e 6e 65 63 74 65 64 20 74 6f 20 74 68 65 20 64 69 73 70 6c 61 ┆ is connected to the displa┆ 0xaee0…af00 79 20 75 6e 69 74 2c 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 6d 65 73 73 61 67 65 20 69 73 ┆y unit, the following message is┆ 0xaf00…af20 20 0a 19 89 80 80 64 69 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 20 ┆ displayed: ┆ 0xaf20…af40 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xaf40…af60 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xaf60…af80 84 a1 52 43 38 35 35 20 4c 6f 61 64 20 73 74 61 74 75 73 3a 20 48 61 72 64 20 65 72 72 6f 72 20 ┆ RC855 Load status: Hard error ┆ 0xaf80…afa0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 0d 0a 20 20 20 20 ┆ ┆ 0xafa0…afc0 20 20 20 20 20 84 4e 6f 74 65 20 74 68 61 74 20 74 68 65 20 61 62 6f 76 65 20 6d 65 73 73 61 67 ┆ Note that the above messag┆ 0xafc0…afe0 65 20 69 73 20 61 6c 73 6f 20 64 69 73 70 6c 61 79 65 64 2c 20 69 66 20 74 68 65 20 0a 19 89 80 ┆e is also displayed, if the ┆ 0xafe0…b000 80 6f 70 65 72 61 74 6f 72 20 70 72 65 73 73 65 73 20 22 46 22 20 28 6f 72 20 4c 44 20 3d 20 36 ┆ operator presses "F" (or LD = 6┆ 0xb000…b020 (88,) 29 20 61 6e 64 20 74 68 65 20 68 61 72 64 20 64 69 73 6b 20 64 72 69 76 65 20 0a 19 89 80 80 74 ┆) and the hard disk drive t┆ 0xb020…b040 68 72 6f 75 67 68 20 77 68 69 63 68 20 74 68 65 20 64 69 73 6b 65 74 74 65 20 64 72 69 76 65 20 ┆hrough which the diskette drive ┆ 0xb040…b060 69 73 20 63 6f 6e 6e 65 63 74 65 64 20 69 73 20 6e 6f 74 20 0a 19 89 80 80 70 6f 77 65 72 65 64 ┆is connected is not powered┆ 0xb060…b080 20 6f 6e 20 6f 72 20 6e 6f 20 68 61 72 64 20 64 69 73 6b 20 64 72 69 76 65 20 69 73 20 63 6f 6e ┆ on or no hard disk drive is con┆ 0xb080…b0a0 6e 65 63 74 65 64 20 74 6f 20 74 68 65 20 0a 19 89 80 80 64 69 73 70 6c 61 79 20 75 6e 69 74 2e ┆nected to the display unit.┆ 0xb0a0…b0c0 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 49 66 20 74 68 65 20 6f 70 65 72 61 74 6f 72 20 70 72 ┆ If the operator pr┆ 0xb0c0…b0e0 65 73 73 65 73 20 22 46 22 20 28 6f 72 20 4c 44 20 3d 20 36 29 20 61 6e 64 20 74 68 65 20 64 69 ┆esses "F" (or LD = 6) and the di┆ 0xb0e0…b100 73 6b 65 74 74 65 20 0a 19 89 80 80 64 72 69 76 65 20 69 73 20 6e 6f 74 20 70 6f 77 65 72 65 64 ┆skette drive is not powered┆ 0xb100…b120 20 6f 6e 20 6f 72 20 6e 6f 20 64 69 73 6b 65 74 74 65 20 64 72 69 76 65 20 69 73 20 0a 19 89 80 ┆ on or no diskette drive is ┆ 0xb120…b140 80 63 6f 6e 6e 65 63 74 65 64 20 74 6f 20 74 68 65 20 64 69 73 70 6c 61 79 20 75 6e 69 74 2c 20 ┆ connected to the display unit, ┆ 0xb140…b160 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 6d 65 73 73 61 67 65 20 69 73 20 0a 19 89 80 80 64 69 ┆the following message is di┆ 0xb160…b180 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 20 20 20 20 20 20 20 20 20 ┆splayed: ┆ 0xb180…b1a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xb1a0…b1c0 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 a1 84 52 43 38 35 35 20 ┆ RC855 ┆ 0xb1c0…b1e0 2d 20 49 6e 73 65 72 74 20 64 69 73 6b 65 74 74 65 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆- Insert diskette ┆ 0xb1e0…b200 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4e 6f ┆ No┆ 0xb200…b220 (89,) 74 65 20 74 68 61 74 20 74 68 65 20 61 62 6f 76 65 20 6d 65 73 73 61 67 65 20 69 73 20 61 6c 73 ┆te that the above message is als┆ 0xb220…b240 6f 20 64 69 73 70 6c 61 79 65 64 2c 20 69 66 20 74 68 65 20 0a 19 89 80 80 6f 70 65 72 61 74 6f ┆o displayed, if the operato┆ 0xb240…b260 72 20 70 72 65 73 73 65 73 20 22 46 22 20 28 6f 72 20 4c 44 20 3d 20 36 29 20 61 6e 64 20 74 68 ┆r presses "F" (or LD = 6) and th┆ 0xb260…b280 65 20 43 50 2f 4d 20 73 79 73 74 65 6d 20 0a 19 89 80 80 64 69 73 6b 65 74 74 65 20 69 73 20 6e ┆e CP/M system diskette is n┆ 0xb280…b2a0 6f 74 20 70 72 6f 70 65 72 6c 79 20 69 6e 73 65 72 74 65 64 20 69 6e 20 74 68 65 20 64 69 73 6b ┆ot properly inserted in the disk┆ 0xb2a0…b2c0 65 74 74 65 20 64 72 69 76 65 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4f 6e 20 72 65 63 65 ┆ette drive. On rece┆ 0xb2c0…b2e0 69 76 69 6e 67 20 65 69 74 68 65 72 20 6f 66 20 74 68 65 20 6d 65 73 73 61 67 65 73 20 61 62 6f ┆iving either of the messages abo┆ 0xb2e0…b300 76 65 2c 20 74 68 65 20 6f 70 65 72 61 74 6f 72 20 0a 19 8a 80 80 73 68 6f 75 6c 64 20 63 6f 72 ┆ve, the operator should cor┆ 0xb300…b320 72 65 63 74 20 61 6e 79 20 6f 62 76 69 6f 75 73 20 65 72 72 6f 72 20 61 6e 64 20 72 65 73 65 74 ┆rect any obvious error and reset┆ 0xb320…b340 20 74 68 65 20 0a 19 8a 80 80 74 65 72 6d 69 6e 61 6c 2e 20 49 66 20 74 68 65 20 65 72 72 6f 72 ┆ the terminal. If the error┆ 0xb340…b360 20 70 65 72 73 69 73 74 73 2c 20 68 65 20 73 68 6f 75 6c 64 20 72 65 70 6f 72 74 20 69 74 2e 0d ┆ persists, he should report it. ┆ 0xb360…b380 0a 0d 0a 0d 0a 84 b0 a1 33 2e 33 2e 33 20 20 20 20 52 63 43 69 72 63 75 69 74 20 28 4c 6f 63 61 ┆ 3.3.3 RcCircuit (Loca┆ 0xb380…b3a0 6c 20 54 65 72 6d 69 6e 61 6c 20 4e 65 74 77 6f 72 6b 29 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 ┆l Terminal Network) ┆ 0xb3a0…b3c0 84 50 72 6f 67 72 61 6d 20 6c 6f 61 64 69 6e 67 20 69 6e 20 52 63 43 69 72 63 75 69 74 20 64 65 ┆ Program loading in RcCircuit de┆ 0xb3c0…b3e0 66 61 75 6c 74 20 6d 6f 64 65 20 6f 72 20 52 63 43 69 72 63 75 69 74 20 0a 19 89 80 80 6d 65 6e ┆fault mode or RcCircuit men┆ 0xb3e0…b400 75 20 6d 6f 64 65 20 74 61 6b 65 73 20 70 6c 61 63 65 20 69 6e 20 74 68 72 65 65 20 73 74 61 67 ┆u mode takes place in three stag┆ 0xb400…b420 (90,) 65 73 3a 20 6d 65 6e 75 20 74 72 61 6e 73 6d 69 73 80 0a 19 89 80 80 73 69 6f 6e 2c 20 70 72 6f ┆es: menu transmis sion, pro┆ 0xb420…b440 67 72 61 6d 20 73 65 6c 65 63 74 69 6f 6e 2c 20 61 6e 64 20 70 72 6f 67 72 61 6d 20 6c 6f 61 64 ┆gram selection, and program load┆ 0xb440…b460 69 6e 67 2e 0d 0a 0d 0a 0d 0a 84 b0 a1 33 2e 33 2e 33 2e 31 20 20 4d 65 6e 75 20 54 72 61 6e 73 ┆ing. 3.3.3.1 Menu Trans┆ 0xb460…b480 6d 69 73 73 69 6f 6e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 41 73 20 73 6f 6f 6e 20 61 73 20 ┆mission As soon as ┆ 0xb480…b4a0 74 68 65 20 74 65 72 6d 69 6e 61 6c 20 63 6f 6d 70 6c 65 74 65 73 20 69 74 73 20 70 6f 77 65 72 ┆the terminal completes its power┆ 0xb4a0…b4c0 2d 75 70 20 73 65 6c 66 74 65 73 74 20 0a 19 89 80 80 61 6e 64 20 75 6e 74 69 6c 20 69 74 73 20 ┆-up selftest and until its ┆ 0xb4c0…b4e0 6d 65 6e 75 20 69 73 20 72 65 63 65 69 76 65 64 20 66 72 6f 6d 20 74 68 65 20 52 43 38 39 30 20 ┆menu is received from the RC890 ┆ 0xb4e0…b500 63 6f 6e 74 72 6f 6c 20 0a 19 89 80 80 75 6e 69 74 20 28 43 55 29 2c 20 74 68 65 20 66 6f 6c 6c ┆control unit (CU), the foll┆ 0xb500…b520 6f 77 69 6e 67 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 8c ┆owing message is displayed: ┆ 0xb520…b540 83 d8 0a 20 20 20 20 20 20 20 20 20 84 a1 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xb540…b560 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xb560…b580 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 20 20 20 20 20 20 20 20 ┆ RC855 ┆ 0xb580…b5a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xb5a0…b5c0 20 20 20 20 20 20 20 4c 43 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 e1 b0 45 72 72 6f 72 20 ┆ LC Error ┆ 0xb5c0…b5e0 48 61 6e 64 6c 69 6e 67 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 6d 65 6e 75 20 74 ┆Handling The menu t┆ 0xb5e0…b600 72 61 6e 73 6d 69 73 73 69 6f 6e 20 74 69 6d 65 20 69 73 20 61 70 70 72 6f 78 69 6d 61 74 65 6c ┆ransmission time is approximatel┆ 0xb600…b620 (91,) 79 20 35 20 73 65 63 6f 6e 64 73 2e 20 0a 19 89 80 80 49 66 20 74 68 65 20 61 62 6f 76 65 20 6d ┆y 5 seconds. If the above m┆ 0xb620…b640 65 73 73 61 67 65 20 63 6f 6e 74 69 6e 75 65 73 20 74 6f 20 62 65 20 64 69 73 70 6c 61 79 65 64 ┆essage continues to be displayed┆ 0xb640…b660 2c 20 74 68 65 20 0a 19 89 80 80 52 43 38 35 35 20 6f 70 65 72 61 74 6f 72 20 73 68 6f 75 6c 64 ┆, the RC855 operator should┆ 0xb660…b680 20 63 68 65 63 6b 20 68 69 73 20 6f 77 6e 20 52 63 43 69 72 63 75 69 74 20 63 61 62 6c 65 20 0a ┆ check his own RcCircuit cable ┆ 0xb680…b6a0 19 89 80 80 63 6f 6e 6e 65 63 74 69 6f 6e 20 61 6e 64 20 74 68 65 20 73 74 61 74 65 20 6f 66 20 ┆ connection and the state of ┆ 0xb6a0…b6c0 74 68 65 20 52 43 38 39 30 2c 20 63 6f 72 72 65 63 74 20 61 6e 79 20 0a 19 89 80 80 6f 62 76 69 ┆the RC890, correct any obvi┆ 0xb6c0…b6e0 6f 75 73 20 65 72 72 6f 72 2c 20 61 6e 64 20 72 65 73 65 74 20 74 68 65 20 74 65 72 6d 69 6e 61 ┆ous error, and reset the termina┆ 0xb6e0…b700 6c 20 28 62 79 20 6d 65 61 6e 73 20 6f 66 20 74 68 65 20 0a 19 89 80 80 6b 65 79 20 63 6f 6d 62 ┆l (by means of the key comb┆ 0xb700…b720 69 6e 61 74 69 6f 6e 20 43 54 52 4c 20 43 4c 45 41 52 29 2e 20 49 66 20 74 68 65 20 65 72 72 6f ┆ination CTRL CLEAR). If the erro┆ 0xb720…b740 72 20 70 65 72 73 69 73 74 73 2c 20 68 65 20 0a 19 89 80 80 73 68 6f 75 6c 64 20 72 65 70 6f 72 ┆r persists, he should repor┆ 0xb740…b760 74 20 69 74 2e 0d 0a 0d 0a 0d 0a 84 a1 b0 33 2e 33 2e 33 2e 32 20 20 50 72 6f 67 72 61 6d 20 53 ┆t it. 3.3.3.2 Program S┆ 0xb760…b780 65 6c 65 63 74 69 6f 6e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 57 68 65 6e 20 74 68 65 20 74 ┆election When the t┆ 0xb780…b7a0 65 72 6d 69 6e 61 6c 20 68 61 73 20 72 65 63 65 69 76 65 64 20 69 74 73 20 6d 65 6e 75 20 66 72 ┆erminal has received its menu fr┆ 0xb7a0…b7c0 6f 6d 20 74 68 65 20 52 43 38 39 30 20 0a 19 89 80 80 63 6f 6e 74 72 6f 6c 20 75 6e 69 74 20 28 ┆om the RC890 control unit (┆ 0xb7c0…b7e0 43 55 29 2c 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 ┆CU), the following message is di┆ 0xb7e0…b800 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 20 20 20 20 20 20 20 20 20 ┆splayed: ┆ 0xb800…b820 (92,) 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xb820…b840 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 ┆ RC855 ┆ 0xb840…b860 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xb860…b880 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 ┆ Th┆ 0xb880…b8a0 65 20 61 62 6f 76 65 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 73 70 6c 61 79 65 64 20 64 75 72 ┆e above message is displayed dur┆ 0xb8a0…b8c0 69 6e 67 20 61 75 74 6f 6d 61 74 69 63 20 73 65 6c 65 63 80 0a 19 89 80 80 74 69 6f 6e 20 6f 66 ┆ing automatic selec tion of┆ 0xb8c0…b8e0 20 74 68 65 20 74 65 72 6d 69 6e 61 6c 27 73 20 64 65 66 61 75 6c 74 20 61 70 70 6c 69 63 61 74 ┆ the terminal's default applicat┆ 0xb8e0…b900 69 6f 6e 20 70 72 6f 67 72 61 6d 2c 20 69 6e 20 0a 19 89 80 80 77 68 69 63 68 20 63 61 73 65 20 ┆ion program, in which case ┆ 0xb900…b920 74 68 65 20 6d 65 6e 75 20 69 73 20 6e 6f 74 20 64 69 73 70 6c 61 79 65 64 2c 20 6f 72 20 77 68 ┆the menu is not displayed, or wh┆ 0xb920…b940 69 6c 65 20 74 68 65 20 52 43 38 35 35 20 0a 19 89 80 80 6f 70 65 72 61 74 6f 72 20 69 73 20 73 ┆ile the RC855 operator is s┆ 0xb940…b960 65 6c 65 63 74 69 6e 67 20 61 6e 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 20 ┆electing an application program ┆ 0xb960…b980 66 72 6f 6d 20 74 68 65 20 0a 19 89 80 80 64 69 73 70 6c 61 79 65 64 20 6d 65 6e 75 2e 20 54 68 ┆from the displayed menu. Th┆ 0xb980…b9a0 65 20 6d 65 6e 75 20 69 73 20 64 69 73 70 6c 61 79 65 64 20 69 6e 20 52 63 43 69 72 63 75 69 74 ┆e menu is displayed in RcCircuit┆ 0xb9a0…b9c0 20 6d 65 6e 75 20 0a 19 89 80 80 6d 6f 64 65 20 61 6e 64 20 77 68 65 6e 20 6e 6f 20 64 65 66 61 ┆ menu mode and when no defa┆ 0xb9c0…b9e0 75 6c 74 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 20 68 61 73 20 62 65 65 6e ┆ult application program has been┆ 0xb9e0…ba00 20 0a 19 89 80 80 73 70 65 63 69 66 69 65 64 20 66 6f 72 20 74 68 65 20 74 65 72 6d 69 6e 61 6c ┆ specified for the terminal┆ 0xba00…ba20 (93,) 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 e1 b0 45 72 72 6f 72 20 48 61 6e 64 6c 69 6e 67 ┆. Error Handling┆ 0xba20…ba40 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 49 66 20 74 68 65 20 6f 70 65 72 61 74 6f 72 2c 20 69 ┆ If the operator, i┆ 0xba40…ba60 6e 20 73 65 6c 65 63 74 69 6e 67 20 61 6e 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 ┆n selecting an application progr┆ 0xba60…ba80 61 6d 2c 20 0a 19 89 80 80 70 72 65 73 73 65 73 20 61 20 6b 65 79 20 6e 6f 74 20 61 73 73 6f 63 ┆am, presses a key not assoc┆ 0xba80…baa0 69 61 74 65 64 20 77 69 74 68 20 61 20 70 72 6f 67 72 61 6d 20 6f 6e 20 74 68 65 20 6d 65 6e 75 ┆iated with a program on the menu┆ 0xbaa0…bac0 2c 20 0a 19 89 80 80 74 68 65 20 6b 65 79 62 6f 61 72 64 20 65 6d 69 74 73 20 61 6e 20 61 6c 61 ┆, the keyboard emits an ala┆ 0xbac0…bae0 72 6d 20 62 65 65 70 2e 20 4e 6f 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 73 80 0a 19 89 80 80 ┆rm beep. No message is dis ┆ 0xbae0…bb00 70 6c 61 79 65 64 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 6f 20 63 6f 72 72 65 63 74 20 ┆played. To correct ┆ 0xbb00…bb20 73 75 63 68 20 61 6e 20 65 72 72 6f 72 2c 20 74 68 65 20 6f 70 65 72 61 74 6f 72 20 6e 65 65 64 ┆such an error, the operator need┆ 0xbb20…bb40 20 6f 6e 6c 79 20 70 72 65 73 73 20 0a 19 89 80 80 61 6e 6f 74 68 65 72 20 6b 65 79 2e 0d 0a 0d ┆ only press another key. ┆ 0xbb40…bb60 0a 20 20 20 20 20 20 20 20 20 84 49 66 20 74 68 65 20 52 63 43 69 72 63 75 69 74 20 63 6f 6e 6e ┆ If the RcCircuit conn┆ 0xbb60…bb80 65 63 74 69 6f 6e 20 74 6f 20 74 68 65 20 52 43 38 39 30 20 69 73 20 6c 6f 73 74 2c 20 74 68 65 ┆ection to the RC890 is lost, the┆ 0xbb80…bba0 20 0a 19 89 80 80 66 6f 6c 6c 6f 77 69 6e 67 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 73 70 6c ┆ following message is displ┆ 0xbba0…bbc0 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 20 20 20 20 20 20 20 20 20 20 20 20 ┆ayed: ┆ 0xbbc0…bbe0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xbbe0…bc00 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 43 55 ┆ RC855 CU┆ 0xbc00…bc20 (94,) 20 64 69 73 63 6f 6e 6e 65 63 74 65 64 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ disconnected ┆ 0xbc20…bc40 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4f 6e 20 ┆ On ┆ 0xbc40…bc60 74 68 65 20 65 72 72 6f 72 20 61 62 6f 76 65 2c 20 74 68 65 20 52 43 38 35 35 20 6f 70 65 72 61 ┆the error above, the RC855 opera┆ 0xbc60…bc80 74 6f 72 20 73 68 6f 75 6c 64 20 63 68 65 63 6b 20 68 69 73 20 0a 19 89 80 80 6f 77 6e 20 52 63 ┆tor should check his own Rc┆ 0xbc80…bca0 43 69 72 63 75 69 74 20 63 61 62 6c 65 20 63 6f 6e 6e 65 63 74 69 6f 6e 20 61 6e 64 20 74 68 65 ┆Circuit cable connection and the┆ 0xbca0…bcc0 20 73 74 61 74 65 20 6f 66 20 74 68 65 20 0a 19 89 80 80 52 43 38 39 30 2c 20 63 6f 72 72 65 63 ┆ state of the RC890, correc┆ 0xbcc0…bce0 74 20 61 6e 79 20 6f 62 76 69 6f 75 73 20 65 72 72 6f 72 2c 20 61 6e 64 20 72 65 73 65 74 20 74 ┆t any obvious error, and reset t┆ 0xbce0…bd00 68 65 20 74 65 72 6d 69 6e 61 6c 20 0a 19 89 80 80 28 43 54 52 4c 20 43 4c 45 41 52 29 2e 20 49 ┆he terminal (CTRL CLEAR). I┆ 0xbd00…bd20 66 20 74 68 65 20 65 72 72 6f 72 20 70 65 72 73 69 73 74 73 2c 20 68 65 20 73 68 6f 75 6c 64 20 ┆f the error persists, he should ┆ 0xbd20…bd40 72 65 70 6f 72 74 20 0a 19 89 80 80 69 74 2e 0d 0a 0d 0a 0d 0a a1 a1 b0 33 2e 33 2e 33 2e 33 20 ┆report it. 3.3.3.3 ┆ 0xbd40…bd60 20 50 72 6f 67 72 61 6d 20 4c 6f 61 64 69 6e 67 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 49 66 ┆ Program Loading If┆ 0xbd60…bd80 20 74 68 65 20 73 65 6c 65 63 74 65 64 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 ┆ the selected application progra┆ 0xbd80…bda0 6d 20 69 73 20 74 6f 20 62 65 20 6c 6f 61 64 65 64 20 0a 19 89 80 80 6c 6f 63 61 6c 6c 79 20 66 ┆m is to be loaded locally f┆ 0xbda0…bdc0 72 6f 6d 20 61 20 64 69 73 6b 20 73 79 73 74 65 6d 2c 20 70 72 6f 67 72 61 6d 20 6c 6f 61 64 69 ┆rom a disk system, program loadi┆ 0xbdc0…bde0 6e 67 20 74 61 6b 65 73 20 70 6c 61 63 65 20 0a 19 89 80 80 61 73 20 64 65 73 63 72 69 62 65 64 ┆ng takes place as described┆ 0xbde0…be00 20 69 6e 20 53 65 63 74 69 6f 6e 20 33 2e 33 2e 32 2e 0d 0a 0d 0a 8c 83 d8 0a 20 20 20 20 20 20 ┆ in Section 3.3.2. ┆ 0xbe00…be20 (95,) 20 20 20 84 49 66 20 74 68 65 20 73 65 6c 65 63 74 65 64 20 61 70 70 6c 69 63 61 74 69 6f 6e 20 ┆ If the selected application ┆ 0xbe20…be40 70 72 6f 67 72 61 6d 20 69 73 20 74 6f 20 62 65 20 6c 6f 61 64 65 64 20 0a 19 89 80 80 64 6f 77 ┆program is to be loaded dow┆ 0xbe40…be60 6e 6c 69 6e 65 20 66 72 6f 6d 20 74 68 65 20 52 43 38 39 30 20 63 6f 6e 74 72 6f 6c 20 75 6e 69 ┆nline from the RC890 control uni┆ 0xbe60…be80 74 20 28 43 55 29 2c 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 0a 19 89 80 80 6d 65 73 73 61 ┆t (CU), the following messa┆ 0xbe80…bea0 67 65 20 69 73 20 64 69 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 20 ┆ge is displayed: ┆ 0xbea0…bec0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xbec0…bee0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xbee0…bf00 84 a1 52 43 38 35 35 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ RC855 ┆ 0xbf00…bf20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4c 41 0d 0a 0d 0a 20 20 20 20 ┆ LA ┆ 0xbf20…bf40 20 20 20 20 20 84 84 4e 6f 74 65 20 74 68 61 74 20 74 68 65 20 70 72 6f 67 72 61 6d 20 6c 6f 61 ┆ Note that the program loa┆ 0xbf40…bf60 64 20 74 69 6d 65 20 69 73 20 61 70 70 72 6f 78 69 6d 61 74 65 6c 79 20 31 30 20 0a 19 89 80 80 ┆d time is approximately 10 ┆ 0xbf60…bf80 73 65 63 6f 6e 64 73 20 28 66 72 6f 6d 20 74 68 65 20 6d 6f 6d 65 6e 74 20 6f 66 20 70 72 6f 67 ┆seconds (from the moment of prog┆ 0xbf80…bfa0 72 61 6d 20 73 65 6c 65 63 74 69 6f 6e 29 20 77 68 65 6e 20 61 20 0a 19 89 80 80 73 69 6e 67 6c ┆ram selection) when a singl┆ 0xbfa0…bfc0 65 20 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 20 69 73 20 74 6f 20 62 65 20 6c 6f 61 64 65 64 ┆e RC855 terminal is to be loaded┆ 0xbfc0…bfe0 2e 20 57 68 65 6e 20 73 65 76 65 72 61 6c 20 0a 19 89 80 80 74 65 72 6d 69 6e 61 6c 73 20 61 72 ┆. When several terminals ar┆ 0xbfe0…c000 65 20 74 6f 20 62 65 20 6c 6f 61 64 65 64 20 73 69 6d 75 6c 74 61 6e 65 6f 75 73 6c 79 2c 20 74 ┆e to be loaded simultaneously, t┆ 0xc000…c020 (96,) 68 65 20 70 72 6f 67 72 61 6d 20 0a 19 89 80 80 6c 6f 61 64 20 74 69 6d 65 20 6d 61 79 20 61 70 ┆he program load time may ap┆ 0xc020…c040 70 72 6f 61 63 68 20 6f 6e 65 20 6d 69 6e 75 74 65 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 ┆proach one minute. ┆ 0xc040…c060 a1 e1 b0 45 72 72 6f 72 20 48 61 6e 64 6c 69 6e 67 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 49 ┆ Error Handling I┆ 0xc060…c080 66 20 74 68 65 20 52 63 43 69 72 63 75 69 74 20 63 6f 6e 6e 65 63 74 69 6f 6e 20 74 6f 20 74 68 ┆f the RcCircuit connection to th┆ 0xc080…c0a0 65 20 52 43 38 39 30 20 69 73 20 6c 6f 73 74 2c 20 74 68 65 20 0a 19 89 80 80 66 6f 6c 6c 6f 77 ┆e RC890 is lost, the follow┆ 0xc0a0…c0c0 69 6e 67 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 ┆ing message is displayed: ┆ 0xc0c0…c0e0 20 20 20 20 20 20 84 a1 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xc0e0…c100 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a ┆ ┆ 0xc100…c120 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 43 55 20 64 69 73 63 6f 6e 6e 65 63 74 65 64 ┆ RC855 CU disconnected┆ 0xc120…c140 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4c ┆ L┆ 0xc140…c160 41 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4f 6e 20 74 68 65 20 65 72 72 6f 72 20 61 62 6f 76 ┆A On the error abov┆ 0xc160…c180 65 2c 20 74 68 65 20 52 43 38 35 35 20 6f 70 65 72 61 74 6f 72 20 73 68 6f 75 6c 64 20 63 68 65 ┆e, the RC855 operator should che┆ 0xc180…c1a0 63 6b 20 68 69 73 20 0a 19 89 80 80 6f 77 6e 20 52 63 43 69 72 63 75 69 74 20 63 61 62 6c 65 20 ┆ck his own RcCircuit cable ┆ 0xc1a0…c1c0 63 6f 6e 6e 65 63 74 69 6f 6e 20 61 6e 64 20 74 68 65 20 73 74 61 74 65 20 6f 66 20 74 68 65 20 ┆connection and the state of the ┆ 0xc1c0…c1e0 0a 19 89 80 80 52 43 38 39 30 2c 20 63 6f 72 72 65 63 74 20 61 6e 79 20 6f 62 76 69 6f 75 73 20 ┆ RC890, correct any obvious ┆ 0xc1e0…c200 65 72 72 6f 72 2c 20 61 6e 64 20 72 65 73 65 74 20 74 68 65 20 74 65 72 6d 69 6e 61 6c 20 0a 19 ┆error, and reset the terminal ┆ 0xc200…c220 (97,) 89 80 80 28 43 54 52 4c 20 43 4c 45 41 52 29 2e 20 49 66 20 74 68 65 20 65 72 72 6f 72 20 70 65 ┆ (CTRL CLEAR). If the error pe┆ 0xc220…c240 72 73 69 73 74 73 2c 20 68 65 20 73 68 6f 75 6c 64 20 72 65 70 6f 72 74 20 0a 19 89 80 80 69 74 ┆rsists, he should report it┆ 0xc240…c260 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 49 66 20 74 68 65 20 73 65 6c 65 63 74 65 64 20 61 ┆. If the selected a┆ 0xc260…c280 70 70 6c 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 20 69 73 20 6e 6f 74 20 70 72 65 73 65 6e ┆pplication program is not presen┆ 0xc280…c2a0 74 20 6f 6e 20 0a 19 89 80 80 74 68 65 20 52 43 38 39 30 20 64 69 73 6b 65 74 74 65 2c 20 74 68 ┆t on the RC890 diskette, th┆ 0xc2a0…c2c0 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 73 70 6c 61 79 65 64 ┆e following message is displayed┆ 0xc2c0…c2e0 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆: ┆ 0xc2e0…c300 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xc300…c320 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 43 55 20 70 72 6f 67 ┆ RC855 CU prog┆ 0xc320…c340 72 61 6d 20 6e 6f 74 20 66 6f 75 6e 64 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ram not found ┆ 0xc340…c360 20 20 20 20 20 20 20 4c 41 0d 0a 20 0d 0a 20 20 20 20 20 20 20 20 20 84 49 66 20 61 6e 20 65 72 ┆ LA If an er┆ 0xc360…c380 72 6f 72 20 69 6e 76 6f 6c 76 69 6e 67 20 74 68 65 20 52 43 38 39 30 20 64 69 73 6b 65 74 74 65 ┆ror involving the RC890 diskette┆ 0xc380…c3a0 20 6f 63 63 75 72 73 2c 20 74 68 65 20 0a 19 89 80 80 66 6f 6c 6c 6f 77 69 6e 67 20 6d 65 73 73 ┆ occurs, the following mess┆ 0xc3a0…c3c0 61 67 65 20 69 73 20 64 69 73 70 6c 61 79 65 64 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 ┆age is displayed: ┆ 0xc3c0…c3e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xc3e0…c400 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 ┆ ┆ 0xc400…c420 (98,) 20 84 a1 52 43 38 35 35 20 43 55 20 64 69 73 6b 65 74 74 65 20 65 72 72 6f 72 20 20 20 20 20 20 ┆ RC855 CU diskette error ┆ 0xc420…c440 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4c 41 0d 0a 0d 0a 20 20 20 ┆ LA ┆ 0xc440…c460 20 20 20 20 20 20 84 84 4f 6e 20 65 69 74 68 65 72 20 6f 66 20 74 68 65 20 65 72 72 6f 72 73 20 ┆ On either of the errors ┆ 0xc460…c480 61 62 6f 76 65 2c 20 74 68 65 20 52 43 38 35 35 20 6f 70 65 72 61 74 6f 72 20 73 68 6f 75 6c 64 ┆above, the RC855 operator should┆ 0xc480…c4a0 20 0a 19 89 80 80 63 68 65 63 6b 20 74 68 65 20 73 74 61 74 65 20 6f 66 20 74 68 65 20 52 43 38 ┆ check the state of the RC8┆ 0xc4a0…c4c0 39 30 2c 20 63 6f 72 72 65 63 74 20 61 6e 79 20 6f 62 76 69 6f 75 73 20 65 72 72 6f 72 2c 20 0a ┆90, correct any obvious error, ┆ 0xc4c0…c4e0 19 89 80 80 61 6e 64 20 72 65 73 65 74 20 74 68 65 20 74 65 72 6d 69 6e 61 6c 20 28 43 54 52 4c ┆ and reset the terminal (CTRL┆ 0xc4e0…c500 20 43 4c 45 41 52 29 2e 20 20 49 66 20 74 68 65 20 65 72 72 6f 72 20 0a 19 89 80 80 70 65 72 73 ┆ CLEAR). If the error pers┆ 0xc500…c520 69 73 74 73 2c 20 68 65 20 73 68 6f 75 6c 64 20 72 65 70 6f 72 74 20 69 74 2e 0d 0a 0d 0a 20 20 ┆ists, he should report it. ┆ 0xc520…c540 20 20 20 20 20 20 20 84 49 66 20 61 20 63 68 65 63 6b 73 75 6d 20 65 72 72 6f 72 20 69 73 20 64 ┆ If a checksum error is d┆ 0xc540…c560 65 74 65 63 74 65 64 20 69 6e 20 61 20 70 72 6f 67 72 61 6d 20 69 6d 61 67 65 20 0a 19 89 80 80 ┆etected in a program image ┆ 0xc560…c580 6c 6f 61 64 65 64 20 66 72 6f 6d 20 74 68 65 20 52 43 38 39 30 2c 20 74 68 65 20 66 6f 6c 6c 6f ┆loaded from the RC890, the follo┆ 0xc580…c5a0 77 69 6e 67 20 6d 65 73 73 61 67 65 20 69 73 20 64 69 73 80 0a 19 89 80 80 70 6c 61 79 65 64 3a ┆wing message is dis played:┆ 0xc5a0…c5c0 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xc5c0…c5e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xc5e0…c600 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 43 68 65 63 6b 73 75 6d ┆ RC855 Checksum┆ 0xc600…c620 (99,) 20 65 72 72 6f 72 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ error ┆ 0xc620…c640 20 20 20 20 20 20 4c 41 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4f 6e 20 61 20 63 68 65 63 6b ┆ LA On a check┆ 0xc640…c660 73 75 6d 20 65 72 72 6f 72 2c 20 74 68 65 20 6f 70 65 72 61 74 6f 72 20 73 68 6f 75 6c 64 20 72 ┆sum error, the operator should r┆ 0xc660…c680 65 73 65 74 20 74 68 65 20 0a 19 89 80 80 74 65 72 6d 69 6e 61 6c 20 28 43 54 52 4c 20 43 4c 45 ┆eset the terminal (CTRL CLE┆ 0xc680…c6a0 41 52 29 2e 20 49 66 20 74 68 65 20 65 72 72 6f 72 20 70 65 72 73 69 73 74 73 2c 20 68 65 20 73 ┆AR). If the error persists, he s┆ 0xc6a0…c6bb 68 6f 75 6c 64 20 0a 19 89 80 80 72 65 70 6f 72 74 20 69 74 2e 0d 0a 0d 0a 0d 0a ┆hould report it. ┆ 0xc6bb…c6be FormFeed { 0xc6bb…c6be 0c 83 c0 ┆ ┆ 0xc6bb…c6be } 0xc6be…c6c0 0a a1 ┆ ┆ 0xc6c0…c6e0 b0 33 2e 34 20 20 20 20 20 20 41 70 70 6c 69 63 61 74 69 6f 6e 20 50 72 6f 67 72 61 6d 20 49 64 ┆ 3.4 Application Program Id┆ 0xc6e0…c700 65 6e 74 69 66 69 63 61 74 69 6f 6e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4f 6e 20 74 68 65 ┆entification On the┆ 0xc700…c720 20 73 75 63 63 65 73 73 66 75 6c 20 63 6f 6d 70 6c 65 74 69 6f 6e 20 6f 66 20 70 72 6f 67 72 61 ┆ successful completion of progra┆ 0xc720…c740 6d 20 6c 6f 61 64 69 6e 67 2c 20 74 68 65 20 0a 19 89 80 80 52 43 38 35 35 20 61 70 70 6c 69 63 ┆m loading, the RC855 applic┆ 0xc740…c760 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 20 69 73 20 73 74 61 72 74 65 64 20 61 6e 64 20 69 6d 6d ┆ation program is started and imm┆ 0xc760…c780 65 64 69 61 74 65 6c 79 20 0a 19 89 80 80 69 64 65 6e 74 69 66 69 65 73 20 69 74 73 65 6c 66 2e ┆ediately identifies itself.┆ 0xc780…c7a0 20 48 65 72 65 20 69 73 20 6f 6e 65 20 65 78 61 6d 70 6c 65 20 28 64 69 73 70 6c 61 79 65 64 20 ┆ Here is one example (displayed ┆ 0xc7a0…c7c0 6f 6e 20 74 68 65 20 0a 19 89 80 80 73 74 61 74 75 73 20 6c 69 6e 65 29 3a 0d 0a 0d 0a 20 20 20 ┆on the status line): ┆ 0xc7c0…c7e0 20 20 20 20 20 20 84 a1 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xc7e0…c800 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d 0a 20 ┆ ┆ 0xc800…c820 (100,) 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 49 42 4d 20 33 32 37 30 20 42 53 43 20 44 69 73 ┆ RC855 IBM 3270 BSC Dis┆ 0xc820…c840 70 6c 61 79 20 53 74 61 74 69 6f 6e 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 0d ┆play Station ┆ 0xc840…c860 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 48 65 72 65 20 69 73 20 61 6e 6f 74 68 65 72 20 65 78 61 ┆ Here is another exa┆ 0xc860…c880 6d 70 6c 65 20 28 64 69 73 70 6c 61 79 65 64 20 6f 6e 20 74 68 65 20 66 69 72 73 74 20 6c 69 6e ┆mple (displayed on the first lin┆ 0xc880…c8a0 65 29 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 09 84 52 43 38 35 35 20 35 36 6b 20 43 50 2f 4d ┆e): RC855 56k CP/M┆ 0xc8a0…c8c0 20 32 2e 32 20 72 65 6c 2e 20 32 2e 32 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 66 ┆ 2.2 rel. 2.2 The f┆ 0xc8c0…c8e0 75 72 74 68 65 72 20 6f 70 65 72 61 74 69 6f 6e 20 6f 66 20 74 68 65 20 52 43 38 35 35 20 74 65 ┆urther operation of the RC855 te┆ 0xc8e0…c900 72 6d 69 6e 61 6c 20 69 73 20 64 65 73 63 72 69 62 65 64 20 0a 19 89 80 80 69 6e 20 74 68 65 20 ┆rminal is described in the ┆ 0xc900…c920 6f 70 65 72 61 74 69 6e 67 20 67 75 69 64 65 20 6f 72 20 75 73 65 72 27 73 20 67 75 69 64 65 20 ┆operating guide or user's guide ┆ 0xc920…c940 66 6f 72 20 74 68 65 20 72 65 6c 65 76 61 6e 74 20 0a 19 89 80 80 52 43 38 35 35 20 61 70 70 6c ┆for the relevant RC855 appl┆ 0xc940…c960 69 63 61 74 69 6f 6e 20 70 72 6f 67 72 61 6d 20 28 28 33 29 2c 20 28 38 29 2c 20 28 39 29 2c 20 ┆ication program ((3), (8), (9), ┆ 0xc960…c970 61 6e 64 20 28 31 30 29 29 2e 0d 0a 0d 0a 0d 0a ┆and (10)). ┆ 0xc970…c973 FormFeed { 0xc970…c973 0c 81 98 ┆ ┆ 0xc970…c973 } 0xc973…c980 0a a1 b0 34 2e 20 20 20 20 20 20 20 4d ┆ 4. M┆ 0xc980…c9a0 49 53 43 45 4c 4c 41 4e 59 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4f 72 64 69 6e 61 72 79 20 ┆ISCELLANY Ordinary ┆ 0xc9a0…c9c0 6d 61 69 6e 74 65 6e 61 6e 63 65 2c 20 74 68 65 20 63 61 72 65 20 6f 66 20 64 69 73 6b 65 74 74 ┆maintenance, the care of diskett┆ 0xc9c0…c9e0 65 73 2c 20 61 6e 64 20 72 65 6c 61 74 65 64 20 0a 19 89 80 80 6d 61 74 74 65 72 73 20 61 72 65 ┆es, and related matters are┆ 0xc9e0…ca00 20 74 68 65 20 73 75 62 6a 65 63 74 20 6f 66 20 74 68 69 73 20 66 69 6e 61 6c 20 63 68 61 70 74 ┆ the subject of this final chapt┆ 0xca00…ca20 (101,) 65 72 2e 0d 0a 0d 0a 0d 0a a1 b0 34 2e 31 20 20 20 20 20 20 4d 61 69 6e 74 65 6e 61 6e 63 65 0d ┆er. 4.1 Maintenance ┆ 0xca20…ca40 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 64 61 79 2d 74 6f 2d 64 61 79 20 6d 61 69 6e ┆ The day-to-day main┆ 0xca40…ca60 74 65 6e 61 6e 63 65 20 6f 66 20 74 68 65 20 52 43 38 35 35 20 74 65 72 6d 69 6e 61 6c 20 69 73 ┆tenance of the RC855 terminal is┆ 0xca60…ca80 20 0a 19 89 80 80 63 6f 6e 66 69 6e 65 64 20 74 6f 20 63 6c 65 61 6e 69 6e 67 2e 20 4f 63 63 61 ┆ confined to cleaning. Occa┆ 0xca80…caa0 73 69 6f 6e 61 6c 6c 79 20 74 68 65 20 66 75 73 65 20 69 6e 20 74 68 65 20 70 6f 77 65 72 20 0a ┆sionally the fuse in the power ┆ 0xcaa0…cac0 19 89 80 80 63 61 62 6c 65 20 63 6f 6e 6e 65 63 74 6f 72 20 6d 61 79 20 6e 65 65 64 20 74 6f 20 ┆ cable connector may need to ┆ 0xcac0…cae0 62 65 20 72 65 70 6c 61 63 65 64 2e 0d 0a 0d 0a 0d 0a a1 b0 34 2e 31 2e 31 20 20 20 20 43 6c 65 ┆be replaced. 4.1.1 Cle┆ 0xcae0…cb00 61 6e 69 6e 67 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 52 65 6d 6f 76 65 20 70 6f 77 65 72 ┆aning Remove power┆ 0xcb00…cb20 e1 20 66 72 6f 6d 20 74 68 65 20 74 65 72 6d 69 6e 61 6c 2c 20 64 69 73 6b 20 73 79 73 74 65 6d ┆ from the terminal, disk system┆ 0xcb20…cb40 2c 20 61 6e 64 20 70 72 69 6e 74 65 72 20 0a 19 89 80 80 62 65 66 6f 72 65 20 70 72 6f 63 65 65 ┆, and printer before procee┆ 0xcb40…cb60 64 69 6e 67 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 55 73 65 20 70 6c 61 69 6e 2c 20 63 6c ┆ding. Use plain, cl┆ 0xcb60…cb80 65 61 6e 20 77 61 74 65 72 2c 20 70 6f 73 73 69 62 6c 79 20 63 6f 6e 74 61 69 6e 69 6e 67 20 61 ┆ean water, possibly containing a┆ 0xcb80…cba0 20 6c 69 74 74 6c 65 20 0a 19 89 80 80 6d 69 6c 64 20 74 6f 69 6c 65 74 20 73 6f 61 70 2c 20 61 ┆ little mild toilet soap, a┆ 0xcba0…cbc0 6e 64 20 61 20 73 6f 66 74 2c 20 66 69 72 6d 6c 79 20 77 72 75 6e 67 20 63 6c 6f 74 68 2e 0d 0a ┆nd a soft, firmly wrung cloth. ┆ 0xcbc0…cbe0 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 44 69 73 70 6c 61 79 20 53 63 72 65 65 6e 0d 0a 0d 0a ┆ . Display Screen ┆ 0xcbe0…cc00 20 20 20 20 20 20 20 20 20 20 20 84 57 69 70 65 20 6f 66 66 20 74 68 65 20 64 69 73 70 6c 61 79 ┆ Wipe off the display┆ 0xcc00…cc20 (102,) 20 73 63 72 65 65 6e 20 77 69 74 68 20 74 68 65 20 63 6c 6f 74 68 2e 0d 0a 0d 0a 20 20 20 20 20 ┆ screen with the cloth. ┆ 0xcc20…cc40 20 20 20 20 20 20 84 41 76 6f 69 64 20 73 63 72 61 74 63 68 69 6e 67 20 74 68 65 20 61 6e 74 69 ┆ Avoid scratching the anti┆ 0xcc40…cc60 2d 72 65 66 6c 65 63 74 69 6f 6e 20 63 6f 61 74 69 6e 67 20 28 65 2e 67 2e 20 0a 19 8b 80 80 77 ┆-reflection coating (e.g. w┆ 0xcc60…cc80 69 74 68 20 73 68 61 72 70 20 6f 62 6a 65 63 74 73 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 ┆ith sharp objects). ┆ 0xcc80…cca0 2e 20 a1 44 69 73 70 6c 61 79 20 55 6e 69 74 20 61 6e 64 20 4b 65 79 62 6f 61 72 64 0d 0a 0d 0a ┆. Display Unit and Keyboard ┆ 0xcca0…ccc0 20 20 20 20 20 20 20 20 20 20 20 84 57 69 70 65 20 6f 66 66 20 74 68 65 20 64 69 73 70 6c 61 79 ┆ Wipe off the display┆ 0xccc0…cce0 20 75 6e 69 74 20 61 6e 64 20 6b 65 79 62 6f 61 72 64 20 77 69 74 68 20 74 68 65 20 63 6c 6f 74 ┆ unit and keyboard with the clot┆ 0xcce0…cd00 68 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 44 69 73 6b 20 53 79 73 74 65 6d 0d 0a 0d ┆h. . Disk System ┆ 0xcd00…cd20 0a 20 20 20 20 20 20 20 20 20 20 20 84 57 69 70 65 20 6f 66 66 20 74 68 65 20 64 72 69 76 65 28 ┆ Wipe off the drive(┆ 0xcd20…cd40 73 29 20 77 69 74 68 20 74 68 65 20 63 6c 6f 74 68 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 ┆s) with the cloth. ┆ 0xcd40…cd60 20 84 41 76 6f 69 64 20 70 75 74 74 69 6e 67 20 66 6f 72 65 69 67 6e 20 6f 62 6a 65 63 74 73 20 ┆ Avoid putting foreign objects ┆ 0xcd60…cd80 69 6e 74 6f 20 74 68 65 20 73 6c 6f 74 20 6f 66 20 61 20 0a 19 8b 80 80 64 69 73 6b 65 74 74 65 ┆into the slot of a diskette┆ 0xcd80…cda0 20 64 72 69 76 65 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 50 72 69 6e 74 65 72 0d 0a ┆ drive. . Printer ┆ 0xcda0…cdc0 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 57 69 70 65 20 6f 66 66 20 74 68 65 20 70 72 69 6e 74 ┆ Wipe off the print┆ 0xcdc0…cde0 65 72 20 77 69 74 68 20 74 68 65 20 63 6c 6f 74 68 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 ┆er with the cloth. ┆ 0xcde0…ce00 20 84 4f 63 63 61 73 69 6f 6e 61 6c 6c 79 20 72 65 6d 6f 76 65 20 74 68 65 20 63 6f 76 65 72 20 ┆ Occasionally remove the cover ┆ 0xce00…ce20 (103,) 61 6e 64 20 76 61 63 75 75 6d 2d 63 6c 65 61 6e 20 74 68 65 20 0a 19 8b 80 80 69 6e 73 69 64 65 ┆and vacuum-clean the inside┆ 0xce20…ce40 2e 0d 0a 0d 0a 0d 0a a1 b0 34 2e 31 2e 32 20 20 20 20 52 65 70 6c 61 63 69 6e 67 20 74 68 65 20 ┆. 4.1.2 Replacing the ┆ 0xce40…ce60 46 75 73 65 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 66 75 73 65 20 69 6e 20 74 68 ┆Fuse The fuse in th┆ 0xce60…ce80 65 20 70 6f 77 65 72 20 63 61 62 6c 65 20 63 6f 6e 6e 65 63 74 6f 72 20 28 32 2e 31 2e 32 2e 31 ┆e power cable connector (2.1.2.1┆ 0xce80…cea0 29 20 69 73 20 0a 19 89 80 80 72 65 70 6c 61 63 65 64 20 61 73 20 66 6f 6c 6c 6f 77 73 3a 0d 0a ┆) is replaced as follows: ┆ 0xcea0…cec0 0d 0a 20 20 20 20 20 20 20 20 20 84 31 2e 20 52 65 6d 6f 76 65 20 70 6f 77 65 72 20 66 72 6f 6d ┆ 1. Remove power from┆ 0xcec0…cee0 20 74 68 65 20 74 65 72 6d 69 6e 61 6c 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 32 2e 20 52 ┆ the terminal. 2. R┆ 0xcee0…cf00 65 6d 6f 76 65 20 74 68 65 20 70 6f 77 65 72 20 63 61 62 6c 65 20 66 72 6f 6d 20 74 68 65 20 63 ┆emove the power cable from the c┆ 0xcf00…cf20 6f 6e 6e 65 63 74 6f 72 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 33 2e 20 52 65 6d 6f 76 65 20 ┆onnector. 3. Remove ┆ 0xcf20…cf40 74 68 65 20 66 75 73 65 20 68 6f 6c 64 65 72 2c 20 64 69 72 65 63 74 6c 79 20 61 62 6f 76 65 20 ┆the fuse holder, directly above ┆ 0xcf40…cf60 74 68 65 20 63 6f 6e 6e 65 63 74 6f 72 2e 0d 0a 0d 0a 8c 83 d0 0a 20 20 20 20 20 20 20 20 20 34 ┆the connector. 4┆ 0xcf60…cf80 2e 20 84 52 65 70 6c 61 63 65 20 74 68 65 20 66 75 73 65 20 77 69 74 68 20 74 68 65 20 73 70 61 ┆. Replace the fuse with the spa┆ 0xcf80…cfa0 72 65 20 66 75 73 65 20 69 6e 20 74 68 65 20 66 75 73 65 20 0a 19 8c 80 80 68 6f 6c 64 65 72 2e ┆re fuse in the fuse holder.┆ 0xcfa0…cfc0 0d 0a 0d 0a 0d 0a a1 b0 34 2e 32 20 20 20 20 20 20 44 69 73 6b 65 74 74 65 73 0d 0a 0d 0a 20 20 ┆ 4.2 Diskettes ┆ 0xcfc0…cfe0 20 20 20 20 20 20 20 84 44 69 73 6b 65 74 74 65 73 20 6d 75 73 74 20 62 65 20 68 61 6e 64 6c 65 ┆ Diskettes must be handle┆ 0xcfe0…d000 64 20 77 69 74 68 20 63 61 72 65 20 69 6e 20 6f 72 64 65 72 20 74 68 61 74 20 74 68 65 79 20 0a ┆d with care in order that they ┆ 0xd000…d020 (104,) 19 8a 80 80 6d 61 79 20 73 65 72 76 65 20 74 68 65 69 72 20 70 75 72 70 6f 73 65 2e 20 49 74 20 ┆ may serve their purpose. It ┆ 0xd020…d040 6d 61 79 20 61 6c 73 6f 20 62 65 20 64 65 73 69 72 61 62 6c 65 20 74 6f 20 0a 19 8a 80 80 70 72 ┆may also be desirable to pr┆ 0xd040…d060 6f 74 65 63 74 20 63 65 72 74 61 69 6e 20 64 69 73 6b 65 74 74 65 73 20 61 67 61 69 6e 73 74 20 ┆otect certain diskettes against ┆ 0xd060…d080 77 72 69 74 69 6e 67 2e 0d 0a 0d 0a 0d 0a a1 b0 34 2e 32 2e 31 20 20 20 20 43 61 72 65 20 6f 66 ┆writing. 4.2.1 Care of┆ 0xd080…d0a0 20 44 69 73 6b 65 74 74 65 73 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4e 65 76 65 72 20 74 6f ┆ Diskettes Never to┆ 0xd0a0…d0c0 75 63 68 20 74 68 65 20 73 75 72 66 61 63 65 20 6f 66 20 61 20 64 69 73 6b 65 74 74 65 20 28 76 ┆uch the surface of a diskette (v┆ 0xd0c0…d0e0 69 73 69 62 6c 65 20 74 68 72 6f 75 67 68 20 0a 19 89 80 80 74 68 65 20 72 6f 75 6e 64 20 61 6e ┆isible through the round an┆ 0xd0e0…d100 64 20 6f 62 6c 6f 6e 67 20 68 6f 6c 65 73 20 69 6e 20 74 68 65 20 64 69 73 6b 65 74 74 65 20 63 ┆d oblong holes in the diskette c┆ 0xd100…d120 6f 76 65 72 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 4e 65 76 65 72 20 77 72 69 74 65 20 ┆over). Never write ┆ 0xd120…d140 6f 6e 20 74 68 65 20 64 69 73 6b 65 74 74 65 20 6c 61 62 65 6c 2c 20 6f 6e 63 65 20 69 74 20 68 ┆on the diskette label, once it h┆ 0xd140…d160 61 73 20 62 65 65 6e 20 0a 19 89 80 80 61 66 66 69 78 65 64 20 74 6f 20 74 68 65 20 64 69 73 6b ┆as been affixed to the disk┆ 0xd160…d180 65 74 74 65 20 63 6f 76 65 72 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 41 6c 77 61 79 73 20 ┆ette cover. Always ┆ 0xd180…d1a0 6b 65 65 70 20 61 20 64 69 73 6b 65 74 74 65 20 77 68 69 63 68 20 69 73 20 6e 6f 74 20 69 6e 20 ┆keep a diskette which is not in ┆ 0xd1a0…d1c0 75 73 65 20 69 6e 20 69 74 73 20 70 72 6f 80 0a 19 89 80 80 74 65 63 74 69 76 65 20 65 6e 76 65 ┆use in its pro tective enve┆ 0xd1c0…d1e0 6c 6f 70 65 2c 20 73 65 63 75 72 65 64 20 61 67 61 69 6e 73 74 20 68 61 72 6d 66 75 6c 20 65 6e ┆lope, secured against harmful en┆ 0xd1e0…d200 76 69 72 6f 6e 6d 65 6e 74 61 6c 20 0a 19 89 80 80 69 6e 66 6c 75 65 6e 63 65 73 2c 20 65 2e 67 ┆vironmental influences, e.g┆ 0xd200…d220 (105,) 2e 20 6d 61 67 6e 65 74 69 63 20 6d 61 74 65 72 69 61 6c 73 2c 20 64 75 73 74 2c 20 68 65 61 74 ┆. magnetic materials, dust, heat┆ 0xd220…d240 2c 20 6f 72 20 0a 19 89 80 80 73 75 6e 6c 69 67 68 74 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 ┆, or sunlight. ┆ 0xd240…d260 84 53 74 6f 72 65 20 64 69 73 6b 65 74 74 65 73 20 69 6e 20 61 6e 20 75 70 72 69 67 68 74 20 70 ┆ Store diskettes in an upright p┆ 0xd260…d280 6f 73 69 74 69 6f 6e 2c 20 70 72 65 66 65 72 61 62 6c 79 20 69 6e 20 61 20 0a 19 89 80 80 63 6c ┆osition, preferably in a cl┆ 0xd280…d2a0 6f 73 65 64 20 64 69 73 6b 65 74 74 65 20 63 6f 6e 74 61 69 6e 65 72 2e 0d 0a 0d 0a 0d 0a a1 b0 ┆osed diskette container. ┆ 0xd2a0…d2c0 34 2e 32 2e 32 20 20 20 20 57 72 69 74 65 2d 50 72 6f 74 65 63 74 69 6f 6e 20 6f 66 20 44 69 73 ┆4.2.2 Write-Protection of Dis┆ 0xd2c0…d2e0 6b 65 74 74 65 73 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 44 69 73 6b 65 74 74 65 73 20 61 72 ┆kettes Diskettes ar┆ 0xd2e0…d300 65 20 70 72 6f 74 65 63 74 65 64 20 61 67 61 69 6e 73 74 20 74 68 65 20 77 72 69 74 69 6e 67 20 ┆e protected against the writing ┆ 0xd300…d320 6f 66 20 64 61 74 61 20 61 73 20 0a 19 89 80 80 66 6f 6c 6c 6f 77 73 3a 0d 0a 0d 0a 20 20 20 20 ┆of data as follows: ┆ 0xd320…d340 20 20 20 20 20 2e 20 a1 e1 b0 35 20 31 2f 34 20 49 6e 63 68 20 44 69 73 6b 65 74 74 65 73 0d 0a ┆ . 5 1/4 Inch Diskettes ┆ 0xd340…d360 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 43 6f 76 65 72 20 74 68 65 20 6e 6f 74 63 68 20 69 6e ┆ Cover the notch in┆ 0xd360…d380 20 74 68 65 20 73 69 64 65 20 6f 66 20 74 68 65 20 64 69 73 6b 65 74 74 65 20 63 6f 76 65 72 20 ┆ the side of the diskette cover ┆ 0xd380…d3a0 77 69 74 68 20 0a 19 8c 80 80 61 20 70 69 65 63 65 20 6f 66 20 6f 70 61 71 75 65 20 74 61 70 65 ┆with a piece of opaque tape┆ 0xd3a0…d3c0 2e 20 54 6f 20 65 6e 61 62 6c 65 20 77 72 69 74 69 6e 67 2c 20 72 65 6d 6f 76 65 20 74 68 65 20 ┆. To enable writing, remove the ┆ 0xd3c0…d3e0 0a 19 8c 80 80 74 61 70 65 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 2e 20 a1 e1 b0 38 20 49 6e ┆ tape. . 8 In┆ 0xd3e0…d400 63 68 20 44 69 73 6b 65 74 74 65 73 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 84 4d 61 6b 65 ┆ch Diskettes Make┆ 0xd400…d420 (106,) 20 61 20 6e 6f 74 63 68 20 69 6e 20 74 68 65 20 73 69 64 65 20 6f 66 20 74 68 65 20 64 69 73 6b ┆ a notch in the side of the disk┆ 0xd420…d440 65 74 74 65 20 63 6f 76 65 72 20 61 73 20 0a 19 8c 80 80 73 68 6f 77 6e 20 62 65 6c 6f 77 20 28 ┆ette cover as shown below (┆ 0xd440…d460 6d 65 61 73 75 72 65 6d 65 6e 74 73 20 69 6e 20 6d 69 6c 6c 69 6d 65 74 65 72 73 29 2e 20 54 6f ┆measurements in millimeters). To┆ 0xd460…d480 20 65 6e 61 62 6c 65 20 20 20 20 20 20 20 20 20 20 20 0a 19 8c 80 80 77 72 69 74 69 6e 67 2c 20 ┆ enable writing, ┆ 0xd480…d4a0 63 6f 76 65 72 20 74 68 65 20 6e 6f 74 63 68 20 77 69 74 68 20 61 20 70 69 65 63 65 20 6f 66 20 ┆cover the notch with a piece of ┆ 0xd4a0…d4b0 6f 70 61 71 75 65 20 74 61 70 65 2e 0d 0a 0d 0a ┆opaque tape. ┆ 0xd4b0…d4b3 FormFeed { 0xd4b0…d4b3 0c 82 e8 ┆ ┆ 0xd4b0…d4b3 } 0xd4b3…d4c0 0a a1 b0 a1 b0 b0 a1 41 2e 20 20 20 20 ┆ A. ┆ 0xd4c0…d4e0 20 20 20 52 45 46 45 52 45 4e 43 45 53 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 28 20 31 29 20 ┆ REFERENCES ( 1) ┆ 0xd4e0…d500 20 52 43 53 4c 20 4e 6f 2e 20 34 32 2d 69 31 39 38 34 3a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 ┆ RCSL No. 42-i1984: ┆ 0xd500…d520 20 20 20 20 84 a1 52 43 38 35 35 20 43 6f 6e 66 69 67 75 72 61 74 69 6f 6e 20 47 75 69 64 65 0d ┆ RC855 Configuration Guide ┆ 0xd520…d540 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 54 6f 72 73 74 65 6e 20 53 63 68 6d 69 64 74 ┆ Torsten Schmidt┆ 0xd540…d560 20 61 6e 64 20 48 65 6e 6e 69 6e 67 20 43 68 72 69 73 74 65 6e 73 65 6e 2c 20 4d 61 72 63 68 20 ┆ and Henning Christensen, March ┆ 0xd560…d580 0a 19 8f 80 80 31 39 38 32 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 28 20 32 29 20 20 52 43 53 4c ┆ 1982 ( 2) RCSL┆ 0xd580…d5a0 20 4e 6f 2e 20 34 32 2d 69 32 30 34 32 3a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 ┆ No. 42-i2042: ┆ 0xd5a0…d5c0 a1 52 43 38 35 35 20 49 6e 73 74 61 6c 6c 61 74 69 6f 6e 20 47 75 69 64 65 0d 0a 20 20 20 20 20 ┆ RC855 Installation Guide ┆ 0xd5c0…d5e0 20 20 20 20 20 20 20 20 20 20 84 48 65 6e 6e 69 6e 67 20 43 68 72 69 73 74 65 6e 73 65 6e 2c 20 ┆ Henning Christensen, ┆ 0xd5e0…d600 4d 61 79 20 31 39 38 32 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 28 20 33 29 20 20 52 43 53 4c 20 ┆May 1982 ( 3) RCSL ┆ 0xd600…d620 (107,) 4e 6f 2e 20 34 32 2d 69 32 33 34 37 3a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 a1 ┆No. 42-i2347: ┆ 0xd620…d640 52 43 38 35 35 20 57 6f 72 6b 20 53 74 61 74 69 6f 6e 20 55 73 65 72 27 73 20 47 75 69 64 65 0d ┆RC855 Work Station User's Guide ┆ 0xd640…d660 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4a 65 66 66 72 65 79 20 43 2e 20 53 6e 69 64 65 ┆ Jeffrey C. Snide┆ 0xd660…d680 72 20 61 6e 64 20 4c 65 69 66 20 4f 6c 73 65 6e 2c 20 4a 75 6e 65 20 31 39 38 33 0d 0a 0d 0a 20 ┆r and Leif Olsen, June 1983 ┆ 0xd680…d6a0 20 20 20 20 20 20 20 20 28 20 34 29 20 20 52 43 53 4c 20 4e 6f 2e 20 34 32 2d 69 31 38 32 36 3a ┆ ( 4) RCSL No. 42-i1826:┆ 0xd6a0…d6c0 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 a1 52 43 38 35 35 20 49 4d 42 20 33 32 37 30 ┆ RC855 IMB 3270┆ 0xd6c0…d6e0 20 42 53 43 20 45 6d 75 6c 61 74 6f 72 20 49 6e 73 74 61 6c 6c 61 74 69 6f 6e 20 47 75 69 64 65 ┆ BSC Emulator Installation Guide┆ 0xd6e0…d700 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 46 69 6e 6e 20 56 65 72 6e 65 72 20 4e 69 65 ┆ Finn Verner Nie┆ 0xd700…d720 6c 73 65 6e 2c 20 41 70 72 69 6c 20 31 39 38 32 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 28 20 35 ┆lsen, April 1982 ( 5┆ 0xd720…d740 29 20 20 52 43 53 4c 20 4e 6f 2e 20 34 32 2d 69 32 33 37 32 3a 0d 0a 20 20 20 20 20 20 20 20 20 ┆) RCSL No. 42-i2372: ┆ 0xd740…d760 20 20 20 20 20 20 a1 84 52 43 38 35 35 20 49 4d 42 20 33 32 37 30 20 42 53 43 20 45 6d 75 6c 61 ┆ RC855 IMB 3270 BSC Emula┆ 0xd760…d780 74 6f 72 20 49 6e 73 74 61 6c 6c 61 74 69 6f 6e 20 47 75 69 64 65 e1 20 0a 19 8f 80 80 e1 28 e1 ┆tor Installation Guide ( ┆ 0xd780…d7a0 77 69 74 68 20 44 41 54 45 58 29 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4d 61 78 20 ┆with DATEX) Max ┆ 0xd7a0…d7c0 4c 61 72 73 65 6e 2c 20 4a 75 6c 79 20 31 39 38 33 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 28 20 ┆Larsen, July 1983 ( ┆ 0xd7c0…d7e0 36 29 20 20 52 43 53 4c 20 4e 6f 2e 20 34 32 2d 69 32 31 34 30 3a 0d 0a 20 20 20 20 20 20 20 20 ┆6) RCSL No. 42-i2140: ┆ 0xd7e0…d800 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 49 42 4d 20 32 37 38 30 2f 33 37 38 30 20 42 53 43 ┆ RC855 IBM 2780/3780 BSC┆ 0xd800…d820 (108,) 20 45 6d 75 6c 61 74 6f 72 20 49 6e 73 74 61 6c 6c 61 74 69 6f 6e 20 0a 19 8f 80 84 47 75 69 64 ┆ Emulator Installation Guid┆ 0xd820…d840 65 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 54 6f 72 62 65 6e 20 47 2e 20 52 61 73 ┆e Torben G. Ras┆ 0xd840…d860 6d 75 73 73 65 6e 20 61 6e 64 20 48 65 6e 6e 69 6e 67 20 43 68 72 69 73 74 65 6e 73 65 6e 2c 20 ┆mussen and Henning Christensen, ┆ 0xd860…d880 0a 19 8f 80 80 4f 63 74 6f 62 65 72 20 31 39 38 32 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 28 20 ┆ October 1982 ( ┆ 0xd880…d8a0 37 29 20 20 52 43 53 4c 20 4e 6f 2e 20 34 32 2d 69 32 31 31 32 3a 0d 0a 20 20 20 20 20 20 20 20 ┆7) RCSL No. 42-i2112: ┆ 0xd8a0…d8c0 20 20 20 20 20 20 20 84 a1 84 a1 52 43 38 35 35 20 54 54 59 20 45 6d 75 6c 61 74 6f 72 20 49 6e ┆ RC855 TTY Emulator In┆ 0xd8c0…d8e0 73 74 61 6c 6c 61 74 69 6f 6e 20 47 75 69 64 65 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆stallation Guide ┆ 0xd8e0…d900 20 84 43 6c 61 75 73 20 54 65 72 70 2c 20 41 75 67 75 73 74 20 31 39 38 32 0d 0a 0d 0a 20 20 20 ┆ Claus Terp, August 1982 ┆ 0xd900…d920 20 20 20 20 20 20 28 20 38 29 20 20 52 43 53 4c 20 4e 6f 2e 20 34 32 2d 69 32 31 35 30 3a 0d 0a ┆ ( 8) RCSL No. 42-i2150: ┆ 0xd920…d940 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 49 42 4d 20 33 32 37 30 20 ┆ RC855 IBM 3270 ┆ 0xd940…d960 42 53 43 20 45 6d 75 6c 61 74 6f 72 20 4f 70 65 72 61 74 69 6e 67 20 47 75 69 64 65 0d 0a 20 20 ┆BSC Emulator Operating Guide ┆ 0xd960…d980 20 20 20 20 20 20 20 20 20 20 20 20 20 84 43 6c 61 75 73 20 54 65 72 70 2c 20 4e 6f 76 65 6d 62 ┆ Claus Terp, Novemb┆ 0xd980…d9a0 65 72 20 31 39 38 32 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 28 20 39 29 20 20 52 43 53 4c 20 4e ┆er 1982 ( 9) RCSL N┆ 0xd9a0…d9c0 6f 2e 20 34 32 2d 69 32 31 34 31 3a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 a1 84 52 ┆o. 42-i2141: R┆ 0xd9c0…d9e0 43 38 35 35 20 49 42 4d 20 32 37 38 30 2f 33 37 38 30 20 42 53 43 20 45 6d 75 6c 61 74 6f 72 20 ┆C855 IBM 2780/3780 BSC Emulator ┆ 0xd9e0…da00 4f 70 65 72 61 74 69 6e 67 20 47 75 69 64 65 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆Operating Guide ┆ 0xda00…da20 (109,) 84 54 6f 72 62 65 6e 20 47 2e 20 52 61 73 6d 75 73 73 65 6e 20 61 6e 64 20 48 65 6e 6e 69 6e 67 ┆ Torben G. Rasmussen and Henning┆ 0xda20…da40 20 43 68 72 69 73 74 65 6e 73 65 6e 2c 20 0a 19 8f 80 80 4f 63 74 6f 62 65 72 20 31 39 38 32 0d ┆ Christensen, October 1982 ┆ 0xda40…da60 0a 0d 0a 20 20 20 20 20 20 20 20 20 28 31 30 29 20 20 52 43 53 4c 20 4e 6f 2e 20 34 32 2d 69 32 ┆ (10) RCSL No. 42-i2┆ 0xda60…da80 33 39 35 3a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 54 54 59 ┆395: RC855 TTY┆ 0xda80…daa0 20 45 6d 75 6c 61 74 6f 72 20 4f 70 65 72 61 74 69 6e 67 20 47 75 69 64 65 0d 0a 20 20 20 20 20 ┆ Emulator Operating Guide ┆ 0xdaa0…dac0 20 20 20 20 20 20 20 20 20 20 84 4f 6c 65 20 54 68 6f 6d 61 73 73 65 6e 2c 20 4f 63 74 6f 62 65 ┆ Ole Thomassen, Octobe┆ 0xdac0…dae0 72 20 31 39 38 33 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 28 31 31 29 20 20 52 43 53 4c 20 4e 6f ┆r 1983 (11) RCSL No┆ 0xdae0…db00 2e 20 34 32 2d 69 32 31 35 36 3a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 a1 52 43 ┆. 42-i2156: RC┆ 0xdb00…db20 38 35 35 20 49 4d 42 20 33 32 37 30 20 42 53 43 20 45 6d 75 6c 61 74 6f 72 20 52 65 66 65 72 65 ┆855 IMB 3270 BSC Emulator Refere┆ 0xdb20…db40 6e 63 65 20 4d 61 6e 75 61 6c 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 50 69 65 72 ┆nce Manual Pier┆ 0xdb40…db60 63 65 20 43 2e 20 48 61 7a 65 6c 74 6f 6e 2c 20 4e 6f 76 65 6d 62 65 72 20 31 39 38 32 0d 0a 0d ┆ce C. Hazelton, November 1982 ┆ 0xdb60…db80 0a 20 20 20 20 20 20 20 20 20 28 31 32 29 20 20 52 43 53 4c 20 4e 6f 2e 20 34 32 2d 69 32 34 35 ┆ (12) RCSL No. 42-i245┆ 0xdb80…dba0 34 3a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 39 30 20 43 6f 6e 74 72 ┆4: RC890 Contr┆ 0xdba0…dbc0 6f 6c 20 55 6e 69 74 20 4f 70 65 72 61 74 69 6f 6e 20 61 6e 64 20 53 79 73 74 65 6d 20 0a 19 8f ┆ol Unit Operation and System ┆ 0xdbc0…dbe0 80 84 43 75 73 74 6f 6d 69 7a 61 74 69 6f 6e 20 4d 61 6e 75 61 6c 0d 0a 20 20 20 20 20 20 20 20 ┆ Customization Manual ┆ 0xdbe0…dc00 20 20 20 20 20 20 20 84 50 69 65 72 63 65 20 43 2e 20 48 61 7a 65 6c 74 6f 6e 2c 20 4a 61 6e 75 ┆ Pierce C. Hazelton, Janu┆ 0xdc00…dc0c (110,) 61 72 79 20 31 39 38 34 0d 0a 0d 0a ┆ary 1984 ┆ 0xdc0c…dc0f FormFeed { 0xdc0c…dc0f 0c 83 c0 ┆ ┆ 0xdc0c…dc0f } 0xdc0f…dc20 0a 20 20 20 20 20 20 20 20 20 28 31 33 29 20 20 52 ┆ (13) R┆ 0xdc20…dc40 43 53 4c 20 4e 6f 2e 20 34 32 2d 69 32 30 39 31 3a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆CSL No. 42-i2091: ┆ 0xdc40…dc60 20 20 84 a1 52 43 38 35 30 20 45 78 74 65 6e 64 65 64 20 53 65 6c 66 74 65 73 74 20 55 73 65 72 ┆ RC850 Extended Selftest User┆ 0xdc60…dc80 27 73 20 47 75 69 64 65 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 84 4a 61 6e 20 4e 69 ┆'s Guide Jan Ni┆ 0xdc80…dc96 65 6c 73 65 6e 2c 20 41 75 67 75 73 74 20 31 39 38 32 0d 0a 0d 0a ┆elsen, August 1982 ┆ 0xdc96…dc99 FormFeed { 0xdc96…dc99 0c 80 a0 ┆ ┆ 0xdc96…dc99 } 0xdc99…dca0 0a a1 b0 42 2e 20 20 ┆ B. ┆ 0xdca0…dcc0 20 20 20 20 20 45 58 54 45 4e 44 45 44 20 53 45 4c 46 54 45 53 54 0d 0a 0d 0a 20 20 20 20 20 20 ┆ EXTENDED SELFTEST ┆ 0xdcc0…dce0 20 20 20 84 54 68 65 20 65 78 74 65 6e 64 65 64 20 73 65 6c 66 74 65 73 74 20 69 73 20 61 20 73 ┆ The extended selftest is a s┆ 0xdce0…dd00 65 74 20 6f 66 20 64 69 61 67 6e 6f 73 74 69 63 20 68 61 72 64 77 61 72 65 20 0a 19 89 80 80 74 ┆et of diagnostic hardware t┆ 0xdd00…dd20 65 73 74 20 70 72 6f 67 72 61 6d 73 2c 20 69 6e 74 65 67 72 61 74 65 64 20 69 6e 20 74 68 65 20 ┆est programs, integrated in the ┆ 0xdd20…dd40 52 43 38 35 35 20 62 6f 6f 74 6c 6f 61 64 65 72 2e 20 42 79 20 0a 19 89 80 80 72 75 6e 6e 69 6e ┆RC855 bootloader. By runnin┆ 0xdd40…dd60 67 20 74 68 65 20 65 78 74 65 6e 64 65 64 20 73 65 6c 66 74 65 73 74 20 61 73 20 64 65 73 63 72 ┆g the extended selftest as descr┆ 0xdd60…dd80 69 62 65 64 20 62 65 6c 6f 77 2c 20 74 68 65 20 0a 19 89 80 80 52 43 38 35 35 20 6f 70 65 72 61 ┆ibed below, the RC855 opera┆ 0xdd80…dda0 74 6f 72 20 63 61 6e 20 74 68 6f 72 6f 75 67 68 6c 79 20 63 68 65 63 6b 20 68 69 73 20 74 65 72 ┆tor can thoroughly check his ter┆ 0xdda0…ddc0 6d 69 6e 61 6c 20 69 6e 20 0a 19 89 80 80 61 70 70 72 6f 78 69 6d 61 74 65 6c 79 20 74 77 6f 20 ┆minal in approximately two ┆ 0xddc0…dde0 6d 69 6e 75 74 65 73 2e 0d 0a 0d 0a 0d 0a a1 b0 42 2e 31 20 20 20 20 20 20 54 65 73 74 20 50 72 ┆minutes. B.1 Test Pr┆ 0xdde0…de00 6f 63 65 64 75 72 65 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 6f 20 65 6e 74 65 72 20 74 68 ┆ocedure To enter th┆ 0xde00…de20 (111,) 65 20 65 78 74 65 6e 64 65 64 20 73 65 6c 66 74 65 73 74 20 66 72 6f 6d 20 74 68 65 20 62 6f 6f ┆e extended selftest from the boo┆ 0xde20…de40 74 6c 6f 61 64 65 72 2c 20 74 68 65 20 0a 19 89 80 80 6f 70 65 72 61 74 6f 72 20 6d 75 73 74 20 ┆tloader, the operator must ┆ 0xde40…de60 68 6f 6c 64 20 74 68 65 20 6b 65 79 20 6c 61 62 65 6c 65 64 20 22 54 22 20 64 65 70 72 65 73 73 ┆hold the key labeled "T" depress┆ 0xde60…de80 65 64 20 77 68 69 6c 65 20 0a 19 89 80 80 74 68 65 20 74 65 72 6d 69 6e 61 6c 20 65 78 65 63 75 ┆ed while the terminal execu┆ 0xde80…dea0 74 65 73 20 74 68 65 20 70 6f 77 65 72 2d 75 70 20 73 65 6c 66 74 65 73 74 20 28 33 2e 32 29 2e ┆tes the power-up selftest (3.2).┆ 0xdea0…dec0 20 49 6e 20 0a 19 89 80 80 61 70 70 72 6f 78 69 6d 61 74 65 6c 79 20 37 20 73 65 63 6f 6e 64 73 ┆ In approximately 7 seconds┆ 0xdec0…dee0 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 77 69 6c 6c 20 61 70 70 65 61 72 20 6f 6e 20 74 68 ┆ the following will appear on th┆ 0xdee0…df00 65 20 0a 19 89 80 80 64 69 73 70 6c 61 79 20 73 63 72 65 65 6e 3a 0d 0a 0d 0a 09 09 52 43 38 35 ┆e display screen: RC85┆ 0xdf00…df20 35 20 45 78 74 65 6e 64 65 64 20 53 65 6c 66 74 65 73 74 0d 0a 09 09 3c 3c 3c 20 74 65 73 74 20 ┆5 Extended Selftest <<< test ┆ 0xdf20…df40 6e 6f 2e 3a 20 20 30 30 20 3e 3e 3e 0d 0a 09 09 3c 3c 3c 20 70 61 73 73 20 6e 6f 2e 3a 20 30 30 ┆no.: 00 >>> <<< pass no.: 00┆ 0xdf40…df60 30 30 30 20 3e 3e 3e 0d 0a 20 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 84 54 68 65 20 65 78 ┆000 >>> The ex┆ 0xdf60…df80 74 65 6e 64 65 64 20 73 65 6c 66 74 65 73 74 20 72 75 6e 73 20 61 75 74 6f 6d 61 74 69 63 61 6c ┆tended selftest runs automatical┆ 0xdf80…dfa0 6c 79 20 69 6e 20 61 20 63 6f 6e 74 69 6e 75 6f 75 73 20 0a 19 89 80 80 6c 6f 6f 70 2e 20 45 61 ┆ly in a continuous loop. Ea┆ 0xdfa0…dfc0 63 68 20 70 61 73 73 20 63 6f 6d 70 72 69 73 65 73 20 61 20 73 65 71 75 65 6e 63 65 20 6f 66 20 ┆ch pass comprises a sequence of ┆ 0xdfc0…dfe0 73 65 76 65 6e 20 64 69 66 66 65 72 65 6e 74 20 0a 19 89 80 80 74 65 73 74 73 2c 20 6e 75 6d 62 ┆seven different tests, numb┆ 0xdfe0…e000 65 72 65 64 20 66 72 6f 6d 20 30 20 74 6f 20 36 2c 20 66 6f 6c 6c 6f 77 65 64 20 62 79 20 61 20 ┆ered from 0 to 6, followed by a ┆ 0xe000…e020 (112,) 6d 6f 6d 65 6e 74 61 72 69 6c 79 20 0a 19 89 80 80 62 6c 61 6e 6b 20 73 63 72 65 65 6e 2e 20 54 ┆momentarily blank screen. T┆ 0xe020…e040 68 65 20 61 62 6f 76 65 20 6d 65 73 73 61 67 65 20 69 6e 64 69 63 61 74 65 73 20 74 68 61 74 20 ┆he above message indicates that ┆ 0xe040…e060 74 65 73 74 20 0a 19 89 80 80 6e 75 6d 62 65 72 20 30 20 69 73 20 61 63 74 69 76 65 2c 20 62 75 ┆test number 0 is active, bu┆ 0xe060…e080 74 20 6e 6f 20 70 61 73 73 65 73 20 68 61 76 65 20 62 65 65 6e 20 63 6f 6d 70 6c 65 74 65 64 2e ┆t no passes have been completed.┆ 0xe080…e0a0 20 0a 19 89 80 80 46 6f 72 20 61 20 74 68 6f 72 6f 75 67 68 20 63 68 65 63 6b 20 6f 66 20 74 68 ┆ For a thorough check of th┆ 0xe0a0…e0c0 65 20 74 65 72 6d 69 6e 61 6c 2c 20 74 68 65 20 6f 70 65 72 61 74 6f 72 20 0a 19 89 80 80 73 68 ┆e terminal, the operator sh┆ 0xe0c0…e0e0 6f 75 6c 64 20 61 6c 6c 6f 77 20 74 68 65 20 65 78 74 65 6e 64 65 64 20 73 65 6c 66 74 65 73 74 ┆ould allow the extended selftest┆ 0xe0e0…e100 20 74 6f 20 6c 6f 6f 70 20 74 68 72 6f 75 67 68 20 74 65 6e 20 0a 19 89 80 80 63 6f 6d 70 6c 65 ┆ to loop through ten comple┆ 0xe100…e120 74 65 20 70 61 73 73 65 73 2c 20 77 68 69 63 68 20 69 74 20 77 69 6c 6c 20 64 6f 20 69 6e 20 61 ┆te passes, which it will do in a┆ 0xe120…e140 70 70 72 6f 78 69 6d 61 74 65 6c 79 20 74 77 6f 20 0a 19 89 80 80 6d 69 6e 75 74 65 73 2e 0d 0a ┆pproximately two minutes. ┆ 0xe140…e160 0d 0a 20 20 20 20 20 20 20 20 20 84 49 66 20 61 6e 20 65 72 72 6f 72 20 69 73 20 64 65 74 65 63 ┆ If an error is detec┆ 0xe160…e180 74 65 64 20 62 79 20 74 68 65 20 65 78 74 65 6e 64 65 64 20 73 65 6c 66 74 65 73 74 2c 20 74 68 ┆ted by the extended selftest, th┆ 0xe180…e1a0 65 20 0a 19 89 80 80 74 65 72 6d 69 6e 61 6c 20 43 50 55 20 28 63 65 6e 74 72 61 6c 20 70 72 6f ┆e terminal CPU (central pro┆ 0xe1a0…e1c0 63 65 73 73 69 6e 67 20 75 6e 69 74 29 20 77 69 6c 6c 20 73 74 6f 70 2c 20 61 6e 64 20 0a 19 89 ┆cessing unit) will stop, and ┆ 0xe1c0…e1e0 80 80 74 68 65 20 6d 65 73 73 61 67 65 0d 0a 0d 0a 09 09 2a 2a 2a 2a 20 45 52 52 4f 52 20 6e 6f ┆ the message **** ERROR no┆ 0xe1e0…e200 2e 3a 20 3c 65 72 72 6f 72 20 63 6f 64 65 3e 20 2a 2a 2a 2a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 ┆.: <error code> **** ┆ 0xe200…e220 (113,) 20 84 77 68 65 72 65 20 3c 65 72 72 6f 72 20 63 6f 64 65 3e 20 69 73 20 61 20 74 77 6f 2d 64 69 ┆ where <error code> is a two-di┆ 0xe220…e240 67 69 74 20 68 65 78 61 64 65 63 69 6d 61 6c 20 6e 75 6d 62 65 72 2c 20 0a 19 89 80 80 77 69 6c ┆git hexadecimal number, wil┆ 0xe240…e260 6c 20 61 70 70 65 61 72 20 69 6e 20 74 68 65 20 6c 6f 77 65 72 20 72 69 67 68 74 2d 68 61 6e 64 ┆l appear in the lower right-hand┆ 0xe260…e280 20 63 6f 72 6e 65 72 20 6f 66 20 74 68 65 20 0a 19 89 80 80 64 69 73 70 6c 61 79 20 73 63 72 65 ┆ corner of the display scre┆ 0xe280…e2a0 65 6e 2e 20 54 68 65 20 6f 70 65 72 61 74 6f 72 20 73 68 6f 75 6c 64 20 6e 6f 74 65 20 64 6f 77 ┆en. The operator should note dow┆ 0xe2a0…e2c0 6e 20 74 68 65 20 65 72 72 6f 72 20 0a 19 89 80 80 63 6f 64 65 20 61 6e 64 20 72 65 70 6f 72 74 ┆n the error code and report┆ 0xe2c0…e2e0 20 74 68 65 20 65 72 72 6f 72 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 54 6f 20 65 78 69 74 ┆ the error. To exit┆ 0xe2e0…e300 20 66 72 6f 6d 20 74 68 65 20 65 78 74 65 6e 64 65 64 20 73 65 6c 66 74 65 73 74 20 61 6e 64 20 ┆ from the extended selftest and ┆ 0xe300…e320 72 65 2d 65 6e 74 65 72 20 74 68 65 20 0a 19 89 80 80 62 6f 6f 74 6c 6f 61 64 65 72 2c 20 74 68 ┆re-enter the bootloader, th┆ 0xe320…e340 65 20 6f 70 65 72 61 74 6f 72 20 6d 75 73 74 20 70 72 65 73 73 20 74 68 65 20 6b 65 79 20 63 6f ┆e operator must press the key co┆ 0xe340…e360 6d 62 69 6e 61 74 69 6f 6e 20 0a 19 89 80 80 43 54 52 4c 20 43 4c 45 41 52 2e 20 54 68 65 20 74 ┆mbination CTRL CLEAR. The t┆ 0xe360…e380 65 72 6d 69 6e 61 6c 20 77 69 6c 6c 20 74 68 65 6e 20 65 78 65 63 75 74 65 20 61 20 6e 6f 72 6d ┆erminal will then execute a norm┆ 0xe380…e3a0 61 6c 20 0a 19 89 80 80 70 6f 77 65 72 2d 75 70 20 73 65 6c 66 74 65 73 74 2e 0d 0a 0d 0a 0d 0a ┆al power-up selftest. ┆ 0xe3a0…e3a3 FormFeed { 0xe3a0…e3a3 0c 83 80 ┆ ┆ 0xe3a0…e3a3 } 0xe3a3…e3c0 0a a1 b0 42 2e 32 20 20 20 20 20 20 54 65 73 74 73 20 50 65 72 66 6f 72 6d 65 64 0d 0a ┆ B.2 Tests Performed ┆ 0xe3c0…e3e0 0d 0a 20 20 20 20 20 20 20 20 20 30 20 3a 20 84 a1 50 6f 77 65 72 2d 55 70 20 53 65 6c 66 74 65 ┆ 0 : Power-Up Selfte┆ 0xe3e0…e400 73 74 0d 0a 20 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 41 20 70 6f 77 65 72 2d 75 70 20 ┆st A power-up ┆ 0xe400…e420 (114,) 73 65 6c 66 74 65 73 74 20 69 73 20 65 78 65 63 75 74 65 64 20 69 6e 20 65 76 65 72 79 20 70 61 ┆selftest is executed in every pa┆ 0xe420…e440 73 73 20 6f 66 20 74 68 65 20 0a 19 8d 80 80 65 78 74 65 6e 64 65 64 20 73 65 6c 66 74 65 73 74 ┆ss of the extended selftest┆ 0xe440…e460 2e 20 54 68 65 20 70 6f 77 65 72 2d 75 70 20 73 65 6c 66 74 65 73 74 20 63 6f 6d 70 72 69 73 65 ┆. The power-up selftest comprise┆ 0xe460…e480 73 20 0a 19 8d 80 80 74 77 6f 20 74 65 73 74 73 3a 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 ┆s two tests: ┆ 0xe480…e4a0 20 20 84 a1 50 52 4f 4d 20 43 68 65 63 6b 73 75 6d 20 54 65 73 74 20 28 65 72 72 6f 72 20 63 6f ┆ PROM Checksum Test (error co┆ 0xe4a0…e4c0 64 65 3a 20 30 31 29 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 54 68 69 73 20 74 65 ┆de: 01) This te┆ 0xe4c0…e4e0 73 74 20 63 68 65 63 6b 73 20 74 68 65 20 50 52 4f 4d 73 20 28 70 72 6f 67 72 61 6d 6d 61 62 6c ┆st checks the PROMs (programmabl┆ 0xe4e0…e500 65 20 72 65 61 64 2d 6f 6e 6c 79 20 0a 19 8d 80 80 6d 65 6d 6f 72 69 65 73 29 20 6f 66 20 74 68 ┆e read-only memories) of th┆ 0xe500…e520 65 20 74 65 72 6d 69 6e 61 6c 2e 20 4e 6f 74 65 20 74 68 61 74 2c 20 69 66 20 61 6e 20 65 72 72 ┆e terminal. Note that, if an err┆ 0xe520…e540 6f 72 20 69 73 20 0a 19 8d 80 80 64 65 74 65 63 74 65 64 20 62 79 20 61 20 6e 6f 72 6d 61 6c 20 ┆or is detected by a normal ┆ 0xe540…e560 70 6f 77 65 72 2d 75 70 20 73 65 6c 66 74 65 73 74 2c 20 74 68 65 20 6d 65 73 73 61 67 65 0d 0a ┆power-up selftest, the message ┆ 0xe560…e580 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 a1 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xe580…e5a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xe5a0…e5c0 20 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 63 68 65 63 6b ┆ RC855 check┆ 0xe5c0…e5e0 73 75 6d 20 65 72 72 6f 72 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆sum error ┆ 0xe5e0…e600 20 20 20 20 20 20 20 20 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 69 73 20 64 69 73 ┆ is dis┆ 0xe600…e620 (115,) 70 6c 61 79 65 64 20 6f 6e 20 74 68 65 20 73 74 61 74 75 73 20 6c 69 6e 65 20 28 33 2e 32 29 2e ┆played on the status line (3.2).┆ 0xe620…e640 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 a1 52 41 4d 20 4d 65 6d 6f 72 79 20 54 65 ┆ RAM Memory Te┆ 0xe640…e660 73 74 20 28 65 72 72 6f 72 20 63 6f 64 65 3a 20 30 32 29 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 ┆st (error code: 02) ┆ 0xe660…e680 20 20 20 20 84 54 68 69 73 20 74 65 73 74 20 63 68 65 63 6b 73 20 74 68 65 20 52 41 4d 20 28 72 ┆ This test checks the RAM (r┆ 0xe680…e6a0 61 6e 64 6f 6d 2d 61 63 63 65 73 73 20 6d 65 6d 6f 72 79 29 20 6f 66 20 0a 19 8d 80 80 74 68 65 ┆andom-access memory) of the┆ 0xe6a0…e6c0 20 74 65 72 6d 69 6e 61 6c 2e 20 4e 6f 74 65 20 74 68 61 74 2c 20 69 66 20 61 6e 20 65 72 72 6f ┆ terminal. Note that, if an erro┆ 0xe6c0…e6e0 72 20 69 73 20 64 65 74 65 63 74 65 64 20 62 79 20 0a 19 8d 80 80 61 20 6e 6f 72 6d 61 6c 20 70 ┆r is detected by a normal p┆ 0xe6e0…e700 6f 77 65 72 2d 75 70 20 73 65 6c 66 74 65 73 74 2c 20 74 68 65 20 6d 65 73 73 61 67 65 0d 0a 0d ┆ower-up selftest, the message ┆ 0xe700…e720 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 a1 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xe720…e740 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xe740…e760 20 20 20 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 a1 52 43 38 35 35 20 6d 65 6d 6f 72 79 ┆ RC855 memory┆ 0xe760…e780 20 65 72 72 6f 72 20 3c 61 64 64 72 65 73 73 65 73 20 61 6e 64 20 76 61 6c 75 65 73 3e 20 20 20 ┆ error <addresses and values> ┆ 0xe780…e7a0 20 20 20 20 20 20 20 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 69 73 20 64 69 73 70 ┆ is disp┆ 0xe7a0…e7c0 6c 61 79 65 64 20 6f 6e 20 74 68 65 20 73 74 61 74 75 73 20 6c 69 6e 65 20 28 33 2e 32 29 2e 0d ┆layed on the status line (3.2). ┆ 0xe7c0…e7e0 0a 0d 0a 20 20 20 20 20 20 20 20 20 31 20 3a 20 a1 4d 65 6d 6f 72 79 20 52 65 66 72 65 73 68 20 ┆ 1 : Memory Refresh ┆ 0xe7e0…e800 54 65 73 74 20 28 65 72 72 6f 72 20 63 6f 64 65 3a 20 31 37 29 0d 0a 0d 0a 20 20 20 20 20 20 20 ┆Test (error code: 17) ┆ 0xe800…e820 (116,) 20 20 20 20 20 20 84 54 68 69 73 20 74 65 73 74 20 63 68 65 63 6b 73 20 74 68 65 20 6d 65 6d 6f ┆ This test checks the memo┆ 0xe820…e840 72 79 20 63 6f 6e 74 72 6f 6c 6c 65 72 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 32 20 3a 20 a1 ┆ry controller. 2 : ┆ 0xe840…e860 44 4d 41 20 54 65 73 74 20 28 65 72 72 6f 72 20 63 6f 64 65 3a 20 30 33 20 6f 72 20 30 34 29 0d ┆DMA Test (error code: 03 or 04) ┆ 0xe860…e880 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 54 68 69 73 20 74 65 73 74 20 63 68 65 63 6b ┆ This test check┆ 0xe880…e8a0 73 20 44 4d 41 20 28 64 69 72 65 63 74 20 6d 65 6d 6f 72 79 20 61 63 63 65 73 73 29 20 74 72 61 ┆s DMA (direct memory access) tra┆ 0xe8a0…e8c0 6e 73 2d 0a 19 8d 80 80 66 65 72 73 20 62 65 74 77 65 65 6e 20 63 68 61 6e 6e 65 6c 73 20 30 20 ┆ns- fers between channels 0 ┆ 0xe8c0…e8e0 61 6e 64 20 31 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 33 20 3a 20 a1 43 54 52 20 54 65 73 74 ┆and 1. 3 : CTR Test┆ 0xe8e0…e900 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 54 68 69 73 20 74 65 73 74 20 63 68 65 63 ┆ This test chec┆ 0xe900…e920 6b 73 20 74 68 65 20 63 68 61 72 61 63 74 65 72 20 52 4f 4d 20 28 72 65 61 64 2d 6f 6e 6c 79 20 ┆ks the character ROM (read-only ┆ 0xe920…e940 0a 19 8d 80 80 6d 65 6d 6f 72 79 29 20 61 6e 64 20 73 68 61 64 6f 77 20 52 41 4d 20 28 72 61 6e ┆ memory) and shadow RAM (ran┆ 0xe940…e960 64 6f 6d 2d 61 63 63 65 73 73 20 6d 65 6d 6f 72 79 29 20 75 73 65 64 20 0a 19 8d 80 80 69 6e 20 ┆dom-access memory) used in ┆ 0xe960…e980 63 6f 6e 6a 75 6e 63 74 69 6f 6e 20 77 69 74 68 20 74 68 65 20 43 52 54 20 28 63 61 74 68 6f 64 ┆conjunction with the CRT (cathod┆ 0xe980…e9a0 65 20 72 61 79 20 74 75 62 65 29 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 4e 6f ┆e ray tube). No┆ 0xe9a0…e9c0 20 65 72 72 6f 72 20 63 6f 64 65 73 20 61 72 65 20 61 73 73 6f 63 69 61 74 65 64 20 77 69 74 68 ┆ error codes are associated with┆ 0xe9c0…e9e0 20 74 68 69 73 20 74 65 73 74 2e 20 54 68 65 20 0a 19 8d 80 80 6f 70 65 72 61 74 6f 72 20 6d 75 ┆ this test. The operator mu┆ 0xe9e0…ea00 73 74 20 a1 6f 62 73 65 72 76 65 20 74 68 65 20 64 69 73 70 6c 61 79 e1 a1 20 73 63 72 65 65 6e ┆st observe the display screen┆ 0xea00…ea20 (117,) e1 20 64 75 72 69 6e 67 20 74 68 65 20 0a 19 8d 80 80 74 65 73 74 20 61 6e 64 2c 20 69 66 20 6e ┆ during the test and, if n┆ 0xea20…ea40 65 65 64 20 62 65 2c 20 68 6f 6c 64 20 74 68 65 20 43 54 52 4c 20 6b 65 79 20 64 65 70 72 65 73 ┆eed be, hold the CTRL key depres┆ 0xea40…ea60 73 65 64 20 74 6f 20 0a 19 8d 80 80 66 72 65 65 7a 65 20 74 68 65 20 70 69 63 74 75 72 65 2e 0d ┆sed to freeze the picture. ┆ 0xea60…ea80 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 54 77 65 6c 76 65 20 73 65 74 73 20 6f 66 20 ┆ Twelve sets of ┆ 0xea80…eaa0 74 68 65 20 31 32 38 20 67 72 61 70 68 69 63 20 73 79 6d 62 6f 6c 73 20 69 6e 20 74 68 65 20 64 ┆the 128 graphic symbols in the d┆ 0xeaa0…eac0 69 73 2d 20 0a 19 8d 80 80 70 6c 61 79 61 62 6c 65 20 63 68 61 72 61 63 74 65 72 20 72 65 70 65 ┆is- playable character repe┆ 0xeac0…eae0 72 74 6f 69 72 65 20 61 72 65 20 73 68 6f 77 6e 20 66 6f 72 20 31 30 20 0a 19 8d 80 80 73 65 63 ┆rtoire are shown for 10 sec┆ 0xeae0…eb00 6f 6e 64 73 2e 20 54 68 69 73 20 70 69 63 74 75 72 65 20 73 68 6f 75 6c 64 20 6e 6f 74 20 63 68 ┆onds. This picture should not ch┆ 0xeb00…eb20 61 6e 67 65 2e 20 41 20 63 68 61 6e 67 65 20 0a 19 8d 80 80 69 6e 64 69 63 61 74 65 73 20 61 6e ┆ange. A change indicates an┆ 0xeb20…eb2b 20 65 72 72 6f 72 2e 0d 0a 0d 0a ┆ error. ┆ 0xeb2b…eb2e FormFeed { 0xeb2b…eb2e 0c 83 b8 ┆ ┆ 0xeb2b…eb2e } 0xeb2e…eb40 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 54 68 65 ┆ The┆ 0xeb40…eb60 6e 20 61 20 70 69 63 74 75 72 65 20 63 6f 6e 73 69 73 74 69 6e 67 20 6f 66 20 61 6c 74 65 72 6e ┆n a picture consisting of altern┆ 0xeb60…eb80 61 74 69 6e 67 20 6c 69 67 68 74 20 61 6e 64 20 0a 19 8d 80 80 64 61 72 6b 20 76 65 72 74 69 63 ┆ating light and dark vertic┆ 0xeb80…eba0 61 6c 20 62 61 72 73 20 69 73 20 73 68 6f 77 6e 2e 20 54 68 69 73 20 6c 69 67 68 74 2d 61 6e 64 ┆al bars is shown. This light-and┆ 0xeba0…ebc0 2d 64 61 72 6b 20 0a 19 8d 80 80 70 61 74 74 65 72 6e 20 73 68 6f 75 6c 64 20 72 65 76 65 72 73 ┆-dark pattern should revers┆ 0xebc0…ebe0 65 20 69 74 73 65 6c 66 20 61 66 74 65 72 20 61 70 70 72 6f 78 69 6d 61 74 65 6c 79 20 35 20 0a ┆e itself after approximately 5 ┆ 0xebe0…ec00 19 8d 80 80 73 65 63 6f 6e 64 73 2e 20 46 61 69 6c 75 72 65 20 74 6f 20 64 6f 20 73 6f 20 69 6e ┆ seconds. Failure to do so in┆ 0xec00…ec20 (118,) 64 69 63 61 74 65 73 20 61 6e 20 65 72 72 6f 72 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 34 20 ┆dicates an error. 4 ┆ 0xec20…ec40 3a 20 a1 43 54 43 20 54 65 73 74 20 28 65 72 72 6f 72 20 63 6f 64 65 3a 20 30 39 20 6f 72 20 30 ┆: CTC Test (error code: 09 or 0┆ 0xec40…ec60 42 29 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 54 68 69 73 20 74 65 73 74 20 63 68 ┆B) This test ch┆ 0xec60…ec80 65 63 6b 73 20 74 68 65 20 43 54 43 20 28 63 6f 75 6e 74 65 72 20 74 69 6d 65 72 20 63 69 72 63 ┆ecks the CTC (counter timer circ┆ 0xec80…eca0 75 69 74 29 20 66 6f 72 20 0a 19 8d 80 80 69 6e 74 65 72 72 75 70 74 20 67 65 6e 65 72 61 74 69 ┆uit) for interrupt generati┆ 0xeca0…ecc0 6f 6e 20 61 6e 64 20 69 6e 74 65 72 72 75 70 74 20 61 64 64 72 65 73 73 69 6e 67 2e 0d 0a 0d 0a ┆on and interrupt addressing. ┆ 0xecc0…ece0 20 20 20 20 20 20 20 20 20 35 20 3a 20 a1 50 72 69 6e 74 65 72 20 43 68 61 6e 6e 65 6c 20 54 65 ┆ 5 : Printer Channel Te┆ 0xece0…ed00 73 74 20 28 65 72 72 6f 72 20 63 6f 64 65 3a 20 43 30 20 6f 72 20 44 30 29 0d 0a 0d 0a 20 20 20 ┆st (error code: C0 or D0) ┆ 0xed00…ed20 20 20 20 20 20 20 20 20 20 20 84 54 68 69 73 20 74 65 73 74 20 63 68 65 63 6b 73 20 74 68 65 20 ┆ This test checks the ┆ 0xed20…ed40 53 49 4f 20 28 73 65 72 69 61 6c 20 69 6e 70 75 74 2f 6f 75 74 70 75 74 29 20 0a 19 8d 80 80 63 ┆SIO (serial input/output) c┆ 0xed40…ed60 68 61 6e 6e 65 6c 20 75 73 65 64 20 66 6f 72 20 74 68 65 20 70 72 69 6e 74 65 72 2e 20 49 66 20 ┆hannel used for the printer. If ┆ 0xed60…ed80 6e 6f 20 70 72 69 6e 74 65 72 20 69 73 20 0a 19 8d 80 80 63 6f 6e 6e 65 63 74 65 64 20 74 6f 20 ┆no printer is connected to ┆ 0xed80…eda0 74 68 65 20 64 69 73 70 6c 61 79 20 75 6e 69 74 2c 20 74 68 65 20 74 65 73 74 20 69 73 20 73 6b ┆the display unit, the test is sk┆ 0xeda0…edc0 69 70 70 65 64 2e 20 0a 19 8d 80 80 54 68 69 73 20 69 73 20 61 6c 73 6f 20 74 68 65 20 63 61 73 ┆ipped. This is also the cas┆ 0xedc0…ede0 65 2c 20 69 66 20 74 68 65 20 4f 46 46 4c 49 4e 45 20 62 69 74 20 69 73 20 73 65 74 20 28 74 6f ┆e, if the OFFLINE bit is set (to┆ 0xede0…ee00 20 0a 19 8d 80 80 22 6f 66 66 6c 69 6e 65 22 29 20 77 68 65 6e 20 74 68 65 20 70 72 69 6e 74 65 ┆ "offline") when the printe┆ 0xee00…ee20 (119,) 72 20 63 68 61 6e 6e 65 6c 20 74 65 73 74 20 69 73 20 65 6e 74 65 72 65 64 2e 0d 0a 0d 0a 20 20 ┆r channel test is entered. ┆ 0xee20…ee40 20 20 20 20 20 20 20 20 20 20 20 84 54 68 65 20 74 65 73 74 20 63 61 75 73 65 73 20 74 68 65 20 ┆ The test causes the ┆ 0xee40…ee60 63 6f 6e 74 65 6e 74 73 20 6f 66 20 61 20 62 75 66 66 65 72 20 6f 66 20 34 2c 30 39 36 20 0a 19 ┆contents of a buffer of 4,096 ┆ 0xee60…ee80 8d 80 80 70 72 69 6e 74 61 62 6c 65 20 63 68 61 72 61 63 74 65 72 73 20 74 6f 20 62 65 20 74 72 ┆ printable characters to be tr┆ 0xee80…eea0 61 6e 73 6d 69 74 74 65 64 20 74 6f 20 74 68 65 20 0a 19 8d 80 80 70 72 69 6e 74 65 72 2e 20 54 ┆ansmitted to the printer. T┆ 0xeea0…eec0 68 65 20 74 72 61 6e 73 6d 69 73 73 69 6f 6e 20 73 70 65 65 64 20 69 73 20 64 65 74 65 72 6d 69 ┆he transmission speed is determi┆ 0xeec0…eee0 6e 65 64 20 62 79 20 0a 19 8d 80 80 74 68 65 20 76 61 6c 75 65 20 6f 66 20 74 68 65 20 72 65 6c ┆ned by the value of the rel┆ 0xeee0…ef00 65 76 61 6e 74 20 4e 56 4d 20 70 61 72 61 6d 65 74 65 72 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 ┆evant NVM parameter. ┆ 0xef00…ef20 20 20 20 20 20 84 54 68 65 20 62 75 66 66 65 72 20 63 6f 6e 74 61 69 6e 73 20 63 68 61 72 61 63 ┆ The buffer contains charac┆ 0xef20…ef40 74 65 72 73 20 77 69 74 68 20 64 65 63 69 6d 61 6c 20 76 61 6c 75 65 73 20 0a 19 8d 80 80 69 6e ┆ters with decimal values in┆ 0xef40…ef60 20 74 68 65 20 69 6e 74 65 72 76 61 6c 20 33 32 2e 2e 31 32 37 2e 20 45 76 65 72 79 20 62 75 66 ┆ the interval 32..127. Every buf┆ 0xef60…ef80 66 65 72 20 62 65 67 69 6e 73 20 77 69 74 68 20 0a 19 8d 80 80 74 68 65 20 63 6f 6e 74 72 6f 6c ┆fer begins with the control┆ 0xef80…efa0 20 63 68 61 72 61 63 74 65 72 73 20 43 52 20 28 63 61 72 72 69 61 67 65 20 72 65 74 75 72 6e 29 ┆ characters CR (carriage return)┆ 0xefa0…efc0 20 61 6e 64 20 46 46 20 0a 19 8d 80 80 28 66 6f 72 6d 20 66 65 65 64 29 2e 20 46 6f 72 20 65 76 ┆ and FF (form feed). For ev┆ 0xefc0…efe0 65 72 79 20 38 30 20 63 68 61 72 61 63 74 65 72 73 2c 20 74 68 65 20 63 6f 6e 74 72 6f 6c 20 0a ┆ery 80 characters, the control ┆ 0xefe0…f000 19 8d 80 80 63 68 61 72 61 63 74 65 72 73 20 43 52 20 28 63 61 72 72 69 61 67 65 20 72 65 74 75 ┆ characters CR (carriage retu┆ 0xf000…f020 (120,) 72 6e 29 20 61 6e 64 20 4c 46 20 28 6c 69 6e 65 20 66 65 65 64 29 20 0a 19 8d 80 80 61 72 65 20 ┆rn) and LF (line feed) are ┆ 0xf020…f040 69 6e 73 65 72 74 65 64 2e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 36 20 3a 20 a1 4e 56 4d 20 54 ┆inserted. 6 : NVM T┆ 0xf040…f060 65 73 74 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 84 54 68 65 20 4e 56 4d 20 28 6e 6f ┆est The NVM (no┆ 0xf060…f080 6e 76 6f 6c 61 74 69 6c 65 20 6d 65 6d 6f 72 79 29 20 74 65 73 74 20 69 73 20 6e 6f 74 20 72 75 ┆nvolatile memory) test is not ru┆ 0xf080…f0a0 6e 20 77 68 65 6e 20 0a 19 8d 80 80 74 68 65 20 65 78 74 65 6e 64 65 64 20 73 65 6c 66 74 65 73 ┆n when the extended selftes┆ 0xf0a0…f0c0 74 20 69 73 20 65 6e 74 65 72 65 64 20 66 72 6f 6d 20 74 68 65 20 62 6f 6f 74 6c 6f 61 64 65 72 ┆t is entered from the bootloader┆ 0xf0c0…f0e0 20 0a 19 8d 80 80 61 73 20 64 65 73 63 72 69 62 65 64 20 69 6e 20 53 65 63 74 69 6f 6e 20 42 2e ┆ as described in Section B.┆ 0xf0e0…f100 31 2e 0d 0a 0d 0a 0d 0a a1 b0 42 2e 33 20 20 20 20 20 20 45 72 72 6f 72 20 43 6f 64 65 73 0d 0a ┆1. B.3 Error Codes ┆ 0xf100…f120 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 43 6f 64 65 e1 20 20 20 a1 54 65 73 74 20 61 6e 64 20 45 ┆ Code Test and E┆ 0xf120…f140 72 72 6f 72 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 20 30 31 20 20 20 20 30 20 3a 20 70 6f 77 65 ┆rror 01 0 : powe┆ 0xf140…f160 72 2d 75 70 20 73 65 6c 66 74 65 73 74 3a 20 50 52 4f 4d 20 63 68 65 63 6b 73 75 6d 20 65 72 72 ┆r-up selftest: PROM checksum err┆ 0xf160…f180 6f 72 0d 0a 20 20 20 20 20 20 20 20 20 20 30 32 20 20 20 20 30 20 3a 20 70 6f 77 65 72 2d 75 70 ┆or 02 0 : power-up┆ 0xf180…f1a0 20 73 65 6c 66 74 65 73 74 3a 20 52 41 4d 20 6d 65 6d 6f 72 79 20 65 72 72 6f 72 0d 0a 20 20 20 ┆ selftest: RAM memory error ┆ 0xf1a0…f1c0 20 20 20 20 20 20 20 30 33 20 20 20 20 32 20 3a 20 44 4d 41 20 74 65 73 74 3a 20 64 61 74 61 20 ┆ 03 2 : DMA test: data ┆ 0xf1c0…f1e0 65 72 72 6f 72 0d 0a 20 20 20 20 20 20 20 20 20 20 30 34 20 20 20 20 32 20 3a 20 84 44 4d 41 20 ┆error 04 2 : DMA ┆ 0xf1e0…f200 74 65 73 74 3a 20 74 65 72 6d 69 6e 61 6c 20 63 6f 75 6e 74 20 62 69 74 20 6e 6f 74 20 73 65 74 ┆test: terminal count bit not set┆ 0xf200…f220 (121,) 20 62 79 20 44 4d 41 20 0a 19 94 80 80 63 68 61 6e 6e 65 6c 20 31 20 77 69 74 68 69 6e 20 32 30 ┆ by DMA channel 1 within 20┆ 0xf220…f240 30 20 6d 69 6c 6c 69 73 65 63 6f 6e 64 73 0d 0a 20 20 20 20 20 20 20 20 20 20 30 39 20 20 20 20 ┆0 milliseconds 09 ┆ 0xf240…f260 34 20 3a 20 43 54 43 20 74 65 73 74 3a 20 67 65 6e 65 72 61 74 69 6f 6e 20 6f 66 20 61 6e 20 75 ┆4 : CTC test: generation of an u┆ 0xf260…f280 6e 77 61 6e 74 65 64 20 69 6e 74 65 72 72 75 70 74 0d 0a 20 20 20 20 20 20 20 20 20 20 30 42 20 ┆nwanted interrupt 0B ┆ 0xf280…f2a0 20 20 20 34 20 3a 20 84 43 54 43 20 74 65 73 74 3a 20 74 69 6d 65 6f 75 74 20 6f 66 20 61 20 43 ┆ 4 : CTC test: timeout of a C┆ 0xf2a0…f2c0 54 43 20 63 68 61 6e 6e 65 6c 20 77 69 74 68 20 6e 6f 20 0a 19 94 80 80 69 6e 74 65 72 72 75 70 ┆TC channel with no interrup┆ 0xf2c0…f2e0 74 0d 0a 20 20 20 20 20 20 20 20 20 20 31 37 20 20 20 20 31 20 3a 20 6d 65 6d 6f 72 79 20 72 65 ┆t 17 1 : memory re┆ 0xf2e0…f300 66 72 65 73 68 20 74 65 73 74 3a 20 64 61 74 61 20 65 72 72 6f 72 0d 0a 20 20 20 20 20 20 20 20 ┆fresh test: data error ┆ 0xf300…f320 20 20 43 30 20 20 20 20 35 20 3a 20 84 70 72 69 6e 74 65 72 20 63 68 61 6e 6e 65 6c 20 74 65 73 ┆ C0 5 : printer channel tes┆ 0xf320…f340 74 3a 20 63 68 61 6e 67 65 20 6f 66 20 42 55 53 59 20 62 69 74 20 66 72 6f 6d 20 0a 19 94 80 80 ┆t: change of BUSY bit from ┆ 0xf340…f360 22 6e 6f 74 20 62 75 73 79 22 20 74 6f 20 22 62 75 73 79 22 20 64 75 72 69 6e 67 20 65 78 65 63 ┆"not busy" to "busy" during exec┆ 0xf360…f380 75 74 69 6f 6e 0d 0a 20 20 20 20 20 20 20 20 20 20 44 30 20 20 20 20 35 20 3a 20 84 70 72 69 6e ┆ution D0 5 : prin┆ 0xf380…f3a0 74 65 72 20 63 68 61 6e 6e 65 6c 20 74 65 73 74 3a 20 63 68 61 6e 67 65 20 6f 66 20 4f 46 46 4c ┆ter channel test: change of OFFL┆ 0xf3a0…f3c0 49 4e 45 20 62 69 74 20 0a 19 94 80 80 66 72 6f 6d 20 22 6e 6f 74 20 6f 66 66 6c 69 6e 65 22 20 ┆INE bit from "not offline" ┆ 0xf3c0…f3e0 74 6f 20 22 6f 66 66 6c 69 6e 65 22 20 64 75 72 69 6e 67 20 0a 19 94 80 80 65 78 65 63 75 74 69 ┆to "offline" during executi┆ 0xf3e0…f400 6f 6e 0d 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 46 6f 72 20 61 20 64 65 74 61 69 6c 65 64 20 64 ┆on For a detailed d┆ 0xf400…f420 (122,) 65 73 63 72 69 70 74 69 6f 6e 20 6f 66 20 74 68 65 20 65 78 74 65 6e 64 65 64 20 73 65 6c 66 74 ┆escription of the extended selft┆ 0xf420…f437 65 73 74 2c 20 73 65 65 20 0a 19 89 80 80 28 31 33 29 2e 0d 0a 0d 0a ┆est, see (13). ┆ 0xf437…f43a FormFeed { 0xf437…f43a 0c 83 d8 ┆ ┆ 0xf437…f43a } 0xf43a…f440 0a a1 b0 43 2e 20 ┆ C. ┆ 0xf440…f460 20 20 20 20 20 20 53 55 52 56 45 59 20 4f 46 20 53 54 41 54 55 53 20 4d 45 53 53 41 47 45 53 0d ┆ SURVEY OF STATUS MESSAGES ┆ 0xf460…f480 0a 0d 0a 20 20 20 20 20 20 20 20 20 84 a1 53 74 61 74 75 73 20 4c 69 6e 65 20 50 6f 73 69 74 69 ┆ Status Line Positi┆ 0xf480…f4a0 6f 6e 73 3a 20 31 2d 37 38 e1 e1 20 20 20 20 a1 37 39 2d 38 30 e1 20 20 20 a1 a1 a1 e1 e1 a1 57 ┆ons: 1-78 79-80 W┆ 0xf4a0…f4c0 68 a1 e1 a1 65 72 65 20 44 a1 e1 a1 a1 65 a1 e1 a1 73 63 72 69 62 65 64 0d 0a 0d 0a 20 20 20 20 ┆h ere D e scribed ┆ 0xf4c0…f4e0 20 20 20 20 20 52 43 38 35 35 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ RC855 ┆ 0xf4e0…f500 20 20 20 20 20 20 20 20 20 20 20 20 84 33 2e 32 2c 20 33 2e 32 2e 32 2c 20 20 20 20 20 20 20 20 ┆ 3.2, 3.2.2, ┆ 0xf500…f520 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ┆ 0xf520…f540 20 0a 19 b0 80 80 33 2e 33 2e 33 2e 32 0d 0a 20 20 20 20 20 20 20 20 20 52 43 38 35 35 20 20 20 ┆ 3.3.3.2 RC855 ┆ 0xf540…f560 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4c 50 20 20 20 20 20 20 33 ┆ LP 3┆ 0xf560…f580 2e 33 2e 31 0d 0a 20 20 20 20 20 20 20 20 20 52 43 38 35 35 20 20 20 20 20 20 20 20 20 20 20 20 ┆.3.1 RC855 ┆ 0xf580…f5a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4c 49 20 20 20 20 20 20 33 2e 33 2e 31 0d 0a 20 20 20 ┆ LI 3.3.1 ┆ 0xf5a0…f5c0 20 20 20 20 20 20 52 43 38 35 35 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ RC855 ┆ 0xf5c0…f5e0 20 20 20 20 20 4c 44 20 20 20 20 20 20 33 2e 33 2e 32 0d 0a 20 20 20 20 20 20 20 20 20 52 43 38 ┆ LD 3.3.2 RC8┆ 0xf5e0…f600 35 35 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4c 43 20 20 ┆55 LC ┆ 0xf600…f620 (123,) 20 20 20 20 33 2e 33 2e 33 2e 31 0d 0a 20 20 20 20 20 20 20 20 20 52 43 38 35 35 20 20 20 20 20 ┆ 3.3.3.1 RC855 ┆ 0xf620…f640 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 4c 41 20 20 20 20 20 20 33 2e 33 ┆ LA 3.3┆ 0xf640…f660 2e 33 2e 33 0d 0a 20 20 20 20 20 20 20 20 20 52 43 38 35 35 20 63 68 65 63 6b 73 75 6d 20 65 72 ┆.3.3 RC855 checksum er┆ 0xf660…f680 72 6f 72 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 33 2e 32 0d 0a 20 20 20 20 20 ┆ror 3.2 ┆ 0xf680…f6a0 20 20 20 20 52 43 38 35 35 20 6d 65 6d 6f 72 79 20 65 72 72 6f 72 20 2e 2e 2e 20 20 20 20 20 20 ┆ RC855 memory error ... ┆ 0xf6a0…f6c0 20 20 20 20 20 20 20 20 20 20 20 33 2e 32 0d 0a 20 20 20 20 20 20 20 20 20 52 43 38 35 35 20 2d ┆ 3.2 RC855 -┆ 0xf6c0…f6e0 20 49 6e 73 65 72 74 20 64 69 73 6b 65 74 74 65 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ Insert diskette ┆ 0xf6e0…f700 33 2e 33 2e 31 2c 20 33 2e 33 2e 32 0d 0a 20 20 20 20 20 20 20 20 20 52 43 38 35 35 20 4c 6f 61 ┆3.3.1, 3.3.2 RC855 Loa┆ 0xf700…f720 64 20 73 74 61 74 75 73 3a 20 48 61 72 64 20 65 72 72 6f 72 20 20 20 20 20 20 20 20 20 20 33 2e ┆d status: Hard error 3.┆ 0xf720…f740 33 2e 32 0d 0a 20 20 20 20 20 20 20 20 20 52 43 38 35 35 20 4c 6f 61 64 20 73 74 61 74 75 73 3a ┆3.2 RC855 Load status:┆ 0xf740…f760 20 48 61 72 64 20 65 72 72 6f 72 20 20 4c 49 20 20 20 20 20 20 33 2e 33 2e 31 0d 0a 20 20 20 20 ┆ Hard error LI 3.3.1 ┆ 0xf760…f780 20 20 20 20 20 52 43 38 35 35 20 4c 6f 61 64 20 73 74 61 74 75 73 3a 0d 0a 20 20 20 20 20 20 20 ┆ RC855 Load status: ┆ 0xf780…f7a0 20 20 20 20 20 20 20 20 44 69 73 6b 65 74 74 65 20 65 72 72 6f 72 20 20 20 20 20 20 20 20 20 20 ┆ Diskette error ┆ 0xf7a0…f7c0 20 4c 44 20 20 20 20 20 20 33 2e 33 2e 32 0d 0a 20 20 20 20 20 20 20 20 20 52 43 38 35 35 20 48 ┆ LD 3.3.2 RC855 H┆ 0xf7c0…f7e0 61 72 64 20 64 69 73 6b 3a 20 42 61 64 20 73 65 63 74 6f 72 20 20 20 20 20 20 20 20 20 20 20 20 ┆ard disk: Bad sector ┆ 0xf7e0…f800 33 2e 33 2e 32 0d 0a 20 20 20 20 20 20 20 20 20 52 43 38 35 35 20 48 61 72 64 20 64 69 73 6b 3a ┆3.3.2 RC855 Hard disk:┆ 0xf800…f820 (124,) 20 49 6e 76 61 6c 69 64 20 69 64 20 20 20 20 20 20 20 20 20 20 20 20 33 2e 33 2e 32 0d 0a 20 20 ┆ Invalid id 3.3.2 ┆ 0xf820…f840 20 20 20 20 20 20 20 52 43 38 35 35 20 43 55 20 64 69 73 63 6f 6e 6e 65 63 74 65 64 20 20 20 20 ┆ RC855 CU disconnected ┆ 0xf840…f860 20 20 20 20 20 20 20 20 20 20 20 20 20 20 33 2e 33 2e 33 2e 32 0d 0a 20 20 20 20 20 20 20 20 20 ┆ 3.3.3.2 ┆ 0xf860…f880 52 43 38 35 35 20 43 55 20 64 69 73 63 6f 6e 6e 65 63 74 65 64 20 20 20 20 20 20 20 20 20 20 4c ┆RC855 CU disconnected L┆ 0xf880…f8a0 41 20 20 20 20 20 20 33 2e 33 2e 33 2e 33 0d 0a 20 20 20 20 20 20 20 20 20 52 43 38 35 35 20 43 ┆A 3.3.3.3 RC855 C┆ 0xf8a0…f8c0 55 20 70 72 6f 67 72 61 6d 20 6e 6f 74 20 66 6f 75 6e 64 20 20 20 20 20 4c 41 20 20 20 20 20 20 ┆U program not found LA ┆ 0xf8c0…f8e0 33 2e 33 2e 33 2e 33 0d 0a 20 20 20 20 20 20 20 20 20 52 43 38 35 35 20 43 55 20 64 69 73 6b 65 ┆3.3.3.3 RC855 CU diske┆ 0xf8e0…f900 74 74 65 20 65 72 72 6f 72 20 20 20 20 20 20 20 20 4c 41 20 20 20 20 20 20 33 2e 33 2e 33 2e 33 ┆tte error LA 3.3.3.3┆ 0xf900…f920 0d 0a 20 20 20 20 20 20 20 20 20 52 43 38 35 35 20 43 68 65 63 6b 73 75 6d 20 65 72 72 6f 72 20 ┆ RC855 Checksum error ┆ 0xf920…f940 20 20 20 20 20 20 20 20 20 20 4c 50 20 20 20 20 20 20 33 2e 33 2e 31 0d 0a 20 20 20 20 20 20 20 ┆ LP 3.3.1 ┆ 0xf940…f960 20 20 52 43 38 35 35 20 43 68 65 63 6b 73 75 6d 20 65 72 72 6f 72 20 20 20 20 20 20 20 20 20 20 ┆ RC855 Checksum error ┆ 0xf960…f980 20 4c 49 20 20 20 20 20 20 33 2e 33 2e 31 0d 0a 20 20 20 20 20 20 20 20 20 52 43 38 35 35 20 43 ┆ LI 3.3.1 RC855 C┆ 0xf980…f9a0 68 65 63 6b 73 75 6d 20 65 72 72 6f 72 20 20 20 20 20 20 20 20 20 20 20 4c 41 20 20 20 20 20 20 ┆hecksum error LA ┆ 0xf9a0…f9c0 33 2e 33 2e 33 2e 33 0d 0a 0d 0a 1a 1a 74 69 6f 6e 20 61 6e 64 20 53 79 73 74 65 6d 20 0a 19 8f ┆3.3.3.3 tion and System ┆ 0xf9c0…f9e0 80 84 43 75 73 74 6f 6d 69 7a 61 74 69 6f 6e 20 4d 61 6e 75 61 6c 0d 0a 20 20 20 20 20 20 20 20 ┆ Customization Manual ┆ 0xf9e0…fa00 20 20 20 20 20 20 20 6e 67 20 47 75 69 64 65 0d 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 ┆ ng Guide ┆