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WangText
CHAPTER
6
Page #
DOCUMENT III TECHNICAL PROPOSAL Apr. 29,
1982
LIST OF CONTENTS Page
6. SOFTWARE CHARACTERISTICS................... 7
6.1 Introduction................................ 8
6.2 CR80 Standard System Software .............. 9
6.2.1 Overview of DAMOS Operational Software ..... 12
6.2.2 Security ................................... 14
6.2.3 Kernel .................................... 16
6.2.3.1 Resource Management ........................ 17
6.2.3.2 Process Management ......................... 18
6.2.3.3 Memory Management .......................... 18
6.2.3.4 Process Communication...................... 18
6.2.3.5 CPU Management.............................. 19
6.2.3.6 Processing Unit Management.................. 19
6.2.3.7 BASIC Transport Service..................... 20
6.2.3.7.1 Service Types.............................. 22
6.2.4 DAMOS Input/Output.......................... 23
6.2.4.1 File Management System...................... 25
6.2.4.1.1 Service and Volume Handling.................
25
6.2.4.1.2 Directories................................ 26
6.2.4.1.3 Files.......................................
26
6.2.4.1.3.1 File Types................................. 26
6.2.4.1.3.2 File Commands.............................. 26
6.2.4.1.4 User Handling.............................. 27
6.2.4.1.5 Disk Integrity..............................
27
6.2.4.1.5.1 Security................................... 27
6.2.4.1.5.2 Redundant Disks............................ 27
6.2.4.1.5.3 Bad Sectors............................... 28
6.2.4.1.6 Access Methods..............................
28
6.2.4.1.6.1 Unstructured Access........................ 28
6.2.4.1.6.2 Indexed Sequential Access.................. 28
6.2.4.2 Magnetic Tape File Management Syste........ 29
6.2.4.2.1 Device Functions............................
30
6.2.4.2.2 Volume Functions............................
30
6.2.4.2.3 File Functions..............................
30
6.2.4.2.4 Record Functions........................... 30
6.2.4.3 Terminal Management System.................. 31
6.2.4.3.1 Transfer of I/O Data........................
31
6.2.4.3.1.1 File Mode.................................. 31
…86…1 …02… …02… …02… …02… …02…
6.2.4.3.1.2 Communication Mode......................... 32
6.2.4.3.2 User Handling..............................
34
6.2.4.3.3 Hardware Categories.........................
34
6.2.4.3.3.1 Terminal Controllers....................... 35
6.2.4.3.3.2 Lines...................................... 35
6.2.4.3.3.3 Units...........
