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Notes: CPS/SDS/041
Names: »2108A «
Derivation
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WangText
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PRINTER
DETAILED DESIGN SPECIFICATION…02…ISSUE 1…02…CAMPS
4.2.1.3 D̲a̲t̲a̲ ̲F̲l̲o̲w̲ ̲a̲n̲d̲ ̲C̲o̲n̲t̲r̲o̲l̲ ̲L̲o̲g̲i̲c̲\̲w̲i̲t̲h̲i̲n̲ ̲U̲P̲C̲O̲
The following HIPO-diagrams show the Data Flow of UPCO.
Fra Diag. ID: 4.2.1.3.1 - 4.2.1.3.5
4.2.1.4 U̲P̲C̲O̲ ̲M̲o̲d̲u̲l̲e̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲s̲
4.2.1.4.1 U̲P̲C̲O̲ ̲M̲a̲i̲n̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
4.2.1.4.1.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The responsibility of this module is to receive all
input items that are associated with semaphore PRIS
̲S1, and to process the ones that arrives in the Print
Queue.
4.2.1.4.1.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) UPCO ̲MAIN
b) UPCO ̲MAIN (R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R6 LINK (DEST)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 - R7 (DEST)
F̲a̲t̲a̲l̲ ̲E̲r̲r̲o̲r̲s̲
None
4.2.1.4.1.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
4.2.1.4.1.3.1 C̲H̲E̲C̲K̲ ̲S̲U̲B̲Q̲U̲E̲U̲E̲
If a print item is received and PRINTER ̲BUSY ̲FLAG is
set the item must be a FLASH item and ITEM ̲PRE ̲EMPTED
FLAG mist be due. These conditions are checked by this
procedure.
4.2.1.4.1.3.2 P̲R̲O̲ ̲P̲R̲I̲N̲T̲Q̲ ̲I̲T̲E̲M̲
Processes the arrived printqueue items.
4.2.1.4.1.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲s̲
D̲a̲t̲a̲ ̲R̲e̲f̲e̲r̲e̲n̲c̲e̲s̲
ACTIVE ̲FLAG,
CLOSE ̲DOWN ̲FLAG,
INPUT ̲QEL,
INPUT ̲ATTR,
PRINTER ̲ERROR ̲FLAG,
AWAITING ̲LOG ̲ACK ̲FLAG,
PRINTER ̲BUSY ̲FLAG,
ITEM ̲PREEMPTED ̲FLAG,
PRINTING ̲SYIE ̲TAB ̲FLAG,
OPERATION,
SUBQUEUE: Ref. sec. 4.2.1.5
4.2.1.4.1.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
Items received in the semaphore PRIS ̲S1 are analysed.
Print Queue items are processed in this module by the
procedures PROC ̲PRINTEQ ̲ITEM and CHECK ̲SUBQUEUE.
Command Queue- and
PROP-items are processed by other modules.
Unexpected items will invoke the error reporting
procedure,which handles
all internally detected
errors.
UPCO-MAIN
SET ACTIVE ̲FLAG = FALSE
DEFINE ̲FORMAT ̲AREA
R̲E̲C̲E̲I̲V̲E̲ ̲C̲M̲D̲ ̲(̲4̲.̲2̲.̲1̲.̲6̲.̲7̲)̲
FOREVER LOOP
WAIT ̲OPSEM(PRIS ̲S1)(OPERATION): OK
CASE OPERATION.ID OF:
CMDQ ̲ITEM? P̲R̲O̲C̲E̲S̲S̲ ̲C̲M̲D̲ ̲Q̲ ̲I̲T̲E̲M̲(̲4̲.̲2̲.̲1̲.̲4̲.̲2̲)̲
PRINTQ ̲ITEM? P̲R̲O̲C̲E̲S̲S̲ ̲P̲R̲I̲N̲T̲ ̲Q̲ ̲I̲T̲E̲M̲
PROP ̲ITEM? P̲R̲O̲C̲E̲S̲S̲ ̲P̲R̲O̲P̲ ̲I̲T̲E̲M̲(̲4̲.̲2̲.̲1̲.̲4̲.̲5̲)̲
OTHERWISE? E̲R̲R̲O̲R̲ ̲R̲E̲P̲ ̲(̲I̲N̲I̲T̲,̲ ̲C̲O̲N̲,̲ ̲1̲,̲
̲1̲,̲ ̲0̲,̲ ̲1̲,̲ ̲N̲I̲L̲)̲(̲4̲.̲1̲.̲5̲.̲1̲)̲
END CASE
END FOREVER LOOP
END
Fig. 4.2.1.4.1.5-1
4.2.1.4.2 P̲r̲o̲c̲e̲s̲s̲ ̲C̲M̲D̲ ̲Q̲ ̲I̲t̲e̲m̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
4.2.1.4.2.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The module analyses the items arriving in the Command
Queue.
Stop, Close and Resume-DEMCO Commands, Timeouts and
Log-Acknowledges are processed by this module.
Start DEMCO-Command and
FLASH Notifications are processed by other modules.
4.2.1.4.2.2 M̲o̲d̲u̲l̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) PROCESS ̲CMD ̲Q ̲ITEM
b) PROCESS ̲CMD ̲Q ̲ITEM(R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲
R6 LINK
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 - R7 (DEST)
F̲a̲t̲a̲l̲ ̲E̲r̲r̲o̲r̲s̲
None
4.2.1.4.2.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
4.2.1.4.2.3.1 C̲L̲O̲S̲E̲ ̲D̲O̲W̲N̲ ̲P̲R̲O̲C̲
Carries out processing of a CLOSE ̲DOWN command from
DEMCO.
4.2.1.4.2.3.2 R̲E̲S̲U̲M̲E̲ ̲P̲R̲O̲C̲
Processes a RESUME ̲COMMAND form DEMCO by restarting
a possible interrupted item.
4.2.1.4.2.3.3 A̲N̲A̲L̲Y̲S̲E̲ ̲S̲S̲C̲ ̲C̲M̲D̲
Analyses and takes action on a received SSC (DEMCO)
commando.
4.2.1.4.2.3.4 A̲N̲A̲L̲Y̲S̲E̲ ̲T̲I̲M̲E̲O̲U̲T̲
Processes an arrived FLASH timeout. It cheks whether
an item is to be preempted or not.
4.2.1.4.2.3.5 A̲N̲A̲L̲Y̲S̲E̲ ̲A̲C̲K̲N̲O̲W̲L̲E̲D̲G̲E̲
Processes LOG ̲ACKs and determines which action to be
dependent of the current state of the subprocess.
4.2.1.4.2.3.6 A̲N̲A̲L̲Y̲S̲E̲ ̲T̲E̲P̲ ̲I̲N̲T̲E̲R̲N̲A̲L̲
Processes RETURN ̲SYIE ̲TAB ̲FILE commands from SPIP (Supervisor
Printer Process).
4.2.1.4.2.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲s̲
D̲a̲t̲a̲ ̲R̲e̲f̲e̲r̲e̲n̲c̲e̲s̲
PRT ̲DATA
4.2.1.4.2.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
The module receives the CMD ̲Q items and analyses them
by testing the QEL-Attributes and the internal flags.
The most important actions taken by this module are:
invoking other modules, sending commands to PROP, requesting
timeouts and manipulating the flags.
PROCESS ̲CMD ̲Q ̲ITEM
PENDING ̲INIT ̲RECEIVE ̲CMD EQ FALSE?
SET PENDING ̲INIT ̲RECEIVE ̲CMD = FALSE
E̲R̲R̲O̲R̲ ̲R̲E̲P̲(̲I̲N̲T̲,̲ ̲C̲O̲N̲,̲ ̲1̲,̲ ̲2̲,̲ ̲0̲,̲ ̲1̲,̲ ̲N̲I̲L̲)̲(̲4̲.̲1̲.̲5̲.̲1̲)̲
CASE WAIT ̲SYSTEM ̲CALL(OPERATION)
(ATTR, QEL, SUBQUEUE, CC): ERROR
̲OK
ERROR? ANALYZE ̲ERROR(CC,0): OK
OK? ATTR NE INPUT ̲ATTR? E̲R̲R̲O̲R̲ ̲R̲E̲P̲(̲I̲N̲T̲,̲
̲G̲U̲P̲,̲ ̲1̲,̲ ̲2̲,̲ ̲0̲,̲
2̲,̲
̲N̲I̲L̲)̲(̲4̲.̲1̲.̲5̲.̲1̲)̲
SET INPUT ̲QEL = QEL
CASE INPUT ̲ATTR.HEADER.MAINTYPE OF:
SSC ̲COMMAND? A̲N̲A̲L̲Y̲S̲E̲ ̲S̲S̲C̲ ̲C̲M̲D̲
TIME ̲OUT? A̲N̲A̲L̲Y̲S̲E̲ ̲T̲I̲M̲E̲ ̲O̲U̲T̲
FLASH ̲NOTIFICATION?
A̲N̲A̲L̲Y̲S̲E̲ ̲F̲L̲A̲S̲H̲ ̲N̲O̲T̲I̲F̲I̲C̲A̲T̲I̲O̲N̲(̲4̲.̲2̲.̲1̲.̲4̲.̲4̲)̲
ACK? A̲N̲A̲L̲Y̲S̲E̲ ̲A̲C̲K̲N̲O̲W̲L̲E̲D̲G̲E̲
TEP ̲INTERNAL? - A̲N̲A̲L̲Y̲S̲E̲ ̲T̲E̲P̲ ̲I̲N̲T̲E̲R̲N̲A̲L̲
OTHERWISE? E̲R̲R̲O̲R̲ ̲R̲E̲P̲(̲Q̲E̲R̲,̲ ̲C̲O̲N̲,̲
̲1̲,̲ ̲2̲,̲ ̲0̲,̲ ̲3̲,̲
Q̲E̲L̲)̲(̲4̲.̲1̲.̲5̲.̲1̲)̲
R̲E̲C̲E̲I̲V̲E̲ ̲C̲M̲D̲(̲4̲.̲2̲.̲1̲.̲6̲.̲7̲)̲
END ̲CASE
END ̲CASE
END
Fig. 4.2.1.4.2-1
4.2.1.4.3 U̲P̲C̲O̲ ̲I̲N̲I̲T̲I̲A̲L̲I̲Z̲A̲T̲I̲O̲N̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
4.2.1.4.3.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
This module is called by the PROCESS ̲CMD ̲Q ̲ITEM-module
and takes care of the initializing actions connected
with UPCO. It reads the appropriate system parameters,
connects the subprocess to the printer and the Format
Handler, initializes some of the variables and invokes
PROP by sending an INITIALIZE ̲PROP CMD.
4.2.1.4.3.2 I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) UPCO ̲INITIALIZATION
b) UPCO ̲INITIALIZATION (R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲
R6 LINK
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 - R7 (DEST)
F̲a̲t̲a̲l̲ ̲E̲r̲r̲o̲r̲s̲
None
4.2.1.4.3.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
N/A
4.2.1.4.3.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲s̲
D̲a̲t̲a̲ ̲R̲e̲f̲e̲r̲e̲n̲c̲e̲s̲
REF PRT ̲DATA
E̲x̲t̲e̲r̲n̲a̲l̲ ̲D̲a̲t̲a̲
DEVICE ̲TABLE : Ref. CPS/DBD/001 sec.
5.3.3
4.2.1.4.3.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
Ref. Code.
4.2.1.4.4 A̲n̲a̲l̲y̲s̲e̲ ̲F̲l̲a̲s̲h̲ ̲N̲o̲t̲i̲f̲i̲c̲a̲t̲i̲o̲n̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
4.2.1.4.4.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The module analyses the arrived FLASH Notification
and the status of the Printer Subprocess and determines
the actions to be taken.
4.2.1.4.4.2 I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) ANALYSE ̲FLASH ̲NOTIFICATION
b) ANALYSE ̲FLASH ̲NOTIFICATION (R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲
R6 LINK
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 - R7 (DEST)
F̲a̲t̲a̲l̲ ̲E̲r̲r̲o̲r̲s̲
None
4.2.1.4.4.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
N/A
4.2.1.4.4.3 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲s̲
D̲a̲t̲a̲ ̲R̲e̲f̲e̲r̲e̲n̲c̲e̲s̲
REF ̲PRT ̲DATA
L̲o̲c̲a̲l̲ ̲D̲a̲t̲a̲
PRIS ̲TIMEOUT ̲PARAM : REQUEST ̲TIME ̲RELATIVE;
4.2.1.4.4.4 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
If the Printer is out of action the arrived FLASH item
and a notification are sent to MDCO.
If the subprocess is already executing a FLASH-item,
the notification will be ignored.
If the Subprocess is not executing a FLASH-item a preemption
timeout will be requested.
ANALYSE ̲FLASH ̲NOTIFICATION
CASE ATTR.HEADER.SUBTYPE OF:
SUPERFLASH ̲ITEM ̲ARRIVED?
FLASH ̲ITEM ̲ARRIVED?
ACTIVE ̲FLAG EQ FALSE?
PRINTER ̲ERROR ̲FLAG EQ TRUE?
CLOSE ̲DOWN ̲FLAG EQ TRUE?
F̲L̲A̲S̲H̲ ̲I̲T̲E̲M̲S̲ ̲T̲O̲ ̲M̲D̲C̲O̲(̲4̲.̲2̲.̲1̲.̲4̲.̲8̲)̲
PRINTER ̲BUSY ̲FLAG EQ FALSE?
EXECUTING ̲FLASH ̲FLAG EQ TRUE?
G̲E̲T̲ ̲P̲R̲I̲N̲T̲E̲R̲ ̲P̲A̲R̲A̲M̲E̲T̲E̲R̲S̲(̲4̲.̲2̲.̲1̲.̲6̲.̲1̲)̲
R̲E̲Q̲U̲E̲S̲T̲ ̲P̲R̲E̲E̲M̲P̲T̲I̲O̲N̲ ̲T̲I̲M̲E̲O̲U̲T̲(̲-̲2̲)̲
OTHERWISE? E̲R̲R̲O̲R̲ ̲R̲E̲P̲(̲Q̲E̲R̲,̲ ̲C̲O̲N̲,̲ ̲1̲,̲4̲,̲F̲F̲F̲F̲,̲1̲,̲Q̲E̲L̲,̲R̲6̲)̲(̲4̲.̲1̲.̲5̲.̲1̲)̲
END ̲CASE
R̲E̲C̲E̲I̲V̲E̲ ̲C̲M̲D̲(̲4̲.̲2̲.̲1̲.̲6̲.̲7̲)̲
END "ANALYSE FLASH NOTIFICATION"
Fig. 4.2.1.4.4-1
4.2.1.4.5 P̲R̲O̲C̲E̲S̲S̲ ̲P̲R̲O̲P̲ ̲I̲T̲E̲M̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
4.2.1.4.5.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The module analyses the various items received from
PROP.
4.2.1.4.5.2 I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) PROCESS ̲PROP ̲ITEM
b) PROCESS ̲PROP ̲ITEM (R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲
R6 LINK
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 - R7 (DEST)
F̲a̲t̲a̲l̲ ̲E̲r̲r̲o̲r̲s̲
None
4.2.1.4.5.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
N/A
4.2.1.4.5.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
D̲a̲t̲a̲ ̲R̲e̲f̲e̲r̲e̲n̲c̲e̲s̲
Ref. PRT ̲DATA
4.2.1.4.5.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
The OPERATION.ITEM ̲NAME is tested in order to determine
the PROP item type.
If an error is reported, possible FLASH-items awaiting
execution are sent to MDCO and the PRINTER ̲ERROR ̲FLAG
is set. Destinction is made between PAPER ̲LOW and other
errors. If PAPER ̲LOW occurs the subprocess will wait
for a RESUME cmd from DEMCO.
Initialize ̲CC will cause opening for receiption of
print items.
Abandon ̲CC will cause all opened views connected with
this subprocess to be closed and all QEL's owned by
the subprocess to be returned to the queue.
…02…PROCESS ̲PROP ̲ITEM
CASE OPERATION.ITEM ̲NAME OF:
CONNECTION ̲ERROR
PAPER ̲LOW? P̲R̲O̲C̲ ̲P̲R̲O̲P̲ ̲E̲R̲R̲O̲R̲
̲R̲E̲P̲
PROP ̲INITIALIZE ̲CC? P̲R̲O̲C̲ ̲P̲R̲O̲P̲ ̲I̲N̲I̲T̲I̲A̲L̲Z̲E̲
̲C̲C̲
ABANDON ̲CC? P̲R̲O̲C̲ ̲A̲B̲A̲N̲D̲O̲N̲ ̲C̲C̲
PREEMPT ̲CC? P̲R̲O̲C̲ ̲P̲R̲E̲E̲M̲P̲T̲ ̲C̲C̲(̲4̲.̲2̲.̲1̲.̲6̲.̲8̲.̲)̲
PRINT ̲COMPLETE ̲REP? P̲R̲O̲C̲ ̲P̲R̲I̲N̲T̲ ̲C̲O̲M̲P̲L̲E̲T̲E̲
̲R̲E̲P̲
REQUEST ̲DATA? P̲R̲O̲C̲ ̲R̲E̲Q̲U̲E̲S̲T̲ ̲D̲A̲T̲A̲
OTHERWISE? E̲R̲R̲O̲R̲ ̲R̲E̲P̲(̲I̲N̲T̲,̲C̲O̲N̲,̲1̲,̲5̲,̲F̲F̲F̲F̲,̲1̲)̲(̲4̲.̲1̲.̲5̲.̲1̲)̲
END CASE
END
Fig. 4.2.1.4.5-1
4.2.1.4.6 P̲R̲I̲N̲T̲ ̲C̲O̲M̲P̲L̲E̲T̲E̲ ̲A̲C̲T̲I̲O̲N̲S̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
4.2.1.4.6.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The module determines - and carries out some of - the
actions to be taken when a printing action has been
completed.
4.2.1.4.6.2 I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) PRINT ̲COMPLETE ̲ACTIONS
b) PRINT ̲COMPLETE ̲ACTIONS (R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲
R6 LINK
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 - R7 (DEST)
F̲a̲t̲a̲l̲ ̲E̲r̲r̲o̲r̲s̲
None
4.2.1.4.6.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
4.2.1.4.6.3.1 CHECK ̲FLASH ̲QS
is used to check if any FLASH items are awaiting Print
before a preempted item is restored.
4.2.1.4.6.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
Ref. PRT ̲DATA
4.2.1.4.6.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
First possible reply is sent then the item is dismantled.
Cleaning up and appropriate accounting are carried
out. Otherwise PROP is ordered to print one more copy.
If an item is preempted it will be checked if there
are any FLASH-items awaiting printout. In case there
is at least one, the first of them will be activated.
4.2.1.4.7 U̲P̲C̲O̲ ̲P̲R̲E̲E̲M̲P̲T̲ ̲R̲E̲S̲T̲O̲R̲E̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
4.2.1.4.7.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The Module takes care of saving appropriate variables
pertinent to an item which is to be preempted. It orders
PROP to make preemption.
The Module also restores the status of an earlier preempted
item.
4.2.1.4.7.2 I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) UPCO ̲PREEMPT ̲RESTORE
(PROC ̲SWITCH: PRESTORE ̲SWITCH)
b) UPCO ̲PREEMPT ̲RESTORE(R1, R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R1 Procedure indicatior (DEST)
R6 LINK
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 - R7 (DEST)
F̲a̲t̲a̲l̲ ̲E̲r̲r̲o̲r̲s̲
None
4.2.1.4.7.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
N/A
4.2.1.4.7.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
D̲a̲t̲a̲ ̲R̲e̲f̲e̲r̲e̲n̲c̲e̲s̲
Ref. PRT ̲DATA
4.2.1.4.7.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
The module consists of two parts, one for preempting
and one for restoring. The choice between them is based
on the call-parameter PROCEDURE.
The preempting procedure stores the appropriate variable
values in a set of local variables. A preemption command
to PROP is issued.
The restoring procedure restores the values of the
earlier saved variables.
4.2.1.4.8 F̲L̲A̲S̲H̲ ̲I̲T̲E̲M̲S̲ ̲T̲O̲ ̲M̲D̲C̲O̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
4.2.1.4.8.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The module searches the FLASH Queue and sends possible
FLASH-items to MDCO.
4.2.1.4.8.2 I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) FLASH ̲ITEMS ̲TO ̲MDCO
b) FLASH ̲ITEMS ̲TO ̲MDCO (R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲
R6 LINK
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 - R7 (DEST)
F̲a̲t̲a̲l̲ ̲E̲r̲r̲o̲r̲s̲
None
4.2.1.4.8.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
4.2.1.4.8.3.1 S̲E̲N̲D̲ ̲T̲O̲ ̲M̲D̲C̲O̲
Sends items received by mainprocedure to the specified
MDCO-Subqueue together with a FLASH Notification.
4.2.1.4.8.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
D̲a̲t̲a̲ ̲R̲e̲f̲e̲r̲e̲n̲c̲e̲s̲
Ref. PRT ̲DATA
4.2.1.4.8.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
The module consists mainly of a Loop which is run through
until they are empty for the subqueues PREC1 and FLASH.
All FLASH items are sent to MDCO together with a FLASH-Notification.
4.2.1.4.9 P̲R̲I̲N̲T̲I̲N̲G̲ ̲P̲R̲E̲P̲A̲R̲A̲T̲I̲O̲N̲S̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
4.2.1.4.9.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The module takes care of the neccessary preparations
to be made before printout of an item can begin.
The Print parameters are read. For CIF items the view
is opened. For file items the SYIE ̲TAB ̲FILE is opened.
4.2.1.4.9.2 I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) PRINTING ̲PREPARATIONS
b) PRINTING ̲PREPARATIONS (R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲
R6 LINK
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 - R7 DESTROYED
F̲a̲t̲a̲l̲ ̲E̲r̲r̲o̲r̲s̲
NONE
4.2.1.4.9.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
4.2.1.4.9.3.1 P̲R̲O̲C̲ ̲I̲T̲E̲M̲ ̲N̲O̲T̲ ̲F̲O̲R̲ ̲P̲R̲I̲N̲T̲
The procedure carries out the actions to be taken when
an item not for print has been detected.
4.2.1.4.9.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
D̲a̲t̲a̲ ̲R̲e̲f̲e̲r̲e̲n̲c̲e̲s̲
Ref. PRT ̲DATA
4.2.1.4.9.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
The PRINT ̲ITEM ̲CATEGORY is determined by a separate
module and is used to destinguish between the different
item types
4.2.1.4.10 D̲E̲T̲E̲R̲M̲I̲N̲E̲ ̲P̲R̲I̲N̲T̲ ̲I̲T̲E̲M̲ ̲C̲A̲T̲E̲G̲O̲R̲Y̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲ ̲
4.2.1.4.10.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The Module that is called by the PRINTING PREPARATIONS
Module determines which category (Single QEL, Buffer
or view) the print item belongs to.
4.2.1.4.10.2 I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) DETERMINE ̲PRINT ̲ITEM ̲CATEGORY
b) DETERMINE ̲PRINT ̲ITEM ̲CATEGORY (R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲
R6 LINK
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 - R7 DESTROYED
F̲a̲t̲a̲l̲ ̲E̲r̲r̲o̲r̲s̲
NONE
4.2.1.4.10.3 M̲o̲d̲u̲l̲e̲ ̲C̲o̲m̲p̲o̲n̲e̲n̲t̲s̲
4.2.1.4.10.3.1 C̲H̲K̲ ̲M̲S̲G̲ ̲S̲U̲B̲ ̲T̲Y̲P̲
The procedure checks whether the SUBTYPE of a Message,
Comment etc. is legal.
4.2.1.4.10.3.2 G̲E̲T̲ ̲C̲O̲N̲V̲ ̲V̲D̲U̲ ̲T̲R̲A̲N̲S̲ ̲I̲D̲
The procedure fetches the logical terminal designator
from INFORMATION 1 and the transaction serial number
from INFORMATION 2 of the QEL. The logical terminal
designator is connected to a real designator and the
transaction serial no. is converted to ASCII.
4.2.1.4.10.4 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
D̲a̲t̲a̲ ̲R̲e̲f̲e̲r̲e̲n̲c̲e̲s̲
Ref. PRT ̲DATA
E̲x̲t̲e̲r̲n̲a̲l̲ ̲D̲a̲t̲a̲
PRINT ̲ACCOUNTING ̲TABLE : Ref. CPS/DBD/OO1 sec. 9
4.2.1.4.10.5 M̲o̲d̲u̲l̲e̲ ̲D̲e̲s̲i̲g̲n̲
First numerical format id is determined by casing on
MAINTYPE, SUBTYPE and FLAGS. Then the print item category
is determined. Unknown item types will be given the
category NOT ̲FOR ̲PRINT. PRINTING ̲PREP will then issue
a SEND ̲GARBLE call with Q ̲ERROR.
