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Derivation
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WangText
#
…02…CPS/SDS/041
…02…841210…02……02…
PRINTER
DETAILED DESIGN SPECIFICATION…02…ISSUE
1…02…CAMPS
4.2.1.6.9.3 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
D̲a̲t̲a̲ ̲R̲e̲f̲e̲r̲e̲n̲c̲e̲s̲:̲
Ref. PRT ̲DATA
4.2.1.6.9.4 P̲R̲O̲C̲E̲D̲U̲R̲E̲ ̲D̲e̲s̲i̲g̲n̲
Ref. code
4.2.1.6.10 C̲H̲E̲C̲K̲ ̲V̲I̲E̲W̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
4.2.1.6.10.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲c̲a̲t̲i̲o̲n̲
The procedure checks if an open view exists pertinent
to the current item. In case there is, it will be
closed. If FILE ̲IN ̲PROGRESS is true, then SYIB ̲TAB
̲FILE is closed.
4.2.1.6.10.2 I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
a) CHECK ̲VIEW
b) HECK ̲VIEW (R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲
R6 LINK
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲
R0 - R7 DESTROYED
F̲a̲t̲a̲l̲ ̲E̲r̲r̲o̲r̲s̲
NONE
4.2.1.6.10.3 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
D̲a̲t̲a̲ ̲R̲e̲f̲e̲r̲e̲n̲c̲e̲s̲
Ref. PRT ̲DATA
4.2.1.6.10.4 P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲D̲e̲s̲i̲g̲n̲
Ref. Code
4.2.1.6.11 R̲E̲P̲L̲Y̲ ̲T̲O̲ ̲S̲S̲C̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
4.2.1.6.11.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The procedure sends a reply to SSC with the specified
completion value. It is used upon completion of SSC-commands.
4.2.1.6.11.2 I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲s̲
a) REPLY TO SSC (COMPLETION VALUE: SSC COMPL: TYPE)
b) REPLY TO SSC (0, R6)
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 COMPLETION ̲VALUE (DEST)
R6 LINK (DEST)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 - R7 DESTROYED
F̲a̲t̲a̲l̲ ̲E̲r̲r̲o̲r̲s̲
NONE
4.2.1.6.11.3 D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲
D̲a̲t̲a̲ ̲R̲e̲f̲e̲r̲e̲n̲c̲e̲s̲
Ref. PRT ̲DATA
4.2.1.6.11.4 P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲D̲e̲s̲i̲g̲n̲
Ref. Code
4.2.1.6.12 C̲A̲N̲C̲E̲L̲ ̲P̲R̲I̲N̲T̲Q̲ ̲R̲E̲C̲E̲I̲V̲E̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
4.2.1.6.12.1 F̲u̲n̲c̲t̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
If an INIT ̲RECEIVE ̲FIRST ̲QEL from PRIS ̲PRINTQ is pending
then it will be cancelled.
4.2.1.6.12.2 I̲n̲t̲e̲r̲f̲a̲c̲e̲
C̲a̲l̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲s̲
a) CANCEL ̲PRINTQ ̲RECEIVE
b) CANCEL ̲PRINTQ ̲RECEIVE(R6)
R̲e̲g̲i̲s̲t̲e̲r̲ ̲C̲o̲n̲v̲e̲n̲t̲i̲o̲n̲s̲
C̲a̲l̲l̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲
R6 LINK (DEST)
R̲e̲t̲u̲r̲n̲ ̲R̲e̲g̲i̲s̲t̲e̲r̲s̲
R0 - R7 DESTROYED
F̲a̲t̲a̲l̲ ̲E̲r̲r̲o̲r̲s̲
None
4.2.1.6.12.3 D̲a̲t̲a̲ ̲ ̲D̲a̲t̲a̲ ̲D̲e̲s̲c̲r̲i̲p̲t̲i̲o̲n̲s̲
D̲a̲t̲a̲ ̲R̲e̲f̲e̲r̲e̲n̲c̲e̲s̲
Ref. PNT ̲DATA
4.2.1.6.12.4 P̲r̲o̲c̲e̲d̲u̲r̲e̲ ̲D̲e̲s̲i̲g̲n̲
Ref Code
4.2.1.7 S̲u̲b̲p̲a̲c̲k̲a̲g̲e̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲s̲
4.2.1.7.1 U̲P̲C̲O̲ ̲P̲R̲O̲P̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲
Ref. sec. 4.1.7.3.2.1
4.2.1.7.2 P̲R̲O̲P̲ ̲U̲P̲C̲O̲ ̲I̲n̲t̲e̲r̲f̲a̲c̲e̲s̲
Ref. sec. 4.1.7.3.2.2
4.2.2 P̲r̲i̲n̲t̲e̲r̲ ̲O̲u̲t̲p̲u̲t̲ ̲S̲u̲b̲p̲a̲c̲k̲a̲g̲e̲
The P̲r̲inter O̲utp̲ut (PROP) coroutine is performing the
actions in connection with formattting and output of
the text to be printe.
PROP is controlled by the other coroutine (UPCO).
4.2.2.1 F̲u̲n̲c̲t̲i̲o̲n̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
The following functions are performed by this sub-package
(ref.fig.4.2.2-1):
UPCO Control Functions
Command Completion and Error Report functions
Forma Control
Printout…86…1 …02… …02… …02… …02… …02…
FIGURE 4.2.2-1…86…1 …02… …02… …02… …02… …02…
4.2.2.1.1 U̲P̲C̲O̲ ̲C̲o̲m̲m̲a̲n̲d̲ ̲E̲x̲e̲c̲u̲t̲i̲o̲n̲ ̲(̲1̲.̲0̲)̲
The UPCO Command Execution functions carry out execution
of the commands issued by UPCO.
a) Initialize (1.1)
The Initialize command isissued for initialisation
of PROP,s working area, i.e. variables and buffers.
A CC-Report is to be sent to UPCO, ref. sec. 4.2.2.1.2.c.
b) C̲o̲m̲m̲e̲n̲c̲e̲ ̲(̲1̲.̲2̲)̲
Upon receipt of a Commence-CMD, PROP will start
printing the current item.
c) Abandon 1.3)
The Abondon Print Command will cause the printing
actions to be stopped immediately. All outstanding
I/O requests will be canncelled and the working
area will be cleared.
Completion will be reported to UPCO, ref. sec.
4.2.2.1.2.c.
d) E̲P̲E̲A̲T̲ ̲(̲1̲.̲4̲)̲
The Repeat Command causes the printout of the current
item to be repeate
e) P̲r̲e̲e̲m̲p̲t̲ ̲(̲1̲.̲5̲)̲
Printout of the current item will be stopped.
Completion will be reported to UPCO, ref. sec.
4.2.2.1.2.c.
4.2.2.1.2. C̲o̲m̲m̲a̲n̲d̲ ̲C̲o̲m̲p̲l̲e̲t̲i̲o̲n̲ ̲a̲n̲d̲ ̲E̲r̲r̲o̲r̲ ̲R̲e̲p̲o̲r̲t̲ ̲F̲u̲n̲c̲t̲i̲o̲n̲s̲ ̲(̲2̲.̲0̲)̲
These functions handle the reception and sending of
completion and error report.
a) P̲r̲o̲c̲e̲s̲s̲i̲n̲g̲ ̲o̲f̲ ̲I̲O̲C̲ ̲C̲o̲m̲p̲l̲e̲t̲i̲o̲n̲ ̲o̲d̲e̲s̲ ̲(̲2̲.̲1̲)̲
When printout data is delivered to the Printer
Handler it will respond with a Completion Code.
The Completion Code will contain information about
possible printer errors. Two kinds of printer errors
can occur:
1) Paper Low
2) Conection Error.
b) S̲e̲n̲d̲ ̲E̲r̲r̲o̲r̲ ̲R̲e̲p̲o̲r̲t̲ ̲t̲o̲ ̲U̲P̲C̲O̲ ̲(̲2̲.̲2̲)̲
Upon detection of an I/O error, a report will be
sent to UPCO.
c) S̲e̲n̲d̲ ̲C̲o̲m̲m̲a̲n̲d̲ ̲C̲o̲m̲p̲l̲e̲t̲i̲o̲n̲ ̲R̲e̲p̲o̲r̲t̲ ̲t̲o̲ ̲U̲P̲C̲O̲ ̲(̲2̲.̲3̲)̲
Completion of some of the UPCO commands is to be
reported back, ref. sec. 4.2.
