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decus_20tap2_198111
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decus/20-0032/tapblk.mac
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TITLE TAPBLK PROGRAM TO BLOCK FILES FROM MTA.
; Modified by Paul T. Robinson, Wesleyan Univ.
; for DECUS conversion to DEC-20
I=0
O=1
AC=1
MLON
; EXTERN JOBFF,JOBREL
extern .jbff,.jbrel ;redefine jobdat symbols
LOC 124
XWD 0,ST
RELOC
ST: SETZ 0,
HRRZI 17,1
BLT 17,17 ;CLEAR ALL AC'S
RESET
MOVEI 0,13
TTCALL 3,MESS1 ;PARITY MESSAGE
TTCALL 11,
TTCALL 0,AC
CAIN AC,105
TRO 0, 1000 ;SET EVEN PARITY
TTCALL 3,MESS2
TTCALL 11,
TTCALL 0,AC
CAIN AC,62
TRO 0,200 ;SET 200 BPI
CAIN AC,65
TRO 0,400 ;SET 556 BPI
CAIN AC,70
TRO 0,600 ;SET 800 BPI
MOVEM 0,SPEC
OPEN I,SPEC ;INIT TO PAR. & DENSITY SPECIFIED
JRST ER1
INIT O,13 ;INIT TO SYSTEM STD,& 800 BPI
SIXBIT/OUT/ ;LOGICAL NAME OF OUT
XWD OUTB,0
JRST ER2
OUTBUF O,2 ;SET UP OUTPUT BUFFERS
INBUF I,1 ;SET UP 1 STD. INPUT BUFF
JSR XPND ;MOVE INPUT BUFF TO END OF CORE SPACE
NAM: TTCALL 3,MESS3
TTCALL 11,
TTCALL 0,AC
CAIN AC,62
JRST M
CAIN AC,63
JRST DONE
MTAPE I,101 ;IBM TAPES
M: MOVEI 0,5
MOVE 5,[POINT 3,3,20]
MOVE 6,[POINT 6,E,5]
ADDI 3,1 ;NEW FILE NUMBER
AA: ILDB AC,5
ADDI AC,20 ;CONVERT TO SIXBIT
IDPB AC,6
SOJG 0,AA
ENTER O,E
JRST ER3
GO: IN I, ;READ IN 1ST REC.
JRST COUNT-2
STATZ 40000 ;BLOCK TOO LG.?
JRST LARGE
STATZ 2000 ;PHYSICAL EOT?
JRST ER7
STATZ 20000 ;END OF FILE?
JRST EOF
STATZ 200000 ;DATA OR TAPE ERROR?
JRST ER5
STATZ 100000 ;BAD PARITY?
JRST ER6
STATZ 400000 ;UNIT WRT-LCKED?
JRST ER9
JRST ER10
MOVEI 4,1
HRREI 2,-2 ;SET EOF COUNTER
COUNT: SOSGE INB+2
JRST GO
ILDB AC,INB+1 ;GET A WORD
PUTNXT: SOSGE OUTB+2
JRST PUTBUF
IDPB AC,OUTB+1 ;PUT IT IN OUTPUT BUFF
JRST COUNT
PUTBUF: OUT O, ;OUTPUT TO DSK
JRST PUTNXT
JRST ER8
LARGE: MTAPE I,7 ;BACKSPACE 1 REC.
MTAPE I,0 ;WAIT
JUMPE 4,FRST
MTAPE I,7
MTAPE I,0
MTAPE I,6
MTAPE I,0
FRST: MOVE 0,.jbrel
ADDI 0,2000
CALLI 0,11 ;GET MORE CORE
JRST ER4
JSR XPND
JRST GO
XPND: 0
MOVE 0,.jbrel
SUB 0,.jbff
ADDM 0,.jbff ;UPDATE .jbff TO END OF CORE SPACE
MOVS 0,0
ADDM 0,@INB ;EXPAND INPUT BUFF
JRST @XPND
EOF: TTCALL 3,[ASCIZ/
EOF ON INPUT TAPE
/]
AOSGE 2
JRST .+2
TTCALL 3,[ASCIZ/
REACHED LOGICAL END OF TAPE (2 EOF'S TOGETHER)
/]
CLOSE I,
CLOSE O,
JRST NAM
ER1: TTCALL 3,[ASCIZ/
INIT FAILURE FOR INPUT DEVICE, TRY "AS MTA- INN", THEN TYPE "REENTER"
/]
JRST DONE
ER2: TTCALL 3,[ASCIZ/
INIT FAILURE FOR OUTPUT DEVICE DSK, TYPE "AS DSK OUT" THEN "REENTER" TO RESTART
/]
JRST DONE
ER3: TTCALL 3,[ASCIZ/
ENTER FAILURE FOR OUTPUT FILE ON DSK, TRY A "REENTER" TO RESTART
/]
JRST DONE
ER4: TTCALL 3,[ASCIZ/
ATTEMPT TO EXPAND CORE FAILED, TRY A "CORE"
COMMAND, AND THEN RENAME T000XX, SO YOU WILL
NOT LOSE THE FIRST PART OF IT, THEN
RESTART THE PROGRAM.
/]
JRST DONE
ER5: TTCALL 3,[ASCIZ/
DATA ERROR, TAPE BAD OR DEVICE HUNG, WILL TRY TO CONTINUE XMISSION.
/]
JRST COUNT-2
ER6: TTCALL 3,[ASCIZ/
BAD PARITY DETECTED, SUGGEST RESTARTING PROGRAM BUT
CHANGE RESPONSE TO 1ST OR 2ND QUESTION
/]
JRST DONE
ER7: TTCALL 3,[ASCIZ/
REACHED PHYSICAL END OF TAPE, REWINDING./]
MTAPE I,1
MTAPE I,0
TTCALL 3,[ASCIZ/
REWIND DONE. MOUNT NEXT TAPE, THEN TYPE
CARRIAGE RETURN TO CONTINUE, OR
TYPE 3 TO CLOSE FILES AND EXIT.
/]
TTCALL 11,
TTCALL 0,AC
CAIN AC,63
JRST DONE
JRST GO
ER8: TTCALL 3,[ASCIZ/
ERROR DURING BUFFERED OUTPUT, SUGGEST REWINDING TAPE AND RESTARTING
AT THE BEGINNING OF THE CURRENT FILE.
(RENAME ANY OTHER T000XX FILES FIRST)
/]
JRST DONE
ER9: TTCALL 3,[ASCIZ/
IS TAPE UNIT OK? START OVER.
/]
JRST DONE
ER10: TTCALL 3,[ASCIZ/
HELP!! UNIDENTIFIED INPUT ERROR, YOU SHOULD
NEVER REACH THIS MESSAGE. CHECK TAPE AND RESTART.
/]
DONE: RELEAS I,
RELEAS O,
EXIT
LIT
MESS1: ASCIZ/
TYPE "E" FOR EVEN PARITY ON INPUT TAPE.
(DEFAULT VALUE IS ODD)
/
MESS2: ASCIZ/
TYPE 2,5,OR 8 FOR 200,556,OR 800 BPI INPUT.
(DEFAULT VALUE IS THE SYSTEM STANDARD)
/
MESS3: ASCIZ/
TYPE 1 FOR 9 TRACK INDUSTRY STANDARD MODE.
(I.E. IBM TAPES)
TYPE 2 FOR DEC 7 OR 9 TRACK (NON-STANDARD), OR
TYPE 3 TO CLOSE FILES AND EXIT
(DEFAULT VALUE IS 1)
/
SPEC: 0
SIXBIT/INN/
XWD 0,INB
E: SIXBIT/T00000/
0
EXP<157>B8
0
INB: BLOCK 3
OUTB: BLOCK 3
END ST