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p680.pal
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/P680-----X680 SYSTEM V.0D DEC-3-70-----
/USE WITH M680.MAC VERSIONS 0A OR LATER
VERZUN=400 /VERSION NUMBER (LOC 137)
/R.KRASIN
/-----CONDIT.ASSEMBLY SWITCHES--------------------
IFNDEF FTSIM<FTSIM=0> /1: ...DA-10 SIMULATION
IFNDEF FTCKOV<FTCKOV=1> /1: ASSEMBLE CODE FOR CHECKING CLOCK-OVERRUN
/-----PARAMETERS--------------------
IFNDEF CONX<CONX=030> /'CONTROL-C' FOR X680 (030=^X)
IFNDEF SWIT0<SWIT0=0000> /SWITCH-BITS TO BE FORCED TO 0
IFNDEF SWIT1<SWIT1=0000> /SWITCH-BITS TO BE FORCED TO 1
IFNDEF OPLINE<OPLINE=CTYLIN> / OPERATOR LINE
IFNDEF HICORE<HICORE=7600> /'TOP OF CORE' FOR X680 TABLES
IFNDEF MONQL<MONQL=10> /LENGTH OF MONQ
IFNDEF MODQL<MODQL=20> /LENGTH OF MODQ
IFNDEF MAPQL<MAPQL=10> /LENGTH OF MAPQ
IFNDEF ERRQL<ERRQL=10> /LENGTH OF ERRQ
/-----CONSTANTS
CCIPOL=4400 /TO-10 CODE FOR 'ARE YOU THERE?'
CCICOF=4401 /... 'CARRIER OFF' (MUST = CCICON-1)
CCICON=4402 /... 'CARRIER ON'
CCIRNG=4403 /... 'RINGING'
CCINIT=4404 /... '680 RESTART'
/-----IOTS-------------------------------------
/-----CTY-----
CTISKP=6031 /SKIP IF INPUT (KEY-BOARD)
CTICLR=6032 /CLEAR IRP
CTRED=6034 /READ (OR) CTY INTO AC
CTOSKP=6041 /SKIP IF OUTPUT (PRINTER)
CTOCLR=6042 /CLEAR IRP
CTLOD=6044 /LOAD CTY BUFFER FROM AC
/-----DA-10-----
DAISKP=6371 /SKIP IF INPUT (FM10 FULL)
DARED1=6352 /READ (OR) BITS 0-11 INTO AC
DARED2=6362 /...12-23...
DARED3=6372 /...34-35..., CLEAR 8I IRP. (FM10 FULL), & IRP. PDP-10 (FM10 EMPTY)
DAOSKP=6361 /SKIP IF OUTPUT (TO10 EMPTY)
DAOCLR=6351 /CLEAR OUTPUT BUFFER AND IRP. (TO10 EMPTY)
DALOD1=6354 /LOAD (OR) BITS 0-11 FROM AC
DALOD2=6364 /...12-23...
DALOD3=6374 /...24-35..., & IRP. PDP-10 (TO10 FULL)
/-----DC08A-----
TTI=6402 /SCAN INPUT
TTO=6404 /SCAN OUTPUT
LSRINC=6401 /INCREMENT LSR (LINE SELECT REGISTER)
LSRCLR=6411 /CLEAR LSR
LSRLOD=6412 /LOAD (OR) LSR FROM AC(5-11)
LSRRED=6414 /READ (OR) LSR INTO AC(5-11)
LCCINC=6461 /INCREMENT LCC (LOADING CONTROL RCOUNTER
LCCCLR=6471 /CLEAR LCC
LCCLOD=6472 /LOAD (OR) LCC FROM AC(7-11)
LCCRED=6464 /READ (OR) LCC INTO AC(7-11)
CK1SKP=6421 /SKIP IF CLOCK-1
CK1OFF=6422 /CLEAR IRP. & TURN CLOCK-1 OFF
CK1ON=6424 /...ON
CK2SKP=6431 /CLOCK-2
CK2OFF=6432
CK2ON=6434
CK3SKP=6441 /CLOCK-3
CK3OFF=6442
CK3ON=6444
CK4SKP=6451 /CLOCK-4
CK4OFF=6452
CK4ON=6454
/-----MISC.
PTPSKP=6021 /SKIP IF IH.SPEED PAPER TAPE PUNCH
PTPCLR=6022 /CLEAR IRP. FOR HI.SPEED PAPER TAPE PUNCH
PTRSKP=6011 /SKIP IF HI.SPEED PAPER TAPE READER
PTRRED=6012 /CLEAR IRP. & READ HI.SPEED PAPER TAPE READER
PARNOP=6101 /DONT SKIP IF MEM.PARITY ERROR
PARCLR=6104 /CLEAR IRP.
POWSKP=6102 /SKIP IF PLUG PULLED
IFZERO FT689< /-----DC08F-----
MODCLR=6712 /CLEAR INTERRUPT ENABLE (PREVENT DC08F IRPS.)
MODLOD=6704 /LOAD...(ALLOW...)
RNGSKP=6701 /SKIP IF RING FLAG
RNGCLR=6734 /CLEAR IRP., INC. AND RESTART RING-SCANNER
RNGRED=6702 /READ (OR?) RING-SCANNER INTO AC(5-11)
CARSKP=6711 /SKIP IF CARRIER FLAG
CARCLR=6724 /CLEAR IRP., INC. AND RESTART CARRIER-SCANNER
CARRED=6714 /READ (OR?) CARRIER-SCANNER INTO AC(5-119
DTRCLR=6721 /CLEAR DATA-TERM.-READY FOR SELECTED LINE (AC(5-11))
DTRLOD=6731 /LOAD (SET)...
RTSCLR=6722 /CLEAR REQ.-TO-SEND FOR SELECTED LINE (AC(5-11))
RTSLOD=6732 /LOAD (SET)...
> /IFZERO FT689
IFNZRO FT689< /-----689AG-----
MODCLR=6714 /CLEAR INTERRUPT ENABLE (PREVENT 689AG IRPS.)
MODLOD=6704 /LOAD...(ALLOW...)
GRPCLR=6721 /CLEAR GROUP COUNTER
GRPINC=6731 /INCREMENT...
RNGSKP=6701 /SKIP IF RING
RNGCLR=6742 /CLEAR IRP.
RNGRED=6702 /READ (OR) THIS GROUP'S RING BITS INTO AC
CARSKP=6711 /SKIP IF CARRIER
CARCLR=6741 /CLEAR IRP.
CARRED=6712 /READ (OR) THIS GROUP'S CARRIER BITS INTO AC
DTRCLR=6724 /CLEAR DATA-TERM.-READY FOR THIS GROUP IF AC-BIT=1
DTRLOD=6722 /LOAD (SET)...
RTSCLR=6734 /CLEAR REQ.-TO-SEND FOR THIS GROUP IF AC-BIT=1
RTSLOD=6732 /LOAD (SET)...
> /IFNZRO FT689
/-----OP-CODES & MACROS-----
FIXMRI INC=2000
DEFINE CALL NAME<
JMS I [NAME]>
SKPE= SZA
SKPNE= SNA
SKPL= SMA
SKPLE= SMA SZA
SKPG= SPA SNA
SKPGE= SPA
LAC1= CLA IAC
LAC2= CLA CLL IAC RAL
LAC3= CLA STL IAC RAL
LAC4= CLA CLL IAC RTL
LAC6= CLA STL IAC RTL
LACM1= STA
LACM2= STA CLL RAL
LACM3= STA CLL RTL
/-----I-ROUTINE MACROS-----
DEFINE IROT XXX NEXXXX
< XLIST
/XXX I-ROUTINE NAME (ENTRY ADDRESS)
/NEXXXX JUMP ADDRESS OF NEXT ROUTINE
NEXXXX= PSNEXT
PSNEXT= XXX
XLIST>
/-----N-ROUTINE MACROS-----
DEFINE NLEVEL FSTROT
< XLIST
/FSTROT--HIGHEST PRIORITY N-ROUTINE OF THIS LEVEL
/NLEVEL MACROS MUST BE LISTED IN ORDER OF DECREASING PRIORITY
/NROT MACROS MUST FOLLOW EACH NLEVEL MACRO IN ORDER OF INCREASING PRIORITY
LEVNUM= LEVNUM+1 /COUNT NO. OF LEVELS
PSEXIT= JMP I [FSTROT]
LEVPC= .
LEVLEN= .
PSREQ= DCA I [.]
JMP .+21 /MODIFIED TO 0 IF THIS LEVEL NOT IDLE
TAD .+10 /GET SAVED PC
SKPNE /0?
JMP .+10 /YES--ENTER 1ST ROUTINE
DCA PSPC /NO---RESUME WHERE INTERRUPTED
TAD .+3 /GET SAVED AC
JMS PSAVE /SETUP PSAVE
. /THIS ADDRESS
0 /AC SAVE FOR THIS LEVEL
PSIRP= JMS I [.]
LEVPC= .-LEVPC /DISPLACEMENT OF PC-SAVE FROM BEG. OF NLEVEL MACRO
0 /PC SAVE FOR THIS LEVEL
JMP PSCAN /USED ON PROG. IRP. (IRPXXX)
TAD .-4 /SETUP PSAVE
DCA PSAVE
PSEXIT
PSNEXT= .
TAD (JMP .+3)/HERE TO EXIT FROM LEVEL
DCA .-17 /SET LEVEL IDLE
DCA .-7
LEVLEN= .-LEVLEN /LENGTH OF NLEVEL MACRO
XLIST
>
DEFINE NROT XXX NEXXXX XITXXX IRPXXX REQXXX
< XLIST
/XXX N-ROUTINE NAME (ENTRY ADDRESS)
/NEXXXX JUMP ADDRESS FOR NEXT ROUTINE (PRIORITY CHAINING)
/XITXXX THE EXIT OP-CODE
/IRPXXX THE PSUDO-INTERRUPT OP-CODE
/REQXXX THE REQUEST-TO-SCHEDULE OP-CODE
NEXXXX= PSNEXT
PSNEXT= XXX
XITXXX= PSEXIT
IRPXXX= PSIRP
REQXXX= PSREQ
XLIST
>
/-----QUEUE MACROS-----
DEFINE QHEAD XXXQA XXXQL
< XXXQA /QUEUE ADDRESS
XLIST
-XXXQL /QUEUE LENGTH
XXXQA /PUT POINTER
-XXXQL /PUT RECYCLE COUNTER
XXXQA /GET POINTER
-1 /GET RECYCLE COUNTER
-XXXQL-1 /INPUT FREE COUNTER
XLIST
>
DEFINE GET XXXQ
/AC MUST = 0
< XLIST
ISZ XXXQ+5
JMP .+5
TAD XXXQ+0 /RECYCLE
DCA XXXQ+4
TAD XXXQ+1
DCA XXXQ+5
LACM1
TAD XXXQ+6
DCA XXXQ+6
TAD I XXXQ+4
INC XXXQ+4
XLIST
>
DEFINE PUT XXXQ XXXFUL
/AC RETURNED 0
< XLIST
ISZ XXXQ+6
JMP .+4
JMS I [QOFLOW]
DCA XXXQ+6
JMP XXXFUL /QUEUE OVERFLOW
DCA I XXXQ+2
INC XXXQ+2
ISZ XXXQ+3
JMP .+5
TAD XXXQ+0 /RECYCLE
DCA XXXQ+2
TAD XXXQ+1
DCA XXXQ+3
XLIST
>
DEFINE GET1 XXXQ
/AC MUST = 0
< XLIST
ISZ XXXQ+5
JMP .+5
TAD XXXQ+0 /RECYCLE
DCA XXXQ+4
TAD XXXQ+1
DCA XXXQ+5
TAD I XXXQ+4
INC XXXQ+4
XLIST
>
DEFINE GET2 XXXQ
/AC NEED NOT = 0
< XLIST
LACM1
TAD XXXQ+6
DCA XXXQ+6
TAD I XXXQ+4
INC XXXQ+4
XLIST
>
DEFINE PUT1 XXXQ XXXFUL
/AC RETURNED 0
< XLIST
ISZ XXXQ+6
JMP .+4
JMS I [QOFLOW]
DCA XXXQ+6
JMP XXXFUL /QUEUE OVERFLOW
DCA I XXXQ+2
INC XXXQ+2
XLIST
>
DEFINE PUT2 XXXQ
/AC RETURNED 0
< XLIST
DCA I XXXQ+2
INC XXXQ+2
ISZ XXXQ+3
JMP .+5
TAD XXXQ+0 /RECYCLE
DCA XXXQ+2
TAD XXXQ+1
DCA XXXQ+3
XLIST
>
DEFINE SKPQE XXXQ
/SKIP IF QUEUE EMPTY
/AC MUST = 0
/AC RETURNED 0
< XLIST
TAD XXXQ+6
CMA
TAD XXXQ+1
SKPE CLA
XLIST
>
DEFINE SKPQNE XXXQ
/SKIP IF QUEUE NOT EMPTY
/AC MUST = 0
/AC RETURNED 0
< XLIST
TAD XXXQ+6
CMA
TAD XXXQ+1
SKPNE CLA
XLIST
>
DEFINE SKPQNF XXXQ
/SKIP IF QUEUE NOT FULL
/RETURN AC=0
< XLIST
LAC1
TAD XXXQ+6
SKPL CLA
XLIST
>
/-----PAGE ZERO CODE
*0 /-----INTERRUPT SERVICE
0
DCA I PSAVE /MODIFIED BY THE ILEVEL MACRO
TAD 0
IRPJ1, DCA I PSAVE
IRPJ2, JMP I [CLK]
*5
START /USED FOR RESTART
*10 /-----AUTO INDEX REGISTERS
AX0, 0 /GENERAL PURPOSE (IOF)
AX1, 0 /QFLUSH
AX2, 0 /QFLUSH
AX3, 0
AX4, 0
AX5, 0
AX6, 0
/AX7, 0 /USED BY NLEVEL MACRO
*17 /-----N-ROUTINE SERVICE
PSAVE, 0 /PTR. TO AC & PC SAVE AREA (SET WITH A JMS)
ION
JMP I PSPC
PSPC, 0
/-----MORE INTERRUPT SERVICE
IRPNOT, ISZ BADIRP /HERE IF CANT FIND IRP
JMP PSCAN0
HLTIRP, HLT /4096 MYSTERIOUS IRPS
JMP PSCAN0
/-----CLOCK DISPATCH
CK0ION, CK01
IFNZRO CNUM-1<
CK1ION, CK11
JMP CKION
IFNZRO CNUM-2<
CK2ION, CK21
JMP CKION
IFNZRO CNUM-3<
CK3ION, CK31
JMP CKION
>>> /IFNZRO CNUM-1 ... CNUM-3
/-----PAGE ZERO VARIABLES
ZCORE=. /-----CORE TO BE CLEARED ON START
PDP10F, 0 /USED FOR TESTING PDP-10 PRESENCE
PDP10D, 0 /1 IF PDP-10 THOUGHT DOWN
PDP10I, 0 /-1: INHIBIT/IGNORE PDP-10 INTERRUPTS
DAOBZ, 0 /DA-10 OUTPUT BUSY FLAG
CTOBZ, 0 /CTY OUTPUT BUSY FLAG
CTOBUF, 0 /CTY OUTPUT BUFFER
MONACK, 0 /SET 1 TO ACK MON
ZCORK=.-ZCORE /-----END OF START CLEAR
CHARAC, 0 /CHARACTER ON SUBROUTINE CALLS
TTCHAR, 0 /...
LINUMB, 0 /LINE NUMBER...
MAPL, 0 /STUFF FOR MAP
MAPC, 0 /...
MAPT, 0 /...
IFNZRO FTMOD<
MODL, 0 /STUFF FOR MOD
MODC, 0 /...
MODMLT, 0 /...
MODFLG, 0 /1: DISABLE MODEM CONTROL
IFNZRO FT689<
M689M, 0
> /IFNZRO FT689
> /IFNZRO FTMOD
MONSLF, 0 /STUFF FOR MON
MONLOC, 0 /...
MONNUM, 0 /...
MONNUF, 0 /...
MONTEM, 0 /...
OPRLIN, -1 /OPERATOR LINE NUM. (-1 IF NONE)
SPYLIN, -1 /CURRENT 'TALK' OR 'SPY' LINE NUM. (-1 IF NONE)
SPYACK, 0 /COUNT ACK'S FOR SPY LINE
SWITCH, 0 /CONSOLE SWITCHES
TEMP, 0 /GLOBAL TEMPORARY
TEMP1, 0 /...
TIKTIK, -BAUD /COUNT TICKS
NULDIS, 0 /FOR NULL DISPLAY
NULCTR, -310 /...
DAOPUJ, DAOPUT /JMS ADDRESSES FOR DA-10 ROUTINES
DAOQUJ, DAOQUE / MODIFIED TO NILROT WHEN
DAOUTJ, DAOUT / PDP10I=-1
*100 /-----FIXED LOCATIONS
DAY, 0 /(100)--OCTAL DAY
TIME, 0 /(101)--LH=OCTAL HOUR, RH=OCTAL MIN.
BADIRP, 0 /(102)--NUMBER OF UNIDENTIFIED INTERRUPTS
BADQUE, 0 /(103)--NUMBER OF QUEUE OVERFLOWS
0 /(104)--UNUSED
CK1OVR, 0 /(105)--NUMBER OF TIMES OVERAN CLOCK-1 INTERRUPT
CK2OVR, 0 /(106)--...CLOCK-2...
CK3OVR, 0 /(107)--...CLOCK-3...
CK4OVR, 0 /(110)--...CLOCK-4...
*137 /(137)-----VERSION NUMBER
VERZUN
IFNZRO FTSIM<
SIMAD1, 0 /STUFF FOR SIMCK
SIMAD2, NUMLIN-1
SIMFLG, -1
> /IFNZRO FTSIM
/-----STARTING ADDRESSES
*200
START, IOF /200-217 ALL VALID STARTING ADDRESSES
IOF
IOF
IOF
IOF
IOF
IOF
IOF
IOF
IOF
IOF
IOF
IOF
IOF
IOF
IOF
IOF /ONE EXTRA SINCE 8/I RESTARTS WITH LOAD ADDR.,EXAMINE,CONT.
CLA
TAD (-ZCORK)/CLEAR SOME CORE
DCA TEMP
TAD (ZCORE-1)
DCA AX0
START1, DCA I AX0
ISZ TEMP
JMP START1
CALL QFLUSH /FLUSH ALL QUEUES
DAOQ
CALL QFLUSH
MAPQ
CALL QFLUSH
ERRQ
JMP CLKINI /INIT THE CLOCKS
CLKINX, /RETURN FROM CLKINI
IFNZRO FTMOD<
JMS MODINI /INIT THE MODEMS
> /IFNZRO FTMOD
IFZERO FTMOD<
MODCLR /IF NO MODEM CONTROL, DISABLE IRPS
> /IFZERO FTMOD
LACM1 /READ & OBEY SWITCHES
JMS SWICH
IFNZRO FTSIM <
LACM1
DCA SIMFLG
> /IFNZRO FTSIM
DCA PSCAN /INIT ALL N-LEVELS
DCA PSCAN+LEVPC
DCA PSCAN+LEVLEN
DCA PSCAN+LEVLEN+LEVPC
TAD (CCINIT)/TELL THE PDP-10 WEVE RESTARTED
DCA CHARAC
JMS I DAOPUJ
JMP PSCAN0
/-----I-LEVEL PRIORITY AND LINKAGE-----
IRPXIT, CLA /HERE ON EXIT FROM I-ROUTINE
TAD IRPJ2 /TAKE ANY WAITING IRPS
ION
DCA 1
IOF
PSCAN0, TAD IRPJ1
DCA 1
XITIRP= JMP I [IRPXIT]
PSNEXT= IRPNOT
LEVNUM= 0
/IROT MACROS MUST FOLLOW IN ORDER OF INCREASING PRIORITY
IROT UNS,NEXUNS/UNSUPPORTED & SPECIAL HARDWARE
IFNZRO FTMOD<
IROT DSC,NEXDSC/DATA-SET CONTROL
> /IFNZRO FTMOD
IROT CTY,NEXCTY/CONSOLE TTY
IROT DAI,NEXDAI/DA-10 INPUT (FROM-10)
IROT DAO,NEXDAO/DA-10 OUTPUT (TO-10)
IROT CLK,NEXCLK/THE CLOCKS
PSCAN, /N-ROUTINE SERVICE BEGINS HERE
/NLEVEL MACROS MUST FOLLOW
/-----N-LEVEL PRIORITY AND LINKAGE-----
/-----LEVEL-1
IFZERO FTSIM <
NLEVEL MAP
NROT MAP,NEXMAP,XITMAP,IRPMAP,REQMAP
> /FTZERO FTSIM
IFNZRO FTSIM <
NLEVEL SIM
NROT MAP,NEXMAP,XITMAP,IRPMAP,REQMAP
NROT SIM,NEXSIM,XITSIM,IRPSIM,REQSIM
> /IFNZRO FTSIM
NLEVEL MON /-----LEVEL-2
NROT TIK,NEXTIK,XITTIK,IRPTIK,REQTIK
IFNZRO FTMOD<
NROT MOD,NEXMOD,XITMOD,IRPMOD,REQMOD
> /IFNZRO FTMOD
NROT MON,NEXMON,XITMON,IRPMON,REQMON
/NULL JOB
/--------
/ MUST IMMEDIATELY FOLLOW LAST NROT MACRO
NULJB0, TAD NULJPC
NULJB1, DCA PSPC
TAD NULJAC
JMS PSAVE
NULJSA, NULJOB /NULL JOB SA
NULJAC, 0 /NULL JOB AC
NULJPC, NULJOB /NULL JOB PC
NULJOB, ISZ NULK /COMPUTE NULL DISPLAY
JMP NULJOB
IOF /HERE EVERY MILLISECOND OF NULL TIME
CLA
TAD (-336)
DCA NULK
ISZ NULCTR
JMP NULJO2
TAD NULDIS /HERE EVERY 20 MILLISECONDS OF NULL TIME
STL RAL
DCA NULDIS
TAD (-24)
DCA NULCTR
NULJO2, TAD NULJAC
ION
JMP NULJOB
NULK, -336
/NILL ROUTINE
/------------
NILROT, 0
CLA
JMP I NILROT
PAGE
/-----DA-10 OUTPUT INTERRUPT SERVICE
IFZERO FTSIM <
DAO, DAOSKP /OUR INTERRUPT?
JMP NEXDAO /NO
DAOCLR /YES-CLEAR IRP. AND BUFFER
DCA PDP10F /THE PDP-10 IS STILL THERE!
DCA DAOBZ /CLEAR BUSY FLAG
JMS I DAOUTJ
XITIRP
/-----SUBROUTINE TO OUTPUT NEXT THING IN QUEUE IF ANY
DAOUT, 0
SKPQNE DAOQ /ANYTHING IN THE QUEUE?
JMP I DAOUT /NO--EXIT
DAOCLR /YES-OUTPUT IT
GET1 DAOQ
DALOD2
GET2 DAOQ
DALOD3
CLA
INC DAOBZ /SET BUSY FLAG
JMP I DAOUT / AND EXIT
> /IFZERO FTSIM
IFNZRO FTSIM <
DAO, DAOSKP
JMP NEXDAO
DAOCLR
XITIRP
DAOUT, 0
SKPQNE DAOQ
JMP I DAOUT
GET1 DAOQ
DCA LINUMB /LINE NUM.
GET2 DAOQ
DCA CHARAC / AND CHARACTER
CALL PDP10 /CALL PDP-10 SIMULATOR
JMP I DAOUT
> /IFNZRO FTSIM
/-----SUBROUTINE TO OUTPUT (OR QUEUE) TO THE DA-10
/
/ CHARAC=CHARACTER
/ LINUMB=LINE NUMBER
IFZERO FTSIM <
DAOPUT, 0
TAD DAOBZ /IS DA-10 BUSY?
SKPNE CLA
JMP DAOPU1 /NO
TAD LINUMB /YES-QUEUE IT
JMS I DAOQUJ
JMP I DAOPUT
DAOPU1, DAOCLR /CLEAR BUFFER
TAD LINUMB / OUTPUT IT
DALOD2
CLA
TAD CHARAC
DALOD3
CLA
INC DAOBZ / AND SET BUSY FLAG
JMP I DAOPUT
> /IFZERO FTSIM
IFNZRO FTSIM <
DAOPUT, 0
TAD DAOBZ /BUSY? (I.E. IS SIM RUNNING?)
SKPNE CLA
JMP DAOPU1 /NO
TAD LINUMB /YES-QUEUE IT
JMS I DAOQUJ
JMP I DAOPUT
DAOPU1, CALL PDP10 /MAKE LIKE A PDP-10
JMP I DAOPUT
> /IFNZRO FTSIM
/-----SUBROUTINE TO QUEUE FOR THE DA-10
/ CALLED FROM TTIX & TTOX SO MUST BE FAST
/
/ CHARAC=CHARACTER
/ AC=LINE NUMBER
DAOQUE, 0
PUT1 DAOQ,DAOQUF
TAD CHARAC
PUT2 DAOQ
DAOQUF, JMP I DAOQUE
DAOQ, QHEAD DAOQA,DAOQL /QUEUE HEADER
/-----DA-10 INPUT INTERRUPT SERVICE
IFZERO FTSIM <
DAI, DAISKP /FOR US?
JMP NEXDAI /NO
DCA PDP10F /RESET QUERY FLAG
TAD PDP10I /LISTENING TO THE 10?
SKPNE CLA
JMP DAI2 /YES
DARED3 /NO--JUST CLEAR THE IRP
CLA
XITIRP
DAI2, DARED2 /GET LINE NUM.
DCA LINUMB
DARED3 /GET CHAR. AND CLEAR IRP.
SKPGE /MODEM CONTROL?
JMP DAI6 /YES
DCA TTCHAR /NO--SAVE CHAR.
TAD LINUMB
TAD [LPTABB]
DCA TEMP
TAD I TEMP /GET LPTAB ENTRY
SKPGE /SPECIAL PROCESSING?
JMP DAI3 /YES
CALL TTOPUT /NO--TRANSFER TO ONE OF THE TTO BUFFERS
XITIRP
DAI3, CLA /CALL MAP FOR OUTPUT
TAD TTCHAR
DCA CHARAC
TAD LINUMB
CMA
CALL MAPPUT
XITIRP
DAI6,
IFNZRO FTMOD<
CALL MODPUT
XITIRP
> /IFNZRO FTMOD
IFZERO FTMOD<
CLA
XITIRP
> /IFZERO FTMOD
> /IFZERO FTSIM
IFNZRO FTSIM <
DAI, DAISKP
JMP NEXDAI
DARED3
CLA
XITIRP
> /IFNZRO FTSIM
PAGE
/-----SUBROUTINE TO DO SOMETHING WITH SOMETHING GOING TO THE PDP-10
/ CHARAC=CHARACTER
/ LINUMB=LINE NUM.
IFNZRO FTSIM <
PDP10, 0
LAC1 /SET BUSY FLAG
DCA DAOBZ
REQSIM /AND REQUEST SIM
TAD CHARAC /IS IT MODEM CONTROL?
SKPGE CLA
JMP I PDP10 /YES--IGNORE
TAD LINUMB /GET LINE NUM.
TAD [LINTAB]
DCA TEMP
TAD I TEMP /LOOK AT BITS 0-1
RAL
SZL
JMP PDP103
SKPL CLA
JMP I PDP10 /(0)-IGNORE
PDP100, TAD (052) /(1)-SUSTAINED OUTPUT
PDP101, AND [177]
DCA TTCHAR
TAD LINUMB / ADDRESS LPTAB
TAD [LPTABB]
DCA TEMP
TAD I TEMP / TO THE SCANNER OR MAP?
SKPGE
JMP PDP102 / MAP
CALL TTOPUT / SCANNER
JMP I PDP10
PDP102, CLA
TAD TTCHAR
DCA CHARAC
TAD LINUMB
CMA
CALL MAPPUT
JMP I PDP10
PDP103, RAL /SAVE SIGN IN LINK
CLA /IS IT AN ACK?
TAD CHARAC
SKPNE
JMP I PDP10 /YES-IGNORE IT
SNL /NO--WHAT CODE?
JMP PDP101 /(2)-ECHO INPUT
CLA /(3)-SUSTAINED INPUT & ECHO
TAD TEMP
TAD (SIMTAB-LINTAB)/ADDRESS SIMTAB
DCA TEMP
TAD I TEMP
SKPNE
JMP I PDP10 /ITS 0 SO IGNORE IT
DCA TEMP
TAD I TEMP /ZAP THE TTI INSTRUCTION
AND (1770)
TAD (4000)
DCA I TEMP
INC TEMP
TAD I TEMP
CLL RAR
DCA I TEMP
JMP PDP100 /AND ECHO SOMETHING OUT
/-----ROUTINE TO KEEP PDP10 GOING ONCE ITS STARTED
SIM, TAD DAOBZ /BUSY FLSG?
SKPNE CLA
JMP NEXSIM /NO--NOT FOR US
SIM0, ION /YES-CALL DAOUT LIKE DA-10 IRP WOULD
CLA
IOF
DCA DAOBZ
JMS I DAOUTJ
ION
NOP
IOF
TAD DAOBZ /MORE?
SKPE CLA
JMP SIM0 /YES
XITSIM /NO
> /IFNZRO FTSIM
PAGE
/-----CONSOLE TTY INTERRUPT SERVICE
CTY, CTOSKP /PRINTER?
JMP CTI /NO
CTOCLR /YES-CLEAR IRP.
DCA CTOBZ / AND BUSY FLAG
JMS CTYOUT /OUTPUT BUFFER IF NECESSARY
XITIRP
CTI, CTISKP /KEYBOARD?
JMP NEXCTY /NO
CTICLR CTRED /YES-CLEAR IRP. & READ IT
DCA CHARAC
TAD (CTYLIN)
CALL MAPPUT
XITIRP
/-----SUBROUTINE TO OUTPUT CHAR ON CTY
/
/ TAD CHARACTER
/ CALL CTYPUT
/ ... /RETURN AC=0
CTYPUT, 0
DCA CTOBUF /STORE IN BUFFER
TAD CTOBZ /BUSY?
SKPNE CLA
JMS CTYOUT /NO--OUTPUT IT
JMP I CTYPUT
CTYOUT, 0 /-----TYPE AND ACK. CHAR. IN BUFFER (IF ANY)
TAD CTOBUF /ANYTHING IN BUFFER?
SKPNE
JMP I CTYOUT /NO
CTLOD /YES-OUTPUT IT
CLA
DCA CHARAC
TAD (CTYLIN)/ AND ACKNOWLEDGE
CALL MAPPUT
DCA CTOBUF /CLEAR BUFFER
INC CTOBZ / AND SET BUSY
JMP I CTYOUT
/-----TTI SERVICE
TTIX, 0
DCA CHARAC /SAVE RAW CHARACTER
TAD (-4) /ADDRESS LSW
TAD TTIX
DCA AX0 / WITH AUTO-INDEX
LSRRED /RESET LSW WITH PORT NUM.
CLL RAL
RTL
DCA I AX0
LSRRED /ADDRESS PLTAB
TAD [PLTABB]
DCA TTITA
TAD I TTITA /DISPATCH ACCORDING TO CHAR.FORMAT--PLTAB(1-2)
RTL
SZL
JMP TTI4 /(2) & (3)
TTI00, /-----(0) & (1) HERE FOR 11-BIT AND 10-BIT CODE
CLA STL RTR /INIT CAW WITH 2000
DCA I AX0
TAD CHARAC /GET CHAR
RAR
TTI001, RTR
AND (777) /LEAVE STOP BIT FOR 'RECEIVE' FLAG
DCA CHARAC
SZL /WAS THERE A START BIT?
JMP TTIXIT /NO--MUST HAVE BEEN NOISE
TAD I TTITA /YES-GET PLTAB ENTRY
SKPGE /SPECIAL MAPPING?
JMP TTI3 /YES
AND [177] /NO--SEND IT TO THE DA-10
JMS I DAOQUJ
TTIXIT, LCCINC /BUMP LOAD CONTROL CTR.
JMP I TTIX
TTI3, AND [377] /QUEUE FOR MAP ROUTINE
CALL MAPPUT
JMP TTIXIT
TTI4, SKPGE CLA
JMP TTI03
TAD (1000) /(2)--CAW=1000
DCA I AX0
TAD CHARAC
STL RTR /STL FOR 'REC' FLAG
JMP TTI001
TTI03, TAD (200) /CAW
DCA I AX0
TAD CHARAC
STL RTR
STL RTR /STL FOR 'REC' FLG
JMP TTI001
TTITA, 0
/HERE ON QUEUE OVERFLOW
QOFLOW, 0
CLA
TAD QOFLOW /PRINT ADDRESS OF PUT MACRO
CALL ERRPUT
0000 /THE CODE FOR QUEUE-OVERFLOW
INC BADQUE /BUMP THE COUNTER
NOP
LACM1
JMP I QOFLOW
PAGE
/-----TTO SERVICE
TTOX, 0
DCA TTOK /SET 'LOAD CONTROL CTR.'
TAD I TTOX /GET TTO TABLE ADDRESS
DCA TTOAX
DCA CHARAC /0 CHARACTER FOR ACK CALLS TO DAOQUE
JMP TTO0
TTO00, LACM1
DCA TTOK
TTO0, TAD I TTOAX /GET A PORT NUMBER
SKPGE /NEGATIVE?
JMP TTO3 /YES-FINISHED
LSRCLR LSRLOD /NO--SET LINE SEL.REG.
TAD (TTOSHB)/ AND ADDRESS THIS PORT'S SHIFT WORD
DCA TTOSA
TAD I TTOSA /CHAR. IN PROGRESS?
SKPNE
JMP TTO0 /NO--CHECK NEXT PORT
TTO1, TTO /YES-PUSH ANOTHER BIT OUT
SKPNE /LAST BIT?
JMP TTO4 /YES
TTO2, DCA I TTOSA /NO--SAVE REMAINING BITS
JMP TTO0 /AND LOOK AT NEXT PORT
TTO3, DCA I TTOX /STORE NEXT TABLE ADDRESS BACK AT JMS
INC TTOX / AND RETURN
JMP I TTOX
TTO4, ISZ TTOK /CHECK LOAD-CONTROL CTR
SKP
JMP TTO00 /DONT FINISH ANY MORE CHAR.'S THIS TICK
TAD TTOSA /ADDRESS TTOBUF
TAD (TTOBUF-TTOSHF)
DCA TTOBA
TAD I TTOBA /BUFFERED CHAR.?
SKPNE
JMP TTO2 /NO
TTO5, DCA I TTOSA /YES-MOVE IT TO TTOSHF
DCA I TTOBA / AND CLEAR TTOBUF
LSRRED /ADDRESS PLTAB
TAD [PLTABB]
DCA TTOPL
TAD I TTOPL /GET LINE NUMBER
SKPGE /SPECIAL MAPPING?
JMP TTO6 /YES
AND [177] /NO--ACK DIRECTLY TO THE DA-10
JMS I DAOQUJ
JMP TTO0
TTO6, AND [377] /LET MAP ROUTINE HANDLE THIS ACK
CALL MAPPUT
JMP TTO0
TTOAX=AX0
TTOSA, 0
TTOBA, 0
TTOPL, 0
TTOK, 0
/-----SUBROUTINE TO PUT CHARACTER IN RIGHT TTO BUFFER
/ CALLED BY DAI SO MUST BE REASONABLY FAST
/
/TTCHAR=CHARACTER
/LINUMB=LINE NUMBER
/AC=LPTAB ENTRY (OR PORT NUM.)
TTOPUT, 0
AND [177] /ADDRESS PLTAB
TAD [PLTABB]
DCA TTOPUP
TAD TTOPUP /ADDRESS TTOSHF
TAD (TTOSHF-PLTAB)
DCA TTOPUB
TAD I TTOPUB /IS TTOSHF EMPTY?
SKPNE CLA
JMP TTOPU0 /YES
TAD TTOPUB /NO--ADDRESS TTOBUF
TAD (TTOBUF-TTOSHF)
DCA TTOPUB
JMP TTOPU2
TTOPU0, DCA CHARAC /ACK THIS LINE
TAD I TTOPUP /SPECIAL MAPPING?
SKPGE CLA
JMP TTOPU1 /YES-LET MAP DO IT
JMS I DAOPUJ /NO--GIVE TO DAO
JMP TTOPU2
TTOPU1, TAD LINUMB
CALL MAPPUT
TTOPU2, TAD I TTOPUP /GET PLTAB ENTRY
RTL / AND DISPATCH ON CHAR. FORMAT (BITS 1-2)
SZL
JMP TTOP3 /(2) & (3)
SKPL CLA
TAD (1400-400)/(0)--11 BIT CODE (2 STOP BITS)
TAD (400) /(1)--10 BIT CODE (1 STOP BIT)
TTOP1, TAD TTCHAR
CLL RAL /ADD START BIT
DCA I TTOPUB
JMP I TTOPUT
TTOP3, SKPGE CLA
TAD (140-200)/(3)--8 BIT CODE (BAUDOT?)
TAD (200) /(2)---9 BIT CODE (2741?)
JMP TTOP1
TTOPUB, 0
TTOPUP, 0
/-----UNSUPPORTED HARDWARE INTERRUPTS
UNS, PARNOP
SKP
JMP NEXUNS
PARCLR
HLT
XITIRP
PAGE
/-----SUBROUTINE TO QUEUE SOMETHING FOR MAP
/ CALLED BY TTIX & TTOX SO MUST BE FAST
/
/CHARAC=CHARACTER
/AC=LINE NUMBER
MAPPUT, 0
PUT1 MAPQ,MAPPUF
TAD CHARAC
PUT2 MAPQ
MAPPUF, REQMAP
JMP I MAPPUT
MAPQ, QHEAD MAPQA,MAPQL /THE QUEUE HEADER
/-----THE MAP ROUTINE
/
/IF LINE NUM. IS NEGATIVE(1'S COMP.): CHAR. IS FOR OUTPUT (TO THE TERMINALS)
/IF LINE NUM. IS POSITIVE THEN:
/ IF CHARACTER NOT 0: CHAR. IS FOR INPUT (FROM THE TERMINALS)
/ IF CHARACTER =0: IT IS AN OUTPUT ACKNOWLEDGMENT
/IF ABS(LINE NUM.) .GE. 200 ITS IGNORED (NULL LINE)
MAP, SKPQNE MAPQ /ANYTHING IN QUEUE?
JMP NEXMAP /NO
MAP0, GET1 MAPQ /YES-GET LINE NUM.
DCA MAPL
GET2 MAPQ
ION
DCA MAPC
MAP01, TAD MAPL /INPUT? (FROM TERMINALS)
SKPL
JMP MAP1 /YES
CMA
DCA MAPL /NO--OUTPUT
TAD (JMP I MAPODP)
JMP MAP2
MAP1, CLA
TAD (JMP I MAPIDP)
MAP2, DCA MAP3
TAD (200) /NULL LINE OR PORT?
AND MAPL
SKPE CLA
JMP MAPXIT /YES - IGNORE IT
TAD MAPL /ADDRESS LINTAB
TAD [LINTAB]
DCA MAPT
TAD (30) /NULL LINE?
AND I MAPT
SKPNE CLA
JMP MAPXIT /YES - IGNORE IT
TAD I MAPT / AND DISPATCH ON LINE STATE (BITS 9-11)
AND [7]
TAD MAP3
DCA MAP3
TAD MAPC / WITH CHAR. IN AC
MAP3, NOP /***MODIFIED FOR DISPATCH
MAPIDP, /-----DISPATCH FOR INPUT (& ACK)
MAPIJ /(0)--NORMAL JOB TERMINAL
MAPIO /(1)--OPERATOR
MAPIS /(2)--SPY
MAPIT /(3)--TALK
MAPXIT /(4)--NOT USED
MAPXIT /(5)--NOT USED
MAPXIT /(6)--NOT USED
MAPXIT /(7)--NOT USED
MAPODP, /-----DISPATCH FOR OUTPUT
MAPOJ /(0)--NORMAL
MAPOO /(1)--OPERATOR
MAPOS /(2)--SPY
MAPOT /(3)--TALK
MAPXIT /(4)--NOT USED
MAPXIT /(5)--NOT USED
MAPXIT /(6)--NOT USED
MAPXIT /(7)--NOT USED
MAPXIT, ION
CLA
IOF
SKPQNE MAPQ /ANYMORE?
XITMAP /NO
JMP MAP0 /YEP
PAGE
MAPIJ, /-----INPUT NORMAL USER
SKPNE /ACK?
JMP MAPIJ2 /YES
AND [377] /NO--ADD 'RECEIVER' BIT
TAD (400)
MAPIJ2, IOF / AND SEND TO DA-10
DCA CHARAC
TAD MAPL
DCA LINUMB
JMS I DAOPUJ
JMP MAPXIT
MAPIS, /-----INPUT SPY
SKPE /ACK?
JMP MAPIJ /NO
ISZ SPYACK /YES-2ND ONE?
JMP MAPXIT /NO--WAIT FOR IT
LACM2 /YES-PASS IT ON
DCA SPYACK
JMP MAPIJ
MAPIT, /-----INPUT TALK
SKPNE /ACK?
JMP MAPXIT /YES-IGNORE IT
IOF /NO--TURN IT AROUND FOR OUTPUT
DCA CHARAC
TAD MAPL
CMA
CALL MAPPUT
JMP MAPXIT
MAPIO, /-----INPUT OPERATOR
AND [177]
TAD (-CONX) /IS IT ^X ?
SKPE CLA
JMP MAPIO2 /NO
IOF
CALL MONINI /YES-INIT THE MONITOR & OPERATOR LINE
JMP MAPXIT
MAPIO2, TAD SPYLIN /SPYING OR TALKING?
SKPGE
JMP MAPIO3 /NO
DCA MAPL /YES-IMITATE IT
JMP MAP01
MAPIO3, CLA
TAD MAPC
SKPNE /ACK?
JMP MAPIO4 /YES
IOF /NO--SEND TO THE MONITOR
AND [177]
CALL MONPUT
JMP MAPXIT
MAPIO4, TAD MONACK /SET FLAG
CIA
SKPG / ONLY IF WAS WAITING FOR FLAG
JMP MAPXIT
DCA MONACK
REQMON / AND REQUEST THE MONITOR
JMP MAPXIT
MAPOS, /-----OUTPUT SPY
MAPOT, /-----OUTPUT TALK
JMS MAPOUT /OUTPUT FOR REAL LINE
TAD OPRLIN / AND OPERATOR LINE
SKPGE / IF THERE IS ONE
JMP MAPXIT
DCA MAPL
TAD MAPL
TAD [LINTAB]
DCA MAPT
MAPOJ, /-----OUTPUT NORMAL
MAPOO, /-----OUTPUT OPERATOR
JMS MAPOUT
JMP MAPXIT
/-----SUBROUTINE TO OUTPUT CHAR. ACCORDING TO DEVICE TYPE (LINTAB BITS 7-8)
MAPOUT, 0
CLA
TAD I MAPT /GET DEVICE TYPE
RTR
RAR
AND (3)
TAD (JMP I MAPOUD)
DCA MAPOU0 / AND DISPATCH ON IT
TAD MAPC / WITH CHAR. IN AC
MAPOU0, NOP
MAPOUD, MAPNX /(0)--NON-EXISTANT DEVICES (NULL LINES)
MAPCT /(1)--CONSOLE TTY
MAPTT /(2)--DC08A TTYS
MAPNX /(3)--NOT USED
MAPTT, /-----DC08A TTY
IOF
AND [177]
DCA TTCHAR
TAD MAPL
DCA LINUMB
TAD MAPL
TAD [LPTABB]
DCA TEMP
TAD I TEMP
CALL TTOPUT
JMP MAPOUX
MAPCT, /-----CONSOLE
IOF
CALL CTYPUT
MAPOUX, ION
MAPNX, CLA
JMP I MAPOUT
/SUBROUTINE TO SET/CHANGE SIGN BIT IN PLTAB & LPTAB
/ AC=LINE NUM.
/ LINK=DESIRED SIGN BIT
MAPBIT, 0
TAD [LPTABB]/ADDRESS LPTAB
JMS MAPBIP
TAD I TEMP /ADDRESS PLTAB
AND [177]
TAD [PLTABB]
JMS MAPBIP
JMP I MAPBIT
MAPBIP, 0 /AC=TABLE ADDRESS
DCA TEMP
TAD I TEMP
AND (200) /NEVER CHANGE SIGN BIT IF BIT4=1
SKPE CLA
JMP I MAPBIT
TAD I TEMP
AND (3777)
SZL
TAD (4000)
DCA I TEMP
JMP I MAPBIP
PAGE
/-----DATA SET CONTROLL INTERRUPT SERVICE
IFNZRO FTMOD<
IFZERO FT689 <
DSC, CARSKP /CARRIER?
JMP DSC2 /NO
CARRED /YES-READ SCANNER
CARCLR /CLEAR IRP AND RESTART SCANNER
DCA LINUMB
TAD LINUMB /ON OR OFF?
SKPL CLA
LAC1 /OFF
TAD (11) /ON
JMP DSC3
DSC2, RNGSKP /RING?
JMP NEXDSC /NO
RNGRED /YES-READ SCANNER
RNGCLR /CLEAR IRP AND RESTART SCANNER
DCA LINUMB
TAD (10)
DSC3, CALL MODPUT /QUEUE IT TO MOD
XITIRP
> /IFZERO FT689
IFNZRO FT689<
DSC, CARSKP /CARRIER?
JMP DSC2 /NO
CARCLR /YES-CLEAR IRP
XITIRP
DSC2, RNGSKP /RING?
JMP NEXDSC /NO
RNGCLR /YES-CLEAR IRP
XITIRP
> /IFNZRO FT689
/-----SUBROUTINE TO QUEUE SOMETHING FOR MOD
/
/LINUMB=LINE (OR MODEM) NUMBER
/AC=TRANSACTION CODE
MODPUT, 0
PUT1 MODQ,MODPUF
TAD LINUMB
PUT2 MODQ
MODPUF, REQMOD
JMP I MODPUT
MODQ, QHEAD MODQA,MODQL /THE QUEUE HEADER
/-----ROUTINE TO SERVICE MODQ QUEUE
MOD, SKPQNE MODQ /ANYTHING TO DO?
JMP NEXMOD /NO
MODD0, GET1 MODQ /YES-GET TRANSACTION CODE
DCA MODCOD /SAVE CODE
TAD MODCOD
AND (17)
TAD (JMP I MODJMP)/MAKE DISPATCH INSTRUCTION
DCA MODD1
GET2 MODQ /GET LINE (OR PORT) NUM.
ION
AND [177]
DCA MODL / AND SAVE IN MODL
MODD1, NOP /***MODIFIED FOR DISPATCH
MODJMP, /-----DISPATCH TABLE
MODDX /00--POLL FOR PRESENCE (FROM PDP-10)
MOD01 /01--HANG UP MODEM (FROM PDP-10)
MOD02 /02--ANSWER MODEM (FROM PDP-10)
MOD03 /03--REQUEST MODEM STATUS (FROM PDP-10)
MOD04 /04--PDP-10 RESTART (FROM PDP-10)
MODDX /05--RESERVED (FROM PDP-10)
MOD06 /06--HANGUP ALL MODEMS
MOD07 /07--ANSWER ALL MODEMS
MOD10 /10--RING (FROM DATA-SET)
MOD11 /11--CARRIER ON (FROM DATA-SET)
MOD12 /12--CARRIER OFF (FROM DATA-SET)
/SUBROUTINE TO CK THAT MODEM CONTROL IS ENABLED IF CODE FROM PDP-10
MODCK, 0
TAD MODFLG /CONTROL ENABLED?
SKPNE CLA
JMP I MODCK /YES
TAD MODCOD /NO--CAME FROM '10?
SKPL CLA
JMP I MODCK /NO--LET IT PASS
/YES-FALL INTO MODDX
MODDX, /-----RETURN HERE FROM DISPATCH
ION
CLA /ANY MORE TO DO?
IOF
SKPQNE MODQ
XITMOD /NO
JMP MODD0 /YES
MODCOD, 0
/SUBROUTINE TO UPDATE BIT IN MLTAB AND TELL PDP-10 CARRIER STATUS
/ MODL=MODEM NUM. (BITS 5-11)
/ MODC=SIGN BIT TO BE PUT IN MLTAB (PRESERVED)
/ AC=0
/ RETURNS IOF
/ ALSO CALLED BY MODINI
MODCAR, 0
IOF
JMS MODML /ADDRESS MLTAB AND CONVERT MODL
JMS MODLM /DOES THIS LINE HAVE MODEM?
JMP I MODCAR /NO
DCA MODL /YES-RESTOR MODMLT
JMS MODML
TAD I MODMLT /RESET CARRIER BIT ACCORDING TO LINK BIT
AND (3777)
TAD MODC
DCA I MODMLT
TAD MODC
SKPL CLA /WHAT WAS CARRIER?
TAD [CCICOF-CCICON]/OFF
TAD (CCICON)/ON
JMS MODTO /GO TELL IT TO THE TEN
JMP I MODCAR
PAGE
MOD02, /-----ANSWER MODEM (RAISE TERM.RDY.)
LACM1
MOD01, /-----HANG UP MODEM (DROP TERM.RDY.)
DCA MODTEM
JMS MODCK /CK FOR 'NO MODEM CONTROL'
TAD MODTEM
JMS MODTR /PERFORM T.R. OPERATION
JMP MODDX
MOD03, /-----RETURN CARRIER STATUS
JMS MODCK /CK FOR 'NO MODEM CONTROL'
JMS MODLM /ADDRESS LMTAB & GET PORT NUM.
JMP MODDX /NO MODEM ON THIS LINE
TAD [MLTABB]/ADDRESS MLTAB
DCA MODMLT
TAD I MODMLT /WHAT IS CARRIER STATUS?
SKPL CLA
TAD [CCICOF-CCICON]/OFF
TAD (CCICON)/ON
JMS MODTO /SEND IT TO PDP-10
JMP MODDX
MOD07, /-----ANSWER ALL MODEMS
LACM1
MOD06, /-----HANGUP ALL MODEMS
DCA MODTEM
TAD (-NUMLIN)
DCA MODK
DCA MODL
MOD061, TAD MODTEM /GET CODE
JMS MODTR /DO IT TO TRM.RDY.
INC MODL
ISZ MODK /FOR ALL LINES
JMP MOD061
JMP MODDX
MOD04, /-----RESTART
JMP START
MOD11, /-----CARRIER ON INTERRUPT
STL CLA RAR /SET SIGN BIT
MOD12, /-----CARRIER OFF INTERRUPT
DCA MODC
JMS MODCAR /UPDATE BIT IN MLTAB AND TELL PDP-10
JMP MODDX
MOD10, /-----RING INTERRUPT
JMS MODML /CONVERT MODL TO LINE NUM.
TAD (CCIRNG)/SEND CODE TO THE PDP-10
JMS MODTO
JMP MODDX
MODTEM, 0
MODK, 0
/-----SUBROUTINE TO ADDRESS MLTAB AND CONVERT MODL TO LINE NUMBER
/ MODL=MODEM PORT NUM.
/ AC=0
/ LEAVES MODMLT=ADDRESS OF MLTAB ENTRY
/ MODL=LINE NUM.
/ RESPECTS MODC
MODML, 0
TAD MODL
AND [177]
TAD [MLTABB]
DCA MODMLT
TAD I MODMLT
AND [177]
DCA MODL
JMP I MODML
/-----SUBROUTINE TO SEND SOMETHING TO THE PDP-10
/ AC=TRANSACTION CODE
/ MODL=LINE NUMBER
/ RETURNS IOF
MODTO, 0
IOF
DCA CHARAC
TAD MODL
DCA LINUMB
TAD MODFLG /IS CONTROL ENABLED?
SKPNE CLA
JMS I DAOPUJ /YES
JMP I MODTO
/SUBROUTINE TO ADDRESS LMTAB AND GET MODEM NUM.
/AC=0
/MODL=LINE NUMBER (PRESERVED)
/NON-SKIP-RETURN IF NO MODEM FOR THIS LINE (AC=0)
/SKIP-RETURN: AC=MODEM NUM.
/ MODMLT=ADDRESS OF LMTAB ENTRY
MODLM, 0
TAD MODL
TAD [LMTABB]
DCA MODMLT
TAD I MODMLT
SKPNE /MODEM FOR THIS LINE?
JMP I MODLM /NO
AND [177]
INC MODLM
JMP I MODLM
/-----SUBROUTINE TO DO SOMETHING TO TERMINAL READY
/ MODL=LINE NUM.
/ AC= 0: DROP TERM.RDY., -1: RAISE TERM.RDY.
/ ALSO CALLED BY MODINI
IFZERO FT689 <
MODTR, 0
DCA MODC /USE MODC AS SWITCH LATER
JMS MODLM /ADDRESS LMTAB AND GET MODEM NUM.
JMP I MODTR /NO MODEM THIS LINE
ISZ MODC /DO APPROPRIATE IOT
JMP MODTR1
DTRLOD /RAISE IT
JMP MODTR2
MODTR1, DTRCLR /DROP IT
MODTR2, CLA
JMP I MODTR
> /IFZERO FT689
IFNZRO FT689<
MODTR, 0
TAD (TAB689+3)/ADDRESS 3RD OR 4TH WORD OF ENTRY
DCA MODC
JMS MODLM /GET MODEM NUM.
JMP I MODTR /NO MODEM ON THIS LINE
AND (170) / AND CALC. TAB689 ADDRESS
CLL RAR
TAD MODC
DCA MODC
TAD I MODMLT /GET MODEM NUM. AGAIN & CALC BIT POSITION
AND (7)
CMA
IOF
DCA TEMP
STL CLA /SET LINK
MODTR2, RAL / AND ROTATE IT TO RIGHT PLACE
ISZ TEMP
JMP MODTR2
DCA TEMP /OR INTO TABLE
TAD TEMP
CMA
AND I MODC
TAD TEMP
DCA I MODC
ION
JMP I MODTR
> /IFNZRO FT689
/-----SUBROUTINE TO INIT THE MODEM CONTROL STUFF
IFZERO FT689 <
MODINI, 0
CALL QFLUSH /START WITH NEW QUEUE
MODQ
TAD (-200) /LOOK AT ALL 128 LINES
DCA TEMP
MODIN1, MODCLR CARRED /BUMP CARRIER SCANNER AND READ IT
DCA MODL /MODL=MODEM NUM.
STL CLA RAR /SET SIGN BIT
AND MODL /MOD= CARRIER BIT
DCA MODC
TAD MODL /WITHIN RANGE?
AND [177]
TAD (-MLO)
SKPGE
JMP MODIN3 /NO--TOO LOW
TAD (MLO-MHI)
SKPLE CLA
JMP MODIN3 /NO--TOO HIGH
JMS MODCAR /YES-SEND STATUS TO PDP-10 AND UPDATE MLTAB BIT
TAD MODC /GET CARRIER AGAIN
SKPGE CLA / AND SET TERM.RDY. ACCORDINGLY
LACM1
MODLOD /ALLOW TERM.RDY. TO BE CHANGED BY MODTR
JMS MODTR
MODIN3, CLA /LOOP
ISZ TEMP
JMP MODIN1
MODCLR /DESELECT ALL LINES
CARCLR /START CARRIER SCANNER
RNGCLR /START RING SCANNER
MODLOD /ENABLE INERRUPTS
JMP I MODINI
> /IFZERO FT689
IFNZRO FT689<
MODINI, 0
CALL QFLUSH /START WITH NEW QUEUE
MODQ
JMS M689I /INIT GROUP COUNTER
TAD (TAB689-1)/ADDRESS BIT TABLE
DCA AX0
MODLOD /TURN ON MODEM INTERFACE
MODIN2, DCA I AX0 /CLEAR RING BIT
CARRED /GET CARRIER BITS
DTRLOD /MAKE TRM.RDY. AGGREE
CMA
DTRCLR
AND (377) /PUT COMPLIMENT OF BITS IN TABLE
DCA I AX0 / SO MOL WILL SEND THEM TO PDP-10
DCA I AX0 /CLEAR TRM.RDY ON BITS
DCA I AX0 /CLEAR TRM.RDY OFF BITS
JMS M689B /NEXT GROUP
JMP MODIN2 / AND LOOP
RNGCLR / AND CLEAR OUTSTANGING ONES
CARCLR
JMP I MODINI
> /IFNZRO FT689
PAGE
IFNZRO FT689<
/SUBROUTINE TO SCAN MODEMS
/ SINCE INTERRUPTS ARE UNDEPENDABLE, THEY ARE
/ IGNORED AND SIMULATED BY SCANNING ALL MODEMS 5 TIMES A SECOND.
MOL, 0
JMS M689I /INIT GROUP HARDWARE & M689M
TAD (TAB689)/INIT TABLE PTR.
DCA MOLP
MOL0, TAD (10) /CODE 10 FOR 'RING IRP' TO MOD
DCA MOLX
RNGRED /GET NEW RING BITS
JMS MOLUP / AND SERVICE THEM
INC MOLX /CODE 11 FOR 'CARRIER ON IRP' TO MOD
INC MOLP /ADDRESS CARRIER BITS
TAD I MOLP / AND SAVE THEM
DCA MOLO
CARRED /GET NEW ONES
JMS MOLUP / AND SERVICE THEM
INC MOLX /CODE 12 FOR 'CARRIER OFF IRP' TO MOD
TAD I MOLP /GET BITS THAT JUST WENT OUT
CMA
AND MOLO
JMS MOLBIT / AND SERVICE THEM
INC MOLP /ADDRESS TRM.RDY-ON BITS
TAD I MOLP / AND TURN THEM ON
DTRLOD
CLA / AND CLEAR TABLE ENTRY
DCA I MOLP
INC MOLP /ADDRESS TRM.RDY-OFF BITS
TAD I MOLP / AND TURN THEM OFF
DTRCLR
CLA / AND CLEAR TABLE ENTRY
DCA I MOLP
INC MOLP /BUMP TO NEXT GROUP
JMS M689B
JMP MOL0
JMP I MOL
/-----SUBROUTNE TO INIT GROP COUNTER FOR 689AG
/ RETURNS WITH HARWARE SET TO 1ST GROUP
/ AND M689M=MODEM NUM.-1 OF 1ST LINE IN THAT GROUP
M689I, 0
GRPCLR /GROUP 0
LACM1 /MODEM NUM. -1
DCA M689M
TAD (-M689LO)/SET UP FOR 1ST GROUP
SKPNE
JMP M689I1
DCA M689K
M689I0, JMS M689B
JMP M689I0
M689I1, TAD (M689LO-M689HI-1)/SET UP M689B COUNTER
DCA M689K
JMP I M689I
/-----SUBROUTINE TO BUMP TO NEXT GROUP OF 689AG
/ NON-SKIP RETURN IF ANOTHER GROUP (M689M INC. BY 10)
/ SKIP RETURN IF NO MORE GROUPS
/ CALL M689I TO SET TO 1ST GROUP
M689B, 0
GRPINC /NEXT GROUP
TAD (10) /NEXT M689M
TAD M689M
DCA M689M
ISZ M689K /ANY MORE?
JMP I M689B /YES-NON-SKIP RETURN
INC M689B /NO-SKIP RETURN
JMP I M689B
M689K, 0
/-----SUBROUTINE TO UPDATE TAB689 FROM HARDWARE
/ AC=NEW GROUP BITS
/ MOLP=ADDRESS TAB689 WORD
/ MOLX=TRANSACTION CODE FOR MOLBIT
MOLUP, 0
DCA MOLT /SAVE NEW BITS
TAD I MOLP /FIND BITS THAT JUST LIT UP
CMA
AND MOLT
JMS MOLBIT / AND QUEUE THEM TO MOD
TAD MOLT /PUT NEW BITS IN TAB689
DCA I MOLP
JMP I MOLUP
MOLX, 0
MOLT, 0
MOLP, 0
MOLO, 0
/-----SUBROUTINE TO LOOK FOR CHANGES IN BITS
/ AC=BITS
/ MOLX=TRANSACTION CODE FOR MOD
/ M689M=MODEM NUM.-1 OF FIRST BIT
MOLBIT, 0
DCA MOLBT
DCA MOLBL
MOLBI1, TAD MOLBT /GET BITS
SKPNE /ANY ON?
JMP I MOLBIT /NO
MOLBI2, INC MOLBL /YES-BUMP LINE NUM.
IOF
CLL RAR /NEXT BIT TO LINK
ION
SNL CLL /IS IT LIT?
JMP MOLBI2 /NO
DCA MOLBT /YES-SAVE BITS
TAD M689M /MAKE REAL MODEM NUM.
TAD MOLBL
IOF
DCA LINUMB /AND CALL MODPUT
TAD MOLX
CALL MODPUT
ION
JMP MOLBI1
MOLBT, 0
MOLBL, 0
PAGE
> /IFNZRO FT689
> /IFNZRO FTMOD
/-----SUBROUTINE TO INIT THE MONITOR & OPERATOR LINE
MONINI, 0
CLA
CALL QFLUSH /FLUSH ANY INPUT
MONQ
TAD MONCCX /SEND ^X
CALL MONPUT
DCA MONACK /CLEAR ACK.FLAG
TAD SPYLIN /RESET SPY/TALK LINE
SKPGE
JMP I MONINI
TAD [LINTAB]
DCA TEMP
TAD I TEMP
AND (7770)
DCA I TEMP
TAD I TEMP /IF DC08 LINE:
AND (30)
SKPE CLA
JMP MONIN2
TAD SPYLIN / CLEAR SIGN BITS IN PLTAB & LPTAB
CLL
CALL MAPBIT
MONIN2, LACM1 /RESET SPYLIN
DCA SPYLIN
JMP I MONINI
/-----SUBROUTINE TO PUT A CHARACTER TO THE MONITOR
/
/ TAD CHARACTER
/ CALL MONPUT
/ ... /RETURN AC=0
MONPUT, 0
PUT MONQ,MONFUL
MONFUL, REQMON
JMP I MONPUT
MONQ, QHEAD MONQA,MONQL /THE MONQ HEADER
/-----THE MONITOR
MON, TAD MONACK /WAITING FOR ACK.?
SKPGE CLA
JMP NEXMON /YES-DONT ENTER YET
TAD MONACK /NO--WAS IT ACK.?
SKPE CLA
JMP MONOAK /YES
SKPQNE MONQ /NO--ANYTHING IN QUEUE?
JMP NEXMON /NO
MON0, GET MONQ /YES-GET IT
ION
AND [177]
DCA MONCAR
TAD (-7) /IS THIS THE BELL?
TAD MONCAR
SKPNE CLA
JMP MONEC /YES-JUST ECHO IT
DCA ERRFLG /TYPEIN SUPPRISSES TERRORS
LAC1 /AND BELL
AND PDP10D
DCA PDP10D
TAD MONCAR /IS IT A DIGIT?
TAD (-067) /-"7"
SKPLE
JMP MON1 /NO
TAD [7]
SKPGE
JMP MON1 /NO
DCA MONTEM /YES-BUILD NUMBER
TAD MONNUM
CLL RAL
CLL RTL
TAD MONTEM
DCA MONNUM
LACM1
DCA MONNUF /SET 'NUMBER' FLAG
JMP MONEC /ECHO THE DIGIT
MON1, CLA /DO A TABLE LOOKUP ON THE CHAR.
TAD (MONCDT)
DCA MONTEM
MON10, TAD MONCAR
CIA
TAD I MONTEM
INC MONTEM
SKPNE CLA
JMP I MONTEM /FOUND IT--DISPATCH
INC MONTEM
JMP MON10
MONXIT, IOF /HERE TO HERE TO EXIT OR DO NEXT INPUT
SKPQNE MONQ
XITMON
JMP MON0
PAGE
/-----PLACES TO GO WHEN FINISHED WITHE A CHAR.
MON30, TAD MONCAR /TYPE (MONCAR) CRLF +
MON31, CALL MONOUT /TYPE (AC) CRLF +
MON32, TAD (053) /TYPE CRLF +
MON33, DCA MONCAR /TYPE CRLF (MONCAR)
JMS MONOCL
MON35, DCA MONSLF /CLEAR/SET SLASH FLAG
DCA MONNUM /CLEAR NUMBER
DCA MONNUF / AND NUMBER FLAG
MONEC, TAD MONCAR /TYPE MONCAR
MONEAC, CALL MONOUT
JMP MONXIT
MONX=MON32 /-----^X
MONRO, /-----RUBOUT
ION
CLA
TAD (077) /END LINE WITH ?
JMP MON31
MONEQ, /-----ILLEGAL CHARACTER
TAD (077) /ECHO ?
JMP MONEAC
MONCR, /-----CARRAGE RETURN
JMS MONSLO /PROCESS OPEN SLASH (IF ANY)
JMP MON32
MONLF, /-----LINE FEED
JMS MONSLO /PROCESS OPEN SLASH (IF ANY)
INC MONLOC /BUMP LOC. CTR.
NOP
JMS MONOCL /TYPE CRLF
TAD MONLOC / ADDRESS
CALL MONON
JMP MONSL1 / AND SIMULATE "/"
MONSL, /-----SLASH
ISZ MONNUF /IF NUMBER TYPED, SET LOC.CTR.
JMP MONSL1
TAD MONNUM
DCA MONLOC
MONSL1, TAD MONCSL /TYPE "/ "
CALL MONOUT
TAD MONCSP
CALL MONOUT
TAD I MONLOC / CONTENTS
CALL MONON
TAD MONCSP / AND SPACE
DCA MONCAR
LACM1 /SET 'OPEN SLASH' FLAG
JMP MON35
IFNZRO FTMOD<
MONH, /-----HANGUP
LAC1 /CODE 1 FOR 'HANGUP'
JMP MONA1
MONA, /-----ANSWER
LAC2 /CODE 2 FOR 'ANSWER'
MONA1, DCA MONTEM
JMS MONLCK /GOOD LINE NUM.?
SKPGE CLA /ALL LINES?
TAD (5) /YES-TURN 1 OR 2 INTO 6 OR 7
TAD MONTEM
DCA MONTEM
IOF
TAD MONNUM /YES-SEND TO MOD
DCA LINUMB
TAD MONTEM
CALL MODPUT
JMP MON30
> /IFNZRO FTMOD
MONS, /-----SPY
LAC2 /STATE=2 FOR SPY
JMP MONT1
MONT, /-----TALK
LAC3 /STATE=3 FOR TALK
MONT1, DCA MONTT
JMS MONLCK /CHECK FOR LEGAL LINE NUM.
SKPGE CLA /-1 NOT ACCEPTABLE
JMP MONEQ
TAD MONCAR /ECHO T OR S
CALL MONOUT
JMS MONOCL /TYPE CRLF
IOF
TAD I MONNUF /(MONLCK SETUP MONNUF)--WHAT STATE LINE IN?
AND [7]
SKPE CLA
JMP MONRO /NOT NORMAL--ILLEGAL
TAD MONTT /NORMAL--MAKE SPY OR TALK
TAD I MONNUF
DCA I MONNUF
TAD MONNUM /SET SIGN BIT IN PLTAB & LPTAB
STL
CALL MAPBIT
TAD MONNUM /SET SPYLIN
DCA SPYLIN
LACM2 /SET SPYACK
DCA SPYACK
CALL QFLUSH /CLEAR ANY PENDING INPUT
MONQ
XITMON / AND GO AWAY
MONTT, 0
/-----SUBROUTINE TO TYPE CRLF
MONOCL, 0
TAD MONCCR
CALL MONOUT
TAD MONCLF
CALL MONOUT
JMP I MONOCL
MONCDT, /-----THE CHAR. DISPATCH TABLE
IFNZRO FTMOD<
101 /A
JMP MONA
110 /H
JMP MONH
> /IFNZRO FTMOD
105 /E
JMP MONE
123 /S
JMP MONS
124 /T
JMP MONT
MONCCX, CONX /^X
JMP MONX
MONCSL, 057 //
JMP MONSL
MONCLF, 012 /L.F.
JMP MONLF
MONCCR, 015 /C.R.
JMP MONCR
MONCSP, 040 /SPACE
JMP MONEC
177 /R.O.
JMP MONRO
MONCAR, 0 /MUST IMMEDIATELY FOLLOW MONCDT
JMP MONEQ /MUST IMMEDIATELY FOLLOW MONCAR
/MONSLF, 0 /-1: OPEN SLASH (DEPOSIT IF NUMBER TYPED)
/MONLOC, 0 /LOCATION CTR. FOR "/"
/MONNUM, 0 /NUMBER TYPED IN
/MONNUF, 0 /-1: NUMBER WAS TYPED IN
/MONTEM, 0 /A TEMP.
PAGE
/SUBROUTINE TO CK FOR LEGAL LINE NUM.
MONLCK, 0
ISZ MONNUF /NUMBER TYPED?
JMP MONEQ /NO--TYPE ?
TAD MONNUM /YES-IS IT IN RANGE?
SKPGE /NEGATIVE?
JMP I MONLCK /YES-RETURN IT
TAD (-NUMLIN)
SKPL
JMP MONRO /NO--TYPE ? CRLF +
TAD (LINTAB+NUMLIN)/YES-ADDRESS LINTAB
DCA MONNUF
JMP I MONLCK
MONE, /-----ERROR PRINT
TAD MONCAR /ECHO THE E
CALL MONOUT
TAD TIME / FOLLOWED BY THE TIME
CALL MONON
CALL MONOCL / AND A CRLF
MONE2, IOF
SKPQE ERRQ /ANYTHING IN THE QUEUE?
JMP MONE3 /YES
LACM1 /NO-RESET FLAG
DCA ERRFLG
JMP MON32
MONE3, GET1 ERRQ
ION
CALL MONON / AND PRINT
TAD (056)
CALL MONOUT
IOF
GET2 ERRQ
ION
CALL MONON
CALL MONOCL
JMP MONE2 /LOOP
/SUBROUTINE TO PUT SOMETHING IN THE ERROR-TYPOUT QUEUE
/ TAD CODE-2
/ CALL ERRPUT
/ CODE-1
/ ... /RETURN HERE
ERRPUT, 0
DCA TEMP
SKPQNF ERRQ /CK FOR FULL QUEUE
JMP ERRPU2 /YES-THROW IT AWAY
TAD I ERRPUT
PUT1 ERRQ,ERRPU2
TAD TEMP
PUT2 ERRQ
LAC1 /IF ERRFLG=-1,SET IT TO +1
AND ERRFLG
DCA ERRFLG
ERRPU2, INC ERRPUT
JMP I ERRPUT
ERRQ, QHEAD ERRQA,ERRQL
ERRFLG, 0
PAGE
/-----SUBROUTINE TO CK. FOR AND PROCESS OPEN SLASH
MONSLO, 0
ISZ MONSLF /OPEN?
JMP I MONSLO /NO
ISZ MONNUF /YES-NUMBER TYPIN?
JMP I MONSLO /NO
TAD MONNUM /YES-DEPOSIT IT
DCA I MONLOC
JMP I MONSLO
/-----SUBROUTINE TO OUTPUT OCTAL NUMBER
/
/ TAD NUMBER
/ JMS MONON
/ ... /RETURN AC=0
MONON, 0
DCA MONONN
TAD (-4) /COUNT 4 DIGITS
DCA MONONK
MONON1, IOF /PROTECT LINK BIT
TAD MONONN
CLL RAL
RTL
DCA MONONN
TAD MONONN
ION
RAL
AND [7]
TAD (060) /MAKE ASCII
CALL MONOUT /TYPE IT
ISZ MONONK
JMP MONON1
JMP I MONON
MONONN, 0
MONONK, 0
/-----SUBROUTINE TO OUTPUT A CHAR
/
/ TAD CHARACTER
/ CALL MONOUT
/ ... /RETURN AC=0
MONOUT, 0
IOF
DCA CHARAC
TAD OPRLIN /OPERATOR LINE?
SKPGE
JMP MONOAK /NO--IGNORE IT
CMA /YES-SEND IT TO MAP
CALL MAPPUT
LACM1 /SET FLAG TO 'WAIT FOR ACK'
DCA MONACK
IOF
IRPMON
IOF
CLA
XITMON / AND EXIT
MONOAK, ION /HERE WHEN ACK RECEIVED
CLA
DCA MONACK /CLEAR ACK FLAG
JMP I MONOUT / AND RETURN TO CALLER
/-----1/5 SECOND CLOCK
TIK, TAD TIKTIK
SKPGE CLA
JMP NEXTIK
TAD (-BAUD)
DCA TIKTIK
TAD NULDIS /UPDATE NULL DISPLAY
DCA NULJAC
DCA NULDIS
TAD (-24)
DCA NULCTR
ION
IFNZRO FTMOD<
IFNZRO FT689<
JMS MOL /SCAN MODEM CONTROLS
>> /IFNZRO FT689 IFNZRO FTMOD
ISZ TIKFIV /COUNT TO 1 SECOND
JMP TIK3
TAD (-5)
DCA TIKFIV
JMS SWICH
ION
ISZ TIKSEC /SERVICE TIME AND DAY
JMP TIK2
TAD (-36)
DCA TIKSEC
INC TIME
ISZ TIKMIN
JMP TIK2
TAD (-74)
DCA TIKMIN
TAD (100)
TAD TIME
AND (7700)
DCA TIME
ISZ TIKHOR
JMP TIK2
TAD (-30)
DCA TIKHOR
DCA TIME
INC DAY
NOP
TIK2,
IFNZRO FTSIM < /CHECK FOR CHANGES TO LINTAB SIMULATOR BITS
JMS SIMCK
> /IFNZRO FTSIM
IOF
TAD ERRFLG /START AUTO ERROR TYPEOUT?
SKPG CLA
JMP TIK21 /NO
DCA ERRFLG /YES-SEND 'E' TO MON
TAD (105)
JMP TIK22
TIK21, TAD PDP10D /PDP-10 JUST DIE?
SKPL CLA
JMP TIK23 /NO
TAD (007) /YES-DING THE OPERATOR
TIK22, CALL MONPUT
TIK23, ION
NOP
TIK3, IOF
CLA
XITTIK
TIKFIV, -5
TIKSEC, -24 /COUNT SECONDS
TIKMIN, -74 /COUNT MINUTES
TIKHOR, -30 /COUNT HOURS
PAGE
/-----SUBROUTINE TO READ AND OBEY SWITCHES
/
/AC=0 IF FROM TIK, =-1 IF FROM START
SWICH, 0
DCA SWICHF /SAVE AC
TAD SWITCH /SAVE OLD SWITCHES
DCA OSWICH
TAD (SWIT1) /OR IN 'ALWAYS 1'
OSR
AND (-SWIT0-1)/AND OUT 'ALWAYS 0'
DCA SWITCH
TAD (ION)
DCA JSWIC0
ISZ SWICHF /FROM START?
JMP SWICH1 /NO
INC JSWIC0 /YES-TURN ION INTO IOF
TAD SWITCH / AND MAKE OLD SWITCHES=COMP.OF NEW ONES
CMA
DCA OSWICH
SWICH1, TAD SWITCH /NSWICH=NEW SWITCHES FOR JSWICH
DCA NSWICH
JMS JSWICH /SETUP LINK & SIGN
JMS BIT11 /FOR CONSOL SWITCH
JMS JSWICH
JMS BIT10 /FOR MOD.CONTROL SWITCH
JMS JSWICH
JMS BIT9 /FOR '10 QUERY SWICH
JMS JSWICH
JMS BIT8 /FOR DISABLE '10 IRPS SWITCH
JMP I SWICH
/PUT NEW BIT IN LINK
/SET SIGN=0 IF OLD BIT SAME, =1 IF DIFFERENT
JSWICH, 0
CLA
JSWIC0, ION /MODIFIED (ION/IOF)
TAD OSWICH /GET OLD BIT
IOF
RAR
DCA OSWICH
TAD NSWICH /GET NEW BIT
RAR
DCA NSWICH
TAD NSWICH
SZL /SET SIGN IF DIFFERENT
CMA
JMP I JSWICH
NSWICH, 0
OSWICH, 0
SWICHF=NSWICH
/ENABLE/DISABLE PDP-10 INTERRUPTS
BIT8, 0
SMA CLA /CHANGE?
JMP I BIT8 /NO
SZL /YES--WHICH WAY?
JMP BIT81 /DISABLE
TAD (DAOUT) /ENABLE
DCA DAOUTJ
TAD (DAOQUE)
DCA DAOQUJ
TAD (DAOPUT)
DCA DAOPUJ
JMP BIT82
BIT81, TAD (NILROT)
DCA DAOUTJ
TAD (NILROT)
DCA DAOQUJ
TAD (NILROT)
DCA DAOPUJ
CALL QFLUSH
DAOQ
LACM1
BIT82, DCA PDP10I
JMP I BIT8
/ENABLE/DISABLE PDP-10 QUERY
BIT9, 0
SMA CLA /JUST CHANGE?
JMP BIT91 /NO
LAC1 /YES--SET TO STATE 2
DCA PDP10F
JMP BIT96
BIT91, SZL /ENABLED?
JMP I BIT9 /NO
TAD PDP10F /YES-WHATS THE FLAG?
SKPNE
JMP BIT94 /(0)-CLEAR PDP10D
BIT93, TAD (-2)
SKPE
JMP BIT95
TAD PDP10D /(2)- DEAD ALREADY?
SKPE CLA
JMP BIT98 / YES
LACM1 /SEND 7777.7777 TO ERR
CALL ERRPUT
7777
LACM1 /AND SET DEAD FLAG
BIT94, DCA PDP10D
JMP BIT98
BIT95, SKPL CLA
JMP I BIT9 /(3)- DONT DO ANYTHING
BIT96, TAD (CCIPOL)/(1)- POKE THE PDP-10
DCA CHARAC
JMS I DAOPUJ
BIT98, INC PDP10F /INC. THE QUERY FLAG
JMP I BIT9
/ENABLE/DISABLE MODEM SERVICE
BIT10, 0
IFNZRO FTMOD<
CLA /SET FLAG ACCORDING TO BIT
SZL
LAC1
DCA MODFLG
> /IFNZRO FTMOD
JMP I BIT10
/ENABLE/DISABLE CONSOLE TTY
BIT11, 0
SMA CLA /CHANGED?
JMP I BIT11 /NO
TAD LINTAB+OPLINE/YES-SET LINTAB STATE
AND (7770)
SNL
IAC / TO 1 IF ENABLED
DCA LINTAB+OPLINE / 0 IF DISABLED
TAD (OPLINE) /SET OPRLIN
SZL
LACM1 / -1 IF DISABLED
DCA OPRLIN / OPLINE IF ENABLED
CALL MONINI /INIT MON
JMP I BIT11
PAGE
/-----SUBROUTINE TO FLUSH A QUEUE
/ IOF
/ JMS QFLUSH
/ QUEUE HED.ADDRESS
/ ... /RETURN AC=0,IOF
/ /USES AX0,AX1,AX2
QFLUSH, 0
LACM1
TAD I QFLUSH
DCA AX0
TAD I AX0
DCA AX1
TAD I AX0
DCA AX2
TAD AX1
DCA I AX0
TAD AX2
DCA I AX0
TAD AX1
DCA I AX0
LACM1
DCA I AX0
LACM1
TAD AX2
DCA I AX0
INC QFLUSH
JMP I QFLUSH
/-----SUBROUTINE TO CHANGE SIMULATOR BITS IN LINTAB
IFNZRO FTSIM <
SIMCK, 0
TAD SIMFLG /REQUEST TO SET SOME BITS?
SKPGE CLA
JMP I SIMCK /NO
TAD SIMAD1 /YES-GET 1ST ADDRESS
IOF
DCA SIMCKL
SIMCK0, TAD SIMAD2 /GET LAST ADDRESS
CIA / AND SEE IF WEVE REACHED IT YET
TAD SIMCKL
SKPLE CLA
JMP SIMCK3 /YES-EXIT LOOP
TAD SIMCKL /NO--ADDRESS LINTAB
TAD [LINTAB]
DCA SIMCKA
TAD I SIMCKA /AND INSERT SIMFLG BITS
AND (1777)
DCA I SIMCKA
LAC3
AND SIMFLG
CLL RTR
RAR
TAD I SIMCKA
DCA I SIMCKA
TAD (052) /START THINGS GOING WITH A CHARACTER
DCA CHARAC
TAD SIMCKL
DCA LINUMB
CALL PDP10
INC SIMCKL /NEXT LINE NUM.
JMP SIMCK0
SIMCK3, LACM1 /RESET SIMFLG
DCA SIMFLG
ION
JMP I SIMCK
SIMCKA, 0
SIMCKL, 0
PAGE
> /IFNZRO FTSIM