Trailing-Edge
-
PDP-10 Archives
-
dec-10-omona-u-mc9
-
dc72np.pal
There are 6 other files named dc72np.pal in the archive. Click here to see a list.
/DC72NP - NETWORK REMOTE STATION SOFTWARE FOR DECSYSTEM-10 - 11 JAN 77
/***COPYRIGHT 1973,1974,1975,1976,1977 BY DIGITAL EQUIPMENT CORP., MAYNARD MASS. ***
/DAVE MCCLURE 20-FEB-1973
/KALMAN RETI 25-APR-1975
/ THIS CODE WILL ASSEMBLE EITHER DC71 OR DC72 CODE
/ THE EXISTENCE OF A FEATURE TEST SWITCH IN THIS CODE DOES NOT IMPLY
/ THE SWITCH IS TESTED OR SUPPORTED.
/ E.G. FEATURE TEST SWITCHES ARE PROVIDED FOR STATIONS WITH A HIGH
/ SPEED PAPER TAPE READER/PUNCH OR A PLOTTER BUT THESE ARE NOT
/ SUPPORTED.
MAJOR=0;MINOR=27
VEDIT=MAJOR^100+MINOR /SOFTWARE VERSION NUMBER
/STARTING INSTRUCTIONS
/ NORMAL STARTING ADDRESS IS 200
/ RESTART ADDRESS IS 200
/ASSEMBLY INSTRUCTIONS
/ .R PAL10
/ *DSK:CLDR.BIN=DSK:CLDR.PAL
/ *DSK:PCH.BIN=DSK:C.PAL,DSK:DC72NP.PAL
/ WHERE C.PAL IS A CONFIGURATION FILE
/ THEN
/ .R 8CARDS TO PRODUCE A CARD DECK
/ OR
/ .R PIP
/ *PTP:/I=DSK:PCH.BIN
/DEFAULT SWITCHES
IFNDEF PDP8 <PDP8=2> /FOR PDP8I USE 1
/FOR PDP8E USE 2
PDP8I=PDP8-1
PDP8E=PDP8-2
IFNDEF FTDP01 <
IFZERO PDP8I <FTDP01=-1>/DEFAULT IS DP01 HDW
IFZERO PDP8E <FTDP01=0> /DEFAULT FOR 8E IS DP8E
>/END OF IFNDEF FTDP01
IFNZRO FTDP01 <FTDP8E=0>
IFZERO FTDP01 <FTDP8E=-1>
IFNDEF FTDC02F <
IFZERO PDP8I <FTDC02F=-1>/DEFAULT IS DC02F HDW
IFZERO PDP8E <FTDC02F=0>/DEFAULT FOR 8E IS KL8E
>/END OF IFNDEF FTDC02F
IFNDEF TTYN <TTYN=20> /DEFAULT IS SIXTEEN TTY'S
IFNDEF CDRN <CDRN=1> /DEFAULT IS ONE CDR
IFNZRO CDRN <CDRN=1> /AT MOST ONE CDR
IFNDEF LPTN <LPTN=1> /DEFAULT IS ONE LPT
IFNZRO LPTN <LPTN=1> /AT MOST 1
IFNDEF FTLPLC <FTLPLC=0> /1 IF LPT HANDLES LC CHARS
IFNDEF LPTWID <LPTWID=204> /WIDTH OF LPT
/ 132 DECIMAL IS 204 OCTAL
/ 80 DECIMAL IS 120 OCTAL
IFNDEF LPTFAK <LPTFAK=0> /IF NONZERO THROW AWAY LPT OUTPUT
IFNDEF PTRN <PTRN=0> /DEFAULT IS NO PTR - NOT SUPPORTED
IFNZRO PTRN <PTRN=1> /AT MOST ONE PTR
IFNDEF PTPN <PTPN=0> /DEFAULT IS NO PTP - NOT SUPPORTED
IFNZRO PTPN <PTPN=1> /AT MOST ONE PTP
PLTN=0
IFNDEF PLTN <PLTN=0> /PLOTTER XY8/E - NOT SUPPORTED
IFNZRO PLTN <PLTN=1> /AT MOST ONE PLT
IFNDEF DTAN <DTAN=0> /DEFAULT IS NO DTA
/ NOT IMPLEMENTED
IFNDEF CNKSIZ <CNKSIZ=10> /SIZE OF CHUNKS - DEFAULT IS 8 WORDS
CNKSIZ=CNKSIZ&374 /MUST BE IN RANGE 4-200
IFZERO CNKSIZ <CNKSIZ=40>
Z=-CNKSIZ
CNKSIZ=CNKSIZ&Z / MUST BE A POWER OF 2
IFNDEF FTDEBUG <FTDEBUG=1> /1 FOR DEBUGGING FEATURES
IFNDEF FTLBACK <FTLBACK=0> /1 FOR LOOPBACK TEST
IFNDEF FTTRBL <FTTRBL=0> /1 FOR CTY MSG ON DEVICE TIMEOUT
IFNDEF FTBIGL <FTBIGL=0> /0 TO XLIST UNUSED CODE
IFNDEF CNKFLD <CNKFLD=1> /0 = KEEP CHUNKS IN FIRST FIELD
CNKFLD=CNKFLD&0007 / 1 = KEEP CHUNKS IN SECOND FIELD
/ 2 = KEEP CHUNKS IN THIRD FIELD
IFNDEF NUMSYN <NUMSYN=10> /NUMBER OF SYNCHS AT BEGINING OF MESSAGE
IFNDEF OURNNM <OURNNM=72>/OUR NODE NUMBER
IFNDEF MAXOLN <MAXOLN=240+4>/MAX OUTPUT MESSAGE LENGTH=CARD+OVRHEAD
DEVN=1+TTYN+CDRN+LPTN+PTRN+PTPN+PLTN+DTAN
CTRLN=1+LPTN+CDRN+PTPN+PTRN+PLTN/NUMBER OF CONTROLLERS(FOR DDCMP)
IFNDEF REPTIM <REPTIM=170> /REP TIMEOUT = 2 SECS
IFNZRO DTAN <CTRLN=CTRLN+1>
IFNDEF TTYMIC <TTYMIC=120> /MAXIMUM NUMBER OF INPUT CHARS FROM A TTY
ERSCNT=2
IFNZRO CDRN <ERSCNT=ERSCNT+CDRCNK>/WORST CASE CARD LENGTH
IFNZRO PTRN <ERSCNT=ERSCNT+1> /WORST CASE TO STOP PTR
IFNDEF DP8ETR <DP8ETR=0 /CODE TO TRACE DP8E MESSAGES
IFNZRO FTDP8E <
IFNZRO FTDEBUG <
/DP8ETR=1 /DEFAULT IS TRACE OFF
>/END OF IFNZRO FTDEBUG
>/END OF IFNZRO FTDP8E
>/END OF IFNDEF DP8ETR
/SOFTWARE IDENTIFICATION STRING (SID)
DEFINE SIDTXT <
"D;"C;"7;260+PDP8;"N;"P;" ;"V;"0;".;"2;"7-200;"1;"1;"-;"J;"A;"N;"-;"7;"7-200
>/END SIDTXT DEFINITION
/ SET DEFAULT CHUNK COUNTS
IFNDEF LPTCHK <LPTCHK=-20>
IFNDEF TTYCHK <TTYCHK=-4>
IFNDEF BOOTSZ <BOOTSZ=1420> /SIZE OF BOOTSTRAP PROGRAM
/ SET RESTRICTED NODE NUMBER TO 0 FOR ALL DEVICES
XLIST
IFNDEF CTYRNN <CTYRNN=0>
IFNDEF T00RNN <T00RNN=0>
IFNDEF T01RNN <T01RNN=0>
IFNDEF T02RNN <T02RNN=0>
IFNDEF T03RNN <T03RNN=0>
IFNDEF T04RNN <T04RNN=0>
IFNDEF T05RNN <T05RNN=0>
IFNDEF T06RNN <T06RNN=0>
IFNDEF T07RNN <T07RNN=0>
IFNDEF T10RNN <T10RNN=0>
IFNDEF T11RNN <T11RNN=0>
IFNDEF T12RNN <T12RNN=0>
IFNDEF T13RNN <T13RNN=0>
IFNDEF T14RNN <T14RNN=0>
IFNDEF T15RNN <T15RNN=0>
IFNDEF T16RNN <T16RNN=0>
IFNDEF T17RNN <T17RNN=0>
IFNDEF T20RNN <T20RNN=0>
IFNDEF T21RNN <T21RNN=0>
IFNDEF T22RNN <T22RNN=0>
IFNDEF T23RNN <T23RNN=0>
IFNDEF T24RNN <T24RNN=0>
IFNDEF T25RNN <T25RNN=0>
IFNDEF T26RNN <T26RNN=0>
IFNDEF T27RNN <T27RNN=0>
IFNDEF CDRRNN <CDRRNN=0>
IFNDEF LPTRNN <LPTRNN=0>
IFNDEF PTRRNN <PTRRNN=0>
IFNDEF PTPRNN <PTPRNN=0>
IFNDEF PLTRNN <PLTRNN=0>
XLIST
/CORE LAYOUT FOR THIS VERSION OF DC72 CODE
/PAGE 0
/ 0-7 INTERRUPT TRAP
/ 10-17 AUTOINDEX REGISTERS
/ 20-25 INTERRUPT DISSMISS ROUTINE
/ 26-177 COMMON VARIABLE STORAGE
/PAGE 1
/ 200 NORMAL STARTING ADDRESS
/ 201 HALT (FORMERLY DUMP STARTING ADDRESS)
/ 202 VERSION NUMBER OF DC72 CODE
/
/ DUMP ROUTINE
/ INITIALIZATION
/ NON-INTERRUPT LEVEL CODE
/ DEVICE INTERRUPT ROUTINES
/ * CHANGE TO CHUNK FIELD *
/ TABLE DATA = DEVICE BLOCKS, MESSAGES, PARITY TABLE, LPT VFU ETC.
/ SYSCHK - OVERWRITTEN LATER TO FORM CHUNKS
/EIA PINS FROM DP8E AND DP01
/ 1 PROTECTIVE GROUND
/ 2 TRANSMITTED DATA
/ 3 RECEIVED DATA
/ 4 REQUEST TO SEND
/ 5 CLEAR TO SEND
/ 6 DATA SET READY
/ 7 SIGNAL GROUND
/ 8 RECEIVED LINE SIGNAL DECTECTOR
/ 17 RECEIVED SIGNAL ELEMENT TIMING
/ 20 DATA TERMINAL READY
/ 21 SIGNAL QUALITY DETECTOR
/ 22 RING INDICATOR
/ 24 TRANSMIT SIGNAL ELEMENT TIMING
/CARD LOADER FOR DC71'S IS
/
/ 117570 6672 SELECT CARD READER AND SKIP IF READY
/ 117571 5370 JMP .-1
/ 117572 6631 SKIP ON DATA READY
/ 117573 5372 JMP .-1
/ 117574 6634 READ DATA BINARY
/ 117575 3270 DCA 7470
/ 117576 2375 ISZ .-1
/ 117577 5372 JMP 7572
/RIM LOADER FOR LOW SPEED PAPER TAPE IS
/ 117756 6032 /CLEAR KEYBOARD FLAG & ADVANCE READER
/ 117757 6031 /SKIP ON KEYBOARD FLAG
/ 117760 5357 /JMP .-1
/ 117761 6036 /READ KEYBOARD BUFFER, CLEAR FLAG
/ 117762 7106 /CLL RTL
/ 117763 7006 /RTL
/ 117764 7510 /SPA
/ 117765 5357 /JMP 117757 - SKIP LEADER, TRAILER
/ 117766 7006 /RTL
/ 117767 6031 /SKIP ON KEYBOARD FLAG
/ 117770 5367 /JMP .-1
/ 117771 6034 /READ KEYBOARD STATIC
/ 117772 7420 /SNL
/ 117773 3776 /DCA @117776
/ 117774 3376 /DCA 1176
/ 117775 5356 /JMP 117756
/RIM LOADER FOR HIGH SPEED PAPER TAPE IS
/ 117756 6014 /READER FETCH CHARACTER
/ 117757 6011 /SKIP ON READER FLAG
/ 117760 5357 /JMP .-1
/ 117761 6016 /READ READER BUFFER, AND FETCH NEW CHARACTER
/ 117762 7106 /CLL RTL
/ 117763 7006 /RTL
/ 117764 7510 /SPA
/ 117765 5374 /JMP 117774 - SKIP LEADER, TRAILER
/ 117766 7006 /RTL
/ 117767 6011 /SKIP ON READER FLAG
/ 117770 5367 /JMP .-1
/ 117771 6016 /READ READER STATIC
/ 117772 7420 /SNL
/ 117773 3776 /DCA @117776
/ 117774 3376 /DCA 1176
/ 117775 5357 /JMP 117757
/CODING CONVENTIONS
/
/ 1.) THE FIRST 3 CHARS OF A SYMBOL INDICATE WHEN THE LABEL IS USED
/ CLKXXX IS USED AT CLOCK LEVEL(I.E. EVERYTIME CLOCK TICKS)
/ INIXXX IS USED AT INITIALIZATION TIME.
/ INTXXX IS USED AT INTERRUPT LEVEL
/ IXXXXX IS USED AT INTERRUPT LEVEL
/ DEVXXX IS USED TO REFERENCE DATA IN DEVICE BLOCK
/ LDBXXX IS USED FOR A LDB ADDRESS
/ NLXXXX IS USED FOR A NUMERICAL LOAD INSTRUCTION
/
/ 2.) INTERRUPTS ALWAYS SAVE THE AC(BUT NOT THE LINK)
/ INTERRUPTS DO NOT CHANGE OR CHECK INSTRUCTION OR DATA FIELD
/ THE NORMAL INSTRUCTION FIELD IS 0; THE NORMAL DATA FIELD IS
/ THE CHUNK FIELD(USUALLY 1)
/
/ 3.) INSTRUCTIONS WHICH ARE CHANGED ARE FLAGED WITH ######## RH SIDE
/DEFINE CHAIN FOR INTERRUPTS & ONCE/TICK CODE
/
/ EVERY DEVICE IS TO HAVE A 3 LETTER MNEMNOIC "XYZ"
/
/ LABEL TO TEST FOR INTERUPTS FOR DEVICE IS INTXXX
/ WHEN TEST FAILS WILL BRANCH TO INTXY9
/
/ LABEL TO BRANCH TO ONCE / SECOND IS CLKXYZ
/ WHEN FINISHED WILL BRANCH TO CLKXY9
/ FOLLOWING ARE LABEL DEFINITIONS(MUST BE IN INCREASING PRIORITY):
IFDEF LOOP < /THIS IS ASSEMBLED ONLY FOR PASS 2
INTMO9=INTMEM
INTPL9=INTMOD
CLKPL9=LOOP /END OF CLOCK CHAIN
IFNDEF INTPLT < INTPLT=INTPL9
CLKPLT=CLKPL9
>/END OF IFNDEF INTPLT
INTPP9=INTPLT
CLKPP9=CLKPLT
IFNDEF INTPTP < INTPTP=INTPP9
CLKPTP=CLKPP9
>/END OF IFNDEF INTPTP
INTPR9=INTPTP
CLKPR9=CLKPTP
IFNDEF INTPTR < INTPTR=INTPR9
CLKPTR=CLKPR9
>/END OF IFNDEF INTPTR
INTCT9=INTPTR
CLKCT9=CLKPTR
INTCL9=INTCTY
INTLP9=INTCLK
CLKLP9=CLKPTR /NO SPECIAL CLOCK CODE FOR CTY
IFNDEF INTLPT < INTLPT=INTLP9
CLKLPT=CLKLP9
>/END OF IFNDEF INTLPT
INTTY9=INTLPT
CLKTY9=CLKLPT
IFNDEF INTTTY <INTTTY=INTTY9>
INTCD9=INTTTY
CLKCD9=CLKTTY
IFNDEF INTCDR < INTCDR=INTCD9
CLKCDR=CLKCD99
>/END OF IFNDEF INTCDR
INTDP9=INTCDR
SCHAIN=INTDPX /BEGIN SKIP CHAIN WITH SYNCHRONOUS INTERRUPTS
>/END OF IFDEF LOOP
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** DEVICE BLOCK DESCRIPTION ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/DEFINITIONS OF DATA IN DEVICE BLOCK
/ ORDER IS IMPORTANT SO BE CAREFUL IF U CHANGE THEM
DEFINE X Q QQ <XLIST;QQ=QQ+1;XLIST
Q=QQ-1>/END OF DEFINE X
DDBSIZ=-3
/DEVICE RESTRICTED NODE NUMBER (NEGATIVE OF NUMBER OF
/ONLY NODE ALLOWED TO CONNECT TO DEVICE. 0 MEANS ANY NODE
/MAY CONNECT
X DEVRNN,DDBSIZ
/DEVICE CHUNK IN USE COUNT (USED BY OUTPUT DEVICES)
/ SET TO MINUS NUMBER OF CHUNKS ALLOWED TO BE TIED UP BY DEVICE
X DEVCHK,DDBSIZ
/DEVICE NUMBER (OCCUPIES WORD BEFORE DDB) - 0 EXCEPT FOR TTY'S
X DEVNUM,DDBSIZ
/DEVICE ID # FOR INPUT - LH IS OBJECT TYPE, RH IS CONNECT NUMBER
X DEVSID,DDBSIZ
/POINTER TO CURRENT OUTPUT CHAR
X DEVOAD,DDBSIZ
/POINTER TO LAST OUTPUT CHUNK
X DEVOLC,DDBSIZ
/DEVICE STATUS - FOR ALL DEVICES
X DEVSTS,DDBSIZ
/ 4000 DEVICE ACTIVE(NOT SET FOR TTY INPUT)
CONBIT=2000 / 2000 DEVICE IS CONNECTED
/ 1000 NEED TO SEND A CONNECT CONFIRM (IF 2000 BIT ON)
/ OR A DISCONNECT (IF 2000 BIT OFF)
OUTBIT=0100 / 0100 DEVICE IS OUTPUT(I.E. NEEDS TO SEND DATA REQUESTS)
TTYBIT=0040 / 0040 DEVICE IS A TTY
IRMBIT=0002 / 0002 IRMA BIT
STSBIT=0001 / 0001 MEANS SEND DEVICE STATUS
/DEVICE DATA REQUESTS
X DEVDRQ,DDBSIZ
/DDCMP DEVICE STATUS
X DEVDDC,DDBSIZ
/PRIMARY BUFFER ADR
X DEVBF1,DDBSIZ
/SECONDARY BUFFER ADR
X DEVBF2,DDBSIZ
/DEVICE INPUT CHAR ADR
X DEVIAD,DDBSIZ
X DEVIFC,DDBSIZ
/TIMER FOR DEVICE
X DEVTIM,DDBSIZ
/DDB LINK
X DEVLNK,DDBSIZ
/DEFINITIONS OF WORDS ONLY IN TTY DEVICE BLOCKS
LDBSIZ=DDBSIZ
/TTY ADDRESS
X LDBADR,LDBSIZ
/ HDW ADR FOR LINE
/TTY OUTPUT COLUMN - CHANGES AT INTERRUPT LEVEL
X LDBCOL,LDBSIZ
/TTY CARRIAGE WIDTH
X LDBWID,LDBSIZ
/TTY XOF POINTER - CHANGES AT INTERRUPT LEVEL
X LDBXPT,LDBSIZ
/TTY FILL POINTER - CHANGES AT INTERRUPT LEVEL
X LDBFPT,LDBSIZ
/CHAR TO TYPE NEXT - CHANGES AT INTERRUPT LEVEL
X LDBCHR,LDBSIZ
/POINTER TO LAST INPUT CHAR - CHANGES AT INTERRUPT LEVEL
X LDBIPT,LDBSIZ
/TTY ECHO PIPELINE MARKER
X LDBEPL,LDBSIZ
/TTY FILL COUNTS
X LDBFIL,LDBSIZ
LDBSIZ=LDBSIZ+5
/DEFINE OPCODES WHICH PAL10 DOESN'T KNOW ABOUT
IFZERO PDP8E <
SKON=6000 /SKIP IF INTERRUPTS ARE ON
GTF=6004 /READ MACHINE STATE INTO AC
CAF=6007 /CLEAR ALL FLAGS
MQL=7421 /MQ LOAD = AC TO MQ, AC CLEARED
MQA=7501 /MQ ORED INTO AC
SWP=7521 /SWAP AC AND MQ
CAM=7621 /CLEAR AC AND MQ
>/END OF IFZERO PDP8E
BSW=7002 /BYTE SWAP ON 8E
NEGATE=CML CMA IAC /NEGATE AC & LINK
NL0=CLA CLL /LOAD AC& LINK WITH ZERO
NL1=CLA CLL IAC /LOAD AC & LINK WITH 1
NL2=CLA CLL IAC RAL
NL3=CLA CLL CML IAC RAL
NL4=CLA CLL IAC RTL
NL6=CLA CLL CML IAC RTL
NL2000=CLL CLA CML RTR
NL3777=CLL CLA CMA RAR
NL4000=CLL CLA CML RAR
NL6000=CLL CLA CML IAC RTR
NL7775=CLL CLA CMA RTL
NL7776=CLL CLA CMA RAL
NL7777=CLL CLA CMA
NLM1=CLL CLA CML CMA /LOAD -1
NLM2=NL7776 /LOAD -2
NLM3=NL7775 /LOAD -3
DEFINE NLOAD X <XLIST
Z=7402
IFZERO X < Z=CLL CLA >
IFZERO X-1 < Z=CLL CLA IAC >
IFZERO X-2 < Z=CLL CLA IAC RAL >
IFZERO X-3 < Z=CLL CLA IAC CML RAL >
IFZERO X-4 < Z=CLL CLA IAC RTL >
IFZERO X-6 < Z=CLL CLA IAC CML RTL >
IFZERO X-2000 < Z=CLL CLA CML RTR >
IFZERO X-3777 < Z=CLL CLA CMA RAR >
IFZERO X-4000 < Z=CLL CLA CML RAR >
IFZERO X-5777 < Z=CLL CLA CMA RTR >
IFZERO X-6000 < Z=CLL CLA CML IAC RTR >
IFZERO X-7775 < Z=CLL CLA CMA RTL >
IFZERO X-7776 < Z=CLL CLA CMA RAL >
IFZERO X-7777 < Z=CLL CLA CML CMA >
IFZERO Z-7402 < ***** BUM NLOAD CALL >
XLIST; Z >/END OF DEFINE NLOAD
/MACRO DEFINITIONS
IFNZRO FTBIGL <
DEFINE LISTOG Q < >
DEFINE XISTOG Q < >
>/END OF IFNZRO FTBIGL
IFZERO FTBIGL <
DEFINE LISTOG Q <IFZERO Q < XLIST > >
DEFINE XISTOG Q <IFNZRO Q < XLIST > >
>/END OF IFZERO FTBIGL
DEFINE CREF X <XLIST;Z=X;XLIST>
DEFINE XOR Q <
TAD INTMP1
AND Q
CMA IAC
CLL RAL
TAD INTMP1
TAD Q
DCA Q
>/END OF DEFINE XOR
DEFINE BLOCK Q <XLIST
*.+Q
XLIST >/END OF DEFINE BLOCK
DEFINE REPEAT Q <XLIST
IFNZRO Z <XLIST
Q
XLIST
Z=Z-1
>/END OF IFNZRO Z
XLIST>/END OF DEFINE REPEAT
DEFINE HLT < XLIST
JMS I [DMPTRP
XLIST >/END OF DEFINE HLT
IFNZRO CNKFLD <
Z=CNKFLD^10
CDFCNK=CDF Z
CIFCNK=CIF Z
>/END OF IFNZRO CNKFLD
IFZERO CNKFLD <
DEFINE CDFCNK <>
DEFINE CIFCNK <>
>/END OF IFZERO CNKFLD
CDFTRC=CDFCNK
CDFINS=CDF 0
CIFINS=CIF 0
/CTY IOTS
IFZERO PDP8E <
CTYKCF=6030 /CLEAR KEYBOARD FLAG (PDP8E)
CTYTFL=6040 /SET TELEPRINTER FLAG (PDP8E)
CTYTSK=6045 /SKIP ON PRINTER OR KEYBOARD FLAG (PDP8E)
>/END OF IFZERO PDP8E
CTYKSF=6031 /SKIP ON KEYBOARD FLAG
CTYKCC=6032 /CLEAR KEYBOARD FLAG
CTYKRS=6034 /READ KEYBOARD STATIC
CTYKRB=6036 /READ KEYBOARD DYNAMIC(KRS+KCC)
CTYTSF=6041 /SKIP ON TELEPRINTER FLAG
CTYTCF=6042 /CLEAR TELEPRINTER FLAG
CTYTPC=6044 /LOAD TELEPRINTER AND PRINT
CTYTLS=6046 /LOAD TELEPRINTER SEQUENCE(TCF + TPC)
/CLOCK IOTS - KW8/I OR DK8-EA
/ KW8/I TICKS 60(50) TIMES PER SECOND
/ DK8E TICKS 120(100) TIMES PER SECOND SO EVERY OTHER TICK IS IGNORED
IFZERO PDP8I < CLKECI=6137 /CLEAR ALL CONTROL FLIP FLOPS>
IFZERO PDP8E < CLKECI=6131 /CLEAR ALL CONTROL FLIP FLOPS>
CLKSCF=6133 /SKIP ON CLOCK FLAG(AND CLEAR IT)
/MEMORY PARITY IOTS
MEMSMP=6101 /SKIP ON NO MEMORY PARITY ERROR
MEMCMP=6104 /CLEAR MEMORY PARITY ERROR FLAG
MEMSPO=SKP /IN CASE NOT DEFINED BELOW
IFZERO PDP8E <
MEMEPI=6103 /ENABLE MEMORY PARITY INTERRUPTS
MEMSPO=6107 /SKIP IF MEMORY PARITY OPTION PRESENT
>/END OF NEW IOT'S FOR 8E
IFNZRO CDRN <
/CDR IOTS
CDRSF=6631 /SKIP ON DATA READY
CDRCRB=6634 /READ CARD BINARY
CDRSD=6671 /SKIP ON CARD DONE FLAG
CDRCSE=6672 /SELECT CARD READER AND SKIP IF READY
CDRCRD=6674 /CLEAR CARD DONE FLAG
>/END OF IFNZRO CDRN
IFNZRO LPTN <
/LINE PRINTER IOT'S - LS8E & LE8=LP08
LPTSTF=6660 /SET THE FLAG (LS8E ONLY)
LPTSKF=6661 /SKIP ON FLAG
LPTCLF=6662 /CLEAR FLAG
LPTSKE=6663 /SKIP ON NOT READY
/ LPT=6664 /LOAD PRINT BUFFER
LPTSIE=6665 /SET PI ENABLE (LE8 ONLY)
/ IF AC11=1 SET PI ENABLE (LS8E ONLY)
/ IF AC11=0 CLEAR PI ENABLE (LS8E ONLY)
LPTSTB=6666 /LOAD DATA & CLEAR FLAG
LPTCIE=6667 /CLEAR PI ENABLE (LE8 ONLY)
>/END OF IFNZRO LPTN
LISTOG TTYN
IFNZRO TTYN <
LISTOG FTDC02F
IFNZRO FTDC02F <
/FOR DCMTPF & DCMTKF AC 8 SPECIFIES GROUP 0
/ AC 9 SPECIFIES GROUP 1
/ AC 10 SPECIFIES GROUP 2
/ AC 11 SPECIFIES GROUP 3
DCMTPF=6113 /READ GROUP'S TRANSMITTER FLAGS INTO AC 0-7
DCMTKF=6123 /READ GROUP'S RECEIVER FLAGS INTO AC 0-7
DCMINT=6115 /ENABLE INTERRUPTS
DCMINS=6125 /SKIP IN INTERRUPT REQUEST ACTIVE
DCMTON=6117 /SELECT STATION(AC0-7) & GROUP(AC8-11)
DCMKSF=6111 /SKIP ON KEYBOARD FLAG
DCMKCC=6112 /CLEAR KEYBOARD FLAG
DCMKRS=6114 /OR CHAR INTO AC4-11
DCMTSF=6121 /SKIP ON TRANSMIT FLAG
DCMTCF=6122 /CLEAR TRANSMIT FLAG
DCMTPC=6124 /TRANSMIT A CHAR
>/END OF DC02F IOTS
LISTOG 0
IFZERO FTDC02F <
T00KSF=6141
T01KSF=6161
T02KSF=6301
T03KSF=6321
T04KSF=6361
T05KSF=6511
T06KSF=6601
T07KSF=6641
T10KSF=6051
T11KSF=6331
T12KSF=6521
T13KSF=6541
T14KSF=6561
T15KSF=6461
T16KSF=6441
T17KSF=6061
T00TSF=6151
T01TSF=6171
T02TSF=6311
T03TSF=6351
T04TSF=6371
T05TSF=6621
T06TSF=6611
T07TSF=6651
T10TSF=6071
T11TSF=6341
T12TSF=6531
T13TSF=6551
T14TSF=6571
T15TSF=6471
T16TSF=6451
T17TSF=6121
>/END OF KL8E IOTS
XISTOG FTDC02F
>/END OF IFNZRO TTYN
LISTOG TTYN
Z=PTRN+PTPN+PLTN
LISTOG Z
IFZERO PDP8E <
PTRPE=6010 /ENABLE READER/PUNCH INTERRUPT ENABLE
PTPCE=6020 /CLEAR READER/PUNCH INTERRUPT ENABLE
>/END OF IFZERO PDP8E
IFNZRO PTRN <
/HIGH SPEED PAPER TAPE READER IOTS - PC8-E OR
PTRSF=6011 /SKIP ON READER FLAG
PTRRB=6012 /OR READER BUFFER INTO AC & CLEAR FLAG
PTRFC=6014 /READER FETCH CHARACTER - GET NEXT CHAR
>/END OF IFNZRO PTRN
IFNZRO PTPN <
/HIGH SPEED PAPER TAPE PUNCH IOTS
PTPSF=6021 /SKIP ON PUNCH FLAG
PTPCF=6022 /CLEAR PUNCH FLAG
PTPPC=6024 /PUNCH CHARACTER
PTPLS=6026 /LOAD PUNCH BUFFER SEQUENCE
>/END OF IFNZRO PTPN
IFNZRO PLTN < /PLOTTER IOT'S - XY8/E
PLTCEN=6500 /CLEAR INTERRUPT ENABLE
PLTSKF=6501 /SKIP ON PLOTTER FLAG
PLTCLF=6502 /CLEAR PLOTTER FLAG
PLTPUP=6503 /PEN UP
PLTLLR=6504 /LOAD DIRECTION REGISTER
PLTPDN=6505 /PEN DOWN
PLTLCF=6506 /LOAD DIRECTION REGISTER AND CLEAR FLG
PLTSEN=6507 /SET INTERRUPT ENABLE
>/END OF IFNZRO PLTN
LISTOG Z
LISTOG FTDP01
IFNZRO FTDP01 < /IOTS FOR DP01
DPTAC=6301 /TRANSMIT A CHARACTER
DPCTF=6302 /CLEAR TRANSMIT FLAG & SKIP IF TRANSMIT ACTIVE FLAG SET
DPCIM=6304 /CLEAR IDLE MODE
DPSTF=6311 /SKIP ON TRANSMIT FLAG NOT SET
DPSIM=6314 /SET IDLE MODE
DPSRF=6351 /SKIP ON RECEIVE FLAG NOT SET
DPRRB=6312 /READ RECEIVE BUFFER(AND CLEAR FLAG)
DPSEF=6321 /SKIP ON RECEIVE END FLAG
DPCEF=6322 /CLEAR END FLAG
DPSRE=6324 /SET RING ENABLE
DPCRE=6344 /CLEAR RING ENABLE
DPSRI=6331 /SKIP ON RING INDICATOR
DPCRF=6332 /CLEAR RING FLAG
DPSTR=6334 /SET TERMINAL READY
DPCTR=6342 /CLEAR TERMINAL READY
DPSSR=6341 /SKIP ON DATASET READY
DPCRA=6352 /CLEAR RECEIVER ACTIVE
>/END OF IFNZRO FTDP01
LISTOG 0
IFZERO FTDP01 < /IOTS FOR DP8E SYNCHRONOUS LINE INTERFACE
DPSGTT=6405 /TRANSMIT GO
DPSGRR=6404 /RECEIVE GO
DPSSCD=6400 /SKIP IF CHAR DETECTED
DPSCSD=6406 /CLEAR SYNC DETECT
DPSSRO=6402 /SKIP IF RECEIVE WORD COUNT OVERFLOW
DPSSTO=6403 /SKIP IF TRANSMIT WORD COUNT OVERFLOWS
DPSCSI=6401 /CLEAR SYNCHRONOUS INTERFACE
DPSRTA=6407 /READ TRANSFER ADDRESS REGISTER
DPSLCC=6412 /LOAD CONTROL
DPSSRG=6410 /SKIP IF RING FLAG
DPSSCA=6411 /SKIP IF CARRIER/AGC FLAG
DPSRS2=6414 /READ STATUS 2
/ AC00 CARRIER/AGC
/ AC01 REQUEST TO SEND
/ AC02 TERMINAL READY
/ AC03 CLEAR TO SEND
/ AC04 TEMA 0(TRANSMIT EXTENDED MEMORY ADDRESS)
/ AC05 TEMA 1
/ AC06 TEMA 2
/ AC07 RECEIVE DATA(INV)
DPSRS1=6415 /READ STATUS 1
/ AC00 R-RQST RECEIVE AND TRANSMIT
/ AC01 T-RQST BREAK REQUESTS
/ AC02 SYNC 2 RECEIVED SYNC
/ AC03 SYNC 1 CHARS
/ AC04 REMA 0
/ AC05 REMA 1
/ AC06 REMA 2
/ AC07 MODEM READY
DPSLFL=6413 /LOAD FIELD
DPSSBE=6416 /SKIP ON BUS ERROR
DPSRCD=6417 /READ CHAR DETECTED(IF AC0=0)
/FOLLOWING ARE IOTS FOR DP8-EP(KG8-EA) REDUNDANCY CHECK OPTION
/ 6110 /TEST VRC AND SKIP
BCCRDH=6111 /READ HIGH ORDER PORTION OF BCC INTO AC
BCCRDL=6112 /READ LOW ORDER PORTION OF BCC INTO AC
/ BCCVRC=6113 /COMPUTE VRC CHARACTER
BCCGEN=6114 /GENERATE BCC
BCCLCL=6115 /LOAD CONTROL REGISTER FROM AC
/ AC05=1: CRC; AC05=0: LRC
/ AC6-8=0: 16BIT BCC
/ AC6-8=1: 12BIT BCC
/ AC6-8=2: 8BIT BCC
/ AC6-8=3: 7BIT BCC
/ AC6-8=4: 6BIT BCC
/ AC9=0: PARITY TO AC4; AC9=1:PARITY TO AC11
/ AC10=1: 6114 ALSO CAUSES 6113
/ AC11=1: 6114 ALSO CAUSES 6110
BCCCLR=6116 /CLEAR ACCUMULATION
/ 6117 /MAINTENANCE TEST CLOCK
>/END OF IFZERO FTDP01
LISTOG FTDP8E
/PAGE 0 INSTRUCTIONS
FIELD 0
INTRAP=0 /TRAP TO FIELD 0 LOC 0 ON AN INTERRUPT
*1
DCA INSVAC /SAVE AC
CDFCNK /INTERRUPTS SET DF = 0
IFNZRO CDRN <
CDRSF /SKIP ON CARD READER COLUMN READY
JMP SCHAIN /NOT CARD READ - SO GO FIND WHAT
JMP ICDRD0 /GO READ COLUMN
>/END OF IFNZRO CDRN
IFZERO CDRN <
JMP SCHAIN /GO FIND WHAT INTERRUPTED
>/END OF IFZERO CDRN
INSVAC, 0 /SAVE INTERRUPTED AC HERE
INRCPV, 0 /PIVOT FOR DP01 INPUT
/AUTOINDEX REGISTERS
*10
IFNZRO FTDEBUG <
BUGGER, 0
>/END OF IFNZRO FTDEBUG
TIQPTR, 0 /POINTER TO PUT TTY CHARS INTO THE INPUT QUEUE
TIQTKR, 0 /POINTER TO TAKE TTY CHARS OUT OF INPUT QUEUE
AUTO1, 0 /MISC AUTOINDEXER FOR NON-INTERRUPT LEVEL CODE
IAUTO1, 0 /MISC AUTOINDEXER FOR INTERRUPT LEVEL CODE
IAUTO2, 0 / DITTO
INTDIS, NL0 /CLEAR AC & LINK
TAD INSVAC /RESTORE AC
ION
JMP I INTRAP /RETURN TO INTERRUPTED PROCESS
FIRFRE, 0 /POINTER TO FIRST FREE CHUNK
FRECNT, 0 /COUNT OF FREE CHUNKS
FIRADR, FIRCNK /ADDRESS OF FIRST FREE CHUNK ########
TEMP1, 0 /TEMPORARY LOCATION FOR NONINTERRUPT LEVEL CODE
TEMP2, 0
TEMP3, 0
TEMP4, 0
TEMP5, 0
TEMP6, 0
TEMP7, 0
TEMP8, 0
TEMPA, 0 /ADDITIONAL TEMPS
TEMPB, 0
TEMPC, 0
TEMPD, 0
INTMP1, 0 /TEMPORARY LOCATION FOR INTERRUPT CODE
INTMP2, 0 / DITTO
INTMP3, 0 / DITTO
INTMP4, 0 / DITTO
INTMP5, 0 / DITTO
INTMP6, 0 / DITTO
INTMP7, 0 / DITTO
INTDDB, 0 /ADDRESS OF CURRENT DEVICE BLOCK
IDBSTS, 0 /ADDRESS OF DEVSTS FOR INTDDB
DDB, 0 /ADDRESS OF CURRENT DEVICE BLOCK
DDBSTS, 0 /ADR OF DEVSTS
ERRFLG, 0 /WHEN AN ERROR OCCURS PUT ADR OF MSG HERE
SECFLG, 0 /SET NONZERO ONCE PER SECOND
CLKFLG, 0 /SET NONZERO WHEN CLOCK GOES OFF
INTCNT, 0 /WATCHDOG FOR UNRECOGNIZED INTERRUPTS
WRKREQ, 0 /-1 WHEN INTERRUPT LEVEL HAS LEFT WORK FOR NON-INTERRUPT LEVEL
IFNZRO CDRN <
CDREXT, 0 /**DECSYNC**SLOT TO PUT TRAILING PARTS OF CARDS
/**DDCMP**ADR OF COUNT FIELD
CDRNXT, 0 /POINTER TO BEGINING OF CURRENT CARD
CDRADR, 0 /POINTER INTO STRING BEING FILLED
CDCCNT, 0 /COMPRRESED CHAR COUNT
CDCCHR, 0 /LAST CARD COLUMN
>/END OF IFNZRO CDRN
IFNZRO LPTN <
LPTCCH, 0 /CHAR WE ARE UNCOMPRESSING
LPTCCN, 0 /COUNT OF CHARS TO UNCOMPRESS
LPTCNT, 0 /COUNT OF CHARS IN CHUNK STRING
LPTCOL, 0 /CURRENT OUTPUT COLUMN
LPTOCH, 0 /CHAR TO PRINT LATER
LPTZCT, 0 /REP COUNT AFTER TIMEOUT
LPTOPV, 0 /LAST VALUE OF PIVOT
LPTCHR, 0 /LAST CHAR OUTPUT TO LPT
LPTRCT, 0 /REPETITION COUNT FOR LPT CHARS(MAKES TABS ETC)
LPTLNE, 0 /INDEX TO LPTVFU
LPTHNG, LPTHN1 /PUT OUT A CR TO LEFT JUSTIFY THE PRINTER
LPTHN2 /PUT OUT SPACES TO GET INTO RIGHT COLUMN
>/END OF IFNZRO LPTN
IFNZRO TTYN <
IFNZRO FTDC02F <
DEFINE X Q <
XLIST
ZZ=Z&0070
IFNZRO ZZ <ZZ=7760> /MASK FOR 8 LINES
IFZERO Z <ZZ=0000>
Z=Z-1
IFZERO Z <ZZ=4000>
Z=Z-1
IFZERO Z <ZZ=6000>
Z=Z-1
IFZERO Z <ZZ=7000>
Z=Z-1
IFZERO Z <ZZ=7400>
Z=Z-1
IFZERO Z <ZZ=7600>
Z=Z-1
IFZERO Z <ZZ=7700>
Z=Z-1
IFZERO Z <ZZ=7740>
Z=Z-1
IFZERO Z <ZZ=7760>
XLIST
ZZ+Q
XLIST
ZZ=Z&4000
IFNZRO ZZ <Z=0> /IF NEGATIVE HAVE DONE ENOUGH
XLIST
>/END OF DEFINITION OF X
Z=TTYN /INITIALIZE COUNTER
DC1MSK, X 10
IFNZRO Z <
DC2MSK, X 4
IFNZRO Z <
DC3MSK, X 2
IFNZRO Z <
DC4MSK, X 1
>>>/END OF IFNZRO Z
>/END OF IFNZRO FTDC02F
IFZERO FTDC02F <
>/END OF IFZERO DC02F
>/END OF IFNZRO TTYN
RCVTKR, 0 /RECEIVED MESSAGE TAKER
RCVPTR, 0 /RECEIVED MESSAGE PUTTER
STACKF, 0 /-2 MEANS SENDING STARTS
/ -1 MEANS NEED TO SEND A STACK
/ 0 MEANS DOWN(NO ICM)
/ 1 MEANS HAVE RECEIVED ICM
NAKFLG, 0 /IF NONZERO REASON TO SEND A NAK MESSAGE
CRC1, 0 /FIRST HALF OF CRC-16
CRC2, 0 /2ND HALF OF CRC-16
RECVOK, 0 /LAST MESSAGE # RECEIVED OK
/ SIGN BIT MEANS SEND ACK
REPTCK, 0 /TIMER FOR REPS
/ 0 MEANS SEND A REP
T10FLG, 0 /TRANSMITTER STATE
/ -2 MESSAGE READY TO GO
/ -1 ACTIVE
/ 0 IDLE
/ +1 SYNCH
CNTPNT, 0 /POINTER TO CHUNK COUNTER
T10AKR, 0 /POINTER TO LAST ACKED TO 10 REQUEST
/ T10AKR, T10TKR, & T10PTR ARE ALWAYS LEFT
/ SO THEY CAN BE USED WITHOUT CHECKING 1ST
T10LAN, 0 /LAST MESSAGE # TO 10 ACKED BY 10
T10TKR, 0 /POINTER TO TAKE TO 10 REQUESTS FROM QUEUE
T10HSN, 0 /HIGHEST MSG # SENT TO 10
T10PTR, 0 /POINTER TO PUT TO 10 REQUESTS INTO QUEUE
T10NCA, 0 /ADR OF NEXT BUFFER TO SEND
T10NWC, 0 /WC FOR NEXT BUFFER TO SEND
T10CLK, 0 /ISZ'ED BY CLOCK INTERRUPTS
F10TWC, 0 /TOTAL WC(POSITIVE) FOR DATA IN NUMBERED MSGS
RSNA, 0 /STORE SNA FIELD
RNCT, 0 /STORE NCT FIELD
RNOD, 0 /NODE NUMBER OF OTHER END OF LINE
DISSNA, 0 /FOR DISCONNECT
DISSLA, 0
DISREA, 0
CONSNA, 0 /INDICATE WE NEED TO SEND CONFIG
DMPCHR, DMPCTY /WORD SET BY EITHER DMP000 OR CTYEXC
IFZERO FTDP01 < *7720 >
F10TCH, ZBLOCK 4 /4 SPECIAL CHARS TO WATCH FOR ON INPUT
/ SET UP BY SYSCHK
F10WC, 0 /WORD COUNT FOR MESSAGES FROM 10
F10CA, 0 /CURRENT ADDRESS FOR MESSAGES FROM 10
IFZERO FTDP01 < 0 >/LOCATION USED BY HDW
T10WC, 0 /WORD COUNT FOR MESSAGES TO 10
T10CA, 0 /CURRENT ADDRESS FOR MESSAGES TO 10
IFZERO FTDP01 < 0 >/LOCATION USED BY HDW
/ALL GOOD PDP8 PROGRAMS BEGIN AT ADDRESS 200
*200
DC72, JMP INIALL
/HERE TO DUMP SYSTEM ONTO LPT
DUMP, 7402 /FOR COMPATIBILITY
VEDIT /SOFTWARE VERSION NUMBER
DMPAC, 0 /AC WHEN AUTODUMP BEGAN
DMPLNK, 0 /FOR 8I'S THIS IS LINK
/ FOR 8E'S THIS IS LINK AND OTHER FLAGS
DMPTRP, 0 /JMS HERE FOR AN AUTODUMP
DCA DMPAC /SAVE AC
IFZERO PDP8I < RAR > /ROTATE LINK INTO AC
IFZERO PDP8E < GTF > /LOAD FLAGS(AND LINK) INTO AC
DCA DMPLNK /SAVE LINK
IFZERO PDP8I < IOF > /PREVENT ANY ADDITIONAL INTERRUPTS
IFZERO PDP8E < CAF > /STOP THE WORLD
TAD (DMPMSG-1 /TELL OPR WE ARE DIEING
JMS CTYEXC
TAD DMPTRP
JMS DMPWDO
7402 /HALT
DMPWDO, 0
DCA DMPWRD /SAVE WORD TO DUMP
JMS DMPWDC
JMS DMPWDC
JMS DMPWDC
JMS DMPWDC
JMP I DMPWDO
DMPWDC, 0
TAD DMPWRD
RTL
RAL
DCA DMPWRD
TAD DMPWRD
RAL
AND [0007
TAD [0060
JMS I DMPCHR
JMP I DMPWDC
DMPTAB, 0
IFNZRO LPTN <
JMS DMPSPC
JMS DMPSPC
>/END OF IFNZRO LPTN
JMS DMPSPC
JMS DMPSPC
JMP I DMPTAB
DMPSPC, 0 /HERE TO PRINT A SPACE
TAD [0040
JMS I DMPCHR
JMP I DMPSPC
DMPCRL, 0
TAD [0015 /CARRIAGE RETURN
JMS I DMPCHR / WE NEED THIS FOR CENTRONICS
TAD [0012 /LINE FEED
JMS I DMPCHR
TAD [0012
JMS I DMPCHR
JMP I DMPCRL
DMPWRD, 0
/HERE TO TYPE A MESSAGE ON CTY
/ ONLY USED WHEN STATION NOT RUNNING
CTYEXC, 0
DCA DMPWRD
TAD (DMPCTY
DCA DMPCHR
CDFCNK
CTYEX3, ISZ DMPWRD
TAD I DMPWRD
JMS I DMPCHR
TAD I DMPWRD /GET CHAR AGAIN
SMA CLA /ALL DONE ?
JMP CTYEX3 /NO
CDFINS
JMP I CTYEXC
DMPCTY, 0
CTYTLS
CTYTSF
JMP .-1
NL0
JMP I DMPCTY
DOWN1, /CONTINUATION OF DOWN ROUTINE
DCA DDB /SAVE DDB ADDRESS
TAD (DEVSTS /DISPLACEMENT
TAD DDB /MAKE ABSOLUTE
DCA DDBSTS
IOF
TAD I DDBSTS /GET STATUS
AND (0772 /TURN OFF ACTIVE,CONNECTED,NEED CONNECT CONFIRM,TABBING, AND SEND STATUS
DCA I DDBSTS /PUT IT BACK
ION /RESTORE INTERRUPTS
NLOAD DEVCHK /DEVCHK DISPLACEMENT
TAD DDB /MAKE ABSOLUTE
DCA TEMP2 /SAVE
NLOAD DEVOAD /POINTER TO OUTPUT
TAD DDB
DCA TEMP1 /SAVE ITS ADDRESS
JMS NEIFLB /FLUSH ANY OUTPUT
NLOAD DEVBF1 /POINT TO INPUT STRING
TAD DDB /MAKE ABSOLUTE
DCA TEMP1 /STORE
DCA TEMP2 /DO NOT COUNT CHUNKS
JMS NEIFLB /FLUSH INPUT
NLOAD DEVDRQ /POINT TO DATA REQUESTS
TAD DDB /MAKE ABSOLUTE
DCA TEMP1 /STORE ADDRESS
DCA I TEMP1 /CLEAR DATA REQUESTS
TAD TEMPB /GET SNATAB ENTRY
JMP DOWN2 /GO CLEAR OUT RCVDSP ENTRY
NEIFLB, 0 /SUBROUTINE TO FLUSH BUFFERS
/TEMP1 = WHERE TO START CHAIN
/TEMP2 = 0 OR WHERE TO INCREMENT CHUNK COUNT
IOF
TAD I TEMP1 /GET START OF CHAIN
SNA /SEE IF ANY
JMP NEIFLR /NONE, SO RETURN
NEIFL1, DCA TEMP3 /STORE ADDRESS
DCA I TEMP1 /CLEAR POINTER
DCA FREDCK /CLEAR COUNT
TAD TEMP3 /GET ADDRESS
AND [-CNKSIZ /MAKE SURE AT BEGINNING OF CHUNK
JMS FRECKS /FREE CHUNKS
TAD TEMP2 /COUNTER SPECIFIED?
SNA CLA /COUNTER SPECIFIED?
JMP NEIFLR /NO, RETURN
IOF
TAD FREDCK /COUNT OF CHUNKS FREED
NEGATE
TAD I TEMP2 /PREVIOUS COUNT
DCA I TEMP2 /STORE NEW ONE
NEIFLR, ION /RESTORE INTERRUPTS
JMP I NEIFLB /RETURN
PAGE
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** INITIALIZATION ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
INICNT, 0 /COUNTED EACH TIME STATION IS RESTARTED
/HERE TO RESTART PROGRAM
INIALL, IOF /DISABLE INTERRUPTS
NLM2
DCA STACKF /FLAG TO SEND A START
INISUM,
/HERE TO INITIALIZE SOME OF STATION STUFF
CDFCNK
ISZ INICNT /IF IT SKIPS WON'T MATTER BECAUSE NEXT INS
/ WILL BE A NOP
INICIF, CIFCNK / CHANGE INSTRUCTION FIELD ########
INIJMP, JMP I (SYSCHK /GO PERFORM SYSCHK ########
/ CHANGED TO CAF(OR 0) BY SYSCHK
IFZERO PDP8E <
MEMEPI /ENABLE MEMORY PARITY ERROR INTERRUPTS
>/END OF IFZERO PDP8E
/HERE TO INITIALIZE THE CLOCK
CLKECI /RESET CLOCK
/HERE TO INITIALIZE THE COMMUNICATIONS FLAGS
DCA REPTCK
/HERE TO INITIALIZE FROM 10 FLAGS
TAD (RCVQUE
DCA RCVPTR
TAD (RCVQUE
DCA RCVTKR
/HERE TO INITIALIZE TO 10 FLAGS
TAD (T10BF1
DCA T10AKR
DCA T10LAN /LAST ACKED POINTER
TAD (T10BF1
DCA T10TKR /LAST SENT POINTER
TAD (T10BF1+T10LEN
DCA T10PTR /HIGHEST SENT POINTER
NL1
DCA T10HSN /HIGHEST MSG# SENT
NL2 /FOR BCC
TAD I (NCLNID /GET NODE-ID MSG SIZE
NEGATE /MAKE ISZ COUNTER
DCA TEMP2 /SAVES COUNTER
TAD (NCLNID /POINT TO NODE ID MESSAGE
DCA IAUTO1 /SET UP POINTER TO MESSAGE
TAD (T10BF1+7
DCA AUTO1 /POINTER TO BUFFER
INIDD3, TAD I IAUTO1
DCA I AUTO1 /PUT NEXT CHAR INTO BLOCK
ISZ TEMP2
JMP INIDD3 /LOOP BACK FOR REST
TAD I (NCLNID /GET SIZE OF NODE-ID MSG
DCA I (T10BF1+1 /SET COUNT IN MSG
DCA I (T10BF1+2 /CLEAR HIGH ORDER COUNT
NL1
DCA I (T10BF1+4 /SET MESSAGE NUMBER
TAD (-DEVN
DCA TEMP1
TAD (RCVDSP
DCA AUTO1
TAD (CTRLTB-1
DCA IAUTO1
TAD (SNATAB-1 /POINT TO NODE TABLE
DCA IAUTO2 /PUT INTO AUTOINDEX REGISTER
INIDD4, TAD (RCVKRD /GET UNUSED DISPATCH ENTRY
DCA I AUTO1 /STORE AT RCVDSP
DCA I IAUTO1 /ZERO DDB FIELD
DCA I IAUTO2 /ZERO NODE FIELD
ISZ TEMP1 /UP COUNTER
JMP INIDD4 /CONTINUE IF NOT EXPIRED
JMP FUG /GO ON WITH INITIALIZATION
RCVNEI, /HERE WHEN WE RECEIVE NEIGHBORS MESSAGE
TAD RNOD /GET OUR NEIGHBOR
NEGATE
TAD RSNA /GET WHO SENT NEIGHBORS
SZA CLA /ONLY BELIEVE HIM
JMP RCVFLU /IGNORE OTHERS
NEIG0,
JMS GETCHR /GET NNM
JMP NEIG10 /NONE, SO DONE
NEGATE /GET NEGATIVE
DCA TEMPA /SAVE
TAD (SNATAB /POINT TO START OF NODE TABLE
DCA TEMPB /STORE
TAD (-DEVN /NUMBER OF ENTRIES
DCA TEMPC /STORE
NEIG1, /LOOP TO MARK NODES UP
TAD I TEMPB /GET NODE TABLE ENTRY
SNA /ONLY TEST ONES THAT ARE THERE
JMP NEIG3 /ADVANCE TO NEXT ENTRY IF NOT USED
TAD TEMPA /ADD THE ONE WE ARE CONSIDERING
SNA CLA /SKIP IF NOT THE SAME
JMP NEIG2 /MARK AS UP IF THE SAME
NEIG3, ISZ TEMPB /ADVANCE NODE TABLE POINTER
ISZ TEMPC /ADVANCE COUNTER
JMP NEIG1 /CONTINUE IF COUNT NOT EXHAUSTED
JMS GTCHR /GET LVL TO THROW AWAY
JMP NEIG0 /DO NEXT
NEIG2, NL4000 /GET BIT TO MARK NODE UP
TAD I TEMPB /GET TABLE ENTRY
DCA I TEMPB /STORE IT AGAIN WITH UP BIT ON
JMP NEIG3 /CONTINUE
NEIG10, /HERE AFTER ALL NODES MARKED AS UP
TAD (SNATAB /GET START OF NODE TABLE
DCA TEMPB /SAVE
TAD (-DEVN /GET NUMBER OF ENTRIES
DCA TEMPC /SAVE
NEIG11, /LOOP THROUGH TABLE
TAD I TEMPB /GET ENTRY
SMA SZA /EITHER 0 (NOT USED) OR MINUS (UP) IS OK
JMP DOWN /AC WILL BE ZERO WHEN ROUTINE JMPS TO NEIG13
NEIG13, AND (3777 /CLEAR UP BIT
DCA I TEMPB /STORE ENTRY BACK
NEIG12, ISZ TEMPB /ADVANCE TABLE POINTER
ISZ TEMPC /ADVANCE COUNTER
JMP NEIG11 /CONTINUE LOOP
/ IF WE WANT TO SEND CONFIGURATION, DO IT HERE
JMP RCVFLU /DONE WITH MESSAGE
DOWN, /HERE WHEN WE DETERMINE NODE HAS GONE DOWN
NL0 /CLEAR AC
TAD TEMPB /GET SNATAB ENTRY
TAD (CTRLTB-SNATAB /GET CORRESPONDING CTRLTB ENTRY
DCA DDB /STORE ADDRESS OF DDB
TAD I DDB /GET DDB
SNA /MAKE SURE THERE IS ONE
JMP NEIG12 /NO, MUST HAVE BEEN A DEVICE DISCONNECT
JMP DOWN1 /CONTINUE
PAGE
FUG,
/HERE TO INITIALIZE THE SYNCHRONOUS LINE
DCA INRCPV /MIGHT BE USEFUL ON A RESTART
JMS INISYN
JMP INIDP9
/HERE TO INITIALIZE THE SYNCHRONOUS INTERFACE WHEN STATION RESTARTS
/ AND ALSO HERE WHEN TRANSMITTER TIMES OUT
INISYN, 0
TAD (CTLSIZ-1 /POINT TO CHUNKS
TAD RCVPTR /POINT THIS MESSAGE
DCA TEMP1
TAD INRCPV /GET STATE OF RECEIVER
TAD (-INRC70 /CHECK TO SEE IF RECEIVING NUMBERED MESSAGE
SNA CLA /SKIP IN WE DON'T HAVE CHUNKS IN LIMBO
TAD I TEMP1 /GET ADR OF FIRST CHUNK
DCA TEMP1 /SAVE ADR OF FIRST CHUNK(OR ZERO)
IFZERO FTDP01 <
DPSCSI /CLEAR INTERFACE
Z=CNKFLD^1100
TAD (Z
DPSLFL /SET FIELD FOR RECEIVE AND XMT BUFFERS
TAD (5400-Z
DPSLCC /LOAD CONTROL REGISTER
NL0
>/END OF IFZERO FTDP01
TAD (SYNBUF-1 /STRING OF 4 SYNCHS
CDFINS /WC AND CA ARE IN FIRST FIELD
DCA I [T10CA
TAD (-4
DCA I [T10WC
NLM3
DCA T10CLK
JMS INRCID /SET RECEIVER TO IDLE MODE
/ AND SET DATA FIELD TO CHUNK FIELD
NL1
DCA T10FLG /TRANSMITTER IS TRYING TO SYNCH LINE
IFNZRO FTDP01 <
/HERE TO INITIALIZE DP01 ROUTINES
DPSTR /SET TERMINAL READY
TAD (SYN
DPTAC /START DP01
NL0
>/END OF IFNZRO FTDP01
IFZERO FTDP01 <
DPSGTT /TRANSMIT GO
DPSGRR /AND RECEIVE GO
>/END OF IFZERO FTDP01
TAD TEMP1 /GET CHUNK ADR TO FREE(IF ANY)
SZA
JMS FRECKS
JMP I INISYN
INIDP9,
/HERE TO INITIALIZE THE CHUNKS
DCA FIRFRE /NO FREE CHUNKS YET
DCA FRECNT /COUNT OF FREE CHUNKS
TAD FIRADR /GET FIRST CHUNK ADDRESS
DCA INTMP2
INICNK, TAD INTMP2
JMS IFRCNK /PUT CHUNK INTO FREE LIST
TAD INTMP2 /GET LAST CHUNK ADR
TAD [CNKSIZ /ADVANCE 1 CHUNK
DCA INTMP2 /SAVE NEW CHUNK ADR
TAD INTMP2
IFZERO PDP8I <Z=-CNKSIZ&7570> /DON'T OVERWRITE CARD LOADER
IFZERO PDP8E <Z=7600> /DON'T OVERWRITE SHORT TRACE
TAD (-Z
SZA CLA
JMP INICNK
/HERE TO INITIALIZE ALL DEVICES AT STATION
NLM1 /START AT DDBTAB
DCA TEMP6 /SAVE DEVICE NUMBER
/INITIALIZE THE TTY INPUT CHAR QUEUE
TAD (TTIQUE-1
DCA TIQPTR
TAD (TTIQUE-1
DCA TIQTKR
/HERE TO INITIALIZE THE TTYS
IFNZRO FTDC02F <
/DCMINT IS DONE ONCE A SECOND ANYWAY SO DON'T BOTHER HERE
/ ALSO DON'T DO CALL TO ALLSEL BECAUSE STARTUP MESSAGE WILL DO IT ANYWAY
>/END OF IFNZRO DC02F
TAD (-1-TTYN /COUNT OF CTY & TTYS
DCA TEMP8 /INITIALIZE TTY COUNTER
INITT0, JMS INITTY
ISZ TEMP8 /HAVE WE DONE ALL THE TTY'S ?
JMP INITT0 /NOT YET SO KEEP GOING
INICDR,
IFNZRO CDRN <
/HERE TO INITIALIZE THE CDR
DCA CDRNXT /NO CARD READY TO GO
JMS INIDDB /INITIALIZE DEVICE BLOCK
>/END OF IFNZRO CDRN
IFNZRO LPTN <
/HERE TO INITIALIZE THE LPT
INILPT, JMS INIODB /INITIALIZE DDB
DCA LPTCCN /NO COMPRESSED CHAR COUNT YET
DCA LPTCNT /NO CHARS IN CHUNK STRING
DCA LPTCOL /WE ARE AT LEFT HAND MARGIN
TAD (LPTVFU-1 /INDEX TO VFU
DCA LPTLNE /WE ARE AT TOP OF FORM
TAD (SKP
CDFINS /WE ARE CHANGING AN INSTRUCTION
DCA LPTPIV
CDFCNK
TAD [LPTCHK
DCA I [LPTBLK+DEVCHK /STORE CHUNK COUNT
>/END OF IFNZRO LPTN
INIPTR,
IFNZRO PTRN <
/HERE TO INITIALIZE THE PTR
JMS INIDDB
>/END OF IFNZRO PTRN
PTPINI,
IFNZRO PTPN <
/HERE TO INITIALIZE THE PTP
JMS INIODB
>/END OF IFNZRO PTPN
INIPLT,
IFNZRO PLTN <
/HERE TO INITIALIZE THE PLT
JMS INIODB
>/END OF IFNZRO PLTN
JMP LOOP
/HERE TO INITIALIZE A TTY BLOCK
INITTY, 0
JMS INIODB
TAD INTMP1
DCA I DDB
TAD (4000+TTYBIT+OUTBIT+STSBIT
DCA I DDBSTS /SET INITIAL TTY STATUS WORD
ISZ AUTO1 /SKIP LDBADR
DCA I AUTO1 /SET LDBCOL
ISZ AUTO1 /SKIP LDBWID
TAD (RSTMSG-1
DCA I AUTO1 /SET LDBXPT
DCA I AUTO1 /CLEAR LDBFPT
DCA I AUTO1 /SET LDBCHR
DCA I AUTO1 / " LDBIPT
NLOAD DEVCHK
TAD DDB
DCA TEMPA
TAD [TTYCHK
DCA I TEMPA /STORE OUTPUT CHUNK LIMIT
JMP I INITTY
/HERE TO INITILIZE AN OUTPUT DEVICE BLOCK
INIODB, 0
JMS INIDDB
TAD (OUTBIT
DCA I DDBSTS
JMP I INIODB
SNDOBJ, 0 /SEND OBJECT TYPE
TAD I DDB /FIRST WORD OF DDB
AND (7700 /CLEAR RIGHT HALF
IFZERO PDP8I <
CLL RTR
CLL RTR
CLL RTR
>/END OF IFZERO PDP8I
IFZERO PDP8E <
BSW
>/END OF IFZERO PDP8E
JMS SNDCHR /OBJECT TYPE
JMP I SNDOBJ /RETURN
PAGE
/HERE TO INITIALIZE A DEVICE BLOCK
INIDDB, 0
ISZ TEMP6 /ADVANCE DEVICE NUMBER
TAD TEMP6 /GET NEW DEVICE NUMBER
JMS GETDDB /GET DEVICE BLOCK ADR AND SET UP DDBSTS
DCA AUTO1
TAD (1-DEVLNK /CLEAR ONLY PORTION
DCA INTMP1
INIDD0, DCA I AUTO1 /ZERO DEVICE BLOCK
ISZ INTMP1
JMP INIDD0
ISZ AUTO1 /SKIP LINK
TAD I DDB
AND (7700
DCA I DDB
JMP I INIDDB
IFNZRO FTDC02F <
/HERE TO SELECT ALL LINES AGAIN(SO INTERRUPTS WILL WORK)
ALLSEL, 0
IFNZRO TTYN <
NL0
TAD DC1MSK /MASK FOR 1ST GROUP
DCMTON /SELECT LINES
IFDEF DC2MSK <
NL0
TAD DC2MSK
DCMTON /SELECT LINES IN 2ND GROUP
>/END OF IFDEF DC2MSK
IFDEF DC3MSK <
NL0
TAD DC3MSK
DCMTON /SELECT LINES IN 3RD GROUP
>/END OF IFDEF DC3MSK
IFDEF DC4MSK <
NL0
TAD DC4MSK
DCMTON /SELECT LINES IN 4TH GROUP
>/END OF IFDEF DC4MSK
>/END OF IFNZRO TTYN
JMP I ALLSEL /ALL DONE SO DISMISS
>/END OF IFNZRO FTDC02F
IFNZRO FTDEBUG <
/HERE TO PUT A WORD INTO THE TRACE
TRACEW, 0
CDFCNK /CHANGE TO TRACE FIELD ########
DCA I BUGGER
CDFCNK /CHANGE TO NORMAL DATA FIELD
TRCWD1, NL1 /OR CHANGED TO JMP I TRACEW ########
TAD BUGGER
SZA CLA
TRCWD2, JMP I TRACEW
TAD (7577
DCA BUGGER
JMP I TRACEW
>/END OF IFNZRO FTDEBUG
/IRMA CATCHER
/ COME HERE ONCE PER SECOND
/ IF A TTY IS ACTIVELY OUTPUTING SET IRMA BIT IN LDBSTS UNLESS
/ IRMA BIT IS STILL ON FROM LAST TIME, IN WHICH CASE TTY HAS LOST XMT SO FAKE ONE
IRMA, IFNZRO TTYN <
IFNZRO FTDC02F <
NL1 /REENABLE INTERRUPTS ON ALL LINES
DCMINT /(IN CASE FLIPFLOP CLEARED)
>/END OF IFNZRO FTDC02F
>/END OF IFNZRO TTYN
NL0 /START WITH CTY
DCA TEMP5
IRMA1, TAD TEMP5 /GET NUMBER OF NEXT DEVICE
JMS GETDDB /GET ADDRESS OF BLOCK FOR THIS DEVICE
IOF /IN CASE OF XMT INTERRUPTS
DCA INTDDB /SAVE ADR OF DEVICE BLOCK
TAD I DDBSTS
SMA /IS DEVICE ACTIVE ?
JMP IRMA7 /NO
AND [TTYBIT
SNA CLA /IS DEVICE A TTY ?
JMP IRMA9 /NO SO DONE
TAD (DEVTIM /RELATIVE ADR OF FILLER TIMER
TAD INTDDB /MAKE ABSOLUTE
DCA INTMP1 /SAVE POINTER TO FILLER
TAD I INTMP1 /GET FILL TIMER
SZA CLA /SKIP IF FILLING
JMP IRMA7
NLOAD IRMBIT /MASK FOR IRMA BIT
AND I DDBSTS /GET BIT FROM OLD STATUS
SZA CLA /SKIP IF WE LOST AN XMTINT
JMS XMTINT /FAKE A XMT INTERRUPT
NLOAD IRMBIT /GET BIT FOR IRMA
TAD I DDBSTS /PUT INTO STATUS WORD
DCA I DDBSTS
IRMA7, ION
NL0
ISZ TEMP5 /ADVANCE 1 DEVICE
TAD TEMP5
TAD [-DEVN
SZA CLA
JMP IRMA1
IRMA9, /DCA BROADC /CLEAR BROADCAST MESSAGE POINTER
JMP LOOP /ALL DONE
/HERE ONCE PER TICK TO CHECK TTY'S
/ SEE IF THERE IS AN ERROR MESSAGE FOR THE CTY
/ CHECK FILLERS FOR ALL LINES
CLKTTY, TAD I (CTYBLK+LDBFPT
SZA CLA
JMP CLKTY2 /ALREADY TYPING
TAD ERRFLG
SNA
JMP CLKTY2 /NO MSG SO DONE
DCA I (CTYBLK+LDBFPT
DCA ERRFLG /SETUP MSG
TAD (CTYBLK
DCA DDB
TAD (CTYBLK+DEVSTS
DCA DDBSTS
JMS TTYGO /START CTY IF NEED TO
CLKTY2,
TAD (FIRTTY /GET ADR OF FIRST TTY BLOCK
CLKTY3, IOF /DISABLE INTERRUPTS FOR A WHILE
DCA INTDDB
TAD (DEVTIM /RELATIVE ADR OF TIMER
TAD INTDDB
DCA TEMP2 /SAVE POINTER TO TIMER
TAD I TEMP2 /GET TIMER FOR FILLER
SZA CLA
ISZ I TEMP2
JMP CLKTY5 /HASN'T TIMED OUT
NLOAD IRMBIT /FLAG TRANSMITTER IS ACTIVE
AND I DDBSTS
SNA CLA /DON'T START IF STILL TYPING
JMS XMTINT
NL0 /BECAUSE XMTINT RETURNS GARBAGE
CLKTY5, ION
TAD INTDDB
TAD (DEVLNK
DCA TEMP1
TAD I TEMP1
SZA
JMP CLKTY3
JMP CLKTY9
IFNZRO TTYN <
IFZERO FTDC02F <
DISCDE
JMP DISSN1
>/END OF IFZERO FTDC02F
>/END OF IFNZRO TTYN
PAGE
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** DESCRIPTION ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
IFNZRO 0 <
THIS FILE CONTAINS TWO SYNCHRONOUS INTERFACE MOUDLES(SIM) UNDER
CONDITIONAL FTDP01 AND ONE PROTOCOL MODULE (PM) COMBINING DDCMP
AND NCS.
SYNCHRONOUS OUTPUT:
A SIM IS ALWAYS IN ONE OF FOUR STATES:
T10FLG=-2 MESSAGE READY TO TRANSMIT
T10FLG=-1 MESSAGE IS BEING TRANSMITTED
T10FLG=0 LINE IS SENDING IDLES
T10FLG=1 LINE IS SENDING SYNCS
WHEN T10FLG IS -2 T10NWC(T0 10 NEXT WORD COUNT) AND T10NCA(TO 10 NEXT
CURRENT ADDRESS) DESCRIBE THE NEXT MESSAGE.
SYNCHRONOUS INPUT:
THE SIM IS ALWAYS IN ONE OF THREE STATES:
A.) IDLE
B.) RECEIVING A UNNUMBERED MESSAGE(ACK, NAK, ETC.).
C.) RECEIVING NUMBERED MESSAGE DATA.
THE STATE IS SET BY THE PM BY SETTING INRCPV TO BE:
A.) INRC10
B.) INRC20
C.) INRC70
WHEN THE SIM IS IN STATE C, AND ONLY THEN, INCOMING CHARS ARE PLACED
IN CHUNKS RATHER THAN A FIXED BUFFER.
THE SIM USES F10WC AND F10CA TO STORE THE DATA.
WORD COUNT OVERFLOWS WILL CAUSE THE SIM:
A.) RESETS TO JUNK BUFFER
B.) TRANSFERS TO INTP40
C.) TRANSFERS TO INTP60
WHEN THE RECEIVER IS IDLE AND ONE OF THE FOUR CHARS AT F10TCH IS
FOUND IN AN INPUT STREAM THE SIM NOTIFIES THE PM BY BRANCHING TO:
INTP00 WHEN FINDS CHAR AT F10TCH
INTP10 WHEN FINDS CHAR AT F10TCH+1
INTP20 WHEN FINDS CHAR AT F10TCH+2
INTP30 WHEN FINDS CHAR AT F10TCH+3
WHEN THE RECEIVER IS IN STATE B THE PM IS NOT NOTIFIED OF SPECIAL
CHARS.
WHEN THE RECEIVER IS IN STATE C THE SIM WILL NOTIFIY THE PM
OF SPECIAL CHARS BY JMPING TO INTP70(CHAR IN INTMP1, ADR IN INTMP5);
WHEN THE PM IS DONE WITH THE CALL TO INTP70 IT WILL RETURN TO INRC80.
>/END OF IFNZRO 0
/HERE AT INTERRUPT LEVEL TO SET RECEIVER TO IDLE MODE
INRCID, 0
NLM1
CDFINS /WC IS IN FIELD 0
DCA I [F10WC
NLM1
TAD RCVPTR /POINT TO BEGINNING OF BUFFER
DCA I [F10CA /SAVE
TAD (INRC10
DCA INRCPV /INITIALIZE DP01 INPUT PIVOT
CDFCNK /BACK TO NORMAL FIELD
JMP I INRCID
/HERE AT INTERRUPT LEVEL WHEN RECEIVER HAS FOUND A SOH
INTP00, TAD (-7 /HEADER IS ALWAYS 8 CHARS
JMS INTP41
TAD (INRC70 /WE ARE NOW RECEIVING NUMBERED MSG DATA
DCA INRCPV /SET SIM MODE
TAD RCVPTR /GET ADR OF MESSAGE HEADER
JMS GETLEN /GET LENGTH OF MESSAGE
TAD (0002 /FUDGE FOR CRC
DCA F10TWC
DCA INTMP1 /INITIALIZE FOR INRC80
TAD (0010 /DISPLACEMENT TO CHUNK COUNTER
TAD RCVPTR /ADD TO START OF BUFFER
DCA INTMP2 /SAVE CHUNK COUNTER ADDRESS
TAD INTMP2 /GET CHUNK COUNTER ADDRESS
DCA CNTPNT /STORE FOR INRC80
DCA I INTMP2 /CLEAR CHUNK COUNTER
ISZ INTMP2 /SKIP OVER CHUNK COUNTER TO LINK TO CHUNKS
DCA I INTMP2 /CLEAR LINK TO 1ST CHUNK
JMP INRC80
INTP20, /SHOULDN'T HAPPEN
INTP30, /SHOULDN'T HAPPEN !
/HERE AT INTERRUPT LEVEL WHEN RECEIVER DETECTS BEGINING OF UNNUMBERED MESSAGE = ENQ
INTP10, TAD (-7 /UNNUMBERED MESSAGES ARE ALWAYS 8 CHAR LONG
INTP31, JMS INTP41 /WAIT FOR REST OF MESSAGE FROM DECSYSTEM-10
INTP33, NLM1
DCA WRKREQ /SO NON-INTERRUPT LEVEL CODE WAKE UP
TAD (CTLSIZ /ADVANCE TO NEXT CTL BUFFER
TAD RCVPTR
TAD (-RCVLIM
SNA
TAD (RCVQUE-RCVLIM
TAD (RCVLIM
DCA RCVPTR
TAD RCVPTR
NEGATE
TAD RCVTKR
SNA CLA /DO WE HAVE TOO MANY MSGS READY
HLT
JMS INRCID /SET RECEIVER TO IDLE STATE
JMP INTP42
/HERE AT INTERRUPT LEVEL WITH WC OVERFLOW ON UNNUMBERED MESSAGE
INTP40, JMP I INTP41
INTP41, 0
CDFINS /NEED TO SET WC AND CA IN FIELD 0
DCA I [F10WC /SAVE LENGTH
TAD RCVPTR /ADR OF BUFFER FOR HEADER
DCA I [F10CA /SET BUFFER ADR FOR RECEIVER
TAD (INRC20
DCA INRCPV
CDFCNK /RESET NORMAL DATA FIELD
INTP42,
IFZERO FTDP01 < DPSGRR > /ENABLE RECEIVER
JMP INTDIS
/HERE AT INTERRUPT LEVEL WITH WC OVERFLOW ON NUMBERED MSG DATA
INTP60=INTP33 /JUST CALL CURRENT MSG DONE
INTP70=INTDIS /NO SPECIAL CHAR HANDLING IN MIDDLE OF JUNK
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** DDCMP ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/MESSAGE PROTOCOL
SYN=226
IDLE=SYN /NO SPECIAL IDLE CHARACTER
ENQ=005 /1ST CHAR IN UNNUMBERED MESSAGES
DLE=220 /1ST CHAR IN BOOTSTRAP MESSAGES
SOH=201 /1ST CHAR IN NUMBERED MESSAGES
/NUMBERED MESSAGES
/ SOH CC1 CC2 R N A0 BCC1 BCC2 DEV CNT TYPE DATA BCC3 BCC4
/ CC1&CC2 ARE TOTAL LENGTH OF DATA(BCC2 THRU BCC3 EXCLUSIVE)
/ CC1 IS LOWORDER 8BITS OF NUMB
/ R IS # OF LAST GOOD MESSAGE RECEIVED
/ N IS THIS MESSAGE NUMBER
/ A0 IS THE DESTINATION STATION ADR(ALWAYS 1)
/ BCC1 BCC2 IS THE CRC ON SOH THROUGH A0 INCLUSIVE
/ DATA IS ADR N TYPE MUMBLE, ETC(WHERE N IS LENGTH OF MUMBLE)
/ N TYPE MUMBLE MAY BE REPEATED
/ BCC3 BCC4 ARE THE CRC OF BCC2 THRU BCC3 EXCLUSIVE
/ DEV IS THE DESTINATION DEVICE; 1 IS STATION
/ CNT(EXTENSIBLE) IS LENGTH OF (TYPE-DATA)
/ TYPE IS 1=INITIAL CONFIGURATION MESSAGE
/ 2=CONNECT FOLLOWED BY:
/ DEVICE ADR(OR 0 FOR PICK ONE)
/ DEVICE TYPE
/ FEATURES
/ 3=DISCONNECT
/ 4=REJECT
/ 5=ACCEPT
/ 6=STATION GOING DOWN
/ 7=REQUEST STATUS
/ 10=STATUS MESSAGE
/ 11=REQUEST MODE
/ 12=SET MODE
/ 13=DATA REQUEST BY RECORD
/ 14=DATA REQUEST BY CHAR
/ DATA IS WHAT MAY FOLLOW TYPE
/ (CNT TYPE DATA) MAY BE REPEATED
/UNNUMBERED MESSAGES
FILL=000 /FILL CHARACTER
A0=1 /DESTINATION STATION ADR
/ACK: ENQ ACK FILL MSG# FILL A0 BCC1 BCC2
ACK=001
/ MSG# IS LAST GOOD MSG RECEIVED
/NAK: ENQ NAK RNAK MSG# FILL A0 BCC1 BCC2
NAK=002 /NEGATIVE ACKNOWLEDGE
/ RNAK=1 BCC ERROR
/ RNAK=3 REP RESPONSE
/ RNAK=10 SHORT TERM HIGH LEVEL EXCEPTION
/ RNAK=11 RECEIVER OVERRUN
/ RNAK=20 MESSAGE TOO LONG
/ RNAK=21 HEADER FORMAT ERROR
/ MSG# IS LAST GOOD MSG RECEIVED
/REP: ENQ REP FILL FILL N A0 BCC1 BCC2
REP=003 /REPLY TYPE
/ N IS THE LAST MESSAGE# SENT
/RESET: ENQ RESET FILL FILL N A0 BCC1 BCC2
RESET=4 /DC72NP WILL NOT SEND THIS TYPE/WILL RESPOND WITH START
/RESAK: ENQ RESAK FILL R FILL A0 BCC1 BCC2
RESAK=5 /DC72NP WILL NOT SEND THIS TYPE/WILL RESPOND WITH START
/START: ENQ STRT FILL FILL FILL A0 BCC1 BCC2
STRT=006 /START TYPE
/ THE NEXT NUMBERED MESSAGE TO BE SENT IS 1
/STACK: ENQ STACK FILL FILL FILL A0 BCC1 BCC2
STACK=007 /START ACKNOWLEDGE
/ THE NEXT MESSAGE SENT, AND NEXT MESSAGE EXPECTED
/ ARE BOTH 1.
/BOOT: DLE CC1 CC2 R N A0 BCC1 BCC2 S1 S2 DATA BCC3 BCC4
DEFINE T10ADJ Q < XLIST
TAD Q
TAD (-T10LST /CHECK FOR LAST BUF
SNA
TAD (T10BF1-T10LST-T10LEN /ADJUST IF LAST
TAD (T10LEN+T10LST
DCA Q /ADJUST & SAVE NEW VALUE
XLIST >/END OF T10CHK
MSNMAX=377 /MAXIMUM MESSAGE NUMBER
/WHEN A MSG IS RECEIVED CORRECTLY AN ACK IS SENT BACK;
/ AN ACK IMPLIES ACK OF ALL LOWER NUMBERED MESSAGES
/WHEN A MSG IS RECEIVED INCORRECTLY A NAK MSG IS SENT BACK;
/ A NAK IMPLIES ACK OF ALL LOWER NUMBERED MSGS.
/HERE TO PROCESS MESSAGE RECEIVED FROM THE DECSYSTEM-10
RCVCHK, DCA CRC1
CRCXI1, DCA CRC2 /INITIALIZE CRC ########
TAD (-6
DCA TEMP3 /6 CHARS IN ALL MESSAGES
NLM1
TAD RCVTKR
DCA AUTO1 /MESSAGE POINTER
RCVCK2, TAD I AUTO1
IFZERO DP8ETR <
JMS CRCALC /PUT NEXT CHAR INTO CRC
>/END OF IFZERO DP8ETR
IFNZRO DP8ETR <
JMS ITRCRC /TRACE AND ACCUM CRC
>/END OF IFNZRO DP8ETR
ISZ TEMP3
JMP RCVCK2
IFZERO DP8ETR <
NL4
TAD AUTO1
DCA TEMP5 /SAVE POINTER TO ADR OF CHUNK STRING
>/END OF IFZERO DP8ETR
IFNZRO DP8ETR <
JMS ITRCR2 /STASH CRC IN TRACE
>/END OF IFNZRO DP8ETR
TAD I AUTO1
NEGATE
TAD CRC2 /COMPARE HALF OF CRC
SZA CLA
JMP BADCRC /BRANCH IF BUM CRC
TAD I AUTO1
NEGATE
TAD CRC1 /GET SECOND HALF OF CRC
SZA CLA
JMP BADCRC /BRANCH IF BUM
TAD I RCVTKR
TAD (-SOH
SNA /TEST FOR NUMBERED MESSAGE
JMP RCVMSG
TAD (SOH-ENQ
SZA CLA
HLT /BE SURE IS ENQ
TAD RCVTKR
DCA AUTO1
TAD I AUTO1 /GET MESSAGE TYPE CODE
SPA SNA
JMP RCVGAG /CHECK CODE LARGE ENOUGH
TAD (-10
SMA
JMP RCVGAG /CHECK FOR TOO LARGE
TAD (JMP I RCVTAB+7
DCA .+1
7402 /DISPATCH ON MESSAGE CODE
RCVTAB, RCVACK; RCVNAK; RCVREP; RRESET; RRSACK; RCVSRT; RCVSTK
PAGE
/HERE WHEN RECEIVE AN ACK MESSAGE
RCVACK, JMS RCVRCK /DO RIGHT THING BY MSG#
JMP RCVADV
/HERE WHEN RECEIVE A NAK MESSAGE
RCVNAK, JMS RCVRCK /DO RIGHT THING BY MSG#
TAD T10AKR
DCA T10TKR /RESET BUFFER TO SEND NEXT
JMP RCVADV
/HERE TO CHECK MSG# IN ACK OR NAK OR NUMBERED MSG
/ ADJUSTS QUEUE ETC.
RCVRCK, 0
NL3
TAD RCVTKR
DCA TEMP2 /POINTER TO MSG#
TAD I TEMP2
JMS RCVRC8
DCA TEMP1 /SAVE ADJ #
TAD T10HSN
JMS RCVRC8
NEGATE
TAD TEMP1
SPA CLA
JMP RCVGAG /IF NOT REASONABLE RESTART
RCVRC0, TAD I TEMP2
NEGATE
TAD T10LAN /COMPARE LAST ACKED & THIS
SNA CLA
JMP I RCVRCK /IF SAME DONE
TAD T10AKR
NEGATE
TAD T10TKR
SZA CLA
JMP RCVRC1
T10ADJ T10TKR
RCVRC1, TAD T10LAN
JMS COUNT
DCA T10LAN /ADJUST MSG #
T10ADJ T10AKR
TAD T10LAN
DCA I TEMP2
TAD (-REPTIM /TIME TILL NEXT REP
DCA REPTCK
JMP RCVRC0
/FOLLOWING RETURNS LAN-N OR LAN-N-MSNMAX-1
RCVRC8, 0
NEGATE
TAD T10LAN /COMPARE TO LAST ACKED
SMA SZA
TAD (-MSNMAX-1
JMP I RCVRC8
/HERE WHEN RECEIVE A REP MESSAGE
RCVREP, NL3
DCA NAKFLG /SEND NAK WITH REASON = 3
JMP RCVADV /DONE WITH BLOCK
/HERE WHEN RECEIVE A RESET MESSAGE
RRESET,
/HERE WHEN RECEIVE A RESET ACKNOWLEDGE MESSAGE
RRSACK,
/HERE WHEN RECEIVE A MESSAGE WITH TYPE OUT OF RANGE(E.G. POLL)
RCVGAG, IOF
NL0 /CLEAR AC & INTERRUPTS
TAD (BMTMSG-1
JMS CTYEXC /COMPLAIN TO OPERATOR
JMP INIALL /RESTART STATION
/HERE WHEN RECEIVE A START MESSAGE
RCVSRT, JMS RVSTK2 /INITIALIZE RECVOK
IOF /TURN INTERRUPTS OFF
NLM1 /FLAG TO SEND A STACK
DCA STACKF /SET FLAG
JMP INISUM /REINITIALIZE STATION
/HERE WHEN RECEIVE A STACK MESSAGE
RCVSTK, JMS RVSTK2 /INITIALIZE RECVOK
DCA STACKF /FLAG WE ARE UP NOW
JMP RCVADV
RVSTK2, 0
/ NL4
/ TAD RCVTKR
/ DCA TEMP1 /NEXT MSG # WILL GET
/ NLM1
/ TAD I TEMP1 /DECREMENT IT
/ AND [0377
NL0 /ZERO IS LAST MESSAGE RECEIVED
DCA RECVOK /LAST # RECEIVED OK
JMP I RVSTK2
/HERE WHEN RECEIVE A NUMBERED MESSAGE
RCVMSG, JMS RCVRCK /DO RIGHT THING BY RESPONSE FIELD
NLM3
TAD AUTO1
DCA TEMP1 /POINTER TO MSG N#
TAD RECVOK
JMS COUNT
NEGATE /MAKE -# EXPECTED
TAD I TEMP1
SZA CLA
JMP RCVFLU /IF NOT EXPECTED DONE
CRCXI2, DCA CRC1 / ########
DCA CRC2 /INITILAIZE CRC FOR MESSAGE
TAD I TEMP5
DCA TEMP3 /ADR OF CHUNKS(IF ANY)
TAD RCVTKR /GET ADR OF MESSAGE HEADER
IOF
JMS GETLEN /GET LENGTH OF MESSAGE
ION
NEGATE
DCA TEMP4 /AND SAVE DATA COUNT
TAD TEMP4
DCA TEMP2 /KEEP 2ND COPY OF COUNT
JMP RCMSG0
/HERE TO GET THE LENGTH FIELD FROM A MESSAGE HEADER
GETLEN, 0
DCA IAUTO1
TAD I IAUTO1
DCA INTMP1 /SAVE LOWORDER BITS
TAD I IAUTO1
AND (0007 /ONLY BELIVE 11BITS OF COUNT
IFZERO PDP8I <
CLL RTL /CAN'T ROTATE RIGHT
CLL RTL /THROUGH LINK THAT
CLL RTL /INTERRUPTS ZAP
>
IFZERO PDP8E <
BSW
>
CLL RTL
TAD INTMP1
JMP I GETLEN
PAGE
RCMSG0, JMS GETCHR
JMP NRMNAK /GET NEXT CHAR IF ANY
IFZERO DP8ETR <
JMS CRCALC
>/END OF IFZERO DP8ETR
IFNZRO DP8ETR <
JMS ITRCRC /TRACE AND ACCUM CRC
>/END OF IFNZRO DP8ETR
ISZ TEMP2
JMP RCMSG0 /LOOP BACK FOR REST OF DATA
TAD TEMP3 /GET ADR OF LAST DATA
DCA TEMP6 /SAVE IT
IFZERO DP8ETR <
JMS GETCHR
JMP NRMNAK
>/END OF IFZERO DP8ETR
IFNZRO DP8ETR <
JMS ITRCR3 /GET CRC CHAR AND TRACE IT
>/END OF IFNZRO DP8ETR
NEGATE /GET -CRC2
TAD CRC2 /GET LOW PART OF CRC
SZA CLA
JMP BADCRC
IFZERO DP8ETR <
JMS GETCHR
JMP NRMNAK
>/END OF IFZERO DP8ETR
IFNZRO DP8ETR <
JMS ITRCR3 /GET CRC CHARACTER AND TRACE IT
>/END OF IFNZRO DP8ETR
NEGATE /GET -CRC1
TAD CRC1 /GET HIGH ORDER PART OF CRC
SZA CLA
JMP BADCRC
NL4000 /LAST CHAR IN CHUNK FLAG
TAD I TEMP6
SPA /SKIP IF WAS ALREADY LAST CHAR IN CHUNK
DCA I TEMP6 /SET FLAG ON CHAR
NL0
TAD TEMP6 /GET ADR OF LAST CHAR AGAIN
AND [-CNKSIZ /MAKE INTO CHUNK POINTER
DCA TEMP6
NLM1
TAD TEMP5
DCA TEMP3 /STORE ADR OF CHUNK COUNT
TAD I TEMP6 /GET ADR OF CRC CHUNK IF NOT THIS ONE
SNA /SKIP IF THERE IS ONE FOR CRC
JMP RCMSG1 /OTHERWISE SKIP OVER FOLLOWING
JMS FRECKS /FREE CHUNK WITH CRC(MAYBE)
DCA I TEMP6 /CLEAR LINK TO CRC CHUNKS
NLM1 /DECREMENT CHUNK COUNT
TAD I TEMP3
DCA I TEMP3
RCMSG1,
TAD RECVOK
JMS COUNT /INCREMENT MSG#
TAD (4000
DCA RECVOK /AND SAVE IT W FLAG TO ACK
TAD I TEMP5 /GET ADR OF 1ST CHUNK
DCA TEMP3 /SAVE ADR OF 1ST CHUNK
JMS GTCHR /GET NCT
DCA RNCT /STORE FOR A WHILE
TAD (10 /SELECT SNA/DNA PRESENT BIT
AND RNCT /TURN OFF REST
SNA /SHOULD BE ON
JMP NODNA /SKIP OVER DNA,SNA GETTING
JMS GTCHR /GET DNA
JMS GTCHR /GET SNA
NODNA,
DCA RSNA /SAVE IT FOR LATER
JMS GTCHR /GET NCA
JMS GTCHR /GET NCN
NL0
TAD [7 /MASK OF TYPE BITS FOR NCT
AND RNCT /TURN OFF ALL BUT LOW ORDER 3
SNA /SKIP IF UN-NUMBERED CONTROL
JMP NMBRED /HANDLE NUMBERED CONTROL OR DEVICE CONTROL
/ ONLY UN-NUMBERED CONTROL MESSAGE VALID IS NODE ID (6)
/IFNZRO FTDEBUG <
/ TAD (-6 /CODE FOR NODE ID
/ SZA /SKIP IF OK
/ HLT /HALT IF NOT
/>/END OF IFNZRO FTDEBUG
JMS GETEXN /GET NODE NUMBER
DCA RNOD /STORE IT
JMP RCVFLU /FLUSH IT AND CONTINUE BIG LOOP
NMBRED, JMS GETEXN /GET DLA
SZA /TEST IF NUMBERED CONTROL
JMP DVCTLM /NO, DEVICE CONTROL
/ DLA OF ZERO MEANS NCS NUMBERED CONTROL MESSAGE
/ LEGAL ONES FOR 72 ARE:
/ CONNECT (1)
/ DISCONNECT (2)
/ NEIGHBORS (3) [ONLY FROM 72'S NEIGHBOR]
/ DATA REQUEST (6)
/ REQUEST CONFIG (4)
JMS GETEXN /GET COUNT
NEGATE
DCA TEMP4 /SAVE IN TEMP4
JMS GTCHR /GET TYPE
AND [7 /CLEAR ALL BUT LOW ORDER
TAD (JMP I NBRDSP /ADD BEGINNING OF TABLE+INSTRUCTION
DCA NBRJMP /STORE DISPATCH ADDRESS
NBRJMP, 0 /DISPATCH
NBRDSP, RCVKRD /0 IS ILLEGAL
RCVCON /1 IS CONNECT
RCVDIS /2 IS DISCONNECT
RCVNEI /3 IS NEIGHBORS
RCVRQC /4 IS REQ CONFIG
RCVFLU /5 (CONFIG) IS IGNORED
IFNZRO CDRN <
RCVDRQ /6 IS DATA REQUEST
>/END OF IFNZRO CDRN
IFZERO CDRN <
RCVFLU /6 (DATA REQUEST) INVALID UNLESS CDR
>/END OF IFZERO CDRN
RCVFLU /7 (STA. CTL) IS IGNORED
/HERE TO ACCUMULATE CRC
/ ALGORITHM IS:
/ XOR C,CRC
/ ANDI C,377
/ LSH CRC,-10
/ XOR CRC,TAB(C)
CRCALC, 0
/XOR C,CRC
DCA TEMP1
TAD TEMP1
AND CRC2
CMA IAC
CLL RAL
TAD TEMP1
TAD CRC2
/ANDI C,377
/ AND [0377 /8 BITS ONLY
/LSH CRC,-10 & XOR CRC,TAB(C)
TAD (CRCTAB
DCA TEMP1
TAD I TEMP1
AND CRC1
CMA IAC
CLL RAL
TAD I TEMP1
TAD CRC1
DCA CRC2
TAD (400
TAD TEMP1
DCA TEMP1
TAD I TEMP1
DCA CRC1
CRCRET, JMP I CRCALC
DOWN2, TAD (RCVDSP+1-SNATAB/POINT TO RCVDSP ENTRY
DCA TEMP1 /STORE ADDRESS
TAD (RCVKRD /UN-USED VALUE
DCA I TEMP1 /NOW THIS CONNECTION IS AVAIL
JMP NEIG13 /RETURN TO LOOP
PAGE
/HERE TO GET AN EXTENSIBLE NUMBER
/ CALL JMS GETEXN WITH TEMP3 POINTING TO THE STRING OF CHUNKS
RCVKRD, HLT /HERE WHEN YOU GET VARIOUS FLAVORS OF GARBAGE
GETEXN, 0
JMS GTCHR
DCA TEMP1
TAD TEMP1
AND (0200 /MASK OFF EXT BIT
SNA CLA
JMP GETEX2
JMS GTCHR
CLL RTL
CLL RTL
SPA
HLT
CLL RTL
CLL RAL
TAD (-200
GETEX2, TAD TEMP1
JMP I GETEXN
/HERE WHEN RECEIVE A DISCONNECT
RCVDIS, JMS GTCHR /GET ADR OF DEVICE
TAD (CTRLTB-1
DCA TEMP1
TAD I TEMP1
IFNZRO FTDEBUG <
SNA
HLT
>/END OF IFNZRO FTDEBUG
DCA DDB
TAD DDB
TAD (DEVSTS
DCA DDBSTS
IFNZRO FTDEBUG <
NL2000
AND I DDBSTS
SNA CLA
HLT /NOT CONNECTED
>/END OF IFNZRO FTDEBUG
TAD I DDBSTS
AND (4777
TAD (1000 /BIT TO SEND AN ACCEPT
DCA I DDBSTS
DCA I TEMP1 /NO LONGER CONNECTED
TAD TEMP1
TAD (RCVDSP-CTRLTB+1
DCA TEMP1
TAD (RCVKRD
DCA I TEMP1
JMP RCVFLU /DONE WITH MESSAGE
/HERE WHEN RECEIVE A CONNECT MESSAGE
RCVCON, JMS GETEXN /GET DLA
SNA /CHECK FOR 0
JMP RCVCN6 /YES SO MAKE ONE
/ HERE WHEN DLA IS NON-ZERO; THAT MEANS A CONNECT CONFIRM.
/ HOWEVER, DC72 NEVER DOES A CONNECT, SO SHOULDN'T HAPPEN.
HLT
RCVCN2,
JMS GETEXN /GET SLA
DCA TEMP2 /STORE IT
TAD (DEVN /LENGTH OF RCVDSP TABLE
TAD TEMPA /ADD RCVDSP ENTRY POINTER
DCA TEMP1 /STORE ADDRESS FOR SLA
TAD TEMP2 /PICK UP SLA
DCA I TEMP1 /STASH IT
TAD (DEVTYP-1 /GET ADR OF DEVICE TYPE TABLE
DCA AUTO1
TAD (-CTRLN /NUMBER OF POSSIBLE TYPES
DCA TEMPD /NUMBER OF POSSIBLE TYPES
JMS GTCHR /GET OBJECT TYPE (ONLY ONE BYTE)
/ LEGAL ARE 1=TTY,1=CARD READER,3=LINE PRINTER
RCVCN4, TAD I AUTO1
SNA
JMP RCVCN5 /THIS IS THE ONE WE NEEDED
ISZ AUTO1 /SKIP DISPATCH ADR
ISZ TEMPD /HAVE CHECK ALL POSSIBLE ?
JMP RCVCN4 /NO SO KEEP ON CHECKING
JMP BADTYP /SEND DISCONNECT
RCVCN5, TAD I AUTO1
DCA TEMPB
TAD (-CONTTY /SEE IF TTY
TAD TEMPB /WE ARE DISPATCHING TO
SNA CLA /SKIP IF NOT
JMP RCVCNT /HANDLE TTY CASE
JMS SKPEXN /SKIP PROCESS ID FIELD
RCVCN0,
JMS GETEXN /GET OBJECT TYPE OF SENDER
JMS SKPEXN /SKIP HIS PROCESS ID
JMS GETEXN /MAX MESSAGE LENGTH
DCA TEMP1 /STORE
TAD (DEVN
TAD (DEVN
TAD TEMPA /DISPATCH ADDRESS
DCA TEMP2 /STASH
TAD TEMP1 /GET MAX LENGTH
DCA I TEMP2 /STORE IT
TAD TEMP2 /GET ADDRESS
TAD (DEVN /POINT TO NEXT TABLE
DCA TEMP2 /STORE IT
TAD RSNA /GET SNA
DCA I TEMP2 /STORE IT
JMP I TEMPB /GO TO DEVICE DEPENDENT CONNECT
RCVCNT, JMS GETEXN /GET TTY NUMBER
DCA TTYNO
JMP RCVCN0 /CONTINUE
TTYNO, -1
CONTTY, TAD (RCVTTY /DISPATCH ADDRESS
DCA I TEMPA /SAVE IT
TAD TTYNO
JMS TDBCHK /CHECK TTY RANGE
TAD (DDBTAB
DCA TEMPC /PROPER ENTRY
TAD I TEMPC /PROPER DDB
JMP CONDEV
IFNZRO CDRN <
CONCDR, TAD (RCVCDR /DISPATCH ADDRESS
DCA I TEMPA /INTO TABLE
TAD (CDRBLK /GET DDB ADDRESS
JMP CONDEV /DO REST
>/END OF IFNZRO CDRN
PAGE
/HERE TO FIND A VACANT SLOT FOR A CONNECT
RCVCN6, TAD (-DEVN
DCA TEMP2
TAD (RCVDSP+1
DCA TEMPA /BEGINNING OF DISPATCH TABLE + 1
RCVCN7, TAD I TEMPA /GET DISPATCH ADDRESS
TAD (-RCVKRD /IS IT UNUSED?
SNA CLA /SKIP IF NOT
JMP RCVCN2 /YES, WE'VE FOUND ONE
ISZ TEMPA /ADVANCE TO NEXT DISPATCH ENTRY
ISZ TEMP2 /HAVE WE CHECKED ALL SLOTS ?
JMP RCVCN7
JMP TOOMNY /SEND DISCONNECT
IFNZRO LPTN <
/HERE ON CONNECT FOR LPT
CONLPT, TAD (RCVLPT /GET WHERE TO GO ON MESSAGE
DCA I TEMPA /STORE IN RCVDSP TABLE
TAD (LPTBLK /POINT TO DEVICE BLOCK
JMP CONDEV /CONTINUE (I.E. SET CONNECT AND NEED-TO-ACCEPT BITS)
>/END OF IFNZRO LPTN
DVCTLM, /DEVICE CONTROL MESSAGE
/ AC HAS DLA IN IT
ZZ=CTRLN
ZZ=DEVN
TAD (-ZZ /NEGATIVE OF (NO. OF ENTRIES+1)
SMA SZA
JMP RCVKRD /OUT OF RANGE
TAD (RCVDSP+ZZ /POINT TO DISPATCH TABLE ENTRY
DCA TEMP1 /SAVE IT
TAD I TEMP1 /GET DISPATCH ADDRESS
DCA TEMP2 /SAVE IT
TAD TEMP1 /DISPATCH ADDRESS
TAD (-ZZ-1 /POINT TO DDB ADDRESS
DCA TEMP1 /SAVE ADDR OF DDB ADDRESS
TAD I TEMP1 /GET DDB ADDRESS
DCA DDB /STORE
TAD RNCT /GET NCT
AND [40 /SEE IF INTERRUPT MESSAGE
SNA CLA /SKIP IF YES
JMS DATDEC /DECREMENT DATA REQUESTS
JMS GETEXN /GET COUNT
NEGATE
DCA TEMP4 /SAVE MINUS COUNT
JMS GETEXN /GET DEVICE CTL MESSAGE TYPE
JMP I TEMP2
/DEVICE INDEPENDENT PORTION OF CONNECT
/ CALL WITH DEVICE BLOCK IN AC
CONDEV, DCA DDB /SAVE DEVICE ADR
NLOAD DEVSTS
TAD DDB
DCA DDBSTS
NLOAD DEVRNN /GET DISP OF RESTRICTED NODE NUMBER
TAD DDB /IN THIS DDB
DCA TEMP2 /STORE ADDRESS
TAD I TEMP2 /GET RNN
SNA /SKIP IF NOT ZERO
JMP CONANY /ZERO MEANS ANYONE CAN CONNECT
TAD RSNA /GET THIS NODE
SZA CLA /SKIP IF MATCHES
JMP INUSE /ELSE PRETEND ALREADY CONNECTED
CONANY,
TAD (CONBIT+1000 /CONNECTED AND ACCEPT BITS
AND I DDBSTS
SZA CLA
JMP INUSE /DEVICE NOT AVAILABLE
Q=DEVDRQ-DEVSTS
NLOAD Q
TAD DDBSTS
DCA TEMP2
DCA I TEMP2 /CLEAR DATA REQUESTS
ISZ TEMP2 /ADVANCE TO DEVDDC
DCA I TEMP2 /CLEAR DDCMP STATUS
TAD (4776 /MASK TO CLEAR CONNECT & ACCEPT & EOF BITS
AND I DDBSTS
TAD (3001 /CONNECT BIT & ACCEPT BIT & SEND STATUS
DCA I DDBSTS
TAD I DDB /GET OLD DEVICE ADR
AND (7700 /STRIP IT
TAD TEMPA /GET DISPATCH ADDRESS
TAD (-RCVDSP /MAKES CONNECT CODE
DCA I DDB /SAVE ADR
TAD TEMPA /GET DISPATCH ADDRESS
TAD (-DEVN-1
DCA TEMP1
TAD DDB
DCA I TEMP1
JMP RCVFLU
IFNZRO LPTN <
RCVLPT, NL0 /IGNORE MESSAGE TYPE
TAD I TEMP5 /GET ADR OF FIRST CHUNK IN MESSAGE
DCA AUTO1 /POINTER TO SHUFFLE TO
NL6 /POINT TO COUNT
TAD I TEMP5
DCA TEMP3
RCVLP1, ISZ TEMP3
TAD I TEMP3
DCA I AUTO1 /PUT NEXT CHAR BACK INTO CHUNK
TAD I TEMP3 /GET CHAR AGAIN
SMA CLA
JMP RCVLP1
IOF
TAD I (LPTBLK+DEVOAD /GET CURRENT OUTPUT CHAR ADR
SZA CLA /IS THERE ONE ?
JMP RCVLP3 /YES
TAD I TEMP5 /ADR OF NEW FIRST CHUNK
DCA I (LPTBLK+DEVOAD
JMP RCVLP5
RCVLP3, TAD I (LPTBLK+DEVOLC /GET ADR OF LAST CHUNK
DCA TEMP1 /SAVE IT
TAD I TEMP5 /GET ADR OF 1ST CHAR WE ARE ADDING
DCA I TEMP1 /LINK INTO OUTPUT CHUNKS
RCVLP5, TAD TEMP6 /GET ADR OF LAST CHAR
DCA I (LPTBLK+DEVOLC /SET NEW LAST CHUNK ADR
JMP RCVLP6 /GO UPDATE CHUNK COUNT
>/END OF IFNZRO LPT
IFNZRO TTYN <
IFZERO FTDC02F <
DISSN1, DISCD1
JMP DISSN2
>/END OF IFZERO FTDC02F
>/END OF IFNZRO TTYN
PAGE
IFNZRO CDRN <
/HERE WHEN RECEIVE A MESSAGE FOR THE CDR
/ REQUEST STATUS 7
/ REQUEST MODE 11
/ SET MODE 12
/ DATA REQUEST BY RECORD 13
/ NEGATIVE DATA REQUEST 15
RCVCDR, TAD (-3 /SEE IF STATUS
SNA
JMP RCDSTA /HANDLE STATUS
TAD (-1 /SEE IF CONTINUE
SZA /SKIP IF YES
JMP RCVFLU /IGNORE OTHER MSGS
RCDCON, /HERE TO PROCESS CONTINUE
TAD (CDRBLK
DCA INTDDB
NL3777
AND I (CDRBLK+DEVDDC
JMS ISTDDC
JMP RCVFLU
RCVDRQ, /HERE WHEN RECEIVE DATA REQUEST
IFZERO CDRN <
JMP RCVFLU /IGNORE EXCEPT FOR CARD READER
>/END OF IFZERO CDRN
IFNZRO CDRN <
JMS GETEXN /GET DLA
TAD (RCVDSP /ADD START OF DISPATCH TABLE
DCA TEMPA /SAVE THIS ENTRY ADDRESS
TAD I TEMPA /GET THIS ENTRY
TAD (-RCVCDR /IS IT CDR?
SZA CLA
JMP RCVFLU /NO, IGNORE
/ JMP RCDDRQ /GO DO DATA REQUEST
>/END OF IFNZRO CDRN
RCDDRQ, JMS GETEXN /GET DATA REQUEST
TAD I (CDRBLK+DEVDRQ
DCA I (CDRBLK+DEVDRQ
JMP RCVFLU /DISPOSE OF MESSAGE
>/END OF IFNZRO CDR
RCDSTA, JMS GTCHR /GET TYPE
TAD (-2 /CLEAR BITS?
SZA CLA
JMP RCVFLU
TAD [DEVDDC
TAD DDB
DCA TEMP6
JMS RCTBIT
DCA I TEMP6
JMP RCVFLU
IFNZRO PLTN <
RCVPLT, HLT
>/END OF IFNZRO PLT
IFNZRO PTPN <
RCVPTP, HLT
>/END OF IFNZRO PTP
RCTBIT, 0
JMS GETEXN /GET BITS 10 WANTS TO CHANGE
DCA TEMP1 /SAVE THE BITS
TAD TEMP1 /GET CHANGE BITS AGAIN
CMA /COMPLEMENT
AND I TEMP6 /GET DDCMPSTATUS WORD WITHOUT BITS
JMP I RCTBIT
RCVTT0, JMS GETCHR
JMP RCVFLU
NEGATE
IAC
DCA TEMP4
JMS GTCHR
JMP RCVTT6
RCVTTY,
DCA TEMP1
NLOAD DEVSTS
TAD DDB
DCA DDBSTS
TAD DDB
IAC
DCA TEMP7 /STORE DEVOAD ADDRESS
TAD TEMP4 /GET COUNT
IAC /SUBTRACT ONE FOR TYPE
DCA TEMP4
NLOAD DEVDDC-DEVSTS
TAD DDBSTS
DCA TEMP6 /STORE DEVDDC ADDRESS
NLOAD DEVOLC /OFFSET FOR DEVOLC
TAD DDB /MAKE ABSOLUTE ADR
DCA TEMP8 /SAVE POINTER TO DEVOLC
NLOAD DEVCHK
TAD DDB
DCA TEMPA /STORE ADR OF CHUNK COUNT
TAD TEMP1 /GET TYPE
RCVTT6, TAD (-1 /TEST TYPE
SZA /SKIP IF DATA
JMP RCVTTC /NO, CONTROL OR STATUS
RCVTT1, JMS GTCHR /GET THE NEXT CHARACTER FROM MESSAGE
DCA TEMP1 /SAVE IT
IOF /INTERRUPTS OFF WHILE WE CHANGE THINGS
TAD I TEMP7 /GET DEVOAD
SZA CLA /SKIP IF NO OUTPUT CHUNKS YET
JMP RCVTT2 /ALREADY HAVE SOME CHUNKS
JMS ERSGET /GET A CHUNK
DCA I TEMP7 /SET DEVOAD
TAD I TEMP7
DCA I TEMP8 /SET DEVOLC
ISZ I TEMPA /INCREMENT CHUNK COUNT
NOP /MAY SKIP
RCVTT2, NL1
TAD I TEMP8 /GET DEVOLC
AND [CNKSIZ-1
SZA CLA /WAS THAT LAST SLOT IN CHUNK ?
JMP RCVTT3 /NO
TAD I TEMP8 /GET DEVOLC
AND [-CNKSIZ /MAKE INTO LINK ADR
DCA TEMP2 /SAVE LINK ADR
JMS ERSGET /GET ANOTHER CHUNK
DCA I TEMP2 /SET LINK IN PREVIOUS CHUNK
TAD I TEMP2
DCA I TEMP8 /SET DEVOLC
ISZ I TEMPA /INCREMENT COUNT OF CHUNKS
NOP /MAY SKIP
RCVTT3, TAD I TEMP8 /GET DEVOLC
DCA TEMP2
NLOAD 3777 /MASK FOR LAST CHARACTER BIT
AND I TEMP2 /STRIP LAST-CHAR BIT
DCA I TEMP2 /AND RESTORE TO CHUNK
ISZ TEMP2 /ADVANCE TO NEXT SLOT
NLOAD 4000 /MAKE LAST-CHAR BIT
TAD TEMP1 /ADD CHARACTER
DCA I TEMP2 /AND PUT INTO CHUNK
ISZ I TEMP8 /ADVANCE DEVOLC
ION
ISZ TEMP4 /COUNT CHAR OUT OF THE MESSAGE
JMP RCVTT1 /KEEP GETTING CHARACTERS
JMS TTYGO /START TTY IF IT NEEDS TO BE
JMP RCVTT0 /LOOP BACK FOR MORE KRUD
PAGE
/TYPE 2 = ECHO PIPELINE MARKER
RCVEPL, TAD (LDBEPL /OFFSET FOR PIPELINE MARKER
TAD DDB
DCA TEMP1 /SAVE POINTER TO MARKER
JMS GTCHR /GET THE MARKER FROM THE MESSAGE
NEGATE /SO WE CAN COMPARE
TAD I TEMP1 /ADD IN WHAT WE SAID LAST
AND [0177 /SEVEN BITS ONLY
SZA CLA
JMP RCVTT0 /NOT THE SAME SO NO SPECIAL ACTION
TAD I AUTO1 /GET DEVBF1
SZA CLA /ARE WE HOLDING ANY INPUT CHARS ?
JMP RCVTT0 /YES SO CAN'T ENTER LOCAL ECHO MODE
NLOAD 7776 /MASK FOR DEFERRED ECHO BIT
IOF
AND I TEMP6 /GET DDCMP STATUS WORD
DCA I TEMP6 /RESTORE STATUS WORD
JMP RCTRQS /AND SEND STATUS TO 10
/TYPE 4 = CHARACTER GOBBLER
RCVGOB,
RCGOB1, TAD DDB
IOF /DISABLE INTERRUPTS FOR A WHILE
DCA INTDDB /SETUP FOR CALL TO IGTOCH
JMS IGTOCH /GET ANY OUTPUT CHARS
JMP RCVTT0 /LOOP BACK FOR MORE MSGS
ION
CLA
JMP RCGOB1
/TYPE 5 = SET BITS
RCVSBT, JMS RCTBIT /SET UP STUFF
TAD TEMP1 /ADD BITS
DCA I TEMP6
JMP RCTRQS /SEND COPY OF UPDATED STATUS TO 10
/TYPE 6 = CLEAR BITS
RCVCBT, JMS RCTBIT /SET UP STUFF
DCA I TEMP6 /RESTORE STATUS WORD
JMS TTYGO /IN CASE CLEARED OUTPUT STOPPED BY XOF BIT
/ JMP RCTRQS /AND SENDCOPY OF UPDATED STATUS TO 10
/TYPE 7 = REQUEST STATUS
RCTRQS, IOF /DISABLE INTERRUPTS FOR A WHILE
NLOAD 7776 /MASK FOR NEED TO SEND STATUS BIT
AND I DDBSTS /CLEAR BIT FROM STATUS WORD
IAC /ADD BIT TO WORD
DCA I DDBSTS
JMP RCVTT0 /THEN ON TO NEXT SUBMESSAGE
/TYPE 10 = CHARACTERISTICS
RCVCHR, TAD (LDBFIL-1 /RELATIVE ADR OF FILLER BLOCK
TAD DDB
DCA AUTO1
TAD (-6 /NUMBER OF FILLERS
DCA TEMP4
RCVCH2, JMS GETEXN /GET NEXT FILLER
SNA /SKIP IF NOT ZERO
JMP RCVCH3 /GO RIGHT TO NEGATE
TAD (37 /ROUND OFF AND ADD 16
CLL RTR /DIVIDE BY 4
CLL RTR /MAKES DIVIDE BY 16
AND [0377 /EIGHT BITS ONLY
RCVCH3,
NEGATE
DCA I AUTO1 /SET NEXT FILLER
ISZ TEMP4
JMP RCVCH2 /ON TO THE NEXT FILLER
TAD (LDBWID
TAD DDB
DCA TEMP4
JMS GETEXN /GET RECEIV SPEED
JMS GETEXN /GET TRANSMIT SPEED
JMS GETEXN /GET TTY WIDTH
DCA I TEMP4 /SAVE TTY WIDTH
JMS GETEXN /GET COLUMN WHERE BLANKS TURN TO CRLF
JMS GETEXN /GET 2741 TYPING ELEMENT
JMS GETEXN /GET 2741 BITS
JMP RCVTT0 /ON TO NEXT SUBMESSAGE
RCVNRM, 0 /HERE BECAUSE RAN OUT OF ROOM FOR A MESSAGE
NRMNAK, ISZ RCVNRM /COUNT TIMES WE NAKED BECAUSE OF NO ROOM
NOP
TAD (10
DCA NAKFLG /REASON FOR NAK
JMP RCVFLU
RCVBCR, 0 /COUNT OF BLOCKS RECEIVED WITH A BAD CRC
/HERE TO NAK A MSG(NUMBERED OR UNNUMBERED BECAUSE OF BAD CRC)
BADCRC, NL1
DCA NAKFLG /SEND A NAK TO 10
ISZ RCVBCR
NOP /COUNT BAD CRC'S RECEIVED
TAD I RCVTKR
TAD (-SOH /CHECK FOR NUMBERED MESSAGE TYPE
SNA CLA /SKIP IF NOT NUMBERED
RCVFLU, TAD I TEMP5
JMS FRECKS /IF NUMBERED FREE CHUNKS
JMP RCVADV
/HERE WHEN SUBMESSAGE IS CONTROL
RCVTT5, TAD DDB /DEVICE BLOCK ADR
TAD [DEVBF1-1 /MAKE AUTO-INCREMENT POINTER TO BUFFERS
DCA AUTO1
JMS GTCHR /GET STATUS TYPE
TAD (-4 /HIGHEST LEGAL MESSAGE
SMA /SKIP IF MESSAGE TYPE IN RANGE
JMP RCVKRD /COMPLAIN
TAD (JMP I TTYDSP+4
DCA .+1
7402
TTYDSP, RCVEPL
RCVGOB
RCVCHR
RCVTTC, TAD (-2 /SEE IF STATUS
SZA CLA /SKIP IF YES
JMP RCVTT5 /MUST BE CONTROL
JMS GTCHR /STC
TAD (JMP I TTSDSP
DCA .+1
7402
TTSDSP, RCVKRD /TYPE 0=UNKNOWN
RCVSBT /TYPE 1=SET BITS
RCVCBT /TYPE 2=CLEAR BITS
PAGE
/HERE WHEN DONE WITH A MESSAGE(NUMBERED OR UNNUMBERED)
RCVADV, NL0
IOF
TAD (CTLSIZ
TAD RCVTKR /ADVANCE TO NEXT SLOT
TAD (-RCVLIM
SNA /CHECK FOR OUT OF RANGE
TAD (RCVQUE-RCVLIM
TAD (RCVLIM /ADJUST
DCA RCVTKR /SAVE NEW SLOT ADR
JMP LOOP /REENTER HUGE LOOP
/SUBROUTINE TO PUT OUT BEGINNING OF NCS MESSAGE
/ NOTE -- LEAVES ADR IN TEMB
NCSBEG, 0
JMS NCSBG /BEGINNING
JMS SNDCHR /ZERO DLA
JMP I NCSBEG /RETURN
NCSBG, 0 /BEGINNING OF NCS MESSAGE
/ AC HAS NCT SUPPLIED BY CALLER
JMS SNDCHR /PUT INTO MESSAGE
TAD I DDB /GET 1ST WORD OF DDB
AND (0077 /CLEAR LEFT HALF
DCA TEMPB /SAVE LINK NUMBER (OURS)
TAD TEMPB /GET IT BACK
TAD (SNATAB-1 /GET DESTINATION NODE ADDRESS
DCA TEMPA /SAVE ADDRESS
TAD I TEMPA /GET DNA
JMS SNDCHR /PUT INTO MESSAGE
Z=OURNNM&177 /OUR NODE NUMBER
TAD (Z
JMS SNDCHR /SNA
JMS SNDCHR /NCA
JMS SNDCHR /NCN
JMP I NCSBG /RETURN
NCSDLA, 0 /SEND DLA
TAD TEMPB /INDEX INTO TABLE
TAD (SLATAB-1 /GET LINK ADDRESS
DCA TEMPA
TAD I TEMPA /DLA
JMS SNDEXN
JMP I NCSDLA /RETURN
/HERE WHEN SYNCHRONOUS TRANSMITTER IS IDLE TO TRY TO START IT
/ FIRST SEE IF WE NEED TO SEND A START OR STACK MESSAGE
/ THEN SEE IF WE NEED TO SEND A NAK MESSAGE
/ THEN SEE IF WE HAVE A NUMBERED MESSAGE TO SEND
/ THEN SEE IF WE NEED TO SEND AN ACK
/ THEN SEE IF WE SHOULD SEND A REP
XSTART, JMS XSTRT0 /SET UP TO SEND A CTL MESSAGE
TAD (SYNBUF-1 /POINT TO ONE BEFORE SYN'S
DCA T10NCA /ADR OF MESSAGE
TAD (-10-NUMSYN /NEGATIVE OF NUMBER OF SYN'S
DCA T10NWC /NEXT WC
TAD STACKF /GET STACK FLAG (-1 FOR STACK, -2 FOR START)
SPA CLA
JMP SNDSTK /NEED TO SEND START OR STACK
TAD NAKFLG
SZA CLA
JMP SNDNAK /CHECK FOR NEED NAK
TAD T10TKR
NEGATE
TAD T10PTR /CHECK FOR RETRANSMISSIONS
SZA CLA /DO WE HAVE A MESSAGE TO RETRANSMIT
JMP SNDMSG /IF HAVE A MESSAGE SEND IT
TAD T10PTR
TAD (-T10LST /SEE IF TIME TO WRAP AROUND
SNA
TAD (T10BF1-T10LST-T10LEN
TAD (T10LEN+T10LST
NEGATE
TAD T10AKR /COMPARE TO LAST ACKED
SNA CLA /HAVE SENT ALL WE CAN ?
JMP XSTRT9
TAD DISREA /SEE IF WE NEED TO SEND DISCONNECT
SZA CLA /ZERO MEANS NO
JMP XDISCN /SEND IT
TAD CONSNA /SEE IF NEED TO SEND CONFIG
SZA CLA /SKIP IF NO,
JMP XSCONF /YES, SEND IT
JMS DISCHK /SEE IF NEED TO SEND DISCONNECT
TAD (FIRDDB /GET ADR OF FIRST DDB
XSTRT1, DCA DDB /SAVE ADR OF DEVICE BLOCK
NLOAD DEVSTS
TAD DDB
DCA DDBSTS /SAVE ADR OF STATUS WORD
TAD (3000 /MASK FOR CONNECT & ACCEPT BIT
AND I DDBSTS
SNA /CHECK TO SEE IF 10 KNOWS ABOUT DEVICE
JMP XSTRT8 /LEAVE THIS ORPHAN ALONE
AND (1000 /DO WE NEED AN ACCEPT ?
IOF
SNA CLA /SKIP IF WE HAVE TO SEND CONNECT CONFIRM OR DISCONNECT
JMP XSTRT2 /NO, TRY SOMETHING ELSE
NL2000
AND I DDBSTS
SNA CLA
JMP XSDIS0
TAD I DDBSTS /GET STATUS
AND (6777 /TURN OFF NEED-TO-ACCEPT BIT
DCA I DDBSTS /UPDATE STATUS
JMS XSTMSG /SET UP TO SEND A MESSAGE
JMS FEAPNT /POINT TO FEATURES
TAD (10 /NCT
JMS NCSBEG /PUT OUT BEGINNING
JMP XS1CON /CONTINUE OVER PAGE
PAGE
XS1CON, /CONTINUATION OF PREVIOUS PAGE
TAD (12 /LENGTH OF CONNECT (EXCLUSIVE OF FEATURES)
/NOTE: ASSUMES EXTENSIBLE FIELDS ALWAYS SENT AS TWO BYTES
TAD I TEMP2 /ADD FEATURE LENGTH
JMS SNDEXN /SEND COUNT (EXTENSIBLE NUMBER)
NL1 /CONNECT=1
JMS SNDCHR /TYPE
JMS NCSDLA /SEND DLA
TAD TEMPB /OUR LINK VALUE
JMS SNDCHR /SLA
JMS SNDCHR /DEST OBJ TYPE
JMS SNDCHR /DEST PID
JMS SNDOBJ /SEND OBJECT TYPE
NLM1 /GET ADDRESS OF DEVICE NUMBER
TAD DDB /WHICH IS ONE BEFORE START OF DDB
DCA TEMP1 /STORE ADDRESS
TAD I TEMP1 /GET DEVICE NUMBER
JMS SNDCHR /PID
TAD TEMPB /GET OUR INDEX
TAD (MMLTAB-1 /INTO MMLTAB
JMS SNDEXN /SEND AS TWO BYTE FIELD
TAD TEMP2
DCA TEMP3
TAD I TEMP2 /GET COUNT
NEGATE
DCA TEMP2
ISZ TEMP3
TAD I TEMP3 /GET NEXT CHAR
JMS SNDCHR
ISZ TEMP2
JMP .-4
JMP FINMSG /FINISH SETTING UP MESSAGE
XSTRT2, TAD I DDBSTS
AND (OUTBIT+TTYBIT /MASK FOR OUTPUT DEVICES
SNA /SKIP IF EITHER OUTPUT OR TTY
JMP XSTRT3 /NEITHER, SEE IF MESSAGE TO BE SENT
AND (TTYBIT /SEE IF TTY
SZA CLA /SKIP IF NOT (I.E. OUTPUT)
JMP XSTRT4 /DEVICE IS A TTY SO DO TTY STUFF
JMS XDRQ /SEND DATA REQUEST IF NECESSARY
JMP XSTRT7 /WON'T RETURN IF DATA REQUEST SENT
XDRQ, 0
NLOAD DEVCHK /POINT TO CHUNK COUNT
TAD DDB
DCA TEMP3
TAD I TEMP3 /GET CHUNK COUNT
SMA CLA /ONLY SEND DATA REQUEST IF MINUS
JMP I XDRQ /RETURN
NLOAD DEVDRQ /ADDRESS OF DATA REQUEST COUNT WITHIN DDB
TAD DDB /DDB ADDRESS
DCA TEMP3 /STORE
NLM2 /MAXIMUM DATA REQUESTS OUTSTANDING
TAD I TEMP3 /GET DATA REQUEST COUNT
SMA CLA /SKIP IF WE DON'T HAVE ENOUGH OUTSTANDING
JMP I XDRQ /RETURN
ISZ I TEMP3 /INCREMENT REQUEST COUNT
JMS XSTMSG
TAD (50 /INTERRUPT NCT
JMS NCSBEG /BEGINNING OF MESSAGE
NL4 /COUNT ASSUMES DLA IS 2 BYTE FIELD
JMS SNDCHR /COUNT
NL6 /DATA REQUEST
JMS SNDCHR /TYPE
JMS NCSDLA /DLA
NL1 /REQUEST
JMS SNDCHR /DRQ
JMP FINMSG
/HERE TO SEND A MESSAGE TO DECSYSTEM-10 ON BEHALF OF CDR OR PTR
XSTRT3, TAD (DEVBF1
TAD DDB
DCA TEMP4
TAD I TEMP4
SNA
JMP XSTRT7 /NO DATA TO SEND TO THE 10
DCA TEMP3 /SAVE POINTER TO BEGINING OF STRING
JMS XSTMSG /SET UP TO SEND A MESSAGE
TAD (10 /NCT
JMS NCSBG /BEGINNING MINUS DLA
JMS NCSDLA /DLA
SKP
JMS SNDCHR /PUT INTO MESSAGE
JMS GETCHR /GET THE NEXT CHARACTER
SKP
JMP .-3
TAD I TEMP4 /GET CHUNK STRING ADR AGAIN
JMS FRECKS
DCA I TEMP4
JMP FINMSG /FINISH OFF MESSAGE
XSTRT0, 0
TAD (CTLBUF /POINT TO START OF CONTROL MESSAGE
DCA AUTO1 /ASSUME WILL BE UNNUMBERED
CRCXI3, DCA CRC1 /CLEAR CRC ########
DCA CRC2
TAD [ENQ /FIRST CHAR INTO CRC
JMS CRCALC /CALCULATE CRC
JMP I XSTRT0
XDISBG, 0 /SUBR TO BEGIN DISCON OR CONF
JMS XSTMSG /START OF DISCONNECT
TAD (10 /MAKE NCT
JMS SNDCHR /NCT
TAD DISSNA
JMS SNDCHR /DNA
Z=OURNNM&177
TAD (Z
JMS SNDCHR /SNA
JMS SNDCHR /NCA
JMS SNDCHR /NCN
JMS SNDCHR /DLA
JMP I XDISBG /RETURN
PAGE
XSTRT4, JMS XSTMSG
TAD (50
JMS NCSBG
JMS NCSDLA
TAD [DEVDDC
TAD DDB
DCA TEMP7
TAD (DEVBF1 /ADR OF BUFFER
TAD DDB
DCA TEMP6
JMS RECI42 /PUT STATUS INTO MESSAGE
TAD DDB
DCA TEMP4 /SAVE ADR OF DDCMP ADR
/HERE TO THINK ABOUT SENDING CHARACTERS TO THE 10
XSTTRD, TAD I TEMP6 /GET DATA ADR(IF ANY)
SNA /IS THERE ANY ?
JMP XSTTDN
DCA TEMP3 /SAVE ADR OF 1ST CHUNK
JMS GTCHR /GET THE CHARACTER COUNT
TAD TEMP5
TAD (-MAXOLN+20
SMA CLA /ROOM ENOUGH FOR THIS DATA ?
JMP XSTTDN /NOT NOW SEND WITH THE NEXT MESSAGE
TAD I TEMP3 /GET THE CHARACTER COUNT AGAIN
JMS SNDCHR /PUT THE CHAR INTO THE MESSAGE
JMS GETCHR /GET THE NEXT CHARACTER, IF ANY
SKP
JMP .-3
TAD I TEMP6 /GET FIRST CHUNK ADR AGAIN
JMS FRECKS /AND RELEASE THE CHUNKS
DCA I TEMP6 /CLEAR DEVBF1
ISZ TEMP6 /ADVANCE TO DEVBF2
DCA I TEMP6 /CLEAR DEVBF2
/HERE TO SEND AN ECHO-PIPELINE-MARKER(MAYBE)
NL1 /MASK FOR DEFERRED ECHO MODE
AND I TEMP7 /SEE IF WE ARE IN THAT WAY
SNA CLA /SKIP IF TRUE
JMP XSTTDN
NL3 /COUNT
JMS SNDCHR
NL4 /TYPE
JMS SNDCHR
JMS SNDCHR
TAD (LDBEPL /OFFSET FOR PIPELINE MARKER
TAD DDB
DCA TEMP1 /SAVE POINTER TO MARKER
ISZ I TEMP1 /ADVANCE MARKER
TAD I TEMP1 /GET IT IF NOT ZERO
AND [0177 /7 BITS ONLY PLEASE
JMS SNDCHR /PUT MARKER INTO THE MESSAGE
/HERE WHEN DONE WITH A LINE
XSTTDN, ION
TAD TEMP5 /GET CURRENT MESSAGE SIZE
TAD (-MAXOLN+20 /COMPARE TO MAX
SMA CLA
JMP FINMSG /SEND MESSAGE AS IS
TAD (-7
TAD TEMP5 /GET MESSAGE SIZE
SZA CLA /TEST FOR REAL MESSAGE
JMP FINMSG /REAL SO SEND MESSAGE
JMS XDRQ
JMP XSTRT8 /NOT REAL SO DON'T SEND IT
XSDIS0, JMS XSTMSG
TAD (50
JMS NCSBEG
TAD [5
JMS SNDCHR /COUNT
NL2
JMS SNDCHR /TYPE=DISCONNECT
JMS NCSDLA /DLA
TAD TEMPB
JMS SNDCHR /SLA
JMS SNDCHR /REASON=0
TAD TEMPB /INDEX
TAD (RCVDSP
DCA TEMPB
TAD (RCVKRD
DCA I TEMPB
TAD (6777 /ALL EXCEPT ACCEPT BIT
AND I DDBSTS /GET REST OF STATUS BITS
DCA I DDBSTS /STORE THEM BACK
JMP FINMSG
RCVRQC, TAD CONSNA /SEE IF WE'VE GOT ONE PENDING
SZA CLA /SKIP IF NOT
HLT
TAD RSNA /GET SNA
DCA CONSNA /INDICATE WE NEED TO SEND CONF
JMP RCVFLU
XSCONF, TAD CONSNA /HERE TO SEND CONF: GET SNA
DCA DISSNA /STORE FOR SUBROUTINE
DCA CONSNA /CLEAR CONSNA
JMS XDISBG /DO START OF MESSAGE
TAD (CNF /POINT TO DATA PART OF MESSAGE
DCA TEMPC /SAVE ADDRESS
TAD I TEMPC /GET COUNT
IAC /INCLUDE ITSELF
NEGATE /FOR ISZ
DCA TEMPB /LOOP CONTROL
XSCNF1, TAD I TEMPC /GET NEXT CHARACTER
ISZ TEMPC /POINT TO NEXT ONE
JMS SNDCHR /PUT INTO MESSAGE
ISZ TEMPB /CHECK IF DONE
JMP XSCNF1 /NO, CONTINUE
JMP FINMSG /END IT
PAGE
XDISCN, JMS XDISBG /SEND BEGINNING OF MSG
TAD [5 /COUNT
JMS SNDCHR /COUNT
NL2
JMS SNDCHR /TYPE=DISCONNECT
TAD DISSLA /GET LINK WHO REQUESTED CONNECT
JMS SNDEXN /DLA
JMS SNDCHR /SLA=0
TAD DISREA /PICK UP REASON
JMS SNDCHR /RSN
DCA DISREA /CLEAR REASON
JMP FINMSG /FINISH MESSAGE
/HERE TO SEE IF WE NEED TO SEND A STATUS MESSAGE TO THE 10
XSTRT7, NL1 /MASK FOR NEED TO SEND STATUS BIT
AND I DDBSTS
SZA CLA /SKIP IF WE DON'T NEED TO SEND STATUS
JMP SNDSTS /SEND STATUS TO THE 10
XSTRT8, ION
TAD (DEVLNK
TAD DDB
DCA DDB
TAD I DDB /GET ADR OF NEXT DDT
SZA /SEE IF THERE IS ONE
JMP XSTRT1 /CHECK IT FOR POSSIBLE SERVICE
XSTRT9, JMS XSTRT0
TAD RECVOK
SPA CLA
JMP SNDACK /CHECK FOR NEED ACK
/HERE TO SEND A REP MESSAGE
SNDREP, JMS CKREPT /CHECK REP TIMER
NLOAD REP
JMS SNDCHR /2ND CHAR IS REP
SNDRP3, JMS SNDFIL
JMS SNDFIL /3RD & 4TH ARE FILLS
SNDRP5, TAD T10HSN
JMS SNDCHR /5TH CHAR IS HIGHEST MSG # SENT
JMP SNDAK6 /REST IS LIKE AN ACK MSG
/HERE TO SEE IF REP TIMER HAS GONE OFF
CKREPT, 0
TAD REPTCK
SPA CLA
JMP LOOP30 /IF STILL COUNTING DON'T SEND
TAD (-REPTIM
DCA REPTCK /RESET TIMER
JMP I CKREPT
SNDSTS, NL7776 /MASK TO CLEAR NEED TO SEND STATUS BIT
AND I DDBSTS /CLEAR BIT FROM WORD
DCA I DDBSTS /SAVE UPDATED WORD
JMS XSTMSG /BEGIN BUILDING MESSAGE
TAD (50 /NCT FOR STATUS MESSAGE
JMS NCSBG /BEGINNING OF DEVICE CONTROL MSG
JMS NCSDLA /DLA
NL4 /COUNT
JMS SNDCHR
NL3 /TYPE
JMS SNDCHR
JMS SNDCHR
TAD [DEVDDC
TAD DDB
DCA TEMP3
TAD I TEMP3
AND [0177 /STRIP EXTRA BITS
TAD [0200 /ADD EXTENSIBLE BIT
JMS SNDCHR
TAD I TEMP3 /GET HIGH ORDER BITS OF STATUS WORD
IFZERO PDP8I <
CLL RTR /CAN'T USE RTL
CLL RTR /BECAUSE INTERRUPT
CLL RTR /ZAPS LINK
>
IFZERO PDP8E <
BSW
>
CLL RAR
AND (0037 /CLEAR EXTRA BITS
JMS SNDCHR
JMP FINMSG /SEND MESSAGE
/TEMP CONVENTIONS WHEN BUILDING MESSAGES
/ TEMP5 IS COUNT OF DATA PORTION
XSTMSG, 0
ION
CRCXI4, DCA CRC1 /CLEAR 1ST HALF OF CRC ########
DCA CRC2 /CLEAR 2ND HALF OF CRC
TAD T10PTR /POINTER TO NEW MESSAGE
TAD [7 /MAKES POINTER TO DATA
DCA AUTO1
DCA TEMP5
JMP I XSTMSG
FINMSG, /END UP MESSAGE
TAD CRC2 /GET LOW PART OF CRC
DCA I AUTO1
TAD CRC1 /GET HIGH PART OF CRC
DCA I AUTO1
TAD T10PTR
DCA AUTO1
TAD TEMP5 /GET SIZE OF MESSAGE
DCA I AUTO1 /PUT INTO HEADER
TAD TEMP5 /GET MESSAGE SIZE AGAIN
CLL RTR
CLL RTR
CLL RTR
CLL RTR
AND (0017 /ONLY 4 BITS ARE REAL
DCA I AUTO1 /PUT REST OF COUNT IN
ISZ AUTO1 /SKIP RESPONSE FIELD
TAD T10HSN /GET HIGHEST MESSAGE NUMBER SENT SO FAR
JMS COUNT
DCA T10HSN
TAD T10HSN
DCA I AUTO1 /PUT MESSAGE NUMBER INTO HEADER
T10ADJ T10PTR
JMP LOOP /BACK TO BIG LOOP AND THEN SEND MESSAGE
PAGE
/HERE TO SEND A STACK MESSAGE
SNDSTK, TAD STACKF /GET START-STACK FLAG
IAC
SPA CLA /SKIP TO SEND A STACK
JMP SNDSRT /NEED TO SEND A START
DCA STACKF /DONE WHEN HAVE RESPONDED
TAD (STACK
JMS SNDCHR /2ND CHAR IS STACK
JMS SNDFIL /3RD CHAR IS A FILL
JMS SNDCHR /4TH CHAR IS A FILL
SNDSK5,
JMS SNDCHR /5TH CHAR IS A FILL
JMP SNDAK6 /6TH IS DEST STA ADR
/HERE TO SEND A START MESSAGE
SNDSRT, JMS CKREPT /CHECK REP TIMMER
TAD (STRT
JMS SNDCHR /2ND WORD IS START
JMS SNDFIL
JMS SNDFIL /3RD & 4TH ARE FILLS
JMP SNDSK5 /REST IS LIKE A STACK
/HERE TO SEND A NAK MESSAGE
SNDNAK, NLOAD NAK
JMS SNDCHR /2ND CHAR IS A NAK
TAD NAKFLG
JMS SNDCHR /3RD IS REASON
DCA NAKFLG /CLEAR NAK FLAG
JMP SNDAK4 /REST IS LIKE AN ACK MSG
/HERE TO SEND AN ACK MESSAGE
SNDACK, NL3777
AND RECVOK
DCA RECVOK /CLEAR NEED ACK FLAG
NLOAD ACK
JMS SNDCHR /2ND CHAR IS ACK
JMS SNDFIL /3RD IS FILL
SNDAK4, TAD RECVOK
JMS SNDCHR /4TH IS LAST GOOD MSG #
JMS SNDFIL /5TH CHAR IS FILL
/HERE TO PUT DESTINATION STATION ADR AND CRC ON MESSAGE
SNDAK6, NL1
JMS SNDCHR /6TH CHAR IS ALWAYS 1
TAD CRC2 /GET LOW PART OF CRC
DCA I AUTO1 /PUT HALF OF CRC IN MSG
TAD CRC1 /GET HIGH PART OF CRC
DCA I AUTO1 / DITTO
IFNZRO DP8ETR <
JMS OTR /TRACE MESSAGE
>/END OF IFNZRO DP8ETR
NLM2
DCA T10FLG
JMP LOOP /FLAG FOR XMITTER
/HERE TO PUT A FILL CHARACTER INTO A MESSAGE
SNDFIL,
/HERE TO PUT A CHAR INTO A MESSAGE
SNDCHR, 0
AND [0377 /STRIP EXTRA BITS IF ANY
DCA TEMP1 /SAVE COPY OF CHAR
TAD TEMP1 /GET CHAR AGAIN
DCA I AUTO1 /PUT CHARACTER INTO MESSAGE
TAD TEMP1 /GET CHARACTER AGAIN
JMS CRCALC /PUT INTO CRC CALCULATION
ISZ TEMP5 /COUNT CHAR
JMP I SNDCHR
JMP I SNDCHR
/HERE TO SKIP AN EXTENSIBLE FIELD
/ CALL JMS SKPEXN WITH TEMP3 POINTING TO THE STRING OF CHUNKS
SKPEXN, 0
JMS GTCHR
AND (0200 /CHECK EXTENSIBLE BIT
SZA /SKIP IF DONE
JMP SKPEXN+1 /OTHERWISE CONTINUE
JMP I SKPEXN /RETURN
SNDEXN, 0 /SEND EXTENSIBLE NUMBER
/ NOTE: ALWAYS SENDS TWO BYTE EXTENSIBLE NUMBER, SINCE
/ OTHERWISE TOO HARD TO CALCULATE COUNTS.
DCA TEMPD /SAVE IT
TAD TEMPD /GET IT AGAIN
AND [177 /TURN OFF ALL BUT BOTTOM SEVEN
TAD (200 /TURN ON EXTENSIBLE BIT
JMS SNDCHR /SEND LOW BITS
TAD TEMPD /GET CHARACTER
AND (7600 /TURN OFF BOTTOM 7 BITS
IFZERO PDP8I <
CLL RTR /CAN'T USE RTL THRU LINK
CLL RTR
CLL RTR
>
IFZERO PDP8E <
BSW
>
CLL RAR
JMS SNDCHR /SEND HIGH BITS
JMP I SNDEXN /RETURN
/HERE TO SEND A NUMBERED MESSAGE TO 10
SNDMSG, NLM1
TAD T10TKR
DCA T10NCA /ADR OF BUFFER
TAD T10TKR
DCA AUTO1
TAD I AUTO1 /GET LENGTH OF DATA
TAD (12
NEGATE
DCA T10NWC /SET WC FOR BLOCK
CRCXI5, DCA CRC1 / ########
DCA CRC2 /INITIALIZE THE CRC
TAD T10TKR
DCA AUTO1 /POINTER TO HEADER
TAD (SOH
JMS CRCALC /FIRST CHAR IS ALWAYS SOH
TAD I AUTO1
JMS CRCALC /2ND IS HALF OF LENGTH
TAD I AUTO1
JMS CRCALC /3RD IS HALF OF LENGTH
TAD RECVOK
JMS SNDCHR /4TH IS LAST # RECEIVED
TAD I AUTO1 /5TH CHAR IS MESSAGE NUMBER
JMS CRCALC /PUT INTO CRC
T10ADJ T10TKR
JMP SNDAK6 /REST IS LIKE AN ACK
SECOND, DCA SECFLG
NL6000 /LIMIT # OF SPURIOUS INTERRUPTS
DCA INTCNT / PER SECOND
/ JMP SECSYN /GO DO ONCE A SECOND STUFF
SECSYN, JMP SECDP /CHECK SYNCHRONOUS INTERFACE
/HERE TO INCREMENT A MSG NUMBER
/ CALL JMS COUNT /WITH MSG # IN AC
/ RETURN /WITH MSG#+1 IN AC
COUNT, 0
IAC
AND [0377
JMP I COUNT
PAGE
LISTOG FTDP01
IFNZRO FTDP01 <
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** DP01 MODEM HANDLING ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/HERE TO SEE IF SYNCHROUS MODEM HAS INTERRUPTED
INTMOD, DPSEF /SKIP ON RECEIVE END FLAG
JMP INTMD2
DPSRI /SKIP ON RING INDICATOR
JMP INTMD5
JMP INTMO9 /NOT MODEM SO CHECK FOR MEMORY PARITY
INTMD2, DPCEF /CLEAR END FLAG
TAD (ENDMSG
DCA ERRFLG /LEAVE MSG FOR OPERATOR
JMP INTDIS
INTMD5, DPCRF
DPSTR
JMP INTDIS
SECDP=IRMA /NO ONCE/SEC STUFF FOR DP01
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** DP01 INPUT PROCESSING ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/HERE AT INTERRUPT LEVEL TO SEE IF DP01 HAS INTERRUPTED
INTDPX, DPSRF /SKIP ON NOT DP01 RECEIVE FLAG
JMP INRC00 /YES
DPSTF /SKIP ON NOT TRANSMIT FLAG
JMP INTN00 /GO SERVICE TRANSMIT INTERRUPT
JMP INTDP9 /NOT DP01
/HERE AT INTERRUPT LEVEL TO HANDLE DP01
INRC00, DPRRB /GET CHARACTER FROM DP01
DCA INTMP1
TAD INTMP1 /GET CHAR
ISZ F10CA /ADVANCE BUFFER ADR
DCA I F10CA /SAVE CHAR IN BUFFER
IFNZRO FTDEBUG <
TAD (-SYN
TAD INTMP1
SNA CLA
JMP INRC04
NL4000
TAD INTMP1 /GET CHARACTER RECEIVED
JMS TRACEW /PUT WORD INTO THE TRACE
INRC04,
>/END OF IFNZRO FTDEBUG
JMP I INRCPV /DISPATCH TO CORRECT ROUTINE
/HERE WHEN RECEIVE INPUT ON INACTIVE LINE
INRC10, NLM1 /SET UP NEW CA IN CASE CHAR WAS UNINTERESTING
TAD RCVPTR
DCA F10CA
/DON'T NEED TO DO ANYTHING ABOUT WC FOR DP01
JMS INRC50 /SEE IF CHAR WAS SPECIAL
INRC12, /DON'T RETURN IF NOT SPECIAL
TAD (-F10TCH
TAD INTMP3 /GET CHAR NUMBER WHICH WE FOUND
TAD (JMP I INRC16
DCA .+1
0
INRC16, INTP00
INTP10
INTP20
INTP30
/HERE WHEN RECEIVING AN UNNUMBERED MESSAGE
INRC20, ISZ F10WC
JMP INTDIS
JMP I .+1
INTP40
/INRC40=INTDIS /NOT NECCESSARY TO ENABLE INPUT
/HERE TO SEE IF LAST CHAR RECEIVED WAS SPECIAL
/CALL JMS INRC50
/ RETURN IF CHAR WAS SPECIAL(ELSE JMP INTDIS)
INRC50, 0
TAD INTMP1 /GET THIS CHAR
TAD (-SYN
SNA CLA
JMP INTDIS /IGNORE SYNCHS
TAD INTMP1 /GET RECEIVED CHAR
NEGATE /FOR TEST FOR SPECIAL CHARS
DCA INTMP2
TAD [F10TCH
DCA INTMP3
TAD (-4
DCA INTMP4
CDFINS /TABLE IS IN FIRST FIELD
INRC53, TAD I INTMP3
TAD INTMP2
SNA CLA /HAVE WE FOUND A MATCH ?
JMP INRC54 /YES SO RETURN TO CALLER
ISZ INTMP3 /ADVANCE TO NEXT CHAR
ISZ INTMP4 /HAVE WE CHECKED ENOUGH ?
JMP INRC53 /NO
TAD INRC50
TAD (-INRC12
SNA CLA /ARE WE RECEIVING MSG ?
DPCRA /CLEAR RECEIVER ACTIVE
CDFCNK /SET NORMAL DATA FIELD
JMP INTDIS /DISMISS INTERRUPT
INRC54, CDFCNK
JMP I INRC50
/HERE WHEN RECEIVING DATA FROM A NUMBERED MESSAGE
INRC70,
ISZ F10WC
JMP INRC75 /ENOUGH ROOM GO SEE IF CHAR IS SPECIAL
NL4000 /FLAG LAST CHAR IN BUFFER
TAD INTMP1 /GET CHAR
DCA I F10CA /PUT CHAR+FLAG IN CHUNK
TAD F10CA /LAST ADR IN CHUNK
AND [-CNKSIZ /LEAVES 1ST ADR IN CHUNK
DCA INTMP2 /SAVE IT
TAD F10TWC
SNA CLA
JMP INTP60
INRC80, JMS IGTCNK
JMP INTP60 /PRETEND F10TWC EXHAUSTED
DCA I INTMP2
ISZ I CNTPNT /INCREASE CHUNK COUNT
TAD I INTMP2
DCA F10CA
TAD F10TWC
TAD (1-CNKSIZ
SPA
JMP INRC83
DCA F10TWC
TAD (1-CNKSIZ
DCA F10WC
INRC75,
JMP INTDIS
INRC83, NL0
TAD F10TWC
NEGATE
DCA F10WC
DCA F10TWC
JMP INRC75
PAGE
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** DP01 OUTPUT PROCESSING ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/HERE AT INTERRUPT LEVEL TO HANDLE DP01 OUTPUT
/HERE WHEN LINE IS IDLING
INTN00, ISZ T10CA /ADVANCE CURRENT ADDRESS
TAD I T10CA /GET THE NEXT CHAR TO SEND
DPTAC DPCTF /SEND CHAR AND CLEAR TRANSMIT FLAG
NOP /DPCTF SKIPS SOMETIMES
IFNZRO FTDEBUG <
AND [0377 /BE SURE 8BITS ONLY
TAD (-IDLE
SNA
JMP INTN01
TAD (IDLE
JMS TRACEW /PUT WORD INTO THE TRACE
>/END OF IFNZRO FTDEBUG
INTN01, NLM3
DCA T10CLK
ISZ T10WC /COUNT THIS DATA
JMP INTDIS /DISMISS INTERRUPT
/HERE WHEN CURRENT TRANSMIT BUFFER IS EMPTY
NL0
TAD T10FLG
SNA
JMP INTN99 /IDLING
SMA CLA
JMP INTN10 /WE ARE SYNCHING LINE
ISZ T10FLG /DID WE JUST COMPLETE A MESSAGE ?
JMP INTN20 /NO WE ARE JUST READY TO BEGIN
NLM1 /WE JUST FINISHED A MESSAGE(DAT ACK ETC)
DCA WRKREQ /WAKE NONINTERRUPT LEVEL CODE
ISZ T10FLG /STATE IS NOW SYNCHING = 1
INTN10, TAD (SYNBUF-1 /4 SYNCHS
DCA T10CA
TAD [-NUMSYN
DCA T10WC
JMP INTDIS
/HERE TO BEGIN A MESSAGE
INTN20, TAD T10NCA /ADR OF NEXT BUFFER TO SEND
DCA T10CA
TAD T10NWC /LENGTH OF NEW BUFFER
DCA T10WC
JMP INTDIS
/HERE WHEN LINE IS IDLING
INTN99, TAD (IDLBUF-1
DCA T10CA
TAD [-NUMSYN
DCA T10WC
JMP INTDIS
>/END OF IFNZRO FTDP01
LISTOG 0
IFZERO FTDP01 <
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** DP8E MODEM HANDLING ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
INTMOD, DPSSRG /SKIP IF RING FLAG SET
JMP INTMD5
ISZ RNGCNT
JMP INTDIS
RNGCNT, 0
INTMD5, DPSSBE /SKIP ON BUS ERROR
JMP INTMD7
ISZ BERCNT /COUNT BUS ERROR
TAD (DBEMSG-1 /IF WE GET 4096 BUS ERRORS THIS WILL
/ BE SKIPPED (WHAT ME WORRY ?)
JMP INTMD8 /TYPE MESSAGE THEN JMP INTDIS
BERCNT, 0 /COUNT OF BUS ERROR COUNTS
INTMD7, DPSSCA /SKIP IF CARRIER FLAG FLIPPED
JMP INTMO9 /NOT MODEM SO ON DOWN SKIP CHAIN
DPSRS2
SMA CLA /SKIP ON CARRIER
TAD (LCRMSG-CARMSG /WE HAVE LOST CARRIER
TAD (CARMSG-1
INTMD8, DCA ERRFLG /LEAVE MSG FOR OPERATOR
JMP INTDIS
/HERE ONCE PER SECOND TO CHECK MODEM
SECDP, DPSRS1 /GET STATUS 1
DCA DPSTS1
DPSRS2
DCA DPSTS2
JMP IRMA
DPSTS1, 0
DPSTS2, 0
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** DP8E INPUT PROCESSING ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/HERE TO SEE IF RECEIVER HAS INTERRUPTED
INTDPX, DPSSCD /SKIP IF SPECIAL CHAR DETECTED
SKP /NO
JMP INRC00 /WAS A SPECIAL CHARACTER
DPSSRO /SKIP ON RECEIVE WC OVERFLOW
JMP INTDPO /NOT RECEIVER SO TRY TRANSMITTER
JMP I INRCPV /WC OVERFLOW ON RECEIVER
/WC OVERFLOW WHILE RECEIVER IS IDLE
INRC10, DPSSCD /WAS IT A SPECIAL CHAR ?
JMP INRC11 /NO
/HERE FOR SPECIAL CHAR INTERRUPT
INRC00, DPSRCD /GET INDEX OF CHAR WHICH INTERRUPTED
TAD [F10TCH /ADD ADR OF TABLE OF SPECIAL CHARS
DCA INTMP1 /TO ADDRESS THIS SPECIAL CHAR
TAD INRCPV
TAD [-INRC10
SZA CLA /ARE WE IN STATE A (IDLE)?
JMP INTDIS /NO SO IGNORE INTERRUPT
DPSSRO
NOP
CDFINS
TAD I INTMP1 /GET SPECIAL CHAR FROM TABLE
CDFCNK
NEGATE
TAD I RCVPTR /GET SPECIAL CHAR AS RECEIVED
SZA CLA /ARE THEY THE SAME ?
JMP INRC01 /THIS IS EITHER A HDW PROBLEM
/ OR WE ARE TAKING TOO LONG TO SERVICE INTERRUPTS
TAD INTMP1 /GET F10TCH+INDEX
ZZ=JMP I INRC02
ZZ=ZZ-F10TCH
TAD (ZZ
DCA .+1
7402 /MODIFIED BY PROGRAM
INRC02, INTP00
INTP10
INTP20
INTP30
INERRC, 0 /COUNT OF SP. CHAR ERRORS
INRC01, ISZ INERRC /COUNT ERROR
JMP INTDIS /DISMISS INTERRUPT
/WC OVERFLOW ON UNNUMBERED MSG
INRC20, DPSSCD /CLEAR CHAR DETECTED FLAG
JMP INTP40
JMP INTP40
/HERE WITH WC OVERFLOW WHILE IDLE
INRC11, CDFINS
TAD I [F10CA
CDFCNK
DCA INTMP1
TAD I INTMP1 /GET LAST CHAR
TAD [-SYN
SZA CLA /WAS RANDOM CHAR A SYNC ?
DPSCSD / NO - SO CLEAR SYNC DETECT
JMS I [INRCID /RESET WC AND CA
/ JMP INRC40 /SET RECEIVER RDY, THEN JMP INTDIS
/
/INRC40, DPSSRO /SKIP IF RECEIVE WC OVERFLOW
/ NOP
/ DPSSCD /SKIP ON SPECIAL CHAR
/ / IN CASE GOT HERE FOR FUNNY REASON
/ NOP
DPSGRR /ENABLE INPUT
JMP INTDIS
/WC OVERFLOW ON NUMBERED MSG DATA
INRC70, CDFINS
TAD I [F10CA /GET ADR OF LAST CHAR
CDFCNK
DCA INTMP1
NL4000
TAD I INTMP1
DCA I INTMP1
TAD INTMP1 /ADR OF LAST DATA IN CHUNK
AND [-CNKSIZ /MAKES ADR OF LINK
DCA INTMP2
TAD I INTMP2
SZA CLA
HLT
TAD F10TWC
SNA CLA /MIGHT THERE BE MORE IN MESSAGE ?
JMP INTP60 /NO
INRC80, IFNZRO FTDEBUG <
TAD I INTMP2 /GET LINK WORD IN LAST CHUNK
SZA
HLT
>/END OF IFNZRO FTDEBUG
JMS IGTCNK /TRY TO GET ANOTHER CHUNK
JMP INTP60 /NO SO PRETEND WC EXHAUSTED
DCA I INTMP2 /SET LINK IN PREVIOUS CHUNK
ISZ I CNTPNT /INCREMENT NUMBER OF CHUNKS
TAD I INTMP2
CDFINS
DCA I [F10CA
TAD F10TWC
TAD [1-CNKSIZ
SPA
JMP INRC83
DCA F10TWC
TAD [1-CNKSIZ
DCA I [F10WC
JMP INRC84
INRC83, NL0
TAD F10TWC
NEGATE
DCA I [F10WC
DCA F10TWC
INRC84, CDFCNK
DPSGRR
JMP INTDIS
/ JMP INRC40 /SET RECEIVE RDY, THEN JMP INTDIS
PAGE
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** DP8E OUTPUT PROCESSING ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/HERE AT INTERRUPT LEVEL TO HANDLE DP8E OUTPUT
INTDPO, DPSSTO /SKIP ON TRANSMIT WC OVERFLOW
JMP INTDP9 /NOT DP8E SO TRY CARD READER
TAD I (IDLBUF /IDLE BUFFER IS NEVER WRITTEN
TAD (-IDLE /SO LETS BE SURE IT STILL IS
SZA /SKIP IF OK
HLT /THIS IS VERY LIKELY A HARDWARE FAILURE
/ PLEASE CHECK ECO IS INSTALLED !
/ THE USUAL EXPLANATION FOR THIS FAILURE IS
/ THE DP8E HAS ADDED TO THE TRANSMIT BUFFER THE
/ LAST CHAR RECEIVED, USUALLY SYNC=226
/HERE WHEN CURRENT TRANSMIT BUFFER IS EMPTY
TAD T10FLG
SNA
JMP INTN97 /IDLING
SMA CLA
JMP INTN10 /WE ARE SYNCHING LINE
ISZ T10FLG /DID WE JUST COMPLETE A MESSAGE ?
JMP INTN20 /NO WE ARE JUST READY TO BEGIN
ISZ T10FLG /STATE IS NOW SYNCHING
NLM1 /WE JUST FINISHED A MESSAGE(DAT ACK ETC)
DCA WRKREQ /WAKE NONINTERRUPT LEVEL CODE
INTN10, TAD [SYNBUF-1 /BUFFER OF SYNCHS
JMP INTN98 /SET UP CA, WC AND CLOCK FOR 1 CHAR
/HERE TO BEGIN A MESSAGE
INTN20, TAD T10NCA /ADR OF NEXT BUFFER TO SEND
CDFINS
DCA I [T10CA
TAD T10NWC /LENGTH OF NEW BUFFER
DCA I [T10WC
CDFCNK
TAD T10NWC
CLL CML RAR
INTN21, CLL CML RAR /FOR SPEED .LT. 2400 WILL BE NOP ########
TAD [-3
JMP INTN99
/HERE WHEN LINE IS IDLING
INTN97, TAD (IDLBUF-1
INTN98, CDFINS
DCA I [T10CA
TAD [-NUMSYN
DCA I [T10WC
CDFCNK
SYNCLK=NUMSYN^3 /3 PER CHARACTER
TAD [-SYNCLK /RESET CLOCK ON XMTR
INTN99, DCA T10CLK
DPSGTT /REENABLE XMTR
JMP INTDIS
>/END OF IFZERO FTDP01
XISTOG FTDP01
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** NON-INTERRUPT LEVEL CODE ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/ FIRST SCAN FOR THINGS TO DO LEFT BY INTERRUPT LEVEL CODE
/ THEN DISPLAY CONTENTS OF ADR IN SWITCHES
LOOP, ION
NL0 /RESET INTERRUPTS & AC
TAD CLKFLG
SZA CLA
JMP SCHED /CHECK FOR ONCE PER TICK DUTIES
TAD SECFLG
SZA CLA
JMP SECOND /CHECK FOR ONCE PER SECOND DUTIES
TAD TIQPTR
NEGATE
TAD TIQTKR /CHECK TTY RECEIVE QUEUE
SZA CLA
JMP RECINT /IF ANY RECEIVE STUFF HANDLE IT
TAD RCVTKR
NEGATE
TAD RCVPTR
SZA CLA
JMP RCVCHK /THERE IS INPUT FROM DECSYSTEM-10 WAITING
TAD T10FLG /CHECK SYNCHRONOUS TRANSMIT STATE
SMA CLA
JMP XSTART /IDLE OR SYNCH
LOOP30,
/IDLE - SO DISPLAY DATA ADDRESSED BY CONSOL SWITCHES
CLA OSR /GET CONTENTS OF SWITCHES
DCA TEMP1
TAD TEMP1
TAD DISMIN
SMA
JMP LOOP90
TAD DISMAX /LIMIT TEST FOR DISPLAY FIELD
SPA
JMP LOOP90 /OUT OF RANGE
CLL RTL
CLL RAL
TAD (CDF
DCA LOOP90
LOOP90, CDFINS /INITIALLY DISPLAY INSTRUCTION FIELD
NL0
TAD LOOP90
DCA LOOP99
TAD I TEMP1
IFZERO PDP8E <
MQL /LOAD INTO MQ
TAD I TEMP1 /GET IT BACK
>/END IFZERO PDP8E
LOOP99, 7402
ISZ WRKREQ /DISPLAY 4096 TIMES OR UNTIL INTERRUPTED
JMP LOOP99
CDFCNK /BACK TO NORMAL DATA FIELD
JMP LOOP
/NOTE THAT DISMIN+DISMAX MUST = 0010
DISMIN, 10
DISMAX, 0 /FIRST FIELD WHICH MAY NOT BE DISPLAYED
/HERE ONCE PER CLOCK TICK(UNLESS WE OVERRUN)
SCHED, DCA CLKFLG /MARK WE SAW FLAG
IOF
TAD REPTCK
SPA CLA /ARE WE TIMEING OUT ?
ISZ REPTCK /YES HAVE WE
JMP SCHED2 /NO TO ONE OF ABOVE
SCHED2, ISZ T10CLK /HAS SYNCHRONOUS TRANSMITTER TAKEN TOO LONG ?
JMP SCHED9 /NO
TAD (DPTMSG /SYNCHROUS LINE TIMEOUT MSG
DCA ERRFLG /LEAVE MSG FOR OPERATOR
JMS INISYN /POKE TRANSMITTER
SCHED9, ION
JMP CLKCDR /TO CDR STUFF FIRST
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** COMMON SUBROUTINES ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/HERE TO FREE A CHUNK
/CALL JMS FRECNK (CALL WITH CNK ADR IN AC
/ RETURN
/FRECNK, 0
/ IOF
/ JMS IFRCNK /RELEASE CHUNK
/ ION
/ JMP I FRECNK
/HERE TO FREE A NUMBER OF CHUNKS
/CALL JMS FRECKS (WITH ADR OF FIRST CHUNK IN AC)
/ RETURN
FRECKS, 0
ION
SNA /ANY CHUNKS LEFT ?
JMP I FRECKS /NO SO RETURN TO CALLER
IOF /FOR CALL TO IFRCNK
DCA INTMP1 /SAVE ADR OF THIS CHUNK
TAD I INTMP1 /GET ADR OF NEXT CHUNK
DCA INTMP2 /SAVE IT
TAD INTMP1
JMS IFRCNK /RELEASE THIS CHUNK
ISZ FREDCK /COUNT THIS CHUNK
NOP /SINCE IT MIGHT SKIP
TAD INTMP2 /GET ADR OF NEXT CHUNK IN STRING
JMP FRECKS+1 /LOOP FOR NEXT CHUNK
PAGE
/HERE TO GET A FREE(NOT ERS) CHUNK AT INTERRUPT LEVEL
/ CALL JMS IGTCNK
/ ERROR RETURN
/ RETURN WITH CHUNK ADR IN AC
IGTCNK, 0
NL0
TAD (-ERSCNT
TAD FRECNT
SPA CLA
JMP I IGTCNK /NOT ENOUGH CHUNKS LEFT TO PASS ANY OUT
JMS ERSGET /GET A CHUNK
ISZ IGTCNK
JMP I IGTCNK
/HERE TO GET DDB ADR
/CALL JMS GETDDB (WITH DEVICE # IN AC)
/ RETURN WITH DDB, DDBSTS STEUP & BLOCK ADR IN AC
GETDDB, 0
SPA
HLT
TAD (-DEVN
SMA
HLT
TAD (DDBTAB+DEVN
DCA DDB
TAD I DDB
DCA DDB /SAVE DEVICE BLOCK ADR
NLOAD DEVSTS /RELATIVE ADR OF DEVICE STATUS WORD
TAD DDB
DCA DDBSTS /SAVE ADR OF STATUS WORD
TAD DDB
JMP I GETDDB
/HERE TO GET THE NEXT OUTPUT CHAR FROM CHUNK
/ USES INTMP1 - INTMP4
/CALL PUT DEVICE BLOCK ADR IN INTDDB
/ JMS IGTOCH
/ RETURN IF NONE( AC=0 )
/ RETURN WITH CHAR IN AC
IGTOCH, 0
NLOAD DEVOAD
TAD INTDDB /ADD DEVICE DATA BLOCK ADR
DCA INTMP3
TAD I INTMP3 /GET OUTPUT CHAR COUNT
SNA /DO WE HAVE ANY OUTPUT CHARS ?
JMP I IGTOCH /NO - DISMISS
ISZ IGTOCH /SKIP RETURN TO CALLER
ISZ I INTMP3 /ADVANCE CHAR POINTER
IAC /MAKE ADR OF CURRENT CHAR
DCA INTMP4
TAD I INTMP4 /PICK UP CURRENT CHAR
SMA /ALL DONE WITH CURRENT CHUNK ?
JMP I IGTOCH /NO - EXIT ROUTINE
DCA INTMP2 /SAVE CHARCTER
TAD INTMP4 /CURRENT CHAR POINTER
AND [-CNKSIZ /MAKES POINTER TO LINK WORD
DCA INTMP4
TAD I INTMP4 /GET ADR OF NEXT CHUNK
IFNZRO FTDEBUG <
SNA
JMP .+3
JMS ICNKCK /CHECK CHUNK ADR IS KOSHER
TAD INTMP1 /GET ADR OF CHUNK AGAIN
>/END OF IFNZRO FTDEBUG
DCA I INTMP3 /SET NEW CHAR POINTER
TAD INTMP4 /ADR OF USED CHUNK
JMS IFRCNK /FREE CURRENT CHUNK
NLOAD DEVCHK /DISPLACEMENT OF CHUNK COUNT
TAD INTDDB /PLUS DDB START
DCA INTMP3 /SAVE DEVCHK ADDRESS
NLM1 /DECREMENT
TAD I INTMP3 / CHUNK COUNT
DCA I INTMP3 / AND STORE
TAD INTMP2 /GET CURRENT CHAR AGAIN
JMP I IGTOCH /DONE
/HERE TO GET AN EXTENSIBLE NUMBER USING IGTOCH
IGTEXN, 0
JMS IGTOCH
JMP I IGTEXN /TRY AGAIN LATER
AND [0377
DCA INTMP5 /SAVE LOW ORDER BITS
TAD INTMP5
AND [0200
SNA CLA
JMP IGTEN9 /RETURN
JMS IGTOCH
HLT
CLL RAL /PUT SIGN BIT IN LINK
CLL RTL /CLEAR FORMER SIGN BIT
CLL RTL
IFNZRO FTDEBUG <
SZL /CHECK FOR 200 BIT WHICH SAYES EXTENSIBLE
HLT /CAN'T HACK NUMBERS THAT LARGE !
>/END OF IFNZRO FTDEBUG
CLL RTL
TAD (-200
IGTEN9, TAD INTMP5
ISZ IGTEXN /SKIP RETURN
JMP I IGTEXN
PAGE
IACTCK, 0
DCA INTDDB /SAVE DEVICE BLOCK ADR
NLOAD DEVSTS
TAD INTDDB
DCA IDBSTS
TAD I IDBSTS /GET DEVSTS
SMA CLA /SKIP IF DEVICE IS ACTIVE
JMP INTDIS /DISMISS INTERRUPT
JMP I IACTCK /RETURN TO CALLER
/HERE TO GET A FREE CHUNK AT INTERRUPT LEVEL
/ (-) CYCLES + JMS CYCLES
/CALL JMS ERSGET
/ ERROR RETURN
/ SUCCESS RETURN WITH CHUNK ADR IN AC
ERSGET, 0
NL0
TAD FIRFRE /GET ADR OF 1ST CHUNK
SNA /IS THERE A FIRST CHUNK ?
HLT /MUST NEVER HAPPEN
/ IMPLIES STARTED SOMETHING WE CAN'T FINISH
IFNZRO FTDEBUG < JMS ICNKCK > /BE SURE ADR IS KOSHER
IFZERO FTDEBUG < DCA INTMP1 > /SAVE ADR OF FIRST CHUNK
TAD I FIRFRE /AND GET ADR OF 2ND CHUNK
DCA FIRFRE /SET NEW FIRST FREE CHUNK
DCA I INTMP1 /CLEAR LINK IN THIS CHUNK
NLM1
TAD FRECNT /UPDATE FREE COUNT
IFNZRO FTDEBUG <
SPA
HLT /IT IS ALWAYS POSITIVE
>/END OF IFNZRO FTDEBUG
DCA FRECNT
TAD INTMP1 /GET ADR OF CHUNK WE ARE GETTING
JMP I ERSGET
/HERE TO FREE A CNK
/(12-16) CYCLES + JMS CYCLES
/CALL JMS IFRCNK (CALL WITH CNK ADR IN AC
/ RETURN AC WILL BE 0, LINK UNDEFINED
IFRCNK, 0
IFZERO FTDEBUG <
DCA INTMP1 /SAVE ADR OF CHUNK
>/END OF IFZERO FTDEBUG
IFNZRO FTDEBUG <
JMS ICNKCK /CHECK CHUNK ADR IS KOSHER
>/END OF IFNZRO FTDEBUG
TAD FIRFRE /ADR OF FIRST FREE CHUNK
DCA I INTMP1 /SET LINK IN NEW FIRST CHUNK
TAD INTMP1
DCA FIRFRE
ISZ FRECNT /COUNT FREE CHUNKS
JMP I IFRCNK
HLT
/HERE TO CHECK A CHUNK ADR IS LEGAL
/ CALL JMS ICNKCK /WITH IOF AND ADR IN AC
/ RETURN /(AC)=0 AND ADR OF CHUNK IN INTMP1
ICNKCK, 0
DCA INTMP1 /SAVE CHUNK ADR
TAD INTMP1
AND [CNKSIZ-1
SZA /ALL CHUNKS BEGIN ON EVEN BOUNDRY
HLT /THIS ONE DOESN'T ?
CLL CLA /CLEAR LINK
TAD FIRADR /GET ADDRESS OF FIRST CHUNK
CMA IAC /CONVERT TO NEGATIVE
TAD INTMP1 /GET ADDR OF CHUNK AGAIN
SNL CLA
HLT
JMP I ICNKCK
/HERE TO MARK A DEVICE AS NOT ACTIVE
/ CALL JMS CLRACT /WITH IOF AND INTDDB SETUP
/ RETURN
CLRACT, 0
NLOAD DEVSTS
TAD INTDDB /MAKE ADR OF DEVSTS
DCA INTMP1
NL3777 /MASK TO CLEAR ACTIVE BIT
AND I INTMP1
DCA I INTMP1 /SAVE NEW STATUS WORD
JMP I CLRACT
/HERE TO SET DDCMP STATUS WORD
/ CALL SET UP INTDDB
/ LOAD NEW STATUS INTO AC
/ JMS ISTDDC
ISTDDC, 0
DCA INTMP3 /SAVE NEW DDCMP STATUS WORD
TAD [DEVDDC /OFFSET FOR DDCMP STATUS WORD
TAD INTDDB
DCA INTMP2
TAD I INTMP2
NEGATE
TAD INTMP3 /GET NEW DDCMP STATUS WORD
SNA CLA /ARE THEY DIFFERENT ?
JMP I ISTDDC /NO SO RETURN
TAD INTMP3 /GET NEW STATUS WORD
DCA I INTMP2 /AND SET IT
NLOAD DEVSTS
TAD INTDDB
DCA INTMP1 /SAVE ADR OF STATUS WORD
NL7776 /MASK FOR NEED-TO-SEND-STATUS BIT
AND I INTMP1 /CLEAR IT
IAC /SET IT
DCA I INTMP1 /SAVE IT
JMP I ISTDDC
/HERE TO SET A BIT IN THE DEVDDC WORD
/ CALL JMS ISBDDC /WITH INTDDB SETUP AND BITS IN AC
/ /USES INTMP1 - INTMP4
ISBDDC, 0
DCA INTMP1 /SAVE BITS
NLOAD DEVSTS /RELATIVE ADR OF STATUS WORD
TAD INTDDB
DCA INTMP3 /SAVE ADR OF STATUS WORD
Q=DEVDDC-DEVSTS
NLOAD Q
TAD INTMP3 /MAKES ADR OF DEVDDC
DCA INTMP4 /SAVE ADR OF DEVDDC
TAD I INTMP4 /GET OLD DEVDDC
DCA INTMP2 /SAVE FOR FUTURE REFERENCE
TAD INTMP1 /GET BITS TO SET
CMA /MAKE INTO A MASK
AND I INTMP4 /CLEAR BITS IN DEVDDC
TAD INTMP1 /ADD BITS
DCA I INTMP4 /AND SAVE IN DEVDDC
NL7776 /MASK TO REQUEST STATUS
AND I INTMP3 /CLEAR BIT FROM DEVSTS
IAC /SET BIT
DCA I INTMP3
JMP I ISBDDC
/HERE TO GET THE NEXT CHAR FROM A STRING OF CHUNKS POINTED TO BY TEMP3
/CALL JMS GETCHR
/ RETURN WHEN NO MORE CHARS IN STRING(I.E. TEMP3 NOW 0
/ RETURN WITH CHAR IN AC(WILL BE 11 BITS ONLY)
GETCHR, 0
NL0 /IN CASE AC NONZERO
TAD TEMP3
SNA /IS STRING NULL ?
JMP I GETCHR /YES SO NONSKIP RETURN
AND [CNKSIZ-1
IOF
SNA CLA /ARE WE POINTING TO A LINK WORD ?
JMP GETCH3 /YES
TAD I TEMP3 /GET THE LAST CHAR
SPA CLA /WAS LAST CHAR LAST IN ITS CHUNK ?
JMP GETCH7 /YES SO ADVANCE CHUNKS
IFNZRO FTDEBUG <
NL1
TAD TEMP3
AND [CNKSIZ-1
SNA CLA
HLT
>/END OF IFNZRO FTDEBUG
GETCH3, ISZ TEMP3 /ADVANCE TO NEXT CHAR
NL3777 /STRIP LAST DATA BIT IF PRESENT
AND I TEMP3 /GET NEXT CHAR
ISZ GETCHR /SKIP RETURN
GETCH5, ION
JMP I GETCHR
GETCH7, TAD TEMP3 /GET POINTER TO CURRENT CHAR
AND [-CNKSIZ /MAKE POINTER TO FIRST WORD OF CHUNK
DCA TEMP3
TAD I TEMP3 /GET ADR OF NEXT CHUNK
SNA
JMP GETCH5 /NO MORE CHUNKS SO DONE
IFNZRO FTDEBUG <
JMS ICNKCK /CHECK LINK HAD LEGAL CHUNK ADDRESS
TAD INTMP1
>/END OF INZRO FTDEBUG
DCA TEMP3
JMP GETCH3 /GO GET NEXT CHAR
PAGE
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** CTY SERVICE ***
/ *** GAS FOR LESS ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/HERE AT INTERRUPT LEVEL TO TEST FOR CTY INTERRUPTS
INTCTY, CTYKSF /TYPING SOMETHING?
JMP INTCTO /NOT KEYBOARD - CHECK XMTR
TAD (CTYBLK /ADR OF DEVICE BLOCK
DCA I TIQPTR /SAVE ADR
CTYKRB /READ KEYBOARD & RESET FLAG
/HERE TO PUT CHAR INTO TTI QUEUE AND BE SURE QUEUE IS NOT GARBLED
INTYI9, DCA I TIQPTR /SAVE CHAR
TAD TIQPTR
TAD (1-TTIQUE-TIQLEN
SZA CLA /HAVE WE FILLED THE QUEUE ?
JMP .+3 /NO
TAD (TTIQUE-1
DCA TIQPTR
/NOW CHECK TO SEE QUEUE HASN'T OVERFLOWED
TAD TIQPTR
NEGATE
TAD TIQTKR /HAVE WE FILLED THE QUEUE
SNA CLA
HLT
NLM1
DCA WRKREQ /FIND THIS ASAP
IFNZRO FTDC02F <
JMS ALLSEL /REENABLE ALL LINES
>/END OF IFNZRO FTDC02F
JMP INTDIS
INTCTO, CTYTSF /SKIP ON CTY TRANSMIT FLAG
JMP INTCT9 /NOT CTY - CHECK NEXT DEVICE
TAD (CTYBLK
INTTYX, DCA INTDDB
JMS XMTINT /SEE WHAT IS LEFT TO GO
JMP INTDIS
/ CALL: JMS TTYGO WITH DDB& DDBSTS SETUP
/ RETURN /POSSIBLY WITH GARBAGE IN AC
/HERE AT NONINTERRUPT LEVEL TO START A TTY IF IT WERE INACTIVE
TTYGO, 0
TAD DDB /GET DEVICE BLOCK ADR
IOF
DCA INTDDB /SAVE IT WHERE XMTINT WANTS IT
NL4000
TAD I DDBSTS /MAKE ACTIVE STATUS
SMA
JMP .+3 /EXIT BECAUSE ALREADY ACTIVE
DCA I DDBSTS
JMS XMTINT
NL0 /CLEAR AC
JMP I TTYGO
GTCHR, 0
JMS GETCHR
HLT
JMP I GTCHR
IFNZRO DP8ETR <
OTR, 0 /TRACE OUTPUT MESSAGE
TAD T10NWC /NUMBER OF CHARACTERS
DCA TEMP1 /SAVE FOR LOOP CONTROL
TAD T10NCA /BEGINNING OF MESSAGE
DCA AUTO1 / INTO AUTOINDEX POINTER
OTRL, TAD I AUTO1 /GET NEXT CHARACTER
IOF
JMS TRACEW /TRACE IT
ION
ISZ TEMP1 /SKIP IF FINISHED
JMP OTRL /ELSE CONTINUE
JMP I OTR
>/END OF IFNZRO DP8ETR
DEFINE DISCDE <
DISSND, /SEND DEVICE UNAVAILABLE DISCONNECT
TAD TEMPC /RCVDSP TABLE ENTRY
TAD (-RCVDSP-1+SNATAB/POINT TO SNATAB ENTRY
DCA TEMP1
TAD I TEMP1 /GET DNA
DCA DISSNA /STORE FOR XDISBG
DCA I TEMP1 /CLEAR SNATAB ENTRY
JMS XDISBG /BEGINNING OF DISCONNECT
TAD [5 /COUNT
JMS SNDCHR
NL2
JMS SNDCHR /TYPE=DISCONNECT
TAD TEMPC /RCVDSP ENTRY
>/END OF DEFINE DISCDE
DEFINE DISCD1 <
TAD (-RCVDSP-1+SLATAB/SLATAB ENTRY
DCA TEMP1
>/END OF DEFINE DISCD1
DEFINE DISCD2 <
TAD I TEMP1 /GET DLA
JMS SNDEXN
JMS SNDCHR /SLA=0
TAD TEMPC
TAD (-RCVDSP-1+MMLTAB/MMLTAB HOLDS REASON
DCA TEMP1
TAD I TEMP1
JMS SNDCHR
TAD (RCVKRD /UNUSED VALUE
DCA I TEMPC /INTO RCVDSP
JMP FINMSG
>/END OF DISCD2 DEFINITION
IFZERO TTYN <
DISCDE
DISCD1
DISCD2
PAGE
>/END OF IFZERO TTYN
LISTOG TTYN
IFNZRO TTYN <
LISTOG FTDC02F
IFNZRO FTDC02F <
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** DC02F SERVICE ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
INTTTY, DCA INTMP2 /SET UP FOR A COUNTER
TAD (0010 /SELECT GROUP 1 ONLY
DCMTKF /GET THE KEYBOARD FLAGS
AND DC1MSK /SOME TTY'S WE DON'T CARE ABOUT
IFDEF DC2MSK <
SZA
JMP INTYI2 /ONE OF THESE HAS GONE OFF
TAD (10
DCA INTMP2
NL4 /MASK FOR SECOND GROUP
DCMTKF /GET KEYBOARD FLAGS FOR 2ND GRP
AND DC2MSK
>/END OF IFDEF DC2MSK
IFDEF DC3MSK <
SZA
JMP INTYI2 /ONE OF THESE HAS GONE OFF
TAD (20
DCA INTMP2
NL2 /MASK FOR THIRD GROUP
DCMTKF /GET KEYBOARD FLAGS FOR 3RD GRP
AND DC3MSK
>/END OF IFDEF DC3MSK
SNA
JMP INTTTO
INTYI2, JMS INTTY5
DCA I TIQPTR /SAVE DDB ADR
TAD (17
DCMTON /SELECT NO LINES
NL0
TAD I INTMP3 /GET DDB ADR
TAD [LDBADR
DCA INTMP3
TAD I INTMP3 /GET BITS FOR STATION SELECT
DCMTON /SELECT LINE
NL0 /CLEAR AC AGAIN
DCMKRS DCMKCC
JMP INTYI9 /CHECK TO BE SURE TTI QUEUE IS STILL KOSHER
HLT
/HERE TO TEST FOR POSSIBLE XMT INTERRUPTS
INTTTO,
IFDEF DC3MSK <
NL2 /MASK FOR 3RD GROUP
DCMTPF /GET PRINTER FLAGS
AND DC3MSK
SZA
JMP INTYO2
DCA INTMP2
>/END OF IFDEF DC3MSK
IFDEF DC2MSK <
NL4 /MASK FOR 2ND GROUP
DCMTPF /GET PRINTER FLAGS
AND DC2MSK
SZA
JMP INTYO2
DCA INTMP2
>/END OF IFDEF DC2MSK
TAD (0010 /MASK FOR 1ST GROUP
DCMTPF /GET PRINTER FLAGS
IFNDEF DC2MSK <
AND DC1MSK
>/END OF IFNDEF DC2MSK
SNA /ANY READY
JMP INTTY9 /NO
INTYO2, JMS INTTY5 /CONVERT BIT PATTERN TO LINE INDEX
JMP INTTYX /GO TO XMTINT THEN DISMISS
/ROUTINE TO CONVERT RESULTS OF DCMTKF OR DCMTPF TO A LINE INDEX
INTTY5, 0
SPA
JMP INTTY6
ISZ INTMP2
CLL RAL
JMP INTTY5+1
INTTY6, NL0
TAD INTMP2
TAD (DDBTAB+1
DCA INTMP3
TAD I INTMP3 /GET TTY DDB ADR
JMP I INTTY5
/HERE FROM CODE FOLLOWING XMTINT TO CLEAR ALL OUTPUT FLAGS
TTOFIN, JMS TTOSEL
DCMTCF
JMS ALLSEL /SELECT ALL LINES AGAIN
JMP XMTDIS /DISMISS CALL TO XMTINT
/HERE FROM CODE FOLLOWING XMTINT TO TYPE AN OUTPUT CHAR
INTYPE, JMS TTOSEL
NL0
TAD INTMP6 /GET CHAR TO TYPE
DCMTCF DCMTPC /TYPE IT
JMS ALLSEL /SELECT ALL LINES AGAIN
JMP XMTDIS /DISMISS CALL TO XMTINT
TTOSEL, 0
TAD (17
DCMTON
NL0
TAD [LDBADR
TAD INTDDB
DCA INTMP2
TAD I INTMP2
TAD I INTDDB /GET HDW ADR FOR DC02 LINE
DCMTON
JMP I TTOSEL
PAGE
>/END OF IFNZRO FTDC02F
LISTOG 0
IFZERO FTDC02F <
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** KL8E SERVICE ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
INTYI1, 0
CDFINS
TAD I INTYI1 /GET DDB ADR
SNA /DO WE BELIEVE IN HIM ?
JMP INTYI3 /NO SO FLUSH IT
CDFCNK /BACK TO NORMAL DATA FIELD
DCA I TIQPTR /PUT INTO TTY INPUT QUEUE
NLM3
TAD INTYI1
DCA INTMP1
CDFINS /CHANGE TO INSTRUCTION FIELD
TAD I INTMP1
CDFCNK /BACK TO NORMAL DATA FIELD
TAD [0005 /MAKES A KRB
DCA .+1
0
JMP INTYI9
INTYI3, NLM3
TAD INTYI1 /MAKES ADR OF KRB
DCA INTMP1
NL1 /WILL CONVERT KSF TO KCF
TAD I INTMP1 /MAKES KCF
CDFCNK /BACK TO NORMAL DATA FIELD
DCA .+1
0 /THIS IS A KCF
JMP INTDIS
/HERE WHEN A KL8E LINE HAS AN XMT INTERRUPT
INTYO1, 0
CDFINS /CHANGE DATA FIELD TO PICK UP AN INSTRUCTION
TAD I INTYO1
CDFCNK /BACK TO NORMAL DATA FIELD
JMP INTTYX /POKE XMTINT
/HERE FROM CODE FOLLOWING XMTINT TO CLEAR ALL OUTPUT FLAGS
TTOFIN,
TAD [LDBADR
TAD INTDDB
DCA INTMP2
TAD (7773 /MASK TO MAKE TLS INTO TCF
AND I INTMP2
DCA .+1
0
JMP XMTDIS
/HERE FROM CODE FOLLOWING XMTINT TO TYPE AN OUTPUT CHAR
INTYPE,
TAD [LDBADR /POINT TO ADDRESS FIELD
TAD INTDDB /IN DDB
DCA INTMP2 /STORE ADDRESS OF IOT INSTRUCTION
TAD I INTMP2 /GET IOT
DCA .+2
TAD INTMP6 /GET CHAR
0
JMP XMTDIS
DISSN2, DISCD2
PAGE
DEFINE KSF Q QQ < XLIST
IFDEF QQ < XLIST
Q /SKIP ON KYBD INTERRUPT
JMP .+3
JMS I [INTYI1 /KYBD INTERRUPT
QQ /ADR OF DDB
XLIST >/END OF IFDEF QQ
XLIST >/END OF DEFINE KSF
INTTTY, KSF T00KSF,T00BLK /TEST FOR KYBD ON LINE 0
KSF T01KSF,T01BLK /TEST FOR KYBD ON LINE 1
KSF T02KSF,T02BLK /TEST FOR KYBD ON LINE 2
KSF T03KSF,T03BLK /TEST FOR KYBD ON LINE 3
KSF T04KSF,T04BLK /TEST FOR KYBD ON LINE 4
KSF T05KSF,T05BLK /TEST FOR KYBD ON LINE 5
KSF T06KSF,T06BLK /TEST FOR KYBD ON LINE 6
KSF T07KSF,T07BLK /TEST FOR KYBD ON LINE 7
KSF T10KSF,T10BLK /TEST FOR KYBD ON LINE 10
KSF T11KSF,T11BLK /TEST FOR KYBD ON LINE 11
KSF T12KSF,T12BLK /TEST FOR KYBD ON LINE 12
KSF T13KSF,T13BLK /TEST FOR KYBD ON LINE 13
KSF T14KSF,T14BLK /TEST FOR KYBD ON LINE 14
KSF T15KSF,T15BLK /TEST FOR KYBD ON LINE 15
KSF T16KSF,T16BLK /TEST FOR KYBD ON LINE 16
KSF T17KSF,T17BLK /TEST FOR KYBD ON LINE 17
/NOW CHECK FOR TRANSMIT INTERRUPTS
ZZ=TTYN
DEFINE TSF Q QQ < XLIST
IFNZRO ZZ <
ZZ=ZZ-1
XLIST
Q /SKIP ON XMT FLAG
XLIST
IFNZRO ZZ < XLIST
JMP .+3
XLIST>/END OF IFNZRO ZZ
IFZERO ZZ < XLIST
JMP I [INTTY9
XLIST>/END OF IFZERO ZZ
XLIST
JMS I [INTYO1
QQ /ADR OF DEVICE BLOCK
XLIST >/END OF IFNZRO ZZ
XLIST >/END OF TSF DEFINITION
TSF T00TSF,T00BLK /CHECK LINE 0 FOR XMT INTERRUPT
TSF T01TSF,T01BLK /CHECK LINE 1 FOR XMT INTERRUPT
TSF T02TSF,T02BLK /CHECK LINE 2 FOR XMT INTERRUPT
TSF T03TSF,T03BLK /CHECK LINE 3 FOR XMT INTERRUPT
TSF T04TSF,T04BLK /CHECK LINE 4 FOR XMT INTERRUPT
TSF T05TSF,T05BLK /CHECK LINE 5 FOR XMT INTERRUPT
TSF T06TSF,T06BLK /CHECK LINE 6 FOR XMT INTERRUPT
TSF T07TSF,T07BLK /CHECK LINE 7 FOR XMT INTERRUPT
TSF T10TSF,T10BLK /CHECK LINE 10 FOR XMT INTERRUPT
TSF T11TSF,T11BLK /CHECK LINE 11 FOR XMT INTERRUPT
TSF T12TSF,T12BLK /CHECK LINE 12 FOR XMT INTERRUPT
TSF T13TSF,T13BLK /CHECK LINE 13 FOR XMT INTERRUPT
TSF T14TSF,T14BLK /CHECK LINE 14 FOR XMT INTERRUPT
TSF T15TSF,T15BLK /CHECK LINE 15 FOR XMT INTERRUPT
TSF T16TSF,T16BLK /CHECK LINE 16 FOR XMT INTERRUPT
TSF T17TSF,T17BLK /CHECK LINE 17 FOR XMT INTERRUPT
Z=.-INTTTY
Z=Z-200
IFNZRO Z <PAGE>
>/END OF IFZERO FTDC02F
XISTOG FTDC02F
>/END OF IFNZRO TTYN
LISTOG TTYN
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** RECINT-DDCMP ***
/ *** BASE LEVEL TTY INPUT HANDLING ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/HERE TO HANDLE TTY INPUT
/ CALLED FROM LOOP - WILL RETURN TO LOOP
/ TAKES NEXT CHAR FROM TTIQUE AND PUTS IT INTO AN INPUT CHUNK
/TEMP USAGE IS
/ TEMP8 IS POINTER TO LDBXPT
/ TEMP7 ADR OF DDCMP STATUS WORD
/ TEMP6 ADR OF DEVBF1
/ TEMP5 CHAR
/ TEMP4 ADR OF CHRTAB BITS
/DEVDDC BITS
/ 0001 /DEFERED ECHO MODE
/ 0002 /TRANSLATE LOWER CASE TO UPPER
/ 0004 /OUTPUT HAS BEEN FROZEN BY TYPEIN OF XOF
/ 0010 /IMAGE MODE INPUT
/ 0020 /IMAGE MODE OUTPUT
/ 0040 /TTY PAGE IN EFFECT
/ 0100 /TTY TAPE FEATURE(IMPLIES SUPPRESS NORMAL CR HANDLING)
/ 0200 /TTY HAS HDW TAB
/ 0400 /INPUT STOPPED BY SENDING XOFF TO TTY
/ 1000 /DATA TERMINAL READY
/ 6000 /0=NONE
/ /1 NG
/ /2 DATA SET READY
/ /3 CARRIER DETECT
RECINT, IOF /SO WE DON'T MISS A QUEUE OVERFLOW
TAD I TIQTKR /GET LINE #
DCA DDB
TAD I TIQTKR /GET CHAR
AND [0377 /8 BITS ONLY(THIS ISN'T NECESSARY)
DCA TEMP5 /SAVE CHAR
TAD TIQTKR
TAD (1-TTIQUE-TIQLEN
SZA CLA
JMP RECIN0 /DON'T NEED TO RESET POINTERS
TAD (TTIQUE-1
DCA TIQTKR
RECIN0, ION /MATCHES IOF AT RECINT
TAD TEMP5 /GET CHARACTER
AND [0177 /SEVEN BITS ONLY
TAD (CHRTAB /SCNSER CHAR TABLE ADR
DCA TEMP4 /SAVE ADR OF CHAR TYPE BITS
NLOAD DEVSTS
TAD DDB /MAKE STATUS ADR
DCA DDBSTS /SAVE FOR TTYGO
Q=DEVBF1-DEVSTS
NLOAD Q
TAD DDBSTS
DCA TEMP6 /SAVE POINTER TO DEVBF1
TAD (LDBXPT
TAD DDB
DCA TEMP8 /SAVE POINTER TO XOF LEVEL STRING
Q=DEVDDC-DEVSTS
NLOAD Q
TAD DDBSTS /DEVICE STATUS
DCA TEMP7 /SAVE ADR OF DEVDDC
TAD (0010 /MASK FOR IMAGE MODE INPUT
AND I TEMP7 /COMPARE AGAINST DDCMP STATUS
SZA CLA /SKIP IF NOT IN IMAGE MODE INPUT
JMP RECIN1 /IMAGE MODE INPUT
TAD TEMP5 /GET CHARACTER
SNA CLA /CHECK FOR NULL
JMP LOOP /FLUSH NULLS
NLOAD CHRLC /MASK FOR CHAR IS LOWER CASE
AND I TEMP4 /TEST AGAIN CHRTAB
SNA CLA
JMP RECIN1 /CHAR IS NOT LOWER CASE
NLOAD 2 /MASK FOR SHOULD TRANSLATE
AND I TEMP7 /COMPARE AGAINST DDCMP STATUS
SZA CLA
TAD (-240 /CONVERT TO UPPER CASE
TAD TEMP5 / AND COMPLEMENT PARITY BIT
AND (0377 /CLEAR EXTRANEOUS BITS, INCLUDING "LAST IN CHUNK" FLAG
DCA TEMP5 / AND SAVE CHAR AGAIN
RECIN1, NLOAD CONBIT /MASK FOR DEVICE CONNECTED
AND I DDBSTS
SNA CLA /IS IT CONNECTED ?
JMP CONTYP /NO SO TELL USER
TAD (-ERSCNT
TAD FRECNT
SPA CLA
JMP BELTYP /NO FREE CHUNKS
TAD I TEMP6 /GET CONTENTS OF DEVBF1
DCA TEMP3 /SAVE WHERE GETCHR CAN USE IT
JMS GETCHR
NL0 /COUNT IS ZERO
TAD (-30 /24 DECIMAL
SMA CLA /HAS USER TYPED FAR AHEAD ?
JMP BELTYP /YES SO DING HIM
RECIN2, JMS RECI42 /PUT STATUS INTO THE MESSAGE
NLOAD 1 /MASK FOR DEFERRED ECHO
AND I TEMP7 /COMPARE WITH DEVDDC
SZA CLA /SKIP IF NOT DEFERRED ECHO
JMP RECIN5 /ALREADY IN DEFERRED ECHO MODE
NLOAD DEVOAD /POINTER TO OUTPUT DATA
TAD DDB
DCA TEMP1
TAD I TEMP1
SZA CLA /IS THERE OUTPUT DATA WAITING ?
JMP RECIN4 /YES SO GO INTO DEFERRED ECHO MODE
Q=LDBFPT-LDBXPT
NLOAD Q
TAD TEMP8
IOF /WE WILL MODIFY INTERRUPT LOCATIONS
DCA TEMPA /SAVE POINTER TO LDBFPT
TAD TEMPA /GET LDBFPT
IAC
DCA TEMPB /SAVE POINTER TO LDBCHR
TAD I TEMPA /GET FILLER WAITING
TAD I TEMPB /ANY CHARS LEFT TO ECHO FROM BEFORE ?
SZA CLA
JMP RECIN4 /YES SO ENTER DEFERRED ECHO MODE
TAD I TEMP4 /GET CHRTAB BITS FOR THIS CHARACTER
SPA CLA /IS CHAR A BREAK CHAR ?
JMP RECIN4 /YES SO ENTER DEFERRED ECHO MODE
JMS RECIN6 /PUT CHAR INTO THE INPUT CHUNKS
TAD TEMP5 /GET CHAR TO ECHO
AND [0177 /SEVEN BITS ONLY
TAD (-15 /TEST FOR CARRIAGE RETURN
SNA CLA
JMP RECI36 /CHAR IS A CR
TAD TEMP5 /GET CHAR TO ECHO
DCA I TEMPB /AND PUT IT INTO LDBCHR
TSTART, JMS TTYGO /TRY TO START THE TTY
JMP LOOP /AND BACK TO THE BIG LOOP
/HERE TO LOCAL-ECHO A CR
RECI36, TAD (CRLMSG-1 /CR-LF STRING
DCA I TEMPA /SET LDBFPT
JMS RECI37 /SET DEFERRED ECHO MODE
JMP TSTART /ALL DONE
BELTYP, NL0
TAD (TTOBEL-1 /THIS IS JUST A BELL
CNTYP2,
DCA I TEMP8 /SET LDBXPT
JMP TSTART
PAGE
/HERE TO SET DEFERRED ECHO MODE
RECI37, 0
TAD DDB
IOF /IN CASE NEED TO CALL ISBDDC
DCA INTDDB
NLOAD 1 /DEFERRED ECHO MODE BIT
JMS ISBDDC /SET BIT IN DEVDDC
JMS RECI42 /PUT STATUS INTO THE MESSAGE
JMP I RECI37
/HERE TO SET DEFERRED ECHO MODE
RECIN4, JMS RECI37 /SET DEFERRED-ECHO MODE
/HERE IF TTY IS IN DEFERRED ECHO MODE
RECIN5, JMS RECIN6 /PUT CHAR INTO THE INPUT CHUNKS
TAD DDB
IOF /IN CASE NEED TO CALL ISBDDC
DCA INTDDB
TAD (CHRXOF /MASK FORXOF BIT
AND I TEMP4 /MASK AGAINST CHRTAB BITS
SNA CLA
JMP LOOP /NOT AN XOF
TAD I TEMP7 /GET DEVDDC
AND [0040 /MASK FOR TTY PAGE
SNA CLA
JMP LOOP /NOT IN TTY PAGE
NLOAD 4 /FLAG OUTPUT FROZEN
JMS ISBDDC /SET BIT IN DEVDDC AND TELL 10
JMS RECI42 /PUT STATUS INTO STRING MAYBE
JMP LOOP
/HERE TO PUT AN INPUT CHAR INTO THE CHUNKS
RECIN6, 0
TAD TEMP6 /GET ADR OF DEVBF1
IAC
DCA TEMP2 /SAVE POINTER TO DEVBF2
TAD I TEMP2 /GET DEVBF2(=POINTER TO DATA COUNT)
SZA CLA
JMP RECI62
NL1
JMS RECI70 /PUT COUNT INTO THE CHUNKS
TAD I TEMP3 /GET LDBIPT
DCA I TEMP2 /SET DEVBF2
NL1 /TYPE=1 FOR DATA
JMS RECI70 /PUT LINE NUMBER INTO THE CHUNKS
RECI62, TAD TEMP5 /GET THE CHARACTER WE JUST GOT
JMS RECI70 /PUT IT INTO THE CHUNKS
TAD I TEMP2 /GET DEVBF2
DCA TEMP2
ISZ I TEMP2 /COUNT IT
JMP I RECIN6
/HERE TO PUT STATUS INTO INPUT STRING FOR A LINE
RECI42, 0
NLOAD 1 /MASK FOR NEED TO SEND STATUS
AND I DDBSTS /CHECK AGAINST DEVSTS
SNA CLA
JMP I RECI42 /DON'T NEED TO
TAD TEMP6 /GET POINTER TO DEVBF1
IAC /MAKE INTO POINTER TO DEVBF2
DCA TEMP1
DCA I TEMP1
NLOAD 4 /CHAR COUNT FOR STATUS IS ALWAYS 4 CHARS
JMS RECI70
NL3 /STATUS IS TYPE 3
JMS RECI70 /PUT CODE INTO THE MESSAGE
JMS RECI70 /STC=0
TAD I TEMP7 /GET DEVDDC
AND [0177 /SEVEN BITS ONLY
TAD (0200 /ADD EXTENSIBLE BIT
JMS RECI70 /PUT 1ST HALF OF STATUS INTO STRING
TAD I TEMP7 /GET DEVDDC AGAIN
IFZERO PDP8I <
CLL RTR /NOT RTL
CLL RTR /THRU LINK
CLL RTR
>
IFZERO PDP8E <
BSW
>
CLL RAR
AND (0037 /STRIP EXTRA BITS
JMS RECI70 /PUT INTO THE STRING
NLOAD 7776 /MASK FOR NEED-TO-SEND-STATUS BIT
IOF
AND I DDBSTS
DCA I DDBSTS
JMP I RECI42
/HERE TO PUT A CHARACTER INTO THE CHUNKS
/ CALL JMS RECI70 WITH CHAR IN AC
/ RETURN
RECI70, 0
IOF
DCA INTMP4 /SAVE CHAR
TAD (LDBIPT
TAD DDB
DCA TEMP3 /SAVE POINTER TO LDBIPT
TAD I TEMP6 /GET DEVBF1
SZA CLA
JMP RECI72 /ALREADY HAVE AT LEAST ONE CHUNK
JMS ERSGET /GET A CHUNK
DCA I TEMP6 /SET DEVBF1
TAD I TEMP6 /GET DEVBF1 AGAIN
DCA I TEMP3 /SET LDBIPT
RECI72, TAD I TEMP3 /GET LDBIPT
IAC
AND [CNKSIZ-1
SZA CLA
JMP RECI75
TAD I TEMP3 /GET LDBIPT
AND [-CNKSIZ /MAKE ADR OF LINK WORD
DCA INTMP3 /SAVE ADR OF LINK WORD
JMS ERSGET /GET ANOTHER CHUNK
DCA I INTMP3 /SET LINK ADR IN PREVIOUS CHUNK
TAD I INTMP3 /GET CHUNK ADR AGAIN
DCA I TEMP3 /SET LDBIPT
RECI75, TAD I TEMP3 /GET ADR OF PREVIOUS CHAR
DCA INTMP3
NLOAD 3777 /MASK FOR LAST DATA BIT
AND I INTMP3 /STRIP PREVIOUS CHAR OF LAST BIT
DCA I INTMP3 /AND SAVE IT AGAIN WITHOUT BIT
ISZ INTMP3 /ADVANCE TO NEXT CHAR SLOT
NLOAD 4000 /MASK FOR LAST CHAR IN CHUNK
TAD INTMP4 /GET CHAR
DCA I INTMP3
ISZ I TEMP3 /ADVANCE LDBIPT
ION
JMP I RECI70 /RETURN TO CALLER
TDBCHK, 0 /CHECK TTY NUMBER IS VALID
TAD (-TTYN-1 /MAKE NEGATIVE IF OK
SMA /IS TTY INRANGE?
JMP BADTYP /REJECT CONNECTION
TAD (TTYN+1 /RESTORE TTY NUMBER
JMP I TDBCHK /RETURN
PAGE
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** DDCMP - XMTINT ***
/ *** INTERUPT LEVEL TTY HANDLING ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/HERE AT INTERRUPT LEVEL TO GET NEXT CHAR TO SEND TO A TTY
/ CALL LOAD INTDDB WITH ADR OF BLOCK
/ JMS XMTINT WILL FIND NEXT CHAR AND TYPE IT
/ RETURN WILL CLRACT IF ALL DONE
/ AC MAY CONTAIN GARBAGE ON RETURN
/
/ TEMPORARY STOARAGE IS:
/ INTMP7 /POINTER TO DEVTIM
/ INTMP6 /CHAR TO TYPE
/ INTMP5 /POINTER TO DEVSTS
XMTDIS, JMP I XMTINT
XMTINT, 0
/CLEAR IRMA BIT
NLOAD DEVSTS /RELATIVE ADR OF STATUS WORD
TAD INTDDB
DCA INTMP5 /SAVE POINTER TO DEVSTS
TAD (DEVTIM /RELATIVE ADR OF DEVICE TIME
TAD INTDDB /MAKE ABSOLUTE
DCA INTMP7 /SAVE POINTER TO DEVTIM
/CLEAR THE IRMA BIT
Q=-IRMBIT-1
NLOAD Q /MASK TO CLEAR IRMA BIT
AND I INTMP5
DCA I INTMP5
/SEE IF WE ARE SIMULATING A TAB
TAD (CHRBLA /POINT TO A WORD WHICH HAS HORIZONTAL MOTION BIT ON
DCA INTMP1 /STORE ADDRESS OF THIS WORD
NL4 /MASK FOR TAB SIMULATION BIT
AND I INTMP5 /LOOK AT STATUS
SZA CLA
JMP IXMT33 /YES, CONTINUE
/CHECK TO SEE IF WE ARE TIMING A FILLER
TAD I INTMP7 /GET DEVTIM
SZA CLA /ARE WE DOING A FILLER ?
JMP IXMT92 /YES SO JUST CLEAR THE INTERRUPT
/FIRST CHECK IF THERE IS ANY XON/XOF LEVEL OUTPUT
TAD (LDBXPT
TAD INTDDB
DCA INTMP4
TAD I INTMP4 /PICK UP POINTER
SZA
JMP IXMT15 /YES THERE IS XON/XOF OUTPUT
ISZ INTMP4 /NOW TRY FILL CLASS POINTER
TAD I INTMP4
SNA /IS THIS POINTER READY ?
JMP IXMT17 /KEEP LOOKING
/FOLLOWING IS USED BOTH FOR XON/XOF LEVEL, AND FOR FILL LEVEL OUTPUT
IXMT15, ISZ I INTMP4 /ADVANCE MEMORY COPY OF POINTER
IAC /ADVANCE AC COPY OF POINTER
DCA INTMP1
TAD I INTMP1 /GET NEXT CHAR
SMA /IS THIS LAST CHAR IN STRING ?
JMP IXMT30 /NO SO JUST TYPE IT
DCA INTMP6 /SAVE CHAR
DCA I INTMP4 /CLEAR POINTER
JMP IXMT32 /GO TYPE THE CHAR
IXMT17, ISZ INTMP4 /ADVANCE TO LDBCHR
TAD I INTMP4 /SEE IF THERE IS A CHAR IN SLOT
SNA /WAS THERE A CHAR ?
JMP IXMT20 /NO - TRY FOR OUTPUT
DCA INTMP6 /SAVE CHAR
DCA I INTMP4 /CLEAR LDBCHR
JMP IXMT31 /TYPE CHAR(WITH SPECIAL ECHO PROCESSING)
/CHECK TO SEE IF THERE ARE ANY OUTPUT CHARS
IXMT20, Q=DEVDDC-DEVSTS
NLOAD Q
TAD INTMP5 /MAKES ADR OF DEVDDC
DCA INTMP1
NLOAD 4 /MASK FOR OUTPUT FROZEN WITH XOF
AND I INTMP1 /COMPARE AGAINST DEVDDC
SNA CLA /WAS OUTPUT FROZEN ?
JMS IGTOCH /TRY TO GET ANOTHER CHAR FROM THE CHUNKS
JMP IXMT90 /NONE LEFT OR OUTPUT FROZEN
DCA INTMP6 /SAVE THE CHAR
JMP IXMT32
/HERE TO TYPE NEXT CHAR
IXMT30, DCA INTMP6 /SAVE CHAR
IXMT31,
IXMT32, TAD INTMP6 /GET CHARACTER AGAIN
AND [0177 /7 BITS ONLY
TAD (CHRTAB /MAKE POINTER INTO THE CHARACTER TABLE
DCA INTMP1 /ADDRESS OF CHARACTER TABLE ENTRY
TAD (CHRHT
AND I INTMP1 /GET HT BIT
SNA CLA
JMP IXMT50
/HERE TO CHECK IF TTY HAS HARDWARE TABS
NLOAD Q
TAD INTMP5
DCA INTMP2
TAD I INTMP2 /DEVDDC
AND (220 /HDW TAB BIT OR IMAGE OUTPUT
SZA CLA /SKIP IF NEITHER
JMP IXMT50 /EITHER OR BOTH, SO PRINT TAB
/START OF TAB SIMULATION
NL4
TAD I INTMP5
DCA I INTMP5
TAD (CHRBLA /POINT TO CHARACTER WITH HMO BIT ON
DCA INTMP1 /SAVE ADDRESS
JMP IXMT33
IXMT50,
NLOAD CHRFLL /MAKE MASK FOR CHAR NEEDS A FILLER
AND I INTMP1 /GET SPECIAL CHARACTER BITS
SNA CLA
JMP IXMT33 /DOESN'T NEED A FILLER
TAD INTMP6 /GET CHARACTER AGAIN(MUST BE IN RANGE 10-15)
AND [0007 /THREE BITS ONLY
TAD (LDBFIL
TAD INTDDB
DCA INTMP2
TAD I INTMP2 /GET TIME TO STALL ON THIS CHAR
SNA /IS THERE ANY FILLER FOR THIS ONE ?
JMP IXMT33 /NO
DCA I INTMP7 /AND SET DEVTIM
IXMT33, TAD (LDBCOL /RELATIVE ADR OF HORIZONTAL POSITION
TAD INTDDB /MAKE ABSOLUTE
DCA INTMP3 /SAVE LDBCOL ADDRESS
TAD I INTMP1 /GET CHRTAB BITS
AND (CHRHMO /MASK FOR HORIZONTAL MOTION
SZA CLA
ISZ I INTMP3 /INCREMENT HORIZONTAL POSITION
NL4 /TAB BIT MASK
AND I INTMP5 /SEE IF ON
SNA CLA /SKIP IF YES
JMP IXMT34 /JMP IF NOT
TAD I INTMP3 /GET POSITION
AND [7 /LOOK AT LOW ORDER BITS
SZA CLA /SKIP IF AT TAB STOP
JMP IXMT61
TAD I INTMP5 /GET STATUS
AND (7773
DCA I INTMP5
IXMT61, TAD (40 /GET BLANK
DCA INTMP6 /STORE AS CHARACTER
JMP IXMT38 /TYPE IT
PAGE
IXMT34,
TAD I INTMP1 /GET CHRTAB BITS
AND (CHRCR /MASK FOR CARRIAGE RETURN
SZA CLA /IS CHAR A CR ?
DCA I INTMP3 /YES SO RESET TO COLUMN 0
IXMT38, IFNZRO TTYN <
TAD INTDDB
TAD (-CTYBLK
SZA CLA /IS THIS CHAR FOR THE CTY
JMP INTYPE /NO SO BRANCH TO DC02F OR KL8E ROUTINE
>/END OF IFNZRO TTYN
TAD INTMP6 /RETREIVE CHAR
IXMT60, CTYTLS /ECHO IT
JMP XMTDIS
/HERE WHEN NOTHING FOR A TTY TO DO
IXMT90, NL3777 /MASK TO STRIP ACTIVE BIT
AND I INTMP5 /CLEAR ACTIVE BIT
DCA I INTMP5
IXMT92, IFNZRO TTYN <
TAD INTDDB
TAD (-CTYBLK
SZA CLA
JMP TTOFIN /CLEAR TTY
>/END OF IFZERO TTYN
CTYTCF /CLEAR TELEPRINTER FLAG
JMP XMTDIS /DISMISS CALL TO XMTINT
IFZERO LPTN < PAGE >/BECAUSE XMTINT USES FIRST FEW LOCATIONS ON PAGE
DEFINE INSRT2 <
FEAPNT, 0 /SUBROUTINE TO POINT TO FEATURES
TAD (TTYFEA /GET TTY FEATURES
DCA TEMP2
TAD I DDBSTS /GET DDB STATUS
AND (TTYBIT
SZA CLA
JMP .+4
TAD [DDBSIZ
TAD DDB
DCA TEMP2
JMP I FEAPNT
DATDEC, 0
/ NLOAD DEVDRQ /POINT TO DATA REQUESTS
XXXX=DEVDRQ-4
IFNZRO XXXX <NLOAD DEVDRQ>
NL4
TAD DDB
DCA TEMP1
NLM1 /LOAD -1
TAD I TEMP1 /ADD DATA REQUEST
DCA I TEMP1 /STORE NEW ONE
JMP I DATDEC
INUSE, TAD TEMPA /GET DISPATCH ADDRESS
TAD (DEVN^2
DCA TEMP2 /MMLTAB ENTRY
NL1 /REASON (NOT AVAIL)
DCA I TEMP2 /SAVE IN MMLTAB
DCA I TEMPA /CLEAR DISPATCH ADDRESS TO
/INDICATE WE MUST SEND DISCONNECT
JMP RCVFLU
DISCHK, 0 /CHECK IF A DEVICE CONNECTED DISCONNECT MUST BE SENT
TAD (-DEVN /LOOP CONTROL
DCA TEMPD / INITIALIZATION
TAD (RCVDSP+1 /FIRST ENTRY
DCA TEMPC
DISCLP, TAD I TEMPC /GET ENTRY
SNA CLA /SKIP UNLESS DISCONNECT REQUIRED
JMP DISSND /SEND DISCONNECT
ISZ TEMPC /ADVANCE POINTER
ISZ TEMPD /UP COUNTER AND SKIP IF DONE
JMP DISCLP /CONTINUE
JMP I DISCHK /RETURN TO CALLER
IFNZRO DP8ETR <
ITRCRC, 0 /TRACE INPUT CHARACTERS
DCA TEMP1 /STORE CHARACTER
NL4000 /BIT TO INDICATE INPUT
TAD TEMP1 /+CHARACTER=TRACE ENTRY
JMS ITRCW /STORE IN TRACE BUFFER
TAD TEMP1 /GET CHARACTER
JMS CRCALC /ACCUMULATE CRC
JMP I ITRCRC /RETURN
ITRCR2, 0 /STORE CRC IN TRACE
TAD AUTO1 /ADDRESS BEFORE CRC
DCA TEMP5 /AT END TEMP5 WILL POINT AT CHUNK POINTER
ISZ TEMP5 /ADVANCE TO NEXT CRC CHARACTER
NL4000 /MASK FOR INPUT
TAD I TEMP5 /GET TRACE ENTRY
JMS ITRCW /STORE IN TRACE BUFFER
ISZ TEMP5 /ADVANCE TO NEXT CRC CHARACTER
NL4000 /MASK FOR INPUT
TAD I TEMP5 /GET TRACE ENTRY
JMS ITRCW /STORE IN TRACE BUFFER
ISZ TEMP5 /SKIP OVER CHUNK COUNT
ISZ TEMP5 /POINT TO CHUNKS
JMP I ITRCR2 /RETURN
ITRCR3, 0 /TRACE CRC OF DATA PART
JMS GETCHR /GET NEXT CRC CHARACTER
JMP NRMNAK /NO ROOM
DCA TEMPA /SAVE CHARACTER
NL4000 /INPUT MASK BIT
TAD TEMPA /+CHARACTER
JMS ITRCW /STORE IN TRACE BUFFER
TAD TEMPA /GET BACK CHARACTER
JMP I ITRCR3 /RETURN
ITRCW, 0 /TURN OFF INTERRUPTS AND TRACE
IOF
JMS TRACEW
ION
JMP I ITRCW
>/END OF IFNZRO DP8ETR
>/END OF DEFINE INSRT2
IFZERO LPTN <INSRT2
IFNZRO TTYN <
IFNZRO FTDC02F <
DISCDE
DISCD1
DISCD2
>/END OF IFNZRO FTDC02F
>/END OF IFNZRO TTYN
>/END OF IFZERO LPTN
LISTOG LPTN
IFNZRO LPTN <
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** LPT SERVICE ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/DDCMP COMPRESSES LINE PRINTER DATA AS FOLLOWS
/ 1CCCCCCC CCCCCCC IS CHARACTER
/ 01XXXXXX XXXXXX IS NUMBER OF BLANKS
/ 001XXXXX XXXXX IS REPETITION FOR FOLLOWING CHAR
/DEVDDC BITS
/ 0001 FATAL ERROR
/ 0002 OFF LINE
/ 0004 OUT OF PAPER
/ 0010 PAPER JAM
/ 0020 OFF LINE BECAUSE OF OPERATOR
/ 0040 SLEW ERROR
/ 0100 HAMMER FIRING ERROR
/ 0200 LOW ON PAPER
/ 0400 STACKER FULL
/ 1000 OUT OF INK
/ 2000 PRINT QUALITY BAD
LPTVTB, DCA INTMP1 /SAVE MASK FOR VFU SEARCH
TAD [0012 /LINE FEED
DCA LPTCHR
TAD LPTLNE /LINE # WE ARE ON
DCA INTMP3 /SAVE POINTER TO VFU TAPE
LPTVT3, ISZ LPTLNE
TAD I LPTLNE /GET CURRENT LINE STOPS
SPA
JMP LPTVT4 /END OF TAPE SO DO A FF
AND INTMP1 /USE MASK ON IT
SNA CLA /IS THIS HOLE PUNCHED ON TAPE ?
JMP LPTVT3
TAD LPTLNE /GET POINTER TO VFU TABLE
CMA /MAKE -LPTLNE-1
TAD INTMP3 /MAKES # OF LINES TO SKIP
JMP LPTX15 /ZERO LPTCOL THEN GO PRINT CHAR
LPTVT4, TAD LPTLNE
NEGATE
TAD INTMP3 /LEAVES NUMBER OF LINES TO SKIP-1
SZA CLA /WERE WE ON LAST LINE ?
JMP LPT014 /NO SO DO A FORM FEED
JMP LPTX14 /YES SO DO A LINE FEED
LPTHN2, TAD [0040
ISZ LPTZCT
JMP INTLP4 /PRINT SPACE
NL6000
TAD LPTOPV
CDFINS
DCA LPTPIV
CDFCNK
JMP INTLP0+1
INTLPT, LPTSKF /SKIP ON LPT FLAG
JMP INTLP8 /NOT LPT SO KEEP LOOKING
JMS INTLP0
JMP INTDIS
INTLP8, TAD I (LPTBLK+DEVSTS /GET LPT STATUS
SPA CLA /SKIP IF NOT ACTIVE
LPXXSE, LPTSKE /SKIP ON LPT ERROR ########
/ INSTRUCTION CHANGED BY SYSCHK FOR LS8E
JMP INTLP9 /NOT LPT ERROR OR NOT ACTIVE
TAD (LPTBLK /POINT TO DDB
DCA INTDDB /SAVE FOR ISBDDC
NL2 /OFF-LINE
JMS ISBDDC /SET BIT, AND SEND STATUS
NL3777 /CLEAR ACTIVE
AND I (LPTBLK+DEVSTS
DCA I (LPTBLK+DEVSTS
LPTCIE /CLEAR INTERRUPT ENABLE
JMP INTDIS
/HERE ONCE PER CLOCK TICK TO SEE IF LPT NEEDS SERVICE
CLKLPT, IOF /DISABLE INTERRUPTS WHILE CHECK LPT
TAD I (LPTBLK+DEVSTS /GET ACTIVE/INACTIVE STATUS
SMA CLA /IS LPT ACTIVE ?
JMP STRLPT /NO TRY TO START IT
ISZ I (LPTBLK+DEVTIM /YES HAVE WE TIMED OUT ?
JMP CLKLP8 /HASN'T TIMED OUT
/HERE WHEN LPT TIMES OUT
TAD (LPTBLK
DCA INTDDB /SAVE ADR OF LPT DEVICE BLOCK
NL2 /OFF-LINE FLAG
JMS ISBDDC /SET FLAG AND TELL 10
NL2000
CDFINS
TAD LPTPIV
SMA /IS PIVOT ALREADY A JMP(I.E. OPCODE 5) ?
DCA LPTOPV /NO SO SAVE PIVOT
NL0
TAD LPTCOL
CMA
DCA LPTZCT
TAD (JMP I LPTHNG
DCA LPTPIV
CDFCNK
IFNZRO FTTRBL <
TAD (LPTMSG-1
DCA ERRFLG /LEAVE MSG FOR OPERATOR
>/END OF IFNZRO FTTRBL
TAD [0015 /CARRIAGE RETURN
LPTSTB /PRINT IT
JMP CLKLP8
/HERE TO TRY TO START LPT WHEN NOT ACTIVE
STRLPT,
TAD I (LPTBLK+DEVOAD /GET OUTPUT CHAR ADR
LPXYSE, LPTSKE /DON'T TRY IF LPT IS IN TROUBLE ########
/ INSTRUCTION CHANGED BY SYSCHK FOR LS8E
SNA CLA /ANY OUTPUT FOR LPT ?
JMP CLKLP8 /NO
NL1 /NEED FOR LS8E
LPTSIE /SET INTERRUPT ENABLE
NLOAD 4000 /FLAG DEVICE IS ACTIVE
TAD I (LPTBLK+DEVSTS
DCA I (LPTBLK+DEVSTS
JMS INTLP0 /BEGIN PRINTING
CLKLP8, ION
NL0 /BECAUSE THERE MAY BE GARBAGE IN AC
JMP CLKLP9
PAGE
LPTBBB, JMS IGTEXN /GET THE EXTENSIBLE NUMBER = COUNT
JMP LPTFIN /NONE SO DONE
IFNZRO FTDEBUG <
/ SNA
/ HLT
>/END OF IFNZRO FTDEBUG
TAD [-1
DCA LPTCNT
JMS IGTOCH
JMP LPTFIN
LPTGGG, NLM1 /PREPARE TO DECREMENT COUNT
TAD LPTCNT
SPA /ARE THERE CHARS LEFT ?
JMP LPTBBB /NO SO GET A COUNT
DCA LPTCNT /YES RESTORE COUNT
JMS IGTOCH /GET THE NEXT CHAR
JMP LPTFIN
DCA LPTCCH /SAVE CHAR AND FLAG BITS
TAD LPTCCH
AND [0200 /IS THIS A COMPRESSED CHAR ?
SZA CLA /IS THIS A NICE CHAR
JMP LPTFFF
LPTXXX, TAD LPTCCH /GET FLAG BITS AGAIN
AND (0100 /WAS THIS COMPRESSED BLANKS ?
SZA CLA
JMP LPTZZZ /YES
NLM1
TAD LPTCCH /GET COUNT
AND (0037
DCA LPTCCN
JMP LPTGGG /GO GET CHAR TO REPEAT
LPTZZZ, TAD LPTCCH
AND (0077 /LEAVE ONLY COUNT
DCA LPTCCN /SAVE COUNT
TAD [0040 /BLANK
LPTVVV, DCA LPTCCH
JMP INTLP0+1
INSRT2
IFNZRO TTYN <
IFNZRO FTDC02F <
DISCDE
DISCD1
DISCD2
>/END OF IFNZRO FTDC02F
>/END OF IFNZRO TTYN
PAGE
/HERE WHEN USER SENT LINE LONGER THAN PRINTER LINE
LPTWRP, TAD LPTCHR
DCA LPTOCH
TAD [0012 /PUT OUT A LINE FEED
JMP INTLP1
/HERE WHEN OUTPUT DATA FOR LPT IS EXHAUSTED
LPTFIN, LPTCLF /CLEAR ANY FLAGS
JMS CLRACT
JMS ISTDDC /UPDATE DDCMP STATUS
LPXXCE, LPTCIE /CLEAR INTERRUPT ENABLE ########
/ INSTRUCTION CHANGED BY SYSCHK FOR LS8E
JMP I INTLP0 /RETURN TO CALLER
/HERE AT INTERRUPT LEVEL WHEN LPT INTERRUPTS
INTLP0, 0
NL0 /IN CASE CAME FROM SPECIAL CHAR CODE
TAD (LPTBLK
DCA INTDDB
LPTPIV, 7402 /LPT PIVOT(SET TO NOP, SKP OR JMP)
JMP INTLP6 /DO TAB FUNCTION
NLM1 /GET SET TO DECREMENT
TAD LPTCCN /DECREMENT COMPRESSED CHAR COUNT
SPA /ARE WE DECOMPRESSING ?
JMP LPTGGG /NO SO GET A CHAR FROM CHUNKS
LPTYYY, DCA LPTCCN /SAVE COMPRESSED CHAR COUNT
LPTFFF,
TAD LPTCCH /GET CHAR AGAIN
AND [0177 /SEVEN BITS ONLY
INTLP1, DCA LPTCHR /SAVE CHAR
INTLPA,
TAD LPTCHR
TAD (CHRTAB
DCA INTMP1
TAD I INTMP1
RTR
SZL SPA /SKIP IF NORMAL CHAR
JMP INTLP5 /SPECIAL MOTION OR FLUSH
IFNZRO FTLPLC < NL0 >
IFZERO FTLPLC < /SPECIAL HANDLING FOR LPT'S WITHOUT LOWER CASE
RAR /SHIFT BIT FOR LC INTO POSITION
SNL CLA /IS CHAR LOWER CASE ?
JMP INTLP2 /NOT LOWER CASE
TAD LPTCHR /GET CHAR AGAIN
TAD (-40 /CONVERT TO UPPER CASE
DCA LPTCHR /AND SAVE CHAR
>/END OF IFZERO FTLPLC
INTLP2,
ISZ LPTCOL /THIS ADVANCES PRINTER ONE COLUMN
TAD LPTCOL
TAD (-LPTWID
SMA SZA CLA
JMP LPTWRP /NEED TO DO WRAP AROUND
INTLP3, NL0
TAD LPTCHR /GET CHAR AGAIN
INTLP4,
LPTSTB
TAD (-14
SNA CLA /WAS THIS A FORM FEED ?
TAD LPTTFF /YES
TAD LPTTCH /TIME FOR NORMAL CHAR
DCA I (LPTBLK+DEVTIM
JMP I INTLP0
LPTTFF, -100 /TIME FOR A FORM FEED ########
LPTTCH, -32 /TIME FOR A NORMAL CHARACTER ########
/HERE WHEN CHAR MAY BE SPECIAL MOTION
INTLP5, /CHECK IF CHAR TO BE FLUSHED
SNL CLA /IS CHAR GARBAGE ?
JMP LPTFLS /FLUSH CHAR & RETURN TO CALLER
TAD LPTCHR /GET CHAR AGAIN
TAD (LPTTBL-11
DCA INTMP1
TAD I INTMP1
SNA /IS THIS A TAB ?
JMP LPT011 /YES
SMA /IS THIS A FF OR A CR ?
JMP LPTVTB /NO
IAC
SNA /IS CHAR A CARRIAGE RETURN ?
JMP LPT015 /YES
/HERE TO PRINT A FF ON LPT
LPT014, NL0
TAD [0014
DCA LPTCHR
LPTX14, TAD (LPTVFU-1
DCA LPTLNE /WE ARE AT LINE 0 AGAIN
NLM2 /SAYS PRINT ONCE
LPTX15, DCA LPTRCT /SET REPETITION COUNT
TAD (NOP
DCA LPTPIV
LPT015, DCA LPTCOL /SET COLUMN 0 AGAIN
TAD [0015 /CARRIAGE RETURN
JMP INTLP4
/HERE TO SIMULATE A HORIZONTAL TAB ON LPT
LPT011, TAD LPTCOL /GET CURRENT COLUMN
AND (0007
TAD (-10
DCA LPTRCT /REPETITION COUNT
TAD (10
TAD LPTCOL
AND (7770
DCA LPTCOL
TAD [0040 /SPACE
DCA LPTCHR
TAD (NOP
DCA LPTPIV
JMP INTLP3 /GO PRINT FIRST COPY
INTLP6, ISZ LPTRCT /INCREMENT COUNT
JMP INTLP3 /PRINT CHAR
TAD (SKP
DCA LPTPIV
TAD LPTOCH
SNA
JMP INTLP0+1
DCA LPTCHR
DCA LPTOCH
JMP INTLPA
/HERE ON HUNG LPT
LPTHN1, ISZ LPTPIV
JMP LPT015
LPTFLS, /HERE TO FLUSH CHARACTER
IFNZRO CDRN <
TAD I (CDRBLK+DEVSTS /SEE IF CDR ACTIVE
SMA CLA /SKIP IF ACTIVE
>/END OF IFNZRO CDRN
JMP INTLP0+1 /DO NEXT CHARACTER
IFNZRO CDRN <
JMP LPTFIN /TURN OFF LPT ACTIVE; TICKS
/WILL START IT UP AGAIN
>/END OF IFNZRO CDRN
PAGE
>/END OF IFNZRO LPTN
LISTOG LPTN
DEFINE INSRT1 <
BADTYP, NL1 /REASON CODE =1
JMP DISCON
TOOMNY, JMS GETEXN /GET SLA
DCA TEMP2 /SAVE IT
NL2 /REASON
DISCON, DCA TEMPA /SAVE REASON
TAD DISREA /GET CURRENT REASON
SZA CLA /CHECK IF WE'VE GOT DISCONNECT WAITING
/ HLT /TOO MANY TOO FAST
JMS I [DMPTRP
TAD TEMP2 /PICK UP SLA
DCA DISSLA /SAVE IT
TAD RSNA
DCA DISSNA
TAD TEMPA /GET REASON
DCA DISREA /STORE AND INDICATE THAT WE NEED TO SEND DISCONNECT
JMP RCVFLU /GET RID OF MESSAGE
CONTYP, NL0
TAD (NCOMSG-1
JMP CNTYP2
>/END OF DEFINE INSRT1
IFZERO CDRN <INSRT1>
IFZERO LPTN <PAGE>
LISTOG CDRN
IFNZRO CDRN <
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** CDR SERVICE ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/DATA SENT TO DECSYSTEM-10 IS ESSENTIALY IMAGE MODE
/ IF BIT 100 IS ZERO THEN DATA IS LOW ORDER 6BITS OF TWO CHARS
/ IF BIT 100 IS SET THEN DATA IS COMPRESSED:
/ BITS 060 SPECIFIY ZONE PUNCH:
/ 0 IS NO ZONE PUNCH
/ 1 IS 12 PUNCH
/ 2 IS 11 PUNCH
/ 3 IS 0 PUNCH
/ BITS 17 SPECIFY COLUMN PUNCH:
/ 0 IS NO PUNCH
/ 1 IS 1 PUNCH
/ 2 IS 2 PUNCH
/ ETC.
/ TRAILING BLANKS ARE NOT TRANSMITTED.
/ REPRESENTATION MEANING
/ 1CCCCCCC CCCCCCC = SEVEN BIT ENCODED CHARACTER
/ 01XXXXXX XXXXXX =COUNT OF BLANKS
/ 001XXXXX XXXXX = COUNT OF REPETITIONS, 0-31
/ 0000CCCC
/ CCCCCCCC CCCCCCCCCCCC = TWELVE BIT ENCODED CHARACTER
/
/ DEVDDC - DDCMP STATUS WORD
/ 0001 CARD READER ERROR(MASTER ERROR)
/ 0002 HOPPER EMPTY
/ 0004 REGISTRATION ERROR
/ 0010 INVALID PUNCH
/ 0020 STACKER FULL
/ 0040 JAM WHILE FEEDING
/ 0100 PICK FAILURE
/ 0200 END OF FILE CARD
/ 0400 HDW EOF
/ 1000 CDR OVERRAN THE PROCESSOR
/ 2000 CDR HAS GONE OFF LINE
/ 4000 CDR STOPPED(MAY BE CLEARED WITH A SET MODE)
/
/ DEVICE BLOCK
/ DEVOLC IS USED TO COUNT COLUMNS OF CARD
/ DEVOAD IS ADR OF LAST NONBLANK CHAR
/ DEVSTS USES EOFBIT
/CDRCNK IS WORST CASE NUMBER OF CHUNKS/CARD
Z=CNKSIZ-4; IFZERO Z <CDRCNK=66>
Z=CNKSIZ-10; IFZERO Z <CDRCNK=27>
Z=CNKSIZ-20; IFZERO Z <CDRCNK=13>
Z=CNKSIZ-40; IFZERO Z <CDRCNK=6>
Z=CNKSIZ-100; IFZERO Z <CDRCNK=3>
Z=CNKSIZ-200; IFZERO Z <CDRCNK=2>
/HERE FOR A DATA READY INTERRUPT FROM CARD READER
ICDRD0, CDRCRB /READ CARD COLUMN
DCA INTMP5 /SAVE IT
TAD I (CDRBLK+DEVSTS /GET STATUS WORD FOR THE CDR
SMA CLA /IS CARD READER ACTIVE ?
JMP INTDIS /NO - PROBABLY LOCAL MODE
TAD I (CDRBLK+DEVOLC /GET COUNT OF COLUMNS READ SO FAR
TAD (-120 /COMPARE COLUMN TO 80
SMA CLA /WAS IT GT 80 ?
JMP ICDRD5 /ONLY READ 80 COLUMNS !!
TAD I (CDRBLK+DEVOLC /GET CARD COLUMN COUNTER
SZA CLA /IS THIS THE FIRST COLUMN ?
JMP ICDC14
TAD INTMP5 /GET CHARACTER AGAIN
DCA I (CDRBLK+DEVOAD /SAVE COLUMN ONE
JMP ICDC19
ICDC14, TAD INTMP5 /GET THE CHARACTER AGAIN
NEGATE
TAD CDCCHR /GET LAST CHAR READ
SZA CLA /IS THIS A REPETITION
JMP ICDC18 /NO SO PUT PREVIOUS CHAR INTO CHUNKS
TAD CDCCNT /GET COUNT OF REPETITIONS
TAD (-37
SMA CLA /HAVE WE DONE AS MANY AS POSSIBLE
ICDC18, JMS ICDC30 /PUT PREVIOUS CHARS INTO CHUNKS
ICDC19, TAD INTMP5 /GET THIS COLUMN AGAIN
DCA CDCCHR /SAVE IT
ICDC20, ISZ CDCCNT /COUNT REPETITION
ICDRD5, ISZ I (CDRBLK+DEVOLC
TAD I (CDRBLK+DEVOLC
TAD (-120 /CHECK FOR THIS IS THE LAST COLUMN
SNA CLA
JMS ICDC30
JMP INTDIS
ICDC30, 0
NLM1
TAD CDCCNT /GET COUNT FOR COMPRESSION
SNA /DID WE HAVE ANY REPETITIONS ?
JMP ICDC35 /NO JUST SEND THE CHAR
TAD (0041 /FLAG THIS IS A REPETION COUNT
JMS ICDRD6 /PUT COUNT INTO CHUNKS
ICDC35, NL6000
IAC CML RAR /SET LINK & LOAD 7000
AND CDCCHR /GET ROWS 12,11, & 0
RTR
RTR
RAR /POSITION BITS
DCA INTMP3 /AND SAVE FOR LATER USE
TAD CDCCHR /GET THE CHAR AGAIN
AND (0017 /GET ROWS 6,7,8,9
TAD (CD2TAB
DCA INTMP2
TAD CDCCHR /GET COLUMN AGAIN
AND (0760 /LEAVE ONLY ROWS 1/2/3/4/5
RTR
RTR
TAD (CD1TAB
DCA INTMP1
TAD I INTMP1
TAD I INTMP2
TAD INTMP3 /ADD ROWS 12/11/0
SMA SNL /CAN THE CHAR BE COMPRESSED ?
JMP ICDC39 /PUT CHAR INTO CHUNKS
NL6000 /BEGIN TO ASSEMBLE MASK
CLL CML IAC RTR /LEAVES 7400 IN AC
AND CDCCHR /GET THE CHARACTER AGAIN
RTL
RTL
RAL
JMS ICDRD6 /PUT HALF OF CHAR INTO THE CHUNKS
NL3777 /MASK TO STRIP SIGN BIT
AND CDCCHR
ICDC39, JMS ICDRD6 /PUT REST OF COLUMN INTO CHUNKS
DCA CDCCNT /INITIALIZE THE COUNT
JMP I ICDC30
/HERE TO PUT A CHAR INTO THE CHUNK BUFFER
ICDRD6, 0
DCA INTMP2 /SAVE CHAR
NL1
TAD CDRADR
AND [CNKSIZ-1
SZA CLA /HAVE WE HIT A CHUNK BOUNDRY ?
JMP ICDRD7 /NO
NL4000
TAD I CDRADR
DCA I CDRADR /FLAG LAST CHAR IN CHUNK
TAD CDRADR
AND [-CNKSIZ
DCA CDRADR /MAKE POINTER TO LINK WORD
JMS ERSGET /GET ANOTHER CHUNK FROM ERS
DCA I CDRADR
TAD INTMP1
DCA CDRADR /LINK CHUNK INTO STRING
ICDRD7, ISZ CDRADR /ADVANCE BUFFER POINTER
TAD INTMP2 /GET CHAR AGAIN
DCA I CDRADR /SAVE CHAR IN BUFFER
ISZ I CDREXT /COUNT CHAR INTO CHUNKS
JMP I ICDRD6 /RETURN TO CALLER
/HERE TO CHECK FOR LOW PRIORITY CARD READER INTERRUPTS
INTCDR, CDRSD /SKIP ON CARD DONE FLAG
JMP INTCD9 /NO TRY NEXT DEVICE
CDRCRD /CLEAR DONE FLAG
TAD I (CDRBLK+DEVSTS
SMA CLA /IS READER SUPPOSED TO BE ACTIVE ?
JMP INTDIS /NO SO JUST DISMISS
TAD I (CDRBLK+DEVOLC /GET COUNT OF COLUMNS ON CARD
TAD (-120 /SHOULD BE 80 DECIMAL
SZA CLA /IS IT ?
JMP INTCD2 /NO
NL4000 /FLAG FOR LAST CHAR IN CHUNK
TAD I CDRADR /GET LAST CHAR IN CARD
DCA I CDRADR /SAVE IT WITH FLAG
TAD (0200
AND I CDREXT /GET COUNT FOR BUFFER
JMP INTCD4
PAGE
INTCD4, SNA CLA
JMP INTCD1
ISZ CDREXT
NL1
SKP
INTCD1, TAD (0200
TAD I CDREXT
DCA I CDREXT
TAD I (CDRBLK+DEVOAD /GET COLUMN 1
TAD (-7417 /COMPARE WITH EOF
SZA CLA
JMP INTCD0 /WASN'T EOF SO CONTINUE
TAD (CDRBLK /ADR OF DEVICE BLOCK
DCA INTDDB
TAD (4200 /FLAG CDR HAS STOPPED AND READ EOF
JMS ISBDDC /TELL 10 WE SAW IT AND STOPPED
INTCD0,
JMP INTCD3
INTCD3, JMS INTCD5 /TRY SEND CARD TO 10
JMS STCARD /TRY TO KEEP CDR MOVING
JMP INTDIS /DISMISS INTERRUPT
INTCD2, TAD (RCKMSG-1
DCA ERRFLG /COMPLAIN ABOUT CARD
JMP INTDIS / DEVICE WILL TIME OUT AND USER WILL GET MESSAGE FROM 10
/HERE TO TRY TO SEND CARD TO 10
INTCD5, 0
TAD I (CDRBLK+DEVBF2
SZA CLA
JMP I INTCD5
TAD CDRNXT
DCA I (CDRBLK+DEVBF2
DCA CDRNXT
NLM1 /DECREMENT DATA REQUESTS
TAD I (CDRBLK+DEVDRQ
DCA I (CDRBLK+DEVDRQ
JMP I INTCD5
/HERE ONCE PER CLOCK TICK TO CHECK THE CARDREADER
/ IF ACTIVE SEE IF IT HAS TIMED OUT(PICK FAIL ?)
/ IF NOT ACTIVE TRY TO START IT
CLKCDR, IOF /LEAVE INTERRUPTS OFF FOR A WHILE
TAD (CDRBLK /IN CASE WE CALL ISTDDC, ETC.
DCA INTDDB
TAD I (CDRBLK+DEVBF1 /GET ADR OF 1ST CARD
SZA CLA
JMP CLKCD2
TAD I (CDRBLK+DEVBF2
DCA I (CDRBLK+DEVBF1
DCA I (CDRBLK+DEVBF2
CLKCD2, TAD I (CDRBLK+DEVSTS /GET DEVICE STATUS
SPA CLA /TEST FOR ACTIVE
JMP CLKCD5 /IS ACTIVE
NL1
AND I (CDRBLK+DEVDDC
SZA CLA /IS TROUBLE BIT UP ?
JMP CLKCD4 /YES SO CHECK IT
TAD I (CDRBLK+DEVDRQ
SNA CLA /DO WE HAVE ANY DATA REQUESTS ?
JMP CLKCD8 /NONE SO DONE
TAD CDRNXT
SZA CLA
JMS INTCD5 /IF HOLDING DUMP
NL4000 /ACTIVE FLAG
TAD I (CDRBLK+DEVSTS
DCA I (CDRBLK+DEVSTS /FLAG ACTIVE
JMS STCARD /TRY TO MOVE A CARD
CLKCD8, ION
NL0
JMP CLKCD9 /DONE FOR THIS TICK
CLKCD4, ISZ I (CDRBLK+DEVTIM /SEE IF WE HAVE WAITED A WHILE
JMP CLKCD8 /NO LONG ENOUGH YET
NL4000 /JUST STOP BIT
JMS ISTDDC /SET NEW DEVICE STATUS
JMP CLKCD8
/HERE AT ONCE PER TICK IF CDR IS ACTIVE
CLKCD5, ISZ I (CDRBLK+DEVTIM /INCREMENT TIMER
JMP CLKCD8 /HASN'T TIMED OUT SO WE ARE DONE
/CDR HAS TIMED OUT = PICK FAILURE
JMS CLRACT /CLEAR DEVICE ACTIVE
TAD (4101 /CDR STOPPED & PICK CHECK
JMS ISBDDC /SET DDCMP STATUS
NL6000 /THIS IS ABOUT 17 SECONDS(60HZ)
DCA I (CDRBLK+DEVTIM /SET TIMER
TAD CDRNXT /GET ADR OF CARD WE WERE TRYING TO READ
JMS FRECKS /FREE CHUNKS
DCA CDRNXT /FREE CURRENT BUFFER(& ION)
JMP CLKCD9 /ON TO NEXT DEVICE
INSRT1
PAGE
/HERE TO START CARD MOVING
STCARD, 0
NLOAD STSBIT /MASK FOR HAVE TO SEND STS
AND I (CDRBLK+DEVSTS /GET CURRENT STATUS BITS
SZA CLA /CHECK FOR EOF OR NEED TO SEND STATUS
JMP STCDR8 /STSBIT MUST BE CLEARED BEFORE READING
TAD I (CDRBLK+DEVDDC /GET DDCMP STATUS
SPA CLA /TEST FOR CDR STOPPED BIT
JMP STCDR8 /HAS STOPPED
TAD I (CDRBLK+DEVDRQ /GET DATA REQUESTS
SNA CLA
JMP STCDR8 /NO DATA REQUESTS SO DON'T MOVE CARDS
TAD I (CDRBLK+DEVBF2
SNA CLA /CHECK TO SEE IF HOLDING
JMS IGTCNK /GET FIRST CHUNK TO STORE CARD IN
JMP STCDR8 /HOLDING OR OUT OF CORE
DCA CDRNXT
TAD CDRNXT /GET ADR OF LINK WORD
IAC /MAKES ADR OF COUNT FIELD
DCA CDREXT /SAVE ADR OF COUNT FIELD(LOW ORDER)
DCA I CDREXT /CLEAR COUNT(LOW ORDER)
TAD CDREXT
IAC /MAKES ADR OF COUNT FIELD(HIGH ORDER)
DCA CDRADR /SAVE ADR
DCA I CDRADR /CLEAR HIGH ORDER COUNT
TAD (2 /DATA WITH EOR
JMS ICDRD6 /PUT CODE INTO CHUNKS
DCA CDCCNT /HAVE READ NO CHARS YET
TAD I (CDRBLK+DEVDDC /GET DEVICE STATUS BITS
AND (7177 /TURN OFF BOTH EOF BITS
DCA I (CDRBLK+DEVDDC /STASH BACK
CDRCSE
NOP /START CARD READER
TAD (-200
DCA I (CDRBLK+DEVTIM /TWO SECOND TIMEOUT
DCA I (CDRBLK+DEVOLC /INITIALIZE COLUMN COUNTER
JMP I STCARD
STCDR8, NL3777 /MASK TO CLEAR ACTIVE
AND I (CDRBLK+DEVSTS
DCA I (CDRBLK+DEVSTS /CLEAR ACTIVE
JMP I STCARD
>/END OF IFNZRO CDRN
LISTOG CDRN
LISTOG PTRN
IFNZRO PTRN <
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** PTR SERVICE ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
PTRCNT, 0 /COUNT OF CHARS
/HERE AT INTERRUPT LEVEL WHEN PTR INTERRUPTS
INTPTR, PTRSF /SKIP ON PTR FLAG
JMP INTPR9 /NOT PTR CHECK NEXT DEVICE
PTRRB /GET FRAME FROM PTR AND CLEAR FLAG
DCA INTMP5 /SAVE CHAR
TAD (PTRBLK /ADDRESS OF DEVICE BLOCK
JMS IACTCK /CHECK DEVICE SHOULD BE ACTIVE
/ IF NOT DON'T RETURN
TAD INTMP5 /GET CHAR AGAIN
JMS IPUTCH /PUT CHAR INTO THE CHUNKS
NLOAD -1
TAD I (PTRBLK+DEVDRQ /UPDATE DATA REQUEST COUNT
DCA I (PTRBLK+DEVDRQ /AND SAVE NEW COUNT
ISZ PTRCNT /COUNT CHAR IN CURRENT BUFFER
TAD PTRCNT /GET CHAR COUNT
TAD (-240
SMA CLA
JMP INTPR5 /BRANCH IF HAVE ENOUGH
JMS PTRMOV /MOVE TAPE AGAIN
JMP INTDIS
INTPR5, JMS INTPR7 /QUEUE DATA TO 10
JMP INTDIS
/HERE TO SEND PTR DATA TO 10
INTPR7, 0
TAD PTRCNT
SNA CLA
JMP I INTPR7 /IF NO DATA DONE
JMS CLRACT /CLEAR DEVICE ACTIVE
TAD I (PTRBLK+DEVBF2
DCA I (PTRBLK+DEVBF1
DCA I (PTRBLK+DEVBF2
JMP I INTPR7
/HERE ONCE PER CLOCK TICK TO CHECK PTR
CLKPTR, IFZERO PDP8E <
PTRPE /REENABLE PTR/PTP INTS
>/END OF IFZERO PDP8E
TAD (PTRBLK /PREPARE
IOF
DCA INTDDB /FOR VARIOUS SUBROUTINES
TAD I (PTRBLK+DEVSTS /GET CURRENT STATUS
SMA CLA /IS DEVICE ACTIVE ?
JMP STRPTR /NO YET - TRY TO START IT
ISZ I (PTRBLK+DEVTIM /HAS DEVICE TIMED OUT ?
JMP CLKPR8 /NO
JMS INTPR7 /QUEUE DATA TO 10
TAD I (PTRBLK+DEVSTS
TAD (4001 /SET EOF & CLRACT
DCA I (PTRBLK+DEVSTS
CLKPR8, ION
JMP CLKPR9
/HERE TO PERHAPS START PTR MOVING
STRPTR,
TAD I (PTRBLK+DEVDRQ /GET DATA REQUEST COUNT
SNA CLA
JMP CLKPR8 /NONE SO DON'T START PTR
DCA PTRCNT /HAVE READ NOTHING YET
NLOAD 4000 /FLAG DEVICE IS ACTIVE
TAD I (PTRBLK+DEVSTS
DCA I (PTRBLK+DEVSTS
JMS PTRMOV /START TAPE MOVING
JMP CLKPR8
/SUBROUTINE TO MOVE THE TAPE
/ IF THERE AREN'T ENOUGH CHUNKS LEFT STOP READER
/ AND SEND WHAT WE HAVE SO FAR
PTRMOV, 0
TAD FRECNT
TAD (-ERSCNT
SPA CLA /SKIP IF HAVE CORE
JMP PRMOV3
PTRFC /START TAPE MOVING
TAD (-100
DCA I (PTRBLK+DEVTIM /RESET TIMER
JMP I PTRMOV
PRMOV3, JMS CLRACT /CLEAR DEVICE ACTIVE FLAG
JMS INTPR7 /SEND DATA TO 10
JMP I PTRMOV
PAGE
>/END OF IFNZRO PTRN
LISTOG PTRN
LISTOG PTPN
IFNZRO PTPN <
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** PTP SERVICE ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
PTPCNT, 0 /COUNTER FOR HEADER & TRAILER
/HERE AT INTERRUPT LEVEL TO CHECK FOR PTP INTERRUPTS
INTPTP, PTPSF /SKIP ON PTP FLAG
JMP INTPP9 /NOT PTP SO CHECK NEXT DEVICE
JMS INTPP0
JMP INTDIS
INTPP0, 0
TAD PTPCNT
SZA CLA /DO WE NEED HEADER/TRAILER ?
JMP INTPP5 /YES
TAD (PTPBLK
DCA INTDDB
JMS IGTOCH /GET NEXT CHAR IF ANY
JMP PTPFIN /NONE
CLL /CLEAR LINK
TAD (2000
SZL
JMP INTPP7 /THIS IS REALLY AN OPEN !
INTPP1, PTPLS /PUNCH CHAR
NLM3 /FOR TIMEOUT
DCA I (PTPBLK+DEVTIM
JMP I INTPP0
INTPP5, ISZ PTPCNT
JMP INTPP1 /GO PUNCH A 0
JMP INTPP1 / DITTO
INTPP7, NL0
TAD (-200 /THIS IS APP TWO FOLDS OF TAPE
DCA PTPCNT
JMP INTPP1 /GO PUNCH 1ST PART OF HEADER/TRAILER
/HERE WHEN DATA FOR PTP IS EXHAUSTED
PTPFIN, PTPCF /CLEAR ANY FLAGS
JMS CLRACT /MARK DEVICE AS NOT ACTIVE
JMP INTDIS
CLKPTP, IFZERO PTRN <
IFZERO PDP8E <
PTRPE /REENABLE READER/PUNCH INTERRUPTS
>/END OF IFZERO PDP8E
>/END OF IFZERO PTRN
TAD I (PTPBLK+DEVSTS
SMA CLA /IS PTP ACTIVE ?
JMP STRPTP /NO SO TRY TO START IT
ISZ I (PTPBLK+DEVTIM /YES - IS THIS TIMEOUT ?
JMP CLKPP9 /NO
IFNZRO FTTRBL <
TAD (PTPMSG-1
DCA ERRFLG /LEAVE MSG FOR OPERATOR
>/END OF IFNZRO FTTRBL
JMP CLKPP9
STRPTP, TAD I (PTPBLK+DEVOCN
SNA CLA
JMP CLKPP9 /NOTHING TO DO SO GO TO NEXT DEVICE
NL4000
IOF
TAD I (PTPBLK+DEVSTS
DCA I (PTPBLK+DEVSTS
JMS INTPP0
ION
JMP CLKPP9
/ PAGE
>/END OF IFNZRO PTPN
LISTOG PTPN
LISTOG PLTN
IFNZRO PLTN <
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** PLT SERVICE ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/DATA FOR THE PLT COMES IN 10 FORMAT - I.E. 6 BIT BYTES AS FOLLOWS:
/ 0040 PEN UP
/ 0020 PEN DOWN
/ 0010 DRUM UP
/ 0004 DRUM DOWN
/ 0002 PEN LEFT
/ 0001 PEN RIGHT
/HERE AT INTERRUPT LEVEL TO CHECK FOR PLT INTERRUPTS
INTPLT, PLTSKF /SKIP ON PLOTTER FLAG
JMP INTPL9 /CHECK NEXT DEVICE
INTPL0, TAD (PLTBLK
DCA INTDDB
JMS IGTOCH /GET NEXT CHAR IF ANY
JMP PLTFIN /NONE
/ PLOT HERE
JMP INTDIS
PLTFIN, PLTCLF /CLEAR ANY FLAGS
JMS CLRACT /MARK DEVICE AS NOT ACTIVE
JMP INTDIS
CLKPLT, TAD I (PLTBLK+DEVSTS
SMA CLA /IS PLT ACTIVE ?
JMP CLKPL2 /NO TRY TO START IT
ISZ I (PLTBLK+DEVTIM /YES - IS THIS TIMEOUT ?
JMP CLKPL9 /NO
JMP CLKPL9
CLKPL2, JMP CLKPL9 /CAN'T START PLT
/ PAGE
>/END OF IFNZRO PLTN
LISTOG PLTN
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** CLOCK SERVICE ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/HERE AT INTERRUPT LEVEL WHEN CLOCK GOES OFF
/TEST FOR CLK INTERRUPTS
INTCLK, CLKSCF /DID CLOCK GO OFF?
JMP INTCL9 /NOT CLOCK SO CHECK NEXT DEVICE
IFZERO PDP8E <
NL1 /IGNORE EVERY OTHER TICK
AND JIFSEC+1
SZA CLA
JMP INTCK4
>/END OF IFZERO PDP8E
ISZ CLKFLG /FLAG FOR NONINTERRUPT LEVEL CODE
SKP
HLT /WENT A MINUTE WITHOUT FINDING CLOCK FLAG ??
NLM1
DCA WRKREQ /SO WE FIND CLOCK FLAG
TAD JIFSEC+1
IFZERO PDP8I < AND (0077 >
IFZERO PDP8E < AND (0176 >
SZA CLA
JMP INTCK4
ISZ SECFLG /FLAG TIME FOR 64TH TICK CODE(APP. 1 / SEC)
IFNZRO FTDEBUG <
NLM1
JMS TRACEW /PUT WORD INTO THE TRACE
>/END OF IFNZRO FTDEBUG
INTCK4, ISZ JIFSEC+1
JMP INTDIS
ISZ JIFSEC
JMP INTDIS
JMP INTDIS
JIFSEC, ZBLOCK 2 /TICKED ONCE PER JIFFY
IFZERO FTDP01 <
/7720 THROUGH 7731 INCLUSIVE ARE USED BY DP8E
ZZ=.&4000
IFNZRO ZZ <
ZZ=7720-.
ZZ=ZZ&4000
IFNZRO ZZ <
ERROR /CODE OVERLAPS DP8E HARDWARE ADDRESSES
>/END OF IFNZRO ZZ
*7732 /SKIP DP8E ADDRESSES
>/END OF IFNZRO ZZ
>/END OF IFZERO FTDP01
/TEST FOR PARITY INTERRUPTS
INTMEM, MEMSMP MEMCMP /DID WE WIN A MEMORY PARITY ERROR
MEMTST, MEMSPO / MAYBE - DO WE HAVE THE OPTION ?
JMP INTNOT /DON'T HAVE OPTION OR NO ERROR
HLT /HAVE MEMORY PARITY ERROR SO HALT
/HERE IF GOT INTERRUPT WHICH WE CAN'T DETECT
INTNOT, ISZ INTCNT /COUNT UNKNOWN DEVICE INTERRUPTED
JMP INTDIS /DISMISS INTERRUPT
TAD (INTMSG-1 / "INT ERR"
JMS CTYEXC /TELL OPR
HLT
RCVLP6, NLOAD DEVCHK /DISPLACEMENT OF CHUNK COUNT
TAD DDB
DCA TEMPA /SAVE ADR OF DDB CHUNK COUNT
NLM1
TAD TEMP5
DCA TEMPB /SAVE ADR OF MSG'S CHUNK COUNT
TAD I TEMPB /NO OF CHUNKS IN THIS MESSAGE
TAD I TEMPA /PLUS PREVIOUS
DCA I TEMPA /STORE BACK
ION
JMP RCVADV /FORGET MESSAGE BUT NOT CHUNKS
PAGE
IFNZRO CNKFLD <
FIELD CNKFLD
DEFINE HLT <7402>
CHK1=1
CHK2=2
CHK3=3
CHK4=4
CHK5=5
CHK6=6
CHK7=7
CHAUTO=17
*20
>/END OF IFNZRO CNKFLD
/NODEID MESSAGE
NCLNID, BLOCK 100
/PER CONNECTION TABLES
CTRLTB, BLOCK DEVN
RCVDSP, BLOCK 1
BLOCK DEVN
/ THESE TABLES MUST FOLLOW AND BE SAME LENGTH
/ AS RCVDSP.
SLATAB,
BLOCK DEVN
MMLTAB,
BLOCK DEVN
SNATAB, /SOURCE NODE
BLOCK DEVN
ZZ=CTRLTB
ZZ=RCVDSP
ZZ=SLATAB
ZZ=MMLTAB
ZZ=SNATAB
/ OUTPUT MESSAGE BUFFERS
CTLSIZ=12 /DDCMP HEADER (8) + CHUNK COUNT (1) + CHUNK POINTER
SYNCHS, BLOCK 20 /WHERE SYN BUF WILL GO
SYNBUF=.-NUMSYN
IDLBUF=SYNBUF /NO SPECIAL BUFFER FOR IDLE MODE
CTLBUF, BLOCK 10
Z=4+MAXOLN+6
T10LEN=12+MAXOLN
T10BF1, BLOCK Z
T10BF2, BLOCK Z
T10LST, BLOCK Z
ZZ=T10BF1
ZZ=T10BF2
ZZ=T10LST
/QUEUE OF MESSAGES FROM DECSYSTEM-10 WHICH HAVEN'T BEEN LOOKED AT YET
RCVQUE,
ZZ=CTLSIZ^10
BLOCK ZZ
RCVLIM,
ZZ=RCVQUE
ZZ=RCVLIM
/STORAGE FOR TTY'S
/QUEUE OF INPUT FROM TTY'S
/ FIRST WORD IS LINE #
/ SECOND IS 8BIT CHAR
IFNDEF TIQLEN <TIQLEN=100>
TTIQUE, BLOCK TIQLEN
Z=.-BOOTSZ /BOOTSZ IS FIRST ADDR AFTER BOOT
ZZ=Z&4000 /SIGN OF DIFFERENCE
IFNZRO ZZ <*BOOTSZ>
/MACRO TO MAKE A DEVICE BLOCK FOR A TTY
/ 1ST ARG IS DEVICE BLOCK LABEL
/ 2ND ARG IS DEVICE ADR FOR DC02 TTY'S
/ 3RD ARG IS DEVICE ADR FOR KL8E TTY'S
/ 4TH ARG IS NONZERO IF TTY HAS HDW TABS
/ 5TH ARG IS TTY CARRIAGE WIDTH
/ 6TH ARG IS TTY FILLER CLASS
/ 7TH ARG IS RESTRICTED NODE NUMBER
DEFINE TTBLK NAME Q QQ QQQ QQQQ QQQQQ QQQQQQ <XLIST
IFNZRO FTDC02F <ZZ=Q>
IFZERO FTDC02F <ZZ=QQ+5>
TTYCNT=TTYCNT+1
XLIST
-QQQQQQ /DEVRNN
TTYCHK
TTYCNT-1
NAME, 100 /LH=OBJ TYPE,RH=CONNECT
XLIST
*.+DEVLNK-1
XLIST
FIRTTY /ADR OF PREVIOUS DEVICE BLOCK
XLIST
FIRTTY=.-DEVLNK-1
FIRDDB=FIRTTY
XLIST
ZZ /DEVICE ADDRESS
XLIST
ZZZ=ZZZ+1
*.+1 /SKIP LDBCOL
IFNDEF QQQQ < QQQQ=110 > /DEFAULT WIDTH IS 72
XLIST
QQQQ /TTY WIDTH
XLIST
ZZ=LDBFIL-1-LDBWID
*.+ZZ
-10 /FILLER FOR 10
-10 /FILLER FOR 11
-10 /FILLER FOR 12
-10 /FILLER FOR 13
-10 /FILLER FOR 14
-10 /FILLER FOR 15
Z=Z-1
IFNZRO Z <
XLIST >/END OF IFNZRO Z
>/END OF TTBLK
ZZZ=200 /DEVICE NUMBER FOR CTY
FIRTTY=0
Z=TTYN+1
/DEVICE DATA BLOCK FOR CTY
TTYCNT=0
TTBLK CTYBLK,0,0,CTYTAB,CTYWID,CTYFIL,CTYRNN
IFNZRO Z < TTBLK T00BLK,4010,T00TSF,T00TAB,T00WID,T00FIL,T00RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T01BLK,2010,T01TSF,T01TAB,T01WID,T01FIL,T01RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T02BLK,1010,T02TSF,T02TAB,T02WID,T02FIL,T02RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T03BLK,0410,T03TSF,T03TAB,T03WID,T03FIL,T03RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T04BLK,0210,T04TSF,T04TAB,T04WID,T04FIL,T04RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T05BLK,0110,T05TSF,T05TAB,T05WID,T05FIL,T05RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T06BLK,0050,T06TSF,T06TAB,T06WID,T06FIL,T06RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T07BLK,0030,T07TSF,T07TAB,T07WID,T07FIL,T07RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T10BLK,4004,T10TSF,T10TAB,T10WID,T10FIL,T10RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T11BLK,2004,T11TSF,T11TAB,T11WID,T11FIL,T11RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T12BLK,1004,T12TSF,T12TAB,T12WID,T12FIL,T12RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T13BLK,0404,T13TSF,T13TAB,T13WID,T13FIL,T13RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T14BLK,0204,T14TSF,T14TAB,T14WID,T14FIL,T14RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T15BLK,0104,T15TSF,T15TAB,T15WID,T15FIL,T15RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T16BLK,0044,T16TSF,T16TAB,T16WID,T16FIL,T16RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T17BLK,0024,T17TSF,T17TAB,T17WID,T17FIL,T17RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T20BLK,4002,0,T20TAB,T20WID,T20FIL,T20RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T21BLK,2002,0,T21TAB,T21WID,T21FIL,T21RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T22BLK,1002,0,T22TAB,T22WID,T22FIL,T22RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T23BLK,0402,0,T23TAB,T23WID,T23FIL,T23RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T24BLK,0202,0,T24TAB,T24WID,T24FIL,T24RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T25BLK,0102,0,T25TAB,T25WID,T25FIL,T25RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T26BLK,0042,0,T26TAB,T26WID,T26FIL,T26RNN
>/END OF IFNZRO Z
IFNZRO Z < TTBLK T27BLK,0022,0,T27TAB,T27WID,T27FIL,T27RNN
>/END OF IFNZRO Z
IFZERO Z < XLIST >
TTYFEA, 2 /NUMBER OF CHARS IN FEATURES
0 /NOTHING FANCY
TTYN+1 /NUMBER OF LINES
/ MACRO TO MAKE DEVICE BLOCK FOR NON-TELETYPE DEVICES
/ 1ST ARGUMENT IS DDB LABEL NAME
/ 2ND ARGUMENT IS DEVICE TYPE CODE
/ 3RD ARGUMENT IS RESTRICTED NODE NUMBER
DEFINE DBLOCK NAME Q QQ <XLIST
XLIST
ZZ=-1 /DEFAULT
IFNZRO LPTN <
IFZERO .+2-LPTBLK <ZZ=LPTCHK>/IF LPT, USE LPT VALUE
>/END OF IFNZRO LPTN
DEVCNT=DEVCNT+1
XLIST
-QQ /DEVRNN
ZZ /MAX CHUNKS
DEVCNT-1
NAME, Q^100
XLIST
Z=DEVLNK-1
*.+Z
XLIST
FIRDDB /ADR OF PREVIOUS DEVICE BLOCK
XLIST
FIRDDB=.-DEVLNK-1
XLIST >/END OF DEFINE DBLOCK
IFNZRO CDRN <
/DEVICE DATA BLOCK FOR CDR
DEVCNT=0
DBLOCK CDRBLK,2,CDRRNN
3 /LENGTH OF FEATURES
1 /DECIMAGE
120 /COLUMNS/CARD=80
1 /LOW SPEED
>/END OF IFNZRO CDRN
IFNZRO LPTN <
/DEVICE DATA BLOCK FOR LPT
/ SPECIAL DEVSTS BITS:
/ LOW ORDER BIT IS A COUNT OF OPENS EXERCISED
DEVCNT=0
DBLOCK LPTBLK,3,LPTRNN
Z=LPTWID&7200
IFNZRO Z < 5 > /LENGTH OF FEATURES
IFZERO Z < 4 > /LENGTH OF FEATURES
IFZERO FTLPLC < 10 > /ANSI 68
IFNZRO FTLPLC < 12 > /ANSI 68, LOWER CASE
IFZERO Z < LPTWID > /CARRIAGE WIDTH
IFNZRO Z < Z=LPTWID&177; 200+Z; 1> /CARRIAGE WIDTH
305 /OVERPRINT, MULTIPART PAPER, LOWSPEED
4 /FORMS WIDTH CHANGEABLE,
>/END OF IFNZRO LPTN
IFNZRO PTRN <
/DEVICE DATA BLOCK FOR PTR
DEVCNT=0
DBLOCK PTRBLK,6,PTRRNN
1; 0 /FEATURES
>/END OF IFNZRO PTRN
IFNZRO PTPN <
/DEVICE DATA BLOCK FOR PTP
DEVCNT=0
DBLOCK PTPBLK,5,PTPRNN
1; 0 /FEATURES
>/END OF IFNZRO PTPN
IFNZRO PLTN <
/DEVICE DATA BLOCK FOR PLT
DEVCNT=0
DBLOCK PLTBLK,20,PLTRNN
1; 0 /FEATURES
>/END OF IFNZRO PLTN
DEFINE X Q <IFDEF Q < Q >>
/TABLE OF DDB ADDRESSES
DDBTAB,
X CTYBLK
X T00BLK
X T01BLK
X T02BLK
X T03BLK
X T04BLK
X T05BLK
X T06BLK
X T07BLK
X T10BLK
X T11BLK
X T12BLK
X T13BLK
X T14BLK
X T15BLK
X T16BLK
X T17BLK
X T20BLK
X T21BLK
X T22BLK
X T23BLK
X T24BLK
X T25BLK
X T26BLK
X T27BLK
IFDEF CDRBLK < CDRBLK>
IFDEF LPTBLK < LPTBLK>
IFDEF PTRBLK < PTRBLK>
IFDEF PTPBLK < PTPBLK>
IFDEF PLTBLK < PLTBLK>
/STRINGS PUT OUT BY SCNSER
XOFMSG, 0223 /XOF = ^S
4377 /FILLER (WITHOUT REGARD FOR RACE CREED OR CLASS)
TTOSPC, " /BLANK
" /BLANK
" /BLANK
" /BLANK
" /BLANK
" /BLANK
" /BLANK
4000+" /FINAL BLANK
CRLMSG, 0215 /CARRIAGE RETURN
4012 /LINE FEED
DEFINE DC7MSG < XLIST
0104 /ASCII "D"
0303 /ASCII "C"
0267 /ASCII "7"
IFZERO PDP8I < 0261 > /ASCII "1"
IFZERO PDP8E < 0262 > /ASCII "2"
0116 /ASCII "N"
0120 /ASCII "P"
XLIST>/END OF DEFINE DC7MSG
DEFINE DPMSG < XLIST
0104 /ASCII "D"
0120 /ASCII "P"
IFNZRO FTDP01 < 0060 /ASCII "0"
0261 /ASCII "1"
>/END OF IFNZRO FTDP01
IFZERO FTDP01 < 0270 /ASCII "8"
0305 /ASCII "E"
>/END OF IFZERO FTDP01
0040
XLIST>/END OF DEFINE DPMSG
DEFINE BEGMSG < XLIST
0215 /CARRIAGE RETURN
0215 / EXTRA CR FOR FILLER
0012 /LINE FEED
0207 /BELL
0207 /BELL
0245 /ASCII "%"
0245 /ASCII "%"
XLIST >/END OF DEFINE BEGMSG
/COMMON MESSAGE BEGINNER FOR FATAL MESSAGES
DEFINE FATMSG < XLIST
0215 /CARRIAGE RETURN
0215 / EXTRA CR FOR FILLER
0012 /LINE FEED
0207 /BELL
0207 /BELL
0077 /ASCII "?"
0077 /ASCII "?"
XLIST >/END OF DEFINE FATMSG
/MESSAGE SENT WHEN STATION RESTARTS
RSTMSG, 377
0012 /EXTRA LINE FEED
207 /EXTRA BELL
0012 /EXTRA LINE FEED
BEGMSG
"R
0145 /E
0363 /S
0164 /T
0341 /A
0162 /R
0164 /T
0151 /I
0356 /N
0347 /G
" /BLANK
DC7MSG
" /BLANK
0116 /N
0117 /O
0104 /D
0105 /E
" /BLANK
0042 /"
OURID,
IFDEF DC72ID <
DC72ID
>/END OF IFDEF DC72ID
IFNDEF DC72ID <
"D;"C;"7;PDP8+260;"N;"P
>/END OF IFNDEF DC72ID
0042 /"
240 /SPACE
215
012
TTOBEL, 4207 /BELL
NCOMSG, BEGMSG
"T;"T;"Y;" ;"N;"O;"T;" ;"C;"O;"N;"N;"E;"C;"T;"E;"D;215;4012
/MESSAGE WHEN GET CHAR FROM TTY KEYBOARD AND STATION NOT IN CONTACT
NICMSG, FATMSG
"N;"O;"T;" ;"I;"N;" ;"C;"O;"N;"T;"A;"C;4000+"T
/MESSAGE FOR CTY WHEN MAKE CONTACT
CONMSG, BEGMSG
TENID, 240;240;240;240;240;240
" ;"H;"A;"S;" ;"M;"A;"D;"E;" ;"C;"O;"N;"T;"A;"C;"T;215;4012
BMTMSG, 377 /SPECIAL FILLER
FATMSG
"B;"A;"D;" ;"M;"S;"G;" ;"T;"Y;"P;4000+"E
/UNRECOGNIZED INTERRUPT MSG
INTMSG, 377 /SPECIAL FILLER TO START
FATMSG
DC7MSG
" ;"I;"N;"T;" ;"E;"R;4000+"R
/AUTODUMP MESSAGE
DMPMSG, 377 /RUBOUT TO BEGIN
FATMSG
DC7MSG
" ;"C;"R;"A;"S;"H;" ;"P;"C;4000+"=
DPTMSG, BEGMSG
DPMSG
" ;"T;"I;"M;"E;"O;"U;4000+"T
IFNZRO CDRN < /MESSAGE WHEN GET READ CHECK ON CARDREADER
RCKMSG, BEGMSG
"R;"D;"C;"H;"K;" ;"-;" ;"R;"E;"F;"E;"E;"D;" ;"C;"A;"R;"D;215;4012
>/END OFIFNZRO CDRN
IFNZRO FTTRBL <
IFNZRO LPTN <
/MESSAGE WHEN LPT TIMES OUT
LPTMSG, BEGMSG
"L;"P;"T;" ;"T;"R;"B;4000+"L
>/END OF IFNZRO LPTN
IFNZRO PTPN <
/MSG WHEN PTP TIMES OUT
PTPMSG, BEGMSG
"P;"T;"P;" ;"T;"R;"B;4000+"L
>/END OF IFNZRO PTPN
>/END OF IFNZRO FTTRBL
IFZERO FTDP01 <
/MESSAGE IF DP8E GETS A BUS ERROR
DBEMSG, BEGMSG
DPMSG
" ;"B;"U;"S;" ;"E;"R;4000+"R
/MESSAGE WHEN CARRIER LOST
LCRMSG, BEGMSG
"C;"A;"R;"R;"I;"E;"R;" ;"L;"O;"S;"T;215;4012
CARMSG, BEGMSG
"C;"A;"R;"R;"I;"E;"R;" ;"B;"A;"C;"K;215;4012
>/END OF IFZERO FTDP01
IFNZRO FTDP01 <
/MSG WHEN SYNCHRONOUS MODEM LOSES CONTACT
ENDMSG, BEGMSG
DPMSG
" ;"E;"N;"D;" ;"F;"L;"A;4000+"G
>/END OF IFNZRO FTDP01
IFNZRO CDRN <
/CARD CODE TRANSLATION TABLES
/ TRICK IS USE ROWS TO INDEX INTO THE TABLES
/ IF THE RESULT HAS THE SIGN BIT ON CAN'T COMPRESS COLUMN
/TABLE TO TRANSLATE ROWS 1/2/3/4/5
CD1TAB, 0000; 2005; 2004; 4000; 2003; 4000; 4000; 4000
2002; 4000; 4000; 4000; 4000; 4000; 4000; 4000
3001; 4000; 4000; 4000; 4000; 4000; 4000; 4000
4000; 4000; 4000; 4000; 4000; 4000; 4000; 4000
/TABLE TO TRANSLATE ROWS 6/7/8/9
CD2TAB, 0000; 2011; 1010; 4000; 2007; 4000; 2017; 4000
2006; 4000; 2016; 4000; 4000; 4000; 4000; 4000
>/END OF IFNZRO CDRN
/TABLE FOR INTERPRETING TTY & LPT CHAR FUNCTIONS
/ BIT DEFINITIONS ARE:
CHRBRK=0
CHRARR=0
CHRSUP=0
CHRALT=0
CHRFLL=2000
CHRDEF=4000 /GO INTO DEFERRED ECHO
CHRXOF=0200 /CHAR IS AN XOF
CHRHT=0040 /CHAR IS AN HT
CHRHMO=0020 /CHAR PERFORMS HORIZONTAL MOTION
CHRCR=0010 /CHAR IS A CARRIAGE RETURN
CHRLC=0004 /CHAR IS LOWER CASE
/ 0002 /FOR LPT CHAR IS SPECIAL MOTION
/ 0001 /FOR LPT FLUSH CHAR
CHRTAB, 0001 /ASCII 0
CHRDEF+CHRARR+0001 /ASCII 1 = ^A
CHRDEF+CHRARR+0001 /ASCII 2 = ^B
CHRDEF+CHRBRK+CHRARR+0001 /ASCII 3 = ^C
CHRDEF+CHRARR+0001 /ASCII 4 = ^D
CHRDEF+CHRARR+0001 /ASCII 5 = ^E
CHRDEF+CHRARR+0001 /ASCII 6 = ^F
CHRDEF+CHRBRK+0001 /ASCII 7 = ^G = BELL
CHRDEF+CHRFLL+0001 /ASCII 10 = ^H
CHRFLL+CHRHT+0002 /ASCII 11 = ^I = HORIZONTAL TAB
CHRDEF+CHRBRK+CHRFLL+0002 /ASCII 12 = LINE FEED
CHRDEF+CHRBRK+CHRFLL+0002 /ASCII 13 = VERT TAB
CHRDEF+CHRBRK+CHRFLL+0002 /ASCII 14 = FORM FEED
CHRFLL+CHRCR+0002 /ASCII 15 = CARRIAGE RETURN
CHRDEF+CHRARR+0001 /ASCII 16 = ^N
CHRDEF+CHRARR+0001 /ASCII 17 = ^O
CHRDEF+CHRARR+0002 /ASCII 20 = ^P
CHRDEF+CHRARR+0002 /ASCII 21 = ^Q = XON
CHRDEF+CHRARR+0002 /ASCII 22 = ^R
CHRDEF+CHRARR+CHRXOF+0002 /ASCII 23 = ^S = XOF
CHRDEF+CHRARR+0002 /ASCII 24 = ^T
CHRDEF+CHRSUP+0001 /ASCII 25 = ^U - NOT CHRARR BECAUSE SPECIAL HANDLING
CHRDEF+CHRARR+0001 /ASCII 26 = ^V
CHRDEF+CHRARR+0001 /ASCII 27 = ^W
CHRDEF+CHRARR+0001 /ASCII 30 = ^X
CHRDEF+CHRARR+0001 /ASCII 31 = ^Y
CHRDEF+CHRBRK+CHRARR+0001 /ASCII 32 = ^Z
CHRDEF+CHRBRK+CHRALT+0001 /ASCII 33 = ALTMODE
CHRDEF+CHRARR+0001 /ASCII 34 = ^\
CHRDEF+CHRARR+0001 /ASCII 35 = ^]
CHRDEF+CHRARR+0001 /ASCII 36 = ^^
CHRDEF+CHRARR+0001 /ASCII 37 = ^_
CHRBLA, /CHARACTER WITH CHRHMO BIT SET FOR TAB SIMULATION
CHRHMO /ASCII 40 =
CHRHMO /ASCII 41 = !
CHRHMO /ASCII 42 = "
CHRHMO /ASCII 43 = #
CHRHMO /ASCII 44 = $
CHRHMO /ASCII 45 = %
CHRHMO /ASCII 46 = &
CHRHMO /ASCII 47 = '
CHRHMO /ASCII 50 = (
CHRHMO /ASCII 51 = )
CHRHMO /ASCII 52 = *
CHRHMO /ASCII 53 = +
CHRHMO /ASCII 54 = ,
CHRHMO /ASCII 55 = -
CHRHMO /ASCII 56 = .
CHRHMO /ASCII 57 = /
CHRHMO /ASCII 60 = 0
CHRHMO /ASCII 61 = 1
CHRHMO /ASCII 62 = 2
CHRHMO /ASCII 63 = 3
CHRHMO /ASCII 64 = 4
CHRHMO /ASCII 65 = 5
CHRHMO /ASCII 66 = 6
CHRHMO /ASCII 67 = 7
CHRHMO /ASCII 70 = 8
CHRHMO /ASCII 71 = 9
CHRHMO /ASCII 72 = :
CHRHMO /ASCII 73 = ;
CHRHMO /ASCII 74 = <
CHRHMO /ASCII 75 = =
CHRHMO /ASCII 76 = >
CHRHMO /ASCII 77 = ?
CHRHMO /ASCII 100 = @
CHRHMO /ASCII 101 = A
CHRHMO /ASCII 102 = B
CHRHMO /ASCII 103 = C
CHRHMO /ASCII 104 = D
CHRHMO /ASCII 105 = E
CHRHMO /ASCII 106 = F
CHRHMO /ASCII 107 = G
CHRHMO /ASCII 110 = H
CHRHMO /ASCII 111 = I
CHRHMO /ASCII 112 = J
CHRHMO /ASCII 113 = K
CHRHMO /ASCII 114 = L
CHRHMO /ASCII 115 = M
CHRHMO /ASCII 116 = N
CHRHMO /ASCII 117 = O
CHRHMO /ASCII 120 = P
CHRHMO /ASCII 121 = Q
CHRHMO /ASCII 122 = R
CHRHMO /ASCII 123 = S
CHRHMO /ASCII 124 = T
CHRHMO /ASCII 125 = U
CHRHMO /ASCII 126 = V
CHRHMO /ASCII 127 = W
CHRHMO /ASCII 130 = X
CHRHMO /ASCII 131 = Y
CHRHMO /ASCII 132 = Z
CHRHMO /ASCII 133 = [
CHRHMO /ASCII 134 = \
CHRHMO /ASCII 135 = ]
CHRHMO /ASCII 136 = ^
CHRHMO /ASCII 137 = _
CHRHMO /ASCII 140 =
CHRLC+CHRHMO /ASCII 141 = LC A
CHRLC+CHRHMO /ASCII 142 = LC B
CHRLC+CHRHMO /ASCII 143 = LC C
CHRLC+CHRHMO /ASCII 144 = LC D
CHRLC+CHRHMO /ASCII 145 = LC E
CHRLC+CHRHMO /ASCII 146 = LC F
CHRLC+CHRHMO /ASCII 147 = LC G
CHRLC+CHRHMO /ASCII 150 = LC H
CHRLC+CHRHMO /ASCII 151 = LC I
CHRLC+CHRHMO /ASCII 152 = LC J
CHRLC+CHRHMO /ASCII 153 = LC K
CHRLC+CHRHMO /ASCII 154 = LC L
CHRLC+CHRHMO /ASCII 155 = LC M
CHRLC+CHRHMO /ASCII 156 = LC N
CHRLC+CHRHMO /ASCII 157 = LC O
CHRLC+CHRHMO /ASCII 160 = LC P
CHRLC+CHRHMO /ASCII 161 = LC Q
CHRLC+CHRHMO /ASCII 162 = LC R
CHRLC+CHRHMO /ASCII 163 = LC S
CHRLC+CHRHMO /ASCII 164 = LC T
CHRLC+CHRHMO /ASCII 165 = LC U
CHRLC+CHRHMO /ASCII 166 = LC V
CHRLC+CHRHMO /ASCII 167 = LC W
CHRLC+CHRHMO /ASCII 170 = LC X
CHRLC+CHRHMO /ASCII 171 = LC Y
CHRLC+CHRHMO /ASCII 172 = LC Z
CHRDEF /ASCII 173 =
CHRDEF /ASCII 174 =
CHRDEF+CHRBRK+CHRALT /ASCII 175 = ALTMODE
CHRDEF+CHRBRK+CHRALT /ASCII 176 = ALTMODE
CHRDEF+CHRSUP+0001 /ASCII 177 = RUBOUT
LISTOG LPTN
IFNZRO LPTN <
LPTTBL, 0 /CHAR 11 = HORIZONTAL TAB
0001 /CHAR 12 = LF = CHANNEL 8
0002 /CHAR 13 = VT = CHANNEL 7
-2 /CHAR 14 = FORM FEED = CHANNEL 1
-1 /CHAR 15 = CARRIAGE RETURN
0 /CHAR 16 = CHANGE RIBBON TO RED
0 /CHAR 17 = CHANGE RIBBON TO BLACK
0100 /CHAR 20 = DC0 = CHANNEL 2
0040 /CHAR 21 = DC1 = CHANNEL 3
0020 /CHAR 22 = DC2 = CHANNEL 4
0010 /CHAR 23 = DC3 = CHANNEL 5
0004 /CHAR 24 = DC4 = CHANNEL 6
/SIMULATED CARRIAGE CONTROL TAPE FOR LPT
LPTVFU, 011 / 5-8
051 / 3-5-8
031 / 4-5-8
051 / 3-5-8
011 / 5-8
071 / 3-4-5-8
011 / 5-8
051 / 3-5-8
031 / 4-5-8
055 / 3-5-6-8
011 / 5-8
071 / 3-4-5-8
011 / 5-8
051 / 3-5-8
031 / 4-5-8
051 / 3-5-8
011 / 5-8
071 / 3-4-5-8
011 / 5-8
057 / 3-5-6-7-8
031 / 4-5-8
051 / 3-5-8
011 / 5-8
071 / 3-4-5-8
011 / 5-8
051 / 3-5-8
031 / 4-5-8
051 / 3-5-8
011 / 5-8
175 / 2-3-4-5-6-8
011 / 5-8
051 / 3-5-8
031 / 4-5-8
051 / 3-5-8
011 / 5-8
071 / 3-4-5-8
011 / 5-8
051 / 3-5-8
031 / 4-5-8
057 / 3-5-6-7-8
011 / 5-8
071 / 3-4-5-8
011 / 5-8
051 / 3-5-8
031 / 4-5-8
051 / 3-5-8
011 / 5-8
071 / 3-4-5-8
011 / 5-8
055 / 3-5-6-8
031 / 4-5-8
051 / 3-5-8
011 / 5-8
071 / 3-4-5-8
011 / 5-8
051 / 3-5-8
031 / 4-5-8
051 / 3-5-8
011 / 5-8
010 / 5
010 / 5
010 / 5
010 / 5
010 / 5
010 / 5
-1 /FLAG END OF TAPE
>/END OF IFNZRO LPTN
LISTOG LPTN
STARTC, ENQ;6;0;0;0;1;111;225 /DDCMP START MESSAGE
STARTD, SOH;0;0;0;0;1 /START OF DATA MESSAGE
DEFINE VAL Q < Q
XLIST; ZZZ=ZZZ+1; XLIST>/END OF DEFINE VAL
ZZZZ=.
CNF, 0 /LENGTH
ZZZ=0
VAL 5 /MESSAGE TYPE
IFNZRO LPTN <
VAL 3 /OBJECT CLASS
VAL LPTN
VAL 0 /DESCRIPTION
>/END OF IFNZRO LPTN
VAL 1 /OBJECT TYPE
VAL TTYN+1
VAL 0 /DESCRIPTION
IFNZRO CDRN <
VAL 2 /OBJECT TYPE
VAL CDRN
VAL 0 /DESCRIPTION
>/END OF IFNZRO CDRN
ZZZZZ=.
*ZZZZ
ZZZ
*ZZZZZ
FREDCK, 0 /COUNT OF CHUNKS FREED BY FRECKS
DEFINE X Q QQ QQQ <XLIST
IFNZRO Q <XLIST
Z-QQ
QQQ
XLIST
Z=QQ >/END OF IFNZRO Q
XLIST >/END OF X
Z=0
DEVTYP, X 1,1,CONTTY /CONNECT FOR TTY
X CDRN,2,CONCDR
X LPTN,3,CONLPT
/CONSIDER THE FOLLOWING METHOD OF CACULATING CRC-16
/ CALL: PUSHJ P,CRCALC
/ CRCALC: XOR C,CRC
/ ANDI C,377
/ LSH CRC,-10
/ XOR CRC,TAB(C)
/RH OF TABLE FOLLOWS IMMEDIATELY, LH IS CRCTAB+400
CRCTAB,
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** CHUNKS ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/FORMAT OF CHUNKS IS
/ LINK WORD (I.E. POINTER TO NEXT CHUNK)
/ DATA
/ LAST DATA WORD WITH SIGN BIT SET(FLAGS END OF DATA IN BUFFER)
/ REMAINING SPACE IN CHUNK, IF ANY
/CHUNKS MUST BEGIN ON A MULTIPLE OF CNKSIZ
Z=.+CNKSIZ-1
ZZ=-CNKSIZ
*Z&ZZ
FIRCNK=.+1000 /START CHUNKS AFTER CRC TABLE
PAGE /SO SYSCHK BEGINS ON A PAGE BOUNDRY
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** SYSCHK - ONCE ONLY SYSTEM DIAGNOSTIC ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/ONCE ONLY SYSTEM ANALYZER
/ CODE IS OVERWRITTEN BY CHUNKS SO CAN ONLY BE EXECUTED ONCE
SYSCHK, SKP /TRY TO SKIP
7402 /IT DIDN'T WORK ? ! ?
NL0 /ZERO AC
SZA /SKIP IF AC IS ZERO
7402 /HARDWARE FAILURE
SPA /SKIP IF AC IS POSITIVE
7402 /HARDWARE FAILURE
SMA /SKIP IF AC IS NEGATIVE
SKP /SHOULDN'T HAVE SKIPPED SO OK
7402 /HARDWARE FAILURE
NL1 /PUT 1 IN AC
SNA /BE SURE AC IS NON ZERO
7402
BSW /IF AN 8E SWAP HALVES
TAD (7700
IFZERO PDP8I <
SZA CLA
>/END OF IFZERO PDP8I
IFNZRO PDP8I <
SNA CLA
>/END OF IFNZRO PDP8I
JMP SCHK00 /CODE IS FOR RIGHT MACHINE
JMS INFTYP /TYPE CR/LF/?
JMS INLTYP /TRYING TO RUN 8I CODE ON AN 8E(OR VICE VERSA)
DC7MSG
" ;"W;"O;"N;47;"T;" ;"R;"U;"N;" ;"O;"N;" ;"A;" ;"P;"D;"P;"8
IFZERO PDP8I < 4000+"E >
IFZERO PDP8E < 4000+"I >
HLT /RETURNS HERE AFTER TYPEING MESSAGE
JMP SYSCHK /IF OPERATOR CONTINUES TEST AGAIN
SCHK00, JMS INLTYP
15;15;207;12;377
"[;"I;"N;"I;"T;"I;"A;"L;"I;"Z;"I;"N;"G
" ;"N;"E;"T;"W;"O;"R;"K;"
IFNZRO FTLBACK < "L;"O;"O;"B;"A;"C;"K;" ;"T;"E;"S;"T;" >
IFZERO FTLBACK < DC7MSG >
" ;4366
CDFINS /PICK UP WORD FROM INSTRUCTION FIELD
TAD I (202 /GET VERSION NUMBER
DCA CHK1 /SAVE IT
CDFCNK
TAD CHK1 /GET VERSION
AND (7700
CLL RTR
RTR
RTR
JMS INIOCT
JMS INLTYP
".+4000
TAD CHK1
AND (0077
JMS INIOCT /TYPE VERSION NUMBER
JMS INLTYP
" ;"N;"O;"D;"E
240 /BLANK
42
IFDEF DC72ID <
DC72ID
>/END OF IFDEF DC72ID
IFNDEF DC72ID <
"D;"C;"7;PDP8+260;"N;"P
>/END OF IFNDEF DC72ID
4042
JMS INLTYP
"];15;15;12;4012
JMP SCHK01
PAGE
SCHK01, IFZERO PDP8E <CAF> /ON 8E CLEAR ALL FLAGS
/HERE TO CHECK SYSTEM CLOCK IS PRESENT AND ACCURATE
CLKECI /RESET THE CLOCK
NL0 /GIVE IT LOTS OF TIME FOR FIRST TICK
JMS SCHK02 /GO GET 1ST TICK
CLKSCF /AND THERE SHOULD NOT BE ANOTHER FLAG UP YET
SKP /OK IT WASN'T UP AGAIN
JMP SCHK03 /IT DID COME UP AGAIN ??
/ASSUME LINE FREQUENCY IS 50CYCLE
IFZERO PDP8E <TAD (-6231-240 > /6231 = 3226.
IFZERO PDP8I <TAD (-3636-240 > /3636 = 1951.
JMS SCHK02 /TIME TICK
TAD CHK1
SMA /BE SURE IT ALMOST TOOK UP ALL OF TIME
JMP SCHK03 /NO WHERE NEAR RIGHT
TAD (500
SMA CLA /IS THIS IN RANGE FOR 50 CYCLE ?
JMP SCHK04 /YES
DCA HERTZF /NOT 50 CYCLE
/NOT 50 CYCLES SO ASSUME 60 CYCLES
IFZERO PDP8E <TAD (-5177-240 > /5177 = 2688.
IFZERO PDP8I <TAD (-3131-240 > /3131 =3225.
JMS SCHK02
TAD CHK1
SMA
JMP SCHK03
TAD (500
SPA CLA
JMP SCHK03
JMP SCHK04 /CLOCK IS OK SO GO ON
/HERE TO WAIT FOR A CLOCK TICK
/ LOOP TAKES 10.25US ON PDP8I
/ LOOP TAKES 6.2US ON A PDP8E
SCHK02, 0
DCA CHK1 /SAVE MAX COUNT
IFZERO PDP8E < /TIME TWO TICKS FOR PDP8E
CLKSCF /(1.2US)IS CLOCK FLAG UP ?
SKP /(1.2US) NO
JMP .+4 /HAVE SEEN ONE CLOCK TICK
ISZ CHK1 /(2.6US)
JMP .-4 /(1.2US)KEEP WAITING FOR CLOCK
JMP SCHK03 /TIMED OUT ON FIRST TICK !?!
>/END OF IFZERO PDP8E
CLKSCF /(1.2 OR 4.25US)IS CLOCK FLAG UP ?
SKP /(1.2 OR 1.5US) NO
JMP I SCHK02 /HAVE SEEN ONE CLOCK TICK
ISZ CHK1 /(2.6 OR 3.0US)
JMP .-4 /(1.2 OR 1.5US)KEEP WAITING FOR CLOCK
/HERE WHEN CLOCK IS MISBEHAVING
SCHK03, JMS INBTYP /TYPE A CR/LF/%
JMS INLTYP
IFZERO PDP8E < "D;"K;"8 >
IFZERO PDP8I < "K;"W;"8 >
" ;"E;"R;"R;"O;"R;215;4012
HLT
JMP SCHK01 /TRY AGAIN IF HE INSISTS
HERTZF, 6 /NONZERO MEANS RUNNING ON 50 CYCLE
/MEMORY PARITY CHECK
SCHK04,
/HERE TO SEE IF MEMORY PARITY OPTION IS PRESENT
/ NOT NECESSARY ON PDP8E'S
IFNZRO PDP8E <
TAD (NOP
CDFINS /PREPARE TO WRITE INSTRUCTION FIELD
MEMCMP /CLEAR MEMORY PARITY ERROR FLAG
MEMSMP /SKIP IF WE HAVE PARITY OPTION
DCA I (MEMTST /WE DON'T
NL0
TAD I (MEMTST /PICK UP SKP OR NOP
CDFCNK
DCA SCHK05
>/END OF IFNZRO PDP8E
JMP SCHK06
SCHK05, 0
/HERE TO SEE HOW MUCH MEMORY IS PRESENT
/ ADJUST DISMAX, DISCDF AND TRACE CODE ACCORDINGLY
SCHK06, CDFINS /SET TO INSTRUCTION FIELD TO CHANGE BUGGER
DCA I (DISMAX /INITIALIZE MAX FIELD WE HAVE
TAD (7577
DCA I (BUGGER /INITIALIZE BUGGER TO POINT TO 200 WORD AREA
SCHK07, TAD I (DISMAX
CLL RAL
CLL RTL
TAD (CDF
DCA .+1
CDFINS
TAD (7402 /BIT PATTERN TO STORE INTO FIELD
DCA I (0 /AND STORE IN MEMORY
TAD (-7402
TAD I (0 /WILL LEAVE 0 IF THERE BANK PRESENT
CDFINS
SZA CLA /IS THIS MEMORY BANK THERE ?
JMP SCHK08 /NO
ISZ I (DISMAX
TAD I (DISMAX
TAD (-10
SZA CLA
JMP SCHK07
SCHK08, TAD I (DISMAX
NEGATE
TAD (0010
DCA I (DISMIN
/NOW CHANGE TRACE IF WE HAVE AN EXTRA FIELD
TAD (-CNKFLD-1
TAD I (DISMAX
SPA SNA CLA
JMP SCHK10 /NO NEXT FIELD SO LEAVE WELL ENOUGH ALONE
CDFINS /NOW WE ARE CHANGING INSTRUCTIONS IN FIELD 0
TAD (CDFCNK+0010
DCA I (TRACEW+1 /SET SO DUMP INTO TRACE FIELD
TAD I (TRCWD2 / THIS IS A (JMP I TRACEW)
DCA I (TRCWD1 /EXIT ROUTINE EARLY
NLM1
DCA I (BUGGER /START BY DUMPING INTO WORD 0
CDFCNK+10
DCA CHK1
TAD (7402
DCA I CHK1
ISZ CHK1
JMP .-3
JMP SCHK10
PAGE
SCHK10,
LISTOG TTYN
IFNZRO TTYN <
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** SYSCHK FOR TTY LINES ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/HERE TO CHECK TTYS ARE REASONABLE
/ FIRST CHECK THAT CHAR OUTPUT DOES NOT RAISE FLAG IMMEDIATELY
/ AND THAT IT DOES RAISE FLAG A REASONABLE AMOUNT OF TIME
CDFCNK
IFNZRO FTDC02F < /FIRST BE SURE DC02F IS INSTALLED
TAD (0017 /SELECT ALL GROUPS
DCMTPF /GET TRANSMIT FLAGS
AND (0017 /SHOULD HAVE CLEARED GROUP SELECT
SZA CLA
JMP SCHK25 /COMPLAIN ABOUT DC02F THEN FIX IT
>/END OF IFNZRO FTDC02F
DCA CHK1 /START WITH TTY0
SCHK11, CDFCNK /SET TO CHUNK DATAFIELD
TAD CHK1
TAD (DDBTAB+1
DCA CHK2
TAD I CHK2 /GET ADR OF DEVICE BLOCK
TAD [LDBADR /POINT TO DEVICE ADDRESS WORD
DCA CHK2 /SAVE ADR OF WORD WITH DEVICE ADR
TAD (-15 /GIVE TTY .208 SEC TO XMT FLAG
DCA INISEC
DCA CHK5 /SET NONZERO TO FLAG LINE IS RUNNING OPEN
TAD (207 /ASCII BELL
IFNZRO FTDC02F <
/HERE TO TYPE A CHAR ON TTY
DCA CHK3 /SAVE CHAR
TAD (0017 /SELECT ALL GROUPS, NO LINES
DCMTON
NL0
TAD I CHK2 /SELECT THIS GROUP, THIS LINE
DCMTON
NL0
TAD CHK3 /GET CHAR AGAIN
DCMTCF DCMTPC /TYPE CHAR
NL0
>/END OF IFNZRO FTDC02F
IFZERO FTDC02F <
/HERE TO TYPE A CHAR
DCA CHK3 /SAVE CHAR
TAD I CHK2 /GET TLS FOR LINE
DCA .+2
TAD CHK3 /GET CHAR AGAIN
0 /TYPE CHAR
NL0
>/END OF IFZERO FTDC02F
JMS SCHK17 /SEE IF XMT FLAG IS UP
JMP SCHK29 /YES THAT IS TOO FAST
SCHK12, JMS SCHK17 /SEE IF LINE HAS XMT INTERRUPTED YET
JMP SCHK20 /IT HAS
JMS SCHK19 /GET CHAR FROM TTY IF ANY
JMP SCHK13 /NONE
SNA /IS IT A NULL ?
ISZ CHK5 /FLAG LINE IS RUNNING OPEN
TAD (-207
SNA CLA /IS TTY IN LOOP BACK MODE ?
JMP SCHK26 /YES SO TELL OPERATOR
SCHK13, JMS SCHK98 /HAVE WE WAITED TOO LONG ?
JMP SCHK12 /NO KEEP WAITING
JMS SCHK28 /GIVE TTY ID
JMS INLTYP
"N;"O;" ;"X;"M;"T;" ;"F;"L;"A;4000+"G
JMP SCHK22
SCHK20, JMS SCHK19 /SEE IF THERE IS ANY TYPEIN
JMP SCHK21 /NONE
SNA /IS IT NULL
ISZ CHK5 /YES
TAD (-207
SNA CLA /IS TTY IN LOOPBACK MODE ?
JMP SCHK26 /YES SO TELL OPERATOR
SCHK21, JMS SCHK98 /CHECK CLOCK
JMP SCHK20 / KEEP WAITING TO TEST FOR LOOP BACK MODE
SCHK22, NL0
JMS SCHK17 /CLEAR XMT FLAG IF UP
NOP
TAD CHK5 /IS LINE RUNNING OPEN ?
SNA CLA
JMP SCHK23 /NOT RUNNING OPEN
JMS SCHK28 /TYPE TTY LINE #
TAD (ERR23-1
JMS INITYP
SCHK23, ISZ CHK1 /ADVANCE TO NEXT TTY #
TAD CHK1 /GET NEW LINE #
TAD (-TTYN
SZA CLA /HAVE WE DONE ALL OF THE LINES ?
JMP SCHK11 /GO DO NEXT TTY LINE
JMP SCHK30
IFNZRO FTDC02F <
/HERE TO SEE IF A LINE HAS XMT INTERRUPTED
/ CALL JMS SCHK17
/ RETURN IF HAS XMT INTERRUPTED
/ NORMAL RETURN
SCHK17, 0
NL0
TAD I CHK2 /SELECT FOR THIS LINE & GROUP
AND (0017 /SELECT GROUP ONLY
DCMTPF /GET TRANSMIT FLAGS
AND I CHK2 /AND LEAVE ONLY FLAG FOR OUR LINE
SZA CLA /HAS IT COME UP YET
JMP .+3 /YES SO CLEAR FLAG THEN RETURN
ISZ SCHK17 /YES SO SKIP RETURN
JMP I SCHK17
DCMTCF /CLEAR FLAG
JMP I SCHK17
/HERE TO GET A CHAR FROM A TTY KEYBOARD
/ CALL JMS SCHK19
/ RETURN /IF NONE
/ RETURN WITH CHAR IN AC
SCHK19, 0
TAD I CHK2
AND (0017 /SELECT GROUP ONLY
DCMTKF /GET KEYBOARD FLAGS
AND I CHK2
SNA CLA /DOES KEYBOARD HAVE FLAG UP ?
JMP I SCHK19 /NO SO RETURN
TAD (0017 /SELECT ALL GROUPS, NO LINES
DCMTON
NL0
TAD I CHK2 /GET SELECT FOR THIS LINE
DCMTON
NL0
DCMKRS DCMKCC /GET CHAR
ISZ SCHK19 /SKIP RETURN
JMP I SCHK19
>/END OF IFNZRO FTDC02F
IFZERO FTDC02F <
/HERE TO SEE IF TTY HAS XMT INTERRUPTED
SCHK17, 0
TAD I CHK2 /GET THE TLS INSTRUCTION
TAD (-5 /MAKES A TSF INSTRUCTION
DCA .+1
0
ISZ SCHK17 /NORMAL(I.E. SKIP) RETURN
JMP I SCHK17
/HERE TO GET A CHAR FROM A TTY
SCHK19, 0
TAD CHK1 /GET LINE NUMBER
CLL RTL /MULTIPLY BY 4
TAD (INTTTY
DCA CHK3
CDFINS
TAD I CHK3 /GET KSF
CDFCNK
DCA .+1
7402
JMP I SCHK19 /NO CHAR SO RETURN
ISZ SCHK19 /SKIP RETURN
TAD .-3 /PICK UP KSF AGAIN
DCA .+5 /SAVE FOR TEST AFTER KRB
TAD .+4 /GET KSF AGAIN
TAD (0005 /MAKES A KRB
DCA .+1
7402 /PUT KRB HERE
7402 /PUT KSF HERE
JMP I SCHK19
>/END OF IFZERO FTDC02F
PAGE
IFNZRO FTDC02F <
SCHK25, JMS INBTYP /TYPE A CR/LF/%
JMS INLTYP
"D;"C;"0;"2;"F;" ;"I;"S;" ;"N;"O;"T;" ;"P;"R;"E;"S;"E;"N;4000+"T
CDFINS /CHANGE DATA FIELD TO GET INSTRUCTION FIELD
IFDEF DC1MSK < DCA I (DC1MSK > /MAKE MASK ZERO SO DON'T USE DC02F
IFDEF DC2MSK < DCA I (DC2MSK >
IFDEF DC3MSK < DCA I (DC3MSK >
IFDEF DC4MSK < DCA I (DC4MSK >
CDFCNK /CHANGE BACK TO NORMAL DATA FIELD
JMP SCHK30 /THEN CHECK SYN STUFF
>/END OF IFNZRO FTDC02F
/HERE WHEN TTY IS APPARENTLY IN LOOP BACK MODE
SCHK26, JMS SCHK28 /TYPE TTYP#
JMS INLTYP
"I;"S;" ;"I;"N;" ;"L;"O;"O;"P;"B;"A;"C;"K;" ;"M;"O;"D;4000+"E
JMS SCHK27 /TRY TO FLUSH TTY ENABLE
JMP SCHK23 /WE ARE DONE WITH THIS LINE
/HERE TO FLUSH TTY FROM INTERRUPTING IF IT IS BAD
SCHK27, 0
NL0
TAD CHK1 /GET LINE NUMBER
IFNZRO FTDC02F <
RTR
RAR
AND (0007 /LEAVE GROUP ONLY
TAD (DC1MSK
DCA CHK3
TAD I CHK2 /GET MASK FOR LINE
AND (7760 /LEAVE LINE SELECT BITS ONLY
CMA /MAKE A MASK FOR DC1MSK(ETC)
CDFINS
AND I CHK3 /STRIP ENABLE BIT FROM DC1MSK(ETC)
DCA I CHK3
CDFCNK
>/END OF IFNZRO FTDC02F
IFZERO FTDC02F <
CLL RTL /MULTIPLY BY 4
TAD (INTTTY+3
DCA CHK3
CDFINS
DCA I CHK3 /CLEAR DDB ADR IN KSF CHAIN
CDFCNK
>/END OF IFZERO FTDC02F
JMP I SCHK27
/HERE TO TYPE TTY IDENTIFICATION
SCHK28, 0
JMS INBTYP /TYPE A CR/LF/%
JMS INLTYP
"T;"T;4000+"Y
TAD CHK1 /GET LINE NUMBER
JMS INIOCT /TYPE OCTAL NUMBER
JMS INLTYP
4240 /SPACE
JMP I SCHK28
SCHK29, JMS SCHK28 /TYPE TTY NAME
JMS INLTYP
"X;"M;"T;4240
JMS SCHK93 /TYPE "FLAG WON'T CLEAR"
HLT
JMP SCHK10 /REDO SYSCHK FOR TTY'S
SCHK24, JMS SCHK28 /TYPE TTY ID
JMS INLTYP
"R;"C;"V;4240
JMS SCHK93 /TYPE "FLAG WON'T CLEAR
HLT
JMP SCHK10 /TRY AGAIN IF HE INSISTS
ERR23, "I;"S;" ;"R;"U;"N;"N;"I;"N;"G;" ;"O;"P;"E;4000+"N
PAGE
>/END OF IFNZRO TTYN
LISTOG TTYN
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** SYSCHK FOR SYNCHRONOUS INTERFACE - XMT ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/HERE TO CHECK SYNCHRONOUS INTERFACE
/ CHK6 IS A FLAG FOR XMT TEST
/ CHK5 IS A FLAG FOR ANY CHAR RECEIVED
/ CHK4 IS A FLAG FOR NONSYNCH RECEIVED TEST
CHKDPT=200 /TIME FOR SYNCHRONOUS INTERFACE TO COME ALIVE
/ APP 2 SECONDS
SKP
HLT
SCHK30, CDFCNK /SET RIGHT DATA FIELD
JMS SCHKA1 /INITIALIZE BUFFERS
NLM1
DCA CHK6 /FLAG 1ST TIME THROUGH XMT TEST
IFNZRO FTDP01 < NLM1 ; DCA CHKST1 > / DITTO
IFZERO FTDP01 <
TAD (0020
DCA CHKST1 /INITIAL STS1
TAD (5400
DCA CHKST2 /INITIAL STS2
>/END IFZERO FTDP01
IFZERO FTDP01 <
CDFINS
TAD (F10TCH-1 /POINTER TO TEST CHARS
DCA AUTO1
DCA I AUTO1
DCA I AUTO1
DCA I AUTO1
TAD (SYN
DCA I AUTO1
CDFCNK
>/END OF IFZERO FTDP01
SCHK31, NLM1
DCA CHK5 /FLAG FIRST TIME THROUGH BASIC REC TEST
NLM1
DCA CHK4
SCHK32,
IFNZRO FTDP01 <
DPSTR /SET TERMINAL READY
DPCEF /CLEAR END FLAG
TAD (SYN
DPTAC DPCTF /START BY SENDING ONE SYNCH
NOP
NL0
>/END OF IFNZRO FTDP01
IFZERO FTDP01 <
DPSCSI /CLEAR SYNCHRONOUS INTERFACE
TAD (5400 /TERMINAL READY; INTERFACE ENABLE; TRANS REQ
DPSLCC /SET INITIAL CONDITIONS
NL0
Z=CNKFLD^1100
TAD (Z
DPSLFL
NL0
>/END OF IFZERO FTDP01
CDFINS
TAD (SYNBUF-1
DCA I (T10CA /SET UP BUFFER TO SEND SYNCHS
TAD (-4
DCA I (T10WC /SET UP WC TO SEND SYNCHS
DCA I (T10NCA /SEND SYNCH'S WHEN DONE
CDFCNK
DCA CHOCNT /NO CHARS SEND YET
TAD (-SYNBUF-3
DCA T10LCA
IFZERO FTDP01 < DPSGTT > /ENABLE DP8E TRANSMITTER
JMS SCHK77 /ENABLE RECEIVER
TAD (-CHKDPT
DCA INISEC /TIME FOR INTERFACE TO COME ALIVE
SCHK33,
IFNZRO FTDP01 <
DPSSR /SKIP ON DATASET READY
JMP SCHK35 /NOT READY SO WAIT
>/END OF IFNZRO FTDP01
IFZERO FTDP01 <
Z=CNKFLD^40
DPSRS1 /GET RECEIVE FIELD SELECT
AND (0340
TAD (-Z
SZA /IS IT OK ?
JMS SCHK39
DPSRS2 /GET TRANSMIT FIELD SELECT
AND (0340
TAD (-Z
SZA /IS IT OK ?
JMS SCHK39
DPSRS1 /GET STATUS 1
AND (0020 /MASK FOR MODEM READY
SNA CLA
JMP SCHK35
DPSRS2
AND (5400 /MASK FOR TERMINAL READY,CARRIER, &CLEAR TO SEND
TAD (-5400
SZA CLA
JMP SCHK35 /WAIT A WHILE
>/END OF IFZERO FTDP01
JMS SCHK75
NOP
NL0 /CHECK RECEIVER
JMS SCHK66 /SERVICE TRANSMITTER
TAD CHOCNT
TAD (40 /SEE HOW MANY CHARS SENT
SPA CLA
JMP SCHK40 /BRANCH IF XMTTER GOING
SCHK35, JMS SCHK98 /SEE IF CLOCK HAS TIMED OUT
JMP SCHK33 /NOT YET
/HERE IF TIMER GOES OFF WHILE TRYING TO INITIALIZE DP01 OR DP8E
NL0
IFNZRO FTDP01 <
DPSSR
JMP SCHK36 /BRANCH IF DATASET NOT READY
NLM1
DCA CHKST1 /REENABLE SCHK36
JMP SCHK37
SCHK36, NLM1
DCA CHK6 /REENABLE SCHK37
ISZ CHKST1
JMP SCHK31 /IF HAVE ALREADY COMPLAINED DONE
JMS INBTYP /TYPE CR/LF/%
JMS INDTYP /TYPE DP01
JMS INLTYP
"D;"A;"T;"A;"S;"E;"T;" ;"N;"O;"T;" ;"R;"E;"A;"D;4000+"Y
JMP SCHK31 /KEEP TRYING
CHKST1, 0 /COUNTED WHEN MODEM NOT READY
>/END OF IFNZRO FTDP01
IFZERO FTDP01 <
DPSRS1
AND (0020
NEGATE /GET MODEM READY BIT
TAD CHKST1
SZA CLA
JMP SCHK36 /IF STATUS CHANGED DISPLAY IT
DPSRS2
AND (5400
NEGATE /GET STS2 BITS
TAD CHKST2
SZA CLA
JMP SCHK36
TAD CHKST1
SNA CLA
JMP SCHK31 /KEEP ONWAITING
TAD CHKST2
TAD (-5400 /CHECK OTHER STS WORD
SZA CLA
JMP SCHK31
JMP SCHK37
PAGE
SCHK36, NLM1
DCA CHK6 /ENABLE SCHK37
DPSRS1
AND (0020
DCA CHKST1 /GET 1ST STATUS
DPSRS2
AND (5400
DCA CHKST2 /GET 2ND STATUS
TAD CHKST1
SZA CLA
JMP SCHKX1
JMS INBTYP /TYPE A CR/LF/%
JMS INDTYP /TYPE DP8E OR DP01
JMS INLTYP
"M;"O;"D;"E;"M;" ;"N;"O;"T;" ;"R;"E;"A;"D;4000+"Y
SCHKX1, NL4000
AND CHKST2 /MASK FOR CARRIER
SZA CLA
JMP SCHKX2
JMS INBTYP /TYPE A CR/LF/%
JMS INDTYP /TYPE DP8E OR DP01
JMS INLTYP
"N;"O;" ;"C;"A;"R;"R;"I;"E;4000+"R
SCHKX2, TAD (1000
AND CHKST2 /MASK FOR TERMINAL READY
SZA CLA
JMP SCHKX3
JMS INBTYP /TYPE A CR/LF/%
JMS INDTYP /TYPE DP8E OR DP01
JMS INLTYP
"T;"E;"R;"M;" ;"N;"O;"T;" ;"R;"E;"A;"D;4000+"Y
SCHKX3, TAD (0400
AND CHKST2 /MASK FOR CLEAR TO SEND
SZA CLA
JMP SCHKX4
JMS INBTYP /TYPE A CR/LF/%
JMS INDTYP /TYPE DP8E OR DP01
JMS INLTYP
"N;"O;"T;" ;"C;"L;"E;"A;"R;" ;"T;"O;" ;"S;"E;"N;4000+"D
SCHKX4, JMP SCHK31 /KEEP TRYING
CHKST1, 0
CHKST2, 0
>/END OF IFZERO FTDP01
SCHK37, ISZ CHK6 /HAVE WE COMPLAINED ONCE ALREADY ?
JMP SCHK31 /YES SO JUST KEEP TRYING
JMS INBTYP /TYPE A CR/LF/%
JMS INDTYP /TYPE DP8E OR DP01
JMS INLTYP
"X;"M;"T;" ;"N;"O;"T;" ;"R;"E;"A;"D;4000+"Y
JMP SCHK31
PAGE
LISTOG FTDP8E
IFZERO FTDP01 <
/HERE BECAUSE WC OR CA DOESN'T LOOK RIGHT AT END OF XMISSION
0 /PUT AC HERE WHEN CALLED
SCHK38, 0
CDFCNK
DCA SCHK38-1 /SAVE AC CONTENTS
JMS INFTYP /TYPE CR/LF/?
JMS INDTYP /TYPE DP8E OR DP01
JMS INLTYP
"W;"C;" ;"O;"R;" ;"C;"A;" ;"W;"R;"O;"N;4000+"G
JMP SCHK30-1 /TRY ALL OVER AGAIN IF HE CONTINUES
/HERE BECAUSE FIELD SELECT FAILED
SCHK39, 0
DCA CHK3
JMS INFTYP /TYPE CR/LF/?
JMS INDTYP /TYPE DP8E OR DP01
JMS INLTYP
"F;"I;"E;"L;"D;" ;"S;"E;"L;"E;"C;"T;" ;"F;"A;"I;"L;"E;4000+"D
TAD CHK3 /GET BAD VALUE-CNKFLD
TAD (CNKFLD /LEAVES ONLY BAD VALUE
JMS INIOCT /TYPE IT
TAD (257 /ASCII /
JMS INITY8
NL0
TAD (CNKFLD /GET RIGHT VALUE
JMS INIOCT /AND TYPE IT
JMP SCHK30-1 /TRY ALL OVER AGAIN IF HE INSISTS
/HERE WHEN SPECIAL CHAR DETECT FAILS
SCHK57, 0
JMS INFTYP /TYPE CR/LF/?
JMS INDTYP /TYPE DP8E OR DP01
JMS INLTYP
"C;"H;"A;"R;" ;"D;"E;"T;"E;"C;"T;" ;"S;"K;"I;"P;" ;"F;"A;"I;"L;"E;4000+"D
JMP SCHK30-1 /TRY AGAIN IF HE INSISTS
SCHK55, JMS INFTYP /TYPE CR/LF/?
JMS INDTYP /TYPE DP8E OR DP01
JMS INLTYP
"R;"E;"A;"D;" ;"C;"H;"A;"R;" ;"D;"E;"T;"E;"C;"T;"E;"D;4240
TAD CHK1
JMS INIOCT
NL0
JMS INLTYP
" ;"R;"I;"G;"H;"T;4000+"=
NL3
JMS INIOCT
JMP SCHK30-1 /TRY AGAIN IF HE INSISTS
PAGE
>/END OF IFZERO FTDP01
LISTOG FTDP8E
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** SYSCHK FOR SYNCHRONOUS INTERFACE - RECEIVE ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/HERE TO SEE WHAT WE ARE RECEIVING
/ BE SURE STUFF IS ALSO GOING OUT(TO EXECISE LOOPBACK, CROSSTALK, ETC.)
SCHK40, NLM1
DCA CHK6 /FLAG 1ST TIME THROUGH XMT TEST
TAD (-CHKDPT
DCA INISEC /TIME TO COME ALIVE
SCHK42, JMS SCHK66 /CHECK SYNCHRONOUS TRANSMITTER
JMS SCHK75 /GET NEXT CHAR FROM RECEIVER
JMP SCHK45 /NONE FOR A WHILE
DCA RCVQUE /SAVE CHAR
NLM1
DCA CHK5 /FLAG FOR BASIC REC TEST
TAD RCVQUE
TAD (-SYN
SZA CLA /WAS CHAR A SYNC ?
JMP SCHK44 /NO SO COMPLAIN
IFZERO FTDP01 <
DPSSCD /SKIP ON SPECIAL CHAR DETECT
JMS SCHK57 /SHOULD HAVE SKIPPED
DPSSCD /SKIP ABOVE SHOULD HAVE CLEARED FLAG
SKP CLA
JMS SCHK57 /IT DIDN'T SO COMPLAIN
DPSRCD /GET SPECIAL CHAR INDEX
DCA CHK1
NLM3 /SHOULD BE 3
TAD CHK1
SZA CLA
JMP SCHK55 /IT WASN'T ?
>/END OF IFZERO FTDP01
JMP SCHK50 /YES SO ON TO NEXT TEST
SCHK44, TAD RCVQUE
NEGATE
TAD CHK4
SNA CLA /HAVE WE DISPLAYED THIS ONE ALREADY ?
JMP SCHK32 /YES SO DON'T SHOW AGAIN
TAD RCVQUE
DCA CHK4
JMS INBTYP /TYPE CR/LF/%
JMS INDTYP /TYPE DP8E OR DP01
JMS INLTYP
"R;"C;"V;"';"D;4000+"
TAD RCVQUE
JMS INIOCT
JMP SCHK32 /LOOP ON ERROR
SCHK45, JMS SCHK98 /CHECK CLOCK
JMP SCHK42 /KEEP WAITING
NLM1
DCA CHK4 /FLAG TO DISPLAY ANY RECEIVED CHAR
ISZ CHK5
JMP SCHK32 /DON'T COMPLAIN EVERY TIME
JMS INBTYP /TYPE A CR/LF/%
JMS INDTYP /TYPE DP8E OR DP01
JMS INLTYP
"N;"O;"T;" ;"R;"E;"C;"E;"I;"V;"I;"N;4000+"G
JMP SCHK32
/**DEBUG PAGE
/HERE TO CHECK SYNCHRONOUS TRANSMITTER
/ IF T10WC HAS EXPIRED USE T10NWC&T10NCA TO REFRESH IT
/ ELSE SEND SYNCH'S
SCHK66, 0
IFNZRO FTDP01 <
DPSTF
SKP CLA
JMP I SCHK66 /CHECK FOR XMT FLAG
CDFINS
ISZ I (T10CA
TAD I (T10CA
DCA CHK1 /GET CURRENT ADDRESS
CDFCNK
TAD I CHK1
DPTAC DPCTF
NOP /SEND NEXT CHAR
NL0
DPSTF
JMS SCHK56 /CHECK FLAG CLEARED
CDFINS
ISZ I (T10WC
JMP SCHK69 /CHECK FOR OVERFLOW
>/END OF IFNZRO FTDP01
IFZERO FTDP01 <
DPSSTO
JMP I SCHK66 /CHECK DP8E FOR WC OVERFLOW
DPSSTO
SKP CLA
JMS SCHK56 /BE SURE FLAG CLEARED
CDFINS
TAD I (T10CA
TAD T10LCA /CHECK CA
SZA
JMS SCHK38 /BE SURE IT IS KOSHER
TAD I (T10WC
SZA
JMS SCHK38 /CHECK WC ALSO
>/END OF IFZERO FTDP01
TAD I (T10NCA
SNA
JMP SCHK67
DCA I (T10CA
DCA I (T10NCA
TAD I (T10NWC
DCA I (T10WC
JMP SCHK68
SCHK67, TAD (SYNBUF-1
DCA I (T10CA /NO MSG SO SEND SYNCS
NLM1
DCA I (T10WC
SCHK68, TAD I (T10WC
TAD CHOCNT
DCA CHOCNT
IFZERO FTDP01 <
TAD I (T10CA
NEGATE
TAD I (T10WC
DCA T10LCA
DPSGTT
>/END OF IFZERO FTDP01
SCHK69, CDFCNK
JMP I SCHK66 /RETURN
CHOCNT, 0
T10LCA, 0 /EXPECTED T10CA WHEN DONE
PAGE
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** CHECK TO SEE IF SYN LINK IS LOOPED BACK ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
SCHK50, TAD (-CHKDPT
DCA INISEC /TIME TO HEAR LOOPBACK
SCHK51, TAD (SCHKRD
DCA CHK2 /POINTER TO WATCH RECEIVE
SCHK52, CDFINS
TAD (SCHKRD-5
DCA I (T10NCA /SET UP JUNK TO GO
TAD (-7
DCA I (T10NWC /WC FOR JUNK
CDFCNK
JMS SCHK66 /SERVICE TRANSMITTER
JMS SCHK75 /TRY TO GET ANOTHER CHAR FROM THE SYN RECEIVER
JMP SCHK54 /NOT READY YET
NEGATE
TAD I CHK2
SZA CLA /IS THIS ONE OF JUNK CHARS ?
JMP SCHK51 /NO
ISZ CHK2 /ADVANCE STATE
TAD CHK2
TAD (-SCHKRD-3
SZA CLA
JMP SCHK54 /STILL NOT FATAL
IFNZRO FTLBACK <JMP SCHK60 > /MODEM IS IN LOOPBACK MODE
SCHK53, JMS INFTYP /TYPE CR/LF/?
JMS INDTYP /TYPE DP8E OR DP01
JMS INLTYP
"I;"S
IFNZRO FTLBACK < " ;"N;"O;"T >
" ;"I;"N;" ;"L;"O;"O;"P;"B;"A;"C;"K;" ;"M;"O;"D;4000+"E
JMP SCHK30-1 /RECHECK ALL SYNCHRONOUS STUFF
SCHK54, JMS SCHK98
JMP SCHK52 /CHECK CLOCK
IFNZRO FTLBACK < JMP SCHK53 > /MUST BE FOR LOOPBACK TEST
SCHK60, TAD HERTZF
TAD (-36
DCA INISEC /HALF SECOND
DCA CHOCNT /SO WE CAN COUNT CHARS
JMS SCHK75 /CHECK RECEIVER
JMS SCHK66 /SERVICE TRANSMITER
NL0
JMS SCHK98
JMP .-4
IFZERO FTDP01 <
TAD CHOCNT
TAD (207
SPA CLA
JMP SCHK61
CDFINS
TAD (NOP
DCA INTN21
CDFCNK
SCHK61,
>/END OF IFZERO FTDP01
TAD CHOCNT
TAD (1200 /COMPARE TO 640.
SPA CLA
DCA SCHK62
JMP SCHK70
/JUNK CHARACTERS TO SEND TO 10
/ NOTE THAT ONLY BITS USED ARE BITS WE KNOW DP01/DP8E CAN SEE
SYN ; SYN ; SYN ; SYN
SCHKRD, 206; 202; 220
/JMS HERE IF CAN'T CLEAR FLAG ON DP01 OR DP8E
SCHK56, 0
JMS INFTYP /TYPE CR/LF/?
JMS INDTYP /TYPE DP8E OR DP01
JMS SCHK93 /TYPE FLAG WON'T CLEAR
JMP SCHK30-1 /TRY AGAIN
PAGE
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** CHECK TO BE SURE 10 ANSWERS ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
/HERE TO SEND A START(REP) MESSAGE TO 10 AND AWAIT A STACK(RACK)
SCHK70, TAD (-CHKDPT
DCA INISEC /TIME TO GET A STACK(RACK)
/SEND START MSG
CDFINS
TAD (-10-NUMSYN
DCA I (T10NWC
TAD (SYNBUF-1
DCA I (T10NCA
CDFCNK
SCHK71, TAD (JMP I SCHK73+1
DCA SCHK73
SCHK72, JMS SCHK66 /CHECK TRANSMITTER
JMS SCHK75
JMP SCHK74 /GET NEXT CHAR FROM RECEIVER
SCHK73, 7402 /WILL BE A JMP I SCHK73+#
CHKENQ; CHKSTK; CHKFLL
SCHK62
SCHK62, JMP SCHK80
JMS INBTYP
JMS INDTYP
JMS INLTYP
"G;"T;" ;"9;"6;"0;"0;" ;"B;"A;"U;4000+"D
JMP SCHK80
SCHK74, JMS SCHK98
JMP SCHK72 /CHECK CLOCK
JMS INBTYP /TYPE CR/LF/%
JMS INLTYP
"N;"O;" ;"R;"E;"S;"P;"O;"N;"S;"E;" ;"T;"O
" ;"S;"T;"A;"R;4000+"T
JMP SCHK30 /KEEP TRYING
CHKSTK, TAD (ENQ-STACK
CHKENQ, TAD (-ENQ
CHKFIL, SZA CLA
JMP SCHK71
ISZ SCHK73
JMP SCHK74
CHKFLL, AND (077 /STRIP SELECT AND QSYNC BITS
JMP CHKFIL
PAGE
/HERE TO ACCUMULATE A CRC IN CHK6 & CHK7
SCHK78, 0
DCA CHK1
TAD (-10
DCA CHK2
TAD CHK6
CLL RAR
DCA CHK6
SZL
TAD (0400
TAD CHK7
CLL RAR
DCA CHK7
SZL
JMS SCHKCC
TAD CHK1
CLL RAR
DCA CHK1
SZL
JMS SCHKCC
ISZ CHK2
JMP SCHK78+4
JMP I SCHK78
SCHKCC, 0
TAD CHK7
CLL RAR
CML
RAL
DCA CHK7
TAD CHK6
AND (240
CMA IAC
CLL RAL
TAD CHK6
TAD (240
DCA CHK6
JMP I SCHKCC
/HERE TO GET THE NEXT CHAR FROM THE SYNCHRONOUS RECEIVER
/ CALL JMS SCHK75
/ RETURN /IF NOTHING HAPPENING
/ RETURN WITH RECEIVED CHAR IN AC
SCHK75, 0
IFNZRO FTDP01 < /CODE FOR DP01
DPSRF
SKP
JMP I SCHK75 /CHECK RECEIVE FLAG
DPRRB /GET CHAR
DPSRF
JMS SCHK56 /BE SURE WE CLEARED FLAG
>/END OF IFNZRO FTDP01
IFZERO FTDP01 < /CODE FOR DP8E
DPSSRO
JMP I SCHK75 /CHECK FOR FLAG
DPSSRO
SKP
JMS SCHK56 /FLAG IS SUPPOSED TO HAVE CLEARED
CDFINS
TAD I (F10WC /CHECK TO BE SURE HDW MEANT IT
SZA
JMS SCHK38 /COMPLAIN WC ISN'T RIGHT
TAD I (F10CA
TAD (-RCVQUE
SZA
JMS SCHK38
JMS SCHK76 /REENABLE RECEIVER
TAD RCVQUE /GET CHAR
>/END OF IFZERO FTDP01
ISZ SCHK75
JMP I SCHK75 /SKIP RETURN WITH CHAR
IFZERO FTDP01 <
/HERE TO ENABLE DP8E RECEIVER
SCHK76, 0
CDFINS
NLM1
DCA I (F10WC /RESET RECEIVE WC
TAD (RCVQUE-1
DCA I (F10CA
CDFCNK /RESET RECEIVE CA
DPSGRR /REENABLE RECEIVER
JMP I SCHK76
>/END OF IFZERO FTDP01
/HERE TO INITIALIZE THE SYNCHRONOUS RECEIVER
/ CALL JMS SCHK77
/ RETURN
SCHK77, 0
IFNZRO FTDP01 < DPCRA > /CLEAR RECEIVE ACTIVE
IFZERO FTDP01 <
DPSCSD /CLEAR SYNC DETECT
JMS SCHK76 /RESET WC & CA
>/END OF IFZERO FTDP01
JMP I SCHK77
/ SUBROUTINE TO BUILD BEGINNING OF OUTPUT BUFFERS
SCHKA1, 0
TAD (SYNCHS-1
DCA CHAUTO
TAD (-20 /16
DCA CHK6
SCHKA2, TAD (SYN
DCA I CHAUTO
ISZ CHK6
JMP SCHKA2
TAD (STARTC-1 /BEGINNING OF CONTROL
DCA CHAUTO
TAD (CTLBUF-1 /WHERE IT HAS TO GO
DCA CHAUTO-1
TAD (-10-6 /BOTH CTL AND 1ST DATA BUFFER
JMS CHCOPY /COPY IT
TAD (STARTD-1
DCA CHAUTO
TAD (T10BF2-1
DCA CHAUTO-1
TAD (-6
JMS CHCOPY
TAD (T10LST-1
DCA CHAUTO-1
TAD (STARTD-1
DCA CHAUTO
TAD (-6
JMS CHCOPY
JMP I SCHKA1
CHCOPY, 0
DCA CHK6
CHCOPL, TAD I CHAUTO
DCA I CHAUTO-1
ISZ CHK6
JMP CHCOPL
JMP I CHCOPY
PAGE
SCHK80,
XISTOG PDP8E
IFZERO PDP8E <
/ ***********************************************************
/ ***********************************************************
/ *** ***
/ *** CHECK KG8E IS OK ***
/ *** ***
/ ***********************************************************
/ ***********************************************************
CDFCNK /SET RIGHT DATA FIELD
NL0 /CLEAR AC
TAD (0100 /MASK TO SET 16-BIT CRC+BCC
BCCLCL /LOAD CONTROL REGISTER
BCCCLR /CLEAR CRC ACCUMLUATION
NL0 /CLEAR AC
DCA CHK6 /CLEAR CRC ACCUMULATION
DCA CHK7 / DITTO
DCA CHK5 /FIRST CHAR TO ADD TO MESSAGE
SCHK81, TAD CHK5 /GET NEXT CHAR TO COMPUTE CRC ON
JMS SCHK78 /GO CALCULATE CRC
TAD CHK5 /GET CHARACTER
BCCGEN /MAKE KG8E COMPUTE CRC ALSO
CLA /CLEAR OUT AC
BCCRDH /GET HIGH ORDER PART OF CRC
NEGATE
TAD CHK6
SZA CLA /CHECK FOR CALCULATION OK SO FAR
JMP SCHK83 /NO GO
BCCRDL /GET LOW ORDER PART OF CRC
NEGATE
TAD CHK7 /ADD CALCULATED VALUE
SZA CLA
JMP SCHK83 /LOST ON LOW ORDER CHAR
ISZ CHK5
TAD CHK5
AND (0400 /MASK FOR OVERFLOW
SNA CLA /HAVE WE DONE ALL 256 POSSIBLE CHARS ?
JMP SCHK81 /NOT YET
/HERE BECAUSE DC72 HAS A WORKING KG8E
CDFINS /POINT TO INSTRUCTION FIELD
TAD (BCCGEN /CHANGE CRCALC TO USE KG8E
DCA I (CRCALC+1
TAD (DCA TEMP1
DCA I (CRCALC+2
TAD (BCCRDL
DCA I (CRCALC+3
TAD (DCA CRC2
DCA I (CRCALC+4
TAD (BCCRDH
DCA I (CRCALC+5
TAD (DCA CRC1
DCA I (CRCALC+6
TAD I (CRCRET
DCA I (CRCALC+7
TAD (BCCCLR /CHANGE DCA CRC TO BCCCLR
DCA I (CRCXI1
TAD (BCCCLR
DCA I (CRCXI2
TAD (BCCCLR
DCA I (CRCXI3
TAD (BCCCLR
DCA I (CRCXI4
TAD (BCCCLR
DCA I (CRCXI5
TAD (FIRCNK-1000 /CHANGE START OF CHUNKS (DON'T NEED BCC TABLE)
DCA I (FIRADR
JMP SCHK90
/HERE BECAUSE KG8E NOT INSTALLED OR NOT WORKING
SCHK83, JMS INBTYP /TYPE CR/LF/%/%
JMS INLTYP
"K;"G;"8;"E;" ;"N;"O;"T;" ;"W;"O;"R;"K;"I;"N;4000+"G
JMP SCHK90
PAGE
>/END OF IFZERO PDP8E
XISTOG PDP8E
/HERE TO SEE IF LINE PRINTER IS LS8E(CENTRONICS) OR LE8(LP02)
SCHK90, CDFCNK /RESET NORMAL DATA FIELD
LISTOG LPTN
IFNZRO LPTN <
LPTCLF /CLEAR LPT FLAG
LPTSKF /IS FLAG STILL UP ?
JMP SCHK92 /NO SO OK
SCHK91, JMS INFTYP /TYPE CR/LF/?
JMS INLTYP
"L;"P;"T;4240
JMS SCHK93 /TYPE FLAG WON'T CLEAR
HLT
JMP SCHK90 /TRY AGAIN IF HE CONTINUES
SCHK92, LPTSTF /SET THE FLAG IF THIS IS AN LS8E
LPTSKF /SKIP ON FLAG
JMP SCHK96 /THIS IS AN LE8=LP08
/CENTRONICS PRINTER SO ADJUST TIMEOUTS
LPTCLF
LPTSKF
SKP /GOOD - WE CLEARED FLAG
JMP SCHK91 /FATAL - CAN'T CLEAR FLAG
CDFINS /WE ARE CHANGING DATA IN FIRST FIELD
TAD (LPTSIE /USE THIS TO CLEAR INTERRUPT ENABLE
DCA I (LPXXCE /SET IN LPTFIN
TAD (NOP
DCA I (LPXXSE
TAD (NOP
DCA I (LPXYSE
TAD (-200 /TWO SECONDS ON A FORM FEED
DCA I (LPTTFF
TAD (-100 /ONE SECOND ON RANDOM CHAR
DCA I (LPTTCH
CDFCNK /BACK TO NORMAL DATA FIELD
>/END OF IFNZRO LPTN
LISTOG LPTN
SCHK96,
TAD (377 /START WITH THE LAST ENTRY IN THE TABLE
DCA CHK3
DCA CHK6 /CLEAR HALF OF CRC
DCA CHK7 /CLEAR REST OF CRC
TAD CHK3 /GET CHAR TO MAKE CRC FOR
JMS SCHK78 /GO COMPUTE THE CRC FOR IT
TAD CHK3
TAD (CRCTAB
DCA CHK1
TAD CHK7
DCA I CHK1
TAD CHK1
TAD (400
DCA CHK1
TAD CHK6
DCA I CHK1
NLM1
TAD CHK3
SMA /HAVE WE FILLED THE TABLE ?
JMP SCHK96+1 /NOT YET SO KEEP ON
NL0
JMP SCHK94
SCHK93, 0
JMS INLTYP
"F;"L;"A;"G;" ;"W;"O;"N;"';"T;" ;"C;"L;"E;"A;4000+"R
JMP I SCHK93
PAGE
/HERE WHEN DONE CHECKING SYSTEM
SCHK94, CDFINS
NL0
TAD (F10TCH-1 /ADDRESS OF TEST CHAR TABLE
DCA AUTO1
/FILL OUT THE SPECIAL CHAR TABLE
TAD (SOH /START OF A NUMBERED MESSAGE
DCA I AUTO1
TAD (ENQ
DCA I AUTO1
TAD (ENQ
DCA I AUTO1 /PAD OUT TABLE
TAD (ENQ
DCA I AUTO1 /PAD OUT TABLE
/HERE TO BUILD NODE ID MESSAGE
CDFCNK /POINT TO DATA FIELD
DCA CHK6 /INITIALIZE THE CRC CALCULATION
DCA CHK7
TAD (NCLNID /ADDRESS OF MESSAGE
DCA AUTO1 /SET UP AUTO INDEX REGISTER
DCA I (NCLNID /CLEAR COUNTER
NL6 /NCL-NODE-ID MSG TYPE IS 6
JMS SCHK95 /PUT INTO MSG
JMS SCHK95 /FIELD FOR #
JMS SCHK95 /FIELD FOR #
Z=OURNNM&177 /ONLY 7 BITS
TAD (Z /OUR NODE NUMBER
JMS SCHK95 /PUT INTO NODE ID MSG
TAD (OURID /POINTER TO NAME FIELD
DCA CHK3 /SAVE POINTER
SCHKNI, TAD CHK3
IAC
DCA CHK1
TAD I CHK1
AND (200
SNA CLA
JMP SCHKSI /PUT SOFTWARE ID IN NOW
TAD I CHK3 /GET NEXT CHAR
AND (177 /STRIP EXTRA BITS
TAD (200 /FLAG FOR EXTENSIBLE FIELD
JMS SCHK95 /PUT INTO THE MESSAGE
ISZ CHK3 /ADVANCE CHAR POINTER
JMP SCHKNI /AND BACK FOR MORE
SCHKSI, TAD I CHK3 /GET LAST CHAR OF NAME
AND (177 /STRIP EXTRA BITS
JMS SCHK95 /AND PUT INTO NODEID
TAD (SID-1 /POINT TO SOFTWARE ID
DCA CHAUTO /SAVE ADDRESS OF COUNT
TAD I CHAUTO /GET COUNT (NEG NO OF CHARACTERS)
DCA CHK3 /STORE FOR LOOP CONTROL
SCHSID, TAD I CHAUTO /GET NEXT CHARACTER
JMS SCHK95 /PUT CHARACTER INTO MESSAGE
ISZ CHK3 /TEST IF LAST
JMP SCHSID /ELSE GO BACK FOR MORE
TAD CHK7 /GET HALF OF BCC
DCA I AUTO1 /PUT AFTER MSG
TAD CHK6 /GET REST OF BCC
DCA I AUTO1 /PUT AFTER MSG ALSO
JMP SCHK97
SCHK95, 0
DCA CHK1 /HOLD CHAR A SEC
TAD CHK1 / GET IT AGAIN
DCA I AUTO1 /PUT NEXT CHAR INTO THE MESSAGE
TAD CHK1 /GET CHAR AGAIN
JMS SCHK78 /INCLUDE IN BCC
ISZ I (NCLNID /COUNT CHAR
JMP I SCHK95
SCHK97,
CDFINS
NL0 /DEFENSIVE CODE
DCA I (INICIF /CHANGE CIFCNK TO AND 0
IFZERO PDP8E <TAD (CAF> /MAKE INTO CLEAR ALL FLAGS ON PDP8E
DCA I (INIJMP /CHANGE JMP I (SYSCHK TO 0
CDFCNK /SET NORMAL CHUNK FIELD
CIFINS /SET NORMAL INSTRUCTION FIELD
JMP I (INIJMP /RETURN TO INITIALIZATION
/HERE TO SEE IF CLOCK HAS TIMED OUT
/ CALL JMS SCHK98
/ RETURN /IF INISEC HAS NOT TIMED OUT
/ RETURN /IF INISEC WENT TO ZERO
SCHK98, 0
NL0
CLKSCF /SKIP ON CLOCK FLAG
JMP I SCHK98 /HASN'T TICKED
IFZERO PDP8E < /BECAUSE 8E CLOCKS TICK TWICE AS FAST
ISZ INISEC+1 / COUNT INISEC+1 EVERY TICK
NOP / AND INISEC ON EVERY OTHER TICK
NL1
AND INISEC+1
SNA CLA
JMP I SCHK98
>/END OF IFZERO PDP8E
ISZ INISEC /CLOCK HAS TICKED - DID TIMER EXPIRE ?
JMP I SCHK98 /NO SO JUSTRETURN
ISZ SCHK98 /YES SO SKIP RETURN
JMP I SCHK98
/TIMERS FOR SYSCHK CODE
INISEC, 0
0
SID, 0 /LENGTH (MINUS)
SIDTXT
SIDEND,
*SID
ZZ=SID+1-SIDEND
ZZ
PAGE
/HERE TO TYPE A MESSAGE WHILE IN THE SYSCHK CODE
/ CALL JMS INITYP /WITH MSG ADR-1 IN AC
/ RETURN /AFTER MSG IS TYPED
INITYP, 0
DCA AUTO1 /SAVE MSG ADR IN AUTOINDEX REGISTER
INITY1, TAD I AUTO1 /GET NEXT CHAR FROM MSG
JMS INITY8
SMA CLA /IS MESSAGE FINISHED ?
JMP INITY1
JMP I INITYP
INITY8, 0
DCA INICHR /SAVE CHAR TO TYPE
TAD INICHR
AND (0177 /STRIP PARITY
TAD (-40
SPA CLA /IS CHAR A CR/LF(MAYBE) ?
DCA INIFLG /YES SO TURN OFF ^O IF IT WAS ON
TAD INIFLG /GET CONTROL O FLAG
SZA CLA /IF IT IS ON DON'T TYPE CHAR
JMP INITY9 /IT WAS ON
TAD INICHR
CTYTLS
CTYTSF
JMP .-1
CTYTCF /CLEAR FLAG
CTYKSF /SKIP ON KEYBOARD FLAG
JMP INITY9
CTYKRB /GET CHAR
NLM1
DCA INIFLG
INITY9, NL0
TAD INICHR /GET CHAR AGAIN
JMP I INITY8
INIFLG, 0 /SET NONZERO IF USER TYPES IN WHILE SYSCHK IS TYPING OUT
/ WILL FLUSH TTY OUTPUT TO NEXT CR/LF
INICHR, 0 /CHAR TO TYPE
INITMP, 0 /LOCATION TO GO INDIRECT ON TO GET PARITY FOR CHAR
INIOCT, 0
DCA CHK3
TAD CHK3
AND (7000
SZA CLA
JMP INIOC4 /PRINT ALL FOUR DIGITS
TAD CHK3
AND (0700
SZA CLA
JMP INIOC3 /PRINT THREE DIGITS ONLY
TAD CHK3
AND (0070
SZA CLA
JMP INIOC2 /PRINT TWO DIGITS ONLY
JMP INIOC1 /ONLY ONE DIGIT
INIOC4, TAD CHK3
RTL
RTL
JMS INITYO
INIOC3, TAD CHK3
RTR
RTR
RTR
JMS INITYO
INIOC2, TAD CHK3
RTR
RAR
JMS INITYO
INIOC1, TAD CHK3
JMS INITYO
JMP I INIOCT
INITYO, 0
AND (0007
TAD (0060 /CONVERT TO OCTAL
JMS INITY8 /TYPE CHAR
NL0
JMP I INITYO
/ROUTINE TO TYPE INLINE MESSAGE
INLTYP, 0
NL0
INLTY2, TAD I INLTYP
JMS INITY8
ISZ INLTYP /TYPE NEXT CHAR
SMA CLA
JMP INLTY2
JMP I INLTYP
/HERE TO TYPE CR/LF??
INFTYP, 0
JMS INLTYP
FATMSG
4207 /FINAL BELL
JMP I INFTYP
/HERE TO TYPE CR/LF/%
INBTYP, 0
JMS INLTYP
215;215;215;12;207;207;"%;4000+"%
JMP I INBTYP
/HERE TO TYPE DP8E OR DP01
INDTYP, 0
JMS INLTYP
IFNZRO FTDP01 < "D;"P;"0;"1;4240 >
IFZERO FTDP01 < "D;"P;"8;"E;4240 >
JMP I INDTYP
FIELD 0
*DC72 /STARTING ADDRESS FOR LOADER
$