Source Code
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These source-code files derive from a printout of Luminary 116 (the Apollo 12
Lunar Module guidance computer program), from the personal library of
original AGC developer Don Eyles, digitally photographed at archive.org,
financially sponsored by Ron Burkey, and transcribed to source code by a
team of volunteers. This colorized, syntax-highlighted form was created
by assembling that transcribed source code. Note that the full page images
are available on the
Virtual AGC project page at archive.org, while reduced-size images
are presented at the VirtualAGC project website. Report or fix any
transcription errors at
the Virtual AGC project code repository. Notations on the program listing read, in part: GAP: ASSEMBLE REVISION 116 OF AGC PROGRAM LUMINARY BY NASA 2021112-071 19:09 AUG. 11,1969Note that the date is the date of the printout, not the date of the program revision. |
058192,000002: ## Copyright: Public domain.
058193,000003: ## Filename: ALARM_AND_ABORT.agc
058194,000004: ## Purpose: A section of Luminary revision 116.
058195,000005: ## It is part of the source code for the Lunar Module's (LM)
058196,000006: ## Apollo Guidance Computer (AGC) for Apollo 12.
058197,000007: ## This file is intended to be a faithful transcription, except
058198,000008: ## that the code format has been changed to conform to the
058199,000009: ## requirements of the yaYUL assembler rather than the
058200,000010: ## original YUL assembler.
058201,000011: ## Reference: pp. 1371-1375
058202,000012: ## Assembler: yaYUL
058203,000013: ## Contact: Ron Burkey <info@sandroid.org>.
058204,000014: ## Website: www.ibiblio.org/apollo/index.html
058205,000015: ## Mod history: 2017-01-22 MAS Created from Luminary 99.
058206,000016: ## 2017-02-03 RRB Updated for Luminary 116.
058207,000017: ## 2017-03-01 HG Fix Page number
058208,000018: ## Fix operand : -> L
058209,000019: ## operator LXCH -> TS
058210,000020: ## 2017-03-10 RSB Proofed comment text via 3-way diff vs
058211,000021: ## Luminary 99 and 132 ... no problems found.
058212,000022:
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Page 1371 |
058214,000024: # THE FOLLOWING SUBROUTINE MAY BE CALLED TO DISPLAY A NON-ABORTIVE ALARM CONDITION. IT MAY BE CALLED
058215,000025: # EITHER IN INTERRUPT OR UNDER EXECUTIVE CONTROL.
058216,000026:
058217,000027: # CALLING SEQUENCE IS AS FOLLOWS:
058218,000028: # TC ALARM
058219,000029: # OCT AAANN ALARM NO. NN IN GENERAL AREA AAA.
058220,000030: # (RETURNS HERE)
058221,000031:
058222,000032: 5567 BLOCK 02
058223,000033: 4000 SETLOC FFTAG7
058224,000034: 4000 BANK
058225,000035:
058226,000036: 5567 0375 EBANK= FAILREG
058227,000037:
058228,000038: 5567 COUNT* $$/ALARM
058229,000039: # ALARM TURNS ON THE PROGRAM ALARM LIGHT, BUT DOES NOT DISPLAY.
058230,000040:
058231,000041: 5567 00004 ALARM INHINT
058232,000042:
058233,000043: 5570 30002 CA Q
058234,000044: 5571 55363 ALARM2 TS ALMCADR
058235,000045: 5572 50002 INDEX Q
058236,000046: 5573 30000 CA 0
058237,000047: 5574 54001 BORTENT TS L
058238,000048:
058239,000049: 5575 30006 PRIOENT CA BBANK
058240,000050: 5576 00006 +1 EXTEND
058241,000051: 5577 04007 ROR SUPERBNK # ADD SUPER BITS.
058242,000052: 5600 55364 TS ALMCADR +1
058243,000053:
058244,000054: 5601 30002 LARMENT CA Q # STORE RETURN FOR ALARM
058245,000055: 5602 54061 TS ITEMP1
058246,000056:
058247,000057: 5603 10375 CHKFAIL1 CCS FAILREG # IS ANYTHING IN FAILREG
058248,000058: 5604 15610 TCF CHKFAIL2 # YES TRY NEXT REG
058249,000059: 5605 30001 CA L
058250,000060: 5606 54375 TS FAILREG
058251,000061: 5607 15614 TCF PROGLARM # TURN ALARM LIGHT ON FOR FIRST ALARM
058252,000062:
058253,000063: 5610 10376 CHKFAIL2 CCS FAILREG +1
058254,000064: 5611 15614 TCF PROGLARM
058255,000065: 5612 30001 CA L
058256,000066: 5613 54376 TS FAILREG +1
058257,000067:
058258,000068:
058259,000069: 5614 22377 PROGLARM LXCH FAILREG +2 # STORE AS "MOST RECENT" ALARM CODE
058260,000070:
058261,000071: 5615 41035 CS DSPTAB +11D # TURN ON PROGRAM ALARM IF OFF
058262,000072: 5616 75632 MASK OCT40400
058263,000073: 5617 27035 ADS DSPTAB +11D
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Page 1372 |
058265,000075:
058266,000076: 5620 56061 MULTEXIT XCH ITEMP1 # OBTAIN RETURN ADDRESS IN A
058267,000077: 5621 00003 RELINT
058268,000078: 5622 50000 INDEX A
058269,000079: 5623 00001 TC 1
058270,000080:
058271,000081: # PRIOLARM DISPLAYS V05N09 VIA PRIODSPR WITH 3 RETURNS TO THE USER FROM THE ASTRONAUT AT CALL LOC +1,+2,+3 AND
058272,000082: # AN IMMEDIATE RETURN TO THE USER AT CALL LOC +4. EXAMPLE FOLLOWS,
058273,000083: # CAF OCTXX ALARM CODE
058274,000084: # TC BANKCALL
058275,000085: # CADR PRIOLARM
058276,000086:
058277,000087: # ... ...
058278,000088: # ... ...
058279,000089: # ... ... ASTRONAUT RETURN
058280,000090: # TC PHASCHNG IMMEDIATE RETURN TO USER. RESTART
058281,000091: # OCT X.1 PHASE CHANGE FOR PRIO DISPLAY
058282,000092:
058283,000093: 10,3563 BANK 10
058284,000094: 10,2000 SETLOC DISPLAYS
058285,000095: 10,2000 BANK
058286,000096:
058287,000097: 10,3563 COUNT* $$/DSPLA
058288,000098: 10,3563 00004 PRIOLARM INHINT # * * * KEEP IN DISPLAY ROUTINES BANK
058289,000099: 10,3564 54001 TS L # SAVE ALARM CODE
058290,000100:
058291,000101: 10,3565 30133 CA BUF2 # 2 CADR OF PRIOLARM USER
058292,000102: 10,3566 55363 TS ALMCADR
058293,000103: 10,3567 30134 CA BUF2 +1
058294,000104: 10,3570 05576 TC PRIOENT +1 # * LEAVE L ALONE
058295,000105: 10,3571 77467 -2SEC DEC -200 B-14 # *** DONT MOVE
058296,000106: 10,3572 35006 CAF V05N09
058297,000107: 10,3573 12505 TCF PRIODSPR
058298,000108:
058299,000109: 5624 BLOCK 02
058300,000110: 4000 SETLOC FFTAG7
058301,000111: 4000 BANK
058302,000112:
058303,000113: 5624 COUNT* $$/ALARM
058304,000114: 5624 00004 BAILOUT INHINT
058305,000115: 5625 30002 CA Q
058306,000116: 5626 55363 TS ALMCADR
058307,000117:
058308,000118: 5627 50002 INDEX Q
058309,000119: 5630 30000 CAF 0
058310,000120: 5631 05574 TC BORTENT
058311,000121: 5632 40400 OCT40400 OCT 40400
058312,000122:
058313,000123: 5633 00004 INHINT
058314,000124: 5634 34752 WHIMPER CA TWO
058315,000125: 5635 60005 AD Z
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Page 1373 |
058317,000127: 5636 54017 TS BRUPT
058318,000128: 5637 50017 RESUME
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The command RESUME is circled in red ink - RRB 2017 |
058320,000130: 5640 04635 TC POSTJUMP # RESUME SENDS CONTROL HERE
058321,000131: 5641 12763 CADR ENEMA
058322,000132: 5642 00004 POODOO INHINT
058323,000133: 5643 30002 CA Q
058324,000134: 5644 55363 ABORT2 TS ALMCADR
058325,000135: 5645 50002 INDEX Q
058326,000136: 5646 30000 CAF 0
058327,000137: 5647 05574 TC BORTENT
058328,000138: 5650 77770 OCT77770 OCT 77770 # DON'T MOVE
058329,000139:
058330,000140: 5651 34765 CAF OCT35 # 4.35SPOT FOR GOPOODOO
058331,000141: 5652 54001 TS L
058332,000142: 5653 40000 COM
058333,000143: 5654 52760 DXCH -PHASE4
058334,000144: 5655 00004 GOPOODOO INHINT
058335,000145: 5656 04616 TC BANKCALL # RESET STATEFLG, REINTFLG, AND NODOFLAG.
058336,000146: 5657 27750 CADR FLAGS
058337,000147: 5660 30103 CA FLAGWRD7 # IS SERVICER CURRENTLY IN OPERATION?
058338,000148: 5661 74746 MASK V37FLBIT
058339,000149: 5662 10000 CCS A
058340,000150: 5663 15671 TCF STRTIDLE
058341,000151: 5664 04616 TC BANKCALL # TERMINATE GRPS 1, 3, 5, AND 6
058342,000152: 5665 12650 CADR V37KLEAN
058343,000153: 5666 04616 TC BANKCALL # TERMINATE GRPS 2, 4, 1, 3, 5, AND 6
058344,000154: 5667 12641 CADR MR.KLEAN # (I.E., GRP 4 LAST)
058345,000155: 5670 15634 TCF WHIMPER
058346,000156: 5671 35733 STRTIDLE CAF BBSERVDL
058347,000157: 5672 04727 TC SUPERSW
058348,000158: 5673 04616 TC BANKCALL # PUT SERVICER INTO ITS "GROUND" STATE
058349,000159: 5674 57321 CADR SERVIDLE # AND PROCEED TO GOTOPOOH.
058350,000160: 5675 00004 CCSHOLE INHINT
058351,000161: 5676 30002 CA Q
058352,000162: 5677 05644 TC ABORT2
058353,000163: 5700 21103 OCT21103 OCT 21103
058354,000164: 5701 00004 CURTAINS INHINT
058355,000165: 5702 30002 CA Q
058356,000166: 5703 05571 TC ALARM2
058357,000167: 5704 00217 OCT217 OCT 00217
058358,000168: 5705 01363 TC ALMCADR # RETURN TO USER
058359,000169:
058360,000170: 5706 00004 BAILOUT1 INHINT
058361,000171: 5707 53364 DXCH ALMCADR
058362,000172: 5710 35732 CAF ADR40400
058363,000173: 5711 54061 BOTHABRT TS ITEMP1
058364,000174: 5712 50002 INDEX Q
058365,000175: 5713 30000 CAF 0
058366,000176: 5714 54001 TS L
058367,000177: 5715 15603 TCF CHKFAIL1
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Page 1374 |
058369,000179: 5716 00004 POODOO1 INHINT
058370,000180: 5717 53364 DXCH ALMCADR
058371,000181: 5720 35731 CAF ADR77770
058372,000182: 5721 15711 TCF BOTHABRT
058373,000183:
058374,000184: 5722 00004 ALARM1 INHINT
058375,000185: 5723 53364 DXCH ALMCADR
058376,000186: 5724 00004 ALMNCADR INHINT
058377,000187: 5725 50002 INDEX Q
058378,000188: 5726 30000 CA 0
058379,000189: 5727 54001 TS L
058380,000190: 5730 15601 TCF LARMENT
058381,000191:
058382,000192: 5731 15650 ADR77770 TCF OCT77770
058383,000193: 5732 15632 ADR40400 TCF OCT40400
058384,000194: 5733 5155 DOALARM EQUALS ENDOFJOB
058385,000195: 5733 E7,1515 EBANK= DVCNTR
058386,000196: 5733 56067 BBSERVDL BBCON SERVIDLE
058387,000197: # CALLING SEQUENCE FOR VARALARM
058388,000198:
058389,000199: # CAF (ALARM)
058390,000200: # TC VARALARM
058391,000201:
058392,000202: # VARALARM TURNS ON PROGRAM ALARM LIGHT BUT DOES NOT DISPLAY
058393,000203:
058394,000204: 5734 00004 VARALARM INHINT
058395,000205:
058396,000206: 5735 54001 TS L # SAVE USERS ALARM CODE
058397,000207:
058398,000208: 5736 30002 CA Q # SAVE USERS Q
058399,000209: 5737 55363 TS ALMCADR
058400,000210:
058401,000211: 5740 05575 TC PRIOENT
058402,000212: 5741 00014 OCT14 OCT 14 # DONT MOVE
058403,000213:
058404,000214: 5742 01363 TC ALMCADR # RETURN TO USER
058405,000215:
058406,000216: 5743 5634 ABORT EQUALS WHIMPER
058407,000217: 13,3750 BANK 13
058408,000218: 13,2000 SETLOC ABTFLGS
058409,000219: 13,2000 BANK
058410,000220: 13,3750 COUNT* $$/ALARM
058411,000221:
058412,000222: 13,3750 44747 FLAGS CS STATEBIT
058413,000223: 13,3751 70077 MASK FLAGWRD3
058414,000224: 13,3752 54077 TS FLAGWRD3
058415,000225: 13,3753 44745 CS REINTBIT
058416,000226: 13,3754 70106 MASK FLGWRD10
058417,000227: 13,3755 54106 TS FLGWRD10
058418,000228: 13,3756 44753 CS NODOBIT
058419,000229: 13,3757 70076 MASK FLAGWRD2
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Page 1375 |
058421,000231: 13,3760 54076 TS FLAGWRD2
058422,000232: 13,3761 00002 TC Q
058423,000233:
End of include-file ALARM_AND_ABORT.agc. Parent file is MAIN.agc