Source Code
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These source-code files are part of a reconstructed copy of Luminary 97, the
second release of the Apollo 11 Lunar Module (LM) Apollo Guidance Computer
(AGC) software. It was created to fix two incorrect ephemeris constants in
Luminary 96, as described by anomaly report LNY-59.
The reconstruction began with source code of Luminary 99 revision 1 previously
transcribed from a digitized copy of that program. The code was then updated
by undoing changes described in original Luminary memos 83 and 85, using asterisks
indicating changed lines in the listing as a guide. The reconstruction was
verified by matching memory-bank checksums to those listed in drawing 2021152D.
Note that page numbers in the reconstructed code match those on the Luminary 099
revision 001 printout, although the added code would likely have changed page
numbers for a real Luminary 97 listing.
Comments from the original source code are prefixed with a single '#' symbol,
whereas comments added later are prefixed by "##" or "###". Report any errors
noted by creating an
issue report at the Virtual AGC
project's GitHub repository.
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058194,000002: ## Copyright: Public domain.
058195,000003: ## Filename: ALARM_AND_ABORT.agc
058196,000004: ## Purpose: A section of Luminary revision 97.
058197,000005: ## It is part of the reconstructed source code for the
058198,000006: ## second release of the flight software for the Lunar
058199,000007: ## Module's (LM) Apollo Guidance Computer (AGC) for Apollo 11.
058200,000008: ## It was created to fix two incorrect ephemeris constants in
058201,000009: ## Luminary 96, as described by anomaly report LNY-59.
058202,000010: ## The code has been recreated from a copy of Luminary 99
058203,000011: ## revision 001, using asterisks indicating changed lines in
058204,000012: ## the listing and Luminary Memos #83 and #85, which list
058205,000013: ## changes between Luminary 97 and 98, and 98 and 99. The
058206,000014: ## code has been adapted such that the resulting bugger words
058207,000015: ## exactly match those specified for Luminary 97 in NASA drawing
058208,000016: ## 2021152D, which gives relatively high confidence that the
058209,000017: ## reconstruction is correct.
058210,000018: ## Reference: pp. 1381-1385
058211,000019: ## Assembler: yaYUL
058212,000020: ## Contact: Ron Burkey <info@sandroid.org>.
058213,000021: ## Website: www.ibiblio.org/apollo/index.html
058214,000022: ## Mod history: 2019-07-28 MAS Created from Luminary 99.
058215,000023: ## 2021-05-30 ABS OCT21103 -> OCT1103
058216,000024:
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Page 1381
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058218,000026: # THE FOLLOWING SUBROUTINE MAY BE CALLED TO DISPLAY A NON-ABORTIVE ALARM CONDITION. IT MAY BE CALLED
058219,000027: # EITHER IN INTERRUPT OR UNDER EXECUTIVE CONTROL.
058220,000028:
058221,000029: # CALLING SEQUENCE IS AS FOLLOWS:
058222,000030: # TC ALARM
058223,000031: # OCT AAANN ALARM NO. NN IN GENERAL AREA AAA.
058224,000032: # (RETURNS HERE)
058225,000033:
058226,000034: 5567 BLOCK 02
058227,000035: 4000 SETLOC FFTAG7
058228,000036: 4000 BANK
058229,000037:
058230,000038: 5567 0375 EBANK= FAILREG
058231,000039:
058232,000040: 5567 COUNT* $$/ALARM
058233,000041:
058234,000042: # ALARM TURNS ON THE PROGRAM ALARM LIGHT, BUT DOES NOT DISPLAY.
058235,000043:
058236,000044: 5567 00004 ALARM INHINT
058237,000045:
058238,000046: 5570 30002 CA Q
058239,000047: 5571 55363 ALARM2 TS ALMCADR
058240,000048: 5572 50002 INDEX Q
058241,000049: 5573 30000 CA 0
058242,000050: 5574 54001 BORTENT TS L
058243,000051:
058244,000052: 5575 30006 PRIOENT CA BBANK
058245,000053: 5576 00006 +1 EXTEND
058246,000054: 5577 04007 ROR SUPERBNK # ADD SUPER BITS.
058247,000055: 5600 55364 TS ALMCADR +1
058248,000056:
058249,000057: 5601 30002 LARMENT CA Q # STORE RETURN FOR ALARM
058250,000058: 5602 54061 TS ITEMP1
058251,000059:
058252,000060: 5603 10375 CHKFAIL1 CCS FAILREG # IS ANYTHING IN FAILREG
058253,000061: 5604 15607 TCF CHKFAIL2 # YES TRY NEXT REG
058254,000062: 5605 22375 LXCH FAILREG
058255,000063: 5606 15621 TCF PROGLARM # TURN ALARM LIGHT ON FOR FIRST ALARM
058256,000064:
058257,000065: 5607 10376 CHKFAIL2 CCS FAILREG +1
058258,000066: 5610 15613 TCF FAIL3
058259,000067: 5611 22376 LXCH FAILREG +1
058260,000068: 5612 15624 TCF MULTEXIT
058261,000069:
058262,000070: 5613 30377 FAIL3 CA FAILREG +2
058263,000071: 5614 74733 MASK POSMAX
058264,000072: 5615 10000 CCS A
058265,000073: 5616 15630 TCF MULTFAIL
058266,000074: 5617 22377 LXCH FAILREG +2
058267,000075: 5620 15624 TCF MULTEXIT
058268,000076:
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Page 1382
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058270,000078:
058271,000079: 5621 41036 PROGLARM CS DSPTAB +11D
058272,000080: 5622 75642 MASK OCT40400
058273,000081: 5623 27036 ADS DSPTAB +11D
058274,000082:
058275,000083:
058276,000084: 5624 56061 MULTEXIT XCH ITEMP1 # OBTAIN RETURN ADDRESS IN A
058277,000085: 5625 00003 RELINT
058278,000086: 5626 50000 INDEX A
058279,000087: 5627 00001 TC 1
058280,000088:
058281,000089: 5630 30001 MULTFAIL CA L
058282,000090: 5631 64735 AD BIT15
058283,000091: 5632 54377 TS FAILREG +2
058284,000092:
058285,000093: 5633 15624 TCF MULTEXIT
058286,000094:
058287,000095: # PRIOLARM DISPLAYS V05N09 VIA PRIODSPR WITH 3 RETURNS TO THE USER FROM THE ASTRONAUT AT CALL LOC +1,+2,+3 AND
058288,000096: # AN IMMEDIATE RETURN TO THE USER AT CALL LOC +4. EXAMPLE FOLLOWS,
058289,000097: # CAF OCTXX ALARM CODE
058290,000098: # TC BANKCALL
058291,000099: # CADR PRIOLARM
058292,000100: # ... ...
058293,000101: # ... ...
058294,000102: # ... ... ASTRONAUT RETURN
058295,000103: # TC PHASCHNG IMMEDIATE RETURN TO USER. RESTART
058296,000104: # OCT X.1 PHASE CHANGE FOR PRIO DISPLAY
058297,000105:
058298,000106: 10,3562 BANK 10
058299,000107: 10,2000 SETLOC DISPLAYS
058300,000108: 10,2000 BANK
058301,000109:
058302,000110: 10,3562 COUNT* $$/DSPLA
058303,000111: 10,3562 00004 PRIOLARM INHINT # * * * KEEP IN DISPLAY ROUTINES BANK
058304,000112: 10,3563 54001 TS L # SAVE ALARM CODE
058305,000113:
058306,000114: 10,3564 30133 CA BUF2 # 2 CADR OF PRIOLARM USER
058307,000115: 10,3565 55363 TS ALMCADR
058308,000116: 10,3566 30134 CA BUF2 +1
058309,000117: 10,3567 05576 TC PRIOENT +1 # * LEAVE L ALONE
058310,000118: 10,3570 77467 -2SEC DEC -200 B-14 # *** DONT MOVE
058311,000119: 10,3571 35006 CAF V05N09
058312,000120: 10,3572 12504 TCF PRIODSPR
058313,000121:
058314,000122: 5634 BLOCK 02
058315,000123: 4000 SETLOC FFTAG7
058316,000124: 4000 BANK
058317,000125:
058318,000126: 5634 COUNT* $$/ALARM
058319,000127: 5634 00004 BAILOUT INHINT
058320,000128: 5635 30002 CA Q
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Page 1383
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058322,000130: 5636 55363 TS ALMCADR
058323,000131:
058324,000132: 5637 50002 INDEX Q
058325,000133: 5640 30000 CAF 0
058326,000134: 5641 05574 TC BORTENT
058327,000135: 5642 40400 OCT40400 OCT 40400
058328,000136:
058329,000137: 5643 00004 INHINT
058330,000138: 5644 34752 WHIMPER CA TWO
058331,000139: 5645 60005 AD Z
058332,000140: 5646 54017 TS BRUPT
058333,000141: 5647 50017 RESUME
058334,000142: 5650 04635 TC POSTJUMP # RESUME SENDS CONTROL HERE
058335,000143: 5651 12765 CADR ENEMA
058336,000144: 5652 00004 POODOO INHINT
058337,000145: 5653 30002 CA Q
058338,000146: 5654 55363 ABORT2 TS ALMCADR
058339,000147: 5655 50002 INDEX Q
058340,000148: 5656 30000 CAF 0
058341,000149: 5657 05574 TC BORTENT
058342,000150: 5660 77770 OCT77770 OCT 77770 # DON'T MOVE
058343,000151:
058344,000152: 5661 34765 CAF OCT35 # 4.35SPOT FOR GOPOODOO
058345,000153: 5662 54001 TS L
058346,000154: 5663 40000 COM
058347,000155: 5664 52761 DXCH -PHASE4
058348,000156: 5665 00004 GOPOODOO INHINT
058349,000157: 5666 04616 TC BANKCALL # RESET STATEFLG, REINTFLG, AND NODOFLAG.
058350,000158: 5667 27755 CADR FLAGS
058351,000159: 5670 30103 CA FLAGWRD7 # IS SERVICER CURRENTLY IN OPERATION?
058352,000160: 5671 74746 MASK V37FLBIT
058353,000161: 5672 10000 CCS A
058354,000162: 5673 15701 TCF STRTIDLE
058355,000163: 5674 04616 TC BANKCALL # TERMINATE GRPS 1, 3, 5, AND 6
058356,000164: 5675 12652 CADR V37KLEAN
058357,000165: 5676 04616 TC BANKCALL # TERMINATE GRPS 2, 4, 1, 3, 5, AND 6
058358,000166: 5677 12643 CADR MR.KLEAN # (I.E., GRP 4 LAST)
058359,000167: 5700 15644 TCF WHIMPER
058360,000168: 5701 35743 STRTIDLE CAF BBSERVDL
058361,000169: 5702 04727 TC SUPERSW
058362,000170: 5703 04616 TC BANKCALL # PUT SERVICER INTO ITS "GROUND" STATE
058363,000171: 5704 57321 CADR SERVIDLE # AND PROCEED TO GOTOPOOH.
058364,000172: 5705 00004 CCSHOLE INHINT
058365,000173: 5706 30002 CA Q
058366,000174: 5707 05654 TC ABORT2
058367,000175: 5710 01103 OCT1103 OCT 1103
058368,000176: 5711 00004 CURTAINS INHINT
058369,000177: 5712 30002 CA Q
058370,000178: 5713 05571 TC ALARM2
058371,000179: 5714 00217 OCT217 OCT 00217
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Page 1384
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058373,000181: 5715 01363 TC ALMCADR # RETURN TO USER
058374,000182:
058375,000183: 5716 00004 BAILOUT1 INHINT
058376,000184: 5717 53364 DXCH ALMCADR
058377,000185: 5720 35742 CAF ADR40400
058378,000186: 5721 54061 BOTHABRT TS ITEMP1
058379,000187: 5722 50002 INDEX Q
058380,000188: 5723 30000 CAF 0
058381,000189: 5724 54001 TS L
058382,000190: 5725 15603 TCF CHKFAIL1
058383,000191: 5726 00004 POODOO1 INHINT
058384,000192: 5727 53364 DXCH ALMCADR
058385,000193: 5730 35741 CAF ADR77770
058386,000194: 5731 15721 TCF BOTHABRT
058387,000195:
058388,000196: 5732 00004 ALARM1 INHINT
058389,000197: 5733 53364 DXCH ALMCADR
058390,000198: 5734 00004 ALMNCADR INHINT
058391,000199: 5735 50002 INDEX Q
058392,000200: 5736 30000 CA 0
058393,000201: 5737 54001 TS L
058394,000202: 5740 15601 TCF LARMENT
058395,000203:
058396,000204: 5741 15660 ADR77770 TCF OCT77770
058397,000205: 5742 15642 ADR40400 TCF OCT40400
058398,000206: 5743 5155 DOALARM EQUALS ENDOFJOB
058399,000207: 5743 E7,1515 EBANK= DVCNTR
058400,000208: 5743 56067 BBSERVDL BBCON SERVIDLE
058401,000209:
058402,000210: # CALLING SEQUENCE FOR VARALARM
058403,000211: # CAF (ALARM)
058404,000212: # TC VARALARM
058405,000213:
058406,000214: # VARALARM TURNS ON PROGRAM ALARM LIGHT BUT DOES NOT DISPLAY
058407,000215:
058408,000216: 5744 00004 VARALARM INHINT
058409,000217:
058410,000218: 5745 54001 TS L # SAVE USERS ALARM CODE
058411,000219:
058412,000220: 5746 30002 CA Q # SAVE USERS Q
058413,000221: 5747 55363 TS ALMCADR
058414,000222:
058415,000223: 5750 05575 TC PRIOENT
058416,000224: 5751 00014 OCT14 OCT 14 # DONT MOVE
058417,000225:
058418,000226: 5752 01363 TC ALMCADR # RETURN TO USER
058419,000227:
058420,000228: 5753 5644 ABORT EQUALS WHIMPER
058421,000229: 13,3755 BANK 13
058422,000230: 13,2000 SETLOC ABTFLGS
058423,000231: 13,2000 BANK
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Page 1385
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058425,000233: 13,3755 COUNT* $$/ALARM
058426,000234:
058427,000235: 13,3755 44747 FLAGS CS STATEBIT
058428,000236: 13,3756 70077 MASK FLAGWRD3
058429,000237: 13,3757 54077 TS FLAGWRD3
058430,000238: 13,3760 44745 CS REINTBIT
058431,000239: 13,3761 70106 MASK FLGWRD10
058432,000240: 13,3762 54106 TS FLGWRD10
058433,000241: 13,3763 44753 CS NODOBIT
058434,000242: 13,3764 70076 MASK FLAGWRD2
058435,000243: 13,3765 54076 TS FLAGWRD2
058436,000244: 13,3766 00002 TC Q
058437,000245:
End of include-file ALARM_AND_ABORT.agc. Parent file is MAIN.agc