Source Code
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These source-code files are part of a reconstructed copy of Luminary 96, the
original release of the Apollo 11 Lunar Module (LM) Apollo Guidance Computer
(AGC) software.
The reconstruction began with reconstructed source code for Luminary 97. Changes
between revisions 96 and 97 were backed out, as described by anomal report LNY-59.
transcribed from a digitized copy of that program. 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 96 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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057660,000002: ## Copyright: Public domain.
057661,000003: ## Filename: SERVICE_ROUTINES.agc
057662,000004: ## Purpose: A section of Luminary revision 96.
057663,000005: ## It is part of the reconstructed source code for the
057664,000006: ## original release of the flight software for the Lunar
057665,000007: ## Module's (LM) Apollo Guidance Computer (AGC) for Apollo 11.
057666,000008: ## The code has been recreated from a previously reconstructed
057667,000009: ## copy of Luminary 97 by undoing changes described in anomaly
057668,000010: ## report LNY-59. The code has been adapted such that the
057669,000011: ## resulting bugger words exactly match those specified for
057670,000012: ## Luminary 96 in NASA drawing 2021152D, which gives relatively
057671,000013: ## high confidence that the reconstruction is correct.
057672,000014: ## Reference: pp. 1374-1380
057673,000015: ## Assembler: yaYUL
057674,000016: ## Contact: Ron Burkey <info@sandroid.org>.
057675,000017: ## Website: www.ibiblio.org/apollo/index.html
057676,000018: ## Mod history: 2019-08-04 MAS Created from Luminary 97.
057677,000019:
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Page 1374
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057679,000021: 10,3544 BANK 10
057680,000022: 10,2000 SETLOC DISPLAYS
057681,000023: 10,2000 BANK
057682,000024: 10,3544 COUNT* $$/DSPLA
057683,000025:
057684,000026: 10,3544 00004 UPENT2 INHINT
057685,000027: 10,3545 75660 MASK OCT77770
057686,000028: 10,3546 54001 TS L
057687,000029: 10,3547 40100 CS FLAGWRD4
057688,000030: 10,3550 70001 MASK L
057689,000031: 10,3551 26100 ADS FLAGWRD4
057690,000032: 10,3552 00003 JOIN RELINT
057691,000033: 10,3553 16737 TCF Q+1
057692,000034:
057693,000035: 10,3554 00004 DOWNENT2 INHINT
057694,000036: 10,3555 75660 MASK OCT77770
057695,000037: 10,3556 40000 COM
057696,000038: 10,3557 70100 MASK FLAGWRD4
057697,000039: 10,3560 54100 TS FLAGWRD4
057698,000040: 10,3561 13552 TCF JOIN
057699,000041:
057700,000042: 10,3562 4757 OCT7 EQUALS SEVEN
057701,000043:
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Page 1375
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057703,000045: # UPFLAG AND DOWNFLAG ARE ENTIRELY GENERAL FLAG SETTING AND CLEARING SUBROUTINES. USING THEM, WHETHER OR
057704,000046: # NOT IN INTERRUPT, ONE MAY SET OR CLEAR ANY SINGLE, NAMED BIT IN ANY ERASABLE REGISTER, SUBJECT OF COURSE TO
057705,000047: # EBANK SETTING. A "NAMED" BIT, AS THE WORD IS USED HERE, IS ANY BIT WITH A NAME FORMALLY ASSIGNED BY THE YUL
057706,000048: # ASSEMBLER.
057707,000049:
057708,000050: # AT PRESENT THE ONLY NAMED BITS ARE THOSE IN THE FLAGWORDS. ASSEMBLER CHANGES WILL MAKE IT POSSIBLE TO
057709,000051: # NAME ANY BIT IN ERASABLE MEMORY.
057710,000052:
057711,000053: # CALLING SEQUENCES ARE AS FOLLOWS :-
057712,000054: # TC UPFLAG TC DOWNFLAG
057713,000055: # ADRES NAME OF FLAG ADRES NAME OF FLAG
057714,000056:
057715,000057: # RETURN IS TO THE LOCATION FOLLOWING THE "ADRES" ABOUT .58 MS AFTER THE "TC".
057716,000058: # UPON RETURN A CONTAINS THE CURRENT FLAGWRD SETTING.
057717,000059:
057718,000060: 5504 BLOCK 02
057719,000061: 4000 SETLOC FFTAG1
057720,000062: 4000 BANK
057721,000063: 5504 COUNT* $$/FLAG
057722,000064:
057723,000065: 5504 30002 UPFLAG CA Q
057724,000066: 5505 05522 TC DEBIT
057725,000067: 5506 40000 COM # +(15 - BIT)
057726,000068: 5507 00006 EXTEND
057727,000069: 5510 04001 ROR LCHAN # SET BIT
057728,000070: 5511 50061 COMFLAG INDEX ITEMP1
057729,000071: 5512 54074 TS FLAGWRD0
057730,000072: 5513 22063 LXCH ITEMP3
057731,000073: 5514 00003 RELINT
057732,000074: 5515 00001 TC L
057733,000075:
057734,000076: 5516 30002 DOWNFLAG CA Q
057735,000077: 5517 05522 TC DEBIT
057736,000078: 5520 70001 MASK L # RESET BIT
057737,000079: 5521 15511 TCF COMFLAG
057738,000080:
057739,000081: 5522 64753 DEBIT AD ONE # GET DE BITS
057740,000082: 5523 00004 INHINT
057741,000083: 5524 54063 TS ITEMP3
057742,000084: 5525 34762 CA LOW4 # DEC15
057743,000085: 5526 54061 TS ITEMP1
057744,000086: 5527 50063 INDEX ITEMP3
057745,000087: 5530 27777 CA 0 -1 # ADRES
057746,000088: 5531 54001 TS L
057747,000089: 5532 34755 CA ZERO
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Page 1376
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057749,000091: 5533 00006 EXTEND
057750,000092: 5534 10061 DV ITEMP1 # A = FLAGWRD, L = (15 - BIT)
057751,000093: 5535 52062 DXCH ITEMP1
057752,000094: 5536 50061 INDEX ITEMP1
057753,000095: 5537 30074 CA FLAGWRD0
057754,000096: 5540 54001 TS L # CURRENT STATE
057755,000097: 5541 50062 INDEX ITEMP2
057756,000098: 5542 44735 CS BIT15 # -(15 - BIT)
057757,000099: 5543 00002 TC Q
057758,000100:
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Page 1377
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057760,000102: # DELAYJOB - A GENERAL ROUTINE TO DELAY A JOB A SPECIFIC AMOUNT OF TIME BEFORE PICKING UP AGAIN.
057761,000103:
057762,000104: # ENTRANCE REQUIREMENTS ...
057763,000105: # CAF DT DELAY JOB FOR DT CENTISECS
057764,000106: # TC BANKCALL
057765,000107: # CADR DELAYJOB
057766,000108:
057767,000109: 06,3764 BANK 06
057768,000110: 00,2000 SETLOC DLAYJOB
057769,000111: 00,2000 BANK
057770,000112:
057771,000113: # THIS MUST REMAIN IN BANK 0 *****************************************
057772,000114:
057773,000115: 00,3735 COUNT* $$/DELAY
057774,000116: 00,3735 00004 DELAYJOB INHINT
057775,000117: 00,3736 54002 TS Q # STORE DELAY DT IN Q FOR DLY -1 IN
057776,000118: 00,3737 34752 CAF DELAYNUM # WAITLIST
057777,000119: 00,3740 54070 DELLOOP TS RUPTREG1
057778,000120: 00,3741 50000 INDEX A
057779,000121: 00,3742 31326 CA DELAYLOC # IS THIS DELAYLOC AVAILABLE
057780,000122: 00,3743 00006 EXTEND
057781,000123: 00,3744 13752 BZF OK2DELAY # YES
057782,000124:
057783,000125: 00,3745 10070 CCS RUPTREG1 # NO, TRY NEXT DELAYLOC
057784,000126: 00,3746 13740 TCF DELLOOP
057785,000127:
057786,000128: 00,3747 52134 DXCH BUF2
057787,000129: 00,3750 05716 TC BAILOUT1 # NO AVAILABLE LOCS.
057788,000130: 00,3751 01104 OCT 1104
057789,000131:
057790,000132: 00,3752 33772 OK2DELAY CA TCSLEEP # SET WAITLIST IMMEDIATE RETURN
057791,000133: 00,3753 54061 TS WAITEXIT
057792,000134:
057793,000135: 00,3754 30004 CA FBANK
057794,000136: 00,3755 60070 AD RUPTREG1 # STORE BBANK FOR TASK CALL
057795,000137: 00,3756 54001 TS L
057796,000138:
057797,000139: 00,3757 33773 CAF WAKECAD # STORE CADR FOR TASK CALL
057798,000140: 00,3760 15211 TCF DLY2 -1 # DLY IS IN WAITLIST ROUTINE
057799,000141:
057800,000142: 00,3761 04645 TCGETCAD TC MAKECADR # GET CALLERS FCADR
057801,000143:
057802,000144: 00,3762 50070 INDEX RUPTREG1
057803,000145: 00,3763 55326 TS DELAYLOC # SAVE DELAY CADRS
057804,000146:
057805,000147: 00,3764 05133 TC JOBSLEEP
057806,000148:
057807,000149: 00,3765 34755 WAKER CAF ZERO
057808,000150: 00,3766 50006 INDEX BBANK
057809,000151: 00,3767 57326 XCH DELAYLOC # MAKE DELAYLOC AVAILABLE
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Page 1378
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057811,000153: 00,3770 05137 TC JOBWAKE
057812,000154:
057813,000155: 00,3771 05261 TC TASKOVER
057814,000156:
057815,000157: 00,3772 03757 TCSLEEP GENADR TCGETCAD -2
057816,000158: 00,3773 03765 WAKECAD GENADR WAKER
057817,000159:
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Page 1379
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057819,000161: # GENTRAN, A BLOCK TRANSFER ROUTINE.
057820,000162: # WRITTEN BY D. EYLES
057821,000163: # MOD 1 BY KERNAN UTILITYM REV 17 11/18/67
057822,000164: # MOD 2 BY SCHULENBERG (REMOVE RELINT) SKIPPER REV 4 2/28/68
057823,000165:
057824,000166: # THIS ROUTINE IS USEFULL FOR TRANSFERING N CONSECUTIVE ERASABLE OR FIXED QUANTITIES TO SOME OTHER N
057825,000167: # CONSECUTIVE ERASABLE LOCATIONS. IF BOTH BLOCKS OF DATA ARE IN SWITCHABLE EBANKS, THEY MUST BE IN THE SAME ONE.
057826,000168:
057827,000169: # GENTRAN IS CALLABLE IN A JOB AS WELL AS A RUPT. THE CALLING SEQUENCE IS:
057828,000170: # I CA N-1 # OF QUANTITIES MINUS ONE.
057829,000171: # I +1 TC GENTRAN IN FIXED-FIXED.
057830,000172: # I +2 ADRES L STARTING ADRES OF DATA TO BE MOVED.
057831,000173: # I +3 ADRES M STARTING ADRES OF DUPLICATION BLOCK.
057832,000174: # I +4 RETURNS HERE.
057833,000175:
057834,000176: # GENTRAN TAKES 25 MCT'S (300 MICROSECONDS) PER ITEM + 5 MCT'S (60 MICS) FOR ENTERING AND EXITING.
057835,000177: # A, L AND ITEMP1 ARE NOT PRESERVED.
057836,000178:
057837,000179: 5544 BLOCK 02
057838,000180: 4000 SETLOC FFTAG4
057839,000181: 4000 BANK
057840,000182:
057841,000183: 5544 0061 EBANK= ITEMP1
057842,000184:
057843,000185: 5544 COUNT* $$/TRAN
057844,000186:
057845,000187: 5544 00004 GENTRAN INHINT
057846,000188: 5545 54061 TS ITEMP1 # SAVE N-1.
057847,000189: 5546 50002 INDEX Q # C(Q) = ADRES L.
057848,000190: 5547 60000 AD 0 # ADRES (L + N - 1).
057849,000191: 5550 50000 INDEX A
057850,000192: 5551 30000 CA 0 # C(ABOVE).
057851,000193: 5552 54001 TS L # SAVE DATA.
057852,000194: 5553 30061 CA ITEMP1
057853,000195: 5554 50002 INDEX Q
057854,000196: 5555 60001 AD 1 # ADRES (M + N - 1).
057855,000197: 5556 50000 INDEX A
057856,000198: 5557 22000 LXCH 0 # STUFF IT.
057857,000199: 5560 10061 CCS ITEMP1 # LOOP UNTIL N-1 = 0.
057858,000200: 5561 15545 TCF GENTRAN +1
057859,000201: 5562 16741 TCF Q+2 # RETURN TO CALLER.
057860,000202:
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Page 1380
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057862,000204: # B5OFF ZERO BIT 5 OF EXTVBACT, WHICH IS SET BY TESTXACT.
057863,000205: # MAY BE USED AS NEEDED BY ANY EXTENDED VERB WHICH HAS DONE TESTXACT
057864,000206:
057865,000207: 5563 COUNT* $$/EXTVB
057866,000208:
057867,000209: 5563 44747 B5OFF CS BIT5
057868,000210: 5564 71044 MASK EXTVBACT
057869,000211: 5565 55044 TS EXTVBACT
057870,000212: 5566 05155 TC ENDOFJOB
057871,000213:
057872,000214:
057873,000215:
End of include-file SERVICE_ROUTINES.agc. Parent file is MAIN.agc