Source Code
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These source-code files are part of a reconstructed copy of Luminary 98, a
development version of the Apollo 11 Lunar Module (LM) Apollo Guidance Computer
(AGC) software.
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 memo 85, using asterisks
indicating changed lines in the listing as a guide. While no listing of this
version is known to exist, nor are the memory-bank checksums available,
the reconstruction is believed to be correct because it was an an intermediate
step in reconstructing Luminary 97 whose reconstruction was
verified by matching memory-bank checksums to those listed in drawing 2021152G.
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 98 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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057515,000002: ## Copyright: Public domain.
057516,000003: ## Filename: SERVICE_ROUTINES.agc
057517,000004: ## Purpose: A section of Luminary revision 98.
057518,000005: ## It is part of the reconstructed source code for the a
057519,000006: ## development version of the flight software for the Lunar
057520,000007: ## Module's (LM) Apollo Guidance Computer (AGC) for Apollo 11.
057521,000008: ## The code has been recreated from a copy of Luminary 99
057522,000009: ## revision 001, using asterisks indicating changed lines in
057523,000010: ## the listing and Luminary Memo #85, which lists changes between
057524,000011: ## Luminary 98 and 99.
057525,000012: ## Reference: pp. 1374-1380
057526,000013: ## Assembler: yaYUL
057527,000014: ## Contact: Ron Burkey <info@sandroid.org>.
057528,000015: ## Website: www.ibiblio.org/apollo/index.html
057529,000016: ## Mod history: 2019-07-28 MAS Created from Luminary 99.
057530,000017:
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Page 1374
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057532,000019: 10,3544 BANK 10
057533,000020: 10,2000 SETLOC DISPLAYS
057534,000021: 10,2000 BANK
057535,000022: 10,3544 COUNT* $$/DSPLA
057536,000023:
057537,000024: 10,3544 00004 UPENT2 INHINT
057538,000025: 10,3545 75660 MASK OCT77770
057539,000026: 10,3546 54001 TS L
057540,000027: 10,3547 40100 CS FLAGWRD4
057541,000028: 10,3550 70001 MASK L
057542,000029: 10,3551 26100 ADS FLAGWRD4
057543,000030: 10,3552 00003 JOIN RELINT
057544,000031: 10,3553 16737 TCF Q+1
057545,000032:
057546,000033: 10,3554 00004 DOWNENT2 INHINT
057547,000034: 10,3555 75660 MASK OCT77770
057548,000035: 10,3556 40000 COM
057549,000036: 10,3557 70100 MASK FLAGWRD4
057550,000037: 10,3560 54100 TS FLAGWRD4
057551,000038: 10,3561 13552 TCF JOIN
057552,000039:
057553,000040: 10,3562 4757 OCT7 EQUALS SEVEN
057554,000041:
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Page 1375
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057556,000043: # UPFLAG AND DOWNFLAG ARE ENTIRELY GENERAL FLAG SETTING AND CLEARING SUBROUTINES. USING THEM, WHETHER OR
057557,000044: # NOT IN INTERRUPT, ONE MAY SET OR CLEAR ANY SINGLE, NAMED BIT IN ANY ERASABLE REGISTER, SUBJECT OF COURSE TO
057558,000045: # EBANK SETTING. A "NAMED" BIT, AS THE WORD IS USED HERE, IS ANY BIT WITH A NAME FORMALLY ASSIGNED BY THE YUL
057559,000046: # ASSEMBLER.
057560,000047:
057561,000048: # AT PRESENT THE ONLY NAMED BITS ARE THOSE IN THE FLAGWORDS. ASSEMBLER CHANGES WILL MAKE IT POSSIBLE TO
057562,000049: # NAME ANY BIT IN ERASABLE MEMORY.
057563,000050:
057564,000051: # CALLING SEQUENCES ARE AS FOLLOWS :-
057565,000052: # TC UPFLAG TC DOWNFLAG
057566,000053: # ADRES NAME OF FLAG ADRES NAME OF FLAG
057567,000054:
057568,000055: # RETURN IS TO THE LOCATION FOLLOWING THE "ADRES" ABOUT .58 MS AFTER THE "TC".
057569,000056: # UPON RETURN A CONTAINS THE CURRENT FLAGWRD SETTING.
057570,000057:
057571,000058: 5504 BLOCK 02
057572,000059: 4000 SETLOC FFTAG1
057573,000060: 4000 BANK
057574,000061: 5504 COUNT* $$/FLAG
057575,000062:
057576,000063: 5504 30002 UPFLAG CA Q
057577,000064: 5505 05522 TC DEBIT
057578,000065: 5506 40000 COM # +(15 - BIT)
057579,000066: 5507 00006 EXTEND
057580,000067: 5510 04001 ROR LCHAN # SET BIT
057581,000068: 5511 50061 COMFLAG INDEX ITEMP1
057582,000069: 5512 54074 TS FLAGWRD0
057583,000070: 5513 22063 LXCH ITEMP3
057584,000071: 5514 00003 RELINT
057585,000072: 5515 00001 TC L
057586,000073:
057587,000074: 5516 30002 DOWNFLAG CA Q
057588,000075: 5517 05522 TC DEBIT
057589,000076: 5520 70001 MASK L # RESET BIT
057590,000077: 5521 15511 TCF COMFLAG
057591,000078:
057592,000079: 5522 64753 DEBIT AD ONE # GET DE BITS
057593,000080: 5523 00004 INHINT
057594,000081: 5524 54063 TS ITEMP3
057595,000082: 5525 34762 CA LOW4 # DEC15
057596,000083: 5526 54061 TS ITEMP1
057597,000084: 5527 50063 INDEX ITEMP3
057598,000085: 5530 27777 CA 0 -1 # ADRES
057599,000086: 5531 54001 TS L
057600,000087: 5532 34755 CA ZERO
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Page 1376
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057602,000089: 5533 00006 EXTEND
057603,000090: 5534 10061 DV ITEMP1 # A = FLAGWRD, L = (15 - BIT)
057604,000091: 5535 52062 DXCH ITEMP1
057605,000092: 5536 50061 INDEX ITEMP1
057606,000093: 5537 30074 CA FLAGWRD0
057607,000094: 5540 54001 TS L # CURRENT STATE
057608,000095: 5541 50062 INDEX ITEMP2
057609,000096: 5542 44735 CS BIT15 # -(15 - BIT)
057610,000097: 5543 00002 TC Q
057611,000098:
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Page 1377
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057613,000100: # DELAYJOB - A GENERAL ROUTINE TO DELAY A JOB A SPECIFIC AMOUNT OF TIME BEFORE PICKING UP AGAIN.
057614,000101:
057615,000102: # ENTRANCE REQUIREMENTS ...
057616,000103: # CAF DT DELAY JOB FOR DT CENTISECS
057617,000104: # TC BANKCALL
057618,000105: # CADR DELAYJOB
057619,000106:
057620,000107: 06,3764 BANK 06
057621,000108: 00,2000 SETLOC DLAYJOB
057622,000109: 00,2000 BANK
057623,000110:
057624,000111: # THIS MUST REMAIN IN BANK 0 *****************************************
057625,000112:
057626,000113: 00,3735 COUNT* $$/DELAY
057627,000114: 00,3735 00004 DELAYJOB INHINT
057628,000115: 00,3736 54002 TS Q # STORE DELAY DT IN Q FOR DLY -1 IN
057629,000116: 00,3737 34752 CAF DELAYNUM # WAITLIST
057630,000117: 00,3740 54070 DELLOOP TS RUPTREG1
057631,000118: 00,3741 50000 INDEX A
057632,000119: 00,3742 31326 CA DELAYLOC # IS THIS DELAYLOC AVAILABLE
057633,000120: 00,3743 00006 EXTEND
057634,000121: 00,3744 13752 BZF OK2DELAY # YES
057635,000122:
057636,000123: 00,3745 10070 CCS RUPTREG1 # NO, TRY NEXT DELAYLOC
057637,000124: 00,3746 13740 TCF DELLOOP
057638,000125:
057639,000126: 00,3747 52134 DXCH BUF2
057640,000127: 00,3750 05716 TC BAILOUT1 # NO AVAILABLE LOCS.
057641,000128: 00,3751 01104 OCT 1104
057642,000129:
057643,000130: 00,3752 33772 OK2DELAY CA TCSLEEP # SET WAITLIST IMMEDIATE RETURN
057644,000131: 00,3753 54061 TS WAITEXIT
057645,000132:
057646,000133: 00,3754 30004 CA FBANK
057647,000134: 00,3755 60070 AD RUPTREG1 # STORE BBANK FOR TASK CALL
057648,000135: 00,3756 54001 TS L
057649,000136:
057650,000137: 00,3757 33773 CAF WAKECAD # STORE CADR FOR TASK CALL
057651,000138: 00,3760 15211 TCF DLY2 -1 # DLY IS IN WAITLIST ROUTINE
057652,000139:
057653,000140: 00,3761 04645 TCGETCAD TC MAKECADR # GET CALLERS FCADR
057654,000141:
057655,000142: 00,3762 50070 INDEX RUPTREG1
057656,000143: 00,3763 55326 TS DELAYLOC # SAVE DELAY CADRS
057657,000144:
057658,000145: 00,3764 05133 TC JOBSLEEP
057659,000146:
057660,000147: 00,3765 34755 WAKER CAF ZERO
057661,000148: 00,3766 50006 INDEX BBANK
057662,000149: 00,3767 57326 XCH DELAYLOC # MAKE DELAYLOC AVAILABLE
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Page 1378
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057664,000151: 00,3770 05137 TC JOBWAKE
057665,000152:
057666,000153: 00,3771 05261 TC TASKOVER
057667,000154:
057668,000155: 00,3772 03757 TCSLEEP GENADR TCGETCAD -2
057669,000156: 00,3773 03765 WAKECAD GENADR WAKER
057670,000157:
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Page 1379
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057672,000159: # GENTRAN, A BLOCK TRANSFER ROUTINE.
057673,000160: # WRITTEN BY D. EYLES
057674,000161: # MOD 1 BY KERNAN UTILITYM REV 17 11/18/67
057675,000162: # MOD 2 BY SCHULENBERG (REMOVE RELINT) SKIPPER REV 4 2/28/68
057676,000163:
057677,000164: # THIS ROUTINE IS USEFULL FOR TRANSFERING N CONSECUTIVE ERASABLE OR FIXED QUANTITIES TO SOME OTHER N
057678,000165: # CONSECUTIVE ERASABLE LOCATIONS. IF BOTH BLOCKS OF DATA ARE IN SWITCHABLE EBANKS, THEY MUST BE IN THE SAME ONE.
057679,000166:
057680,000167: # GENTRAN IS CALLABLE IN A JOB AS WELL AS A RUPT. THE CALLING SEQUENCE IS:
057681,000168: # I CA N-1 # OF QUANTITIES MINUS ONE.
057682,000169: # I +1 TC GENTRAN IN FIXED-FIXED.
057683,000170: # I +2 ADRES L STARTING ADRES OF DATA TO BE MOVED.
057684,000171: # I +3 ADRES M STARTING ADRES OF DUPLICATION BLOCK.
057685,000172: # I +4 RETURNS HERE.
057686,000173:
057687,000174: # GENTRAN TAKES 25 MCT'S (300 MICROSECONDS) PER ITEM + 5 MCT'S (60 MICS) FOR ENTERING AND EXITING.
057688,000175: # A, L AND ITEMP1 ARE NOT PRESERVED.
057689,000176:
057690,000177: 5544 BLOCK 02
057691,000178: 4000 SETLOC FFTAG4
057692,000179: 4000 BANK
057693,000180:
057694,000181: 5544 0061 EBANK= ITEMP1
057695,000182:
057696,000183: 5544 COUNT* $$/TRAN
057697,000184:
057698,000185: 5544 00004 GENTRAN INHINT
057699,000186: 5545 54061 TS ITEMP1 # SAVE N-1.
057700,000187: 5546 50002 INDEX Q # C(Q) = ADRES L.
057701,000188: 5547 60000 AD 0 # ADRES (L + N - 1).
057702,000189: 5550 50000 INDEX A
057703,000190: 5551 30000 CA 0 # C(ABOVE).
057704,000191: 5552 54001 TS L # SAVE DATA.
057705,000192: 5553 30061 CA ITEMP1
057706,000193: 5554 50002 INDEX Q
057707,000194: 5555 60001 AD 1 # ADRES (M + N - 1).
057708,000195: 5556 50000 INDEX A
057709,000196: 5557 22000 LXCH 0 # STUFF IT.
057710,000197: 5560 10061 CCS ITEMP1 # LOOP UNTIL N-1 = 0.
057711,000198: 5561 15545 TCF GENTRAN +1
057712,000199: 5562 16741 TCF Q+2 # RETURN TO CALLER.
057713,000200:
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Page 1380
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057715,000202: # B5OFF ZERO BIT 5 OF EXTVBACT, WHICH IS SET BY TESTXACT.
057716,000203: # MAY BE USED AS NEEDED BY ANY EXTENDED VERB WHICH HAS DONE TESTXACT
057717,000204:
057718,000205: 5563 COUNT* $$/EXTVB
057719,000206:
057720,000207: 5563 44747 B5OFF CS BIT5
057721,000208: 5564 71044 MASK EXTVBACT
057722,000209: 5565 55044 TS EXTVBACT
057723,000210: 5566 05155 TC ENDOFJOB
057724,000211:
057725,000212:
057726,000213:
End of include-file SERVICE_ROUTINES.agc. Parent file is MAIN.agc