Source Code
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These source-code files are part of a reconstructed copy of Luminary 173, the
second (unflown) release of the Apollo 14 Lunar Module (LM) Apollo Guidance
Computer (AGC) software.
The reconstruction began with reconstructed source code for Luminary 178. Changes
between revision 173 and 178 were backed out, as described by Luminary memo 167
(revision 1). The reconstruction was verified by matching memory-bank checksums
to those listed in drawing 2021152N. Note that page numbers in the reconstructed
code match those for the baseline log section mentioned in each file's changelog;
the page numbers for a real Luminary 173 listing would be different.
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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058327,000002: ## Copyright: Public domain.
058328,000003: ## Filename: SERVICE_ROUTINES.agc
058329,000004: ## Purpose: A section of Luminary revision 173.
058330,000005: ## It is part of the reconstructed source code for the second
058331,000006: ## (unflown) release of the flight software for the Lunar
058332,000007: ## Module's (LM) Apollo Guidance Computer (AGC) for Apollo 14.
058333,000008: ## The code has been recreated from a reconstructed copy of
058334,000009: ## Luminary 178, as well as Luminary memo 167 (revision 1).
058335,000010: ## It has been adapted such that the resulting bugger words
058336,000011: ## exactly match those specified for Luminary 173 in NASA
058337,000012: ## drawing 2021152N, which gives relatively high confidence
058338,000013: ## that the reconstruction is correct.
058339,000014: ## Reference: pp. 1362-1368
058340,000015: ## Assembler: yaYUL
058341,000016: ## Contact: Ron Burkey <info@sandroid.org>.
058342,000017: ## Website: www.ibiblio.org/apollo/index.html
058343,000018: ## Mod history: 2019-09-18 MAS Created from Luminary 178.
058344,000019:
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Page 1362
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058346,000021: 10,3545 BANK 10
058347,000022: 10,2000 SETLOC DISPLAYS
058348,000023: 10,2000 BANK
058349,000024: 10,3545 COUNT* $$/DSPLA
058350,000025:
058351,000026: 10,3545 00004 UPENT2 INHINT
058352,000027: 10,3546 75661 MASK OCT77770
058353,000028: 10,3547 54001 TS L
058354,000029: 10,3550 40100 CS FLAGWRD4
058355,000030: 10,3551 70001 MASK L
058356,000031: 10,3552 26100 ADS FLAGWRD4
058357,000032: 10,3553 00003 JOIN RELINT
058358,000033: 10,3554 16742 TCF Q+1
058359,000034:
058360,000035: 10,3555 00004 DOWNENT2 INHINT
058361,000036: 10,3556 75661 MASK OCT77770
058362,000037: 10,3557 40000 COM
058363,000038: 10,3560 70100 MASK FLAGWRD4
058364,000039: 10,3561 54100 TS FLAGWRD4
058365,000040: 10,3562 13553 TCF JOIN
058366,000041:
058367,000042: 10,3563 4757 OCT7 EQUALS SEVEN
058368,000043:
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Page 1363
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058370,000045: # UPFLAG AND DOWNFLAG ARE ENTIRELY GENERAL FLAG SETTING AND CLEARING SUBROUTINES. USING THEM, WHETHER OR
058371,000046: # NOT IN INTERRUPT, ONE MAY SET OR CLEAR ANY SINGLE, NAMED BIT IN ANY ERASABLE REGISTER, SUBJECT OF COURSE TO
058372,000047: # EBANK SETTING. A "NAMED" BIT, AS THE WORD IS USED HERE, IS ANY BIT WITH A NAME FORMALLY ASSIGNED BY THE YUL
058373,000048: # ASSEMBLER.
058374,000049:
058375,000050: # AT PRESENT THE ONLY NAMED BITS ARE THOSE IN THE FLAGWORDS. ASSEMBLER CHANGES WILL MAKE IT POSSIBLE TO
058376,000051: # NAME ANY BIT IN ERASABLE MEMORY.
058377,000052:
058378,000053: # CALLING SEQUENCES ARE AS FOLLOWS:-
058379,000054:
058380,000055: # TC UPFLAG TC DOWNFLAG
058381,000056: # ADRES NAME OF FLAG ADRES NAME OF FLAG
058382,000057:
058383,000058: # RETURN IS TO THE LOCATION FOLLOWING THE "ADRES" ABOUT .58 MS AFTER THE "TC".
058384,000059:
058385,000060: # UPON RETURN A CONTAINS THE CURRENT FLAGWRD SETTING.
058386,000061:
058387,000062: 5515 BLOCK 02
058388,000063: 4000 SETLOC FFTAG1
058389,000064: 4000 BANK
058390,000065: 5515 COUNT* $$/FLAG
058391,000066:
058392,000067: 5515 30002 UPFLAG CA Q
058393,000068: 5516 05533 TC DEBIT
058394,000069: 5517 40000 COM # +(15 - BIT)
058395,000070: 5520 00006 EXTEND
058396,000071: 5521 04001 ROR LCHAN # SET BIT
058397,000072: 5522 50061 COMFLAG INDEX ITEMP1
058398,000073: 5523 54074 TS FLAGWRD0
058399,000074: 5524 22063 LXCH ITEMP3
058400,000075: 5525 00003 RELINT
058401,000076: 5526 00001 TC L
058402,000077:
058403,000078:
058404,000079: 5527 30002 DOWNFLAG CA Q
058405,000080: 5530 05533 TC DEBIT
058406,000081: 5531 70001 MASK L # RESET BIT
058407,000082: 5532 15522 TCF COMFLAG
058408,000083:
058409,000084:
058410,000085: 5533 64753 DEBIT AD ONE # GET DE BITS
058411,000086: 5534 00004 INHINT
058412,000087: 5535 54063 TS ITEMP3
058413,000088: 5536 34762 CA LOW4 # DEC15
058414,000089: 5537 54061 TS ITEMP1
058415,000090: 5540 50063 INDEX ITEMP3
058416,000091: 5541 27777 CA 0 -1 # ADRES
058417,000092: 5542 54001 TS L
058418,000093: 5543 34755 CA ZERO
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Page 1364
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058420,000095: 5544 00006 EXTEND
058421,000096: 5545 10061 DV ITEMP1 # A = FLAGWRD, L = (15 - BIT)
058422,000097: 5546 52062 DXCH ITEMP1
058423,000098: 5547 50061 INDEX ITEMP1
058424,000099: 5550 30074 CA FLAGWRD0
058425,000100: 5551 54001 TS L # CURRENT STATE
058426,000101: 5552 50062 INDEX ITEMP2
058427,000102: 5553 44735 CS BIT15 # -(15 - BIT)
058428,000103: 5554 00002 TC Q
058429,000104:
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Page 1365
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058431,000106: # DELAYJOB- A GENERAL ROUTINE TO DELAY A JOB A SPECIFIC AMOUNT OF TIME BEFORE PICKING UP AGAIN.
058432,000107:
058433,000108: # ENTRANCE REQUIREMENTS...
058434,000109: # CAF DT DELAY JOB FOR DT CENTISECS
058435,000110: # TC BANKCALL
058436,000111: # CADR DELAYJOB
058437,000112:
058438,000113: 06,3772 BANK 06
058439,000114: 00,2000 SETLOC DLAYJOB
058440,000115: 00,2000 BANK
058441,000116:
058442,000117: # THIS MUST REMAIN IN BANK 0 *****************************************
058443,000118: 00,3735 COUNT* $$/DELAY
058444,000119: 00,3735 35000 2SECDELY CAF 2SECS
058445,000120: 00,3736 00004 DELAYJOB INHINT
058446,000121: 00,3737 54002 TS Q # STORE DELAY DT IN Q FOR DLY -1 IN
058447,000122:
058448,000123: 00,3740 34752 CAF DELAYNUM # WAITLIST
058449,000124: 00,3741 54070 DELLOOP TS RUPTREG1
058450,000125: 00,3742 50000 INDEX A
058451,000126: 00,3743 31323 CA DELAYLOC # IS THIS DELAYLOC AVAILABLE
058452,000127: 00,3744 00006 EXTEND
058453,000128: 00,3745 13753 BZF OK2DELAY # YES
058454,000129:
058455,000130: 00,3746 10070 CCS RUPTREG1 # NO, TRY NEXT DELAYLOC
058456,000131: 00,3747 13741 TCF DELLOOP
058457,000132:
058458,000133: 00,3750 52134 DXCH BUF2
058459,000134: 00,3751 05717 TC BAILOUT1 # NO AVAILABLE LOCS.
058460,000135: 00,3752 31104 OCT 31104
058461,000136:
058462,000137: 00,3753 33773 OK2DELAY CA TCSLEEP # SET WAITLIST IMMEDIATE RETURN
058463,000138: 00,3754 54061 TS WAITEXIT
058464,000139:
058465,000140: 00,3755 30004 CA FBANK
058466,000141: 00,3756 60070 AD RUPTREG1 # STORE BBANK FOR TASK CALL
058467,000142: 00,3757 54001 TS L
058468,000143:
058469,000144: 00,3760 33774 CAF WAKECAD # STORE CADR FOR TASK CALL
058470,000145: 00,3761 15222 TCF DLY2 -1 # DLY IS IN WAITLIST ROUTINE
058471,000146:
058472,000147: 00,3762 04645 TCGETCAD TC MAKECADR # GET CALLERS FCADR
058473,000148:
058474,000149: 00,3763 50070 INDEX RUPTREG1
058475,000150: 00,3764 55323 TS DELAYLOC # SAVE DELAY CADRS
058476,000151:
058477,000152: 00,3765 05133 TC JOBSLEEP
058478,000153:
058479,000154: 00,3766 34755 WAKER CAF ZERO
058480,000155: 00,3767 50006 INDEX BBANK
058481,000156:
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Page 1366
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058483,000158: 00,3770 57323 XCH DELAYLOC # MAKE DELAYLOC AVAILABLE
058484,000159: 00,3771 05137 TC JOBWAKE
058485,000160:
058486,000161: 00,3772 05272 TC TASKOVER
058487,000162:
058488,000163: 00,3773 03760 TCSLEEP GENADR TCGETCAD -2
058489,000164: 00,3774 03766 WAKECAD GENADR WAKER
058490,000165:
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Page 1367
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058492,000167: # GENTRAN, A BLOCK TRANSFER ROUTINE.
058493,000168:
058494,000169: # WRITTEN BY D. EYLES
058495,000170: # MOD 1 BY KERNAN UTILITYM REV 17 11/18/67
058496,000171:
058497,000172: # MOD 2 BY SCHULENBERG (REMOVE RELINT) SKIPPER REV 4 2/28/68
058498,000173:
058499,000174: # THIS ROUTINE IS USEFULL FOR TRANSFERING N CONSECUTIVE ERASABLE OR FIXED QUANTITIES TO SOME OTHER N
058500,000175: # CONSECUTIVE ERASABLE LOCATIONS. IF BOTH BLOCKS OF DATA ARE IN SWITCHABLE EBANKS, THEY MUST BE IN THE SAME ONE.
058501,000176:
058502,000177: # GENTRAN IS CALLABLE IN A JOB AS WELL AS A RUPT. THE CALLING SEQUENCE IS:
058503,000178:
058504,000179: # I CA N-1 # OF QUANTITIES MINUS ONE.
058505,000180: # I +1 TC GENTRAN IN FIXED-FIXED.
058506,000181: # I +2 ADRES L STARTING ADRES OF DATA TO BE MOVED.
058507,000182: # I +3 ADRES M STARTING ADRES OF DUPLICATION BLOCK.
058508,000183: # I +4 RETURNS HERE.
058509,000184:
058510,000185: # GENTRAN TAKES 25 MCT'S (300 MICROSECONDS) PER ITEM + 5 MCT'S (60 MICS) FOR ENTERING AND EXITING.
058511,000186:
058512,000187: # A, L AND ITEMP1 ARE NOT PRESERVED.
058513,000188:
058514,000189: 5555 BLOCK 02
058515,000190: 4000 SETLOC FFTAG4
058516,000191: 4000 BANK
058517,000192:
058518,000193: 5555 0061 EBANK= ITEMP1
058519,000194:
058520,000195: 5555 COUNT* $$/TRAN
058521,000196:
058522,000197: 5555 00004 GENTRAN INHINT
058523,000198: 5556 54061 TS ITEMP1 # SAVE N-1.
058524,000199: 5557 50002 INDEX Q # C(Q) = ADRES L.
058525,000200: 5560 60000 AD 0 # ADRES (L + N - 1).
058526,000201: 5561 50000 INDEX A
058527,000202: 5562 30000 CA 0 # C(ABOVE).
058528,000203: 5563 54001 TS L # SAVE DATA.
058529,000204: 5564 30061 CA ITEMP1
058530,000205: 5565 50002 INDEX Q
058531,000206: 5566 60001 AD 1 # ADRES (M + N - 1).
058532,000207: 5567 50000 INDEX A
058533,000208: 5570 22000 LXCH 0 # STUFF IT.
058534,000209: 5571 10061 CCS ITEMP1 # LOOP UNTIL N-1 = 0.
058535,000210: 5572 15556 TCF GENTRAN +1
058536,000211: 5573 16744 TCF Q+2 # RETURN TO CALLER.
058537,000212:
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Page 1368
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058539,000214: # B5OFF ZERO BIT 5 OF EXTVBACT, WHICH IS SET BY TESTXACT.
058540,000215:
058541,000216: # MAY BE USED AS NEEDED BY ANY EXTENDED VERB WHICH HAS DONE TESTXACT
058542,000217:
058543,000218: 5574 COUNT* $$/EXTVB
058544,000219:
058545,000220: 5574 44747 B5OFF CS BIT5
058546,000221: 5575 71043 MASK EXTVBACT
058547,000222: 5576 55043 TS EXTVBACT
058548,000223: 5577 05155 TC ENDOFJOB
End of include-file SERVICE_ROUTINES.agc. Parent file is MAIN.agc