Source Code
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These source-code files are part of a reconstructed copy of Comanche 67, the
Apollo Guidance Computer (AGC) Command Module (CM) software for Apollo 12.
They have been adapted from sources files for Comanche 55, and updated via
disassembly of binary dumps of original core rope memory modules, part numbers
2003972-1081, 2003972-1091, 2003972-1111, 2003972-1121, 2003972-1131, and 2003972-1141.
Since only binary dumps (rather than listings) of Comanche 67 are available as source material,
all comments and labels are approximate.
They have been taken from other AGC programs where possible, or, in some places, written
from scratch to match what we believe would have been in the original listing.
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061501,000002: ## Copyright: Public domain.
061502,000003: ## Filename: SERVICE_ROUTINES.agc
061503,000004: ## Purpose: A section of Comanche revision 067.
061504,000005: ## It is part of the reconstructed source code for the flight
061505,000006: ## software for the Command Module's (CM) Apollo Guidance Computer
061506,000007: ## (AGC) for Apollo 12. No original listings of this program are
061507,000008: ## available; instead, this file was created via dissassembly of
061508,000009: ## dumps of Comanche 067 core rope modules and comparison with
061509,000010: ## other AGC programs.
061510,000011: ## Assembler: yaYUL
061511,000012: ## Contact: Ron Burkey <info@sandroid.org>.
061512,000013: ## Website: www.ibiblio.org/apollo/index.html
061513,000014: ## Mod history: 2023-08-16 MAS Created from Comanche 055.
061514,000015: ## 2024-03-15 MAS Updated for Comanche 067.
061515,000016:
061516,000017: 7722 BLOCK 3
061517,000018: 6000 SETLOC FFTAG6
061518,000019: 6000 BANK
061519,000020: 7722 COUNT 03/FLAG
061520,000021:
061521,000022: 7722 54001 UPENT2 TS L # WHICH FLAGWORD IS IT
061522,000023: 7723 75037 MASK OCT7
061523,000024: 7724 56001 XCH L # SAVE IN L FOR INDEXING
061524,000025:
061525,000026: 7725 75735 MASK OCT77770 # OBTAIN THE BIT INFORMATION
061526,000027: 7726 00004 INHINT # PREVENT INTERUPTS
061527,000028: 7727 54061 TS ITEMP1 # STORE THE BIT INFORMATION TEMPORARIALY
061528,000029:
061529,000030: 7730 50001 NDX L
061530,000031: 7731 40074 CS FLAGWRD0
061531,000032: 7732 70061 MASK ITEMP1
061532,000033: 7733 50001 NDX L
061533,000034: 7734 26074 ADS FLAGWRD0
061534,000035: 7735 00003 RELINT # RELEASE INTERUPT INHIBIT
061535,000036:
061536,000037: 7736 24002 INCR Q # OBTAIN THE CORRECT RETURN ADDRESS
061537,000038: 7737 00002 TC Q # RETURN
061538,000039:
061539,000040: 7740 54001 DOWNENT2 TS L # WHICH FLAGWORD IS IT
061540,000041: 7741 75037 MASK OCT7
061541,000042: 7742 56001 XCH L # SAVE IN L FOR INDEXING
061542,000043:
061543,000044: 7743 75735 MASK OCT77770 # OBTAIN THE BIT INFORMATION
061544,000045: 7744 40000 COM # START TO PROCESS THE INFORMATION
061545,000046:
061546,000047: 7745 00004 INHINT # PREVENT INTERUPTS
061547,000048: 7746 50001 NDX L
061548,000049: 7747 70074 MASK FLAGWRD0
061549,000050: 7750 50001 NDX L
061550,000051: 7751 54074 TS FLAGWRD0
061551,000052: 7752 00003 RELINT # RELEASE INTERUPT INHIBIT
061552,000053:
061553,000054: 7753 24002 INCR Q # OBTAIN THE CORRECT RETURN ADDRESS
061554,000055: 7754 00002 TC Q # RETURN
061555,000056:
061556,000057: 7755 5037 OCT7 EQUALS SEVEN
061557,000058: 10,3766 BANK 10
061558,000059:
061559,000060: # UPFLAG AND DOWNFLAG ARE ENTIRELY GENERAL FLAG SETTING AND CLEARING SUBROUTINES. USING THEM, WHETHER OR
061560,000061: # NOT IN INTERRUPT, ONE MAY SET OR CLEAR ANY SINGLE, NAMED BIT IN ANY ERASABLE REGISTER, SUBJECT OF COURSE TO
061561,000062: # EBANK SETTING. A "NAMED" BIT, AS THE WORD IS USED HERE, IS ANY BIT WITH A NAME FORMALLY ASSIGNED BY THE YUL
061562,000063: # ASSEMBLER.
061563,000064:
061564,000065: # AT PRESENT THE ONLY NAMED BITS ARE THOSE IN THE FLAGWORDS. ASSEMBLER CHANGES WILL MAKE IT POSSIBLE TO
061565,000066: # NAME ANY BIT IN ERASABLE MEMORY.
061566,000067:
061567,000068: # CALLING SEQUENCES ARE AS FOLLOWS:-
061568,000069: # TC UPFLAG TC DOWNFLAG
061569,000070: # ADRES NAME OF FLAG ADRES NAME OF FLAG
061570,000071:
061571,000072: # RETURN IS TO THE LOCATION FOLLOWING THE "ADRES" ABOUT .58 MS AFTER THE "TC".
061572,000073: # UPON RETURN A CONTAINS THE CURRENT FLAGWRD SETTING.
061573,000074:
061574,000075: 5562 BLOCK 02
061575,000076: 4000 SETLOC FFTAG1
061576,000077: 4000 BANK
061577,000078: 5562 COUNT* $$/FLAG
061578,000079:
061579,000080: 5562 30002 UPFLAG CA Q
061580,000081: 5563 05600 TC DEBIT
061581,000082: 5564 40000 COM # +(15 - BIT)
061582,000083: 5565 00006 EXTEND
061583,000084: 5566 04001 ROR LCHAN # SET BIT
061584,000085: 5567 50061 COMFLAG INDEX ITEMP1
061585,000086: 5570 54074 TS FLAGWRD0
061586,000087: 5571 22063 LXCH ITEMP3
061587,000088: 5572 00003 RELINT
061588,000089: 5573 00001 TC L
061589,000090:
061590,000091: 5574 30002 DOWNFLAG CA Q
061591,000092: 5575 05600 TC DEBIT
061592,000093: 5576 70001 MASK L # RESET BIT
061593,000094: 5577 15567 TCF COMFLAG
061594,000095:
061595,000096: 5600 65033 DEBIT AD ONE # GET DE BITS
061596,000097: 5601 00004 INHINT
061597,000098: 5602 54063 TS ITEMP3
061598,000099: 5603 35042 CA LOW4 # DEC15
061599,000100: 5604 54061 TS ITEMP1
061600,000101: 5605 50063 INDEX ITEMP3
061601,000102: 5606 27777 CA 0 -1 # ADRES
061602,000103: 5607 54001 TS L
061603,000104: 5610 35035 CA ZERO
061604,000105: 5611 00006 EXTEND
061605,000106: 5612 10061 DV ITEMP1 # A = FLAGWRD, L = (15 - BIT)
061606,000107: 5613 52062 DXCH ITEMP1
061607,000108: 5614 50061 INDEX ITEMP1
061608,000109: 5615 30074 CA FLAGWRD0
061609,000110: 5616 54001 TS L # CURRENT STATE
061610,000111: 5617 50062 INDEX ITEMP2
061611,000112: 5620 45015 CS BIT15 # -(15 - BIT)
061612,000113: 5621 00002 TC Q
061613,000114:
061614,000115: # DELAYJOB- A GENERAL ROUTINE TO DELAY A JOB A SPECIFIC AMOUNT OF TIME BEFORE PICKING UP AGAIN.
061615,000116:
061616,000117: # ENTRANCE REQUIREMENTS...
061617,000118: # CAF DT DELAY JOB FOR DT CENTISECS
061618,000119: # TC BANKCALL
061619,000120: # CADR DELAYJOB
061620,000121:
061621,000122: 06,3770 BANK 06
061622,000123: 00,2000 SETLOC DLAYJOB
061623,000124: 00,2000 BANK
061624,000125:
061625,000126: # THIS MUST REMAIN IN BANK 0 *****************************************
061626,000127:
061627,000128: 00,3732 COUNT 00/DELAY
061628,000129:
061629,000130: 00,3732 00004 DELAYJOB INHINT
061630,000131: 00,3733 54002 TS Q # STORE DELAY DT IN Q FOR DLY -1 IN
061631,000132: 00,3734 36214 CAF DELAYNUM # WAITLIST
061632,000133: 00,3735 54070 DELLOOP TS RUPTREG1
061633,000134: 00,3736 50000 INDEX A
061634,000135: 00,3737 31141 CA DELAYLOC # IS THIS DELAYLOC AVAILABLE
061635,000136: 00,3740 00006 EXTEND
061636,000137: 00,3741 13746 BZF OK2DELAY # YES
061637,000138:
061638,000139: 00,3742 10070 CCS RUPTREG1 # NO, TRY NEXT DELAYLOC
061639,000140: 00,3743 13735 TCF DELLOOP
061640,000141:
061641,000142: 00,3744 07755 TC BAILOUT # NO AVAILABLE LOCS AVAILABLE.
061642,000143: 00,3745 31104 OCT 31104
061643,000144:
061644,000145: 00,3746 33766 OK2DELAY CA TCSLEEP # SET WAITLIST IMMEDIATE RETURN
061645,000146: 00,3747 54061 TS WAITEXIT
061646,000147:
061647,000148: 00,3750 30004 CA FBANK
061648,000149: 00,3751 60070 AD RUPTREG1 # STORE BBANK FOR TASK CALL
061649,000150: 00,3752 54001 TS L
061650,000151:
061651,000152: 00,3753 33767 CAF WAKECAD # STORE CADR FOR TASK CALL
061652,000153: 00,3754 15271 TCF DLY2 -1 # DLY IS IN WAITLIST ROUTINE
061653,000154:
061654,000155: 00,3755 04725 TCGETCAD TC MAKECADR # GET CALLERS FCADR
061655,000156:
061656,000157: 00,3756 50070 INDEX RUPTREG1
061657,000158: 00,3757 55141 TS DELAYLOC # SAVE DELAY CADRS
061658,000159:
061659,000160: 00,3760 05211 TC JOBSLEEP
061660,000161:
061661,000162: 00,3761 35035 WAKER CAF ZERO
061662,000163: 00,3762 50006 INDEX BBANK
061663,000164: 00,3763 57141 XCH DELAYLOC # MAKE DELAYLOC AVAILABLE
061664,000165: 00,3764 05215 TC JOBWAKE
061665,000166:
061666,000167: 00,3765 05340 TC TASKOVER
061667,000168:
061668,000169: 00,3766 03753 TCSLEEP GENADR TCGETCAD -2
061669,000170: 00,3767 03761 WAKECAD GENADR WAKER
061670,000171:
061671,000172: # GENTRAN, A BLOCK TRANSFER ROUTINE.
061672,000173: # WRITTEN BY D. EYLES
061673,000174: # MOD 1 BY KERNAN UTILITYM REV 17 11/18/67
061674,000175: # MOD 2 BY SCHULENBERG (REMOVE RELINT) SKIPPER REV 4 2/28/68
061675,000176:
061676,000177: # THIS ROUTINE IS USEFULL FOR TRANSFERING N CONSECUTIVE ERASABLE OR FIXED QUANTITIES TO SOME OTHER N
061677,000178: # CONSECUTIVE ERASABLE LOCATIONS. IF BOTH BLOCKS OF DATA ARE IN SWITCHABLE EBANKS, THEY MUST BE IN THE SAME ONE.
061678,000179:
061679,000180: # GENTRAN IS CALLABLE IN A JOB AS WELL AS A RUPT. THE CALLING SEQUENCE IS:
061680,000181: # I CA N-1 # OF QUANTITIES MINUS ONE.
061681,000182: # I +1 TC GENTRAN IN FIXED-FIXED.
061682,000183: # I +2 ADRES L STARTING ADRES OF DATA TO BE MOVED.
061683,000184: # I +3 ADRES M STARTING ADRES OF DUPLICATION BLOCK.
061684,000185: # I +4 RETURNS HERE.
061685,000186:
061686,000187: # GENTRAN TAKES 25 MCT'S (300 MICROSECONDS) PER ITEM + 5 MCT'S (60 MICS) FOR ENTERING AND EXITING.
061687,000188: # A, L AND ITEMP1 ARE NOT PRESERVED.
061688,000189:
061689,000190: 5622 BLOCK 02
061690,000191: 4000 SETLOC FFTAG4
061691,000192: 4000 BANK
061692,000193:
061693,000194: 5622 0061 EBANK= ITEMP1
061694,000195:
061695,000196: 5622 COUNT* $$/TRAN
061696,000197:
061697,000198: 5622 00004 GENTRAN INHINT
061698,000199: 5623 54061 TS ITEMP1 # SAVE N-1.
061699,000200: 5624 50002 INDEX Q # C(Q) = ADRES L.
061700,000201: 5625 60000 AD 0 # ADRES (L + N - 1).
061701,000202: 5626 50000 INDEX A
061702,000203: 5627 30000 CA 0 # C(ABOVE).
061703,000204: 5630 54001 TS L # SAVE DATA.
061704,000205: 5631 30061 CA ITEMP1
061705,000206: 5632 50002 INDEX Q
061706,000207: 5633 60001 AD 1 # ADRES (M + N - 1).
061707,000208: 5634 50000 INDEX A
061708,000209: 5635 22000 LXCH 0 # STUFF IT.
061709,000210: 5636 10061 CCS ITEMP1 # LOOP UNTIL N-1 = 0.
061710,000211: 5637 15623 TCF GENTRAN +1
061711,000212: 5640 16710 TCF Q+2 # RETURN TO CALLER.
061712,000213:
061713,000214: # B5OFF ZERO BIT 5 OF EXTVBACT, WHICH IS SET BY TESTXACT.
061714,000215: # MAY BE USED AS NEEDED BY ANY EXTENDED VERB WHICH HAS DONE TESTXACT
061715,000216:
061716,000217: 5641 COUNT* $$/EXTVB
061717,000218:
061718,000219: 5641 45027 B5OFF CS BIT5
061719,000220: 5642 71044 MASK EXTVBACT
061720,000221: 5643 55044 TS EXTVBACT
061721,000222: 5644 05233 TC ENDOFJOB
061722,000223:
061723,000224: # SUBROUTINES TO TURN OFF AND TURN ON TRACKER FAIL LIGHT.
061724,000225:
061725,000226: 5645 00004 TRFAILOF INHINT
061726,000227: 5646 47704 CS OCT40200 # TURN OFF TRACKER LIGHT
061727,000228: 5647 71036 MASK DSPTAB +11D
061728,000229: 5650 65015 AD BIT15
061729,000230: 5651 55036 TS DSPTAB +11D
061730,000231: 5652 41331 CS OPTMODES # TO INSURE THAT OCDU FAIL WILL GO ON
061731,000232: 5653 75025 MASK BIT7 # AGAIN IF IT WAS ON IN ADDITION TO
061732,000233: 5654 27331 ADS OPTMODES # TRACKER FAIL.
061733,000234:
061734,000235: 5655 00003 REQ RELINT
061735,000236: 5656 00002 TC Q
061736,000237:
061737,000238: 5657 00004 TRFAILON INHINT
061738,000239: 5660 41036 CS DSPTAB +11D # TURN ON
061739,000240: 5661 77704 MASK OCT40200
061740,000241: 5662 27036 ADS DSPTAB +11D
061741,000242: 5663 15655 TCF REQ
061742,000243:
061743,000244:
061744,000245:
061745,000246:
End of include-file SERVICE_ROUTINES.agc. Parent file is MAIN.agc