GAP: ASSEMBLE REVISION 072 OF AGC PROGRAM ARTEMIS BY NASA 2021114-011 11:40 FEB. 26, 1971Note that the date is the date of the printout, not the date of the program revision.
Source Code
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These source-code files were obtained by digitally photographing
an Artemis 72 (Apollo 15-17 Command Module) program listing from a private
collection and then
modifying pre-existing Comanche 55 (Apollo 11) source files to
incorporate changes. Photography was by Ron Burkey, and transcription
was performed by a team of volunteers. Note that the page images
presented online are of reduced quality, and that additional images
may be available. Report any conversion errors or legibility
problems in page images to info@sandroid.org.
Notations on the program listing read, in part:GAP: ASSEMBLE REVISION 072 OF AGC PROGRAM ARTEMIS BY NASA 2021114-011 11:40 FEB. 26, 1971Note that the date is the date of the printout, not the date of the program revision. |
041925,000002: ## Copyright: Public domain.
041926,000003: ## Filename: TVCEXECUTIVE.agc
041927,000004: ## Purpose: Part of the source code for Artemis (i.e., Colossus 3),
041928,000005: ## build 072. This is for the Command Module's (CM)
041929,000006: ## Apollo Guidance Computer (AGC), for
041930,000007: ## Apollo 15-17.
041931,000008: ## Assembler: yaYUL
041932,000009: ## Contact: Steve Case <case1780@adelphia.net>
041933,000010: ## Website: www.ibiblio.org/apollo/index.html
041934,000011: ## Page Scans: www.ibiblio.org/apollo/ScansForConversion/Artemis072/
041935,000012: ## Mod history: 2009-09-13 SMC Adapted from Comanche055 files.
041936,000013: ## 2009-09-14 JL Fix typos. Fix page numbers. Remove change comments. Restore hard tabs.
041937,000014: ## 2010-02-20 RSB Un-##'d this header.
041938,000015: ## 2017-01-28 RSB WTIH -> WITH.
041939,000016: ## 2017-02-09 RSB Proofed comment text by diff'ing vs Comanche 55
041940,000017: ## and/or octopus/ProoferComments as most-appropriate.
041941,000018:
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Page 950 |
041943,000020: # PROGRAM NAME.... TVCEXECUTIVE, CONSISTING OF TVCEXEC, NEEDLEUP, VARGAINS
041944,000021: # 1SHOTCHK, REPCHEK, CG.CORR, COPYCYCLES, ETC.
041945,000022: # LOG SECTION...TVCEXECUTIVE SUBROUTINE...DAPCSM
041946,000023: # MODIFIED BY SCHLUNDT 21 OCTOBER 1968
041947,000024: # MODIFIED BY BEALS TO ELIMINATE CSMMASS UPDATE LOGIC (NOW DONE IN S40.8)
041948,000025: # FUNCTIONAL DESCRIPTION....
041949,000026:
041950,000027: # *A SELF-PERPETUATING WAITLIST TASK AT 1/2 SECOND INTERVALS WHICH:
041951,000028: # PREPARES THE ROLL DAP WITH OGA (CDUX)
041952,000029: # PREPARES THE ROLL FDAI NEEDLE (FLY-TO OGA ERROR)
041953,000030: # PREPARES THE ROLL PHASE PLANE OGAERR (FLY-FROM OGA ERROR)
041954,000031: # PREPARES THE TVC ROLLDAP TASK WAITLIST CALL (3 CS DELAY)
041955,000032: # UPDATES THE NEEDLES DISPLAY
041956,000033: # CALLS MASSPROP TO UPDATE INERTIA DATA
041957,000034: # UPDATES PITCH, YAW, AND ROLL DAP GAINS FROM MASSPROP DATA
041958,000035: # PERFORMS ONE-SHOT CORRECTION FOR TMC LOOP 0-3 SEC AFTER IGNITION
041959,000036: # PERFORMS REPETITIVE UPDATES FOR TMC LOOP AFTER THE ONE-SHOT CORR.
041960,000037:
041961,000038: # CALLING SEQUENCE....
041962,000039:
041963,000040: # *TVCEXEC CALLED AS A WAITLIST TASK, IN PARTICULAR BY TVCINIT4 AND BY
041964,000041: # ITSELF, BOTH AT 1/2 SECOND INTERVALS
041965,000042:
041966,000043: # NORMAL EXIT MODE.... TASKOVER
041967,000044:
041968,000045: # ALARM OR ABORT EXIT MODES.... NONE
041969,000046:
041970,000047: # SUBROUTINES CALLED....NEEDLER, S40.15, MASSPROP, TASKOVER, IBNKCALL
041971,000048:
041972,000049: # OTHER INTERFACES....
041973,000050:
041974,000051: # *TVCRESTART PACKAGE FOR RESTARTS
041975,000052: # *PITCHDAP, YAWDAP FOR VARIABLE GAINS AND ENGINE TRIM ANGLES
041976,000053: # ERASABLE INITIALIZATION REQUIRED....
041977,000054:
041978,000055: # *SEE TVCDAPON....TVCINIT4
041979,000056: # *VARK AND 1/CONACC (S40.15 OF TVCINITIALIZE)
041980,000057: # *PAD LOAD EREPFRAC
041981,000058: # *BITS 15,14 OF FLAGWRD6 (T5 BITS)
041982,000059: # *TVCEXPHS FOR RESTARTS
041983,000060: # *ENGINE-ON BIT (11.13) FOR RESTARTS
041984,000061: # *CDUX, OGAD
041985,000062:
041986,000063: # OUTPUT....
041987,000064:
041988,000065: # *ROLL DAP OGANOW, FDAI NEEDLE (AK). AND PHASE PLANE OGAERR
041989,000066: # *VARIABLE GAINS FOR PITCH/YAW AND ROLL TVC DAPS
041990,000067: # *SINGLE-SHOT AND REPETITIVE CORRECTIONS TO ENGINE TRIM ANGLES
041991,000068: # PACTOFF AND YACTOFF
041992,000069: # DEBRIS.... MUCH, BUT SHAREABLE WITH RCS/ENTRY, ALL IN EBANK6
041993,000070:
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Page 951 |
041995,000072: 16,2000 SETLOC DAPROLL
041996,000073: 16,2000 BANK
041997,000074: 16,3037 E6,1446 EBANK= CNTR
041998,000075: 16,3037 COUNT* $$/TVCX
041999,000076:
042000,000077:
042001,000078: 16,3037 40102 TVCEXEC CS FLAGWRD6 # CHECK FOR TERMINATION (BITS 15,14 READ
042002,000079: 16,3040 74076 MASK DPCONFIG # 10 FROM TVCDAPON TO RCSDAPON
042003,000080: 16,3041 00006 EXTEND
042004,000081: 16,3042 63217 BZMF TVCEXFIN # TERMINATE
042005,000082:
042006,000083: 16,3043 35011 CAF .5SEC # W.L. CALL TO PERPETUATE TVCEXEC
042007,000084: 16,3044 05223 TC TWIDDLE
042008,000085: 16,3045 03037 ADRES TVCEXEC
042009,000086: 16,3046 30032 ROLLPREP CAE CDUX # UPDATE ROLL LADDERS (NO NEED TO RESTART-
042010,000087: 16,3047 57645 XCH OGANOW # PROTECT, SINCE ROLL DAPS RE-START)
042011,000088: 16,3050 57646 XCH OGAPAST
042012,000089:
042013,000090: 16,3051 31447 CAE OGAD # PREPARE ROLL FDAI NEEDLE WITH FLY-TO
042014,000091: 16,3052 00006 EXTEND # ERROR (COMMAND - MEASURED)
042015,000092: 16,3053 21645 MSU OGANOW
042016,000093: 16,3054 55476 TS AK # FLY-TO OGA ERROR, SC.AT B-1 REVS
042017,000094:
042018,000095: 16,3055 00006 EXTEND # PREPARE ROLL DAP PHASE PLANE OGAERR
042019,000096: 16,3056 74751 MP -BIT14
042020,000097: 16,3057 55647 TS OGAERR # PHASE-PLANE (FLY-FROM) OGAERROR,
042021,000098: # SC.AT B+0 REVS
042022,000099:
042023,000100: 16,3060 36214 CAF THREE # SET UP ROLL DAP TASK (ALLOW SOME TIME)
042024,000101: 16,3061 05223 TC TWIDDLE
042025,000102: 16,3062 03342 ADRES ROLLDAP
042026,000103: 16,3063 04714 NEEDLEUP TC IBNKCALL # DO A NEEDLES UPDATE (RETURNS AFTER CADR)
042027,000104: 16,3064 42425 CADR NEEDLER # (NEEDLES RESTARTS ITSELF)
042028,000105:
042029,000106: 16,3065 11634 VARGAINS CCS VCNTR # TEST FOR GAIN UPDATE TIME
042030,000107: 16,3066 13074 TCF EXECCOPY # NOT YET
042031,000108: 16,3067 04714 GAINCHNG TC IBNKCALL # UPDATE IXX, IAVG, IAVG/TLX
042032,000109: 16,3070 13347 CADR FIXCW # MASSPROP ENTRY (ALREADY INITIALIZED)
042033,000110: 16,3071 04714 TC IBNKCALL # UPDATE 1/CONACC, VARK
042034,000111: 16,3072 36452 CADR S40.15 # (S40.15 IS IN TVCINITIALIZE)
042035,000112: 16,3073 34351 CAF NINETEEN # RESET THE VARIABLE-GAIN UPDATE COUNTER
042036,000113: 16,3074 55634 EXECCOPY TS VCNTR
042037,000114: 16,3075 11446 1SHOTCHK CCS CNTR # CHECK TIME FOR ONE-SHOT OR REPCORR
042038,000115: 16,3076 13102 TCF +4 # NOT YET
042039,000116: 16,3077 13115 TCF 1SHOTOK # NOW
042040,000117: 16,3100 13106 TCF REPCHEK # ONE-SHOT OVER, ON TO REPCORR
042041,000118: 16,3101 13115 TCF 1SHOTOK # NOW (ONE-SHOT ONLY, NO REPCORR)
042042,000119:
042043,000120: 16,3102 55661 +4 TS CNTRTMP # COUNT DOWN
042044,000121: 16,3103 34766 CAF FOUR # SET UP TVCEXPHS FOR ENTRY AT CNTRCOPY
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Page 952 |
042046,000123: 16,3104 55644 TS TVCEXPHS
042047,000124: 16,3105 13215 TCF CNTRCOPY
042048,000125:
042049,000126: 16,3106 31633 REPCHEK CAE REPFRAC # CHECK FOR REPETITIVE UPDATES
042050,000127: 16,3107 00006 EXTEND
042051,000128: 16,3110 63217 BZMF TVCEXFIN # NO, OVER-AND-OUT
042052,000129: 16,3111 55445 TS TEMPDAP +1 # YES, SET UP CORRECTION FRACTION
042053,000130: 16,3112 34767 CAF TWO # SET UP TVCEXPHS FOR ENTRY AT CORSETUP
042054,000131: 16,3113 55644 TS TVCEXPHS
042055,000132: 16,3114 13126 TCF CORSETUP
042056,000133:
042057,000134: 16,3115 34762 1SHOTOK CAF ENGONBIT
042058,000135: 16,3116 70101 MASK FLAGWRD5
042059,000136: 16,3117 10000 CCS A
042060,000137: 16,3120 13122 TCF +2 # ONE-SHOT OK
042061,000138: 16,3121 13217 TCF TVCEXFIN # NO, TERMINATE
042062,000139:
042063,000140: 16,3122 25644 INCR TVCEXPHS # (1)
042064,000141: 16,3123 34754 TEMPSET CAF FCORFRAC # SET UP CORRECTION FRACTION
042065,000142: 16,3124 55445 TS TEMPDAP +1
042066,000143:
042067,000144: 16,3125 25644 INCR TVCEXPHS # ENTRY FROM REPCHECK AT NEXT LOCATION (2)
042068,000145: 16,3126 31465 CORSETUP CAE DAPDATR1 # CHECK FOR LEM-OFF/ON
042069,000146: 16,3127 74754 MASK BIT13 # (NOTE, SHOWS LEM-OFF)
042070,000147: 16,3130 00006 EXTEND
042071,000148: 16,3131 13133 BZF +2 # LEM IS ON, PICK UP TEMPDAP+1
042072,000149: 16,3132 31445 CAE TEMPDAP +1 # LEM IS OFF, PICK UP 2(TEMPDAP+1)
042073,000150: 16,3133 61445 AD TEMPDAP +1
042074,000151: 16,3134 55444 TS TEMPDAP # CG.CORR USES TEMPDAP
042075,000152:
042076,000153: 16,3135 37702 CAF NEGONE # SET UP FOR CNTR = -1 (ONE-SHOT DONE)
042077,000154: 16,3136 55661 TS CNTRTMP # (COPYCYCLE AT .CNTRCOPY.)
042078,000155:
042079,000156: 16,3137 00006 CG.CORR EXTEND # PITCH TMC LOOP
042080,000157: 16,3140 31606 DCA PDELOFF
042081,000158: 16,3141 53656 DXCH PACTTMP
042082,000159: 16,3142 00006 EXTEND
042083,000160: 16,3143 41606 DCS PDELOFF
042084,000161: 16,3144 20001 DDOUBL
042085,000162: 16,3145 20001 DDOUBL
042086,000163: 16,3146 53612 DXCH TTMP1
042087,000164: 16,3147 00006 EXTEND
042088,000165: 16,3150 31602 DCA DELPBAR
042089,000166: 16,3151 20001 DDOUBL
042090,000167: 16,3152 20001 DDOUBL
042091,000168: 16,3153 21612 DAS TTMP1
042092,000169: 16,3154 00006 EXTEND
042093,000170: 16,3155 31612 DCA TTMP1
042094,000171: 16,3156 00006 EXTEND
042095,000172: 16,3157 71444 MP TEMPDAP
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Page 953 |
042097,000174: 16,3160 21656 DAS PACTTMP
042098,000175:
042099,000176: 16,3161 00006 EXTEND # YAW TMC LOOP
042100,000177: 16,3162 31610 DCA YDELOFF
042101,000178: 16,3163 53660 DXCH YACTTMP
042102,000179: 16,3164 00006 EXTEND
042103,000180: 16,3165 41610 DCS YDELOFF
042104,000181: 16,3166 20001 DDOUBL
042105,000182: 16,3167 20001 DDOUBL
042106,000183: 16,3170 53612 DXCH TTMP1
042107,000184: 16,3171 00006 EXTEND
042108,000185: 16,3172 31604 DCA DELYBAR
042109,000186: 16,3173 20001 DDOUBL
042110,000187: 16,3174 20001 DDOUBL
042111,000188: 16,3175 21612 DAS TTMP1
042112,000189: 16,3176 00006 EXTEND
042113,000190: 16,3177 31612 DCA TTMP1
042114,000191: 16,3200 00006 EXTEND
042115,000192: 16,3201 71444 MP TEMPDAP
042116,000193: 16,3202 21660 DAS YACTTMP
042117,000194:
042118,000195: 16,3203 25644 CORCOPY INCR TVCEXPHS # RESTART PROTECT THE COPYCYCLE (3)
042119,000196: 16,3204 00006 EXTEND # TRIM-ESTIMATES, AND
042120,000197: 16,3205 31656 DCA PACTTMP
042121,000198: 16,3206 55423 TS PACTOFF # TRIMS
042122,000199: 16,3207 53606 DXCH PDELOFF
042123,000200:
042124,000201: 16,3210 00006 EXTEND
042125,000202: 16,3211 31660 DCA YACTTMP
042126,000203: 16,3212 55424 TS YACTOFF
042127,000204: 16,3213 53610 DXCH YDELOFF
042128,000205:
042129,000206: 16,3214 25644 INCR TVCEXPHS # ENTRY FROM 1SHOTCHK AT NEXT LOCATION (4)
042130,000207: 16,3215 31661 CNTRCOPY CAE CNTRTMP # UPDATE CNTR (RESTARTS OK, FOLLOWS CPYCY)
042131,000208: 16,3216 55446 TS CNTR
042132,000209:
042133,000210: 16,3217 34772 TVCEXFIN CAF ZERO # RESET TVCEXPHS
042134,000211: 16,3220 55644 TS TVCEXPHS
042135,000212: 16,3221 15314 TCF TASKOVER # TVCEXECUTIVE FINISHED
042136,000213:
042137,000214:
042138,000215: 16,3222 4754 FCORFRAC = BIT13 # ONE-SHOT CORRECTION FRACTION
End of include-file TVCEXECUTIVE.agc. Parent file is MAIN.agc