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. |
041915,000002: ## Copyright: Public domain.
041916,000003: ## Filename: TVCEXECUTIVE.agc
041917,000004: ## Purpose: Part of the source code for Artemis (i.e., Colossus 3),
041918,000005: ## build 072. This is for the Command Module's (CM)
041919,000006: ## Apollo Guidance Computer (AGC), for
041920,000007: ## Apollo 15-17.
041921,000008: ## Assembler: yaYUL
041922,000009: ## Contact: Steve Case <case1780@adelphia.net>
041923,000010: ## Website: www.ibiblio.org/apollo/index.html
041924,000011: ## Page Scans: www.ibiblio.org/apollo/ScansForConversion/Artemis072/
041925,000012: ## Mod history: 2009-09-13 SMC Adapted from Comanche055 files.
041926,000013: ## 2009-09-14 JL Fix typos. Fix page numbers. Remove change comments. Restore hard tabs.
041927,000014: ## 2010-02-20 RSB Un-##'d this header.
041928,000015: ## 2017-01-28 RSB WTIH -> WITH.
041929,000016: ## 2017-02-09 RSB Proofed comment text by diff'ing vs Comanche 55
041930,000017: ## and/or octopus/ProoferComments as most-appropriate.
041931,000018:
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Page 950 |
041933,000020: # PROGRAM NAME.... TVCEXECUTIVE, CONSISTING OF TVCEXEC, NEEDLEUP, VARGAINS
041934,000021: # 1SHOTCHK, REPCHEK, CG.CORR, COPYCYCLES, ETC.
041935,000022: # LOG SECTION...TVCEXECUTIVE SUBROUTINE...DAPCSM
041936,000023: # MODIFIED BY SCHLUNDT 21 OCTOBER 1968
041937,000024: # MODIFIED BY BEALS TO ELIMINATE CSMMASS UPDATE LOGIC (NOW DONE IN S40.8)
041938,000025: # FUNCTIONAL DESCRIPTION....
041939,000026:
041940,000027: # *A SELF-PERPETUATING WAITLIST TASK AT 1/2 SECOND INTERVALS WHICH:
041941,000028: # PREPARES THE ROLL DAP WITH OGA (CDUX)
041942,000029: # PREPARES THE ROLL FDAI NEEDLE (FLY-TO OGA ERROR)
041943,000030: # PREPARES THE ROLL PHASE PLANE OGAERR (FLY-FROM OGA ERROR)
041944,000031: # PREPARES THE TVC ROLLDAP TASK WAITLIST CALL (3 CS DELAY)
041945,000032: # UPDATES THE NEEDLES DISPLAY
041946,000033: # CALLS MASSPROP TO UPDATE INERTIA DATA
041947,000034: # UPDATES PITCH, YAW, AND ROLL DAP GAINS FROM MASSPROP DATA
041948,000035: # PERFORMS ONE-SHOT CORRECTION FOR TMC LOOP 0-3 SEC AFTER IGNITION
041949,000036: # PERFORMS REPETITIVE UPDATES FOR TMC LOOP AFTER THE ONE-SHOT CORR.
041950,000037:
041951,000038: # CALLING SEQUENCE....
041952,000039:
041953,000040: # *TVCEXEC CALLED AS A WAITLIST TASK, IN PARTICULAR BY TVCINIT4 AND BY
041954,000041: # ITSELF, BOTH AT 1/2 SECOND INTERVALS
041955,000042:
041956,000043: # NORMAL EXIT MODE.... TASKOVER
041957,000044:
041958,000045: # ALARM OR ABORT EXIT MODES.... NONE
041959,000046:
041960,000047: # SUBROUTINES CALLED....NEEDLER, S40.15, MASSPROP, TASKOVER, IBNKCALL
041961,000048:
041962,000049: # OTHER INTERFACES....
041963,000050:
041964,000051: # *TVCRESTART PACKAGE FOR RESTARTS
041965,000052: # *PITCHDAP, YAWDAP FOR VARIABLE GAINS AND ENGINE TRIM ANGLES
041966,000053: # ERASABLE INITIALIZATION REQUIRED....
041967,000054:
041968,000055: # *SEE TVCDAPON....TVCINIT4
041969,000056: # *VARK AND 1/CONACC (S40.15 OF TVCINITIALIZE)
041970,000057: # *PAD LOAD EREPFRAC
041971,000058: # *BITS 15,14 OF FLAGWRD6 (T5 BITS)
041972,000059: # *TVCEXPHS FOR RESTARTS
041973,000060: # *ENGINE-ON BIT (11.13) FOR RESTARTS
041974,000061: # *CDUX, OGAD
041975,000062:
041976,000063: # OUTPUT....
041977,000064:
041978,000065: # *ROLL DAP OGANOW, FDAI NEEDLE (AK). AND PHASE PLANE OGAERR
041979,000066: # *VARIABLE GAINS FOR PITCH/YAW AND ROLL TVC DAPS
041980,000067: # *SINGLE-SHOT AND REPETITIVE CORRECTIONS TO ENGINE TRIM ANGLES
041981,000068: # PACTOFF AND YACTOFF
041982,000069: # DEBRIS.... MUCH, BUT SHAREABLE WITH RCS/ENTRY, ALL IN EBANK6
041983,000070:
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Page 951 |
041985,000072: 16,2000 SETLOC DAPROLL
041986,000073: 16,2000 BANK
041987,000074: 16,3037 E6,1446 EBANK= CNTR
041988,000075: 16,3037 COUNT* $$/TVCX
041989,000076:
041990,000077:
041991,000078: 16,3037 40102 TVCEXEC CS FLAGWRD6 # CHECK FOR TERMINATION (BITS 15,14 READ
041992,000079: 16,3040 74076 MASK DPCONFIG # 10 FROM TVCDAPON TO RCSDAPON
041993,000080: 16,3041 00006 EXTEND
041994,000081: 16,3042 63217 BZMF TVCEXFIN # TERMINATE
041995,000082:
041996,000083: 16,3043 35011 CAF .5SEC # W.L. CALL TO PERPETUATE TVCEXEC
041997,000084: 16,3044 05223 TC TWIDDLE
041998,000085: 16,3045 03037 ADRES TVCEXEC
041999,000086: 16,3046 30032 ROLLPREP CAE CDUX # UPDATE ROLL LADDERS (NO NEED TO RESTART-
042000,000087: 16,3047 57645 XCH OGANOW # PROTECT, SINCE ROLL DAPS RE-START)
042001,000088: 16,3050 57646 XCH OGAPAST
042002,000089:
042003,000090: 16,3051 31447 CAE OGAD # PREPARE ROLL FDAI NEEDLE WITH FLY-TO
042004,000091: 16,3052 00006 EXTEND # ERROR (COMMAND - MEASURED)
042005,000092: 16,3053 21645 MSU OGANOW
042006,000093: 16,3054 55476 TS AK # FLY-TO OGA ERROR, SC.AT B-1 REVS
042007,000094:
042008,000095: 16,3055 00006 EXTEND # PREPARE ROLL DAP PHASE PLANE OGAERR
042009,000096: 16,3056 74751 MP -BIT14
042010,000097: 16,3057 55647 TS OGAERR # PHASE-PLANE (FLY-FROM) OGAERROR,
042011,000098: # SC.AT B+0 REVS
042012,000099:
042013,000100: 16,3060 36214 CAF THREE # SET UP ROLL DAP TASK (ALLOW SOME TIME)
042014,000101: 16,3061 05223 TC TWIDDLE
042015,000102: 16,3062 03342 ADRES ROLLDAP
042016,000103: 16,3063 04714 NEEDLEUP TC IBNKCALL # DO A NEEDLES UPDATE (RETURNS AFTER CADR)
042017,000104: 16,3064 42425 CADR NEEDLER # (NEEDLES RESTARTS ITSELF)
042018,000105:
042019,000106: 16,3065 11634 VARGAINS CCS VCNTR # TEST FOR GAIN UPDATE TIME
042020,000107: 16,3066 13074 TCF EXECCOPY # NOT YET
042021,000108: 16,3067 04714 GAINCHNG TC IBNKCALL # UPDATE IXX, IAVG, IAVG/TLX
042022,000109: 16,3070 13347 CADR FIXCW # MASSPROP ENTRY (ALREADY INITIALIZED)
042023,000110: 16,3071 04714 TC IBNKCALL # UPDATE 1/CONACC, VARK
042024,000111: 16,3072 36452 CADR S40.15 # (S40.15 IS IN TVCINITIALIZE)
042025,000112: 16,3073 34351 CAF NINETEEN # RESET THE VARIABLE-GAIN UPDATE COUNTER
042026,000113: 16,3074 55634 EXECCOPY TS VCNTR
042027,000114: 16,3075 11446 1SHOTCHK CCS CNTR # CHECK TIME FOR ONE-SHOT OR REPCORR
042028,000115: 16,3076 13102 TCF +4 # NOT YET
042029,000116: 16,3077 13115 TCF 1SHOTOK # NOW
042030,000117: 16,3100 13106 TCF REPCHEK # ONE-SHOT OVER, ON TO REPCORR
042031,000118: 16,3101 13115 TCF 1SHOTOK # NOW (ONE-SHOT ONLY, NO REPCORR)
042032,000119:
042033,000120: 16,3102 55661 +4 TS CNTRTMP # COUNT DOWN
042034,000121: 16,3103 34766 CAF FOUR # SET UP TVCEXPHS FOR ENTRY AT CNTRCOPY
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042036,000123: 16,3104 55644 TS TVCEXPHS
042037,000124: 16,3105 13215 TCF CNTRCOPY
042038,000125:
042039,000126: 16,3106 31633 REPCHEK CAE REPFRAC # CHECK FOR REPETITIVE UPDATES
042040,000127: 16,3107 00006 EXTEND
042041,000128: 16,3110 63217 BZMF TVCEXFIN # NO, OVER-AND-OUT
042042,000129: 16,3111 55445 TS TEMPDAP +1 # YES, SET UP CORRECTION FRACTION
042043,000130: 16,3112 34767 CAF TWO # SET UP TVCEXPHS FOR ENTRY AT CORSETUP
042044,000131: 16,3113 55644 TS TVCEXPHS
042045,000132: 16,3114 13126 TCF CORSETUP
042046,000133:
042047,000134: 16,3115 34762 1SHOTOK CAF ENGONBIT
042048,000135: 16,3116 70101 MASK FLAGWRD5
042049,000136: 16,3117 10000 CCS A
042050,000137: 16,3120 13122 TCF +2 # ONE-SHOT OK
042051,000138: 16,3121 13217 TCF TVCEXFIN # NO, TERMINATE
042052,000139:
042053,000140: 16,3122 25644 INCR TVCEXPHS # (1)
042054,000141: 16,3123 34754 TEMPSET CAF FCORFRAC # SET UP CORRECTION FRACTION
042055,000142: 16,3124 55445 TS TEMPDAP +1
042056,000143:
042057,000144: 16,3125 25644 INCR TVCEXPHS # ENTRY FROM REPCHECK AT NEXT LOCATION (2)
042058,000145: 16,3126 31465 CORSETUP CAE DAPDATR1 # CHECK FOR LEM-OFF/ON
042059,000146: 16,3127 74754 MASK BIT13 # (NOTE, SHOWS LEM-OFF)
042060,000147: 16,3130 00006 EXTEND
042061,000148: 16,3131 13133 BZF +2 # LEM IS ON, PICK UP TEMPDAP+1
042062,000149: 16,3132 31445 CAE TEMPDAP +1 # LEM IS OFF, PICK UP 2(TEMPDAP+1)
042063,000150: 16,3133 61445 AD TEMPDAP +1
042064,000151: 16,3134 55444 TS TEMPDAP # CG.CORR USES TEMPDAP
042065,000152:
042066,000153: 16,3135 37702 CAF NEGONE # SET UP FOR CNTR = -1 (ONE-SHOT DONE)
042067,000154: 16,3136 55661 TS CNTRTMP # (COPYCYCLE AT .CNTRCOPY.)
042068,000155:
042069,000156: 16,3137 00006 CG.CORR EXTEND # PITCH TMC LOOP
042070,000157: 16,3140 31606 DCA PDELOFF
042071,000158: 16,3141 53656 DXCH PACTTMP
042072,000159: 16,3142 00006 EXTEND
042073,000160: 16,3143 41606 DCS PDELOFF
042074,000161: 16,3144 20001 DDOUBL
042075,000162: 16,3145 20001 DDOUBL
042076,000163: 16,3146 53612 DXCH TTMP1
042077,000164: 16,3147 00006 EXTEND
042078,000165: 16,3150 31602 DCA DELPBAR
042079,000166: 16,3151 20001 DDOUBL
042080,000167: 16,3152 20001 DDOUBL
042081,000168: 16,3153 21612 DAS TTMP1
042082,000169: 16,3154 00006 EXTEND
042083,000170: 16,3155 31612 DCA TTMP1
042084,000171: 16,3156 00006 EXTEND
042085,000172: 16,3157 71444 MP TEMPDAP
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042087,000174: 16,3160 21656 DAS PACTTMP
042088,000175:
042089,000176: 16,3161 00006 EXTEND # YAW TMC LOOP
042090,000177: 16,3162 31610 DCA YDELOFF
042091,000178: 16,3163 53660 DXCH YACTTMP
042092,000179: 16,3164 00006 EXTEND
042093,000180: 16,3165 41610 DCS YDELOFF
042094,000181: 16,3166 20001 DDOUBL
042095,000182: 16,3167 20001 DDOUBL
042096,000183: 16,3170 53612 DXCH TTMP1
042097,000184: 16,3171 00006 EXTEND
042098,000185: 16,3172 31604 DCA DELYBAR
042099,000186: 16,3173 20001 DDOUBL
042100,000187: 16,3174 20001 DDOUBL
042101,000188: 16,3175 21612 DAS TTMP1
042102,000189: 16,3176 00006 EXTEND
042103,000190: 16,3177 31612 DCA TTMP1
042104,000191: 16,3200 00006 EXTEND
042105,000192: 16,3201 71444 MP TEMPDAP
042106,000193: 16,3202 21660 DAS YACTTMP
042107,000194:
042108,000195: 16,3203 25644 CORCOPY INCR TVCEXPHS # RESTART PROTECT THE COPYCYCLE (3)
042109,000196: 16,3204 00006 EXTEND # TRIM-ESTIMATES, AND
042110,000197: 16,3205 31656 DCA PACTTMP
042111,000198: 16,3206 55423 TS PACTOFF # TRIMS
042112,000199: 16,3207 53606 DXCH PDELOFF
042113,000200:
042114,000201: 16,3210 00006 EXTEND
042115,000202: 16,3211 31660 DCA YACTTMP
042116,000203: 16,3212 55424 TS YACTOFF
042117,000204: 16,3213 53610 DXCH YDELOFF
042118,000205:
042119,000206: 16,3214 25644 INCR TVCEXPHS # ENTRY FROM 1SHOTCHK AT NEXT LOCATION (4)
042120,000207: 16,3215 31661 CNTRCOPY CAE CNTRTMP # UPDATE CNTR (RESTARTS OK, FOLLOWS CPYCY)
042121,000208: 16,3216 55446 TS CNTR
042122,000209:
042123,000210: 16,3217 34772 TVCEXFIN CAF ZERO # RESET TVCEXPHS
042124,000211: 16,3220 55644 TS TVCEXPHS
042125,000212: 16,3221 15314 TCF TASKOVER # TVCEXECUTIVE FINISHED
042126,000213:
042127,000214:
042128,000215: 16,3222 4754 FCORFRAC = BIT13 # ONE-SHOT CORRECTION FRACTION
End of include-file TVCEXECUTIVE.agc. Parent file is MAIN.agc