Source Code
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This is an attempt to recreate Luminary 99 Rev 2, otherwise known as LUM99R2, from Luminary 99 Rev 1 and ephemeris data from Luminary 116. The differences are confined to the last 10-12 lines of the CONTROLLED CONSTANTS. Luminary 99 Rev 1 source-code was transcribed from a printout in the MIT Museum, while Luminary 116 source code was transcribed from a printout belonging to Don Eyles. AGC developer James Kernan, the "rope mother" for the Apollo 11 Lunar Module's AGC, explains as follows: "At the last minute, Dan Lickly, our chief engineer, appeared with ephemerides updates and it took two tries to get it right. The result was that we created Lum99 Revision 1 and Lum99 Revision 2." It is suspected that the former is what's in the MIT Museum, and the latter is what we are trying to recreate here. As for which revision actually flew in Apollo 11, all of the other available surviving evidence points to Rev 1 rather than to Rev 2, so we're just not sure! |
035903,000002: ## Copyright: Public domain.
035904,000003: ## Filename: P12.agc
035905,000004: ## Purpose: Part of the source code for Luminary 1A build 099.
035906,000005: ## It is part of the source code for the Lunar Module's (LM)
035907,000006: ## Apollo Guidance Computer (AGC), for Apollo 11.
035908,000007: ## Assembler: yaYUL
035909,000008: ## Contact: Hartmuth Gutsche <hgutsche@xplornet.com>.
035910,000009: ## Website: www.ibiblio.org/apollo.
035911,000010: ## Pages: 838-842
035912,000011: ## Mod history: 2009-05-23 HG Transcribed from page images.
035913,000012: ## 2016-12-13 RSB GOTOP00H -> GOTOPOOH
035914,000013: ## 2016-12-17 RSB Proofed text comments with octopus/ProoferComments
035915,000014: ## and corrected the errors found.
035916,000015: ## 2017-01-28 RSB Back-ported a comment fix from Luminary 69.
035917,000016: ## 2017-03-03 RSB Snapshot of Luminary 99 Rev 1.
035918,000017:
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Page 838 |
035920,000019: 24,3670 BANK 24
035921,000020: 30,2000 SETLOC P12
035922,000021: 30,2000 BANK
035923,000022:
035924,000023: 30,2061 E7,1515 EBANK= DVCNTR
035925,000024: 30,2061 COUNT* $$/P12
035926,000025:
035927,000026: 30,2061 05353 P12LM TC PHASCHNG
035928,000027: 30,2062 04024 OCT 04024
035929,000028:
035930,000029: 30,2063 04616 TC BANKCALL
035931,000030: 30,2064 11254 CADR R02BOTH # CHECK THE STATUS OF THE IMU.
035932,000031:
035933,000032: 30,2065 05504 TC UPFLAG
035934,000033: 30,2066 00141 ADRES MUNFLAG
035935,000034:
035936,000035: 30,2067 05504 TC UPFLAG # INSURE 4-JET TRANSLATION CAPABILITY.
035937,000036: 30,2070 00307 ADRES ACC4-2FL
035938,000037:
035939,000038: 30,2071 05504 TC UPFLAG # PREVENT R10 FROM ISSUING CROSS-POINTER
035940,000039: 30,2072 00015 ADRES R10FLAG # OUTPUTS.
035941,000040:
035942,000041: 30,2073 06011 TC CLRADMOD # INITIALIZE RADMODES FOR R29.
035943,000042:
035944,000043: 30,2074 05516 TC DOWNFLAG # CLEAR RENDEZVOUS FLAG FOR P22
035945,000044: 30,2075 00010 ADRES RNDVZFLG
035946,000045:
035947,000046: 30,2076 36000 CAF THRESH2 # INITIALIZE DVMON
035948,000047: 30,2077 55251 TS DVTHRUSH
035949,000048: 30,2100 34751 CAF FOUR
035950,000049: 30,2101 55515 TS DVCNTR
035951,000050:
035952,000051: 30,2102 34755 CA ZERO
035953,000052: 30,2103 55462 TS TRKMKCNT # SHOW THAT R29 DOWNLINK DATA ISN'T READY.
035954,000053: 30,2104 33035 CAF V06N33A
035955,000054: 30,2105 04616 TC BANKCALL # FLASH TIG
035956,000055: 30,2106 20476 CADR GOFLASH
035957,000056: 30,2107 16001 TCF GOTOPOOH
035958,000057: 30,2110 12112 TCF +2 # PROCEED
035959,000058: 30,2111 12104 TCF -5 # ENTER
035960,000059:
035961,000060: 30,2112 05353 TC PHASCHNG
035962,000061: 30,2113 04024 OCT 04024
035963,000062:
035964,000063: 30,2114 06037 TC INTPRET
035965,000064: 30,2115 77624 CALL # INITIALIZE WM AND /LAND/
035966,000065: 30,2116 46432 GUIDINIT
035967,000066: 30,2117 45014 SET CALL
035968,000067: 30,2120 04464 FLPI
035969,000068: 30,2121 60254 P12INIT
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Page 839 |
035971,000070: 30,2122 77745 P12LMB DLOAD
035972,000071: 30,2123 25761 (TGO)A # SET TGO TO AN INITIAL NOMINAL VALUE.
035973,000072: 30,2124 17517 STODL TGO
035974,000073: 30,2125 03442 TIG
035975,000074: 30,2126 34041 STCALL TDEC1
035976,000075: 30,2127 27057 LEMPREC # ROTATE THE STATE VECTORS TO THE
035977,000076: 30,2130 64375 VLOAD MXV # IGNITION TIME.
035978,000077: 30,2131 00007 VATT
035979,000078: 30,2132 01734 REFSMMAT
035980,000079: 30,2133 77772 VSL1
035981,000080: 30,2134 27601 STOVL V1S # COMPUTE V1S = VEL(TIG)*2(-7) M/CS.
035982,000081: 30,2135 00001 RATT
035983,000082: 30,2136 52521 MXV VSL6
035984,000083: 30,2137 01734 REFSMMAT
035985,000084: 30,2140 37521 STCALL R # COMPUTE R = POS(TIG)*2(-24) M.
035986,000085: 30,2141 67130 MUNGRAV # COMPUTE GDT1/2(TIG)*2(-7)M/CS.
035987,000086: 30,2142 53575 VLOAD UNIT
035988,000087: 30,2143 03521 R
035989,000088: 30,2144 37537 STCALL UNIT/R/ # COMPUTE UNIT/R/ FOR YCOMP.
035990,000089: 30,2145 57312 YCOMP
035991,000090: 30,2146 57461 SR DCOMP
035992,000091: 30,2147 20606 5D
035993,000092: 30,2150 17643 STODL XRANGE # INITIALIZE XRANGE FOR NOUN 76.
035994,000093: 30,2151 06456 VINJNOM
035995,000094: 30,2152 16277 STODL ZDOTD
035996,000095: 30,2153 06460 RDOTDNOM
035997,000096: 30,2154 02273 STORE RDOTD
035998,000097: 30,2155 77776 EXIT
035999,000098:
036000,000099: 30,2156 05353 TC PHASCHNG
036001,000100: 30,2157 04024 OCT 04024
036002,000101:
036003,000102: 30,2160 33034 NEWLOAD CAF V06N76 # FLASH CROSS-RANGE AND APOLUNE VALUES.
036004,000103: 30,2161 04616 TC BANKCALL
036005,000104: 30,2162 20476 CADR GOFLASH
036006,000105: 30,2163 16001 TCF GOTOPOOH
036007,000106: 30,2164 12166 TCF +2 # PROCEED
036008,000107: 30,2165 12160 TCF NEWLOAD # ENTER NEW DATA.
036009,000108:
036010,000109: 30,2166 32320 CAF P12ADRES
036011,000110: 30,2167 55455 TS WHICH
036012,000111:
036013,000112: 30,2170 05353 TC PHASCHNG
036014,000113: 30,2171 04024 OCT 04024
036015,000114:
036016,000115: 30,2172 06037 TC INTPRET
036017,000116: 30,2173 54345 DLOAD SL
036018,000117: 30,2174 03643 XRANGE
036019,000118: 30,2175 20206 5D
036020,000119: 30,2176 77615 DAD
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Page 840 |
036022,000121: 30,2177 02335 Y
036023,000122: 30,2200 27633 STOVL YCO
036024,000123: 30,2201 03537 UNIT/R/
036025,000124: 30,2202 53361 VXSC VAD
036026,000125: 30,2203 06454 49FPS
036027,000126: 30,2204 03601 V1S
036028,000127: 30,2205 03527 STORE V # V(TIPOVER) = V(IGN) + 57FPS (UNIT/R/)
036029,000128: 30,2206 72441 DOT SL1
036030,000129: 30,2207 03537 UNIT/R/
036031,000130: 30,2210 27474 STOVL RDOT # RDOT = 2(-7)
036032,000131: 30,2211 03537 UNIT/R/
036033,000132: 30,2212 53435 VXV UNIT
036034,000133: 30,2213 03720 QAXIS
036035,000134: 30,2214 03726 STORE ZAXIS1
036036,000135: 30,2215 77614 SETGO
036037,000136: 30,2216 04421 FLVR
036038,000137: 30,2217 60321 ASCENT
036039,000138: 30,2220 77745 P12RET DLOAD
036040,000139: 30,2221 02361 ATP # ATP(2)*2(18)
036041,000140: 30,2222 65316 DSQ PDDL
036042,000141: 30,2223 02355 ATY # ATY(2)*2(18)
036043,000142: 30,2224 43316 DSQ DAD
036044,000143: 30,2225 75454 BZE SQRT
036045,000144: 30,2226 60232 YAWDUN
036046,000145: 30,2227 55352 SL1 BDDV
036047,000146: 30,2230 02355 ATY
036048,000147: 30,2231 77736 ARCSIN
036049,000148: 30,2232 26363 YAWDUN STOVL YAW
036050,000149: 30,2233 03254 UNFC/2
036051,000150: 30,2234 50256 UNIT DOT
036052,000151: 30,2235 03537 UNIT/R/
036053,000152: 30,2236 65552 SL1 ARCCOS
036054,000153: 30,2237 77676 DCOMP
036055,000154: 30,2240 02365 STORE PITCH
036056,000155: 30,2241 77776 EXIT
036057,000156: 30,2242 05353 TC PHASCHNG
036058,000157: 30,2243 04024 OCT 04024
036059,000158:
036060,000159: 30,2244 05516 TC DOWNFLAG
036061,000160: 30,2245 00213 ADRES FLPI
036062,000161:
036063,000162: 30,2246 00004 INHINT
036064,000163: 30,2247 04674 TC IBNKCALL
036065,000164: 30,2250 40142 CADR PFLITEDB
036066,000165: 30,2251 00003 RELINT
036067,000166:
036068,000167: 30,2252 04635 TC POSTJUMP
036069,000168: 30,2253 74126 CADR BURNBABY
036070,000169:
036071,000170: 30,2254 77745 P12INIT DLOAD # INITIALIZE ENGINE DATA. USED FOR P12 AND
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Page 841 |
036073,000172: 30,2255 16013 (1/DV)A # P71.
036074,000173: 30,2256 03641 STORE 1/DV3
036075,000174: 30,2257 03637 STORE 1/DV2
036076,000175: 30,2260 17635 STODL 1/DV1
036077,000176: 30,2261 16017 (AT)A
036078,000177: 30,2262 16263 STODL AT
036079,000178: 30,2263 16021 (TBUP)A
036080,000179: 30,2264 16271 STODL TBUP
036081,000180: 30,2265 34013 ATDECAY
036082,000181: 30,2266 54276 DCOMP SL
036083,000182: 30,2267 20214 11D
036084,000183: 30,2270 02267 STORE TTO
036085,000184: 30,2271 57535 SLOAD DCOMP
036086,000185: 30,2272 26001 APSVEX
036087,000186: 30,2273 77702 SR2
036088,000187: 30,2274 02265 STORE VE
036089,000188: 30,2275 43414 BOFF RVQ
036090,000189: 30,2276 04747 FLAP
036091,000190: 30,2277 60300 COMMINIT
036092,000191: 30,2300 43345 COMMINIT DLOAD DAD # INITIALIZE TARGET DATA. USED BY P12, P70
036093,000192: 30,2301 25757 HINJECT # AND P71 IF IT DOES NOT FOLLOW P70.
036094,000193: 30,2302 02333 /LAND/
036095,000194: 30,2303 17631 STODL RCO
036096,000195: 30,2304 06522 HI6ZEROS
036097,000196: 30,2305 03654 STORE TXO
036098,000197: 30,2306 03633 STORE YCO
036099,000198: 30,2307 02273 STORE RDOTD
036100,000199: 30,2310 26275 STOVL YDOTD
036101,000200: 30,2311 01563 VRECTCSM
036102,000201: 30,2312 64235 VXV MXV
036103,000202: 30,2313 01555 RRECTCSM
036104,000203: 30,2314 01734 REFSMMAT
036105,000204: 30,2315 77656 UNIT
036106,000205: 30,2316 03720 STORE QAXIS
036107,000206: 30,2317 77616 RVQ
036108,000207: 30,2320 02022 P12ADRES REMADR P12TABLE
036109,000208:
036110,000209: 23,2000 SETLOC P12A
036111,000210: 23,2000 BANK
036112,000211: 23,2432 COUNT* $$/P12
036113,000212:
036114,000213: 23,2432 40220 GUIDINIT STQ SETPD
036115,000214: 23,2433 01164 TEMPR60
036116,000215: 23,2434 00001 0D
036117,000216: 23,2435 41575 VLOAD PUSH
036118,000217: 23,2436 06514 UNITZ
036119,000218: 23,2437 41434 RTB PUSH
036120,000219: 23,2440 21573 LOADTIME
036121,000220: 23,2441 77624 CALL
036122,000221: 23,2442 55716 RP-TO-R
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Page 842 |
036124,000223: 23,2443 74321 MXV VXSC
036125,000224: 23,2444 01734 REFSMMAT
036126,000225: 23,2445 16027 MOONRATE
036127,000226: 23,2446 26325 STOVL WM
036128,000227: 23,2447 02023 RLS
036129,000228: 23,2450 52446 ABVAL SL3
036130,000229: 23,2451 36333 STCALL /LAND/
036131,000230: 23,2452 01164 TEMPR60
036132,000231:
036133,000232: 23,2453 00046 07374 49FPS 2DEC .149352 B-6 # EXPECTED RDOT AT TIPOVER
036134,000233: 23,2455 04145 15527 VINJNOM 2DEC 16.7924 B-7 # 5509.5 FPS(APO=30NM WITH RDOT=19.5FPS)
036135,000234: 23,2457 00007 23346 RDOTDNOM 2DEC .059436 B-7 # 19.5 FPS
036136,000235:
036137,000236:
End of include-file P12.agc. Parent file is MAIN.agc