Source Code
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These source-code files were transcribed from scans made from Don Eyles's personal
copy of Luminary 069. They were scanned at archive.org's Boston
facility, and the scanning was sponsored by Onno Hommes. The code was transcribed
from these scans by a team of volunteers who are referenced in the program
comments. Comments from the original source code are prefixed with a single '#' symbol,
whereas comments added later are prefixed by "##" or "###". In some cases, where
similar code blocks exist in previously-transcribed AGC programs (primarily
Luminary 99, from Apollo 11) those code blocks were used as a starting point and
then corrected to agree with the Luminary 69 scans. The full scans are available
at the Virtual AGC
project's collection at archive.org, while more-convenient reduced-size (but reduced-quality)
images are available at
the main Virtual AGC website. Report any errors noted by creating an
issue report at the Virtual AGC
project's GitHub repository. Notations on the program listing read, in part:
GAP: ASSEMBLE REVISION 069 OF AGC PROGRAM LUMINARY BY NASA 2021112-011
19:02 NOV. 25,1968
Note that the date is the date of the printout, not the date of the program revision.
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027344,000002: ## Copyright: Public domain.
027345,000003: ## Filename: P30,P37.agc
027346,000004: ## Purpose: The main source file for Luminary revision 069.
027347,000005: ## It is part of the source code for the original release
027348,000006: ## of the flight software for the Lunar Module's (LM) Apollo
027349,000007: ## Guidance Computer (AGC) for Apollo 10. The actual flown
027350,000008: ## version was Luminary 69 revision 2, which included a
027351,000009: ## newer lunar gravity model and only affected module 2.
027352,000010: ## This file is intended to be a faithful transcription, except
027353,000011: ## that the code format has been changed to conform to the
027354,000012: ## requirements of the yaYUL assembler rather than the
027355,000013: ## original YUL assembler.
027356,000014: ## Reference: pp. 624-627
027357,000015: ## Assembler: yaYUL
027358,000016: ## Contact: Ron Burkey <info@sandroid.org>.
027359,000017: ## Website: www.ibiblio.org/apollo/index.html
027360,000018: ## Mod history: 2016-12-13 MAS Created from Luminary 99.
027361,000019: ## 2016-12-14 MAS Updated from comment-proofed Luminary 99 version.
027362,000020: ## 2016-12-17 RRB Updated for Luminary 69.
027363,000021: ## 2017-01-27 RSB Proofed comment text using octopus/prooferComments
027364,000022: ## but no errors found.
027365,000023:
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Page 624
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027367,000025: # PROGRAM DESCRIPTION P30 DATE 3-6-67
027368,000026:
027369,000027: # MOD.1 BY RAMA AIYAWAR
027370,000028: # FUNCTIONAL DESCRIPTION
027371,000029: # ACCEPT ASTRONAUT INPUTS OF TIG,DELV(LV)
027372,000030: # CALL IMU STATUS CHECK ROUTINE (R02)
027373,000031: # DISPLAY TIME TO GO, APOGEE, PERIGEE, DELV(MAG), MGA AT IGN
027374,000032: # REQUEST BURN PROGRAM
027375,000033:
027376,000034: # CALLING SEQUENCE VIA JOB FROM V37
027377,000035:
027378,000036: # EXIT VIA V37 CALL OR TO GOTOPOOH (V34E)
027379,000037:
027380,000038: # SUBROUTINE CALLS - FLAGUP, PHASCHNG, BANKCALL, ENDOFJOB, GOFLASH, GOFLASHR
027381,000039: # GOPERF3R, INTPRET, BLANKET, GOTOPOOH, R02BOTH, S30.1,
027382,000040: # TTG/N35, MIDGIM, DISPMGA
027383,000041:
027384,000042: # ERASABLE INITIALIZATION - STATE VECTOR
027385,000043:
027386,000044: # OUTPUT-RINIT, VINIT, +MGA, VTIG, RTIG, DELVSIN, DELVSAB, DELVSLV, HAPO,
027387,000045: # HPER, TTOGO
027388,000046:
027389,000047: # DEBRIS- A,L, MPAC, PUSHLIST
027390,000048:
027391,000049: 32,2772 BANK 32
027392,000050: 35,2000 SETLOC P30S
027393,000051: 35,2000 BANK
027394,000052: 35,2000 E4,1656 EBANK= +MGA
027395,000053: 35,2000 COUNT* $$/P30
027396,000054: 35,2000 05504 P30 TC UPFLAG # SET UPDATE FLAG
027397,000055: 35,2001 00027 ADRES UPDATFLG
027398,000056: 35,2002 05504 TC UPFLAG # SET TRACK FLAG
027399,000057: 35,2003 00031 ADRES TRACKFLG
027400,000058:
027401,000059: 35,2004 32025 P30N33 CAF V06N33 # T OF IGN
027402,000060: 35,2005 03651 TC VNPOOH # RETURNS ON PROCEED, POOH ON TERMINATE
027403,000061:
027404,000062: 35,2006 33666 CAF V06N81 # DISPLAY DELTA V (LV)
027405,000063: 35,2007 03651 TC VNPOOH # REDISPLAY ON RECYCLE
027406,000064:
027407,000065: 35,2010 05516 TC DOWNFLAG # RESET UPDATE FLAG
027408,000066: 35,2011 00027 ADRES UPDATFLG
027409,000067: 35,2012 06036 TC INTPRET
027410,000068: 35,2013 77624 CALL
027411,000069: 35,2014 70000 S30.1
027412,000070: 35,2015 77414 SET EXIT
027413,000071: 35,2016 00470 UPDATFLG
027414,000072: 35,2017 32026 PARAM30 CAF V06N42 # DISPLAY APOGEE,PERIGEE ,DELTA V
027415,000073: 35,2020 03651 TC VNPOOH
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Page 625
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027417,000075:
027418,000076: 35,2021 06036 TC INTPRET
027419,000077: 35,2022 77614 SETGO
027420,000078: 35,2023 01027 XDELVFLG # FOR P40'S: EXTERNAL DELTA-V GUIDANCE.
027421,000079: 35,2024 72504 REVN1645 # TRKMKCNT, TGO, +MGA DISPLAY
027422,000080:
027423,000081: 35,2025 01441 V06N33 VN 0633
027424,000082: 35,2026 01452 V06N42 VN 0642
027425,000083:
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Page 626
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027427,000085: # PROGRAM DESCRIPTION S30.1 DATE 9NOV66
027428,000086:
027429,000087: # MOD NO 1 LOG SECTION P30,P37
027430,000088: # MOD BY RAMA AIYAWAR **
027431,000089:
027432,000090: # FUNCTIONAL DESCRIPTION
027433,000091: # BASED ON STORED TARGET PARAMETERS(R OF IGNITION (RTIG), V OF
027434,000092: # IGNITION(VTIG), TIME OF IGNITION (TIG)),COMPUTE PERIGEE ALTITUDE
027435,000093: # APOGEE ALTITUDE AND DELTAV REQUIRED(DELVSIN).
027436,000094:
027437,000095: # CALLING SEQUENCE
027438,000096: # L CALL
027439,000097: # L+1 S30.1
027440,000098:
027441,000099: # NORMAL EXIT MODE
027442,000100: # AT L+2 OR CALLING SEQUENCE (GOTO L+2)
027443,000101:
027444,000102: # SUBROUTINES CALLED
027445,000103: # LEMPREC
027446,000104: # PERIAPO
027447,000105:
027448,000106: # ALARM OR ABORT EXIT MODES
027449,000107: # NONE
027450,000108:
027451,000109: # ERASABLE INITIALIZATION REQUIRED
027452,000110: # TIG TIME OF IGNITION DP B28CS
027453,000111: # DELVSLV SPECIFIED DELTA-V IN LOCAL VERT.
027454,000112: # COORDS. OF ACTIVE VEHICLE AT
027455,000113: # TIME OF IGNITION VECTOR B+7 METERS/CS
027456,000114:
027457,000115: # OUTPUT
027458,000116: # RTIG POSITION AT TIG VECTOR B+29 METERS
027459,000117: # VTIG VELOCITY AT TIG VECTOR B+29 METERS/CS
027460,000118: # PDL 4D APOGEE ALTITUDE DP B+29 M , B+27 METERS.
027461,000119: # HAPO APOGEE ALTITUDE DP B+29 METERS
027462,000120: # PDL 8D PERIGEE ALTITUDE DP B+29 M , B+27 METERS.
027463,000121: # HPER PERIGEE ALTITUDE DP B+29 METERS
027464,000122: # DELVSIN SPECIFIED DELTA-V IN INERTIAL
027465,000123: # COORD. OF ACTIVE VEHICLE AT
027466,000124: # TIME OF IGNITION VECTOR B+7 METERS/CS
027467,000125: # DELVSAB MAG. OF DELVSIN VECTOR B+7 METERS/CS
027468,000126:
027469,000127: # DEBRIS QTEMP TEMP.ERASABLE
027470,000128: # QPRET, MPAC
027471,000129: # PUSHLIST
027472,000130:
027473,000131: 34,2000 SETLOC P30S1
027474,000132: 34,2000 BANK
027475,000133:
027476,000134: 34,2000 COUNT* $$/S30S
027477,000135:
027478,000136: 34,2000 71220 S30.1 STQ DLOAD
027479,000137: 34,2001 03630 QTEMP
027480,000138: 34,2002 03440 TIG # TIME IGNITION SCALED AT 2(+28)CS
027481,000139: 34,2003 34041 STCALL TDEC1
027482,000140: 34,2004 27057 LEMPREC # ENCKE ROUTINE FOR LEM
027483,000141:
027484,000142: 34,2005 67175 VLOAD SXA,2
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Page 627
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027486,000144: 34,2006 00001 RATT
027487,000145: 34,2007 03376 RTX2
027488,000146: 34,2010 03640 STORE RTIG # RADIUS VECTOR AT IGNITION TIME
027489,000147: 34,2011 57456 UNIT VCOMP
027490,000148: 34,2012 27654 STOVL DELVSIN # ZRF/LV IN DELVSIN SCALED AT 2
027491,000149: 34,2013 00007 VATT # VELOCITY VECTOR AT TIG, SCALED 2(7) M/CS
027492,000150: 34,2014 03646 STORE VTIG
027493,000151: 34,2015 53435 VXV UNIT
027494,000152: 34,2016 03640 RTIG
027495,000153: 34,2017 66001 SETPD SXA,1
027496,000154: 34,2020 00001 0
027497,000155: 34,2021 03375 RTX1
027498,000156: 34,2022 47206 PUSH VXV # YRF/LV PDL 0 SCALED AT 2
027499,000157: 34,2023 03654 DELVSIN
027500,000158: 34,2024 63372 VSL1 PDVL
027501,000159: 34,2025 63315 PDVL PDVL # YRF/LV PDL 6 SCALED AT 2
027502,000160: 34,2026 03654 DELVSIN # ZRF/LV PDL 12D SCALED AT 2
027503,000161: 34,2027 03432 DELVSLV
027504,000162: 34,2030 76505 VXM VSL1
027505,000163: 34,2031 00001 0
027506,000164: 34,2032 03654 STORE DELVSIN # DELTAV IN INERT. COOR. SCALED TO B+7M/CS
027507,000165: 34,2033 77646 ABVAL
027508,000166: 34,2034 27662 STOVL DELVSAB # DELTA V MAG.
027509,000167: 34,2035 03640 RTIG # (FOR PERIAPO)
027510,000168: 34,2036 53315 PDVL VAD # VREQUIRED = VTIG + DELVSIN (FOR PERIAPO)
027511,000169: 34,2037 03646 VTIG
027512,000170: 34,2040 03654 DELVSIN
027513,000171: 34,2041 77624 CALL
027514,000172: 34,2042 46277 PERIAPO1
027515,000173: 34,2043 77624 CALL
027516,000174: 34,2044 46407 SHIFTR1 # RESCALE IF NEEDED
027517,000175: 34,2045 77624 CALL # LIMIT DISPLAY TO 9999.9 N. MI.
027518,000176: 34,2046 45636 MAXCHK
027519,000177: 34,2047 16325 STODL HPER # PERIGEE ALT 2(29) METERS, FOR DISPLAY
027520,000178: 34,2050 00005 4D
027521,000179: 34,2051 77624 CALL
027522,000180: 34,2052 46407 SHIFTR1 # RESCALE IF NEEDED
027523,000181: 34,2053 77624 CALL # LIMIT DISPLAY TO 9999.9 N. MI.
027524,000182: 34,2054 45636 MAXCHK
027525,000183: 34,2055 36323 STCALL HAPO # APOGEE ALT 2(29) METERS, FOR DISPLAY
027526,000184: 34,2056 03630 QTEMP
027527,000185:
027528,000186:
End of include-file P30,P37.agc. Parent file is MAIN.agc