Source Code
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This is a reconstructed version of Luminary 130, the initial AGC program released
in November 1969 for the Apollo 13 LM. Three more releases
followed before the flown revision was finally manufactured in February 1970.
This reconstruction was created from a previous transcription of the original listing of
Luminary 131, combined with Luminary memo #129 which describes the small difference
between the Luminary 130 and 131. The reconstructed source code was verified by
matching memory-bank checksums to those listed for Luminary 130 in drawing 2021152G.
In this source code, program comments from the original (Luminary 131) code are
prefixed with '#', while those added later by the Virtual AGC project are prefixed
with '##'.
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026442,000002: ## Copyright: Public domain.
026443,000003: ## Filename: P30,P37.agc
026444,000004: ## Purpose: A section of the reconstructed source code for Luminary 130.
026445,000005: ## This was the original program released for the Apollo 13 LM,
026446,000006: ## although several more revisions would follow. It has been
026447,000007: ## reconstructed from a listing of Luminary 131, from which it
026448,000008: ## differs on only two lines in P70-P71. The difference is
026449,000009: ## described in detail in Luminary memo #129, which was used
026450,000010: ## to perform the reconstruction. This file is intended to be a
026451,000011: ## faithful reconstruction, except that the code format has been
026452,000012: ## changed to conform to the requirements of the yaYUL assembler
026453,000013: ## rather than the original YUL assembler.
026454,000014: ## Reference: pp. 619-622
026455,000015: ## Contact: Ron Burkey <info@sandroid.org>.
026456,000016: ## Website: www.ibiblio.org/apollo
026457,000017: ## Mod history: 05/19/03 RSB. Began transcribing.
026458,000018: ## 2017-01-06 RSB Page numbers now agree with those on the
026459,000019: ## original harcopy, as opposed to the PDF page
026460,000020: ## numbers in 1701.pdf.
026461,000021: ## 2017-02-24 RSB Proofed comment text using octopus/ProoferComments.
026462,000022: ## 2017-03-09 RSB Fixed VNP00H to VNPOOH.
026463,000023: ## 2017-03-14 RSB Comment-text fixes noted in proofing Luminary 116.
026464,000024: ## 2018-09-04 MAS Copied from Luminary 131 for Luminary 130.
026465,000025:
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Page 619
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026467,000027: # PROGRAM DESCRIPTION P30 DATE 3-6-67
026468,000028: # MOD.1 BY RAMA AIYAWAR
026469,000029:
026470,000030: # FUNCTIONAL DESCRIPTION
026471,000031: # ACCEPT ASTRONAUT INPUTS OF TIG,DELV(LV)
026472,000032: # CALL IMU STATUS CHECK ROUTINE (R02)
026473,000033: # DISPLAY TIME TO GO, APOGEE, PERIGEE, DELV(MAG), MGA AT IGN
026474,000034: # REQUEST BURN PROGRAM
026475,000035:
026476,000036: # CALLING SEQUENCE VIA JOB FROM V37
026477,000037:
026478,000038: # EXIT VIA V37 CALL OR TO GOTOPOOH (V34E)
026479,000039:
026480,000040: # SUBROUTINE CALLS - FLAGUP, PHASCHNG, BANKCALL, ENDOFJOB, GOFLASH, GOFLASHR
026481,000041: # GOPERF3R, INTPRET, BLANKET, GOTOPOOH, R02BOTH, S30.1,
026482,000042: # TTG/N35, MIDGIM, DISPMGA
026483,000043:
026484,000044: # ERASABLE INITIALIZATION - STATE VECTOR
026485,000045:
026486,000046: # OUTPUT - RINIT, VINIT, +MGA, VTIG, RTIG, DELVSIN, DELVSAB, DELVSLV, HAPO,
026487,000047: # HPER, TTOGO
026488,000048:
026489,000049: # DEBRIS - A, L, MPAC, PUSHLIST
026490,000050:
026491,000051: 32,3000 BANK 32
026492,000052: 35,2000 SETLOC P30S
026493,000053: 35,2000 BANK
026494,000054: 35,2000 E4,1652 EBANK= +MGA
026495,000055: 35,2000 COUNT* $$/P30
026496,000056: 35,2000 05504 P30 TC UPFLAG # SET UPDATE FLAG
026497,000057: 35,2001 00027 ADRES UPDATFLG
026498,000058: 35,2002 05504 TC UPFLAG # SET TRACK FLAG
026499,000059: 35,2003 00031 ADRES TRACKFLG
026500,000060:
026501,000061: 35,2004 32032 P30N33 CAF V06N33 # T OF IGN
026502,000062: 35,2005 03621 TC VNPOOH # RETURNS ON PROCEED, POOH ON TERMINATE
026503,000063:
026504,000064: 35,2006 33636 CAF V06N81 # DISPLAY DELTA V (LV)
026505,000065: 35,2007 03621 TC VNPOOH # REDISPLAY ON RECYCLE
026506,000066:
026507,000067: 35,2010 05516 TC DOWNFLAG # RESET UPDATE FLAG
026508,000068: 35,2011 00027 ADRES UPDATFLG
026509,000069: 35,2012 06042 TC INTPRET
026510,000070: 35,2013 77624 CALL
026511,000071: 35,2014 70000 S30.1
026512,000072: 35,2015 43014 SET SET
026513,000073: 35,2016 00470 UPDATFLG
026514,000074: 35,2017 01067 XDELVFLG
026515,000075: 35,2020 77776 EXIT
026516,000076: 35,2021 32033 PARAM30 CAF V06N42 # DISPLAY APOGEE,PERIGEE,DELTA V
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Page 620
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026518,000078: 35,2022 03621 TC VNPOOH
026519,000079:
026520,000080: 35,2023 06042 TC INTPRET
026521,000081: 35,2024 77614 SET
026522,000082: 35,2025 01071 FINALFLG
026523,000083: 35,2026 77624 REVN1645 CALL
026524,000084: 35,2027 73515 VN1645
026525,000085: 35,2030 77650 GOTO # COMES HERE ON RECYCLE RESPONSE
026526,000086: 35,2031 72026 REVN1645
026527,000087:
026528,000088: 35,2032 01441 V06N33 VN 0633
026529,000089: 35,2033 01452 V06N42 VN 0642
026530,000090:
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Page 621
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026532,000092: # PROGRAM DESCRIPTION S30.1 DATE 9NOV66
026533,000093: # MOD NO 1 LOG SECTION P30,P37
026534,000094: # MOD BY RAMA AIYAWAR **
026535,000095:
026536,000096: # FUNCTIONAL DESCRIPTION
026537,000097: # BASED ON STORED TARGET PARAMETERS (R OF IGNITION (RTIG), V OF
026538,000098: # IGNITION (VTIG), TIME OF IGNITION (TIG)), COMPUTE PERIGEE ALTITUDE
026539,000099: # APOGEE ALTITUDE AND DELTAV REQUIRED (DELVSIN).
026540,000100:
026541,000101: # CALLING SEQUENCE
026542,000102: # L CALL
026543,000103: # L+1 S30.1
026544,000104:
026545,000105: # NORMAL EXIT MODE
026546,000106: # AT L+2 OR CALLING SEQUENCE (GOTO L+2)
026547,000107:
026548,000108: # SUBROUTINES CALLED
026549,000109: # LEMPREC
026550,000110: # PERIAPO
026551,000111:
026552,000112: # ALARM OR ABORT EXIT MODES
026553,000113: # NONE
026554,000114:
026555,000115: # ERASABLE INITIALIZATION REQUIRED
026556,000116: # TIG TIME OF IGNITION DP B28CS
026557,000117: # DELVSLV SPECIFIED DELTA-V INLOCAL VERT.
026558,000118: # COORDS. OF ACTIVE VEHICLE AT
026559,000119: # TIME OF IGNITION VECTOR B+7 METERS/CS
026560,000120:
026561,000121: # OUTPUT
026562,000122: # RTIG POSITION AT TIG VECTOR B+29 METERS
026563,000123: # VTIG VELOCITY AT TIG VECTOR B+29 METERS/CS
026564,000124: # PDL 4D APOGEE ALTITUDE DP B+29 M, B+27 METERS.
026565,000125: # HAPO APOGEE ALTITUDE DP B+29 METERS
026566,000126: # PDL 8D PERIGEE ALTITUDE DP B+29 M, B+27 METERS.
026567,000127: # HPER PERIGEE ALTITUDE DP B+29 METERS
026568,000128: # DELVSIN SPECIFIED DELTA-V IN INERTIAL
026569,000129: # COORD. OF ACTIVE VEHICLE AT
026570,000130: # TIME OF IGNITION VECTOR B+7 METERS/CS
026571,000131: # DELVSAB MAG. OF DELVSIN VECTOR B+7 METERS/CS
026572,000132:
026573,000133: # DEBRIS QTEMP TEMP.ERASABLE
026574,000134: # QPRET, MPAC
026575,000135: # PUSHLIST
026576,000136:
026577,000137: 34,2000 SETLOC P30S1
026578,000138: 34,2000 BANK
026579,000139:
026580,000140: 34,2000 COUNT* $$/S30S
026581,000141:
026582,000142: 34,2000 71220 S30.1 STQ DLOAD
026583,000143: 34,2001 03632 QTEMP
026584,000144: 34,2002 03442 TIG # TIME IGNITION SCALED AT 2(+28)CS
026585,000145: 34,2003 34041 STCALL TDEC1
026586,000146: 34,2004 27056 LEMPREC # ENCKE ROUTINE FOR LEM
026587,000147:
026588,000148: 34,2005 67175 VLOAD SXA,2
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Page 622
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026590,000150: 34,2006 00001 RATT
026591,000151: 34,2007 02777 RTX2
026592,000152: 34,2010 03642 STORE RTIG # RADIUS VECTOR AT IGNITION TIME
026593,000153: 34,2011 57456 UNIT VCOMP
026594,000154: 34,2012 27656 STOVL DELVSIN # ZRF/LV IN DELVSIN SCALED AT 2
026595,000155: 34,2013 00007 VATT # VELOCITY VECTOR AT TIG, SCALED 2(7) M/CS
026596,000156: 34,2014 03650 STORE VTIG
026597,000157: 34,2015 53435 VXV UNIT
026598,000158: 34,2016 03642 RTIG
026599,000159: 34,2017 66001 SETPD SXA,1
026600,000160: 34,2020 00001 0
026601,000161: 34,2021 02776 RTX1
026602,000162: 34,2022 47206 PUSH VXV # YRF/LV PDL 0 SCALED AT 2
026603,000163: 34,2023 03656 DELVSIN
026604,000164: 34,2024 63372 VSL1 PDVL
026605,000165: 34,2025 63315 PDVL PDVL # YRF/LV PDL 6 SCALED AT 2
026606,000166: 34,2026 03656 DELVSIN # ZRF/LV PDL 12D SCALED AT 2
026607,000167: 34,2027 03434 DELVSLV
026608,000168: 34,2030 76505 VXM VSL1
026609,000169: 34,2031 00001 0
026610,000170: 34,2032 03656 STORE DELVSIN # DELTAV IN INERT. COOR. SCALED TO B+7M/CS
026611,000171: 34,2033 77646 ABVAL
026612,000172: 34,2034 27664 STOVL DELVSAB # DELTA V MAG.
026613,000173: 34,2035 03642 RTIG # (FOR PERIAPO)
026614,000174: 34,2036 53315 PDVL VAD # VREQUIRED = VTIG + DELVSIN (FOR PERIAPO)
026615,000175: 34,2037 03650 VTIG
026616,000176: 34,2040 03656 DELVSIN
026617,000177: 34,2041 77624 CALL
026618,000178: 34,2042 46341 PERIAPO1
026619,000179: 34,2043 77624 CALL
026620,000180: 34,2044 46451 SHIFTR1 # RESCALE IF NEEDED
026621,000181: 34,2045 77624 CALL # LIMIT DISPLAY TO 9999.9 N. MI.
026622,000182: 34,2046 45636 MAXCHK
026623,000183: 34,2047 16321 STODL HPER # PERIGEE ALT 2(29) METERS, FOR DISPLAY
026624,000184: 34,2050 00005 4D
026625,000185: 34,2051 77624 CALL
026626,000186: 34,2052 46451 SHIFTR1 # RESCALE IF NEEDED
026627,000187: 34,2053 77624 CALL # LIMIT DISPLAY TO 9999.9 N. MI.
026628,000188: 34,2054 45636 MAXCHK
026629,000189: 34,2055 36317 STCALL HAPO # APOGEE ALT 2(29) METERS, FOR DISPLAY
026630,000190: 34,2056 03632 QTEMP
026631,000191:
026632,000192:
End of include-file P30,P37.agc. Parent file is MAIN.agc