Source Code
|
These source-code files are part of a reconstructed copy of Luminary 173, the
second (unflown) release of the Apollo 14 Lunar Module (LM) Apollo Guidance
Computer (AGC) software.
The reconstruction began with reconstructed source code for Luminary 178. Changes
between revision 173 and 178 were backed out, as described by Luminary memo 167
(revision 1). The reconstruction was verified by matching memory-bank checksums
to those listed in drawing 2021152N. Note that page numbers in the reconstructed
code match those for the baseline log section mentioned in each file's changelog;
the page numbers for a real Luminary 173 listing would be different.
Comments from the original source code are prefixed with a single '#' symbol,
whereas comments added later are prefixed by "##" or "###". Report any errors
noted by creating an
issue report at the Virtual AGC
project's GitHub repository.
|
026474,000002: ## Copyright: Public domain.
026475,000003: ## Filename: P30,P37.agc
026476,000004: ## Purpose: A section of Luminary revision 173.
026477,000005: ## It is part of the reconstructed source code for the second
026478,000006: ## (unflown) release of the flight software for the Lunar
026479,000007: ## Module's (LM) Apollo Guidance Computer (AGC) for Apollo 14.
026480,000008: ## The code has been recreated from a reconstructed copy of
026481,000009: ## Luminary 178, as well as Luminary memo 167 (revision 1).
026482,000010: ## It has been adapted such that the resulting bugger words
026483,000011: ## exactly match those specified for Luminary 173 in NASA
026484,000012: ## drawing 2021152N, which gives relatively high confidence
026485,000013: ## that the reconstruction is correct.
026486,000014: ## Reference: pp. 612-615
026487,000015: ## Assembler: yaYUL
026488,000016: ## Contact: Ron Burkey <info@sandroid.org>.
026489,000017: ## Website: www.ibiblio.org/apollo/index.html
026490,000018: ## Mod history: 2019-09-18 MAS Created from Luminary 178.
026491,000019:
|
|
Page 612
|
026493,000021: # PROGRAM DESCRIPTION P30 DATE 3-6-67
026494,000022:
026495,000023: # MOD.1 BY RAMA AIYAWAR
026496,000024: # FUNCTIONAL DESCRIPTION
026497,000025: # ACCEPT ASTRONAUT INPUTS OF TIG,DELV(LV)
026498,000026: # CALL IMU STATUS CHECK ROUTINE (R02)
026499,000027: # DISPLAY TIME TO GO, APOGEE, PERIGEE, DELV(MAG), MGA AT IGN
026500,000028: # REQUEST BURN PROGRAM
026501,000029:
026502,000030: # CALLING SEQUENCE VIA JOB FROM V37
026503,000031:
026504,000032: # EXIT VIA V37 CALL OR TO GOTOPOOH (V34E)
026505,000033:
026506,000034: # SUBROUTINE CALLS-FLAGUP, PHASCHNG, BANKCALL, ENDOFJOB, GOFLASH, GOFLASHR
026507,000035: # GOPERF3R, INTPRET, BLANKET, GOTOPOOH, R02BOTH, S30.1,
026508,000036: # TTG/N35, MIDGIM, DISPMGA
026509,000037:
026510,000038: # ERASABLE INITIALIZATION- STATE VECTOR
026511,000039:
026512,000040: # OUTPUT-RINIT, VINIT, +MGA, VTIG, RTIG, DELVSIN, DELVSAB, DELVSLV, HAPO,
026513,000041: # HPER, TTOGO
026514,000042:
026515,000043: # DEBRIS- A, L, MPAC, PUSHLIST
026516,000044:
026517,000045: 32,2550 BANK 32
026518,000046: 35,2000 SETLOC P30S
026519,000047: 35,2000 BANK
026520,000048: 35,2000 E4,1652 EBANK= +MGA
026521,000049: 35,2000 COUNT* $$/P30
026522,000050: 35,2000 05515 P30 TC UPFLAG # SET UPDATE FLAG
026523,000051: 35,2001 00027 ADRES UPDATFLG
026524,000052: 35,2002 05515 TC UPFLAG # SET TRACK FLAG
026525,000053: 35,2003 00031 ADRES TRACKFLG
026526,000054:
026527,000055: 35,2004 32032 P30N33 CAF V06N33 # T OF IGN
026528,000056: 35,2005 03627 TC VNPOOH # RETURNS ON PROCEED, POOH ON TERMINATE
026529,000057:
026530,000058: 35,2006 33644 CAF V06N81 # DISPLAY DELTA V (LV)
026531,000059: 35,2007 03627 TC VNPOOH # REDISPLAY ON RECYCLE
026532,000060:
026533,000061: 35,2010 05527 TC DOWNFLAG # RESET UPDATE FLAG
026534,000062: 35,2011 00027 ADRES UPDATFLG
026535,000063: 35,2012 06042 TC INTPRET
026536,000064: 35,2013 77624 CALL
026537,000065: 35,2014 70000 S30.1
026538,000066: 35,2015 43014 SET SET
026539,000067: 35,2016 00470 UPDATFLG
026540,000068: 35,2017 01067 XDELVFLG
026541,000069: 35,2020 77776 EXIT
026542,000070: 35,2021 32033 PARAM30 CAF V06N42 # DISPLAY APOGEE,PERIGEE ,DELTA V
026543,000071:
|
|
Page 613
|
026545,000073: 35,2022 03627 TC VNPOOH
026546,000074:
026547,000075: 35,2023 06042 TC INTPRET
026548,000076: 35,2024 77614 SET
026549,000077: 35,2025 01071 FINALFLG
026550,000078: 35,2026 77624 REVN1645 CALL
026551,000079: 35,2027 73523 VN1645
026552,000080: 35,2030 77650 GOTO # COMES HERE ON RECYCLE RESPONSE
026553,000081: 35,2031 72026 REVN1645
026554,000082:
026555,000083: 35,2032 01441 V06N33 VN 0633
026556,000084: 35,2033 01452 V06N42 VN 0642
026557,000085:
|
|
Page 614
|
026559,000087: # PROGRAM DESCRIPTION S30.1 DATE 9NOV66
026560,000088:
026561,000089: # MOD NO 1 LOG SECTION P30,P37
026562,000090: # MOD BY RAMA AIYAWAR **
026563,000091: # FUNCTIONAL DESCRIPTION
026564,000092: # BASED ON STORED TARGET PARAMETERS(R OF IGNITION(RTIG),V OF
026565,000093: # IGNITION(VTIG),TIME OF IGNITION (TIG)),COMPUTE PERIGEE ALTITUDE
026566,000094: # APOGEE ALTITUDE AND DELTAV REQUIRED(DELVSIN).
026567,000095: # CALLING SEQUENCE
026568,000096: # L CALL
026569,000097: # L+1 S30.1
026570,000098: # NORMAL EXIT MODE
026571,000099: # AT L+2 OR CALLING SEQUENCE (GOTO L+2)
026572,000100: # SUBROUTINES CALLED
026573,000101: # LEMPREC
026574,000102: # PERIAPO
026575,000103: # ALARM OR ABORT EXIT MODES
026576,000104: # NONE
026577,000105: # ERASABLE INITIALIZATION REQUIRED
026578,000106: # TIG TIME OF IGNITION DP B28CS
026579,000107: # DELVSLV SPECIFIED DELTA-V IN LOCAL VERT.
026580,000108: # COORDS. OF ACTIVE VEHICLE AT
026581,000109: # TIME OF IGNITION VECTOR B+7 METERS/CS
026582,000110: # OUTPUT
026583,000111: # RTIG POSITION AT TIG VECTOR B+29 METERS
026584,000112: # VTIG VELOCITY AT TIG VECTOR B+29 METERS/CS
026585,000113: # PDL 4D APOGEE ALTITUDE DP B+29 M , B+27 METERS.
026586,000114: # HAPO APOGEE ALTITUDE DP B+29 METERS
026587,000115: # PDL 8D PERIGEE ALTITUDE DP B+29 M , B+27 METERS.
026588,000116: # HPER PERIGEE ALTITUDE DP B+29 METERS
026589,000117: # DELVSIN SPECIFIED DELTA-V IN INERTIAL
026590,000118: # COORD. OF ACTIVE VEHICLE AT
026591,000119: # TIME OF IGNITION VECTOR B+7 METERS/CS
026592,000120: # DELVSAB MAG. OF DELVSIN VECTOR B+7 METERS/CS
026593,000121: # DEBRIS QTEMP TEMP. ERASABLE
026594,000122: # QPRET,MPAC
026595,000123: # PUSHLIST
026596,000124:
026597,000125: 34,2000 SETLOC P30S1
026598,000126: 34,2000 BANK
026599,000127:
026600,000128: 34,2000 COUNT* $$/S30S
026601,000129:
026602,000130: 34,2000 71220 S30.1 STQ DLOAD
026603,000131: 34,2001 03632 QTEMP
026604,000132: 34,2002 03442 TIG # TIME IGNITION SCALED AT 2(+28)CS
026605,000133: 34,2003 34041 STCALL TDEC1
026606,000134: 34,2004 27056 LEMPREC # ENCKE ROUTINE FOR LEM
026607,000135:
026608,000136: 34,2005 67175 VLOAD SXA,2
026609,000137:
|
|
Page 615
|
026611,000139: 34,2006 00001 RATT
026612,000140: 34,2007 02777 RTX2
026613,000141: 34,2010 03642 STORE RTIG # RADIUS VECTOR AT IGNITION TIME
026614,000142: 34,2011 57456 UNIT VCOMP
026615,000143: 34,2012 27656 STOVL DELVSIN # ZRF/LV IN DELVSIN SCALED AT 2
026616,000144: 34,2013 00007 VATT # VELOCITY VECTOR AT TIG, SCALED 2(7) M/CS
026617,000145: 34,2014 03650 STORE VTIG
026618,000146: 34,2015 53435 VXV UNIT
026619,000147: 34,2016 03642 RTIG
026620,000148: 34,2017 66001 SETPD SXA,1
026621,000149: 34,2020 00001 0
026622,000150: 34,2021 02776 RTX1
026623,000151: 34,2022 47206 PUSH VXV # YRF/LV PDL 0 SCALED AT 2
026624,000152: 34,2023 03656 DELVSIN
026625,000153: 34,2024 63372 VSL1 PDVL
026626,000154: 34,2025 63315 PDVL PDVL # YRF/LV PDL 6 SCALED AT 2
026627,000155: 34,2026 03656 DELVSIN # ZRF/LV PDL 12D SCALED AT 2
026628,000156: 34,2027 03434 DELVSLV
026629,000157: 34,2030 76505 VXM VSL1
026630,000158: 34,2031 00001 0
026631,000159: 34,2032 03656 STORE DELVSIN # DELTAV IN INERT. COOR. SCALED TO B+7M/CS
026632,000160: 34,2033 77646 ABVAL
026633,000161: 34,2034 27664 STOVL DELVSAB # DELTA V MAG.
026634,000162: 34,2035 03642 RTIG # (FOR PERIAPO)
026635,000163: 34,2036 53315 PDVL VAD # VREQUIRED = VTIG + DELVSIN (FOR PERIAPO)
026636,000164: 34,2037 03650 VTIG
026637,000165: 34,2040 03656 DELVSIN
026638,000166: 34,2041 77624 CALL
026639,000167: 34,2042 46335 PERIAPO1
026640,000168: 34,2043 77624 CALL
026641,000169: 34,2044 46445 SHIFTR1 # RESCALE IF NEEDED
026642,000170: 34,2045 77624 CALL # LIMIT DISPLAY TO 9999.9 N. MI.
026643,000171: 34,2046 45636 MAXCHK
026644,000172: 34,2047 16321 STODL HPER # PERIGEE ALT 2(29) METERS, FOR DISPLAY
026645,000173: 34,2050 00005 4D
026646,000174: 34,2051 77624 CALL
026647,000175: 34,2052 46445 SHIFTR1 # RESCALE IF NEEDED
026648,000176: 34,2053 77624 CALL # LIMIT DISPLAY TO 9999.9 N. MI.
026649,000177: 34,2054 45636 MAXCHK
026650,000178: 34,2055 36317 STCALL HAPO # APOGEE ALT 2(29) METERS, FOR DISPLAY
026651,000179: 34,2056 03632 QTEMP
End of include-file P30,P37.agc. Parent file is MAIN.agc