Source Code

This is a reconstruction of the AGC program Luminary 99 Rev 0. It was the second release of the Lunar Module flight software targeted for use in Apollo 11, after Luminary 97. A bug (which had been around since at least Apollo 10, Luminary 69) was discovered in Rev 0 shortly before the Apollo 11 flight, resulting in a last minute revision into Rev 1, which is what actually flew rather than the Rev 0 presented here. A hardcopy of Rev 0 is known to exist — it belonged to AGC developer Allan Klumpp for many years — but unfortunately the Virtual AGC Project has not had access to that hardcopy. Thus the code you see here had been reconstructed (we believe accurately) rather than transcribed. The first step of the reconstruction of the Rev 0 source code was the transcription of the Rev 1 source code from a hardcopy in the MIT Museum collection. The process of reverting the active portion of the source code (i.e., other than program comments) from Rev 1 to Rev 0 was very minor, consisting only of moving the position of the STARTSB1 label in FRESH START AND RESTART. Allan had previously given us the checksums of the memory banks of Rev 0, and we have verified the program presented here has checksums identical to all banks of Allan's listing of Rev 0. The notations on Allan's Rev 0 program listing read, in part:

	GAP:  ASSEMBLE REVISION 099 OF AGC PROGRAM LUMINARY BY NASA 2021112-051

A single program comment is known to differ between Rev 0 and Rev 1, but these are harder to reconstruct and verify than changes to the active portion of the code. Thus it is possible that there are additional differences between the program comments in Rev 0 and Rev 1 that are unknown to us, and therefore are not reflected in the code presented here.

001175,000002:                                                                                                  ## Copyright:   Public domain.
001176,000003:                                                                                                  ## Filename:    TAGS_FOR_RELATIVE_SETLOC_AND_BLANK_BANK_CARDS.agc
001177,000004:                                                                                                  ## Purpose:     Part of the reconstructed source code for LMY99 Rev 0,
001178,000005:                                                                                                  ##              otherwise known as Luminary Rev 99, the second release
001179,000006:                                                                                                  ##              of the Apollo Guidance Computer (AGC) software for Apollo 11.
001180,000007:                                                                                                  ##              It differs from LMY99 Rev 1 (the flown version) only in the
001181,000008:                                                                                                  ##              placement of a single label. The corrections shown here have
001182,000009:                                                                                                  ##              been verified to have the same bank checksums as AGC developer
001183,000010:                                                                                                  ##              Allan Klumpp's copy of Luminary Rev 99, and so are believed
001184,000011:                                                                                                  ##              to be accurate. This file is intended to be a faithful 
001185,000012:                                                                                                  ##              recreation, except that the code format has been changed to 
001186,000013:                                                                                                  ##              conform to the requirements of the yaYUL assembler rather than 
001187,000014:                                                                                                  ##              the original YUL assembler.
001188,000015:                                                                                                  ##
001189,000016:                                                                                                  ## Assembler:   yaYUL
001190,000017:                                                                                                  ## Contact:     Jim Lawton <jim.lawton@gmail.com>
001191,000018:                                                                                                  ## Website:     www.ibiblio.org/apollo.
001192,000019:                                                                                                  ## Pages:       028-037
001193,000020:                                                                                                  ## Mod history: 2009-05-16      JVL     Transcribed from page images.
001194,000021:                                                                                                  ##              2016-12-13 RSB  Proofed text comments with octopus/ProoferComments
001195,000022:                                                                                                  ##                              and corrected the errors found.
001196,000023:                                                                                                  ##              2017-08-01 MAS  Created from LMY99 Rev 1.
001197,000024: 
001198,000025:                                                                                                  ## This source code has been transcribed or otherwise adapted from
001199,000026:                                                                                                  ## digitized images of a hardcopy from the MIT Museum.  The digitization
001200,000027:                                                                                                  ## was performed by Paul Fjeld, and arranged for by Deborah Douglas of
001201,000028:                                                                                                  ## the Museum.  Many thanks to both.  The images (with suitable reduction
001202,000029:                                                                                                  ## in storage size and consequent reduction in image quality as well) are
001203,000030:                                                                                                  ## available online at www.ibiblio.org/apollo.  If for some reason you
001204,000031:                                                                                                  ## find that the images are illegible, contact me at info@sandroid.org
001205,000032:                                                                                                  ## about getting access to the (much) higher-quality images which Paul
001206,000033:                                                                                                  ## actually created.
001207,000034:                                                                                                  ##
001208,000035:                                                                                                  ## The code has been modified to match LMY99 Revision 0, otherwise
001209,000036:                                                                                                  ## known as Luminary Revision 99, the Apollo 11 software release preceeding
001210,000037:                                                                                                  ## the listing from which it was transcribed. It has been verified to
001211,000038:                                                                                                  ## contain the same bank checksums as AGC developer Allan Klumpp's listing
001212,000039:                                                                                                  ## of Luminary Revision 99 (for which we do not have scans).
001213,000040:                                                                                                  ##
001214,000041:                                                                                                  ## Notations on Allan Klumpp's listing read, in part:
001215,000042:                                                                                                  ##
001216,000043:                                                                                                  ##      ASSEMBLE REVISION 099 OF AGC PROGRAM LUMINARY BY NASA 2021112-51
001217,000044: 

Page 28

001219,000046: ???????                                           COUNT    BANKSUM                               
001220,000047: 
001221,000048:                                                                                                  #  MODULE 1 CONTAINS BANKS 0 THROUGH 5
001222,000049: 
001223,000050:    4000                                           BLOCK    02                                    
001224,000051:    4000                        RADARFF            EQUALS                                         
001225,000052:    4000                        FFTAG1             EQUALS                                         
001226,000053:    4000                        FFTAG2             EQUALS                                         
001227,000054:    4000                        FFTAG3             EQUALS                                         
001228,000055:    4000                        FFTAG4             EQUALS                                         
001229,000056:    4000                        FFTAG7             EQUALS                                         
001230,000057:    4000                        FFTAG8             EQUALS                                         
001231,000058:    4000                        FFTAG9             EQUALS                                         
001232,000059:    4000                        FFTAG10            EQUALS                                         
001233,000060:    4000                        FFTAG11            EQUALS                                         
001234,000061:    4000                        FFTAG12            EQUALS                                         
001235,000062:    4000                        FFTAG13            EQUALS                                         
001236,000063:    4000                                           BNKSUM   02                                    
001237,000064: 
001238,000065:    6000                                           BLOCK    03                                    
001239,000066:    6000                        FFTAG5             EQUALS                                         
001240,000067:    6000                        FFTAG6             EQUALS                                         
001241,000068:    6000                                           BNKSUM   03                                    
001242,000069: 
001243,000070: 00,2000                                           BANK     00                                    
001244,000071: 00,2000                        DLAYJOB            EQUALS                                         
001245,000072: 00,2000                                           BNKSUM   00                                    
001246,000073: 
001247,000074: 01,2000                                           BANK     01                                    
001248,000075: 01,2000                        RESTART            EQUALS                                         
001249,000076: 01,2000                        LOADDAP1           EQUALS                                         
001250,000077: 01,2000                                           BNKSUM   01                                    
001251,000078: 
001252,000079: 04,2000                                           BANK     04                                    
001253,000080: 04,2000                        R02                EQUALS                                         
001254,000081: 04,2000                        VERB37             EQUALS                                         
001255,000082: 04,2000                        PINBALL4           EQUALS                                         
001256,000083: 04,2000                        CONICS1            EQUALS                                         
001257,000084: 04,2000                        KEYRUPT            EQUALS                                         
001258,000085: 04,2000                        R36LM              EQUALS                                         
001259,000086: 04,2000                        UPDATE2            EQUALS                                         
001260,000087: 04,2000                        E/PROG             EQUALS                                         
001261,000088: 04,2000                        AOTMARK2           EQUALS                                         
001262,000089: 04,2000                                           BNKSUM   04                                    
001263,000090: 

Page 29

001265,000092: 05,2000                                           BANK     05                                    
001266,000093: 05,2000                        FRANDRES           EQUALS                                         
001267,000094: 05,2000                        DOWNTELM           EQUALS                                         
001268,000095: 05,2000                        ABORTS1            EQUALS                                         
001269,000096: 05,2000                        EPHEM1             EQUALS                                         
001270,000097: 05,2000                        ASENT3             EQUALS                                         
001271,000098: 05,2000                                           BNKSUM   05                                    
001272,000099: 
001273,000100:                                                                                                  #  MODULE 2 CONTAINS BANKS 6 THROUGH 13
001274,000101: 
001275,000102: 06,2000                                           BANK     06                                    
001276,000103: 06,2000                        IMUCOMP            EQUALS                                         
001277,000104: 06,2000                        T4RUP              EQUALS                                         
001278,000105: 06,2000                        RCSMONT            EQUALS                                         
001279,000106: 06,2000                        MIDDGIM            EQUALS                                         
001280,000107: 06,2000                        EARTHLOC           EQUALS                                         
001281,000108: 06,2000                                           BNKSUM   06                                    
001282,000109: 
001283,000110: 07,2000                                           BANK     07                                    
001284,000111: 07,2000                        AOTMARK1           EQUALS                                         
001285,000112: 07,2000                        MODESW             EQUALS                                         
001286,000113: 07,2000                        ASENT2             EQUALS                                         
001287,000114: 07,2000                                           BNKSUM   07                                    
001288,000115: 
001289,000116: 10,2000                                           BANK     10                                    
001290,000117: 10,2000                        RTBCODES           EQUALS                                         
001291,000118: 10,2000                        DISPLAYS           EQUALS                                         
001292,000119: 10,2000                        PHASETAB           EQUALS                                         
001293,000120: 10,2000                        FLESHLOC           EQUALS                                         
001294,000121: 10,2000                        SLCTMU             EQUALS                                         
001295,000122: 10,2000                                           BNKSUM   10                                    
001296,000123: 
001297,000124: 11,2000                                           BANK     11                                    
001298,000125: 11,2000                        ORBITAL            EQUALS                                         
001299,000126: 11,2000                        F2DPS*11           EQUALS                                         
001300,000127: 11,2000                        INTVEL             EQUALS                                         
001301,000128: 11,2000                                           BNKSUM   11                                    
001302,000129: 
001303,000130: 12,2000                                           BANK     12                                    
001304,000131: 12,2000                        CONICS             EQUALS                                         
001305,000132: 12,2000                        ORBITAL1           EQUALS                                         

Page 30

001307,000134: 12,2000                        INTPRET2           EQUALS                                         
001308,000135: 12,2000                                           BNKSUM   12                                    
001309,000136: 
001310,000137: 13,2000                                           BANK     13                                    
001311,000138: 13,2000                        LATLONG            EQUALS                                         
001312,000139: 13,2000                        INTINIT            EQUALS                                         
001313,000140: 13,2000                        LEMGEOM            EQUALS                                         
001314,000141: 13,2000                        P76LOC             EQUALS                                         
001315,000142: 13,2000                        ORBITAL2           EQUALS                                         
001316,000143: 13,2000                        ABTFLGS            EQUALS                                         
001317,000144: 13,2000                                           BNKSUM   13                                    
001318,000145: 

Page 31

001320,000147:                                                                                                  #  MODULE 3 CONTAINS BANKS 14 THROUGH 21
001321,000148: 
001322,000149: 14,2000                                           BANK     14                                    
001323,000150: 14,2000                        P50S1              EQUALS                                         
001324,000151: 14,2000                        STARTAB            EQUALS                                         
001325,000152: 14,2000                        ASENT4             EQUALS                                         
001326,000153: 14,2000                                           BNKSUM   14                                    
001327,000154: 
001328,000155: 15,2000                                           BANK     15                                    
001329,000156: 15,2000                        P50S               EQUALS                                         
001330,000157: 15,2000                        EPHEM              EQUALS                                         
001331,000158: 15,2000                                           BNKSUM   15                                    
001332,000159: 
001333,000160: 16,2000                                           BANK     16                                    
001334,000161: 16,2000                        DAPS1              EQUALS                                         
001335,000162: 16,2000                                           BNKSUM   16                                    
001336,000163: 
001337,000164: 17,2000                                           BANK     17                                    
001338,000165: 17,2000                        DAPS2              EQUALS                                         
001339,000166: 17,2000                        P40S3              EQUALS                                         
001340,000167: 17,2000                                           BNKSUM   17                                    
001341,000168: 
001342,000169: 20,2000                                           BANK     20                                    
001343,000170: 20,2000                        DAPS3              EQUALS                                         
001344,000171: 20,2000                        LOADDAP            EQUALS                                         
001345,000172: 20,2000                        RODTRAP            EQUALS                                         
001346,000173: 20,2000                                           BNKSUM   20                                    
001347,000174: 
001348,000175: 21,2000                                           BANK     21                                    
001349,000176: 21,2000                        DAPS4              EQUALS                                         
001350,000177: 21,2000                        R10                EQUALS                                         
001351,000178: 21,2000                        R11                EQUALS                                         
001352,000179: 21,2000                                           BNKSUM   21                                    

Page 32

001354,000181: 
001355,000182:                                                                                                  #  MODULE 4 CONTAINS BANKS 22 THROUGH 27
001356,000183: 
001357,000184: 22,2000                                           BANK     22                                    
001358,000185: 22,2000                        KALCMON1           EQUALS                                         
001359,000186: 22,2000                        KALCMON2           EQUALS                                         
001360,000187: 22,2000                        R30LOC             EQUALS                                         
001361,000188: 22,2000                        RENDEZ             EQUALS                                         
001362,000189: 22,2000                        SERV2              EQUALS                                         
001363,000190: 22,2000                        LANDCNST           EQUALS                                         
001364,000191: 22,2000                                           BNKSUM   22                                    
001365,000192: 
001366,000193: 23,2000                                           BANK     23                                    
001367,000194: 23,2000                        POWFLITE           EQUALS                                         
001368,000195: 23,2000                        POWFLIT1           EQUALS                                         
001369,000196: 23,2000                        INFLIGHT           EQUALS                                         
001370,000197: 23,2000                        APOPERI            EQUALS                                         
001371,000198: 23,2000                        R61                EQUALS                                         
001372,000199: 23,2000                        R62                EQUALS                                         
001373,000200: 23,2000                        INTPRET1           EQUALS                                         
001374,000201: 23,2000                        MEASINC            EQUALS                                         
001375,000202: 23,2000                        MEASINC1           EQUALS                                         
001376,000203: 23,2000                        EXTVB1             EQUALS                                         
001377,000204: 23,2000                        P12A               EQUALS                                         
001378,000205: 23,2000                        NORMLIZ            EQUALS                                         
001379,000206: 23,2000                        ASENT7             EQUALS                                         
001380,000207: 23,2000                                           BNKSUM   23                                    
001381,000208: 
001382,000209: 24,2000                                           BANK     24                                    
001383,000210: 24,2000                        PLANTIN            EQUALS                                         
001384,000211: 24,2000                        P20S               EQUALS                                         
001385,000212: 24,2000                                           BNKSUM   24                                    
001386,000213: 
001387,000214: 25,2000                                           BANK     25                                    
001388,000215: 25,2000                        P20S1              EQUALS                                         
001389,000216: 25,2000                        P20S2              EQUALS                                         
001390,000217: 25,2000                        RADARUPT           EQUALS                                         
001391,000218: 25,2000                        RRLEADIN           EQUALS                                         
001392,000219: 25,2000                        R29S1              EQUALS                                         
001393,000220: 25,2000                        PLANTIN3           EQUALS                                         
001394,000221: 25,2000                                           BNKSUM   25                                    
001395,000222: 
001396,000223: 26,2000                                           BANK     26                                    

Page 33

001398,000225: 26,2000                        P20S3              EQUALS                                         
001399,000226: 26,2000                        BAWLANGS           EQUALS                                         
001400,000227: 26,2000                        MANUVER            EQUALS                                         
001401,000228: 26,2000                        MANUVER1           EQUALS                                         
001402,000229: 26,2000                        PLANTIN1           EQUALS                                         
001403,000230: 26,2000                        PLANTIN2           EQUALS                                         
001404,000231: 26,2000                                           BNKSUM   26                                    
001405,000232: 
001406,000233: 27,2000                                           BANK     27                                    
001407,000234: 27,2000                        TOF-FF             EQUALS                                         
001408,000235: 27,2000                        TOF-FF1            EQUALS                                         
001409,000236: 27,2000                        P40S1              EQUALS                                         
001410,000237: 27,2000                        VECPT              EQUALS                                         
001411,000238: 27,2000                        ASENT1             EQUALS                                         
001412,000239: 27,2000                        SERV3              EQUALS                                         
001413,000240: 27,2000                                           BNKSUM   27                                    
001414,000241: 

Page 34

001416,000243:                                                                                                  #  MODULE 5 CONTAINS BANKS 30 THROUGH 35
001417,000244: 
001418,000245: 30,2000                                           BANK     30                                    
001419,000246: 30,2000                        LOWSUPER           EQUALS                                         
001420,000247: 30,2000                        P12                EQUALS                                         
001421,000248: 30,2000                        ASENT              EQUALS                                         
001422,000249: 30,2000                        FCDUW              EQUALS                                         
001423,000250: 30,2000                        FLOGSUB            EQUALS                                         
001424,000251: 30,2000                        VB67A              EQUALS                                         
001425,000252: 30,2000                        ASENT5             EQUALS                                         
001426,000253: 30,2000                                           BNKSUM   30                                    
001427,000254: 
001428,000255: 31,2000                                           BANK     31                                    
001429,000256: 31,2000                        FTHROT             EQUALS                                         
001430,000257: 31,2000                        F2DPS*31           EQUALS                                         
001431,000258: 31,2000                        VB67               EQUALS                                         
001432,000259: 31,2000                                           BNKSUM   31                                    
001433,000260: 
001434,000261: 32,2000                                           BANK     32                                    
001435,000262: 32,2000                        P20S4              EQUALS                                         
001436,000263: 32,2000                        F2DPS*32           EQUALS                                         
001437,000264: 32,2000                        ABORTS             EQUALS                                         
001438,000265: 32,2000                        LRS22              EQUALS                                         
001439,000266: 32,2000                        P66LOC             EQUALS                                         
001440,000267: 32,2000                        R47                EQUALS                                         
001441,000268: 32,2000                        SERV               EQUALS                                         
001442,000269: 32,2000                                           BNKSUM   32                                    
001443,000270: 
001444,000271: 33,2000                                           BANK     33                                    
001445,000272: 33,2000                        SERVICES           EQUALS                                         
001446,000273: 33,2000                        R29/SERV           EQUALS                                         
001447,000274: 33,2000                        ASENT6             EQUALS                                         
001448,000275: 33,2000                                           BNKSUM   33                                    
001449,000276: 
001450,000277: 34,2000                                           BANK     34                                    
001451,000278: 34,2000                        STBLEORB           EQUALS                                         
001452,000279: 34,2000                        P30S1              EQUALS                                         
001453,000280: 34,2000                        CSI/CDH1           EQUALS                                         
001454,000281: 34,2000                        ASCFILT            EQUALS                                         
001455,000282: 34,2000                        R12STUFF           EQUALS                                         
001456,000283: 34,2000                        SERV4              EQUALS                                         
001457,000284: 34,2000                                           BNKSUM   34                                    
001458,000285: 

Page 35

001460,000287: 35,2000                                           BANK     35                                    
001461,000288: 35,2000                        CSI/CDH            EQUALS                                         
001462,000289: 35,2000                        P30S               EQUALS                                         
001463,000290: 35,2000                        GLM                EQUALS                                         
001464,000291: 35,2000                        P40S2              EQUALS                                         
001465,000292: 35,2000                                           BNKSUM   35                                    
001466,000293: 

Page 36

001468,000295:                                                                                                  #  MODULE 6 CONTAINS BANKS 36 THROUGH 43
001469,000296: 
001470,000297: 36,2000                                           BANK     36                                    
001471,000298: 36,2000                        P40S               EQUALS                                         
001472,000299: 36,2000                                           BNKSUM   36                                    
001473,000300: 
001474,000301: 37,2000                                           BANK     37                                    
001475,000302: 37,2000                        P05P06             EQUALS                                         
001476,000303: 37,2000                        IMU2               EQUALS                                         
001477,000304: 37,2000                        IMU4               EQUALS                                         
001478,000305: 37,2000                        R31                EQUALS                                         
001479,000306: 37,2000                        IMUSUPER           EQUALS                                         
001480,000307: 37,2000                        SERV1              EQUALS                                         
001481,000308: 37,2000                                           BNKSUM   37                                    
001482,000309: 
001483,000310: 40,2000                                           BANK     40                                    
001484,000311: 40,2000                        PINBALL1           EQUALS                                         
001485,000312: 40,2000                        SELFSUPR           EQUALS                                         
001486,000313: 40,2000                        PINSUPER           EQUALS                                         
001487,000314: 40,2000                        R31LOC             EQUALS                                         
001488,000315: 40,2000                                           BNKSUM   40                                    
001489,000316: 
001490,000317: 41,2000                                           BANK     41                                    
001491,000318: 41,2000                        PINBALL2           EQUALS                                         
001492,000319: 41,2000                                           BNKSUM   41                                    
001493,000320: 
001494,000321: 42,2000                                           BANK     42                                    
001495,000322: 42,2000                        SBAND              EQUALS                                         
001496,000323: 42,2000                        PINBALL3           EQUALS                                         
001497,000324: 42,2000                                           BNKSUM   42                                    
001498,000325: 
001499,000326: 43,2000                                           BANK     43                                    
001500,000327: 43,2000                        EXTVERBS           EQUALS                                         
001501,000328: 43,2000                        SELFCHEC           EQUALS                                         
001502,000329: 43,2000                                           BNKSUM   43                                    
001503,000330: 

Page 37

001505,000332: 
001506,000333: 43,2000  23,2521               HI6ZEROS           EQUALS   ZEROVECS                              #  ZERO VECTOR ALWAYS IN HIGH MEMORY
001507,000334: 43,2000  12,2006               LO6ZEROS           EQUALS   ZEROVEC                               #  ZERO VECTOR ALWAYS IN LOW MEMORY
001508,000335: 43,2000  23,2517               HIDPHALF           EQUALS   UNITX                                 
001509,000336: 43,2000  12,2004               LODPHALF           EQUALS   XUNIT                                 
001510,000337: 43,2000  23,2511               HIDP1/4            EQUALS   DP1/4TH                               
001511,000338: 43,2000  04,3036               LODP1/4            EQUALS   D1/4                                  #  2DEC .25
001512,000339: 43,2000  23,2517               HIUNITX            EQUALS   UNITX                                 
001513,000340: 43,2000  23,2515               HIUNITY            EQUALS   UNITY                                 
001514,000341: 43,2000  23,2513               HIUNITZ            EQUALS   UNITZ                                 
001515,000342: 43,2000  12,2004               LOUNITX            EQUALS   XUNIT                                 #  2DEC .5
001516,000343: 43,2000  12,2002               LOUNITY            EQUALS   YUNIT                                 #  2DEC 0
001517,000344: 43,2000  12,2000               LOUNITZ            EQUALS   ZUNIT                                 #  2DEC 0
001518,000345: 
001519,000346: 43,2000  22,3541               DELRSPL            EQUALS   SPLRET                                #  COL PGM, ALSO CALLED BY R30 IN LUMINARY
001520,000347: 
001521,000348:                                                                                                  #  ROPE-SPECIFIC ASSIGNS OBVIATING NEED TO CHECK COMPUTER FLAG IN DETERMINING INTEGRATION AREA ENTRIES.
001522,000349: 
001523,000350: 43,2000  13,2734               ATOPTHIS           EQUALS   ATOPLEM                               
001524,000351: 43,2000  13,2661               ATOPOTH            EQUALS   ATOPCSM                               
001525,000352: 43,2000  13,3043               OTHPREC            EQUALS   CSMPREC                               
001526,000353: 43,2000  0000174               MOONTHIS           EQUALS   LMOONFLG                              
001527,000354: 43,2000  0000173               MOONOTH            EQUALS   CMOONFLG                              
001528,000355: 43,2000  13,2747               MOVATHIS           EQUALS   MOVEALEM                              
001529,000356: 43,2000  12,2017               RMM                =        LODPMAX                               
001530,000357: 43,2000  12,2021               RME                =        LODPMAX1                              
001531,000358: 43,2000  13,3057               THISPREC           EQUALS   LEMPREC                               
001532,000359: 43,2000  23,2513               THISAXIS           =        UNITZ                                 
001533,000360: 43,2000  23,2513               NB1NB2             EQUALS   THISAXIS                              #  FOR R31
001534,000361: 43,2000     5011               ERASID             EQUALS   BITS2-10                              #  DOWNLINK ERASABLE DUMP ID
001535,000362: 43,2000     4752               DELAYNUM           EQUALS   TWO                                   
001536,000363: 

End of include-file TAGS_FOR_RELATIVE_SETLOC_AND_BLANK_BANK_CARDS.agc.  Parent file is MAIN.agc