Source Code

These source-code files derive from a printout of Luminary 116 (the Apollo 12 Lunar Module guidance computer program), from the personal library of original AGC developer Don Eyles, digitally photographed at archive.org, financially sponsored by Ron Burkey, and transcribed to source code by a team of volunteers. This colorized, syntax-highlighted form was created by assembling that transcribed source code. Note that the full page images are available on the Virtual AGC project page at archive.org, while reduced-size images are presented at the VirtualAGC project website. Report or fix any transcription errors at the Virtual AGC project code repository.

Notations on the program listing read, in part:

	GAP:  ASSEMBLE REVISION 116 OF AGC PROGRAM LUMINARY BY NASA 2021112-071
	19:09 AUG. 11,1969
Note that the date is the date of the printout, not the date of the program revision.

046011,000002:                                                                                                  ## Copyright:   Public domain.
046012,000003:                                                                                                  ## Filename:    FIXED-FIXED_CONSTANT_POOL.agc
046013,000004:                                                                                                  ## Purpose:     A section of Luminary revision 116.
046014,000005:                                                                                                  ##              It is part of the source code for the Lunar Module's (LM) 
046015,000006:                                                                                                  ##              Apollo Guidance Computer (AGC) for Apollo 12.
046016,000007:                                                                                                  ##              This file is intended to be a faithful transcription, except
046017,000008:                                                                                                  ##              that the code format has been changed to conform to the
046018,000009:                                                                                                  ##              requirements of the yaYUL assembler rather than the
046019,000010:                                                                                                  ##              original YUL assembler.
046020,000011:                                                                                                  ## Reference:   pp. 1087-1091
046021,000012:                                                                                                  ## Assembler:   yaYUL
046022,000013:                                                                                                  ## Contact:     Ron Burkey <info@sandroid.org>.
046023,000014:                                                                                                  ## Website:     www.ibiblio.org/apollo/index.html
046024,000015:                                                                                                  ## Mod history: 2017-01-22 MAS  Created from Luminary 99.
046025,000016:                                                                                                  ##              2017-02-11 NV   Updated for Luminary 116.
046026,000017:                                                                                                  ##              2017-03-13 RSB  Proofed comment text via 3-way diff vs
046027,000018:                                                                                                  ##                              Luminary 99 and 132.
046028,000019: 

Page 1087

046030,000021:    4732                                           BLOCK    02                                    
046031,000022:    4732                                           COUNT*   $$/FCONS                              
046032,000023: 
046033,000024:                                                                                                  #  THE FOLLOWING TABLE OF 18 VALUES IS INDEXED.  DO NOT INSERT OR REMOVE ANY QUANTITIES.
046034,000025: 
046035,000026:    4732           37777        DPOSMAX            OCT      37777                                 #  MUST PRECEDE POSMAX
046036,000027:    4733           37777        POSMAX             OCT      37777                                 
046037,000028: 
046038,000029:    4734     4734               LIMITS             =        NEG1/2                                
046039,000030: 
046040,000031:    4734           57777        NEG1/2             OCT      -20000                                #  USED BY SIN ROUTINE (MUST BE TWO 
046041,000032:                                                                                                  #  LOCATIONS IN FRONT OF BIT14)
046042,000033: 
046043,000034:                                                                                                  #  BIT TABLE                                     
046044,000035: 
046045,000036:    4735           40000        BIT15              OCT      40000                                 
046046,000037:    4736           20000        BIT14              OCT      20000                                 
046047,000038:    4737           10000        BIT13              OCT      10000                                 
046048,000039:    4740           04000        BIT12              OCT      04000                                 
046049,000040:    4741           02000        BIT11              OCT      02000                                 
046050,000041:    4742           01000        BIT10              OCT      01000                                 
046051,000042:    4743           00400        BIT9               OCT      00400                                 
046052,000043:    4744           00200        BIT8               OCT      00200                                 
046053,000044:    4745           00100        BIT7               OCT      00100                                 
046054,000045:    4746           00040        BIT6               OCT      00040                                 
046055,000046:    4747           00020        BIT5               OCT      00020                                 
046056,000047:    4750           00010        BIT4               OCT      00010                                 
046057,000048:    4751           00004        BIT3               OCT      00004                                 
046058,000049:    4752           00002        BIT2               OCT      00002                                 
046059,000050:    4753           00001        BIT1               OCT      00001                                 
046060,000051: 
046061,000052:                                                                                                  #  DO NOT DESTROY THIS COMBINATION, SINCE IT IS USED IN DOUBLE PRECISION INSTRUCTIONS.
046062,000053:    4754           77777        NEG0               OCT      -0                                    #  MUST PRECEDE ZERO
046063,000054:    4755           00000        ZERO               OCT      0                                     #  MUST FOLLOW NEG0
046064,000055:                                                                                                  #  BIT1          OCT             00001
046065,000056:                                                                                                  #  NO.WDS        OCT             2                               INTERPRETER
046066,000057:                                                                                                  #  OCTAL3        OCT             3                               INTERPRETER
046067,000058:                                                                                                  #  R3D1          OCT             4                               PINBALL
046068,000059:    4756           00005        FIVE               OCT      5                                     
046069,000060:                                                                                                  #  REVCNT        OCT             6                               INTERPRETER
046070,000061:    4757           00007        SEVEN              OCT      7                                     
046071,000062:                                                                                                  #  BIT4          OCT             00010
046072,000063:                                                                                                  #  R2D1          OCT             11                              PINBALL
046073,000064:    4760     4320               OCT11              =        R2D1                                  #  P20S
046074,000065:                                                                                                  #  BINCON        DEC             10                              PINBALL         (OCTAL 12)
046075,000066:    4760           00013        ELEVEN             DEC      11         B-14                       
046076,000067:                                                                                                  #  OCT14         OCT             14                              ALARM AND ABORT (FILLER)
046077,000068:    4761           00015        OCT15              OCT      15                                    
046078,000069:                                                                                                  #  R1D1          OCT             16                              PINBALL
046079,000070:    4762           00017        LOW4               OCT      17                                    

Page 1088

046081,000072:                                                                                                  #  BIT5          OCT             00020
046082,000073:                                                                                                  #  ND1           OCT             21                              PINBALL
046083,000074:                                                                                                  #  VD1           OCT             23                              PINBALL
046084,000075:                                                                                                  #  OCT24         OCT             24                              SERVICE ROUTINES
046085,000076:                                                                                                  #  MD1           OCT             25                              PINBALL
046086,000077:    4763           00030        BITS4&5            OCT      30                                    
046087,000078:                                                                                                  #  OCT31         OCT             31                              SERVICE ROUTINES
046088,000079:    4764           00033        OCT33              OCT      33                                    
046089,000080:    4765     4764               DEC27              =        OCT33                                 
046090,000081:    4765           00035        OCT35              OCT      35                                    
046091,000082:    4766     4765               DEC29              =        OCT35                                 
046092,000083:    4766           00032        CALLCODE           OCT      00032                                 
046093,000084:                                                                                                  #  LOW5          OCT             37                              PINBALL
046094,000085:                                                                                                  #  33DEC         DEC             33                              PINBALL         (OCTAL 41)
046095,000086:                                                                                                  #  34DEC         DEC             34                              PINBALL         (OCTAL 42)
046096,000087:    4767           00045        TBUILDFX           DEC      37         B-14                       #  BUILDUP FOR CONVIENCE IN DAPTESTING
046097,000088:    4770           00046        TDECAYFX           DEC      38         B-14                       #  CONVENIENCE FOR DAPTESTING
046098,000089:                                                                                                  #  BIT6          OCT             00040
046099,000090:    4771           00050        OCT50              OCT      50                                    
046100,000091:    4772           00055        DEC45              DEC      45         B-14                       
046101,000092:    4773           00060        SUPER011           OCT      60                                    #  BITS FOR SUPERBNK SETTING 011.
046102,000093:    4774           00062        .5SEC              DEC      50         B-14                       
046103,000094:                                                                                                  #  BIT7          OCT             00100
046104,000095: 
046105,000096:    4775     4745               SUPER100           =        BIT7                                  #  BITS FOR SUPERBNK SETTING 100
046106,000097:                                                                                                  #  (LAST 4K OF ROPE)
046107,000098:    4775           00120        SUPER101           OCT      120                                   #  BITS FOR SUPERBNK SETTING 101
046108,000099:                                                                                                  #  OCT121        OCT             121                             SERVICE ROUTINES
046109,000100:                                                                                                  #  (FIRST 8K OF ACM)
046110,000101:    4776           00140        SUPER110           OCT      140                                   #  BITS FOR SUPERBNK SETTING 110.
046111,000102:                                                                                                  #  (LAST 8K OF ACM)
046112,000103:    4777           00144        1SEC               DEC      100        B-14                       
046113,000104:                                                                                                  #  LOW7          OCT             177                             INTERPRETER
046114,000105:                                                                                                  #  BIT8          OCT             00200
046115,000106:                                                                                                  #  OT215         OCT             215                             ALARM AND ABORT
046116,000107:                                                                                                  #  8,5           OCT             00220                           P20-P25 SUNDANCE
046117,000108:    5000           00310        2SECS              DEC      200        B-14                       
046118,000109:                                                                                                  #  LOW8          OCT             377                             PINBALL
046119,000110:                                                                                                  #  BIT9          OCT             00400
046120,000111:    5001           00401        GN/CCODE           OCT      00401                                 #  SET S/C CONTROL SWITCH TO G/N
046121,000112:    5002           00454        3SECS              DEC      300        B-14                       
046122,000113:    5003           00620        4SECS              DEC      400        B-14                       
046123,000114:    5004           00777        LOW9               OCT      777                                   
046124,000115:                                                                                                  #  BIT10         OCT             01000
046125,000116:                                                                                                  #  5.5DEGS       DEC             .03056                          P20-P25 SUNDANCE        (OCTAL 00765)
046126,000117:                                                                                                  #  OCT1103       OCT             1103                            ALARM AND ABORT
046127,000118:    5005           01124        C5/2               DEC      .0363551                              #                        (OCTAL 01124)
046128,000119:    5006           01211        V05N09             VN       0509                                  #  (SAME AS OCTAL 1211)
046129,000120:    5007           01400        OCT1400            OCT      01400                                 
046130,000121:    5010           01426        V06N22             VN       0622                                  

Page 1089

046132,000123:                                                                                                  #  MID5          OCT             1740                            PINBALL
046133,000124:    5011           01776        BITS2-10           OCT      1776                                  
046134,000125:    5012           01777        LOW10              OCT      1777                                  
046135,000126:                                                                                                  #  BIT11         OCT             02000
046136,000127:                                                                                                  #  2K+3          OCT             2003                            PINBALL
046137,000128:    5013           02177        LOW7+2K            OCT      2177                                  #  OP CODE MASK + BANK 1 FBANK SETTING.
046138,000129:    5014           02400        EBANK5             OCT      02400                                 
046139,000130:    5015           03000        PRIO3              OCT      03000                                 
046140,000131:    5016           03400        EBANK7             OCT      03400                                 
046141,000132:                                                                                                  #  LOW11         OCT             3777                            PINBALL
046142,000133:                                                                                                  #  BIT12         OCT             04000
046143,000134:                                                                                                  #  RELTAB        OCT             04025                           T4RUPT
046144,000135:    5017           05000        PRIO5              OCT      05000                                 
046145,000136:    5020           06000        PRIO6              OCT      06000                                 
046146,000137:    5021           07000        PRIO7              OCT      07000                                 
046147,000138: 
046148,000139:                                                                                                  #  BIT13         OCT             10000
046149,000140:                                                                                                  #                OCT             10003                           T4RUPT  RELTAB +1D
046150,000141:                                                                                                  #  13,7,2        OCT             10102                           P20-P25 SUNDANCE
046151,000142:    5022           11000        PRIO11             OCT      11000                                 
046152,000143:                                                                                                  #  PRIO12        OCT             12000                           BANKCALL
046153,000144:    5023           13000        PRIO13             OCT      13000                                 
046154,000145:    5024           14000        PRIO14             OCT      14000                                 
046155,000146:                                                                                                  #                OCT             14031                           T4RUPT  RELTAB +2D
046156,000147:    5025           15000        PRIO15             OCT      15000                                 
046157,000148:    5026           16000        PRIO16             OCT      16000                                 
046158,000149:                                                                                                  #  85DEGS        DEC             .45556                          P20-P25 SUNDANCE        (OCTAL 16450)
046159,000150:    5027           17000        PRIO17             OCT      17000                                 
046160,000151:    5030           17770        OCT17770           OCT      17770                                 
046161,000152:                                                                                                  #  BIT14         OCT             20000
046162,000153:                                                                                                  #                OCT             20033                           T4RUPT  RELTAB +3D
046163,000154:    5031           21000        PRIO21             OCT      21000                                 
046164,000155:    7713                                           BLOCK    03                                    
046165,000156:    7713                                           COUNT*   $$/FCONS                              
046166,000157:    7713           22000        PRIO22             OCT      22000                                 #  SERVICE ROUTINES
046167,000158:    7714           23000        PRIO23             OCT      23000                                 
046168,000159:    7715           24000        PRIO24             OCT      24000                                 
046169,000160:                                                                                                  #  5/8+1         OCT             24001                           SINGLE PRECISION SUBROUTINES
046170,000161:                                                                                                  #                OCT             24017                           T4RUPT  RELTAB +4D
046171,000162:    7716           25000        PRIO25             OCT      25000                                 
046172,000163:    7717           26000        PRIO26             OCT      26000                                 
046173,000164:    7720           27000        PRIO27             OCT      27000                                 
046174,000165:                                                                                                  #  CHRPRIO       OCT             30000                           PINBALL
046175,000166:                                                                                                  #                OCT             30036                           T4RUPT  RELTAB +5D
046176,000167:    7721           31000        PRIO31             OCT      31000                                 
046177,000168:    7722           31103        C1/2               DEC      .7853134                              #                        (OCTAL 31103)
046178,000169:    7723           32000        PRIO32             OCT      32000                                 
046179,000170:    7724           33000        PRIO33             OCT      33000                                 
046180,000171:    7725           34000        PRIO34             OCT      34000                                 
046181,000172:                                                                                                  #                OCT             34034                           T4RUPT  RELTAB +6D              

Page 1090

046183,000174:    7726           35000        PRIO35             OCT      35000                                 
046184,000175:    7727           36000        PRIO36             OCT      36000                                 
046185,000176:    7730           37000        PRIO37             OCT      37000                                 
046186,000177:    7731           37401        63/64+1            OCT      37401                                 
046187,000178:                                                                                                  #  MID7          OCT             37600                           PINBALL
046188,000179:    7732           37766        OCT37766           OCT      37766                                 
046189,000180:    7733           37774        OCT37774           OCT      37774                                 
046190,000181:    7734           37776        OCT37776           OCT      37776                                 
046191,000182:                                                                                                  #  DPOSMAX       OCT             37777
046192,000183:                                                                                                  #  BIT15         OCT             40000
046193,000184:                                                                                                  #  OCT40001      OCT             40001                           INTERPRETER (CS 1 INSTRUCTION)
046194,000185:    7735           40014        DLOADCOD           OCT      40014                                 
046195,000186:    7736           40015        DLOAD*             OCT      40015                                 
046196,000187:                                                                                                  #                OCT             40023                           T4RUPT  RELTAB +7D
046197,000188:    7737           40040        BIT15+6            OCT      40040                                 
046198,000189:    7740           40200        OCT40200           OCT      40200                                 
046199,000190:                                                                                                  #                OCT             44035                           T4RUPT  RELTAB +8D
046200,000191:                                                                                                  #                OCT             50037                           T4RUPT  RELTAB +9D
046201,000192:                                                                                                  #                OCT             54000                           T4RUPT  RELTAB +10D
046202,000193:    7741           57777        -BIT14             OCT      57777                                 
046203,000194:                                                                                                  #  RELTAB11      OCT             60000                           T4RUPT
046204,000195:    7742           65552        C3/2               DEC      -.3216147                             #                        (OCTAL 65552)
046205,000196:    7743           70000        13,14,15           OCT      70000                                 
046206,000197:    7744           73777        -1/8               OCT      73777                                 
046207,000198:    7745           74000        HIGH4              OCT      74000                                 
046208,000199:    7746           74056        -ENDERAS           DEC      -2001      B-14                       #                        (OCTAL 74056)
046209,000200:                                                                                                  #  HI5           OCT             76000                           PINBALL
046210,000201:    7747           77700        HIGH9              OCT      77700                                 
046211,000202:                                                                                                  #  -ENDVAC       DEC             -45                             INTERPRETER             (OCTAL 77722)
046212,000203:                                                                                                  #  -OCT10        OCT             -10                                                      (OCT 77767)
046213,000204:                                                                                                  #  NEG4          DEC             -4                                                      (OCTAL 77773)
046214,000205:    7750           77774        NEG3               DEC      -3         B-14                       
046215,000206:    7751           77775        NEG2               OCT      77775                                 
046216,000207:    7752           77776        NEGONE             DEC      -1         B-14                       
046217,000208: 

Page 1091

046219,000210: 
046220,000211:                                                                                                  #  DEFINED BY EQUALS
046221,000212: 
046222,000213:                                                                                                  #  IT WOULD BE TO THE USERS ADVANTAGE TO OCCASIONALLY CHECK ANY OF THESE SYMBOLS IN ORDER TO PREVENT ANY
046223,000214:                                                                                                  #  ACCIDENTAL DEFINITION CHANGES.
046224,000215: 
046225,000216:    7753     7752               MINUS1             =        NEG1                                  
046226,000217:    7753     7752               NEG1               =        NEGONE                                
046227,000218:    7753     4753               ONE                =        BIT1                                  
046228,000219:    7753     4752               TWO                =        BIT2                                  
046229,000220:    7753     6250               THREE              =        OCTAL3                                
046230,000221:    7753     6250               LOW2               =        THREE                                 
046231,000222:    7753     4751               FOUR               =        BIT3                                  
046232,000223:    7753     6245               SIX                =        REVCNT                                
046233,000224:    7753     4757               LOW3               =        SEVEN                                 
046234,000225:    7753     4750               EIGHT              =        BIT4                                  
046235,000226:    7753     4320               NINE               =        R2D1                                  
046236,000227:    7753     4363               TEN                =        BINCON                                
046237,000228:    7753     4760               NOUTCON            =        ELEVEN                                
046238,000229:    7753     4360               OCT23              =        VD1                                   
046239,000230:    7753     4362               OCT25              =        MD1                                   
046240,000231:    7753     4742               PRIO1              =        BIT10                                 
046241,000232:    7753     5007               EBANK3             =        OCT1400                               
046242,000233:    7753     4741               PRIO2              =        BIT11                                 
046243,000234:    7753     4775               OCT120             =        SUPER101                              
046244,000235:    7753     4776               OCT140             =        SUPER110                              
046245,000236:    7753     4741               2K                 =        BIT11                                 
046246,000237:    7753     4741               EBANK4             =        BIT11                                 
046247,000238:    7753     4740               PRIO4              =        BIT12                                 
046248,000239:    7753     5015               EBANK6             =        PRIO3                                 
046249,000240:    7753     4737               QUARTER            =        BIT13                                 
046250,000241:    7753     4737               PRIO10             =        BIT13                                 
046251,000242:    7753     7666               OCT10001           =        CCSL                                  
046252,000243:    7753     4736               POS1/2             =        HALF                                  
046253,000244:    7753     4736               PRIO20             =        BIT14                                 
046254,000245:    7753     4736               HALF               =        BIT14                                 
046255,000246:    7753     4355               PRIO30             =        CHRPRIO                               
046256,000247:    7753     4355               BIT13-14           =        PRIO30                                #  INTERPRETER USES IN PROCESSING STORECODE
046257,000248:    7753     6474               OCT30002           =        TLOAD      +1                         
046258,000249:    7753     7725               B12T14             =        PRIO34                                
046259,000250:    7753     4735               NEGMAX             =        BIT15                                 
046260,000251:    7753     4735               VLOADCOD           =        BIT15                                 
046261,000252:    7753     6112               VLOAD*             =        OCT40001                              
046262,000253:    7753     4101               OCT60000           =        RELTAB11                              
046263,000254:    7753     4350               BANKMASK           =        HI5                                   
046264,000255: 

End of include-file FIXED-FIXED_CONSTANT_POOL.agc.  Parent file is MAIN.agc