Source Code

This is an attempt to recreate Luminary 99 Rev 2, otherwise known as LUM99R2, from Luminary 99 Rev 1 and ephemeris data from Luminary 116. The differences are confined to the last 10-12 lines of the CONTROLLED CONSTANTS. Luminary 99 Rev 1 source-code was transcribed from a printout in the MIT Museum, while Luminary 116 source code was transcribed from a printout belonging to Don Eyles. AGC developer James Kernan, the "rope mother" for the Apollo 11 Lunar Module's AGC, explains as follows: "At the last minute, Dan Lickly, our chief engineer, appeared with ephemerides updates and it took two tries to get it right. The result was that we created Lum99 Revision 1 and Lum99 Revision 2." It is suspected that the former is what's in the MIT Museum, and the latter is what we are trying to recreate here. As for which revision actually flew in Apollo 11, all of the other available surviving evidence points to Rev 1 rather than to Rev 2, so we're just not sure!

054876,000002:                                                                                                  ## Copyright:   Public domain.
054877,000003:                                                                                                  ## Filename:    RESTARTS_ROUTINE.agc
054878,000004:                                                                                                  ## Purpose:     Part of the source code for Luminary 1A build 099.
054879,000005:                                                                                                  ##              It is part of the source code for the Lunar Module's (LM)
054880,000006:                                                                                                  ##              Apollo Guidance Computer (AGC), for Apollo 11.
054881,000007:                                                                                                  ## Assembler:   yaYUL
054882,000008:                                                                                                  ## Contact:     Onno Hommes <ohommes@cmu.edu>.
054883,000009:                                                                                                  ## Website:     www.ibiblio.org/apollo.
054884,000010:                                                                                                  ## Pages:       1303-1309
054885,000011:                                                                                                  ## Mod history: 2009-05-27 OH   Transcribed from page images.
054886,000012:                                                                                                  ##              2016-12-18 RSB  Proofed text comments with octopus/ProoferComments
054887,000013:                                                                                                  ##                              and corrected the errors found.
054888,000014:                                                                                                  ##              2017-03-03 RSB  Snapshot of Luminary 99 Rev 1. 
054889,000015:                                                                                                  ##              2017-03-14 RSB  Comment-text fixes noted in proofing Luminary 116.
054890,000016:                                                                                                  ##              2017-03-16 RSB  Comment-text fixes identified in 5-way
054891,000017:                                                                                                  ##                              side-by-side diff of Luminary 69/99/116/131/210.
054892,000018: 

Page 1303

054894,000020: 01,3526                                           BANK     01                                    
054895,000021: 01,2000                                           SETLOC   RESTART                               
054896,000022: 01,2000                                           BANK                                           
054897,000023: 
054898,000024: 01,3526  E3,1436                                  EBANK=   PHSNAME1                              #  GOPROG MUST SWITCH TO THIS EBANK
054899,000025: 
054900,000026: 01,3526                                           COUNT*   $$/RSROU                              
054901,000027: 01,3526           30161        RESTARTS           CA       MPAC       +5                         #  GET GROUP NUMBER -1
054902,000028: 01,3527           60000                           DOUBLE                                         #  SAVE FOR INDEXING
054903,000029: 01,3530           54155                           TS       TEMP2G                                
054904,000030: 
054905,000031: 01,3531           33770                           CA       PHS2CADR                              #  SET UP EXIT IN CASE IT IS AN EVEN
054906,000032: 01,3532           54157                           TS       TEMPSWCH                              #  TABLE PHASE
054907,000033: 
054908,000034: 01,3533           33565                           CA       RTRNCADR                              #  TO SAVE TIME ASSUME IT WILL GET NEXT
054909,000035: 01,3534           54707                           TS       GOLOC      +2                         #  GROUP AFTER THIS
054910,000036: 
054911,000037: 01,3535           30154                           CA       TEMPPHS                               
054912,000038: 01,3536           75007                           MASK     OCT1400                               
054913,000039: 01,3537           10000                           CCS      A                                     #  IS IT A VARIABLE OR TABLE RESTART
054914,000040: 01,3540           13551                           TCF      ITSAVAR                               #  IT:S A VARIABLE RESTART
054915,000041: 
054916,000042: 01,3541           10154        GETPART2           CCS      TEMPPHS                               #  IS IT AN X.1 RESTART
054917,000043: 01,3542           10000                           CCS      A                                     
054918,000044: 01,3543           13651                           TCF      ITSATBL                               #  NO, ITS A TABLE RESTART
054919,000045: 
054920,000046: 01,3544           35024                           CA       PRIO14                                #  IT IS AN X.1 RESTART, THEREFORE START
054921,000047: 01,3545           05105                           TC       FINDVAC                               #  THE DISPLAY RESTART JOB
054922,000048: 01,3546  E3,1400                                  EBANK=   LST1                                  
054923,000049: 01,3546           03037 20103                     2CADR    INITDSP                               
054924,000050: 
054925,000051: 01,3550           03565                           TC       RTRNCADR                              #  FINISHED WITH THIS GROUP, GET NEXT ONE
054926,000052: 
054927,000053: 01,3551           75007        ITSAVAR            MASK     OCT1400                               #  IS IT TYPE B ?
054928,000054: 01,3552           10000                           CCS      A                                     
054929,000055: 01,3553           13622                           TCF      ITSLIKEB                              #  YES, IT IS TYPE B
054930,000056: 
054931,000057: 01,3554           00006                           EXTEND                                         #  STORE THE JOB (OR TASK) 2CADR FOR EXIT
054932,000058: 01,3555           50155                           NDX      TEMP2G                                
054933,000059: 01,3556           31437                           DCA      PHSNAME1                              
054934,000060: 01,3557           52706                           DXCH     GOLOC                                 
054935,000061: 
054936,000062: 01,3560           30154                           CA       TEMPPHS                               #  SEE IF THIS IS A JOB, TASK, OR A LONGCAL
054937,000063: 01,3561           74757                           MASK     OCT7                                  
054938,000064: 01,3562           67746                           AD       MINUS2                                
054939,000065: 01,3563           10000                           CCS      A                                     
054940,000066: 01,3564           13734                           TCF      ITSLNGCL                              #  ITS A LONGCALL
054941,000067: 
054942,000068: 01,3565           04631        RTRNCADR           TC       SWRETURN                              #  CANT GET HERE

Page 1304

054944,000070: 01,3566           13570                           TCF      ITSAWAIT                              
054945,000071: 
054946,000072: 01,3567           13635                           TCF      ITSAJOB                               #  ITS A JOB
054947,000073: 
054948,000074: 01,3570           33774        ITSAWAIT           CA       WTLTCADR                              #  SET UP WAITLIST CALL
054949,000075: 01,3571           54704                           TS       GOLOC      -1                         
054950,000076: 
054951,000077: 01,3572           50155                           NDX      TEMP2G                                #  DIRECTLY STORED
054952,000078: 01,3573           31054                           CA       PHSPRDT1                              
054953,000079: 01,3574           10000        TIMETEST           CCS      A                                     #  IS IT AN IMMEDIATE RESTART
054954,000080: 01,3575           24000                           INCR     A                                     #  NO,
054955,000081: 01,3576           13601                           TCF      FINDTIME                              #  FIND OUT WHEN IT SHOULD BEGIN
054956,000082: 
054957,000083: 01,3577           15436                           TCF      ITSINDIR                              #  STORED INDIRECTLY
054958,000084: 
054959,000085: 01,3600           13620                           TCF      IMEDIATE                              #  IT WANTS AN IMMEDIATE RESTART
054960,000086: 
054961,000087:                                                                                                  #  ***** THIS MUST BE IN FIXED FIXED *****
054962,000088: 
054963,000089:    5436                                           BLOCK    02                                    
054964,000090:    4000                                           SETLOC   FFTAG2                                
054965,000091:    4000                                           BANK                                           
054966,000092: 
054967,000093:    5436                                           COUNT*   $$/RSROU                              
054968,000094:    5436           22706        ITSINDIR           LXCH     GOLOC      +1                         #  GET THE CORRECT E BANK IN CASE THIS IS
054969,000095:    5437           22006                           LXCH     BB                                    #  SWITCHED ERRASIBLE
054970,000096: 
054971,000097:    5440           50000                           NDX      A                                     #  GET THE TIME INDIRECTLY
054972,000098:    5441           30001                           CA       1                                     
054973,000099: 
054974,000100:    5442           22006                           LXCH     BB                                    #  RESTORE THE BB AND GOLOC
054975,000101:    5443           22706                           LXCH     GOLOC      +1                         
054976,000102: 
054977,000103:    5444           13601                           TCF      FINDTIME                              #  FIND OUT WHEN IT SHOULD BEGIN
054978,000104: 
054979,000105:                                                                                                  #  ***** YOU MAY RETURN TO SWITCHED FIXED *****
054980,000106: 
054981,000107: 01,3601                                           BANK     01                                    
054982,000108: 01,2000                                           SETLOC   RESTART                               
054983,000109: 01,2000                                           BANK                                           
054984,000110: 
054985,000111: 01,3601                                           COUNT*   $$/RSROU                              
054986,000112: 01,3601           40000        FINDTIME           COM                                            #  MAKE NEGITIVE SINCE IT WILL BE SUBTRACTD
054987,000113: 01,3602           54001                           TS       L                                     #  AND SAVE
054988,000114: 01,3603           50155                           NDX      TEMP2G                                
054989,000115: 01,3604           41053                           CS       TBASE1                                
054990,000116: 01,3605           00006                           EXTEND                                         
054991,000117: 01,3606           60025                           SU       TIME1                                 
054992,000118: 01,3607           10000                           CCS      A                                     
054993,000119: 01,3610           40000                           COM                                            

Page 1305

054995,000121: 01,3611           67731                           AD       OCT37776                              
054996,000122: 01,3612           64753                           AD       ONE                                   
054997,000123: 01,3613           60001                           AD       L                                     
054998,000124: 01,3614           10000                           CCS      A                                     
054999,000125: 01,3615           34755                           CA       ZERO                                  
055000,000126: 01,3616           13620                           TCF      +2                                    
055001,000127: 01,3617           13620                           TCF      +1                                    
055002,000128: 01,3620           64753        IMEDIATE           AD       ONE                                   
055003,000129: 01,3621           00704                           TC       GOLOC      -1                         
055004,000130: 01,3622           33565        ITSLIKEB           CA       RTRNCADR                              #  TYPE B, SO STORE RETURN IN
055005,000131: 01,3623           54157                           TS       TEMPSWCH                              #  TEMPSWCH IN CASE OF AN EVEN PHASE
055006,000132: 
055007,000133: 01,3624           33771                           CA       PRT2CADR                              #  SET UP EXIT TO GET TABLE PART OF THIS
055008,000134: 01,3625           54707                           TS       GOLOC      +2                         #  VARIABLE TYPE OF PHASE
055009,000135: 
055010,000136: 01,3626           30154                           CA       TEMPPHS                               #  MAKE THE PHASE LOOK RIGHT FOR THE TABLE
055011,000137: 01,3627           76074                           MASK     OCT177                                #  PART OF THIS VARIABLE PHASE
055012,000138: 01,3630           54154                           TS       TEMPPHS                               
055013,000139: 
055014,000140: 01,3631           00006                           EXTEND                                         
055015,000141: 01,3632           50155                           NDX      TEMP2G                                #  OBTAIN THE JOB:S 2CADR
055016,000142: 01,3633           31437                           DCA      PHSNAME1                              
055017,000143: 01,3634           52706                           DXCH     GOLOC                                 
055018,000144: 
055019,000145: 01,3635           50155        ITSAJOB            NDX      TEMP2G                                #  NOW ADD THE PRIORITY AND LET:S GO
055020,000146: 01,3636           31054                           CA       PHSPRDT1                              
055021,000147: 01,3637           54704        CHKNOVAC           TS       GOLOC      -1                         #  SAVE PRIO UNTIL WE SEE IF ITS
055022,000148: 01,3640           00006                           EXTEND                                         #  A FINDVAC OR A NOVAC
055023,000149: 01,3641           63645                           BZMF     ITSNOVAC                              
055024,000150: 
055025,000151: 01,3642           33773                           CAF      FVACCADR                              #  POSITIVE, SET UP FINDVAC CALL.
055026,000152: 01,3643           56704                           XCH      GOLOC      -1                         #  PICK UP PRIO,
055027,000153: 01,3644           00704                           TC       GOLOC      -1                         #  AND GO
055028,000154: 
055029,000155: 01,3645           33775        ITSNOVAC           CAF      NOVACADR                              #  NEGATIVE,
055030,000156: 01,3646           56704                           XCH      GOLOC      -1                         #  SET UP NOVAC CALL,
055031,000157: 01,3647           40000                           COM                                            #  CORRECT PRIO,
055032,000158: 01,3650           00704                           TC       GOLOC      -1                         #  AND GO
055033,000159: 
055034,000160: 01,3651           54020        ITSATBL            TS       CYR                                   #  FIND OUT IF THE PHASE IS ODD OR EVEN
055035,000161: 01,3652           10020                           CCS      CYR                                   
055036,000162: 01,3653           13654                           TCF      +1                                    #  IT:S EVEN
055037,000163: 01,3654           13752                           TCF      ITSEVEN                               
055038,000164: 
055039,000165: 01,3655           33565                           CA       RTRNCADR                              #  IN CASE THIS IS THE SECOND PART OF A
055040,000166: 01,3656           54707                           TS       GOLOC      +2                         #  TYPE B RESTART, WE NEED PROPER EXIT
055041,000167: 
055042,000168: 01,3657           30154                           CA       TEMPPHS                               #  SET UP POINTER FOR FINDING OUR PLACE IN
055043,000169: 01,3660           54021                           TS       SR                                    #  THE RESTART TABLES
055044,000170: 01,3661           60021                           AD       SR                                    

Page 1306

055046,000172: 01,3662           50155                           NDX      TEMP2G                                
055047,000173: 01,3663           62003                           AD       SIZETAB    +1                         
055048,000174: 01,3664           54156                           TS       POINTER                               
055049,000175: 
055050,000176: 01,3665           00006        CONTBL2            EXTEND                                         #  FIND OUT WHAT:S IN THE TABLE
055051,000177: 01,3666           50156                           NDX      POINTER                               
055052,000178: 01,3667           32002                           DCA      CADRTAB                               #  GET THE 2CADR
055053,000179: 
055054,000180: 01,3670           22706                           LXCH     GOLOC      +1                         #  STORE THE BB INFORMATION
055055,000181: 
055056,000182: 01,3671           10000                           CCS      A                                     #  IS IT A JOB OR IS IT TIMED
055057,000183: 01,3672           24000                           INCR     A                                     #  POSITIVE, MUST BE A JOB
055058,000184: 01,3673           13746                           TCF      ITSAJOB2                              
055059,000185: 
055060,000186: 01,3674           24000                           INCR     A                                     #  MUST BE EITHER A WAITLIST OR LONGCALL
055061,000187: 01,3675           54705                           TS       GOLOC                                 #  LET-S STORE THE CORRECT CADR
055062,000188: 
055063,000189: 01,3676           33774                           CA       WTLTCADR                              #  SET UP OUR EXIT TO WAITLIST
055064,000190: 01,3677           54704                           TS       GOLOC      -1                         
055065,000191: 
055066,000192: 01,3700           30706                           CA       GOLOC      +1                         #  NOW FIND OUT IF IT IS A WAITLIST CALL
055067,000193: 01,3701           74742                           MASK     BIT10                                 #  THIS SHOULD BE ONE IF WE HAVE -BB
055068,000194: 01,3702           10000                           CCS      A                                     #  FOR THAT MATTER SO SHOULD BE BITS 9,8,7,
055069,000195:                                                                                                  #  6,5, AND LAST BUT NOT LEAST (PERHAPS NOT
055070,000196:                                                                                                  #  IN IMPORTANCE ANYWAY.  BIT 4
055071,000197: 01,3703           13741                           TCF      ITSWTLST                              #  IT IS A WAITLIST CALL
055072,000198: 
055073,000199: 01,3704           50156                           NDX      POINTER                               #  OBTAIN THE ORIGINAL DELTA T
055074,000200: 01,3705           32000                           CA       PRDTTAB                               #  ADDRESS FOR THIS LONGCALL
055075,000201: 
055076,000202: 01,3706           15445                           TCF      ITSLGCL1                              #  NOW GO GET THE DELTA TIME
055077,000203: 
055078,000204:                                                                                                  #  ***** THIS MUST BE IN FIXED FIXED *****
055079,000205: 
055080,000206:    5445                                           BLOCK    02                                    
055081,000207:    4000                                           SETLOC   FFTAG2                                
055082,000208:    4000                                           BANK                                           
055083,000209: 
055084,000210:    5445                                           COUNT*   $$/RSROU                              
055085,000211:    5445           22706        ITSLGCL1           LXCH     GOLOC      +1                         #  OBTAIN THE CORRECT E BANK
055086,000212:    5446           22006                           LXCH     BB                                    
055087,000213:    5447           22706                           LXCH     GOLOC      +1                         #  AND PRESERVE OUR E AND F BANKS
055088,000214: 
055089,000215:    5450           00006                           EXTEND                                         #  GET THE DELTA TIME
055090,000216:    5451           50000                           NDX      A                                     
055091,000217:    5452           30001                           DCA      0                                     
055092,000218: 
055093,000219:    5453           22706                           LXCH     GOLOC      +1                         #  RESTORE OUR E AND F BANK
055094,000220:    5454           22006                           LXCH     BB                                    #  RESTORE THE TASKS E AND F BANKS
055095,000221:    5455           22706                           LXCH     GOLOC      +1                         #  AND PRESERVE OUR L

Page 1307

055097,000223:    5456           13707                           TCF      ITSLGCL2                              #  NOW LET:S PROCESS THIS LONGCALL
055098,000224: 
055099,000225:                                                                                                  #  ***** YOU MAY RETURN TO SWITCHED FIXED *****
055100,000226: 
055101,000227: 01,3707                                           BANK     01                                    
055102,000228: 01,2000                                           SETLOC   RESTART                               
055103,000229: 01,2000                                           BANK                                           
055104,000230: 
055105,000231: 01,3707                                           COUNT*   $$/RSROU                              
055106,000232: 01,3707           53154        ITSLGCL2           DXCH     LONGTIME                              
055107,000233: 
055108,000234: 01,3710           00006                           EXTEND                                         #  CALCULATE TIME LEFT
055109,000235: 01,3711           40025                           DCS      TIME2                                 
055110,000236: 01,3712           21154                           DAS      LONGTIME                              
055111,000237: 01,3713           00006                           EXTEND                                         
055112,000238: 01,3714           31152                           DCA      LONGBASE                              
055113,000239: 01,3715           21154                           DAS      LONGTIME                              
055114,000240: 
055115,000241: 01,3716           11153                           CCS      LONGTIME                              #  FIND OUT HOW THIS SHOULD BE RESTARTED
055116,000242: 01,3717           13727                           TCF      LONGCLCL                              
055117,000243: 01,3720           13722                           TCF      +2                                    
055118,000244: 01,3721           13615                           TCF      IMEDIATE   -3                         
055119,000245: 01,3722           11154                           CCS      LONGTIME   +1                         
055120,000246: 01,3723           13727                           TCF      LONGCLCL                              
055121,000247: 01,3724           13725                           NOOP                                           #  CAN:T GET HERE *********
055122,000248: 01,3725           13615                           TCF      IMEDIATE   -3                         
055123,000249: 01,3726           13620                           TCF      IMEDIATE                              
055124,000250: 
055125,000251: 01,3727           33772        LONGCLCL           CA       LGCLCADR                              #  WE WILL GO TO LONGCALL
055126,000252: 01,3730           54704                           TS       GOLOC      -1                         
055127,000253: 
055128,000254: 01,3731           00006                           EXTEND                                         #  PREPARE OUR ENTRY TO LONGCALL
055129,000255: 01,3732           31154                           DCA      LONGTIME                              
055130,000256: 01,3733           00704                           TC       GOLOC      -1                         
055131,000257: 
055132,000258: 01,3734           33774        ITSLNGCL           CA       WTLTCADR                              #  ASSUME IT WILL GO TO WAITLIST
055133,000259: 01,3735           54704                           TS       GOLOC      -1                         
055134,000260: 
055135,000261: 01,3736           50155                           NDX      TEMP2G                                
055136,000262: 01,3737           41054                           CS       PHSPRDT1                              #  GET THE DELTA T ADDRESS
055137,000263: 
055138,000264: 01,3740           15445                           TCF      ITSLGCL1                              #  NOW GET THE DELTA TIME
055139,000265: 
055140,000266: 01,3741           40706        ITSWTLST           CS       GOLOC      +1                         #  CORRECT THE BBCON INFORMATION
055141,000267: 01,3742           54706                           TS       GOLOC      +1                         
055142,000268: 
055143,000269: 01,3743           50156                           NDX      POINTER                               #  GET THE DT AND FIND OUT IF IT WAS STORED
055144,000270: 01,3744           32000                           CA       PRDTTAB                               #  DIRECTLY OR INDIRECTLY
055145,000271: 
055146,000272: 01,3745           13574                           TCF      TIMETEST                              #  FIND OUT HOW THE TIME IS STORED
055147,000273: 

Page 1308

055149,000275: 01,3746           56705        ITSAJOB2           XCH      GOLOC                                 #  STORE THE CADR
055150,000276: 
055151,000277: 01,3747           50156                           NDX      POINTER                               #  ADD THE PRIORITY AND LET:S GO
055152,000278: 01,3750           32000                           CA       PRDTTAB                               
055153,000279: 
055154,000280: 01,3751           13637                           TCF      CHKNOVAC                              
055155,000281: 
055156,000282: 01,3752           30157        ITSEVEN            CA       TEMPSWCH                              #  SET UP FOR EITHER THE SECOND PART OF THE
055157,000283: 01,3753           54707                           TS       GOLOC      +2                         #  TABLE, OR A RETURN FOR THE NEXT GROUP
055158,000284: 
055159,000285: 01,3754           50155                           NDX      TEMP2G                                #  SET UP POINTER FOR OUR LOCATION WITHIN
055160,000286: 01,3755           32002                           CA       SIZETAB                               #  THE TABLE
055161,000287: 01,3756           60154                           AD       TEMPPHS                               #  THIS MAY LOOK BAD BUT LET:S SEE YOU DO
055162,000288: 01,3757           60154                           AD       TEMPPHS                               #  BETTER IN TIME OR NUMBERR OF LOCATIONS
055163,000289: 01,3760           60154                           AD       TEMPPHS                               
055164,000290: 01,3761           54156                           TS       POINTER                               
055165,000291: 
055166,000292: 01,3762           13665                           TCF      CONTBL2                               #  NOW PROCESS WHAT IS IN THE TABLE
055167,000293: 
055168,000294: 01,3763           36245        PHSPART2           CA       THREE                                 #  SET THE POINTER FOR THE SECOND HALF OF
055169,000295: 01,3764           26156                           ADS      POINTER                               #  THE TABLE
055170,000296: 
055171,000297: 01,3765           33565                           CA       RTRNCADR                              #  THIS WILL BE OUR LAST TIME THROUGH THE
055172,000298: 01,3766           54707                           TS       GOLOC      +2                         #  EVEN TABLE, SO AFTER IT GET THE NEXT
055173,000299:                                                                                                  #  GROUP
055174,000300: 01,3767           13665                           TCF      CONTBL2                               #  SO LET:S GET THE SECOND ENTRY IN THE TBL
055175,000301: 
055176,000302: 01,3770     0154               TEMPPHS            EQUALS   MPAC                                  
055177,000303: 01,3770     0155               TEMP2G             EQUALS   MPAC       +1                         
055178,000304: 01,3770     0156               POINTER            EQUALS   MPAC       +2                         
055179,000305: 01,3770     0157               TEMPSWCH           EQUALS   MPAC       +3                         
055180,000306: 01,3770     0705               GOLOC              EQUALS   VAC5       +20D                       
055181,000307: 01,3770     7746               MINUS2             EQUALS   NEG2                                  
055182,000308: 01,3770     6074               OCT177             EQUALS   LOW7                                  
055183,000309: 
055184,000310: 01,3770           03763        PHS2CADR           GENADR   PHSPART2                              
055185,000311: 01,3771           03541        PRT2CADR           GENADR   GETPART2                              
055186,000312: 01,3772           05277        LGCLCADR           GENADR   LONGCALL                              
055187,000313: 01,3773           05105        FVACCADR           GENADR   FINDVAC                               
055188,000314: 01,3774           05203        WTLTCADR           GENADR   WAITLIST                              
055189,000315: 01,3775           05072        NOVACADR           GENADR   NOVAC                                 
055190,000316: 
055191,000317: 

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