Notations on the program listing read, in part:
GAP: ASSEMBLE REVISION 116 OF AGC PROGRAM LUMINARY BY NASA 2021112-071 19:09 AUG. 11,1969Note that the date is the date of the printout, not the date of the program revision.
Source Code
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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. 11,1969Note that the date is the date of the printout, not the date of the program revision. |
054934,000002: ## Copyright: Public domain.
054935,000003: ## Filename: RESTARTS_ROUTINE.agc
054936,000004: ## Purpose: A section of Luminary revision 116.
054937,000005: ## It is part of the source code for the Lunar Module's (LM)
054938,000006: ## Apollo Guidance Computer (AGC) for Apollo 12.
054939,000007: ## This file is intended to be a faithful transcription, except
054940,000008: ## that the code format has been changed to conform to the
054941,000009: ## requirements of the yaYUL assembler rather than the
054942,000010: ## original YUL assembler.
054943,000011: ## Reference: pp. 1293-1298
054944,000012: ## Assembler: yaYUL
054945,000013: ## Contact: Ron Burkey <info@sandroid.org>.
054946,000014: ## Website: www.ibiblio.org/apollo/index.html
054947,000015: ## Mod history: 2017-01-22 MAS Created from Luminary 99.
054948,000016: ## 2017-03-06 RRB Updated for Luminary 116.
054949,000017: ## 2017-03-14 RSB Proofed comment text via 3-way diff vs
054950,000018: ## Luminary 99 and 131.
054951,000019: ## 2017-03-16 RSB Comment-text fixes identified in 5-way
054952,000020: ## side-by-side diff of Luminary 69/99/116/131/210.
054953,000021:
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Page 1293 |
054955,000023: 01,3527 BANK 01
054956,000024: 01,2000 SETLOC RESTART
054957,000025: 01,2000 BANK
054958,000026:
054959,000027: 01,3527 E3,1436 EBANK= PHSNAME1 # GOPROG MUST SWITCH TO THIS EBANK
054960,000028:
054961,000029: 01,3527 COUNT* $$/RSROU
054962,000030: 01,3527 30161 RESTARTS CA MPAC +5 # GET GROUP NUMBER -1
054963,000031: 01,3530 60000 DOUBLE # SAVE FOR INDEXING
054964,000032: 01,3531 54155 TS TEMP2G
054965,000033:
054966,000034: 01,3532 33771 CA PHS2CADR # SET UP EXIT IN CASE IT IS AN EVEN
054967,000035: 01,3533 54157 TS TEMPSWCH # TABLE PHASE
054968,000036:
054969,000037: 01,3534 33566 CA RTRNCADR # TO SAVE TIME ASSUME IT WILL GET NEXT
054970,000038: 01,3535 54707 TS GOLOC +2 # GROUP AFTER THIS
054971,000039:
054972,000040: 01,3536 30154 CA TEMPPHS
054973,000041: 01,3537 75007 MASK OCT1400
054974,000042: 01,3540 10000 CCS A # IS IT A VARIABLE OR TABLE RESTART
054975,000043: 01,3541 13552 TCF ITSAVAR # IT:S A VARIABLE RESTART
054976,000044:
054977,000045: 01,3542 10154 GETPART2 CCS TEMPPHS # IS IT AN X.1 RESTART
054978,000046: 01,3543 10000 CCS A
054979,000047: 01,3544 13652 TCF ITSATBL # NO, ITS A TABLE RESTART
054980,000048:
054981,000049: 01,3545 35024 CA PRIO14 # IT IS AN X.1 RESTART, THEREFORE START
054982,000050: 01,3546 05105 TC FINDVAC # THE DISPLAY RESTART JOB
054983,000051: 01,3547 E3,1400 EBANK= LST1
054984,000052: 01,3547 03040 20103 2CADR INITDSP
054985,000053:
054986,000054: 01,3551 03566 TC RTRNCADR # FINISHED WITH THIS GROUP, GET NEXT ONE
054987,000055:
054988,000056: 01,3552 75007 ITSAVAR MASK OCT1400 # IS IT TYPE B ?
054989,000057: 01,3553 10000 CCS A
054990,000058: 01,3554 13623 TCF ITSLIKEB # YES,IT IS TYPE B
054991,000059:
054992,000060: 01,3555 00006 EXTEND # STORE THE JOB (OR TASK) 2CADR FOR EXIT
054993,000061: 01,3556 50155 NDX TEMP2G
054994,000062: 01,3557 31437 DCA PHSNAME1
054995,000063: 01,3560 52706 DXCH GOLOC
054996,000064:
054997,000065: 01,3561 30154 CA TEMPPHS # SEE IF THIS IS A JOB, TASK, OR A LONGCAL
054998,000066: 01,3562 74757 MASK OCT7
054999,000067: 01,3563 67751 AD MINUS2
055000,000068: 01,3564 10000 CCS A
055001,000069: 01,3565 13735 TCF ITSLNGCL # ITS A LONGCALL
055002,000070:
055003,000071: 01,3566 04631 RTRNCADR TC SWRETURN # CANT GET HERE
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Page 1294 |
055005,000073: 01,3567 13571 TCF ITSAWAIT
055006,000074:
055007,000075: 01,3570 13636 TCF ITSAJOB # ITS A JOB
055008,000076:
055009,000077: 01,3571 33775 ITSAWAIT CA WTLTCADR # SET UP WAITLIST CALL
055010,000078: 01,3572 54704 TS GOLOC -1
055011,000079:
055012,000080: 01,3573 50155 NDX TEMP2G # DIRECTLY STORED
055013,000081: 01,3574 31053 CA PHSPRDT1
055014,000082: 01,3575 10000 TIMETEST CCS A # IS IT AN IMMEDIATE RESTART
055015,000083: 01,3576 24000 INCR A # NO,
055016,000084: 01,3577 13602 TCF FINDTIME # FIND OUT WHEN IT SHOULD BEGIN
055017,000085:
055018,000086: 01,3600 15436 TCF ITSINDIR # STORED INDIRECTLY
055019,000087:
055020,000088: 01,3601 13621 TCF IMEDIATE # IT WANTS AN IMMEDIATE RESTART
055021,000089:
055022,000090: # ***** THIS MUST BE IN FIXED FIXED *****
055023,000091:
055024,000092: 5436 BLOCK 02
055025,000093: 4000 SETLOC FFTAG2
055026,000094: 4000 BANK
055027,000095:
055028,000096: 5436 COUNT* $$/RSROU
055029,000097: 5436 22706 ITSINDIR LXCH GOLOC +1 # GET THE CORRECT E BANK IN CASE THIS IS
055030,000098: 5437 22006 LXCH BB # SWITCHED ERRASIBLE
055031,000099:
055032,000100: 5440 50000 NDX A # GET THE TIME INDIRECTLY
055033,000101: 5441 30001 CA 1
055034,000102:
055035,000103: 5442 22006 LXCH BB # RESTORE THE BB AND GOLOC
055036,000104: 5443 22706 LXCH GOLOC +1
055037,000105:
055038,000106: 5444 13602 TCF FINDTIME # FIND OUT WHEN IT SHOULD BEGIN
055039,000107:
055040,000108: # ***** YOU MAY RETURN TO SWITCHED FIXED *****
055041,000109:
055042,000110: 01,3602 BANK 01
055043,000111: 01,2000 SETLOC RESTART
055044,000112: 01,2000 BANK
055045,000113:
055046,000114: 01,3602 COUNT* $$/RSROU
055047,000115: 01,3602 40000 FINDTIME COM # MAKE NEGITIVE SINCE IT WILL BE SUBTRACTD
055048,000116: 01,3603 54001 TS L # AND SAVE
055049,000117: 01,3604 50155 NDX TEMP2G
055050,000118: 01,3605 41052 CS TBASE1
055051,000119: 01,3606 00006 EXTEND
055052,000120: 01,3607 60025 SU TIME1
055053,000121: 01,3610 10000 CCS A
055054,000122: 01,3611 40000 COM
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Page 1295 |
055056,000124: 01,3612 67734 AD OCT37776
055057,000125: 01,3613 64753 AD ONE
055058,000126: 01,3614 60001 AD L
055059,000127: 01,3615 10000 CCS A
055060,000128: 01,3616 34755 CA ZERO
055061,000129: 01,3617 13621 TCF +2
055062,000130: 01,3620 13621 TCF +1
055063,000131: 01,3621 64753 IMEDIATE AD ONE
055064,000132: 01,3622 00704 TC GOLOC -1
055065,000133: 01,3623 33566 ITSLIKEB CA RTRNCADR # TYPE B, SO STORE RETURN IN
055066,000134: 01,3624 54157 TS TEMPSWCH # TEMPSWCH IN CASE OF AN EVEN PHASE
055067,000135:
055068,000136: 01,3625 33772 CA PRT2CADR # SET UP EXIT TO GET TABLE PART OF THIS
055069,000137: 01,3626 54707 TS GOLOC +2 # VARIABLE TYPE OF PHASE
055070,000138:
055071,000139: 01,3627 30154 CA TEMPPHS # MAKE THE PHASE LOOK RIGHT FOR THE TABLE
055072,000140: 01,3630 76077 MASK OCT177 # PART OF THIS VARIABLE PHASE
055073,000141: 01,3631 54154 TS TEMPPHS
055074,000142:
055075,000143: 01,3632 00006 EXTEND
055076,000144: 01,3633 50155 NDX TEMP2G # OBTAIN THE JOB:S 2CADR
055077,000145: 01,3634 31437 DCA PHSNAME1
055078,000146: 01,3635 52706 DXCH GOLOC
055079,000147:
055080,000148: 01,3636 50155 ITSAJOB NDX TEMP2G # NOW ADD THE PRIORITY AND LET:S GO
055081,000149: 01,3637 31053 CA PHSPRDT1
055082,000150: 01,3640 54704 CHKNOVAC TS GOLOC -1 # SAVE PRIO UNTIL WE SEE IF ITS
055083,000151: 01,3641 00006 EXTEND # A FINDVAC OR A NOVAC
055084,000152: 01,3642 63646 BZMF ITSNOVAC
055085,000153:
055086,000154: 01,3643 33774 CAF FVACCADR # POSITIVE, SET UP FINDVAC CALL.
055087,000155: 01,3644 56704 XCH GOLOC -1 # PICK UP PRIO,
055088,000156: 01,3645 00704 TC GOLOC -1 # AND GO
055089,000157:
055090,000158: 01,3646 33776 ITSNOVAC CAF NOVACADR # NEGATIVE,
055091,000159: 01,3647 56704 XCH GOLOC -1 # SET UP NOVAC CALL,
055092,000160: 01,3650 40000 COM # CORRECT PRIO,
055093,000161: 01,3651 00704 TC GOLOC -1 # AND GO
055094,000162:
055095,000163: 01,3652 54020 ITSATBL TS CYR # FIND OUT IF THE PHASE IS ODD OR EVEN
055096,000164: 01,3653 10020 CCS CYR
055097,000165: 01,3654 13655 TCF +1 # IT:S EVEN
055098,000166: 01,3655 13753 TCF ITSEVEN
055099,000167:
055100,000168: 01,3656 33566 CA RTRNCADR # IN CASE THIS IS THE SECOND PART OF A
055101,000169: 01,3657 54707 TS GOLOC +2 # TYPE B RESTART, WE NEED PROPER EXIT
055102,000170:
055103,000171: 01,3660 30154 CA TEMPPHS # SET UP POINTER FOR FINDING OUR PLACE IN
055104,000172: 01,3661 54021 TS SR # THE RESTART TABLES
055105,000173: 01,3662 60021 AD SR
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Page 1296 |
055107,000175: 01,3663 50155 NDX TEMP2G
055108,000176: 01,3664 62003 AD SIZETAB +1
055109,000177: 01,3665 54156 TS POINTER
055110,000178:
055111,000179: 01,3666 00006 CONTBL2 EXTEND # FIND OUT WHAT:S IN THE TABLE
055112,000180: 01,3667 50156 NDX POINTER
055113,000181: 01,3670 32002 DCA CADRTAB # GET THE 2CADR
055114,000182:
055115,000183: 01,3671 22706 LXCH GOLOC +1 # STORE THE BB INFORMATION
055116,000184:
055117,000185: 01,3672 10000 CCS A # IS IT A JOB OR IS IT TIMED
055118,000186: 01,3673 24000 INCR A # POSITIVE, MUST BE A JOB
055119,000187: 01,3674 13747 TCF ITSAJOB2
055120,000188:
055121,000189: 01,3675 24000 INCR A # MUST BE EITHER A WAITLIST OR LONGCALL
055122,000190: 01,3676 54705 TS GOLOC # LET-S STORE THE CORRECT CADR
055123,000191:
055124,000192: 01,3677 33775 CA WTLTCADR # SET UP OUR EXIT TO WAITLIST
055125,000193: 01,3700 54704 TS GOLOC -1
055126,000194:
055127,000195: 01,3701 30706 CA GOLOC +1 # NOW FIND OUT IF IT IS A WAITLIST CALL
055128,000196: 01,3702 74742 MASK BIT10 # THIS SHOULD BE ONE IF WE HAVE -BB
055129,000197: 01,3703 10000 CCS A # FOR THAT MATTER SO SHOULD BE BITS 9,8,7,
055130,000198: # 6,5, AND LAST BUT NOT LEAST (PERHAPS NOT
055131,000199: # IN IMPORTANCE ANYWAY. BIT 4
055132,000200: 01,3704 13742 TCF ITSWTLST # IT IS A WAITLIST CALL
055133,000201:
055134,000202: 01,3705 50156 NDX POINTER # OBTAIN THE ORIGINAL DELTA T
055135,000203: 01,3706 32000 CA PRDTTAB # ADDRESS FOR THIS LONGCALL
055136,000204:
055137,000205: 01,3707 15445 TCF ITSLGCL1 # NOW GO GET THE DELTA TIME
055138,000206:
055139,000207: # ***** THIS MUST BE IN FIXED FIXED *****
055140,000208:
055141,000209: 5445 BLOCK 02
055142,000210: 4000 SETLOC FFTAG2
055143,000211: 4000 BANK
055144,000212:
055145,000213: 5445 COUNT* $$/RSROU
055146,000214: 5445 22706 ITSLGCL1 LXCH GOLOC +1 # OBTAIN THE CORRECT E BANK
055147,000215: 5446 22006 LXCH BB
055148,000216: 5447 22706 LXCH GOLOC +1 # AND PRESERVE OUR E AND F BANKS
055149,000217:
055150,000218: 5450 00006 EXTEND # GET THE DELTA TIME
055151,000219: 5451 50000 NDX A
055152,000220: 5452 30001 DCA 0
055153,000221:
055154,000222: 5453 22706 LXCH GOLOC +1 # RESTORE OUR E AND F BANK
055155,000223: 5454 22006 LXCH BB # RESTORE THE TASKS E AND F BANKS
055156,000224: 5455 22706 LXCH GOLOC +1 # AND PRESERVE OUR L
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Page 1297 |
055158,000226: 5456 13710 TCF ITSLGCL2 # NOW LET:S PROCESS THIS LONGCALL
055159,000227:
055160,000228: # ***** YOU MAY RETURN TO SWITCHED FIXED *****
055161,000229:
055162,000230: 01,3710 BANK 01
055163,000231: 01,2000 SETLOC RESTART
055164,000232: 01,2000 BANK
055165,000233:
055166,000234: 01,3710 COUNT* $$/RSROU
055167,000235: 01,3710 53153 ITSLGCL2 DXCH LONGTIME
055168,000236:
055169,000237: 01,3711 00006 EXTEND # CALCULATE TIME LEFT
055170,000238: 01,3712 40025 DCS TIME2
055171,000239: 01,3713 21153 DAS LONGTIME
055172,000240: 01,3714 00006 EXTEND
055173,000241: 01,3715 31151 DCA LONGBASE
055174,000242: 01,3716 21153 DAS LONGTIME
055175,000243:
055176,000244: 01,3717 11152 CCS LONGTIME # FIND OUT HOW THIS SHOULD BE RESTARTED
055177,000245: 01,3720 13730 TCF LONGCLCL
055178,000246: 01,3721 13723 TCF +2
055179,000247: 01,3722 13616 TCF IMEDIATE -3
055180,000248: 01,3723 11153 CCS LONGTIME +1
055181,000249: 01,3724 13730 TCF LONGCLCL
055182,000250: 01,3725 13726 NOOP # CAN:T GET HERE *********
055183,000251: 01,3726 13616 TCF IMEDIATE -3
055184,000252: 01,3727 13621 TCF IMEDIATE
055185,000253:
055186,000254: 01,3730 33773 LONGCLCL CA LGCLCADR # WE WILL GO TO LONGCALL
055187,000255: 01,3731 54704 TS GOLOC -1
055188,000256:
055189,000257: 01,3732 00006 EXTEND # PREPARE OUR ENTRY TO LONGCALL
055190,000258: 01,3733 31153 DCA LONGTIME
055191,000259: 01,3734 00704 TC GOLOC -1
055192,000260:
055193,000261: 01,3735 33775 ITSLNGCL CA WTLTCADR # ASSUME IT WILL GO TO WAITLIST
055194,000262: 01,3736 54704 TS GOLOC -1
055195,000263:
055196,000264: 01,3737 50155 NDX TEMP2G
055197,000265: 01,3740 41053 CS PHSPRDT1 # GET THE DELTA T ADDRESS
055198,000266:
055199,000267: 01,3741 15445 TCF ITSLGCL1 # NOW GET THE DELTA TIME
055200,000268:
055201,000269: 01,3742 40706 ITSWTLST CS GOLOC +1 # CORRECT THE BBCON INFORMATION
055202,000270: 01,3743 54706 TS GOLOC +1
055203,000271:
055204,000272: 01,3744 50156 NDX POINTER # GET THE DT AND FIND OUT IF IT WAS STORED
055205,000273: 01,3745 32000 CA PRDTTAB # DIRECTLY OR INDIRECTLY
055206,000274:
055207,000275: 01,3746 13575 TCF TIMETEST # FIND OUT HOW THE TIME IS STORED
055208,000276:
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Page 1298 |
055210,000278: 01,3747 56705 ITSAJOB2 XCH GOLOC # STORE THE CADR
055211,000279:
055212,000280: 01,3750 50156 NDX POINTER # ADD THE PRIORITY AND LET:S GO
055213,000281: 01,3751 32000 CA PRDTTAB
055214,000282:
055215,000283: 01,3752 13640 TCF CHKNOVAC
055216,000284:
055217,000285: 01,3753 30157 ITSEVEN CA TEMPSWCH # SET UP FOR EITHER THE SECOND PART OF THE
055218,000286: 01,3754 54707 TS GOLOC +2 # TABLE, OR A RETURN FOR THE NEXT GROUP
055219,000287:
055220,000288: 01,3755 50155 NDX TEMP2G # SET UP POINTER FOR OUR LOCATION WITHIN
055221,000289: 01,3756 32002 CA SIZETAB # THE TABLE
055222,000290: 01,3757 60154 AD TEMPPHS # THIS MAY LOOK BAD BUT LET:S SEE YOU DO
055223,000291: 01,3760 60154 AD TEMPPHS # BETTER IN TIME OR NUMBERR OF LOCATIONS
055224,000292: 01,3761 60154 AD TEMPPHS
055225,000293: 01,3762 54156 TS POINTER
055226,000294:
055227,000295: 01,3763 13666 TCF CONTBL2 # NOW PROCESS WHAT IS IN THE TABLE
055228,000296:
055229,000297: 01,3764 36250 PHSPART2 CA THREE # SET THE POINTER FOR THE SECOND HALF OF
055230,000298: 01,3765 26156 ADS POINTER # THE TABLE
055231,000299:
055232,000300: 01,3766 33566 CA RTRNCADR # THIS WILL BE OUR LAST TIME THROUGH THE
055233,000301: 01,3767 54707 TS GOLOC +2 # EVEN TABLE, SO AFTER IT GET THE NEXT
055234,000302: # GROUP
055235,000303: 01,3770 13666 TCF CONTBL2 # SO LET:S GET THE SECOND ENTRY IN THE TBL
055236,000304:
055237,000305: 01,3771 0154 TEMPPHS EQUALS MPAC
055238,000306: 01,3771 0155 TEMP2G EQUALS MPAC +1
055239,000307: 01,3771 0156 POINTER EQUALS MPAC +2
055240,000308: 01,3771 0157 TEMPSWCH EQUALS MPAC +3
055241,000309: 01,3771 0705 GOLOC EQUALS VAC5 +20D
055242,000310: 01,3771 7751 MINUS2 EQUALS NEG2
055243,000311: 01,3771 6077 OCT177 EQUALS LOW7
055244,000312:
055245,000313: 01,3771 03764 PHS2CADR GENADR PHSPART2
055246,000314: 01,3772 03542 PRT2CADR GENADR GETPART2
055247,000315: 01,3773 05277 LGCLCADR GENADR LONGCALL
055248,000316: 01,3774 05105 FVACCADR GENADR FINDVAC
055249,000317: 01,3775 05203 WTLTCADR GENADR WAITLIST
055250,000318: 01,3776 05072 NOVACADR GENADR NOVAC
055251,000319:
055252,000320:
End of include-file RESTARTS_ROUTINE.agc. Parent file is MAIN.agc