Source Code
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These source-code files are part of a reconstructed copy of Luminary 163, the
first (unflown) release of the Apollo 14 Lunar Module (LM) Apollo Guidance
Computer (AGC) software.
The reconstruction began with reconstructed source code for Luminary 173. Changes
between revision 163 and 173 were backed out, as described by Luminary memos 157
and 158. The reconstruction was verified by matching memory-bank checksums
to those listed in drawing 2021152N. Note that page numbers in the reconstructed
code match those for the baseline log section mentioned in each file's changelog;
the page numbers for a real Luminary 163 listing would be different.
Comments from the original source code are prefixed with a single '#' symbol,
whereas comments added later are prefixed by "##" or "###". Report any errors
noted by creating an
issue report at the Virtual AGC
project's GitHub repository.
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055174,000002: ## Copyright: Public domain.
055175,000003: ## Filename: RESTARTS_ROUTINE.agc
055176,000004: ## Purpose: A section of Luminary revision 163.
055177,000005: ## It is part of the reconstructed source code for the first
055178,000006: ## (unflown) release of the flight software for the Lunar
055179,000007: ## Module's (LM) Apollo Guidance Computer (AGC) for Apollo 14.
055180,000008: ## The code has been recreated from a reconstructed copy of
055181,000009: ## Luminary 173, as well as Luminary memos 157 amd 158.
055182,000010: ## It has been adapted such that the resulting bugger words
055183,000011: ## exactly match those specified for Luminary 163 in NASA
055184,000012: ## drawing 2021152N, which gives relatively high confidence
055185,000013: ## that the reconstruction is correct.
055186,000014: ## Reference: pp. 1292-1297
055187,000015: ## Assembler: yaYUL
055188,000016: ## Contact: Ron Burkey <info@sandroid.org>.
055189,000017: ## Website: www.ibiblio.org/apollo/index.html
055190,000018: ## Mod history: 2019-08-21 MAS Created from Luminary 173.
055191,000019:
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Page 1292
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055193,000021: 01,3530 BANK 01
055194,000022: 01,2000 SETLOC RESTART
055195,000023: 01,2000 BANK
055196,000024:
055197,000025: 01,3530 E3,1436 EBANK= PHSNAME1 # GOPROG MUST SWITCH TO THIS EBANK
055198,000026:
055199,000027: 01,3530 COUNT* $$/RSROU
055200,000028: 01,3530 30161 RESTARTS CA MPAC +5 # GET GROUP NUMBER -1
055201,000029: 01,3531 60000 DOUBLE # SAVE FOR INDEXING
055202,000030: 01,3532 54155 TS TEMP2G
055203,000031:
055204,000032: 01,3533 33772 CA PHS2CADR # SET UP EXIT IN CASE IT IS AN EVEN
055205,000033: 01,3534 54157 TS TEMPSWCH # TABLE PHASE
055206,000034:
055207,000035: 01,3535 33567 CA RTRNCADR # TO SAVE TIME ASSUME IT WILL GET NEXT
055208,000036: 01,3536 54707 TS GOLOC +2 # GROUP AFTER THIS
055209,000037:
055210,000038: 01,3537 30154 CA TEMPPHS
055211,000039: 01,3540 75007 MASK OCT1400
055212,000040: 01,3541 10000 CCS A # IS IT A VARIABLE OR TABLE RESTART
055213,000041: 01,3542 13553 TCF ITSAVAR # IT:S A VARIABLE RESTART
055214,000042:
055215,000043: 01,3543 10154 GETPART2 CCS TEMPPHS # IS IT AN X.1 RESTART
055216,000044: 01,3544 10000 CCS A
055217,000045: 01,3545 13653 TCF ITSATBL # NO, ITS A TABLE RESTART
055218,000046:
055219,000047: 01,3546 35024 CA PRIO14 # IT IS AN X.1 RESTART, THEREFORE START
055220,000048: 01,3547 05105 TC FINDVAC # THE DISPLAY RESTART JOB
055221,000049: 01,3550 E3,1400 EBANK= LST1
055222,000050: 01,3550 03040 20103 2CADR INITDSP
055223,000051:
055224,000052: 01,3552 03567 TC RTRNCADR # FINISHED WITH THIS GROUP, GET NEXT ONE
055225,000053:
055226,000054: 01,3553 75007 ITSAVAR MASK OCT1400 # IS IT TYPE B ?
055227,000055: 01,3554 10000 CCS A
055228,000056: 01,3555 13624 TCF ITSLIKEB # YES,IT IS TYPE B
055229,000057:
055230,000058: 01,3556 00006 EXTEND # STORE THE JOB (OR TASK) 2CADR FOR EXIT
055231,000059: 01,3557 50155 NDX TEMP2G
055232,000060: 01,3560 31437 DCA PHSNAME1
055233,000061: 01,3561 52706 DXCH GOLOC
055234,000062:
055235,000063: 01,3562 30154 CA TEMPPHS # SEE IF THIS IS A JOB, TASK, OR A LONGCAL
055236,000064: 01,3563 74757 MASK OCT7
055237,000065: 01,3564 67751 AD MINUS2
055238,000066: 01,3565 10000 CCS A
055239,000067: 01,3566 13736 TCF ITSLNGCL # ITS A LONGCALL
055240,000068:
055241,000069: 01,3567 04631 RTRNCADR TC SWRETURN # CANT GET HERE
055242,000070:
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Page 1293
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055244,000072: 01,3570 13572 TCF ITSAWAIT
055245,000073:
055246,000074: 01,3571 13637 TCF ITSAJOB # ITS A JOB
055247,000075:
055248,000076: 01,3572 34352 ITSAWAIT CA WTLTCADR # SET UP WAITLIST CALL
055249,000077: 01,3573 54704 TS GOLOC -1
055250,000078:
055251,000079: 01,3574 50155 NDX TEMP2G # DIRECTLY STORED
055252,000080: 01,3575 31053 CA PHSPRDT1
055253,000081: 01,3576 10000 TIMETEST CCS A # IS IT AN IMMEDIATE RESTART
055254,000082: 01,3577 24000 INCR A # NO,
055255,000083: 01,3600 13603 TCF FINDTIME # FIND OUT WHEN IT SHOULD BEGIN
055256,000084:
055257,000085: 01,3601 15447 TCF ITSINDIR # STORED INDIRECTLY
055258,000086:
055259,000087: 01,3602 13622 TCF IMEDIATE # IT WANTS AN IMMEDIATE RESTART
055260,000088:
055261,000089: # ***** THIS MUST BE IN FIXED FIXED *****
055262,000090:
055263,000091: 5447 BLOCK 02
055264,000092: 4000 SETLOC FFTAG2
055265,000093: 4000 BANK
055266,000094:
055267,000095: 5447 COUNT* $$/RSROU
055268,000096: 5447 22706 ITSINDIR LXCH GOLOC +1 # GET THE CORRECT E BANK IN CASE THIS IS
055269,000097: 5450 22006 LXCH BB # SWITCHED ERRASIBLE
055270,000098:
055271,000099: 5451 50000 NDX A # GET THE TIME INDIRECTLY
055272,000100: 5452 30001 CA 1
055273,000101:
055274,000102: 5453 22006 LXCH BB # RESTORE THE BB AND GOLOC
055275,000103: 5454 22706 LXCH GOLOC +1
055276,000104:
055277,000105: 5455 13603 TCF FINDTIME # FIND OUT WHEN IT SHOULD BEGIN
055278,000106:
055279,000107: # ***** YOU MAY RETURN TO SWITCHED FIXED *****
055280,000108:
055281,000109: 01,3603 BANK 01
055282,000110: 01,2000 SETLOC RESTART
055283,000111: 01,2000 BANK
055284,000112:
055285,000113: 01,3603 COUNT* $$/RSROU
055286,000114: 01,3603 40000 FINDTIME COM # MAKE NEGITIVE SINCE IT WILL BE SUBTRACTD
055287,000115: 01,3604 54001 TS L # AND SAVE
055288,000116: 01,3605 50155 NDX TEMP2G
055289,000117: 01,3606 41052 CS TBASE1
055290,000118: 01,3607 00006 EXTEND
055291,000119: 01,3610 60025 SU TIME1
055292,000120: 01,3611 10000 CCS A
055293,000121: 01,3612 40000 COM
055294,000122:
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Page 1294
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055296,000124: 01,3613 67734 AD OCT37776
055297,000125: 01,3614 64753 AD ONE
055298,000126: 01,3615 60001 AD L
055299,000127: 01,3616 10000 CCS A
055300,000128: 01,3617 34755 CA ZERO
055301,000129: 01,3620 13622 TCF +2
055302,000130: 01,3621 13622 TCF +1
055303,000131: 01,3622 64753 IMEDIATE AD ONE
055304,000132: 01,3623 00704 TC GOLOC -1
055305,000133: 01,3624 33567 ITSLIKEB CA RTRNCADR # TYPE B, SO STORE RETURN IN
055306,000134: 01,3625 54157 TS TEMPSWCH # TEMPSWCH IN CASE OF AN EVEN PHASE
055307,000135:
055308,000136: 01,3626 33773 CA PRT2CADR # SET UP EXIT TO GET TABLE PART OF THIS
055309,000137: 01,3627 54707 TS GOLOC +2 # VARIABLE TYPE OF PHASE
055310,000138:
055311,000139: 01,3630 30154 CA TEMPPHS # MAKE THE PHASE LOOK RIGHT FOR THE TABLE
055312,000140: 01,3631 76077 MASK OCT177 # PART OF THIS VARIABLE PHASE
055313,000141: 01,3632 54154 TS TEMPPHS
055314,000142:
055315,000143: 01,3633 00006 EXTEND
055316,000144: 01,3634 50155 NDX TEMP2G # OBTAIN THE JOB:S 2CADR
055317,000145: 01,3635 31437 DCA PHSNAME1
055318,000146: 01,3636 52706 DXCH GOLOC
055319,000147:
055320,000148: 01,3637 50155 ITSAJOB NDX TEMP2G # NOW ADD THE PRIORITY AND LET:S GO
055321,000149: 01,3640 31053 CA PHSPRDT1
055322,000150: 01,3641 54704 CHKNOVAC TS GOLOC -1 # SAVE PRIO UNTIL WE SEE IF ITS
055323,000151: 01,3642 00006 EXTEND # A FINDVAC OR A NOVAC
055324,000152: 01,3643 63647 BZMF ITSNOVAC
055325,000153:
055326,000154: 01,3644 34354 CAF FVACCADR # POSITIVE, SET UP FINDVAC CALL.
055327,000155: 01,3645 56704 XCH GOLOC -1 # PICK UP PRIO,
055328,000156: 01,3646 00704 TC GOLOC -1 # AND GO
055329,000157:
055330,000158: 01,3647 34351 ITSNOVAC CAF NOVACADR # NEGATIVE,
055331,000159: 01,3650 56704 XCH GOLOC -1 # SET UP NOVAC CALL,
055332,000160: 01,3651 40000 COM # CORRECT PRIO,
055333,000161: 01,3652 00704 TC GOLOC -1 # AND GO
055334,000162:
055335,000163: 01,3653 54020 ITSATBL TS CYR # FIND OUT IF THE PHASE IS ODD OR EVEN
055336,000164: 01,3654 10020 CCS CYR
055337,000165: 01,3655 13656 TCF +1 # IT:S EVEN
055338,000166: 01,3656 13754 TCF ITSEVEN
055339,000167:
055340,000168: 01,3657 33567 CA RTRNCADR # IN CASE THIS IS THE SECOND PART OF A
055341,000169: 01,3660 54707 TS GOLOC +2 # TYPE B RESTART, WE NEED PROPER EXIT
055342,000170:
055343,000171: 01,3661 30154 CA TEMPPHS # SET UP POINTER FOR FINDING OUR PLACE IN
055344,000172: 01,3662 54021 TS SR # THE RESTART TABLES
055345,000173: 01,3663 60021 AD SR
055346,000174:
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Page 1295
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055348,000176: 01,3664 50155 NDX TEMP2G
055349,000177: 01,3665 62003 AD SIZETAB +1
055350,000178: 01,3666 54156 TS POINTER
055351,000179:
055352,000180: 01,3667 00006 CONTBL2 EXTEND # FIND OUT WHAT:S IN THE TABLE
055353,000181: 01,3670 50156 NDX POINTER
055354,000182: 01,3671 32002 DCA CADRTAB # GET THE 2CADR
055355,000183:
055356,000184: 01,3672 22706 LXCH GOLOC +1 # STORE THE BB INFORMATION
055357,000185:
055358,000186: 01,3673 10000 CCS A # IS IT A JOB OR IS IT TIMED
055359,000187: 01,3674 24000 INCR A # POSITIVE, MUST BE A JOB
055360,000188: 01,3675 13750 TCF ITSAJOB2
055361,000189:
055362,000190: 01,3676 24000 INCR A # MUST BE EITHER A WAITLIST OR LONGCALL
055363,000191: 01,3677 54705 TS GOLOC # LET-S STORE THE CORRECT CADR
055364,000192:
055365,000193: 01,3700 34352 CA WTLTCADR # SET UP OUR EXIT TO WAITLIST
055366,000194: 01,3701 54704 TS GOLOC -1
055367,000195:
055368,000196: 01,3702 30706 CA GOLOC +1 # NOW FIND OUT IF IT IS A WAITLIST CALL
055369,000197: 01,3703 74742 MASK BIT10 # THIS SHOULD BE ONE IF WE HAVE -BB
055370,000198: 01,3704 10000 CCS A # FOR THAT MATTER SO SHOULD BE BITS 9,8,7,
055371,000199: # 6,5, AND LAST BUT NOT LEAST (PERHAPS NOT
055372,000200: # IN IMPORTANCE ANYWAY. BIT 4
055373,000201: 01,3705 13743 TCF ITSWTLST # IT IS A WAITLIST CALL
055374,000202:
055375,000203: 01,3706 50156 NDX POINTER # OBTAIN THE ORIGINAL DELTA T
055376,000204: 01,3707 32000 CA PRDTTAB # ADDRESS FOR THIS LONGCALL
055377,000205:
055378,000206: 01,3710 15456 TCF ITSLGCL1 # NOW GO GET THE DELTA TIME
055379,000207:
055380,000208: # ***** THIS MUST BE IN FIXED FIXED *****
055381,000209:
055382,000210: 5456 BLOCK 02
055383,000211: 4000 SETLOC FFTAG2
055384,000212: 4000 BANK
055385,000213:
055386,000214: 5456 COUNT* $$/RSROU
055387,000215: 5456 22706 ITSLGCL1 LXCH GOLOC +1 # OBTAIN THE CORRECT E BANK
055388,000216: 5457 22006 LXCH BB
055389,000217: 5460 22706 LXCH GOLOC +1 # AND PRESERVE OUR E AND F BANKS
055390,000218:
055391,000219: 5461 00006 EXTEND # GET THE DELTA TIME
055392,000220: 5462 50000 NDX A
055393,000221: 5463 30001 DCA 0
055394,000222:
055395,000223: 5464 22706 LXCH GOLOC +1 # RESTORE OUR E AND F BANK
055396,000224: 5465 22006 LXCH BB # RESTORE THE TASKS E AND F BANKS
055397,000225: 5466 22706 LXCH GOLOC +1 # AND PRESERVE OUR L
055398,000226:
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Page 1296
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055400,000228: 5467 13711 TCF ITSLGCL2 # NOW LET:S PROCESS THIS LONGCALL
055401,000229:
055402,000230: # ***** YOU MAY RETURN TO SWITCHED FIXED *****
055403,000231:
055404,000232: 01,3711 BANK 01
055405,000233: 01,2000 SETLOC RESTART
055406,000234: 01,2000 BANK
055407,000235:
055408,000236: 01,3711 COUNT* $$/RSROU
055409,000237: 01,3711 53153 ITSLGCL2 DXCH LONGTIME
055410,000238:
055411,000239: 01,3712 00006 EXTEND # CALCULATE TIME LEFT
055412,000240: 01,3713 40025 DCS TIME2
055413,000241: 01,3714 21153 DAS LONGTIME
055414,000242: 01,3715 00006 EXTEND
055415,000243: 01,3716 31151 DCA LONGBASE
055416,000244: 01,3717 21153 DAS LONGTIME
055417,000245:
055418,000246: 01,3720 11152 CCS LONGTIME # FIND OUT HOW THIS SHOULD BE RESTARTED
055419,000247: 01,3721 13731 TCF LONGCLCL
055420,000248: 01,3722 13724 TCF +2
055421,000249: 01,3723 13617 TCF IMEDIATE -3
055422,000250: 01,3724 11153 CCS LONGTIME +1
055423,000251: 01,3725 13731 TCF LONGCLCL
055424,000252: 01,3726 13727 NOOP # CAN:T GET HERE *********
055425,000253: 01,3727 13617 TCF IMEDIATE -3
055426,000254: 01,3730 13622 TCF IMEDIATE
055427,000255:
055428,000256: 01,3731 33774 LONGCLCL CA LGCLCADR # WE WILL GO TO LONGCALL
055429,000257: 01,3732 54704 TS GOLOC -1
055430,000258:
055431,000259: 01,3733 00006 EXTEND # PREPARE OUR ENTRY TO LONGCALL
055432,000260: 01,3734 31153 DCA LONGTIME
055433,000261: 01,3735 00704 TC GOLOC -1
055434,000262:
055435,000263: 01,3736 34352 ITSLNGCL CA WTLTCADR # ASSUME IT WILL GO TO WAITLIST
055436,000264: 01,3737 54704 TS GOLOC -1
055437,000265:
055438,000266: 01,3740 50155 NDX TEMP2G
055439,000267: 01,3741 41053 CS PHSPRDT1 # GET THE DELTA T ADDRESS
055440,000268:
055441,000269: 01,3742 15456 TCF ITSLGCL1 # NOW GET THE DELTA TIME
055442,000270:
055443,000271: 01,3743 40706 ITSWTLST CS GOLOC +1 # CORRECT THE BBCON INFORMATION
055444,000272: 01,3744 54706 TS GOLOC +1
055445,000273:
055446,000274: 01,3745 50156 NDX POINTER # GET THE DT AND FIND OUT IF IT WAS STORED
055447,000275: 01,3746 32000 CA PRDTTAB # DIRECTLY OR INDIRECTLY
055448,000276:
055449,000277: 01,3747 13576 TCF TIMETEST # FIND OUT HOW THE TIME IS STORED
055450,000278:
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Page 1297
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055452,000280: 01,3750 56705 ITSAJOB2 XCH GOLOC # STORE THE CADR
055453,000281:
055454,000282: 01,3751 50156 NDX POINTER # ADD THE PRIORITY AND LET:S GO
055455,000283: 01,3752 32000 CA PRDTTAB
055456,000284:
055457,000285: 01,3753 13641 TCF CHKNOVAC
055458,000286:
055459,000287: 01,3754 30157 ITSEVEN CA TEMPSWCH # SET UP FOR EITHER THE SECOND PART OF THE
055460,000288: 01,3755 54707 TS GOLOC +2 # TABLE, OR A RETURN FOR THE NEXT GROUP
055461,000289:
055462,000290: 01,3756 50155 NDX TEMP2G # SET UP POINTER FOR OUR LOCATION WITHIN
055463,000291: 01,3757 32002 CA SIZETAB # THE TABLE
055464,000292: 01,3760 60154 AD TEMPPHS # THIS MAY LOOK BAD BUT LET:S SEE YOU DO
055465,000293: 01,3761 60154 AD TEMPPHS # BETTER IN TIME OR NUMBERR OF LOCATIONS
055466,000294: 01,3762 60154 AD TEMPPHS
055467,000295: 01,3763 54156 TS POINTER
055468,000296:
055469,000297: 01,3764 13667 TCF CONTBL2 # NOW PROCESS WHAT IS IN THE TABLE
055470,000298:
055471,000299: 01,3765 36250 PHSPART2 CA THREE # SET THE POINTER FOR THE SECOND HALF OF
055472,000300: 01,3766 26156 ADS POINTER # THE TABLE
055473,000301:
055474,000302: 01,3767 33567 CA RTRNCADR # THIS WILL BE OUR LAST TIME THROUGH THE
055475,000303: 01,3770 54707 TS GOLOC +2 # EVEN TABLE , SO AFTER IT GET THE NEXT
055476,000304: # GROUP
055477,000305: 01,3771 13667 TCF CONTBL2 # SO LET:S GET THE SECOND ENTRY IN THE TBL
055478,000306:
055479,000307: 01,3772 0154 TEMPPHS EQUALS MPAC
055480,000308: 01,3772 0155 TEMP2G EQUALS MPAC +1
055481,000309: 01,3772 0156 POINTER EQUALS MPAC +2
055482,000310: 01,3772 0157 TEMPSWCH EQUALS MPAC +3
055483,000311: 01,3772 0705 GOLOC EQUALS VAC5 +20D
055484,000312: 01,3772 7751 MINUS2 EQUALS NEG2
055485,000313: 01,3772 6077 OCT177 EQUALS LOW7
055486,000314:
055487,000315: 01,3772 03765 PHS2CADR GENADR PHSPART2
055488,000316: 01,3773 03543 PRT2CADR GENADR GETPART2
055489,000317: 01,3774 05310 LGCLCADR GENADR LONGCALL
055490,000318: 01,3775 4354 FVACCADR = TCFINDVC
055491,000319: 01,3775 4352 WTLTCADR = TCWAIT
055492,000320: 01,3775 4351 NOVACADR = TCNOVAC
055493,000321:
055494,000322:
End of include-file RESTARTS_ROUTINE.agc. Parent file is MAIN.agc