Source Code
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These source-code files are part of a reconstructed copy of Luminary 173, the
second (unflown) release of the Apollo 14 Lunar Module (LM) Apollo Guidance
Computer (AGC) software.
The reconstruction began with reconstructed source code for Luminary 178. Changes
between revision 173 and 178 were backed out, as described by Luminary memo 167
(revision 1). 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 173 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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055242,000002: ## Copyright: Public domain.
055243,000003: ## Filename: RESTARTS_ROUTINE.agc
055244,000004: ## Purpose: A section of Luminary revision 173.
055245,000005: ## It is part of the reconstructed source code for the second
055246,000006: ## (unflown) release of the flight software for the Lunar
055247,000007: ## Module's (LM) Apollo Guidance Computer (AGC) for Apollo 14.
055248,000008: ## The code has been recreated from a reconstructed copy of
055249,000009: ## Luminary 178, as well as Luminary memo 167 (revision 1).
055250,000010: ## It has been adapted such that the resulting bugger words
055251,000011: ## exactly match those specified for Luminary 173 in NASA
055252,000012: ## drawing 2021152N, which gives relatively high confidence
055253,000013: ## that the reconstruction is correct.
055254,000014: ## Reference: pp. 1292-1297
055255,000015: ## Assembler: yaYUL
055256,000016: ## Contact: Ron Burkey <info@sandroid.org>.
055257,000017: ## Website: www.ibiblio.org/apollo/index.html
055258,000018: ## Mod history: 2019-09-18 MAS Created from Luminary 178.
055259,000019:
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Page 1292
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055261,000021: 01,3530 BANK 01
055262,000022: 01,2000 SETLOC RESTART
055263,000023: 01,2000 BANK
055264,000024:
055265,000025: 01,3530 E3,1436 EBANK= PHSNAME1 # GOPROG MUST SWITCH TO THIS EBANK
055266,000026:
055267,000027: 01,3530 COUNT* $$/RSROU
055268,000028: 01,3530 30161 RESTARTS CA MPAC +5 # GET GROUP NUMBER -1
055269,000029: 01,3531 60000 DOUBLE # SAVE FOR INDEXING
055270,000030: 01,3532 54155 TS TEMP2G
055271,000031:
055272,000032: 01,3533 33772 CA PHS2CADR # SET UP EXIT IN CASE IT IS AN EVEN
055273,000033: 01,3534 54157 TS TEMPSWCH # TABLE PHASE
055274,000034:
055275,000035: 01,3535 33567 CA RTRNCADR # TO SAVE TIME ASSUME IT WILL GET NEXT
055276,000036: 01,3536 54707 TS GOLOC +2 # GROUP AFTER THIS
055277,000037:
055278,000038: 01,3537 30154 CA TEMPPHS
055279,000039: 01,3540 75007 MASK OCT1400
055280,000040: 01,3541 10000 CCS A # IS IT A VARIABLE OR TABLE RESTART
055281,000041: 01,3542 13553 TCF ITSAVAR # IT:S A VARIABLE RESTART
055282,000042:
055283,000043: 01,3543 10154 GETPART2 CCS TEMPPHS # IS IT AN X.1 RESTART
055284,000044: 01,3544 10000 CCS A
055285,000045: 01,3545 13653 TCF ITSATBL # NO, ITS A TABLE RESTART
055286,000046:
055287,000047: 01,3546 35024 CA PRIO14 # IT IS AN X.1 RESTART, THEREFORE START
055288,000048: 01,3547 05105 TC FINDVAC # THE DISPLAY RESTART JOB
055289,000049: 01,3550 E3,1400 EBANK= LST1
055290,000050: 01,3550 03040 20103 2CADR INITDSP
055291,000051:
055292,000052: 01,3552 03567 TC RTRNCADR # FINISHED WITH THIS GROUP, GET NEXT ONE
055293,000053:
055294,000054: 01,3553 75007 ITSAVAR MASK OCT1400 # IS IT TYPE B ?
055295,000055: 01,3554 10000 CCS A
055296,000056: 01,3555 13624 TCF ITSLIKEB # YES,IT IS TYPE B
055297,000057:
055298,000058: 01,3556 00006 EXTEND # STORE THE JOB (OR TASK) 2CADR FOR EXIT
055299,000059: 01,3557 50155 NDX TEMP2G
055300,000060: 01,3560 31437 DCA PHSNAME1
055301,000061: 01,3561 52706 DXCH GOLOC
055302,000062:
055303,000063: 01,3562 30154 CA TEMPPHS # SEE IF THIS IS A JOB, TASK, OR A LONGCAL
055304,000064: 01,3563 74757 MASK OCT7
055305,000065: 01,3564 67751 AD MINUS2
055306,000066: 01,3565 10000 CCS A
055307,000067: 01,3566 13736 TCF ITSLNGCL # ITS A LONGCALL
055308,000068:
055309,000069: 01,3567 04631 RTRNCADR TC SWRETURN # CANT GET HERE
055310,000070:
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Page 1293
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055312,000072: 01,3570 13572 TCF ITSAWAIT
055313,000073:
055314,000074: 01,3571 13637 TCF ITSAJOB # ITS A JOB
055315,000075:
055316,000076: 01,3572 34352 ITSAWAIT CA WTLTCADR # SET UP WAITLIST CALL
055317,000077: 01,3573 54704 TS GOLOC -1
055318,000078:
055319,000079: 01,3574 50155 NDX TEMP2G # DIRECTLY STORED
055320,000080: 01,3575 31053 CA PHSPRDT1
055321,000081: 01,3576 10000 TIMETEST CCS A # IS IT AN IMMEDIATE RESTART
055322,000082: 01,3577 24000 INCR A # NO,
055323,000083: 01,3600 13603 TCF FINDTIME # FIND OUT WHEN IT SHOULD BEGIN
055324,000084:
055325,000085: 01,3601 15447 TCF ITSINDIR # STORED INDIRECTLY
055326,000086:
055327,000087: 01,3602 13622 TCF IMEDIATE # IT WANTS AN IMMEDIATE RESTART
055328,000088:
055329,000089: # ***** THIS MUST BE IN FIXED FIXED *****
055330,000090:
055331,000091: 5447 BLOCK 02
055332,000092: 4000 SETLOC FFTAG2
055333,000093: 4000 BANK
055334,000094:
055335,000095: 5447 COUNT* $$/RSROU
055336,000096: 5447 22706 ITSINDIR LXCH GOLOC +1 # GET THE CORRECT E BANK IN CASE THIS IS
055337,000097: 5450 22006 LXCH BB # SWITCHED ERRASIBLE
055338,000098:
055339,000099: 5451 50000 NDX A # GET THE TIME INDIRECTLY
055340,000100: 5452 30001 CA 1
055341,000101:
055342,000102: 5453 22006 LXCH BB # RESTORE THE BB AND GOLOC
055343,000103: 5454 22706 LXCH GOLOC +1
055344,000104:
055345,000105: 5455 13603 TCF FINDTIME # FIND OUT WHEN IT SHOULD BEGIN
055346,000106:
055347,000107: # ***** YOU MAY RETURN TO SWITCHED FIXED *****
055348,000108:
055349,000109: 01,3603 BANK 01
055350,000110: 01,2000 SETLOC RESTART
055351,000111: 01,2000 BANK
055352,000112:
055353,000113: 01,3603 COUNT* $$/RSROU
055354,000114: 01,3603 40000 FINDTIME COM # MAKE NEGITIVE SINCE IT WILL BE SUBTRACTD
055355,000115: 01,3604 54001 TS L # AND SAVE
055356,000116: 01,3605 50155 NDX TEMP2G
055357,000117: 01,3606 41052 CS TBASE1
055358,000118: 01,3607 00006 EXTEND
055359,000119: 01,3610 60025 SU TIME1
055360,000120: 01,3611 10000 CCS A
055361,000121: 01,3612 40000 COM
055362,000122:
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Page 1294
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055364,000124: 01,3613 67734 AD OCT37776
055365,000125: 01,3614 64753 AD ONE
055366,000126: 01,3615 60001 AD L
055367,000127: 01,3616 10000 CCS A
055368,000128: 01,3617 34755 CA ZERO
055369,000129: 01,3620 13622 TCF +2
055370,000130: 01,3621 13622 TCF +1
055371,000131: 01,3622 64753 IMEDIATE AD ONE
055372,000132: 01,3623 00704 TC GOLOC -1
055373,000133: 01,3624 33567 ITSLIKEB CA RTRNCADR # TYPE B, SO STORE RETURN IN
055374,000134: 01,3625 54157 TS TEMPSWCH # TEMPSWCH IN CASE OF AN EVEN PHASE
055375,000135:
055376,000136: 01,3626 33773 CA PRT2CADR # SET UP EXIT TO GET TABLE PART OF THIS
055377,000137: 01,3627 54707 TS GOLOC +2 # VARIABLE TYPE OF PHASE
055378,000138:
055379,000139: 01,3630 30154 CA TEMPPHS # MAKE THE PHASE LOOK RIGHT FOR THE TABLE
055380,000140: 01,3631 76077 MASK OCT177 # PART OF THIS VARIABLE PHASE
055381,000141: 01,3632 54154 TS TEMPPHS
055382,000142:
055383,000143: 01,3633 00006 EXTEND
055384,000144: 01,3634 50155 NDX TEMP2G # OBTAIN THE JOB:S 2CADR
055385,000145: 01,3635 31437 DCA PHSNAME1
055386,000146: 01,3636 52706 DXCH GOLOC
055387,000147:
055388,000148: 01,3637 50155 ITSAJOB NDX TEMP2G # NOW ADD THE PRIORITY AND LET:S GO
055389,000149: 01,3640 31053 CA PHSPRDT1
055390,000150: 01,3641 54704 CHKNOVAC TS GOLOC -1 # SAVE PRIO UNTIL WE SEE IF ITS
055391,000151: 01,3642 00006 EXTEND # A FINDVAC OR A NOVAC
055392,000152: 01,3643 63647 BZMF ITSNOVAC
055393,000153:
055394,000154: 01,3644 34354 CAF FVACCADR # POSITIVE, SET UP FINDVAC CALL.
055395,000155: 01,3645 56704 XCH GOLOC -1 # PICK UP PRIO,
055396,000156: 01,3646 00704 TC GOLOC -1 # AND GO
055397,000157:
055398,000158: 01,3647 34351 ITSNOVAC CAF NOVACADR # NEGATIVE,
055399,000159: 01,3650 56704 XCH GOLOC -1 # SET UP NOVAC CALL,
055400,000160: 01,3651 40000 COM # CORRECT PRIO,
055401,000161: 01,3652 00704 TC GOLOC -1 # AND GO
055402,000162:
055403,000163: 01,3653 54020 ITSATBL TS CYR # FIND OUT IF THE PHASE IS ODD OR EVEN
055404,000164: 01,3654 10020 CCS CYR
055405,000165: 01,3655 13656 TCF +1 # IT:S EVEN
055406,000166: 01,3656 13754 TCF ITSEVEN
055407,000167:
055408,000168: 01,3657 33567 CA RTRNCADR # IN CASE THIS IS THE SECOND PART OF A
055409,000169: 01,3660 54707 TS GOLOC +2 # TYPE B RESTART, WE NEED PROPER EXIT
055410,000170:
055411,000171: 01,3661 30154 CA TEMPPHS # SET UP POINTER FOR FINDING OUR PLACE IN
055412,000172: 01,3662 54021 TS SR # THE RESTART TABLES
055413,000173: 01,3663 60021 AD SR
055414,000174:
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Page 1295
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055416,000176: 01,3664 50155 NDX TEMP2G
055417,000177: 01,3665 62003 AD SIZETAB +1
055418,000178: 01,3666 54156 TS POINTER
055419,000179:
055420,000180: 01,3667 00006 CONTBL2 EXTEND # FIND OUT WHAT:S IN THE TABLE
055421,000181: 01,3670 50156 NDX POINTER
055422,000182: 01,3671 32002 DCA CADRTAB # GET THE 2CADR
055423,000183:
055424,000184: 01,3672 22706 LXCH GOLOC +1 # STORE THE BB INFORMATION
055425,000185:
055426,000186: 01,3673 10000 CCS A # IS IT A JOB OR IS IT TIMED
055427,000187: 01,3674 24000 INCR A # POSITIVE, MUST BE A JOB
055428,000188: 01,3675 13750 TCF ITSAJOB2
055429,000189:
055430,000190: 01,3676 24000 INCR A # MUST BE EITHER A WAITLIST OR LONGCALL
055431,000191: 01,3677 54705 TS GOLOC # LET-S STORE THE CORRECT CADR
055432,000192:
055433,000193: 01,3700 34352 CA WTLTCADR # SET UP OUR EXIT TO WAITLIST
055434,000194: 01,3701 54704 TS GOLOC -1
055435,000195:
055436,000196: 01,3702 30706 CA GOLOC +1 # NOW FIND OUT IF IT IS A WAITLIST CALL
055437,000197: 01,3703 74742 MASK BIT10 # THIS SHOULD BE ONE IF WE HAVE -BB
055438,000198: 01,3704 10000 CCS A # FOR THAT MATTER SO SHOULD BE BITS 9,8,7,
055439,000199: # 6,5, AND LAST BUT NOT LEAST (PERHAPS NOT
055440,000200: # IN IMPORTANCE ANYWAY. BIT 4
055441,000201: 01,3705 13743 TCF ITSWTLST # IT IS A WAITLIST CALL
055442,000202:
055443,000203: 01,3706 50156 NDX POINTER # OBTAIN THE ORIGINAL DELTA T
055444,000204: 01,3707 32000 CA PRDTTAB # ADDRESS FOR THIS LONGCALL
055445,000205:
055446,000206: 01,3710 15456 TCF ITSLGCL1 # NOW GO GET THE DELTA TIME
055447,000207:
055448,000208: # ***** THIS MUST BE IN FIXED FIXED *****
055449,000209:
055450,000210: 5456 BLOCK 02
055451,000211: 4000 SETLOC FFTAG2
055452,000212: 4000 BANK
055453,000213:
055454,000214: 5456 COUNT* $$/RSROU
055455,000215: 5456 22706 ITSLGCL1 LXCH GOLOC +1 # OBTAIN THE CORRECT E BANK
055456,000216: 5457 22006 LXCH BB
055457,000217: 5460 22706 LXCH GOLOC +1 # AND PRESERVE OUR E AND F BANKS
055458,000218:
055459,000219: 5461 00006 EXTEND # GET THE DELTA TIME
055460,000220: 5462 50000 NDX A
055461,000221: 5463 30001 DCA 0
055462,000222:
055463,000223: 5464 22706 LXCH GOLOC +1 # RESTORE OUR E AND F BANK
055464,000224: 5465 22006 LXCH BB # RESTORE THE TASKS E AND F BANKS
055465,000225: 5466 22706 LXCH GOLOC +1 # AND PRESERVE OUR L
055466,000226:
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Page 1296
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055468,000228: 5467 13711 TCF ITSLGCL2 # NOW LET:S PROCESS THIS LONGCALL
055469,000229:
055470,000230: # ***** YOU MAY RETURN TO SWITCHED FIXED *****
055471,000231:
055472,000232: 01,3711 BANK 01
055473,000233: 01,2000 SETLOC RESTART
055474,000234: 01,2000 BANK
055475,000235:
055476,000236: 01,3711 COUNT* $$/RSROU
055477,000237: 01,3711 53153 ITSLGCL2 DXCH LONGTIME
055478,000238:
055479,000239: 01,3712 00006 EXTEND # CALCULATE TIME LEFT
055480,000240: 01,3713 40025 DCS TIME2
055481,000241: 01,3714 21153 DAS LONGTIME
055482,000242: 01,3715 00006 EXTEND
055483,000243: 01,3716 31151 DCA LONGBASE
055484,000244: 01,3717 21153 DAS LONGTIME
055485,000245:
055486,000246: 01,3720 11152 CCS LONGTIME # FIND OUT HOW THIS SHOULD BE RESTARTED
055487,000247: 01,3721 13731 TCF LONGCLCL
055488,000248: 01,3722 13724 TCF +2
055489,000249: 01,3723 13617 TCF IMEDIATE -3
055490,000250: 01,3724 11153 CCS LONGTIME +1
055491,000251: 01,3725 13731 TCF LONGCLCL
055492,000252: 01,3726 13727 NOOP # CAN:T GET HERE *********
055493,000253: 01,3727 13617 TCF IMEDIATE -3
055494,000254: 01,3730 13622 TCF IMEDIATE
055495,000255:
055496,000256: 01,3731 33774 LONGCLCL CA LGCLCADR # WE WILL GO TO LONGCALL
055497,000257: 01,3732 54704 TS GOLOC -1
055498,000258:
055499,000259: 01,3733 00006 EXTEND # PREPARE OUR ENTRY TO LONGCALL
055500,000260: 01,3734 31153 DCA LONGTIME
055501,000261: 01,3735 00704 TC GOLOC -1
055502,000262:
055503,000263: 01,3736 34352 ITSLNGCL CA WTLTCADR # ASSUME IT WILL GO TO WAITLIST
055504,000264: 01,3737 54704 TS GOLOC -1
055505,000265:
055506,000266: 01,3740 50155 NDX TEMP2G
055507,000267: 01,3741 41053 CS PHSPRDT1 # GET THE DELTA T ADDRESS
055508,000268:
055509,000269: 01,3742 15456 TCF ITSLGCL1 # NOW GET THE DELTA TIME
055510,000270:
055511,000271: 01,3743 40706 ITSWTLST CS GOLOC +1 # CORRECT THE BBCON INFORMATION
055512,000272: 01,3744 54706 TS GOLOC +1
055513,000273:
055514,000274: 01,3745 50156 NDX POINTER # GET THE DT AND FIND OUT IF IT WAS STORED
055515,000275: 01,3746 32000 CA PRDTTAB # DIRECTLY OR INDIRECTLY
055516,000276:
055517,000277: 01,3747 13576 TCF TIMETEST # FIND OUT HOW THE TIME IS STORED
055518,000278:
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Page 1297
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055520,000280: 01,3750 56705 ITSAJOB2 XCH GOLOC # STORE THE CADR
055521,000281:
055522,000282: 01,3751 50156 NDX POINTER # ADD THE PRIORITY AND LET:S GO
055523,000283: 01,3752 32000 CA PRDTTAB
055524,000284:
055525,000285: 01,3753 13641 TCF CHKNOVAC
055526,000286:
055527,000287: 01,3754 30157 ITSEVEN CA TEMPSWCH # SET UP FOR EITHER THE SECOND PART OF THE
055528,000288: 01,3755 54707 TS GOLOC +2 # TABLE, OR A RETURN FOR THE NEXT GROUP
055529,000289:
055530,000290: 01,3756 50155 NDX TEMP2G # SET UP POINTER FOR OUR LOCATION WITHIN
055531,000291: 01,3757 32002 CA SIZETAB # THE TABLE
055532,000292: 01,3760 60154 AD TEMPPHS # THIS MAY LOOK BAD BUT LET:S SEE YOU DO
055533,000293: 01,3761 60154 AD TEMPPHS # BETTER IN TIME OR NUMBERR OF LOCATIONS
055534,000294: 01,3762 60154 AD TEMPPHS
055535,000295: 01,3763 54156 TS POINTER
055536,000296:
055537,000297: 01,3764 13667 TCF CONTBL2 # NOW PROCESS WHAT IS IN THE TABLE
055538,000298:
055539,000299: 01,3765 36250 PHSPART2 CA THREE # SET THE POINTER FOR THE SECOND HALF OF
055540,000300: 01,3766 26156 ADS POINTER # THE TABLE
055541,000301:
055542,000302: 01,3767 33567 CA RTRNCADR # THIS WILL BE OUR LAST TIME THROUGH THE
055543,000303: 01,3770 54707 TS GOLOC +2 # EVEN TABLE , SO AFTER IT GET THE NEXT
055544,000304: # GROUP
055545,000305: 01,3771 13667 TCF CONTBL2 # SO LET:S GET THE SECOND ENTRY IN THE TBL
055546,000306:
055547,000307: 01,3772 0154 TEMPPHS EQUALS MPAC
055548,000308: 01,3772 0155 TEMP2G EQUALS MPAC +1
055549,000309: 01,3772 0156 POINTER EQUALS MPAC +2
055550,000310: 01,3772 0157 TEMPSWCH EQUALS MPAC +3
055551,000311: 01,3772 0705 GOLOC EQUALS VAC5 +20D
055552,000312: 01,3772 7751 MINUS2 EQUALS NEG2
055553,000313: 01,3772 6077 OCT177 EQUALS LOW7
055554,000314:
055555,000315: 01,3772 03765 PHS2CADR GENADR PHSPART2
055556,000316: 01,3773 03543 PRT2CADR GENADR GETPART2
055557,000317: 01,3774 05310 LGCLCADR GENADR LONGCALL
055558,000318: 01,3775 4354 FVACCADR = TCFINDVC
055559,000319: 01,3775 4352 WTLTCADR = TCWAIT
055560,000320: 01,3775 4351 NOVACADR = TCNOVAC
055561,000321:
055562,000322:
End of include-file RESTARTS_ROUTINE.agc. Parent file is MAIN.agc