GAP: ASSEMBLE REVISION 237 OF AGC PROGRAM COLOSSUS BY NASA 2021111-031 1:17 AUG. 24, 1968Note 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 were derived from scans of the
Colossus 237 (Apollo 8 Command Module) program listing from the private collection of original
AGC developer Fred Martin. Scanning was by Ron Burkey. Pre-existing Colossus 249
(Apollo 9 CM) source files were used as a template, and changes between Colossus 249
and Colossus 237 were manually transcribed by a team of volunteers. Note
that the page images
presented online are of reduced quality, and that additional images
are available. Report any conversion errors or legibility
problems in page images to info@sandroid.org.
Notations on the program listing read, in part:GAP: ASSEMBLE REVISION 237 OF AGC PROGRAM COLOSSUS BY NASA 2021111-031 1:17 AUG. 24, 1968Note that the date is the date of the printout, not the date of the program revision. |
058577,000002: ## Copyright: Public domain.
058578,000003: ## Filename: RESTARTS_ROUTINE.agc
058579,000004: ## Purpose: Part of the source code for Colossus build 237.
058580,000005: ## This is for the Command Module's (CM) Apollo Guidance
058581,000006: ## Computer (AGC), for Apollo 8.
058582,000007: ## Assembler: yaYUL
058583,000008: ## Contact: Jim Lawton <jim DOT lawton AT gmail DOT com>
058584,000009: ## Website: www.ibiblio.org/apollo/index.html
058585,000010: ## Page Scans: www.ibiblio.org/apollo/ScansForConversion/Colossus237/
058586,000011: ## Mod history: 2011-04-17 JL Adapted from corresponding Colossus 249 file.
058587,000012: ## 2017-01-01 RSB Proofed comment text using octopus/ProoferComments,
058588,000013: ## and fixed errors found.
058589,000014: ## 2017-03-14 RSB Comment-text fixes noted in proofing Luminary 116.
058590,000015:
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Page 1378 |
058592,000017: 01,3520 BANK 01
058593,000018: 01,2000 SETLOC RESTART
058594,000019: 01,2000 BANK
058595,000020:
058596,000021: 01,3520 E3,1436 EBANK= PHSNAME1 # GOPROG MUST SWITCH TO THIS EBANK
058597,000022:
058598,000023: 01,3520 COUNT 01/RSROU
058599,000024:
058600,000025: 01,3520 30161 RESTARTS CA MPAC +5 # GET GROUP NUMBER -1
058601,000026: 01,3521 60000 DOUBLE # SAVE FOR INDEXING
058602,000027: 01,3522 54155 TS TEMP2G
058603,000028:
058604,000029: 01,3523 33762 CA PHS2CADR # SET UP EXIT IN CASE IT IS AN EVEN
058605,000030: 01,3524 54157 TS TEMPSWCH # TABLE PHASE
058606,000031:
058607,000032: 01,3525 33557 CA RTRNCADR # TO SAVE TIME ASSUME IT WILL GET NEXT
058608,000033: 01,3526 54707 TS GOLOC +2 # GROUP AFTER THIS
058609,000034:
058610,000035: 01,3527 30154 CA TEMPPHS
058611,000036: 01,3530 74744 MASK OCT1400
058612,000037: 01,3531 10000 CCS A # IS IT A VARIABLE OR TABLE RESTART
058613,000038: 01,3532 13543 TCF ITSAVAR # IT:S A VARIABLE RESTART
058614,000039:
058615,000040: 01,3533 10154 GETPART2 CCS TEMPPHS # IS IT AN X.1 RESTART
058616,000041: 01,3534 10000 CCS A
058617,000042: 01,3535 13643 TCF ITSATBL # NO, ITS A TABLE RESTART
058618,000043:
058619,000044: 01,3536 34761 CA PRIO14 # IT IS AN X.1 RESTART, THEREFORE START
058620,000045: 01,3537 05042 TC FINDVAC # THE DISPLAY RESTART JOB
058621,000046: 01,3540 E3,1400 EBANK= LST1
058622,000047: 01,3540 03165 20103 2CADR INITDSP
058623,000048:
058624,000049: 01,3542 03557 TC RTRNCADR # FINISHED WITH THIS GROUP, GET NEXT ONE
058625,000050:
058626,000051: 01,3543 74744 ITSAVAR MASK OCT1400 # IS IT TYPE B ?
058627,000052: 01,3544 10000 CCS A
058628,000053: 01,3545 13614 TCF ITSLIKEB # YES,IT IS TYPE B
058629,000054:
058630,000055: 01,3546 00006 EXTEND # STORE THE JOB (OR TASK) 2CADR FOR EXIT
058631,000056: 01,3547 50155 NDX TEMP2G
058632,000057: 01,3550 31437 DCA PHSNAME1
058633,000058: 01,3551 52706 DXCH GOLOC
058634,000059:
058635,000060: 01,3552 30154 CA TEMPPHS # SEE IF THIS IS A JOB, TASK, OR A LONGCAL
058636,000061: 01,3553 74716 MASK OCT7
058637,000062: 01,3554 67715 AD MINUS2
058638,000063: 01,3555 10000 CCS A
058639,000064: 01,3556 13726 TCF ITSLNGCL # ITS A LONGCALL
058640,000065:
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Page 1379 |
058642,000067: 01,3557 04570 RTRNCADR TC SWRETURN # CANT GET HERE
058643,000068: 01,3560 13562 TCF ITSAWAIT
058644,000069:
058645,000070: 01,3561 13627 TCF ITSAJOB # ITS A JOB
058646,000071:
058647,000072: 01,3562 33766 ITSAWAIT CA WTLTCADR # SET UP WAITLIST CALL
058648,000073: 01,3563 54704 TS GOLOC -1
058649,000074:
058650,000075: 01,3564 50155 NDX TEMP2G # DIRECTLY STORED
058651,000076: 01,3565 31054 CA PHSPRDT1
058652,000077: 01,3566 10000 TIMETEST CCS A # IS IT AN IMMEDIATE RESTART
058653,000078: 01,3567 24000 INCR A # NO,
058654,000079: 01,3570 13573 TCF FINDTIME # FIND OUT WHEN IT SHOULD BEGIN
058655,000080:
058656,000081: 01,3571 15367 TCF ITSINDIR # STORED INDIRECTLY
058657,000082:
058658,000083: 01,3572 13612 TCF IMEDIATE # IT WANTS AN IMMEDIATE RESTART
058659,000084:
058660,000085: # ***** THIS MUST BE IN FIXED FIXED *****
058661,000086:
058662,000087: 5367 BLOCK 02
058663,000088: 4000 SETLOC FFTAG2
058664,000089: 4000 BANK
058665,000090:
058666,000091: 5367 COUNT 02/RSROU
058667,000092:
058668,000093: 5367 22706 ITSINDIR LXCH GOLOC +1 # GET THE CORRECT E BANK IN CASE THIS IS
058669,000094: 5370 22006 LXCH BB # SWITCHED ERRASIBLE
058670,000095:
058671,000096: 5371 50000 NDX A # GET THE TIME INDIRECTLY
058672,000097: 5372 30001 CA 1
058673,000098:
058674,000099: 5373 22006 LXCH BB # RESTORE THE BB AND GOLOC
058675,000100: 5374 22706 LXCH GOLOC +1
058676,000101:
058677,000102: 5375 13573 TCF FINDTIME # FIND OUT WHEN IT SHOULD BEGIN
058678,000103:
058679,000104: # ***** YOU MAY RETURN TO SWITCHED FIXED *****
058680,000105:
058681,000106: 01,3573 BANK 01
058682,000107: 01,2000 SETLOC RESTART
058683,000108: 01,2000 BANK
058684,000109:
058685,000110: 01,3573 COUNT 01/RSROU
058686,000111:
058687,000112: 01,3573 40000 FINDTIME COM # MAKE NEGITIVE SINCE IT WILL BE SUBTRACTD
058688,000113: 01,3574 54001 TS L # AND SAVE
058689,000114: 01,3575 50155 NDX TEMP2G
058690,000115: 01,3576 41053 CS TBASE1
058691,000116: 01,3577 00006 EXTEND
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Page 1380 |
058693,000118: 01,3600 60025 SU TIME1
058694,000119: 01,3601 10000 CCS A
058695,000120: 01,3602 40000 COM
058696,000121: 01,3603 67700 AD OCT37776
058697,000122: 01,3604 64712 AD ONE
058698,000123: 01,3605 60001 AD L
058699,000124: 01,3606 10000 CCS A
058700,000125: 01,3607 34714 CA ZERO
058701,000126: 01,3610 13612 TCF +2
058702,000127: 01,3611 13612 TCF +1
058703,000128: 01,3612 64712 IMEDIATE AD ONE
058704,000129: 01,3613 00704 TC GOLOC -1
058705,000130: 01,3614 33557 ITSLIKEB CA RTRNCADR # TYPE B, SO STORE RETURN IN
058706,000131: 01,3615 54157 TS TEMPSWCH # TEMPSWCH IN CASE OF AN EVEN PHASE
058707,000132:
058708,000133: 01,3616 33763 CA PRT2CADR # SET UP EXIT TO GET TABLE PART OF THIS
058709,000134: 01,3617 54707 TS GOLOC +2 # VARIABLE TYPE OF PHASE
058710,000135:
058711,000136: 01,3620 30154 CA TEMPPHS # MAKE THE PHASE LOOK RIGHT FOR THE TABLE
058712,000137: 01,3621 76043 MASK OCT177 # PART OF THIS VARIABLE PHASE
058713,000138: 01,3622 54154 TS TEMPPHS
058714,000139:
058715,000140: 01,3623 00006 EXTEND
058716,000141: 01,3624 50155 NDX TEMP2G # OBTAIN THE JOB:S 2CADR
058717,000142: 01,3625 31437 DCA PHSNAME1
058718,000143: 01,3626 52706 DXCH GOLOC
058719,000144:
058720,000145: 01,3627 50155 ITSAJOB NDX TEMP2G # NOW ADD THE PRIORITY AND LET:S GO
058721,000146: 01,3630 31054 CA PHSPRDT1
058722,000147: 01,3631 54704 CHKNOVAC TS GOLOC -1 # SAVE PRIO UNTIL WE SEE IF ITS
058723,000148: 01,3632 00006 EXTEND # A FINDVAC OR A NOVAC
058724,000149: 01,3633 63637 BZMF ITSNOVAC
058725,000150:
058726,000151: 01,3634 33765 CAF FVACCADR # POSITIVE, SET UP FINDVAC CALL.
058727,000152: 01,3635 56704 XCH GOLOC -1 # PICK UP PRIO,
058728,000153: 01,3636 00704 TC GOLOC -1 # AND GO
058729,000154:
058730,000155: 01,3637 33767 ITSNOVAC CAF NOVACADR # NEGATIVE,
058731,000156: 01,3640 56704 XCH GOLOC -1 # SET UP NOVAC CALL,
058732,000157: 01,3641 40000 COM # CORRECT PRIO,
058733,000158: 01,3642 00704 TC GOLOC -1 # AND GO
058734,000159:
058735,000160: 01,3643 54020 ITSATBL TS CYR # FIND OUT IF THE PHASE IS ODD OR EVEN
058736,000161: 01,3644 10020 CCS CYR
058737,000162: 01,3645 13646 TCF +1 # IT:S EVEN
058738,000163: 01,3646 13744 TCF ITSEVEN
058739,000164:
058740,000165: 01,3647 33557 CA RTRNCADR # IN CASE THIS IS THE SECOND PART OF A
058741,000166: 01,3650 54707 TS GOLOC +2 # TYPE B RESTART, WE NEED PROPER EXIT
058742,000167:
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Page 1381 |
058744,000169: 01,3651 30154 CA TEMPPHS # SET UP POINTER FOR FINDING OUR PLACE IN
058745,000170: 01,3652 54021 TS SR # THE RESTART TABLES
058746,000171: 01,3653 60021 AD SR
058747,000172: 01,3654 50155 NDX TEMP2G
058748,000173: 01,3655 62001 AD SIZETAB +1
058749,000174: 01,3656 54156 TS POINTER
058750,000175:
058751,000176: 01,3657 00006 CONTBL2 EXTEND # FIND OUT WHAT:S IN THE TABLE
058752,000177: 01,3660 50156 NDX POINTER
058753,000178: 01,3661 32002 DCA CADRTAB # GET THE 2CADR
058754,000179:
058755,000180: 01,3662 22706 LXCH GOLOC +1 # STORE THE BB INFORMATION
058756,000181:
058757,000182: 01,3663 10000 CCS A # IS IT A JOB OR IS IT TIMED
058758,000183: 01,3664 24000 INCR A # POSITIVE, MUST BE A JOB
058759,000184: 01,3665 13740 TCF ITSAJOB2
058760,000185:
058761,000186: 01,3666 24000 INCR A # MUST BE EITHER A WAITLIST OR LONGCALL
058762,000187: 01,3667 54705 TS GOLOC # LET-S STORE THE CORRECT CADR
058763,000188:
058764,000189: 01,3670 33766 CA WTLTCADR # SET UP OUR EXIT TO WAITLIST
058765,000190: 01,3671 54704 TS GOLOC -1
058766,000191:
058767,000192: 01,3672 30706 CA GOLOC +1 # NOW FIND OUT IF IT IS A WAITLIST CALL
058768,000193: 01,3673 74701 MASK BIT10 # THIS SHOULD BE ONE IF WE HAVE -BB
058769,000194: 01,3674 10000 CCS A # FOR THAT MATTER SO SHOULD BE BITS 9,8,7,
058770,000195: # 6,5, AND LAST BUT NOT LEAST (PERHAPS NOT
058771,000196: # IN IMPORTANCE ANYWAY. BIT 4
058772,000197: 01,3675 13733 TCF ITSWTLST # IT IS A WAITLIST CALL
058773,000198:
058774,000199: 01,3676 50156 NDX POINTER # OBTAIN THE ORIGINAL DELTA T
058775,000200: 01,3677 32000 CA PRDTTAB # ADDRESS FOR THIS LONGCALL
058776,000201:
058777,000202: 01,3700 15376 TCF ITSLGCL1 # NOW GO GET THE DELTA TIME
058778,000203:
058779,000204: # ***** THIS MUST BE IN FIXED FIXED *****
058780,000205:
058781,000206: 5376 BLOCK 02
058782,000207: 4000 SETLOC FFTAG2
058783,000208: 4000 BANK
058784,000209:
058785,000210: 5376 COUNT 02/RSROU
058786,000211:
058787,000212: 5376 22706 ITSLGCL1 LXCH GOLOC +1 # OBTAIN THE CORRECT E BANK
058788,000213: 5377 22006 LXCH BB
058789,000214: 5400 22706 LXCH GOLOC +1 # AND PRESERVE OUR E AND F BANKS
058790,000215:
058791,000216: 5401 00006 EXTEND # GET THE DELTA TIME
058792,000217: 5402 50000 NDX A
058793,000218: 5403 30001 DCA 0
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Page 1382 |
058795,000220: 5404 22706 LXCH GOLOC +1 # RESTORE OUR E AND F BANK
058796,000221: 5405 22006 LXCH BB # RESTORE THE TASKS E AND F BANKS
058797,000222: 5406 22706 LXCH GOLOC +1 # AND PRESERVE OUR L
058798,000223:
058799,000224: 5407 13701 TCF ITSLGCL2 # NOW LET:S PROCESS THIS LONGCALL
058800,000225:
058801,000226: # ***** YOU MAY RETURN TO SWITCHED FIXED *****
058802,000227:
058803,000228: 01,3701 BANK 01
058804,000229: 01,2000 SETLOC RESTART
058805,000230: 01,2000 BANK
058806,000231:
058807,000232: 01,3701 COUNT 01/RSROU
058808,000233:
058809,000234: 01,3701 53140 ITSLGCL2 DXCH LONGTIME
058810,000235:
058811,000236: 01,3702 00006 EXTEND # CALCULATE TIME LEFT
058812,000237: 01,3703 40025 DCS TIME2
058813,000238: 01,3704 21140 DAS LONGTIME
058814,000239: 01,3705 00006 EXTEND
058815,000240: 01,3706 31136 DCA LONGBASE
058816,000241: 01,3707 21140 DAS LONGTIME
058817,000242:
058818,000243: 01,3710 11137 CCS LONGTIME # FIND OUT HOW THIS SHOULD BE RESTARTED
058819,000244: 01,3711 13721 TCF LONGCLCL
058820,000245: 01,3712 13714 TCF +2
058821,000246: 01,3713 13607 TCF IMEDIATE -3
058822,000247: 01,3714 11140 CCS LONGTIME +1
058823,000248: 01,3715 13721 TCF LONGCLCL
058824,000249: 01,3716 13717 NOOP # CAN:T GET HERE *********
058825,000250: 01,3717 13607 TCF IMEDIATE -3
058826,000251: 01,3720 13612 TCF IMEDIATE
058827,000252:
058828,000253: 01,3721 33764 LONGCLCL CA LGCLCADR # WE WILL GO TO LONGCALL
058829,000254: 01,3722 54704 TS GOLOC -1
058830,000255:
058831,000256: 01,3723 00006 EXTEND # PREPARE OUR ENTRY TO LONGCALL
058832,000257: 01,3724 31140 DCA LONGTIME
058833,000258: 01,3725 00704 TC GOLOC -1
058834,000259:
058835,000260: 01,3726 33766 ITSLNGCL CA WTLTCADR # ASSUME IT WILL GO TO WAITLIST
058836,000261: 01,3727 54704 TS GOLOC -1
058837,000262:
058838,000263: 01,3730 50155 NDX TEMP2G
058839,000264: 01,3731 41054 CS PHSPRDT1 # GET THE DELTA T ADDRESS
058840,000265:
058841,000266: 01,3732 15376 TCF ITSLGCL1 # NOW GET THE DELTA TIME
058842,000267:
058843,000268: 01,3733 40706 ITSWTLST CS GOLOC +1 # CORRECT THE BBCON INFORMATION
058844,000269: 01,3734 54706 TS GOLOC +1
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Page 1383 |
058846,000271: 01,3735 50156 NDX POINTER # GET THE DT AND FIND OUT IF IT WAS STORED
058847,000272: 01,3736 32000 CA PRDTTAB # DIRECTLY OR INDIRECTLY
058848,000273:
058849,000274: 01,3737 13566 TCF TIMETEST # FIND OUT HOW THE TIME IS STORED
058850,000275:
058851,000276: 01,3740 56705 ITSAJOB2 XCH GOLOC # STORE THE CADR
058852,000277:
058853,000278: 01,3741 50156 NDX POINTER # ADD THE PRIORITY AND LET:S GO
058854,000279: 01,3742 32000 CA PRDTTAB
058855,000280:
058856,000281: 01,3743 13631 TCF CHKNOVAC
058857,000282:
058858,000283: 01,3744 30157 ITSEVEN CA TEMPSWCH # SET UP FOR EITHER THE SECOND PART OF THE
058859,000284: 01,3745 54707 TS GOLOC +2 # TABLE, OR A RETURN FOR THE NEXT GROUP
058860,000285:
058861,000286: 01,3746 50155 NDX TEMP2G # SET UP POINTER FOR OUR LOCATION WITHIN
058862,000287: 01,3747 32000 CA SIZETAB # THE TABLE
058863,000288: 01,3750 60154 AD TEMPPHS # THIS MAY LOOK BAD BUT LET:S SEE YOU DO
058864,000289: 01,3751 60154 AD TEMPPHS # BETTER IN TIME OR NUMBERR OF LOCATIONS
058865,000290: 01,3752 60154 AD TEMPPHS
058866,000291: 01,3753 54156 TS POINTER
058867,000292:
058868,000293: 01,3754 13657 TCF CONTBL2 # NOW PROCESS WHAT IS IN THE TABLE
058869,000294:
058870,000295: 01,3755 36214 PHSPART2 CA THREE # SET THE POINTER FOR THE SECOND HALF OF
058871,000296: 01,3756 26156 ADS POINTER # THE TABLE
058872,000297:
058873,000298: 01,3757 33557 CA RTRNCADR # THIS WILL BE OUR LAST TIME THROUGH THE
058874,000299: 01,3760 54707 TS GOLOC +2 # EVEN TABLE , SO AFTER IT GET THE NEXT
058875,000300: # GROUP
058876,000301: 01,3761 13657 TCF CONTBL2 # SO LET:S GET THE SECOND ENTRY IN THE TBL
058877,000302:
058878,000303: 01,3762 0154 TEMPPHS EQUALS MPAC
058879,000304: 01,3762 0155 TEMP2G EQUALS MPAC +1
058880,000305: 01,3762 0156 POINTER EQUALS MPAC +2
058881,000306: 01,3762 0157 TEMPSWCH EQUALS MPAC +3
058882,000307: 01,3762 0705 GOLOC EQUALS VAC5 +20D
058883,000308: 01,3762 7715 MINUS2 EQUALS NEG2
058884,000309: 01,3762 6043 OCT177 EQUALS LOW7
058885,000310:
058886,000311:
058887,000312: 01,3762 03755 PHS2CADR GENADR PHSPART2
058888,000313: 01,3763 03533 PRT2CADR GENADR GETPART2
058889,000314: 01,3764 05231 LGCLCADR GENADR LONGCALL
058890,000315: 01,3765 05042 FVACCADR GENADR FINDVAC
058891,000316: 01,3766 05140 WTLTCADR GENADR WAITLIST
058892,000317: 01,3767 05027 NOVACADR GENADR NOVAC
End of include-file RESTARTS_ROUTINE.agc. Parent file is MAIN.agc