Source Code
059806,000001: # Copyright: Public domain.
059807,000002: # Filename: RESTARTS_ROUTINE.agc
059808,000003: # Purpose: Part of the source code for Colossus, build 249.
059809,000004: # It is part of the source code for the Command Module's (CM)
059810,000005: # Apollo Guidance Computer (AGC), possibly for Apollo 8 and 9.
059811,000006: # Assembler: yaYUL
059812,000007: # Reference: Starts on p. 1404 of 1701.pdf.
059813,000008: # Contact: Ron Burkey <info@sandroid.org>.
059814,000009: # Website: www.ibiblio.org/apollo.
059815,000010: # Mod history: 08/30/04 RSB. Adapted from corresponding Luminary131 file.
059816,000011: # 2010-10-24 JL Added missing # in comment.
059817,000012:
059818,000013: # The contents of the "Colossus249" files, in general, are transcribed
059819,000014: # from a scanned document obtained from MIT's website,
059820,000015: # http://hrst.mit.edu/hrs/apollo/public/archive/1701.pdf. Notations on this
059821,000016: # document read, in part:
059822,000017:
059823,000018: # Assemble revision 249 of AGC program Colossus by NASA
059824,000019: # 2021111-041. October 28, 1968.
059825,000020:
059826,000021: # This AGC program shall also be referred to as
059827,000022: # Colossus 1A
059828,000023:
059829,000024: # Prepared by
059830,000025: # Massachusetts Institute of Technology
059831,000026: # 75 Cambridge Parkway
059832,000027: # Cambridge, Massachusetts
059833,000028: # under NASA contract NAS 9-4065.
059834,000029:
059835,000030: # Refer directly to the online document mentioned above for further information.
059836,000031: # Please report any errors (relative to 1701.pdf) to info@sandroid.org.
059837,000032:
059838,000033: # In some cases, where the source code for Luminary 131 overlaps that of
059839,000034: # Colossus 249, this code is instead copied from the corresponding Luminary 131
059840,000035: # source file, and then is proofed to incorporate any changes.
059841,000036:
059842,000037: # Page 1404
059843,000038: 01,3520 BANK 01
059844,000039: 01,2000 SETLOC RESTART
059845,000040: 01,2000 BANK
059846,000041:
059847,000042: 01,3520 E3,1436 EBANK= PHSNAME1 # GOPROG MUST SWITCH TO THIS EBANK
059848,000043:
059849,000044: 01,3520 COUNT 01/RSROU
059850,000045:
059851,000046: 01,3520 30161 RESTARTS CA MPAC +5 # GET GROUP NUMBER -1
059852,000047: 01,3521 60000 DOUBLE # SAVE FOR INDEXING
059853,000048: 01,3522 54155 TS TEMP2G
059854,000049:
059855,000050: 01,3523 33762 CA PHS2CADR # SET UP EXIT IN CASE IT IS AN EVEN
059856,000051: 01,3524 54157 TS TEMPSWCH # TABLE PHASE
059857,000052:
059858,000053: 01,3525 33557 CA RTRNCADR # TO SAVE TIME ASSUME IT WILL GET NEXT
059859,000054: 01,3526 54707 TS GOLOC +2 # GROUP AFTER THIS
059860,000055:
059861,000056: 01,3527 30154 CA TEMPPHS
059862,000057: 01,3530 74744 MASK OCT1400
059863,000058: 01,3531 10000 CCS A # IS IT A VARIABLE OR TABLE RESTART
059864,000059: 01,3532 13543 TCF ITSAVAR # IT'S A VARIABLE RESTART
059865,000060:
059866,000061: 01,3533 10154 GETPART2 CCS TEMPPHS # IS IT AN X.1 RESTART
059867,000062: 01,3534 10000 CCS A
059868,000063: 01,3535 13643 TCF ITSATBL # NO, IT'S A TABLE RESTART
059869,000064:
059870,000065: 01,3536 34761 CA PRIO14 # IT IS AN X.1 RESTART, THEREFORE START
059871,000066: 01,3537 05042 TC FINDVAC # THE DISPLAY RESTART JOB
059872,000067: 01,3540 E3,1400 EBANK= LST1
059873,000068: 01,3540 03165 20103 2CADR INITDSP
059874,000069:
059875,000070: 01,3542 03557 TC RTRNCADR # FINISHED WITH THIS GROUP, GET NEXT ONE
059876,000071:
059877,000072: 01,3543 74744 ITSAVAR MASK OCT1400 # IS IT TYPE B ?
059878,000073: 01,3544 10000 CCS A
059879,000074: 01,3545 13614 TCF ITSLIKEB # YES, IT IS TYPE B
059880,000075:
059881,000076: 01,3546 00006 EXTEND # STORES THE JOB (OR TASK) 2CADR FOR EXIT
059882,000077: 01,3547 50155 NDX TEMP2G
059883,000078: 01,3550 31437 DCA PHSNAME1
059884,000079: 01,3551 52706 DXCH GOLOC
059885,000080:
059886,000081: 01,3552 30154 CA TEMPPHS # SEE IF THIS IS A JOB, TASK, OR A LONGCALL
059887,000082: 01,3553 74716 MASK OCT7
059888,000083: 01,3554 67715 AD MINUS2
059889,000084: 01,3555 10000 CCS A
059890,000085: 01,3556 13726 TCF ITSLNGCL # IT'S A LONGCALL
059891,000086:
059892,000087: # Page 1405
059893,000088: 01,3557 04570 RTRNCADR TC SWRETURN # CAN'T GET HERE.
059894,000089: 01,3560 13562 TCF ITSAWAIT
059895,000090:
059896,000091: 01,3561 13627 TCF ITSAJOB # IT'S A JOB
059897,000092:
059898,000093: 01,3562 33766 ITSAWAIT CA WTLTCADR # SET UP WAITLIST CALL
059899,000094: 01,3563 54704 TS GOLOC -1
059900,000095:
059901,000096: 01,3564 50155 NDX TEMP2G # DIRECTLY STORED
059902,000097: 01,3565 31054 CA PHSPRDT1
059903,000098: 01,3566 10000 TIMETEST CCS A # IS IT AN IMMEDIATE RESTART
059904,000099: 01,3567 24000 INCR A # NO.
059905,000100: 01,3570 13573 TCF FINDTIME # FIND OUT WHEN IT SHOULD BEGIN
059906,000101:
059907,000102: 01,3571 15367 TCF ITSINDIR # STORED INDIRECTLY
059908,000103:
059909,000104: 01,3572 13612 TCF IMEDIATE # IT WANTS AN IMMEDIATE RESTART
059910,000105:
059911,000106: # ***** THIS MUST BE IN FIXED FIXED *****
059912,000107:
059913,000108: 5367 BLOCK 02
059914,000109: 4000 SETLOC FFTAG2
059915,000110: 4000 BANK
059916,000111:
059917,000112: 5367 COUNT 02/RSROU
059918,000113:
059919,000114: 5367 22706 ITSINDIR LXCH GOLOC +1 # GET THE CORRECT E BANK IN CASE THIS IS
059920,000115: 5370 22006 LXCH BB # SWITCHED ERASABLE
059921,000116:
059922,000117: 5371 50000 NDX A # GET THE TIME INDIRECTLY
059923,000118: 5372 30001 CA 1
059924,000119:
059925,000120: 5373 22006 LXCH BB # RESTORE THE BB AND GOLOC
059926,000121: 5374 22706 LXCH GOLOC +1
059927,000122:
059928,000123: 5375 13573 TCF FINDTIME # FIND OUT WHEN IT SHOULD BEGIN
059929,000124:
059930,000125: # ***** YOU MAY RETURN TO SWITCHED FIXED *****
059931,000126:
059932,000127: 01,3573 BANK 01
059933,000128: 01,2000 SETLOC RESTART
059934,000129: 01,2000 BANK
059935,000130:
059936,000131: 01,3573 COUNT 01/RSROU
059937,000132:
059938,000133: 01,3573 40000 FINDTIME COM # MAKE NEGATIVE SINCE IT WILL BE SUBTRACTED
059939,000134: 01,3574 54001 TS L # AND SAVE
059940,000135: 01,3575 50155 NDX TEMP2G
059941,000136: 01,3576 41053 CS TBASE1
059942,000137: 01,3577 00006 EXTEND
059943,000138: # Page 1406
059944,000139: 01,3600 60025 SU TIME1
059945,000140: 01,3601 10000 CCS A
059946,000141: 01,3602 40000 COM
059947,000142: 01,3603 67700 AD OCT37776
059948,000143: 01,3604 64712 AD ONE
059949,000144: 01,3605 60001 AD L
059950,000145: 01,3606 10000 CCS A
059951,000146: 01,3607 34714 CA ZERO
059952,000147: 01,3610 13612 TCF +2
059953,000148: 01,3611 13612 TCF +1
059954,000149: 01,3612 64712 IMEDIATE AD ONE
059955,000150: 01,3613 00704 TC GOLOC -1
059956,000151: 01,3614 33557 ITSLIKEB CA RTRNCADR # TYPE B, SO STORE RETURN IN
059957,000152: 01,3615 54157 TS TEMPSWCH # TEMPSWCH IN CASE OF AN EVEN PHASE
059958,000153:
059959,000154: 01,3616 33763 CA PRT2CADR # SET UP EXIT TO GET TABLE PART OF THIS
059960,000155: 01,3617 54707 TS GOLOC +2 # VARIABLE TYPE OF PHASE
059961,000156:
059962,000157: 01,3620 30154 CA TEMPPHS # MAKE THE PHASE LOOK RIGHT FOR THE TABLE
059963,000158: 01,3621 76043 MASK OCT177 # PART OF THIS VARIABLE PHASE
059964,000159: 01,3622 54154 TS TEMPPHS
059965,000160:
059966,000161: 01,3623 00006 EXTEND
059967,000162: 01,3624 50155 NDX TEMP2G # OBTAIN THE JOB'S 2CADR
059968,000163: 01,3625 31437 DCA PHSNAME1
059969,000164: 01,3626 52706 DXCH GOLOC
059970,000165:
059971,000166: 01,3627 50155 ITSAJOB NDX TEMP2G # NOW ADD THE PRIORITY AND LET'S GO
059972,000167: 01,3630 31054 CA PHSPRDT1
059973,000168: 01,3631 54704 CHKNOVAC TS GOLOC -1 # SAVE PRIO UNTIL WE SEE IF IT'S
059974,000169: 01,3632 00006 EXTEND # A FINDVAC OR A NOVAC
059975,000170: 01,3633 63637 BZMF ITSNOVAC
059976,000171:
059977,000172: 01,3634 33765 CAF FVACCADR # POSITIVE, SET UP FINDVAC CALL.
059978,000173: 01,3635 56704 XCH GOLOC -1 # PICK UP PRIO
059979,000174: 01,3636 00704 TC GOLOC -1 # AND GO
059980,000175:
059981,000176: 01,3637 33767 ITSNOVAC CAF NOVACADR # NEGATIVE,
059982,000177: 01,3640 56704 XCH GOLOC -1 # SET UP NOVAC CALL,
059983,000178: 01,3641 40000 COM # CORRECT PRIO,
059984,000179: 01,3642 00704 TC GOLOC -1 # AND GO
059985,000180:
059986,000181: 01,3643 54020 ITSATBL TS CYR # FIND OUT IF THE PHASE IS ODD OR EVEN
059987,000182: 01,3644 10020 CCS CYR
059988,000183: 01,3645 13646 TCF +1 # IT'S EVEN
059989,000184: 01,3646 13744 TCF ITSEVEN
059990,000185:
059991,000186: 01,3647 33557 CA RTRNCADR # IN CASE THIS IS THE SECOND PART OF A
059992,000187: 01,3650 54707 TS GOLOC +2 # TYPE B RESTART, WE NEED PROPER EXIT
059993,000188: # Page 1407
059994,000189: 01,3651 30154 CA TEMPPHS # SET UP POINTER FOR FINDING OUR PLACE IN
059995,000190: 01,3652 54021 TS SR # THE RESTART TABLES
059996,000191: 01,3653 60021 AD SR
059997,000192: 01,3654 50155 NDX TEMP2G
059998,000193: 01,3655 62001 AD SIZETAB +1
059999,000194: 01,3656 54156 TS POINTER
060000,000195:
060001,000196: 01,3657 00006 CONTBL2 EXTEND # FIND OUT WHAT'S IN THE TABLE
060002,000197: 01,3660 50156 NDX POINTER
060003,000198: 01,3661 32002 DCA CADRTAB # GET THE 2CADR
060004,000199:
060005,000200: 01,3662 22706 LXCH GOLOC +1 # STORE THE BB INFORMATION
060006,000201:
060007,000202: 01,3663 10000 CCS A # IS IT A JOB OR IT IT TIMED
060008,000203: 01,3664 24000 INCR A # POSITIVE, MUST BE A JOB
060009,000204: 01,3665 13740 TCF ITSAJOB2
060010,000205:
060011,000206: 01,3666 24000 INCR A # MUST BE EITHER A WAITLIST OR LONGCALL
060012,000207: 01,3667 54705 TS GOLOC # LET'S STORE THE CORRECT CADR
060013,000208:
060014,000209: 01,3670 33766 CA WTLTCADR # SET UP OUR EXIT TO WAITLIST
060015,000210: 01,3671 54704 TS GOLOC -1
060016,000211:
060017,000212: 01,3672 30706 CA GOLOC +1 # NOW FIND OUT IF IT IS A WAITLIST CALL
060018,000213: 01,3673 74701 MASK BIT10 # THIS SHOULD BE ONE IF WE HAVE -BB
060019,000214: 01,3674 10000 CCS A # FOR THAT MATTER SO SHOULD BE BITS 9,8,7,
060020,000215: # 6,5, AND LAST BUT NOT LEAST (PERHAPS NOT
060021,000216: # IN IMPORTANCE ANYWAY. BUT 4
060022,000217: 01,3675 13733 TCF ITSWTLST # IT IS A WAITLIST CALL
060023,000218:
060024,000219: 01,3676 50156 NDX POINTER # OBTAIN THE ORIGINAL DELTA T
060025,000220: 01,3677 32000 CA PRDTTAB # ADDRESS FOR THIS LONGCALL
060026,000221:
060027,000222: 01,3700 15376 TCF ITSLGCL1 # NOW GO GET THE DELTA TIME
060028,000223:
060029,000224: # ***** THIS MUST BE IN FIXED FIXED *****
060030,000225:
060031,000226: 5376 BLOCK 02
060032,000227: 4000 SETLOC FFTAG2
060033,000228: 4000 BANK
060034,000229:
060035,000230: 5376 COUNT 02/RSROU
060036,000231:
060037,000232: 5376 22706 ITSLGCL1 LXCH GOLOC +1 # OBTAIN THE CORRECT E BANK
060038,000233: 5377 22006 LXCH BB
060039,000234: 5400 22706 LXCH GOLOC +1 # AND PRESERVE OUR E AND F BANKS
060040,000235:
060041,000236: 5401 00006 EXTEND # GET THE DELTA TIME
060042,000237: 5402 50000 NDX A
060043,000238: 5403 30001 DCA 0
060044,000239: # Page 1408
060045,000240: 5404 22706 LXCH GOLOC +1 # RESTORE OUR E AND F BANK
060046,000241: 5405 22006 LXCH BB # RESTORE THE TASKS E AND F BANKS
060047,000242: 5406 22706 LXCH GOLOC +1 # AND PRESERVE OUR L
060048,000243: 5407 13701 TCF ITSLGCL2 # NOT GET'S PROCESS THIS LONGCALL
060049,000244:
060050,000245: # ***** YOU MAY RETURN TO SWITCHED FIXED *****
060051,000246:
060052,000247: 01,3701 BANK 01
060053,000248: 01,2000 SETLOC RESTART
060054,000249: 01,2000 BANK
060055,000250:
060056,000251: 01,3701 COUNT 01/RSROU
060057,000252: 01,3701 53140 ITSLGCL2 DXCH LONGTIME
060058,000253:
060059,000254: 01,3702 00006 EXTEND # CALCULATE TIME LEFT
060060,000255: 01,3703 40025 DCS TIME2
060061,000256: 01,3704 21140 DAS LONGTIME
060062,000257: 01,3705 00006 EXTEND
060063,000258: 01,3706 31136 DCA LONGBASE
060064,000259: 01,3707 21140 DAS LONGTIME
060065,000260:
060066,000261: 01,3710 11137 CCS LONGTIME # FIND OUT HOW THIS SHOULD BE RESTARTED
060067,000262: 01,3711 13721 TCF LONGCLCL
060068,000263: 01,3712 13714 TCF +2
060069,000264: 01,3713 13607 TCF IMEDIATE -3
060070,000265: 01,3714 11140 CCS LONGTIME +1
060071,000266: 01,3715 13721 TCF LONGCLCL
060072,000267: 01,3716 13717 NOOP # CAN'T GET HERE ************
060073,000268: 01,3717 13607 TCF IMEDIATE -3
060074,000269: 01,3720 13612 TCF IMEDIATE
060075,000270:
060076,000271: 01,3721 33764 LONGCLCL CA LGCLCADR # WE WILL GO TO LONGCALL
060077,000272: 01,3722 54704 TS GOLOC -1
060078,000273:
060079,000274: 01,3723 00006 EXTEND # PREPARE OUR ENTRY TO LONGCALL
060080,000275: 01,3724 31140 DCA LONGTIME
060081,000276: 01,3725 00704 TC GOLOC -1
060082,000277:
060083,000278: 01,3726 33766 ITSLNGCL CA WTLTCADR # ASSUME IT WILL GO TO WAITLIST
060084,000279: 01,3727 54704 TS GOLOC -1
060085,000280:
060086,000281: 01,3730 50155 NDX TEMP2G
060087,000282: 01,3731 41054 CS PHSPRDT1 # GET THE DELTA T ADDRESS
060088,000283:
060089,000284: 01,3732 15376 TCF ITSLGCL1 # NOW GET THE DELTA TIME
060090,000285:
060091,000286: 01,3733 40706 ITSWTLST CS GOLOC +1 # CORRECT THE BBCON INFORMATION
060092,000287: 01,3734 54706 TS GOLOC +1
060093,000288: # Page 1409
060094,000289: 01,3735 50156 NDX POINTER # GET THE DT AND FIND OUT IF IT WAS STORED
060095,000290: 01,3736 32000 CA PRDTTAB # DIRECTOY OR INDIRECTLY
060096,000291:
060097,000292: 01,3737 13566 TCF TIMETEST # FIND OUT HOW THE TIME IS STORED
060098,000293:
060099,000294: 01,3740 56705 ITSAJOB2 XCH GOLOC # STORE THE CADR
060100,000295:
060101,000296: 01,3741 50156 NDX POINTER # ADD THE PRIORITY AND LET'S GO
060102,000297: 01,3742 32000 CA PRDTTAB
060103,000298:
060104,000299: 01,3743 13631 TCF CHKNOVAC
060105,000300:
060106,000301: 01,3744 30157 ITSEVEN CA TEMPSWCH # SET FOR EITHER THE SECOND PART OF THE
060107,000302: 01,3745 54707 TS GOLOC +2 # TABLE, OR A RETURN FOR THE NEXT GROUP
060108,000303:
060109,000304: 01,3746 50155 NDX TEMP2G # SET UP POINTER FOR OUR LOCATION WITHIN
060110,000305: 01,3747 32000 CA SIZETAB # THE TABLE
060111,000306: 01,3750 60154 AD TEMPPHS # THIS MAY LOOK BAD BUT LET'S SEE YOU DO
060112,000307: 01,3751 60154 AD TEMPPHS # BETTER IN TIME OR NUMBER OF LOCATIONS
060113,000308: 01,3752 60154 AD TEMPPHS
060114,000309: 01,3753 54156 TS POINTER
060115,000310:
060116,000311: 01,3754 13657 TCF CONTBL2 # NO PROCESS WHAT IS IN THE TABLE
060117,000312:
060118,000313: 01,3755 36214 PHSPART2 CA THREE # SET THE POINTER FOR THE SECOND HALF OF
060119,000314: 01,3756 26156 ADS POINTER # THE TABLE
060120,000315:
060121,000316: 01,3757 33557 CA RTRNCADR # THIS WILL BE OUR LAST TIME THROUGH THE
060122,000317: 01,3760 54707 TS GOLOC +2 # EVEN TABLE, SO AFTER IT GET THE NEXT
060123,000318: # GROUP
060124,000319: 01,3761 13657 TCF CONTBL2 # SO LET'S GET THE SECOND ENTRY IN THE TBL
060125,000320:
060126,000321: 01,3762 0154 TEMPPHS EQUALS MPAC
060127,000322: 01,3762 0155 TEMP2G EQUALS MPAC +1
060128,000323: 01,3762 0156 POINTER EQUALS MPAC +2
060129,000324: 01,3762 0157 TEMPSWCH EQUALS MPAC +3
060130,000325: 01,3762 0705 GOLOC EQUALS VAC5 +20D
060131,000326: 01,3762 7715 MINUS2 EQUALS NEG2
060132,000327: 01,3762 6043 OCT177 EQUALS LOW7
060133,000328:
060134,000329: 01,3762 03755 PHS2CADR GENADR PHSPART2
060135,000330: 01,3763 03533 PRT2CADR GENADR GETPART2
060136,000331: 01,3764 05231 LGCLCADR GENADR LONGCALL
060137,000332: 01,3765 05042 FVACCADR GENADR FINDVAC
060138,000333: 01,3766 05140 WTLTCADR GENADR WAITLIST
060139,000334: 01,3767 05027 NOVACADR GENADR NOVAC
060140,000335:
060141,000336:
060142,000337:
060143,000338:
End of include-file RESTARTS_ROUTINE.agc. Parent file is MAIN.agc