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. |
049636,000002: ## Copyright: Public domain.
049637,000003: ## Filename: FIXED-FIXED_CONSTANT_POOL.agc
049638,000004: ## Purpose: Part of the source code for Colossus build 237.
049639,000005: ## This is for the Command Module's (CM) Apollo Guidance
049640,000006: ## Computer (AGC), for Apollo 8.
049641,000007: ## Assembler: yaYUL
049642,000008: ## Contact: Jim Lawton <jim DOT lawton AT gmail DOT com>
049643,000009: ## Website: www.ibiblio.org/apollo/index.html
049644,000010: ## Page Scans: www.ibiblio.org/apollo/ScansForConversion/Colossus237/
049645,000011: ## Mod history: 2011-04-11 JL Adapted from corresponding Colossus 249 file.
049646,000012: ## 2017-01-01 RSB Proofed comment text using octopus/ProoferComments,
049647,000013: ## and fixed errors found.
049648,000014: ## 2017-01-14 RSB Wherever '#' was followed by non-whitespace
049649,000015: ## (except in "##"), I inserted a space. It wasn't
049650,000016: ## wrong to do it the other way, and indeed makes more
049651,000017: ## sense in some ways, but '#' is consistently
049652,000018: ## followed by a space everywhere else, and without a
049653,000019: ## space it may be flagged in cross-diffs vs other
049654,000020: ## AGC version.
049655,000021:
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Page 1167 |
049657,000023: 4671 BLOCK 02
049658,000024:
049659,000025: 4671 COUNT* 02/FCONS
049660,000026:
049661,000027: # THE FOLLOWING TABLE OF 18 VALUES IS INDEXED. DO NOT INSERT OR REMOVE ANY QUANTITIES.
049662,000028:
049663,000029: 4671 37777 DPOSMAX OCT 37777 # MUST PRECEDE POSMAX
049664,000030: 4672 37777 POSMAX OCT 37777
049665,000031:
049666,000032: 4673 4673 LIMITS = NEG1/2
049667,000033:
049668,000034: 4673 57777 NEG1/2 OCT -20000 # USED BY SIN ROUTINE (MUST BE TWO
049669,000035: # LOCATIONS IN FRONT OF BIT14)
049670,000036: # BIT TABLE
049671,000037:
049672,000038: 4674 40000 BIT15 OCT 40000
049673,000039: 4675 20000 BIT14 OCT 20000
049674,000040: 4676 10000 BIT13 OCT 10000
049675,000041: 4677 04000 BIT12 OCT 04000
049676,000042: 4700 02000 BIT11 OCT 02000
049677,000043: 4701 01000 BIT10 OCT 01000
049678,000044: 4702 00400 BIT9 OCT 00400
049679,000045: 4703 00200 BIT8 OCT 00200
049680,000046: 4704 00100 BIT7 OCT 00100
049681,000047: 4705 00040 BIT6 OCT 00040
049682,000048: 4706 00020 BIT5 OCT 00020
049683,000049: 4707 00010 BIT4 OCT 00010
049684,000050: 4710 00004 BIT3 OCT 00004
049685,000051: 4711 00002 BIT2 OCT 00002
049686,000052: 4712 00001 BIT1 OCT 00001
049687,000053:
049688,000054:
049689,000055: # DO NOT DESTROY THIS COMBINATION, SINCE IT IS USED IN DOUBLE PRECISION INSTRUCTIONS.
049690,000056: 4713 77777 NEG0 OCT -0 # MUST PRECEDE ZERO
049691,000057: 4714 00000 ZERO OCT 0 # MUST FOLLOW NEG0
049692,000058: # BIT1 OCT 00001
049693,000059: # NO.WDS OCT 2 INTERPRETER
049694,000060: # OCTAL3 OCT 3 INTERPRETER
049695,000061: # R3D1 OCT 4 PINBALL
049696,000062: 4715 00005 FIVE OCT 5
049697,000063: # REVCNT OCT 6 INTERPRETER
049698,000064: 4716 00007 SEVEN OCT 7
049699,000065: # BIT4 OCT 00010
049700,000066: # R2D1 OCT 11 PINBALL
049701,000067: 4717 4334 OCT11 = R2D1 # P20S
049702,000068: # BINCON DEC 10 PINBALL (OCTAL 12)
049703,000069: 4717 00013 ELEVEN DEC 11 B-14
049704,000070: # OCT14 OCT 14 ALARM AND ABORT (FILLER)
049705,000071: 4720 00015 OCT15 OCT 15
049706,000072: # R1D1 OCT 16 PINBALL
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Page 1168 |
049708,000074: 4721 00017 LOW4 OCT 17
049709,000075: # BIT5 OCT 00020
049710,000076: # ND1 OCT 21 PINBALL
049711,000077: # VD1 OCT 23 PINBALL
049712,000078: # OCT24 OCT 24 SERVICE ROUTINES
049713,000079: # MD1 OCT 25 PINBALL
049714,000080: 4722 00030 BITS4&5 OCT 30
049715,000081: # OCT31 OCT 31 SERVICE ROUTINES
049716,000082: 4723 00032 CALLCODE OCT 00032
049717,000083: # LOW5 OCT 37 PINBALL
049718,000084: # 33DEC DEC 33 PINBALL (OCTAL 41)
049719,000085: # 34DEC DEC 34 PINBALL (OCTAL 42)
049720,000086: 4724 00045 TBUILDFX DEC 37 B-14 # BUILDUP FOR CONVIENCE IN DAPTESTING
049721,000087: 4725 00046 TDECAYFX DEC 38 B-14 # CONVENIENCE FOR DAPTESTING
049722,000088: # BIT6 OCT 00040
049723,000089: 4726 00050 OCT50 OCT 50
049724,000090: 4727 00055 DEC45 DEC 45 B-14
049725,000091: 4730 00060 SUPER011 OCT 60 # BITS FOR SUPERBNK SETTING 011.
049726,000092: 4731 00062 .5SEC DEC 50 B-14
049727,000093: # BIT7 OCT 00100
049728,000094:
049729,000095: 4732 4704 SUPER100 = BIT7 # BITS FOR SUPERBNK SETTING 100
049730,000096: # (LAST 4K OF ROPE)
049731,000097: 4732 00120 SUPER101 OCT 120 # BITS FOR SUPERBNK SETTING 101
049732,000098: # OCT121 OCT 121 SERVICE ROUTINES
049733,000099: # (FIRST 8K OF ACM)
049734,000100: 4733 00140 SUPER110 OCT 140 # BITS FOR SUPERBNK SETTING 110.
049735,000101: # (LAST 8K OF ACM)
049736,000102: 4734 00144 1SEC DEC 100 B-14
049737,000103: # LOW7 OCT 177 INTERPRETER
049738,000104: # BIT8 OCT 00200
049739,000105: # OT215 OCT 215 ALARM AND ABORT
049740,000106: # 8,5 OCT 00220 P20-P25 SUNDANCE
049741,000107: 4735 00310 2SECS DEC 200 B-14
049742,000108: # LOW8 OCT 377 PINBALL
049743,000109: # BIT9 OCT 00400
049744,000110: 4736 00401 GN/CCODE OCT 00401 # SET S/C CONTROL SWITCH TO G/N
049745,000111: 4737 00454 3SECS DEC 300 B-14
049746,000112: 4740 00620 4SECS DEC 400 B-14
049747,000113: 4741 00777 LOW9 OCT 777
049748,000114: # BIT10 OCT 01000
049749,000115: # 5.5DEGS DEC .03056 P20-P25 SUNDANCE (OCTAL 00765)
049750,000116: # OCT1103 OCT 1103 ALARM AND ABORT
049751,000117: 4742 01124 C5/2 DEC .0363551 # (OCTAL 01124)
049752,000118: 4743 01211 V05N09 VN 0509 # (SAME AS OCTAL 1211)
049753,000119: 4744 01400 OCT1400 OCT 01400
049754,000120: 4745 01426 V06N22 VN 0622
049755,000121: # MID5 OCT 1740 PINBALL
049756,000122: 4746 01776 BITS2-10 OCT 1776
049757,000123: 4747 01777 LOW10 OCT 1777
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Page 1169 |
049759,000125: # BIT11 OCT 02000
049760,000126: # 2K+3 OCT 2003 PINBALL
049761,000127: 4750 02177 LOW7+2K OCT 2177 # OP CODE MASK + BANK 1 FBANK SETTING.
049762,000128: 4751 02400 EBANK5 OCT 02400
049763,000129: 4752 03000 PRIO3 OCT 03000
049764,000130: 4753 03400 EBANK7 OCT 03400
049765,000131: # LOW11 OCT 3777 PINBALL
049766,000132: # BIT12 OCT 04000
049767,000133: # RELTAB OCT 04025 T4RUPT
049768,000134: 4754 05000 PRIO5 OCT 05000
049769,000135: 4755 06000 PRIO6 OCT 06000
049770,000136: 4756 07000 PRIO7 OCT 07000
049771,000137:
049772,000138: # BIT13 OCT 10000
049773,000139: # OCT 10003 T4RUPT RELTAB +1D
049774,000140: # 13,7,2 OCT 10102 P20-P25 SUNDANCE
049775,000141: 4757 11000 PRIO11 OCT 11000
049776,000142: # PRIO12 OCT 12000 BANKCALL
049777,000143: 4760 13000 PRIO13 OCT 13000
049778,000144: 4761 14000 PRIO14 OCT 14000
049779,000145: # OCT 14031 T4RUPT RELTAB +2D
049780,000146: 4762 15000 PRIO15 OCT 15000
049781,000147: 4763 16000 PRIO16 OCT 16000
049782,000148: # 85DEGS DEC .45556 P20-P25 SUNDANCE (OCTAL 16450)
049783,000149: 4764 17000 PRIO17 OCT 17000
049784,000150: 4765 17770 OCT17770 OCT 17770
049785,000151: # BIT14 OCT 20000
049786,000152: # OCT 20033 T4RUPT RELTAB +3D
049787,000153: 4766 21000 PRIO21 OCT 21000
049788,000154: 7657 BLOCK 03
049789,000155: 7657 COUNT* 03/FCONS
049790,000156:
049791,000157: 7657 22000 PRIO22 OCT 22000 # SERVICE ROUTINES
049792,000158: 7660 23000 PRIO23 OCT 23000
049793,000159: 7661 24000 PRIO24 OCT 24000
049794,000160: # 5/8+1 OCT 24001 SINGLE PRECISION SUBROUTINES
049795,000161: # OCT 24017 T4RUPT RELTAB +4D
049796,000162: 7662 25000 PRIO25 OCT 25000
049797,000163: 7663 26000 PRIO26 OCT 26000
049798,000164: 7664 27000 PRIO27 OCT 27000
049799,000165: # CHRPRIO OCT 30000 PINBALL
049800,000166: # OCT 30036 T4RUPT RELTAB +5D
049801,000167: 7665 31000 PRIO31 OCT 31000
049802,000168: 7666 31103 C1/2 DEC .7853134 # (OCTAL 31103)
049803,000169: 7667 32000 PRIO32 OCT 32000
049804,000170: 7670 33000 PRIO33 OCT 33000
049805,000171: 7671 34000 PRIO34 OCT 34000
049806,000172: # OCT 34034 T4RUPT RELTAB +6D
049807,000173: 7672 35000 PRIO35 OCT 35000
049808,000174: 7673 36000 PRIO36 OCT 36000
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Page 1170 |
049810,000176: 7674 37000 PRIO37 OCT 37000
049811,000177: 7675 37401 63/64+1 OCT 37401
049812,000178: # MID7 OCT 37600 PINBALL
049813,000179: 7676 37766 OCT37766 OCT 37766
049814,000180: 7677 37774 OCT37774 OCT 37774
049815,000181: 7700 37776 OCT37776 OCT 37776
049816,000182: # DPOSMAX OCT 37777
049817,000183: # BIT15 OCT 40000
049818,000184: # OCT40001 OCT 40001 INTERPRETER ( CS 1 INSTRUCTION)
049819,000185: 7701 40014 DLOADCOD OCT 40014
049820,000186: 7702 40015 DLOAD* OCT 40015
049821,000187: # OCT 40023 T4RUPT RELTAB +7D
049822,000188: 7703 40040 BIT15+6 OCT 40040
049823,000189: 7704 40200 OCT40200 OCT 40200
049824,000190: # OCT 44035 T4RUPT RELTAB +8D
049825,000191: # OCT 50037 T4RUPT RELTAB +9D
049826,000192: # OCT 54000 T4RUPT RELTAB +10D
049827,000193: 7705 57777 -BIT14 OCT 57777
049828,000194: # RELTAB11 OCT 60000 T4RUPT
049829,000195: 7706 65552 C3/2 DEC -.3216147 # (OCTAL 65552)
049830,000196: 7707 70000 13,14,15 OCT 70000
049831,000197: 7710 73777 -1/8 OCT 73777
049832,000198: 7711 74000 HIGH4 OCT 74000
049833,000199: 7712 74056 -ENDERAS DEC -2001 B-14 # (OCTAL 74056)
049834,000200: # HI5 OCT 76000 PINBALL
049835,000201: 7713 77700 HIGH9 OCT 77700
049836,000202: # -ENDVAC DEC -45 INTERPRETER (OCTAL 77722)
049837,000203: # -OCT10 OCT -10 (OCT 77767)
049838,000204: # NEG4 DEC -4 (OCTAL 77773)
049839,000205: 7714 77774 NEG3 DEC -3 B-14
049840,000206: 7715 77775 NEG2 OCT 77775
049841,000207: 7716 77776 NEGONE DEC -1 B-14
049842,000208:
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Page 1171 |
049844,000210: # DEFINED BY EQUALS
049845,000211:
049846,000212: # IT WOULD BE TO THE USERS ADVANTAGE TO OCCASIONALLY CHECK ANY OF THESE SYMBOLS IN ORDER TO PREVENT ANY
049847,000213: # ACCIDENTAL DEFINITION CHANGES.
049848,000214:
049849,000215: 7717 7716 MINUS1 = NEG1
049850,000216: 7717 7716 NEG1 = NEGONE
049851,000217: 7717 4712 ONE = BIT1
049852,000218: 7717 4711 TWO = BIT2
049853,000219: 7717 6214 THREE = OCTAL3
049854,000220: 7717 6214 LOW2 = THREE
049855,000221: 7717 4710 FOUR = BIT3
049856,000222: 7717 6211 SIX = REVCNT
049857,000223: 7717 4716 LOW3 = SEVEN
049858,000224: 7717 4707 EIGHT = BIT4
049859,000225: 7717 4334 NINE = R2D1
049860,000226: 7717 4377 TEN = BINCON
049861,000227: 7717 4717 NOUTCON = ELEVEN
049862,000228: 7717 4374 OCT23 = VD1
049863,000229: 7717 4376 OCT25 = MD1
049864,000230: 7717 4701 PRIO1 = BIT10
049865,000231: 7717 4744 EBANK3 = OCT1400
049866,000232: 7717 4700 PRIO2 = BIT11
049867,000233: 7717 4732 OCT120 = SUPER101
049868,000234: 7717 4733 OCT140 = SUPER110
049869,000235: 7717 4700 2K = BIT11
049870,000236: 7717 4700 EBANK4 = BIT11
049871,000237: 7717 4677 PRIO4 = BIT12
049872,000238: 7717 4752 EBANK6 = PRIO3
049873,000239: 7717 4676 QUARTER = BIT13
049874,000240: 7717 4676 PRIO10 = BIT13
049875,000241: 7717 7632 OCT10001 = CCSL
049876,000242: 7717 4675 POS1/2 = HALF
049877,000243: 7717 4675 PRIO20 = BIT14
049878,000244: 7717 4675 HALF = BIT14
049879,000245: 7717 4371 PRIO30 = CHRPRIO
049880,000246: 7717 4371 BIT13-14 = PRIO30 # INTERPRETER USES IN PROCESSING STORECODE
049881,000247: 7717 6440 OCT30002 = TLOAD +1
049882,000248: 7717 7671 B12T14 = PRIO34
049883,000249: 7717 4674 NEGMAX = BIT15
049884,000250: 7717 4674 VLOADCOD = BIT15
049885,000251: 7717 6056 VLOAD* = OCT40001
049886,000252: 7717 4105 OCT60000 = RELTAB11
049887,000253: 7717 4364 BANKMASK = HI5
End of include-file FIXED-FIXED_CONSTANT_POOL.agc. Parent file is MAIN.agc