Source Code
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These source-code files derive from a printout of Luminary 116 (the Apollo 12
Lunar Module guidance computer program), from the personal library of
original AGC developer Don Eyles, digitally photographed at archive.org,
financially sponsored by Ron Burkey, and transcribed to source code by a
team of volunteers. This colorized, syntax-highlighted form was created
by assembling that transcribed source code. Note that the full page images
are available on the
Virtual AGC project page at archive.org, while reduced-size images
are presented at the VirtualAGC project website. Report or fix any
transcription errors at
the Virtual AGC project code repository. Notations on the program listing read, in part: GAP: ASSEMBLE REVISION 116 OF AGC PROGRAM LUMINARY BY NASA 2021112-071 19:09 AUG. 11,1969Note that the date is the date of the printout, not the date of the program revision. |
057960,000002: ## Copyright: Public domain.
057961,000003: ## Filename: SERVICE_ROUTINES.agc
057962,000004: ## Purpose: A section of Luminary revision 116.
057963,000005: ## It is part of the source code for the Lunar Module's (LM)
057964,000006: ## Apollo Guidance Computer (AGC) for Apollo 12.
057965,000007: ## This file is intended to be a faithful transcription, except
057966,000008: ## that the code format has been changed to conform to the
057967,000009: ## requirements of the yaYUL assembler rather than the
057968,000010: ## original YUL assembler.
057969,000011: ## Reference: pp. 1364-1370
057970,000012: ## Assembler: yaYUL
057971,000013: ## Contact: Ron Burkey <info@sandroid.org>.
057972,000014: ## Website: www.ibiblio.org/apollo/index.html
057973,000015: ## Mod history: 2017-01-22 MAS Created from Luminary 99.
057974,000016: ## 2017-02-03 RRB Updated for Luminary 116.
057975,000017: ## 2017-03-09 HG Add missing statement
057976,000018: ## 2SECDELY CAF 2SECS
057977,000019: ## 2017-03-14 RSB Proofed comment text via 3-way diff vs
057978,000020: ## Luminary 99 and 131.
057979,000021: ## 2017-03-16 RSB Comment-text fixes identified in 5-way
057980,000022: ## side-by-side diff of Luminary 69/99/116/131/210.
057981,000023: ## 2017-03-19 HG Fix value OCT 1104 -> OCT 31104
057982,000024:
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Page 1364 |
057984,000026: 10,3545 BANK 10
057985,000027: 10,2000 SETLOC DISPLAYS
057986,000028: 10,2000 BANK
057987,000029: 10,3545 COUNT* $$/DSPLA
057988,000030:
057989,000031: 10,3545 00004 UPENT2 INHINT
057990,000032: 10,3546 75650 MASK OCT77770
057991,000033: 10,3547 54001 TS L
057992,000034: 10,3550 40100 CS FLAGWRD4
057993,000035: 10,3551 70001 MASK L
057994,000036: 10,3552 26100 ADS FLAGWRD4
057995,000037: 10,3553 00003 JOIN RELINT
057996,000038: 10,3554 16742 TCF Q+1
057997,000039:
057998,000040: 10,3555 00004 DOWNENT2 INHINT
057999,000041: 10,3556 75650 MASK OCT77770
058000,000042: 10,3557 40000 COM
058001,000043: 10,3560 70100 MASK FLAGWRD4
058002,000044: 10,3561 54100 TS FLAGWRD4
058003,000045: 10,3562 13553 TCF JOIN
058004,000046:
058005,000047: 10,3563 4757 OCT7 EQUALS SEVEN
058006,000048:
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Page 1365 |
058008,000050: # UPFLAG AND DOWNFLAG ARE ENTIRELY GENERAL FLAG SETTING AND CLEARING SUBROUTINES. USING THEM, WHETHER OR
058009,000051: # NOT IN INTERRUPT, ONE MAY SET OR CLEAR ANY SINGLE, NAMED BIT IN ANY ERASABLE REGISTER, SUBJECT OF COURSE TO
058010,000052: # EBANK SETTING. A "NAMED" BIT, AS THE WORD IS USED HERE, IS ANY BIT WITH A NAME FORMALLY ASSIGNED BY THE YUL
058011,000053: # ASSEMBLER.
058012,000054:
058013,000055: # AT PRESENT THE ONLY NAMED BITS ARE THOSE IN THE FLAGWORDS. ASSEMBLER CHANGES WILL MAKE IT POSSIBLE TO
058014,000056: # NAME ANY BIT IN ERASABLE MEMORY.
058015,000057:
058016,000058: # CALLING SEQUENCES ARE AS FOLLOWS:-
058017,000059: # TC UPFLAG TC DOWNFLAG
058018,000060: # ADRES NAME OF FLAG ADRES NAME OF FLAG
058019,000061:
058020,000062: # RETURN IS TO THE LOCATION FOLLOWING THE "ADRES" ABOUT .58 MS AFTER THE "TC".
058021,000063: # UPON RETURN A CONTAINS THE CURRENT FLAGWRD SETTING.
058022,000064:
058023,000065: 5504 BLOCK 02
058024,000066: 4000 SETLOC FFTAG1
058025,000067: 4000 BANK
058026,000068: 5504 COUNT* $$/FLAG
058027,000069:
058028,000070: 5504 30002 UPFLAG CA Q
058029,000071: 5505 05522 TC DEBIT
058030,000072: 5506 40000 COM # +(15 - BIT)
058031,000073: 5507 00006 EXTEND
058032,000074: 5510 04001 ROR LCHAN # SET BIT
058033,000075: 5511 50061 COMFLAG INDEX ITEMP1
058034,000076: 5512 54074 TS FLAGWRD0
058035,000077: 5513 22063 LXCH ITEMP3
058036,000078: 5514 00003 RELINT
058037,000079: 5515 00001 TC L
058038,000080:
058039,000081: 5516 30002 DOWNFLAG CA Q
058040,000082: 5517 05522 TC DEBIT
058041,000083: 5520 70001 MASK L # RESET BIT
058042,000084: 5521 15511 TCF COMFLAG
058043,000085:
058044,000086: 5522 64753 DEBIT AD ONE # GET DE BITS
058045,000087: 5523 00004 INHINT
058046,000088: 5524 54063 TS ITEMP3
058047,000089: 5525 34762 CA LOW4 # DEC15
058048,000090: 5526 54061 TS ITEMP1
058049,000091: 5527 50063 INDEX ITEMP3
058050,000092: 5530 27777 CA 0 -1 # ADRES
058051,000093: 5531 54001 TS L
058052,000094: 5532 34755 CA ZERO
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Page 1366 |
058054,000096: 5533 00006 EXTEND
058055,000097: 5534 10061 DV ITEMP1 # A = FLAGWRD, L = (15 - BIT)
058056,000098: 5535 52062 DXCH ITEMP1
058057,000099: 5536 50061 INDEX ITEMP1
058058,000100: 5537 30074 CA FLAGWRD0
058059,000101: 5540 54001 TS L # CURRENT STATE
058060,000102: 5541 50062 INDEX ITEMP2
058061,000103: 5542 44735 CS BIT15 # -(15 - BIT)
058062,000104: 5543 00002 TC Q
058063,000105:
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Page 1367 |
058065,000107: # DELAYJOB- A GENERAL ROUTINE TO DELAY A JOB A SPECIFIC AMOUNT OF TIME BEFORE PICKING UP AGAIN.
058066,000108:
058067,000109: # ENTRANCE REQUIREMENTS ...
058068,000110: # CAF DT DELAY JOB FOR DT CENTISECS
058069,000111: # TC BANKCALL
058070,000112: # CADR DELAYJOB
058071,000113:
058072,000114: 06,3772 BANK 06
058073,000115: 00,2000 SETLOC DLAYJOB
058074,000116: 00,2000 BANK
058075,000117:
058076,000118: # THIS MUST REMAIN IN BANK 0 *****************************************
058077,000119:
058078,000120: 00,3735 COUNT* $$/DELAY
058079,000121: 00,3735 35000 2SECDELY CAF 2SECS
058080,000122: 00,3736 00004 DELAYJOB INHINT
058081,000123: 00,3737 54002 TS Q # STORE DELAY DT IN Q FOR DLY -1 IN
058082,000124:
058083,000125: 00,3740 34752 CAF DELAYNUM # WAITLIST
058084,000126: 00,3741 54070 DELLOOP TS RUPTREG1
058085,000127: 00,3742 50000 INDEX A
058086,000128: 00,3743 31323 CA DELAYLOC # IS THIS DELAYLOC AVAILABLE
058087,000129: 00,3744 00006 EXTEND
058088,000130: 00,3745 13753 BZF OK2DELAY # YES
058089,000131:
058090,000132: 00,3746 10070 CCS RUPTREG1 # NO, TRY NEXT DELAYLOC
058091,000133: 00,3747 13741 TCF DELLOOP
058092,000134:
058093,000135: 00,3750 52134 DXCH BUF2
058094,000136: 00,3751 05706 TC BAILOUT1 # NO AVAILABLE LOCS.
058095,000137: 00,3752 31104 OCT 31104
058096,000138:
058097,000139: 00,3753 33773 OK2DELAY CA TCSLEEP # SET WAITLIST IMMEDIATE RETURN
058098,000140: 00,3754 54061 TS WAITEXIT
058099,000141:
058100,000142: 00,3755 30004 CA FBANK
058101,000143: 00,3756 60070 AD RUPTREG1 # STORE BBANK FOR TASK CALL
058102,000144: 00,3757 54001 TS L
058103,000145:
058104,000146: 00,3760 33774 CAF WAKECAD # STORE CADR FOR TASK CALL
058105,000147: 00,3761 15211 TCF DLY2 -1 # DLY IS IN WAITLIST ROUTINE
058106,000148:
058107,000149: 00,3762 04645 TCGETCAD TC MAKECADR # GET CALLERS FCADR
058108,000150:
058109,000151: 00,3763 50070 INDEX RUPTREG1
058110,000152: 00,3764 55323 TS DELAYLOC # SAVE DELAY CADRS
058111,000153:
058112,000154: 00,3765 05133 TC JOBSLEEP
058113,000155:
058114,000156: 00,3766 34755 WAKER CAF ZERO
058115,000157: 00,3767 50006 INDEX BBANK
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Page 1368 |
058117,000159: 00,3770 57323 XCH DELAYLOC # MAKE DELAYLOC AVAILABLE
058118,000160: 00,3771 05137 TC JOBWAKE
058119,000161:
058120,000162: 00,3772 05261 TC TASKOVER
058121,000163:
058122,000164: 00,3773 03760 TCSLEEP GENADR TCGETCAD -2
058123,000165: 00,3774 03766 WAKECAD GENADR WAKER
058124,000166:
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Page 1369 |
058126,000168: # GENTRAN, A BLOCK TRANSFER ROUTINE.
058127,000169:
058128,000170: # WRITTEN BY D. EYLES
058129,000171: # MOD 1 BY KERNAN UTILITYM REV 17 11/18/67
058130,000172:
058131,000173: # MOD 2 BY SCHULENBERG (REMOVE RELINT) SKIPPER REV 4 2/28/68
058132,000174:
058133,000175: # THIS ROUTINE IS USEFULL FOR TRANSFERING N CONSECUTIVE ERASABLE OR FIXED QUANTITIES TO SOME OTHER N
058134,000176: # CONSECUTIVE ERASABLE LOCATIONS. IF BOTH BLOCKS OF DATA ARE IN SWITCHABLE EBANKS, THEY MUST BE IN THE SAME ONE.
058135,000177:
058136,000178: # GENTRAN IS CALLABLE IN A JOB AS WELL AS A RUPT. THE CALLING SEQUENCE IS:
058137,000179: # I CA N-1 # OF QUANTITIES MINUS ONE.
058138,000180: # I +1 TC GENTRAN IN FIXED-FIXED.
058139,000181: # I +2 ADRES L STARTING ADRES OF DATA TO BE MOVED.
058140,000182: # I +3 ADRES M STARTING ADRES OF DUPLICATION BLOCK.
058141,000183: # I +4 RETURNS HERE.
058142,000184:
058143,000185: # GENTRAN TAKES 25 MCT'S (300 MICROSECONDS) PER ITEM + 5 MCT'S (60 MICS) FOR ENTERING AND EXITING.
058144,000186:
058145,000187: # A, L AND ITEMP1 ARE NOT PRESERVED.
058146,000188:
058147,000189: 5544 BLOCK 02
058148,000190: 4000 SETLOC FFTAG4
058149,000191: 4000 BANK
058150,000192:
058151,000193: 5544 0061 EBANK= ITEMP1
058152,000194:
058153,000195: 5544 COUNT* $$/TRAN
058154,000196:
058155,000197: 5544 00004 GENTRAN INHINT
058156,000198: 5545 54061 TS ITEMP1 # SAVE N-1.
058157,000199: 5546 50002 INDEX Q # C(Q) = ADRES L.
058158,000200: 5547 60000 AD 0 # ADRES (L + N - 1).
058159,000201: 5550 50000 INDEX A
058160,000202: 5551 30000 CA 0 # C(ABOVE).
058161,000203: 5552 54001 TS L # SAVE DATA.
058162,000204: 5553 30061 CA ITEMP1
058163,000205: 5554 50002 INDEX Q
058164,000206: 5555 60001 AD 1 # ADRES (M + N - 1).
058165,000207: 5556 50000 INDEX A
058166,000208: 5557 22000 LXCH 0 # STUFF IT.
058167,000209: 5560 10061 CCS ITEMP1 # LOOP UNTIL N-1 = 0.
058168,000210: 5561 15545 TCF GENTRAN +1
058169,000211: 5562 16744 TCF Q+2 # RETURN TO CALLER.
058170,000212:
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Page 1370 |
058172,000214: # B5OFF ZERO BIT 5 OF EXTVBACT, WHICH IS SET BY TESTXACT.
058173,000215:
058174,000216: # MAY BE USED AS NEEDED BY ANY EXTENDED VERB WHICH HAS DONE TESTXACT
058175,000217:
058176,000218: 5563 COUNT* $$/EXTVB
058177,000219:
058178,000220: 5563 44747 B5OFF CS BIT5
058179,000221: 5564 71043 MASK EXTVBACT
058180,000222: 5565 55043 TS EXTVBACT
058181,000223: 5566 05155 TC ENDOFJOB
058182,000224:
058183,000225:
058184,000226:
End of include-file SERVICE_ROUTINES.agc. Parent file is MAIN.agc