Source Code
|
These source-code files are part of a reconstructed copy of Luminary 163, the
first (unflown) release of the Apollo 14 Lunar Module (LM) Apollo Guidance
Computer (AGC) software.
The reconstruction began with reconstructed source code for Luminary 173. Changes
between revision 163 and 173 were backed out, as described by Luminary memos 157
and 158. 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 163 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.
|
058259,000002: ## Copyright: Public domain.
058260,000003: ## Filename: SERVICE_ROUTINES.agc
058261,000004: ## Purpose: A section of Luminary revision 163.
058262,000005: ## It is part of the reconstructed source code for the first
058263,000006: ## (unflown) release of the flight software for the Lunar
058264,000007: ## Module's (LM) Apollo Guidance Computer (AGC) for Apollo 14.
058265,000008: ## The code has been recreated from a reconstructed copy of
058266,000009: ## Luminary 173, as well as Luminary memos 157 amd 158.
058267,000010: ## It has been adapted such that the resulting bugger words
058268,000011: ## exactly match those specified for Luminary 163 in NASA
058269,000012: ## drawing 2021152N, which gives relatively high confidence
058270,000013: ## that the reconstruction is correct.
058271,000014: ## Reference: pp. 1362-1368
058272,000015: ## Assembler: yaYUL
058273,000016: ## Contact: Ron Burkey <info@sandroid.org>.
058274,000017: ## Website: www.ibiblio.org/apollo/index.html
058275,000018: ## Mod history: 2019-08-21 MAS Created from Luminary 173.
058276,000019:
|
|
Page 1362
|
058278,000021: 10,3545 BANK 10
058279,000022: 10,2000 SETLOC DISPLAYS
058280,000023: 10,2000 BANK
058281,000024: 10,3545 COUNT* $$/DSPLA
058282,000025:
058283,000026: 10,3545 00004 UPENT2 INHINT
058284,000027: 10,3546 75661 MASK OCT77770
058285,000028: 10,3547 54001 TS L
058286,000029: 10,3550 40100 CS FLAGWRD4
058287,000030: 10,3551 70001 MASK L
058288,000031: 10,3552 26100 ADS FLAGWRD4
058289,000032: 10,3553 00003 JOIN RELINT
058290,000033: 10,3554 16742 TCF Q+1
058291,000034:
058292,000035: 10,3555 00004 DOWNENT2 INHINT
058293,000036: 10,3556 75661 MASK OCT77770
058294,000037: 10,3557 40000 COM
058295,000038: 10,3560 70100 MASK FLAGWRD4
058296,000039: 10,3561 54100 TS FLAGWRD4
058297,000040: 10,3562 13553 TCF JOIN
058298,000041:
058299,000042: 10,3563 4757 OCT7 EQUALS SEVEN
058300,000043:
|
|
Page 1363
|
058302,000045: # UPFLAG AND DOWNFLAG ARE ENTIRELY GENERAL FLAG SETTING AND CLEARING SUBROUTINES. USING THEM, WHETHER OR
058303,000046: # NOT IN INTERRUPT, ONE MAY SET OR CLEAR ANY SINGLE, NAMED BIT IN ANY ERASABLE REGISTER, SUBJECT OF COURSE TO
058304,000047: # EBANK SETTING. A "NAMED" BIT, AS THE WORD IS USED HERE, IS ANY BIT WITH A NAME FORMALLY ASSIGNED BY THE YUL
058305,000048: # ASSEMBLER.
058306,000049:
058307,000050: # AT PRESENT THE ONLY NAMED BITS ARE THOSE IN THE FLAGWORDS. ASSEMBLER CHANGES WILL MAKE IT POSSIBLE TO
058308,000051: # NAME ANY BIT IN ERASABLE MEMORY.
058309,000052:
058310,000053: # CALLING SEQUENCES ARE AS FOLLOWS:-
058311,000054:
058312,000055: # TC UPFLAG TC DOWNFLAG
058313,000056: # ADRES NAME OF FLAG ADRES NAME OF FLAG
058314,000057:
058315,000058: # RETURN IS TO THE LOCATION FOLLOWING THE "ADRES" ABOUT .58 MS AFTER THE "TC".
058316,000059:
058317,000060: # UPON RETURN A CONTAINS THE CURRENT FLAGWRD SETTING.
058318,000061:
058319,000062: 5515 BLOCK 02
058320,000063: 4000 SETLOC FFTAG1
058321,000064: 4000 BANK
058322,000065: 5515 COUNT* $$/FLAG
058323,000066:
058324,000067: 5515 30002 UPFLAG CA Q
058325,000068: 5516 05533 TC DEBIT
058326,000069: 5517 40000 COM # +(15 - BIT)
058327,000070: 5520 00006 EXTEND
058328,000071: 5521 04001 ROR LCHAN # SET BIT
058329,000072: 5522 50061 COMFLAG INDEX ITEMP1
058330,000073: 5523 54074 TS FLAGWRD0
058331,000074: 5524 22063 LXCH ITEMP3
058332,000075: 5525 00003 RELINT
058333,000076: 5526 00001 TC L
058334,000077:
058335,000078:
058336,000079: 5527 30002 DOWNFLAG CA Q
058337,000080: 5530 05533 TC DEBIT
058338,000081: 5531 70001 MASK L # RESET BIT
058339,000082: 5532 15522 TCF COMFLAG
058340,000083:
058341,000084:
058342,000085: 5533 64753 DEBIT AD ONE # GET DE BITS
058343,000086: 5534 00004 INHINT
058344,000087: 5535 54063 TS ITEMP3
058345,000088: 5536 34762 CA LOW4 # DEC15
058346,000089: 5537 54061 TS ITEMP1
058347,000090: 5540 50063 INDEX ITEMP3
058348,000091: 5541 27777 CA 0 -1 # ADRES
058349,000092: 5542 54001 TS L
058350,000093: 5543 34755 CA ZERO
|
|
Page 1364
|
058352,000095: 5544 00006 EXTEND
058353,000096: 5545 10061 DV ITEMP1 # A = FLAGWRD, L = (15 - BIT)
058354,000097: 5546 52062 DXCH ITEMP1
058355,000098: 5547 50061 INDEX ITEMP1
058356,000099: 5550 30074 CA FLAGWRD0
058357,000100: 5551 54001 TS L # CURRENT STATE
058358,000101: 5552 50062 INDEX ITEMP2
058359,000102: 5553 44735 CS BIT15 # -(15 - BIT)
058360,000103: 5554 00002 TC Q
058361,000104:
|
|
Page 1365
|
058363,000106: # DELAYJOB- A GENERAL ROUTINE TO DELAY A JOB A SPECIFIC AMOUNT OF TIME BEFORE PICKING UP AGAIN.
058364,000107:
058365,000108: # ENTRANCE REQUIREMENTS...
058366,000109: # CAF DT DELAY JOB FOR DT CENTISECS
058367,000110: # TC BANKCALL
058368,000111: # CADR DELAYJOB
058369,000112:
058370,000113: 06,3772 BANK 06
058371,000114: 00,2000 SETLOC DLAYJOB
058372,000115: 00,2000 BANK
058373,000116:
058374,000117: # THIS MUST REMAIN IN BANK 0 *****************************************
058375,000118: 00,3735 COUNT* $$/DELAY
058376,000119: 00,3735 35000 2SECDELY CAF 2SECS
058377,000120: 00,3736 00004 DELAYJOB INHINT
058378,000121: 00,3737 54002 TS Q # STORE DELAY DT IN Q FOR DLY -1 IN
058379,000122:
058380,000123: 00,3740 34752 CAF DELAYNUM # WAITLIST
058381,000124: 00,3741 54070 DELLOOP TS RUPTREG1
058382,000125: 00,3742 50000 INDEX A
058383,000126: 00,3743 31323 CA DELAYLOC # IS THIS DELAYLOC AVAILABLE
058384,000127: 00,3744 00006 EXTEND
058385,000128: 00,3745 13753 BZF OK2DELAY # YES
058386,000129:
058387,000130: 00,3746 10070 CCS RUPTREG1 # NO, TRY NEXT DELAYLOC
058388,000131: 00,3747 13741 TCF DELLOOP
058389,000132:
058390,000133: 00,3750 52134 DXCH BUF2
058391,000134: 00,3751 05717 TC BAILOUT1 # NO AVAILABLE LOCS.
058392,000135: 00,3752 31104 OCT 31104
058393,000136:
058394,000137: 00,3753 33773 OK2DELAY CA TCSLEEP # SET WAITLIST IMMEDIATE RETURN
058395,000138: 00,3754 54061 TS WAITEXIT
058396,000139:
058397,000140: 00,3755 30004 CA FBANK
058398,000141: 00,3756 60070 AD RUPTREG1 # STORE BBANK FOR TASK CALL
058399,000142: 00,3757 54001 TS L
058400,000143:
058401,000144: 00,3760 33774 CAF WAKECAD # STORE CADR FOR TASK CALL
058402,000145: 00,3761 15222 TCF DLY2 -1 # DLY IS IN WAITLIST ROUTINE
058403,000146:
058404,000147: 00,3762 04645 TCGETCAD TC MAKECADR # GET CALLERS FCADR
058405,000148:
058406,000149: 00,3763 50070 INDEX RUPTREG1
058407,000150: 00,3764 55323 TS DELAYLOC # SAVE DELAY CADRS
058408,000151:
058409,000152: 00,3765 05133 TC JOBSLEEP
058410,000153:
058411,000154: 00,3766 34755 WAKER CAF ZERO
058412,000155: 00,3767 50006 INDEX BBANK
058413,000156:
|
|
Page 1366
|
058415,000158: 00,3770 57323 XCH DELAYLOC # MAKE DELAYLOC AVAILABLE
058416,000159: 00,3771 05137 TC JOBWAKE
058417,000160:
058418,000161: 00,3772 05272 TC TASKOVER
058419,000162:
058420,000163: 00,3773 03760 TCSLEEP GENADR TCGETCAD -2
058421,000164: 00,3774 03766 WAKECAD GENADR WAKER
058422,000165:
|
|
Page 1367
|
058424,000167: # GENTRAN, A BLOCK TRANSFER ROUTINE.
058425,000168:
058426,000169: # WRITTEN BY D. EYLES
058427,000170: # MOD 1 BY KERNAN UTILITYM REV 17 11/18/67
058428,000171:
058429,000172: # MOD 2 BY SCHULENBERG (REMOVE RELINT) SKIPPER REV 4 2/28/68
058430,000173:
058431,000174: # THIS ROUTINE IS USEFULL FOR TRANSFERING N CONSECUTIVE ERASABLE OR FIXED QUANTITIES TO SOME OTHER N
058432,000175: # CONSECUTIVE ERASABLE LOCATIONS. IF BOTH BLOCKS OF DATA ARE IN SWITCHABLE EBANKS, THEY MUST BE IN THE SAME ONE.
058433,000176:
058434,000177: # GENTRAN IS CALLABLE IN A JOB AS WELL AS A RUPT. THE CALLING SEQUENCE IS:
058435,000178:
058436,000179: # I CA N-1 # OF QUANTITIES MINUS ONE.
058437,000180: # I +1 TC GENTRAN IN FIXED-FIXED.
058438,000181: # I +2 ADRES L STARTING ADRES OF DATA TO BE MOVED.
058439,000182: # I +3 ADRES M STARTING ADRES OF DUPLICATION BLOCK.
058440,000183: # I +4 RETURNS HERE.
058441,000184:
058442,000185: # GENTRAN TAKES 25 MCT'S (300 MICROSECONDS) PER ITEM + 5 MCT'S (60 MICS) FOR ENTERING AND EXITING.
058443,000186:
058444,000187: # A, L AND ITEMP1 ARE NOT PRESERVED.
058445,000188:
058446,000189: 5555 BLOCK 02
058447,000190: 4000 SETLOC FFTAG4
058448,000191: 4000 BANK
058449,000192:
058450,000193: 5555 0061 EBANK= ITEMP1
058451,000194:
058452,000195: 5555 COUNT* $$/TRAN
058453,000196:
058454,000197: 5555 00004 GENTRAN INHINT
058455,000198: 5556 54061 TS ITEMP1 # SAVE N-1.
058456,000199: 5557 50002 INDEX Q # C(Q) = ADRES L.
058457,000200: 5560 60000 AD 0 # ADRES (L + N - 1).
058458,000201: 5561 50000 INDEX A
058459,000202: 5562 30000 CA 0 # C(ABOVE).
058460,000203: 5563 54001 TS L # SAVE DATA.
058461,000204: 5564 30061 CA ITEMP1
058462,000205: 5565 50002 INDEX Q
058463,000206: 5566 60001 AD 1 # ADRES (M + N - 1).
058464,000207: 5567 50000 INDEX A
058465,000208: 5570 22000 LXCH 0 # STUFF IT.
058466,000209: 5571 10061 CCS ITEMP1 # LOOP UNTIL N-1 = 0.
058467,000210: 5572 15556 TCF GENTRAN +1
058468,000211: 5573 16744 TCF Q+2 # RETURN TO CALLER.
058469,000212:
|
|
Page 1368
|
058471,000214: # B5OFF ZERO BIT 5 OF EXTVBACT, WHICH IS SET BY TESTXACT.
058472,000215:
058473,000216: # MAY BE USED AS NEEDED BY ANY EXTENDED VERB WHICH HAS DONE TESTXACT
058474,000217:
058475,000218: 5574 COUNT* $$/EXTVB
058476,000219:
058477,000220: 5574 44747 B5OFF CS BIT5
058478,000221: 5575 71043 MASK EXTVBACT
058479,000222: 5576 55043 TS EXTVBACT
058480,000223: 5577 05155 TC ENDOFJOB
End of include-file SERVICE_ROUTINES.agc. Parent file is MAIN.agc