Source Code
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These source-code files are part of a reconstructed copy of Comanche 44, the
initial release (though not the final mission release) of the Apollo 10
Command Module (CM) Apollo Guidance Computer (AGC) software. Subsequent releases
were Comanche 45 and Comanche 45/2 (the flown release on Apollo 10). The reconstruction
is believed to be exactly accurate, but in the absence of an actual Apollo-era
listing of Comanche 44, some explanation of the reconstruction process is needed
to insure confidence in that accuracy.
The starting point was the source code of Comanche 51
(separately previously reconstructed from an Apollo-era listing of Comanche 55,
flown on Apollo 11). Comanche 51 source code was then modified
by undoing changes known to have been made between revisions 44 and 51. The now-reconstructed
Comanche 44 source code was verified by assembling it and checking that the assembled code had
the expected known-correct memory-bank checksums.
Note that page numbers in the reconstructed code match those on the Comanche 55 printout,
although the source code would likely have different page numbers in a contemporary
Comanche 44 listing.
Annotations that were not present in the contemporary source code have been added to the reconstructed
code to justify each change relative to Comanche 51. Here's a guide to the Apollo documentation referenced
in those annotations:
In most cases, only the titles (rather than the full texts) of PCRs are known. In addition to the
explanatory annotations, there is also
a step-by-step commentary about the reconstruction process.
Comments expected to have been present in 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.
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064083,000002: ## Copyright: Public domain.
064084,000003: ## Filename: UPDATE_PROGRAM.agc
064085,000004: ## Purpose: A section of Comanche revision 044.
064086,000005: ## It is part of the reconstructed source code for the
064087,000006: ## original release of the flight software for the Command
064088,000007: ## Module's (CM) Apollo Guidance Computer (AGC) for Apollo 10.
064089,000008: ## The code has been recreated from a copy of Comanche 055. It
064090,000009: ## has been adapted such that the resulting bugger words
064091,000010: ## exactly match those specified for Comanche 44 in NASA drawing
064092,000011: ## 2021153D, which gives relatively high confidence that the
064093,000012: ## reconstruction is correct.
064094,000013: ## Assembler: yaYUL
064095,000014: ## Contact: Ron Burkey <info@sandroid.org>.
064096,000015: ## Website: www.ibiblio.org/apollo/index.html
064097,000016: ## Mod history: 2020-12-03 MAS Created from Comanche 51.
064098,000017:
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Page 1497
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064100,000019: # PROGRAM NAME: P27
064101,000020: # WRITTEN BY: KILROY/ DE WOLF
064102,000021:
064103,000022: # MOD NO: 6
064104,000023: # MOD BY: KILROY
064105,000024: # DATE: 01DEC67
064106,000025:
064107,000026: # LOG SECTION: UPDATE PROGRAM.
064108,000027:
064109,000028: # FUNCT. DESCR: P27 (THE UPDATE PROGRAM) PROCESSES COMMANDS AND DATA
064110,000029: # INSERTIONS REQUESTED BY THE GROUND VIA UPLINK.
064111,000030: # THE P27 PROGRAM WILL ACCEPT UPDATES
064112,000031: # ONLY DURING P00 FOR THE LM, AND ONLY DURING P00,
064113,000032: # P02, AND FRESH START FOR THE CSM
064114,000033:
064115,000034: # CALLING SEQ: PROGRAM IS INITIATED BY UPLINK ENTRY OF VERBS 70, 71, 72 AND 73.
064116,000035:
064117,000036: # SUBROUTINES: TESTXACT, NEWMODEX, NEWMODEX +3, GOXDSPF, BANKCALL, FINDVAC, INTPRET, INTSTALL, TPAGREE,
064118,000037: # INTWAKEU, ENDEXT, POSTJUMP, FALTON, NEWPHASE, PHASCHNG
064119,000038:
064120,000039: # NORMAL EXIT: TC ENDEXT
064121,000040:
064122,000041: # ALARM/ABORT: TC FALTON FOLLOWED BY TC ENDEXT
064123,000042:
064124,000043: # RESTARTS: P27 IS RESTART PROTECTED IN TWO WAYS ...
064125,000044: # 1. PRIOR TO VERIFLAG INVERSION (WHICH IS CAUSED BY THE GROUND/ASTRONAUT'S VERIFICATION OF UPDATE
064126,000045: # DATA BY SENDING A V33E WHEN V21N02 IS FLASHING)---
064127,000046: # NO PROTECTION EXCEPT PRE-P27 MODE IS RESTORED, COAST + ALIGN DOWNLIST IS SELECTED AND UPLINK
064128,000047: # ACTIVITY LIGHT IS TURNED OFF. (JUST AS IF A V34E WAS SENT DURING P27 DATA LOADS).
064129,000048: # V70,V71,V72 OR V73 WILL HAVE TO BE COMPLETELY RESENT BY USER.
064130,000049: # 2. AFTER VERIFLAG INVERSION (WHEN UPDATE OF THE SPECIFIED ERASABLES IS BEING PERFORMED)---
064131,000050: # PROTECTED AGAINST RESTARTS.
064132,000051:
064133,000052: # DEBRIS: UPBUFF (20D) TEMP STORAGE FOR ADDRESSES AND CONTENTS.
064134,000053: # UPVERB (1) VERB NUMBER MINUS 70D (E.G. FOR V72, UPVERB = 72D - 70D = 2)
064135,000054: # UPOLDMOD(1) FOR MAJOR MODE INTERRUPTED BY P27.
064136,000055: # COMPNUMB(1) TOTAL NUMBER OF COMPONENTS TO BE TRANSMITTED.
064137,000056: # UPCOUNT (1) ACTUAL NUMBER OF COMPONENTS RECEIVED.
064138,000057: # UPTEMP (1) SCRATCH, BUT USUALLY CONTAINS COMPONENT NUMBER TO BE CHANGED DURING VERIFY CYCLE
064139,000058:
064140,000059: # INPUT:
064141,000060:
064142,000061: # ENTRY: DESCRIPTION
064143,000062: # V70EXXXXXEXXXXXE (LIFTOFF TIME INCREMENT) DOUBLE PRECISION OCTAL TIME INCREMENT, XXXXX XXXXX,
064144,000063: # IS ADDED TO TEPHEM, SUBTRACTED FROM AGC CLOCK(TIME2,TIME1), SUBTRACTED FROM CSM STATE
064145,000064: # VECTOR TIME(TETCSM) AND SUBTRACTED FROM LEM STATE VECTOR TIME(TETLEM).
064146,000065: # THE DP OCTAL TIME INCREMENT IS SCALED AT 2(28).
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Page 1498
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064148,000067: # V71EIIEAAAAE (CONTIGUOUS BLOCK UPDATE) II-2 OCTAL COMPONENTS, XXXXX,
064149,000068: # XXXXXE ARE LOADED INTO ERASABLE STARTING AT ECADR, AAAA.
064150,000069: # XXXXXE IT IS .GE. 3 .AND. .LE. 20D.,
064151,000070: # AND (AAAA + II -3) DOES NOT PRODUCE AN ADDRESS IN THE
064152,000071: # 9 NEXT BANK
064153,000072: # . SCALING IS SAME AS INTERNAL REGISTERS.
064154,000073: # V72EIIE (SCATTER UPDATE) (II-1)/2 OCTAL COMPONENTS, XXXXX, ARE
064155,000074: # AAAAEXXXXXE LOADED INTO ERASABLE LOCATIONS, AAAA.
064156,000075: # AAAAEXXXXXE II IS .GE. 3 .AND. .LE. 19D, AND MUST BE ODD.
064157,000076: # . SCALING IS SAME AS INTERNAL REGISTERS.
064158,000077:
064159,000078: # V73EXXXXXEXXXXXE (OCTAL CLOCK INCREMENT) DOUBLE PRECISION OCTAL TIME
064160,000079: # INCREMENT XXXXX XXXXX, IS ADDED TO THE AGC CLOCK, IN
064161,000080: # CENTISECONDS SCALED AT (2)28.
064162,000081: # THIS LOAD IS THE OCTAL EQUIVALENT OF V55.
064163,000082:
064164,000083: # OUTPUT: IN ADDITION TO THE ABOVE REGISTER LOADS, ALL UPDATES
064165,000084: # COMPLEMENT BIT3 OF FLAGWORD7.
064166,000085:
064167,000086: # ADDITIONAL NOTES: VERB 71, JUST DEFINED ABOVE WILL BE USED TO PERFORM BUT NOT LIMITED TO THE FOLLOWING UPDATES --
064168,000087: # 1. CSM/LM STATE VECTOR UPDATE
064169,000088: # 2. REFSMMAT UPDATE
064170,000089:
064171,000090: # THE FOLLOWING COMMENTS DELINEATE EACH SPECIAL UPDATE ----
064172,000091:
064173,000092: # 1. CSM/LM STATE VECTOR UPDATE (ALL DATA ENTRIES IN OCTAL)
064174,000093: # ENTRIES: DATA DEFINITION: SCALE FACTORS:
064175,000094: # V71E CONTIGUOUS BLOCK UPDATE VERB
064176,000095: # 21E NUMBER OF COMPONENTS FOR STATE VECTOR UPDATE
064177,000096: # AAAAE ECADR OF 'UPSVFLAG'
064178,000097: # XXXXXE STATE VECTOR IDENTIFIER: 00001 FOR CSM, 77776 FOR LEM - EARTH SPHERE OF INFLUENCE SCALING
064179,000098: # 00002 FOR CSM, 77775 FOR LEM - LUNAR SPHERE OF INFLUENCE SCALING
064180,000099: # XXXXXEXXXXXE X POSITION
064181,000100: # XXXXXEXXXXXE Y POSITION
064182,000101: # XXXXXEXXXXXE Z POSITION
064183,000102: # XXXXXEXXXXXE X VELOCITY
064184,000103: # XXXXXEXXXXXE Y VELOCITY
064185,000104: # XXXXXEXXXXXE Z VELOCITY
064186,000105: # XXXXXEXXXXXE TIME FROM AGC CLOCK ZERO
064187,000106: # V33E VERB 33 TO SIGNAL THAT THE STATE VECTOR IS READY TO BE STORED.
064188,000107:
064189,000108: # 2. REFSMMAT (ALL DATA ENTRIES IN OCTAL)
064190,000109: # ENTRIES: DATA DEFINITIONS: SCALE FACTORS:
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Page 1499
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064192,000111: # V71E CONTIGUOUS BLOCK UPDATE VERB
064193,000112: # 24E NUMBER OF COMPONENTS FOR REFSMMAT UPDATE
064194,000113: # AAAAE ECADR OF 'REFSMMAT'
064195,000114: # XXXXXEXXXXXE ROW 1 COLUMN 1 2(-1)
064196,000115: # XXXXXEXXXXXE ROW 1 COLUMN 2 2(-1)
064197,000116: # XXXXXEXXXXXE ROW 1 COLUMN 3 2(-1)
064198,000117: # XXXXXEXXXXXE ROW 2 COLUMN 1 2(-1)
064199,000118: # XXXXXEXXXXXE ROW 2 COLUMN 2 2(-1)
064200,000119: # XXXXXEXXXXXE ROW 2 COLUMN 3 2(-1)
064201,000120: # XXXXXEXXXXXE ROW 3 COLUMN 1 2(-1)
064202,000121: # XXXXXEXXXXXE ROW 3 COLUMN 2 2(-1)
064203,000122: # XXXXXEXXXXXE ROW 3 COLUMN 3 2(-1)
064204,000123: # V33E VERB 33 TO SIGNAL THAT REFSMMAT IS READY TO BE STORED.
064205,000124:
064206,000125: 07,3777 BANK 07
064207,000126: 43,2000 SETLOC EXTVERBS
064208,000127: 43,2000 BANK
064209,000128:
064210,000129: 43,3726 E3,1706 EBANK= TEPHEM
064211,000130:
064212,000131: 43,3726 COUNT* $$/P27
064213,000132: 43,3726 35021 V70UPDAT CAF UP70 # COMES HERE ON V70E
064214,000133: 43,3727 13735 TCF V73UPDAT +1
064215,000134:
064216,000135: 43,3730 35017 V71UPDAT CAF UP71 # COMES HERE ON V71E
064217,000136: 43,3731 13735 TCF V73UPDAT +1
064218,000137:
064219,000138: 43,3732 35016 V72UPDAT CAF UP72 # COMES HERE ON V72E
064220,000139: 43,3733 13735 TCF V73UPDAT +1
064221,000140:
064222,000141: 43,3734 36214 V73UPDAT CAF UP73 # COMES HERE ON V73E
064223,000142:
064224,000143: 43,3735 54331 +1 TS UPVERBSV # SAVE UPVERB UNTIL IT'S OK TO ENTER P27
064225,000144:
064226,000145: 43,3736 02076 TC TESTXACT # GRAB DISPLAY IF AVAILABLE, OTHERWISE
064227,000146: # TURN *OPERATOR ERROR* ON AND TERMINATE JOB
064228,000147:
064229,000148: 43,3737 31011 CA MODREG # CHECK IF UPDATE ALLOWED
064230,000149: 43,3740 00006 EXTEND # FIRST CHECK FOR MODREG = +0, -0
064231,000150: 43,3741 13743 BZF +2 # (+0 = P00, -0 = FRESHSTART)
064232,000151: 43,3742 03753 TC CKMDMORE # NOW CHECK FOR PROGRAM WHICH CAN BE
064233,000152: # INTERRUPTED BY P27.
064234,000153:
064235,000154: 43,3743 31011 CAE MODREG # UPDATE ALLOWED.
064236,000155: 43,3744 54301 TS UPOLDMOD # SAVE CURRENT MAJOR MODE
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Page 1500
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064238,000157: 43,3745 30331 CAE UPVERBSV # SET UPVERB TO INDICATE TO P27
064239,000158: 43,3746 54302 TS UPVERB # WHICH EXTENDED VERB CALLED IT.
064240,000159:
064241,000160: 43,3747 35017 CAF ONE
064242,000161: 43,3750 54303 TS UPCOUNT # INITIALIZE UPCOUNT TO 1
064243,000162:
064244,000163: 43,3751 04701 TC POSTJUMP # LEAVE EXTENDED VERB BANK AND
064245,000164: 43,3752 57373 CADR UPPART2 # GO TO UPDATE PROGRAM (P27) BANK.
064246,000165:
064247,000166: 43,3753 40101 CKMDMORE CS FLAGWRD5
064248,000167: 43,3754 75010 MASK BIT8 # CHECK IF COMPUTER IS LGC
064249,000168: 43,3755 10000 CCS A # IS COMPUTER LGC OR AGC
064250,000169: 43,3756 13764 UPERLEM TCF UPERROR # ERROR- IT'S THE LEM + MODE IS NOT POO.
064251,000170: 43,3757 45016 CS TWO
064252,000171: 43,3760 71011 MASK MODREG
064253,000172: 43,3761 10000 CCS A
064254,000173: 43,3762 13764 UPERCMC TCF UPERROR # ERROR- IT'S THE CMC AND MODE IS NOT
064255,000174: # P00 OR P02.
064256,000175: 43,3763 00002 TC Q # ALLOW UPDATE TO PROCEED
064257,000176:
064258,000177: 43,3764 04701 UPERROR TC POSTJUMP # TURN ON 'OPERATOR ERROR' LIGHT
064259,000178: 43,3765 57754 CADR UPERROUT +2 # GO TO COMMON UPDATE PROGRAM EXIT
064260,000179:
064261,000180: 43,3766 30,2000 SBANK= LOWSUPER
064262,000181: 43,3766 5021 UP70 EQUALS ZERO
064263,000182: 43,3766 5017 UP71 EQUALS ONE
064264,000183: 43,3766 5016 UP72 EQUALS TWO
064265,000184: 43,3766 6214 UP73 EQUALS THREE
064266,000185:
064267,000186: 04,3754 BANK 04
064268,000187: 27,2000 SETLOC UPDATE2
064269,000188: 27,2000 BANK
064270,000189:
064271,000190: 27,3373 COUNT* $$/P27
064272,000191:
064273,000192: 27,3373 UPPART2 EQUALS # UPDATE PROGRAM - PART 2
064274,000193:
064275,000194: 27,3373 05412 TC PHASCHNG # SET RESTART GROUP 6 TO RESTORE OLD MODE
064276,000195: 27,3374 07026 OCT 07026 # AND DOWNLIST AND EXIT IF RESTART OCCURS.
064277,000196: 27,3375 30000 OCT 30000 # PRIORITY SAME AS CHRPRIO
064278,000197: 27,3376 0304 EBANK= UPBUFF
064279,000198: 27,3376 03704 56060 2CADR UPOUT +1
064280,000199:
064281,000200: 27,3400 35017 CAF ONE
064282,000201: 27,3401 54332 TS DNLSTCOD # DOWNLIST
064283,000202:
064284,000203: 27,3402 05354 TC NEWMODEX # SET MAJOR MODE = 27
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Page 1501
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064286,000205: 27,3403 00033 DEC 27 B-14
064287,000206:
064288,000207: 27,3404 50302 INDEX UPVERB # BRANCH DEPENDING ON WHETHER THE UPDATE
064289,000208: 27,3405 13406 TCF +1 # VERB REQUIRES A FIXED OR VARIABLE NUMBER
064290,000209: 27,3406 13411 TCF +3 # V70 FIXED. (OF COMPONENTS.
064291,000210: 27,3407 13414 TCF OHWELL1 # V71 VARIABLE - GO GET NO. OF COMPONENTS
064292,000211: 27,3410 13414 TCF OHWELL1 # V72 VARIABLE - GO GET NO. OF COMPONENTS
064293,000212: 27,3411 35016 CA TWO # V73 (AND V70) FIXED
064294,000213: 27,3412 54300 TS COMPNUMB # SET NUMBER OF COMPONENTS TO 2.
064295,000214: 27,3413 13437 TCF OHWELL2 # GO GET THE TWO UPDATE COMPONENTS
064296,000215:
064297,000216: 27,3414 33507 OHWELL1 CAF ADUPBUFF # * REQUEST USER TO SEND NUMBER *
064298,000217: 27,3415 54156 TS MPAC +2 # * OF COMPONENTS PARAMETER(II). *
064299,000218: 27,3416 33510 +2 CAF UPLOADNV # (CK4V32 RETURNS HERE IF V32 ENCOUNTERED)
064300,000219: 27,3417 04662 TC BANKCALL # DISPLAY A FLASHING V21N01
064301,000220: 27,3420 20561 CADR GOXDSPF # TO REQUEST II.
064302,000221: 27,3421 13704 TCF UPOUT4 # V34 TERMINATE UPDATE (P27) RETURN
064303,000222: 27,3422 13416 TCF OHWELL1 +2
064304,000223: 27,3423 03500 TC CK4V32 # DATA OR V32 RETURN
064305,000224: 27,3424 45016 CS BIT2
064306,000225: 27,3425 60304 AD UPBUFF # IS II (NUMBER OF COMPONENTS PARAMETER)
064307,000226: 27,3426 00006 EXTEND # .GE. 3 AND .LE. 20D.
064308,000227: 27,3427 63416 BZMF OHWELL1 +2
064309,000228: 27,3430 40304 CS UPBUFF
064310,000229: 27,3431 64376 AD UP21
064311,000230: 27,3432 00006 EXTEND
064312,000231: 27,3433 63416 BZMF OHWELL1 +2
064313,000232: 27,3434 30304 CAE UPBUFF
064314,000233: 27,3435 54300 TS COMPNUMB # SAVE II IN COMPNUMB
064315,000234:
064316,000235: # UPBUFF LOADING SEQUENCE
064317,000236:
064318,000237: 27,3436 24303 INCR UPCOUNT # INCREMENT COUNT OF COMPONENTS RECEIVED.
064319,000238: 27,3437 33654 OHWELL2 CAF ADUPBFM1 # CALCULATE LOCATION (ECADR) IN UPBUFF
064320,000239: 27,3440 60303 AD UPCOUNT # WHERE NEXT COMPONENT SHOULD BE STORED.
064321,000240: 27,3441 54156 +2 TS MPAC +2 # PLACE ECADR INTO R3.
064322,000241: 27,3442 33510 +3 CAF UPLOADNV # (CK4V32 RETURNS HERE IF V32 ENCOUNTERED)
064323,000242: 27,3443 04662 TC BANKCALL # DISPLAY A FLASHING V21N01
064324,000243: 27,3444 20561 CADR GOXDSPF # TO REQUEST DATA.
064325,000244: 27,3445 13704 TCF UPOUT4 # V34 TERMINATE UPDATE (P27) RETURN.
064326,000245: 27,3446 13442 TCF OHWELL2 +3 # V33 PROCEED RETURN
064327,000246: 27,3447 03500 TC CK4V32 # DATA OR V32 RETURN
064328,000247: 27,3450 40303 CS UPCOUNT # HAVE WE FINISHED RECEIVING ALL
064329,000248: 27,3451 60300 AD COMPNUMB # THE DATA WE EXPECTED.
064330,000249: 27,3452 00006 EXTEND
064331,000250: 27,3453 63455 BZMF UPVERIFY # YES- GO TO VERIFICATION SEQUENCE
064332,000251: 27,3454 13436 TCF OHWELL2 -1 # NO- REQUEST ADDITIONAL DATA.
064333,000252:
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Page 1502
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064335,000254: # VERIFY SEQUENCE
064336,000255: 27,3455 33506 UPVERIFY CAF ADUPTEMP # PLACE ECADR WHERE COMPONENT NO. INDEX
064337,000256: 27,3456 54156 TS MPAC +2 # IS TO BE STORED INTO R3.
064338,000257: 27,3457 33511 CAF UPVRFYNV # (CK4V32 RETURNS HERE IF V32 ENCOUNTERED)
064339,000258: 27,3460 04662 TC BANKCALL # DISPLAY A FLASHING V21N02 TO REQUEST
064340,000259: 27,3461 20561 CADR GOXDSPF # DATA CORRECTION OR VERIFICATION.
064341,000260: 27,3462 13704 TCF UPOUT4 # V34 TERMINATE UPDATE (P27) RETURN
064342,000261: 27,3463 13512 TCF UPSTORE # V33 DATA SENT IS GOOD. GO STORE IT.
064343,000262: 27,3464 03500 TC CK4V32 # COMPONENT NO. INDEX OR V32 RETURN
064344,000263: 27,3465 30330 CA UPTEMP # DOES THE COMPONENT NO. INDEX JUST SENT
064345,000264: 27,3466 00006 EXTEND # SPECIFY A LEGAL COMPONENT NUMBER?
064346,000265: 27,3467 63455 BZMF UPVERIFY # NO, IT IS NOT POSITIVE NONZERO
064347,000266: 27,3470 40330 CS UPTEMP
064348,000267: 27,3471 60300 AD COMPNUMB
064349,000268: 27,3472 65017 AD BIT1
064350,000269: 27,3473 00006 EXTEND
064351,000270: 27,3474 63455 BZMF UPVERIFY # NO
064352,000271: 27,3475 33654 CAF ADUPBFM1 # YES- BASED ON THE COMPONENT NO. INDEX
064353,000272: 27,3476 60330 AD UPTEMP # CALCULATE THE ECADR OF LOCATION IN
064354,000273: 27,3477 13441 TCF OHWELL2 +2 # UPBUFF WHICH USER WANTS TO CHANGE.
064355,000274:
064356,000275: 27,3500 27,3704 UPOUT4 EQUALS UPOUT +1 # COMES HERE ON V34 TO TERMINATE UPDATE
064357,000276:
064358,000277: # CHECK FOR VERB 32 SEQUENCE
064359,000278:
064360,000279: 27,3500 40154 CK4V32 CS MPAC # ON DATA RETURN FROM 'GOXDSPF'
064361,000280: 27,3501 75012 MASK BIT6 # ON DATA RETURN FROM "GOXDSP"& THE CON-
064362,000281: 27,3502 10000 CCS A # TENTS OF MPAC = VERB. SO TEST FOR V32.
064363,000282: 27,3503 00002 TC Q # IT'S NOT A V32, IT'S DATA. PROCEED.
064364,000283: 27,3504 50002 INDEX Q
064365,000284: 27,3505 77771 TC 0 -6 # V32 ENCOUNTERED - GO BACK AND GET DATA
064366,000285:
064367,000286: 27,3506 00330 ADUPTEMP ADRES UPTEMP # ADDRESS OF TEMP STORAGE FOR CORRECTIONS
064368,000287: 27,3507 00304 ADUPBUFF ADRES UPBUFF # ADDRESS OF UPDATE DATA STORAGE BUFFER
064369,000288: 27,3510 05201 UPLOADNV VN 2101 # VERB 21 NOUN 01
064370,000289: 27,3511 05202 UPVRFYNV VN 2102 # VERB 21 NOUN 02
064371,000290: 27,3512 4376 UP21 = MD1 # DEC 21 = MAX NO OF COMPONENTS +1
064372,000291: 27,3512 5022 UPDTPHAS EQUALS FIVE
064373,000292:
064374,000293: # PRE-STORE AND FAN TO APPROPRIATE BRANCH SEQUENCE
064375,000294:
064376,000295: 27,3512 UPSTORE EQUALS # GROUND HAS VERIFIED UPDATE. STORE DATA.
064377,000296:
064378,000297: 27,3512 00004 INHINT
064379,000298:
064380,000299: 27,3513 30103 CAE FLAGWRD7 # INVERT VERIFLAG (BIT 3 OF FLAGWRD7) TO
064381,000300: 27,3514 56001 XCH L # INDICATE TO THE GROUND (VIA DOWNLINK)
064382,000301: 27,3515 35015 CAF BIT3 # THAT THE V33 (WHICH THE GROUND SENT TO
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Page 1503
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064384,000303: 27,3516 00006 EXTEND # VERIFY THE UPDATE) HAS BEEN SUCCESSFULLY
064385,000304: 27,3517 06001 RXOR LCHAN # RECEIVED BY THE UPDATE PROGRAM
064386,000305: 27,3520 54103 TS FLAGWRD7
064387,000306:
064388,000307: 27,3521 05412 TC PHASCHNG # SET RESTART GROUP 6 TO REDO THE UPDATE
064389,000308: 27,3522 04026 OCT 04026 # DATA STORE IF A RESTART OCCURS.
064390,000309: 27,3523 00004 INHINT # (BECAUSE PHASCHNG DID A RELINT)
064391,000310:
064392,000311: 27,3524 45016 CS TWO # GO TO UPFNDVAC IF INSTALL IS REQUIRED,
064393,000312: 27,3525 60302 AD UPVERB # THAT IS, IF IT'S A V70 - V72.
064394,000313: 27,3526 00006 EXTEND # GO TO UPEND73 IF IT'S A V73.
064395,000314: 27,3527 63536 BZMF UPFNDVAC
064396,000315:
064397,000316: # VERB 73 BRANCH
064398,000317:
064399,000318: 27,3530 00006 UPEND73 EXTEND # V73-PERFORM DP OCTAL AGC CLOCK INCREMENT
064400,000319: 27,3531 30305 DCA UPBUFF
064401,000320: 27,3532 52315 DXCH UPBUFF +8D
064402,000321: 27,3533 03561 TC TIMEDIDL
064403,000322: 27,3534 04400 TC FALTON # ERROR- TURN ON *OPERATOR ERROR* LIGHT
064404,000323: 27,3535 03704 TC UPOUT +1 # GO TO COMMON UPDATE PROGRAM EXIT
064405,000324:
064406,000325: 27,3536 34371 UPFNDVAC CAF CHRPRIO # (USE EXTENDED VERB PRIORITY)
064407,000326: 27,3537 05147 TC FINDVAC # GET VAC AREA FOR 'CALL INTSTALL'
064408,000327: 27,3540 E3,1706 EBANK= TEPHEM
064409,000328: 27,3540 03543 56063 2CADR UPJOB # (NOTE: THIS WILL ALSO SET EBANK FOR
064410,000329: 27,3542 05217 TC ENDOFJOB # 'TEPHEM' UPDATE BY V70)
064411,000330:
064412,000331: 27,3543 06006 UPJOB TC INTPRET # THIS COULD BE A STATE VECTOR UPDATE -- SO
064413,000332: 27,3544 77624 CALL # WAIT (PUT JOB TO SLEEP) IF ORBIT INT(OI)
064414,000333: 27,3545 27442 INTSTALL # IS IN PROGRESS -- OR -- GRAB OI AND RETURN
064415,000334: # TO UPWAKE IF OI IS NOT IN PROGRESS.
064416,000335:
064417,000336: 27,3546 77776 UPWAKE EXIT
064418,000337:
064419,000338: 27,3547 05412 TC PHASCHNG # RESTART PROTECT (GROUP 6)
064420,000339: 27,3550 04026 OCT 04026
064421,000340:
064422,000341: 27,3551 05546 TC UPFLAG # SET INTEGRATION RESTART BIT
064423,000342: 27,3552 00236 ADRES REINTFLG
064424,000343: 27,3553 00004 INHINT
064425,000344: 27,3554 UPPART3 EQUALS
064426,000345:
064427,000346: 27,3554 50302 INDEX UPVERB # BRANCH TO THE APPROPRIATE UPDATE VERB
064428,000347: 27,3555 13556 TCF +1 # ROUTINE TO ACTUALLY PERFORM THE UPDATE
064429,000348: 27,3556 13715 TCF UPEND70 # V70
064430,000349: 27,3557 13624 TCF UPEND71 # V71
064431,000350: 27,3560 13656 TCF UPEND72 # V72
064432,000351:
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064434,000353: # ROUTINE TO INCREMENT CLOCK (TIME2,TIME1) WITH CONTENTS OF DP WORD AT UPBUFF.
064435,000354: 27,3561 00006 TIMEDIDL EXTEND
064436,000355: 27,3562 22330 QXCH UPTEMP # SAVE Q FOR RETURN
064437,000356: 27,3563 35021 CAF ZERO # ZERO AND SAVE TIME2,TIME1
064438,000357: 27,3564 22007 ZL
064439,000358: 27,3565 52025 DXCH TIME2
064440,000359: 27,3566 52327 DXCH UPBUFF +18D # STORE IN CASE OF OVERFLOW
064441,000360:
064442,000361: 27,3567 35022 CAF UPDTPHAS # DO
064443,000362: 27,3570 54001 TS L # A
064444,000363: 27,3571 40000 COM # QUICK
064445,000364: 27,3572 52765 DXCH -PHASE6 # PHASCHNG
064446,000365:
064447,000366: 27,3573 00004 TIMEDIDR INHINT
064448,000367: 27,3574 35021 CAF ZERO
064449,000368: 27,3575 22007 ZL # PICK UP INCREMENTER(AND ZERO
064450,000369: 27,3576 54156 TS MPAC +2 # IT IN CASE OF RESTARTS) AND
064451,000370: 27,3577 52315 DXCH UPBUFF +8D # STORE IT
064452,000371: 27,3600 52155 DXCH MPAC # INTO MPAC FOR TPAGREE.
064453,000372:
064454,000373: 27,3601 00006 EXTEND
064455,000374: 27,3602 30327 DCA UPBUFF +18D
064456,000375: 27,3603 20155 DAS MPAC # FORM SUM IN MPAC
064457,000376: 27,3604 00006 EXTEND
064458,000377: 27,3605 13614 BZF DELTAOK # TEST FOR OVERFLOW
064459,000378: 27,3606 35021 CAF ZERO
064460,000379: 27,3607 52327 DXCH UPBUFF +18D # OVERFLOW, RESTORE OLD VALUE OF CLOCK
064461,000380: 27,3610 20025 DAS TIME2 # AND TURN ON OPERATOR ERROR
064462,000381:
064463,000382: 27,3611 05412 TC PHASCHNG # RESTART PROTECT (GROUP 6)
064464,000383: 27,3612 04026 OCT 04026
064465,000384:
064466,000385: 27,3613 00330 TC UPTEMP # GO TO ERROR EXIT
064467,000386:
064468,000387: 27,3614 07226 DELTAOK TC TPAGREE # FORCE SIGN AGREEMENT
064469,000388: 27,3615 52155 DXCH MPAC
064470,000389: 27,3616 20025 DAS TIME2 # INCREMENT TIME2,TIME1
064471,000390:
064472,000391: 27,3617 05412 TC PHASCHNG # RESTART PROTECT (GROUP 6)
064473,000392: 27,3620 04026 OCT 04026
064474,000393:
064475,000394: 27,3621 00004 INHINT
064476,000395: 27,3622 50330 INDEX UPTEMP # (CODED THIS WAY FOR RESTART PROTECTION)
064477,000396: 27,3623 00001 TC 1 # NORMAL RETURN
064478,000397:
064479,000398: # VERB 71 BRANCH
064480,000399:
064481,000400: 27,3624 30305 UPEND71 CAE UPBUFF +1 # SET EBANK
064482,000401: 27,3625 54003 TS EBANK # AND
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064484,000403: 27,3626 74373 MASK LOW8 # CALCULATE
064485,000404: 27,3627 54330 TS UPTEMP # S-REG VALUE OF RECEIVING AREA
064486,000405: 27,3630 67714 AD NEG3 # IN THE PROCESS OF
064487,000406: 27,3631 60300 AD COMPNUMB # PERFORMING
064488,000407: 27,3632 00006 EXTEND # THIS UPDATE
064489,000408: 27,3633 13641 BZF STORLP71 # WILL WE
064490,000409: 27,3634 75007 MASK BIT9 # OVERFLOW
064491,000410: 27,3635 10000 CCS A # INTO THE NEXT EBANK....
064492,000411: 27,3636 13752 TCF UPERROUT # YES
064493,000412:
064494,000413: 27,3637 37714 CA NEG3 # NO- CALCULATE NUMBER OF
064495,000414: 27,3640 60300 AD COMPNUMB # WORDS TO BE STORED MINUS ONE
064496,000415: 27,3641 54154 STORLP71 TS MPAC # SAVE NO. OF WORDS REMAINING MINUS ONE
064497,000416: 27,3642 50000 INDEX A # TAKE NEXT UPDATE WORD FROM
064498,000417: 27,3643 30306 CA UPBUFF +2 # UPBUFF AND
064499,000418: 27,3644 54001 TS L # SAVE IT IN L
064500,000419: 27,3645 30154 CA MPAC # CALCULATE NEXT
064501,000420: 27,3646 60330 AD UPTEMP # RECEIVING ADDRESS
064502,000421: 27,3647 50000 INDEX A
064503,000422: 27,3650 E3,1400 EBANK= 1400
064504,000423: 27,3650 23400 LXCH 1400 # UPDATE THE REGISTER BY CONTENTS OF L
064505,000424: 27,3651 E3,1706 EBANK= TEPHEM
064506,000425: 27,3651 10154 CCS MPAC # ARE THERE ANY WORDS LEFT TO BE STORED
064507,000426: 27,3652 13641 TCF STORLP71 # YES
064508,000427: 27,3653 13703 TCF UPOUT # NO- THEN EXIT UPDATE PROGRAM
064509,000428: 27,3654 00303 ADUPBFM1 ADRES UPBUFF -1 # SAME AS ADUPBUFF BUT LESS 1 (DON'T MOVE)
064510,000429: 27,3655 13703 TCF UPOUT # NO- EXIT UPDATE (HERE WHEN COMPNUMB = 3)
064511,000430:
064512,000431: # VERB 72 BRANCH
064513,000432:
064514,000433: 27,3656 35017 UPEND72 CAF BIT1 # HAVE AN ODD NO. OF COMPONENTS
064515,000434: 27,3657 70300 MASK COMPNUMB # BEEN SENT FOR A V72 UPDATE ...
064516,000435: 27,3660 10000 CCS A
064517,000436: 27,3661 13663 TCF +2 # YES
064518,000437: 27,3662 13752 TCF UPERROUT # ERROR- SHOULD BE ODD NO. OF COMPONENTS
064519,000438: 27,3663 45016 CS BIT2
064520,000439: 27,3664 60300 AD COMPNUMB
064521,000440: 27,3665 54154 LDLOOP72 TS MPAC # NOW PERFORM THE UPDATE
064522,000441: 27,3666 50000 INDEX A
064523,000442: 27,3667 30305 CAE UPBUFF +1 # PICK UP NEXT UPDATE WORD
064524,000443: 27,3670 22000 LXCH A
064525,000444: 27,3671 10154 CCS MPAC # SET POINTER TO ECADR (MUST BE CCS)
064526,000445: 27,3672 54154 TS MPAC
064527,000446: 27,3673 50000 INDEX A
064528,000447: 27,3674 30305 CAE UPBUFF +1 # PICK UP NEXT ECADR OF REG TO BE UPDATED
064529,000448: 27,3675 54003 TS EBANK # SET EBANK
064530,000449: 27,3676 74373 MASK LOW8 # ISOLATE RELATIVE ADDRESS
064531,000450: 27,3677 50000 INDEX A
064532,000451:
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064534,000453: 27,3700 E3,1400 EBANK= 1400
064535,000454: 27,3700 23400 LXCH 1400 # UPDATE THE REGISTER BY CONTENTS OF L
064536,000455: 27,3701 E3,1706 EBANK= TEPHEM
064537,000456: 27,3701 10154 CCS MPAC # ARE WE THROUGH THE V72 UPDATE...
064538,000457: 27,3702 13665 TCF LDLOOP72 # NO
064539,000458:
064540,000459: # NORMAL FINISH OF P27
064541,000460:
064542,000461: 27,3703 UPOUT EQUALS
064543,000462: 27,3703 02671 TC INTWAKEU # RELEASE GRAB OF ORBITAL INTEGRATION
064544,000463: 27,3704 30301 +1 CAE UPOLDMOD # RESTORE PRIOR P27 MODE
064545,000464: 27,3705 05357 TC NEWMODEX +3
064546,000465: 27,3706 35021 CAF ZERO
064547,000466: 27,3707 54332 TS DNLSTCOD
064548,000467: 27,3710 03757 TC UPACTOFF # TURN OFF 'UPLINK ACTIVITY' LIGHT
064549,000468: 27,3711 00006 EXTEND # KILL GROUP 6.
064550,000469: 27,3712 35021 DCA NEG0
064551,000470: 27,3713 52765 DXCH -PHASE6
064552,000471:
064553,000472: 27,3714 05534 TC ENDEXT # EXTENDED VERB EXIT
064554,000473:
064555,000474: # VERB 70 BRANCH
064556,000475:
064557,000476: 27,3715 00006 UPEND70 EXTEND # V70 DOES THE FOLLOWING WITH DP DELTA
064558,000477: 27,3716 40305 DCS UPBUFF # TIME IN UPBUFF
064559,000478: 27,3717 52315 DXCH UPBUFF +8D
064560,000479: 27,3720 03561 TC TIMEDIDL # DECREMENT AGC CLOCK
064561,000480:
064562,000481: 27,3721 03752 TC UPERROUT # ERROR WHILE DECREMENTING CLOCK -- EXIT
064563,000482:
064564,000483: 27,3722 E3,1706 EBANK= TEPHEM
064565,000484: 27,3722 00006 EXTEND
064566,000485: 27,3723 40305 DCS UPBUFF # COPY DECREMENTERS FOR
064567,000486: 27,3724 52317 DXCH UPBUFF +10D # RESTART PROTECTION
064568,000487: 27,3725 00006 EXTEND
064569,000488: 27,3726 40305 DCS UPBUFF
064570,000489: 27,3727 52321 DXCH UPBUFF +12D
064571,000490:
064572,000491: 27,3730 05412 TC PHASCHNG # RESTART PROTECT (GROUP 6)
064573,000492: 27,3731 04026 OCT 04026
064574,000493:
064575,000494: 27,3732 35021 CAF ZERO
064576,000495: 27,3733 22007 ZL
064577,000496: 27,3734 52317 DXCH UPBUFF +10D # DECREMENT CSM STATE VECTOR TIME
064578,000497: 27,3735 21571 DAS TETCSM
064579,000498:
064580,000499: 27,3736 35021 CAF ZERO
064581,000500:
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Page 1507
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064583,000502: 27,3737 22007 ZL
064584,000503: 27,3740 52321 DXCH UPBUFF +12D # DECREMENT LEM STATE VECTOR TIME
064585,000504: 27,3741 21643 DAS TETLEM
064586,000505: 27,3742 35021 CAF ZERO
064587,000506: 27,3743 22007 ZL
064588,000507: 27,3744 52305 DXCH UPBUFF
064589,000508: 27,3745 21710 DAS TEPHEM +1 # INCREMENT TP TEPHEM
064590,000509: 27,3746 27706 ADS TEPHEM
064591,000510:
064592,000511: 27,3747 05412 TC PHASCHNG # RESTART PROTECT (GROUP 6)
064593,000512: 27,3750 04026 OCT 04026
064594,000513:
064595,000514: 27,3751 0304 EBANK= UPBUFF
064596,000515:
064597,000516: 27,3751 03703 TC UPOUT # GO TO STANDARD UPDATE PROGRAM EXIT
064598,000517:
064599,000518: # ERROR SEQUENCE
064600,000519:
064601,000520: 27,3752 04400 UPERROUT TC FALTON # TURN ON *OPERATOR ERROR* LIGHT
064602,000521: 27,3753 13703 TCF UPOUT # GO TO COMMON UPDATE PROGRAM EXIT
064603,000522:
064604,000523: 27,3754 04400 +2 TC FALTON # TURN ON 'OPERATOR ERROR' LIGHT
064605,000524: 27,3755 03757 TC UPACTOFF # TURN OFF 'UPLINK ACTIVITY' LIGHT
064606,000525: 27,3756 05534 TC ENDEXT # EXTENDED VERB EXIT
064607,000526: # (THE PURPOSE OF UPERROUT +2 EXIT IS
064608,000527: # TO PROVIDE AN ERROR EXIT WHICH DOES NOT
064609,000528: # RESET ANY RESTART GROUPS)
064610,000529:
064611,000530: # :UPACTOFF: IS A ROUTINE TO TURN OFF UPLINK ACTIVITY LIGHT ON ALL EXITS FROM UPDATE PROGRAM (P27).
064612,000531:
064613,000532: 27,3757 45015 UPACTOFF CS BIT3
064614,000533: 27,3760 00006 EXTEND # TURN OFF UPLINK ACTIVITY LIGHT
064615,000534: 27,3761 03011 WAND DSALMOUT # (BIT 3 OF CHANNEL 11)
064616,000535: 27,3762 00002 TC Q
End of include-file UPDATE_PROGRAM.agc. Parent file is MAIN.agc