GAP: ASSEMBLE REVISION 001 OF AGC PROGRAM LMY99 BY NASA 2021112-061 16:27 JULY 14,1969Note that the date is the date of the printout, not the date of the program revision.
Source Code
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These source-code files were from the printout at the MIT Museum, with many thanks
to Deborah Douglas, the Museum's Curator of Science and Technology, for releasing
it to us. The printout was digitally photographed by Paul Fjeld. A team of
volunteers transcribed the source code manually from these images or, where
appropriate, modified already-transcribed but similar source Luminary 131 (Apollo 13)
source code to agree with the images from the printout. Note that the page images
presented online are of reduced quality, and that higher-quality 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 001 OF AGC PROGRAM LMY99 BY NASA 2021112-061 16:27 JULY 14,1969Note that the date is the date of the printout, not the date of the program revision. |
043076,000002: ## Copyright: Public domain.
043077,000003: ## Filename: DOWN_TELEMETRY_PROGRAM.agc
043078,000004: ## Purpose: Part of the source code for Luminary 1A build 099.
043079,000005: ## It is part of the source code for the Lunar Module's (LM)
043080,000006: ## Apollo Guidance Computer (AGC), for Apollo 11.
043081,000007: ## Assembler: yaYUL
043082,000008: ## Contact: Ron Burkey <info@sandroid.org>.
043083,000009: ## Website: www.ibiblio.org/apollo.
043084,000010: ## Pages: 988-997
043085,000011: ## Mod history: 2009-05-24 RSB Adapted from the corresponding
043086,000012: ## Luminary131 file, using page
043087,000013: ## images from Luminary 1A.
043088,000014: ## 2011-01-06 JL Fixed pseudo-label indentation.
043089,000015: ## 2016-12-17 RSB Proofed text comments with octopus/ProoferComments
043090,000016: ## and corrected the errors found.
043091,000017: ## 2017-01-28 RSB Back-ported some comment-text fixes
043092,000018: ## identified from Luminary 69.
043093,000019: ## 2017-03-13 RSB Comment-text fixes noted in proofing Luminary 116.
043094,000020: ## 2017-03-15 RSB Comment-text fixes identified in 5-way
043095,000021: ## side-by-side diff of Luminary 69/99/116/131/210.
043096,000022:
043097,000023: ## This source code has been transcribed or otherwise adapted from
043098,000024: ## digitized images of a hardcopy from the MIT Museum. The digitization
043099,000025: ## was performed by Paul Fjeld, and arranged for by Deborah Douglas of
043100,000026: ## the Museum. Many thanks to both. The images (with suitable reduction
043101,000027: ## in storage size and consequent reduction in image quality as well) are
043102,000028: ## available online at www.ibiblio.org/apollo. If for some reason you
043103,000029: ## find that the images are illegible, contact me at info@sandroid.org
043104,000030: ## about getting access to the (much) higher-quality images which Paul
043105,000031: ## actually created.
043106,000032: ##
043107,000033: ## Notations on the hardcopy document read, in part:
043108,000034: ##
043109,000035: ## Assemble revision 001 of AGC program LMY99 by NASA 2021112-61
043110,000036: ## 16:27 JULY 14, 1969
043111,000037:
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Page 988 |
043113,000039: # PROGRAM NAME - DOWN TELEMETRY PROGRAM
043114,000040: # MOD NO. - 0 TO COMPLETELY REWRITE THE DOWN TELEMETRY PROGRAM AND DOWNLINK ERASABLE DUMP PROGRAM FOR THE
043115,000041: # PURPOSE OF SAVING APPROXIMATELY 150 WORDS OF CORE STORAGE.
043116,000042: # THIS CHANGE REQUIRES AN ENTIRELY NEW METHOD OF SPECIFYING DOWNLINK LISTS. REFER TO DOWNLINK
043117,000043: # LISTS LOG SECTION FOR MORE DETAILS. HOWEVER THIS CHANGE WILL NOT AFFECT THE GROUND PROCESSING
043118,000044: # OF DOWN TELEMETRY DATA.
043119,000045: # MOD BY - KILROY, SMITH, DEWITT
043120,000046: # DATE - 02 OCT 67
043121,000047: # AUTHORS - KILROY, SMITH, DEWITT, DEWOLF, FAGIN
043122,000048: # LOG SECTION - DOWN-TELEMETRY PROGRAM
043123,000049:
043124,000050: # FUNCTIONAL DESCRIPTION - THIS ROUTINE IS INITIATED BY TELEMETRY END
043125,000051: # PULSE FROM THE DOWNLINK TELEMETRY CONVERTER. THIS PULSE OCCURS
043126,000052: # AT 50 TIMES PER SEC (EVERY 20 MS) THEREFORE DODOWNTM IS
043127,000053: # EXECUTED AT THESE RATES. THIS ROUTINE SELECTS THE APPROPRIATE
043128,000054: # AGC DATA TO BE TRANSMITTED DOWNLINK AND LOADS IT INTO OUTPUT
043129,000055: # CHANNELS 34 AND 35. THE INFORMATION IS THEN GATED OUT FROM THE
043130,000056: # LGC IN SERIAL FASHION.
043131,000057:
043132,000058: # THIS PROGRAM IS CODED FOR A 2 SECOND DOWNLIST. SINCE DOWNRUPTS
043133,000059: # OCCUR EVERY 20 MS AND 2 AGC COMPUTER WORDS CAN BE PLACED IN
043134,000060: # CHANNELS 34 AND 35 DURING EACH DOWNRUPT THE PROGRAM IS CAPABLE
043135,000061: # OF SENDING 200 AGC WORDS EVERY 2 SECONDS.
043136,000062:
043137,000063: # CALLING SEQUENCE - NONE
043138,000064: # PROGRAM IS ENTERED VIA TCF DODOWNTM WHICH IS EXECUTED AS A
043139,000065: # RESULT OF A DOWNRUPT. CONTROL IS RETURNED VIA TCF RESUME WHICH
043140,000066: # IN EFFECT IS A RESUME.
043141,000067:
043142,000068: # SUBROUTINES CALLED - NONE
043143,000069:
043144,000070: # NORMAL EXIT MODE - TCF RESUME
043145,000071:
043146,000072: # ALARM OR ABORT EXIT MODE - NONE
043147,000073:
043148,000074: # RESTART PROTECTION:
043149,000075: # ON A FRESH START AND RESTART THE 'STARTSUB' SUBROUTINE WILL INITIALIZE THE DOWNLIST POINTER (ACTUALLY
043150,000076: # DNTMGOTO) TO THE BEGINNING OF THE CURRENT DOWNLIST (I.E. CURRENT CONTENTS OF DNLSTADR). THIS HAS THE
043151,000077: # EFFECT OF IGNORING THE REMAINDER OF THE DOWNLIST WHICH THE DOWN-TELEMETRY PROGRAM WAS WORKING ON WHEN
043152,000078: # THE RESTART (OR FRESH START) OCCURRED AND RESUME DOWN TELEMETRY FROM THE BEGINNING OF THE CURRENT
043153,000079: # DOWNLIST.
043154,000080:
043155,000081: # ALSO OF INTEREST IS THE FACT THAT ON A RESTART THE AGC WILL ZERO DOWNLINK CHANNELS 13, 34 AND 35.
043156,000082:
043157,000083: # DOWNLINK LIST SELECTION:
043158,000084: # THE APPROPRIATE DOWNLINK LISTS ARE SELECTED BY THE FOLLOWING:
043159,000085: # 1. FRESH START
043160,000086: # 2. V37EXXE WHERE XX = THE MAJOR MODE BEING SELECTED.
043161,000087: # 3. UPDATE PROGRAM (P27)
043162,000088: # 4. NON-V37 SELECTABLE TYPE PROGRAMS (E.G. AGS INITIALIZATION (SUNDANCE, LUMINARY) AND P61-P62
043163,000089: # TRANSITION (COLOSSUS) ETC.).
043164,000090:
043165,000091: # DOWNLINK LIST RULES AND LIMITATIONS:
043166,000092: # READ SECTION(S) WHICH FOLLOW 'DEBRIS' WRITEUP.
043167,000093:
043168,000094: # OUTPUT - EVERY 2 SECONDS 100 DOUBLE PRECISION WORDS (I.E. 200 LGC
043169,000095: # COMPUTER WORDS) ARE TRANSMITTED VIA DOWNLINK.
043170,000096:
043171,000097: # ERASABLE INITIALIZATION REQUIRED - NONE
043172,000098: # 'DNTMGOTO' AND 'DNLSTADR' ARE INITIALIZED BY THE FRESH START PROGRAM.
043173,000099:
043174,000100: # DEBRIS (ERASABLE LOCATIONS DESTROYED BY THIS PROGRAM) -
043175,000101: # LDATALST, DNTMBUFF TO DNTMBUFF +21D, TMINDEX, DNQ.
043176,000102:
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043179,000105:
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Page 990 |
043181,000107: # DODOWNTM IS ENTERED EVERY 20 MS BY AN INTERRUPT TRIGGERED BY THE
043182,000108: # RECEIPT OF AN ENDPULSE FROM THE SPACECRAFT TELEMETRY PROGRAMMER.
043183,000109:
043184,000110: # NOTES REGARDING DOWNLINK LISTS ASSOCIATED WITH THIS PROGRAM:
043185,000111: # 1. DOWNLISTS. - DOWNLISTS MUST BE COMPILED IN THE SAME BANK AS THE
043186,000112: # DOWN-TELEMETRY PROGRAM. THIS IS DONE FOR EASE OF CODING, FASTER
043187,000113: # EXECUTION.
043188,000114: # 2. EACH DOWNLINK LIST CONSISTS OF A CONTROL LIST AND A NUMBER OF
043189,000115: # SUBLISTS.
043190,000116: # 3. A SUBLIST REFERS TO A SNAPSHOT OR DATA COMMON TO THE SAME OR OTHER
043191,000117: # DOWNLINK LISTS. ANY SUBLIST CONTAINING COMMON DATA NEEDS TO BE
043192,000118: # CODED ONLY ONCE FOR THE APPLICABLE DOWNLINK LISTS.
043193,000119: # 4. SNAPSHOT SUBLISTS REFER SPECIFICALLY TO HOMOGENOUS DATA WHICH MUST BE
043194,000120: # SAVED IN A BUFFER DURING ONE DOWNRUPT.
043195,000121: # 5. THE 1DNADR FOR THE 1ST WORD OF SNAPSHOT DATA IS FOUND AT THE END
043196,000122: # OF EACH SNAPSHOT SUBLIST, SINCE THE PROGRAM CODING SENDS THIS DP WORD
043197,000123: # IMMEDIATELY AFTER STORING THE OTHERS IN THE SNAPSHOT BUFFER.
043198,000124: # 6. ALL LISTS ARE COMBINATIONS OF CODED ERASABLE ADDRESS CONSTANTS
043199,000125: # CREATED FOR THE DOWNLIST PROGRAM.
043200,000126: # A. 1DNADR 1-WORD DOWNLIST ADDRESS.
043201,000127: # SAME AS ECADR, BUT USED WHEN THE WORD ADDRESSED IS THE LEFT
043202,000128: # HALF OF A DOUBLE-PRECISION WORD FOR DOWN TELEMETRY.
043203,000129: # B. 2DNADR - 6DNADR N-WORD DOWNLIST ADDRESS, N = 2 - 6.
043204,000130: # SAME AS 1DNADR, BUT WITH THE 4 UNUSED BITS OF THE ECADR FORMAT
043205,000131: # FILLED IN WITH 0001-0101. USED TO POINT TO A LIST OF N DOUBLE-
043206,000132: # PRECISION WORDS, STORED CONSECUTIVELY, FOR DOWN TELEMETRY.
043207,000133: # C. DNCHAN DOWNLIST CHANNEL ADDRESS.
043208,000134: # SAME AS 1DNADR, BUT WITH PREFIX BITS 0111. USED TO POINT TO
043209,000135: # A PAIR OF CHANNELS FOR DOWN TELEMETRY.
043210,000136: # D. DNPTR DOWN TELEMETRY SUBLIST POINTER.
043211,000137: # SAME AS CAF BUT TAGGED AS A CONSTANT. USED IN CONTROL LIST TO POINT TO A SUBLIST.
043212,000138: # CAUTION --- A DNPTR CANNOT BE USED IN A SUBLIST.
043213,000139: # 7. THE WORD ORDER CODE IS SET TO ZERO AT THE BEGINNING OF EACH DOWNLIST (I.E. CONTROL LIST) AND WHEN
043214,000140: # A '1DNADR TIME2' IS DETECTED IN THE CONTROL LIST (ONLY).
043215,000141: # 8. IN THE SNAPSHOT SUBLIST ONLY, THE DNADR'S CANNOT POINT TO THE FIRST WORD OF ANY EBANK.
043216,000142:
043217,000143: # DOWNLINK LIST RESTRICTIONS:
043218,000144: # (THE FOLLOWING POINTS MAY BE LISTED ELSEWHERE BUT ARE LISTED HERE SO IT IS CLEAR THAT THESE THINGS CANNOT BE
043219,000145: # DONE)
043220,000146: # 1. SNAPSHOT DOWNLIST:
043221,000147: # (A) CANNOT CONTAIN THE FOLLOWING ECADRS (I.E. 1DNADR'S): 0, 400, 1000, 1400, 2000, 2400, 3000, 3400.
043222,000148: # (B) CAN CONTAIN ONLY 1DNADR'S
043223,000149: # 2. ALL DOWNLINKED DATA (EXCEPT CHANNELS) IS PICKED UP BY A <DCA<SO DOWNLINK LISTS CANNOT CONTAIN THE
043224,000150: # EQUIVALENT OF THE FOLLOWING ECADRS (I.E. IDNADRS): 377, 777, 1377, 1777, 2377, 27777, 3377, 3777.
043225,000151: # (NOTE: THE TERM EQUIVALENT ' MEANT THAT THE IDNADR TO 6DNADR WILL BE PROCESSED LIKE 1 TO 6 ECADRS)
043226,000152: # 3. CONTROL LISTS AND SUBLISTS CANNOT HAVE ENTRIES = OCTAL 00000 OR OCTAL 77777
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043228,000154: # 4. THE '1DNADR TIME2' WHICH WILL CAUSE THE DOWNLINK PROGRAM TO SET THE WORDER CODE TO 3 MUST APPEAR IN THE
043229,000155: # CONTROL SECTION OF THE DOWNLIST.
043230,000156: # 5. 'DNCHAN 0' CANNOT BE USED.
043231,000157: # 6. 'DNPTR 0' CANNOT BE USED.
043232,000158: # 7. DNPTR CANNOT APPEAR IN A SUBLIST.
043233,000159:
043234,000160: # EBANK SETTINGS
043235,000161: # IN THE PROCESS OF SETTING THE EBANK (WHEN PICKING UP DOWNLINK DATA) THE DOWN TELEMETRY PROGRAM PUTS
043236,000162: # 'GARBAGE' INTO BITS15-12 OF EBANK. HUGH BLAIR-SMITH WARNS US THAT BITS15-12 OF EBANK MAY BECOME
043237,000163: # SIGNIFICANT SOMEDAY IN THE FUTURE. IF/WHEN THAT HAPPENS, THE PROGRAM SHOULD INSURE (BY MASKING ETC.)
043238,000164: # THAT BITS 15-12 OF EBANK ARE ZERO.
043239,000165:
043240,000166: # INITIALIZATION REQUIRED - TO INTERRUPT CURRENT LIST AND START A NEW ONE..
043241,000167: # 1. ADRES OF DOWNLINK LIST INTO DNLSTADR
043242,000168: # 2. NEGONE INTO SUBLIST
043243,000169: # 3. NEGONE INTO DNECADR
043244,000170:
043245,000171: 22,3711 BANK 22
043246,000172: 05,2000 SETLOC DOWNTELM
043247,000173: 05,2000 BANK
043248,000174:
043249,000175: 05,3506 0340 EBANK= DNTMBUFF
043250,000176:
043251,000177: 05,3506 COUNT* $$/DPROG
043252,000178: 05,3506 54016 DODOWNTM TS BANKRUPT
043253,000179: 05,3507 00006 EXTEND
043254,000180: 05,3510 22012 QXCH QRUPT # SAVE Q
043255,000181: 05,3511 13763 TCF WOTEST
043256,000182: 05,3512 00006 WO1 EXTEND # SET WORD ORDER BIT TO 1 ONLY IF IT
043257,000183: 05,3513 05013 WOR CHAN13 # ALREADY ISN'T.
043258,000184: 05,3514 00335 TC DNTMGOTO # GOTO APPROPRIATE PHASE OF PROGRAM
043259,000185:
043260,000186: 05,3515 37747 DNPHASE1 CA NEGONE # INITIALIZE ALL CONTROL WORDS
043261,000187: 05,3516 54337 TS SUBLIST # WORDS TO MINUS ONE
043262,000188: 05,3517 54336 TS DNECADR
043263,000189: 05,3520 33640 CA LDNPHAS2 # SET DNTMGOTO =O ALL SUBSEQUENT DOWNRUPTS
043264,000190: 05,3521 54335 TS DNTMGOTO # GO TO DNPHASE2
043265,000191: 05,3522 13536 TCF NEWLIST
043266,000192: 05,3523 10336 DNPHASE2 CCS DNECADR # SENDING OF DATA IN PROGRESS
043267,000193: 05,3524 03653 DODNADR TC FETCH2WD # YES - THEN FETCH THE NEXT 2 SP WORDS
043268,000194: 05,3525 77753 MINTIME2 -1DNADR TIME2 # NEGATIVE OF TIME2 1DNADR
043269,000195: 05,3526 13527 TCF +1 # (ECADR OF 3776 + 74001 = 77777)
043270,000196:
043271,000197: 05,3527 10337 CCS SUBLIST # IS THE SUBLIST IN CONTROL
043272,000198: 05,3530 13666 TCF NEXTINSL # YES
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043274,000200: 05,3531 74001 DNADRDCR OCT 74001 # DNADR COUNT AND ECADR DECREMENTER
043275,000201:
043276,000202: 05,3532 30334 CHKLIST CA CTLIST
043277,000203: 05,3533 00006 EXTEND
043278,000204: 05,3534 63536 BZMF NEWLIST # IT WILL BE NEGATIVE AT END OF LIST
043279,000205: 05,3535 13543 TCF NEXTINCL
043280,000206: 05,3536 50332 NEWLIST INDEX DNLSTCOD
043281,000207: 05,3537 32441 CA DNTABLE # INITIALIZE CTLIST WITH
043282,000208: 05,3540 54334 TS CTLIST # STARTING ADDRESS OF NEW LIST
043283,000209: 05,3541 40332 CS DNLSTCOD
043284,000210: 05,3542 13756 TCF SENDID +3
043285,000211: 05,3543 50334 NEXTINCL INDEX CTLIST
043286,000212: 05,3544 30000 CA 0
043287,000213: 05,3545 10000 CCS A
043288,000214: 05,3546 24334 INCR CTLIST # SET POINTER TO PICK UP NEXT CTLIST WORD
043289,000215: 05,3547 13553 TCF +4 # ON NEXT ENTRY TO PROG. (A SHOULD NOT =0)
043290,000216: 05,3550 56334 XCH CTLIST # SET CTLIST TO NEGATIVE AND PLACE(CODING)
043291,000217: 05,3551 40000 COM # UNCOMPLEMENTED DNADR INTO A. (FOR LA)
043292,000218: 05,3552 56334 XCH CTLIST # (ST IN )
043293,000219: 05,3553 24000 +4 INCR A # (CTLIST)
043294,000220: 05,3554 54336 TS DNECADR # SAVE DNADR
043295,000221: 05,3555 63525 AD MINTIME2 # TEST FOR TIME2 (NEG. OF ECADR)
043296,000222: 05,3556 10000 CCS A
043297,000223: 05,3557 13563 TCF SETWO +1 # DON'T SET WORD ORDER CODE
043298,000224: 05,3560 47777 MINB1314 OCT 47777 # MINUS BIT 13 AND 14 (CAN'T GET HERE)
043299,000225: 05,3561 13563 TCF SETWO +1 # DON'T SET WORD ORDER CODE
043300,000226: 05,3562 03605 SETWO TC WOZERO # GO SET WORD ORDER CODE TO ZERO.
043301,000227: 05,3563 30336 +1 CA DNECADR # RELOAD A WITH THE DNADR.
043302,000228: 05,3564 63560 +2 AD MINB1314 # IS THIS A REGULAR DNADR?
043303,000229: 05,3565 00006 EXTEND
043304,000230: 05,3566 63653 BZMF FETCH2WD # YES. (A MUST NEVER BE ZERO)
043305,000231: 05,3567 67741 AD MINB12 # NO- IS IT A POINTER (DNPTR) OR A
043306,000232: 05,3570 00006 EXTEND # CHANNEL(DNCHAN)
043307,000233: 05,3571 63611 BZMF DODNPTR # IT'S A POINTER. (A MUST NEVER BE ZERO)
043308,000234:
043309,000235: 05,3572 00006 DODNCHAN TC 6 # (EXECUTED AS EXTEND) IT S A CHANNEL
043310,000236: 05,3573 50336 INDEX DNECADR
043311,000237: 05,3574 44000 INDEX 0 -4000 # (EXECUTED AS READ)
043312,000238: 05,3575 54001 TS L
043313,000239: 05,3576 00006 TC 6 # (EXECUTED AS EXTEND)
043314,000240: 05,3577 50336 INDEX DNECADR
043315,000241: 05,3600 43777 INDEX 0 -4001 # (EXECUTED AS READ)
043316,000242: 05,3601 54336 TS DNECADR # SET DNECADR
043317,000243: 05,3602 37747 CA NEGONE # TO MINUS
043318,000244: 05,3603 56336 XCH DNECADR # WHILE PRESERVING A.
043319,000245: 05,3604 13701 TCF DNTMEXIT # GO SEND CHANNELS
043320,000246:
043321,000247: 05,3605 44745 WOZERO CS BIT7
043322,000248: 05,3606 00006 EXTEND
043323,000249: 05,3607 03013 WAND CHAN13 # SET WORD ORDER CODE TO ZERO
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043325,000251: 05,3610 00002 TC Q # RETURN TO CALLER
043326,000252:
043327,000253: 05,3611 50336 DODNPTR INDEX DNECADR # DNECADR CONTAINS ADRES OF SUBLIST
043328,000254: 05,3612 00000 0 0 # CLEAR AND ADD LIST ENTRY INTO A.
043329,000255: 05,3613 10000 CCS A # IS THIS A SNAPSHOT SUBLIST
043330,000256: 05,3614 30336 CA DNECADR # NO, IT IS A REGULAR SUBLIST.
043331,000257: 05,3615 13665 TCF DOSUBLST # A MUST NOT BE ZERO.
043332,000258:
043333,000259: 05,3616 56336 XCH DNECADR # YES, IT IS A SNAPSHOT SUBLIST.
043334,000260: 05,3617 54337 TS SUBLIST # C(DNECADR) INTO SUBLIST
043335,000261: 05,3620 34755 CAF ZERO # A INTO A
043336,000262: 05,3621 56336 XCH TMINDEX # (NOTE.. TMINDEX = DNECADR)
043337,000263:
043338,000264: # THE FOLLOWING CODING (FROM SNAPLOOP TO SNAPEND) IS FOR THE PURPOSE OF TAKING A SNAPSHOT OF 12 DP REGISTERS.
043339,000265: # THIS IS DONE BY SAVING 11 DP REGISTERS IN DNTMBUFF AND SENDING THE FIRST DP WORD IMMEDIATELY.
043340,000266: # THE SNAPSHOT PROCESSING IS THE MOST TIME CONSUMING AND THEREFORE THE CODING AND LIST STRUCTURE WERE DESIGNED
043341,000267: # TO MINIMIZE TIME. THE TIME OPTIMIZATION RESULTS IN RULES UNIQUE TO THE SNAPSHOT PORTION OF THE DOWNLIST.
043342,000268: # THESE RULES ARE ......
043343,000269: # 1. ONLY 1DNADR'S CAN APPEAR IN THE SNAPSHOT SUBLIST
043344,000270: # 2. THE 1DNADR'S CANNOT REFER TO THE FIRST LOCATION IN ANY BANK.
043345,000271:
043346,000272: 05,3622 54003 SNAPLOOP TS EBANK # SET EBANK
043347,000273: 05,3623 74357 MASK LOW8 # ISOLATE RELATIVE ADDRESS
043348,000274: 05,3624 00006 EXTEND
043349,000275: 05,3625 50000 INDEX A
043350,000276: 05,3626 E3,1401 EBANK= 1401
043351,000277: 05,3626 31402 DCA 1401 # PICK UP 2 SNAPSHOT WORDS.
043352,000278: 05,3627 0340 EBANK= DNTMBUFF
043353,000279: 05,3627 50336 INDEX TMINDEX
043354,000280: 05,3630 52341 DXCH DNTMBUFF # STORE 2 SNAPSHOT WORDS IN BUFFER
043355,000281: 05,3631 24336 INCR TMINDEX # SET BUFFER INDEX FOR NEXT 2 WORDS.
043356,000282: 05,3632 24336 INCR TMINDEX
043357,000283: 05,3633 24337 SNAPAGN INCR SUBLIST # SET POINTER TO NEXT 2 WORDS OF SNAPSHOT
043358,000284: 05,3634 50337 INDEX SUBLIST
043359,000285: 05,3635 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
043360,000286: 05,3636 10000 CCS A # TEST FOR LAST TWO WORDS OF SNAPSHOT.
043361,000287: 05,3637 13622 TCF SNAPLOOP # NOT LAST TWO.
043362,000288: 05,3640 03523 LDNPHAS2 GENADR DNPHASE2
043363,000289: 05,3641 54337 TS SUBLIST # YES, LAST. SAVE A.
043364,000290: 05,3642 37747 CA NEGONE # SET DNECADR AND
043365,000291: 05,3643 54336 TS DNECADR # SUBLIST POINTERS
043366,000292: 05,3644 56337 XCH SUBLIST # TO NEGATIVE VALUES.
043367,000293: 05,3645 54003 TS EBANK
043368,000294: 05,3646 74357 MASK LOW8
043369,000295: 05,3647 00006 EXTEND
043370,000296: 05,3650 50000 INDEX A
043371,000297: 05,3651 E3,1401 EBANK= 1401
043372,000298: 05,3651 31402 DCA 1401 # PICK UP FIRST 2 WORDS OF SNAPSHOT.
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043374,000300: 05,3652 0340 EBANK= DNTMBUFF
043375,000301: 05,3652 13701 SNAPEND TCF DNTMEXIT # NOW GO SEND THEM.
043376,000302:
043377,000303: 05,3653 30336 FETCH2WD CA DNECADR
043378,000304: 05,3654 54003 TS EBANK # SET EBANK
043379,000305: 05,3655 74357 MASK LOW8 # ISOLATE RELATIVE ADDRESS
043380,000306: 05,3656 54001 TS L
043381,000307: 05,3657 33531 CA DNADRDCR # DECREMENT COUNT AND ECADR
043382,000308: 05,3660 26336 ADS DNECADR
043383,000309: 05,3661 00006 EXTEND
043384,000310: 05,3662 50001 INDEX L
043385,000311: 05,3663 E3,1400 EBANK= 1400
043386,000312: 05,3663 31401 DCA 1400 # PICK UP 2 DATA WORDS
043387,000313: 05,3664 0340 EBANK= DNTMBUFF
043388,000314: 05,3664 13701 TCF DNTMEXIT # NOW GO SEND THEM.
043389,000315:
043390,000316: 05,3665 54337 DOSUBLST TS SUBLIST # SET SUBLIST POINTER
043391,000317: 05,3666 50337 NEXTINSL INDEX SUBLIST
043392,000318: 05,3667 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
043393,000319: 05,3670 10000 CCS A # IS IT THE END OF THE SUBLIST
043394,000320: 05,3671 24337 INCR SUBLIST # NO -
043395,000321: 05,3672 13676 TCF +4
043396,000322: 05,3673 54337 TS SUBLIST # SAVE A.
043397,000323: 05,3674 37747 CA NEGONE # SET SUBLIST TO MINUS
043398,000324: 05,3675 56337 XCH SUBLIST # RETRIEVE A.
043399,000325: 05,3676 24000 +4 INCR A
043400,000326: 05,3677 54336 TS DNECADR # SAVE DNADR
043401,000327: 05,3700 13564 TCF SETWO +2 # GO USE COMMON CODING (PROBLEMS WOULD
043402,000328: # OCCUR IF THE PROGRAM ENCOUNTERED A
043403,000329: # DNPTR NOW)
043404,000330:
043405,000331: 05,3701 00006 DNTMEXIT EXTEND # DOWN-TELEMETRY EXIT
043406,000332: 05,3702 01034 WRITE DNTM1 # TO SEND A + L TO CHANNELS 34 + 35
043407,000333: 05,3703 30001 CA L # RESPECTIVELY
043408,000334: 05,3704 00006 TMEXITL EXTEND
043409,000335: 05,3705 01035 WRITE DNTM2
043410,000336: 05,3706 15270 TMRESUME TCF RESUME # EXIT TELEMETRY PROGRAM VIA RESUME.
043411,000337:
043412,000338: 05,3707 7741 MINB12 EQUALS -1/8
043413,000339: 05,3707 0336 DNECADR EQUALS TMINDEX
043414,000340: 05,3707 0334 CTLIST EQUALS LDATALST
043415,000341: 05,3707 0337 SUBLIST EQUALS DNQ
043416,000342:
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Page 995 |
043418,000344: # SUBROUTINE NAME - DNDUMP
043419,000345:
043420,000346: # FUNCTIONAL DESCRIPTION - TO SEND (DUMP) ALL ERASABLE STORAGE 'N' TIMES. (N=1 TO 4). BANKS ARE SENT ONE AT A TIME
043421,000347: # EACH BANK IS PRECEEDED BY AN ID WORD, SYNCH BITS, ECADR AND TIME1 FOLLOWED BY THE 256D WORDS OF EACH
043422,000348: # EBANK. EBANKS ARE DUMPED IN ORDER (I.E. EBANK 0 FIRST, THEN EBANK1 ETC.)
043423,000349:
043424,000350: # CALLING SEQUENCE - THE GROUND OR ASTRONAUT BY KEYING V74E CAN INITIALIZE THE DUMP.
043425,000351: # AFTER KEYING IN V74E THE CURRENT DOWNLIST WILL BE IMMEDIATELY TERMINATED AND THE DOWNLINK ERASABLE DUMP
043426,000352: # WILL BEGIN.
043427,000353:
043428,000354: # ONCE INITIATED THE DOWNLINK ERASABLE DUMP CAN BE TERMINATED (AND INTERRUPTED DOWNLIST REINSTATED) ONLY
043429,000355: # BY THE FOLLOWING:
043430,000356:
043431,000357: # 1. A FRESH START
043432,000358: # 2. COMPLETION OF ALL DOWNLINK DUMPS REQUESTED (ACCORDING TO BITS SET IN DUMPCNT). NOTE THAT DUMPCNT
043433,000359: # CAN BE ALTERED BY A V21N01.
043434,000360: # 3. AND INVOLUNTARILY BY A RESTART.
043435,000361:
043436,000362: # NORMAL EXIT MODE - TCF DNPHASE1
043437,000363:
043438,000364: # ALARM OR ABORT MODE - NONE
043439,000365:
043440,000366: # *SUBROUTINES CALLED - NONE.
043441,000367:
043442,000368: # ERASABLE INITIALIZATION REQUIRED -
043443,000369: # DUMPCNT OCT 20000 IF 4 COMPLETE ERASABLE DUMPS ARE DESIRED
043444,000370: # DUMPCNT OCT 10000 IF 2 COMPLETE ERASABLE DUMPS ARE DESIRED
043445,000371: # DUMPCNT OCT 04000 IF 1 COMPLETE ERASABLE DUMP IS DESIRED
043446,000372:
043447,000373: # DEBRIS - DUMPLOC, DUMPSW, DNTMGOTO, EBANK AND CENTRAL REGISTERS
043448,000374:
043449,000375: # TIMING - TIME (IN SECS) = ((NO.DUMPS)*(NO.EBANKS)*(WDSPEREBANK + NO.IDWDS)) / NO.WDSPERSEC
043450,000376: # TIME (IN SECS) = ( 4 )*( 8 )*( 256 + 4 ) / 100
043451,000377: # THUS TIME (IN SECS TO SEND DUMP OF ERASABLE 4 TIMES VIA DOWNLINK) = 83.2 SECONDS
043452,000378:
043453,000379: # STRUCTURE OF ONE EBANK AS IT IS SENT BY DOWNLINK PROGRAM -
043454,000380: # (REMINDER - THIS ONLY DESCRIBES ONE OF THE 8 EBANKS X 4 (DUMPS) = 32 EBANKS WHICH WILL BE SENT BY DNDUMP)
043455,000381: # DOWNLIST W
043456,000382: # WORD TAKEN FROM CONTENTS OF EXAMPLE O COMMENTS
043457,000383: # 1 ERASID 0177X 0 DOWNLIST I.D. FOR DOWNLINK ERASABLE DUMP (X=7 CSM, 6 LM)
043458,000384: # 2 LOWIDCOD 77340 1 DOWNLINK SYNCH BITS. (SAME ONE USED IN ALL OTHER DOWNLISTS)
043459,000385: # 3 DUMPLOC 13400 1 (SEE NOTES ON DUMPLOC) 1 = 3RD ERAS DUMP, 3400=ECADR OF 5TH WD
043460,000386: # 4 TIME1 14120 1 TIME IN CENTISECONDS
043461,000387: # 5 FIRST WORD OF EBANK X 03400 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1400 (ECADR 3400)
043462,000388: # 6 2ND WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1401 (ECADR 3401)
043463,000389: # 7 3RD WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1402 (ECADR 3402)
043464,000390: # . 1
043465,000391: # . 1
043466,000392: # . 1
043467,000393: # 260D 256TH WORD OF EBANK X 03777 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1777 (ECADR 3777)
043468,000394:
043469,000395: # NOTE - DUMPLOC CONTAINS THE COUNTER AND ECADR FOR EACH WORD BEING SENT.
043470,000396: # THE BIT STRUCTURE OF DUMPLOC IS FOLLOWS---
043471,000397: # X = NOT USED
043472,000398: # X ABC EEE RRRRRRRR ABC = ERASABLE DUMP COUNTER (I.E. ABC = 0,1,2 OR 3 WHICH MEANS THAT
043473,000399: # COMPLETE ERASABLE DUMP NUMBER 1,2,3 OR 4 RESPECTIVELY IS IN PROGRESS)
043474,000400: # EEE = EBANK BITS
043475,000401: # RRRRRRRR = RELATIVE ADDRESS WITHIN AN EBANK.
043476,000402:
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043478,000404: 05,3707 34755 DNDUMPI CA ZERO # INITIALIZE DOWNLINK
043479,000405: 05,3710 54336 TS DUMPLOC # ERASABLE DUMP
043480,000406: 05,3711 03753 +2 TC SENDID # GO SEND ID AND SYNCH BITS
043481,000407: 05,3712 33721 CA LDNDUMP1 # SET DNTMGOTO
043482,000408: 05,3713 54335 TS DNTMGOTO # TO LOCATION FOR NEXT PASS
043483,000409: 05,3714 30025 CA TIME1 # PLACE TIME1
043484,000410: 05,3715 56001 XCH L # INTO L
043485,000411: 05,3716 30336 CA DUMPLOC # AND ECADR OF THIS EBANK INTO A
043486,000412: 05,3717 13701 TCF DNTMEXIT # SEND DUMPLOC AND TIME1
043487,000413:
043488,000414: 05,3720 03722 LDNDUMP ADRES DNDUMP
043489,000415: 05,3721 03735 LDNDUMP1 ADRES DNDUMP1
043490,000416:
043491,000417: 05,3722 34752 DNDUMP CA TWO # INCREMENT ECADR IN DUMPLOC
043492,000418: 05,3723 26336 ADS DUMPLOC # TO NEXT DP WORD TO BE
043493,000419: 05,3724 74357 MASK LOW8 # DUMPED AND SAVE IT.
043494,000420: 05,3725 10000 CCS A # IS THIS THE BEGINNING OF A NEW EBANK
043495,000421: 05,3726 13737 TCF DNDUMP2 # NO - THEN CONTINUE DUMPING
043496,000422: 05,3727 30336 CA DUMPLOC # YES - IS THIS THE END OF THE
043497,000423: 05,3730 70333 MASK DUMPCNT # N TH (N = 1 TO 4) COMPLETE ERASABLE
043498,000424: 05,3731 77722 MASK PRIO34 # DUMP (BIT14 FOR 4, BIT13 FOR 2 OR BIT12
043499,000425: 05,3732 10000 CCS A # FOR 1 COMPLETE ERASABLE DUMP(S)).
043500,000426: 05,3733 13515 TCF DNPHASE1 # YES - START SENDING INTERRUPTED DOWNLIST
043501,000427: # AGAIN
043502,000428: 05,3734 13711 TCF DNDUMPI +2 # NO - GO BACK AND INITIALIZE NEXT BANK
043503,000429:
043504,000430: 05,3735 33720 DNDUMP1 CA LDNDUMP # SET DNTMGOTO
043505,000431: 05,3736 54335 TS DNTMGOTO # FOR WORDS 3 TO 256D OF CURRENT EBANK
043506,000432:
043507,000433: 05,3737 30336 DNDUMP2 CA DUMPLOC
043508,000434: 05,3740 54003 TS EBANK # SET EBANK
043509,000435: 05,3741 74357 MASK LOW8 # ISOLATE RELATIVE ADDRESS.
043510,000436: 05,3742 54002 TS Q # (NOTE: MASK INSTRUCTION IS USED TO PICK
043511,000437: 05,3743 34754 CA NEG0 # UP ERASABLE REGISTERS SO THAT EDITING
043512,000438: 05,3744 54001 TS L # REGISTERS 20-23 WILL NOT BE ALTERED.)
043513,000439: 05,3745 50002 INDEX Q
043514,000440: 05,3746 E3,1400 EBANK= 1400 # PICK UP LOW ORDER REGISTER OF PAIR
043515,000441: 05,3746 71401 MASK 1401 # OF ERASABLE REGISTERS.
043516,000442: 05,3747 56001 XCH L
043517,000443: 05,3750 50002 INDEX Q # PICK UP HIGH ORDER REGISTER OF PAIR
043518,000444: 05,3751 71400 MASK 1400 # OF ERASABLE REGISTERS.
043519,000445: 05,3752 0340 EBANK= DNTMBUFF
043520,000446: 05,3752 13701 TCF DNTMEXIT # GO SEND THEM
043521,000447:
043522,000448: 05,3753 00006 SENDID EXTEND # ** ENTRANCE USED BY ERASABLE DUMP PROG.**
043523,000449: 05,3754 22335 QXCH DNTMGOTO # SET DNTMGOTO SO NEXT TIME PROG WILL GO
043524,000450: 05,3755 35011 CAF ERASID # TO LOCATION FOLLOWING :TC SENDID:
043525,000451:
043526,000452: 05,3756 54001 TS L # ** ENTRANCE USED BY REGULAR DOWNLINK PG **
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Page 997 |
043528,000454: 05,3757 03605 TC WOZERO # GO SET WORD ORDER CODE TO ZERO
043529,000455: 05,3760 32065 CAF LOWIDCOD # PLACE SPECIAL ID CODE INTO L
043530,000456: 05,3761 56001 XCH L # AND ID BACK INTO A
043531,000457: 05,3762 13701 TCF DNTMEXIT # SEND DOWNLIST ID CODE(S).
043532,000458:
043533,000459: 05,3763 34745 WOTEST CA BIT7 # AT THE BEGINNING OF THE LIST THE WORD
043534,000460: 05,3764 00006 EXTEND # ORDER BIT WILL BE SET BACK TO ZERO
043535,000461: 05,3765 02013 RAND CHAN13
043536,000462: 05,3766 10000 CCS A
043537,000463: 05,3767 00335 TC DNTMGOTO
043538,000464: 05,3770 34745 CA BIT7
043539,000465: 05,3771 13512 TCF WO1
043540,000466:
End of include-file DOWN-TELEMETRY_PROGRAM.agc. Parent file is MAIN.agc