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.
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. |
045953,000002: ## Copyright: Public domain.
045954,000003: ## Filename: DOWN-TELEMETRY_PROGRAM.agc
045955,000004: ## Purpose: Part of the source code for Colossus build 237.
045956,000005: ## This is for the Command Module's (CM) Apollo Guidance
045957,000006: ## Computer (AGC), for Apollo 8.
045958,000007: ## Assembler: yaYUL
045959,000008: ## Contact: Onno Hommes <ohommes@alumni.cmu.edu>
045960,000009: ## Website: www.ibiblio.org/apollo/index.html
045961,000010: ## Page Scans: www.ibiblio.org/apollo/ScansForConversion/Colossus237/
045962,000011: ## Mod history: 2010-05-22 OH Adapted from corresponding Colossus 249 file.
045963,000012: ## 2010-12-04 JL Remove Colossus 249 header comments. Change to double-has page numbers.
045964,000013: ## 2011-02-12 JL Minor fixes.
045965,000014: ## 2017-01-01 RSB Proofed comment text using octopus/ProoferComments,
045966,000015: ## and fixed errors found.
045967,000016: ## 2017-01-08 RSB Fixed comment errors detected in cross-diff vs
045968,000017: ## Colossus 249.
045969,000018: ## 2017-03-15 RSB Comment-text fixes identified in 5-way
045970,000019: ## side-by-side diff of Luminary 69/99/116/131/210.
045971,000020:
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Page 1060 |
045973,000022: # PROGRAM NAME- DOWN TELEMETRY PROGRAM
045974,000023: # MOD NO.- 0 TO COMPLETELY REWRITE THE DOWN TELEMETRY PROGRAM AND DOWNLINK ERASABLE DUMP PROGRAM FOR THE
045975,000024: # PURPOSE OF SAVING APPROXIMATELY 150 WORDS OF CORE STORAGE.
045976,000025: # THIS CHANGE REQUIRES AN ENTIRELY NEW METHOD OF SPECIFYING DOWNLINK LISTS.REFER TO DOWNLINK
045977,000026: # LISTS LOG SECTION FOR MORE DETAILS. HOWEVER THIS CHANGE WILL NOT AFFECT THE GROUND PROCESSING
045978,000027: # OF DOWN TELEMETRY DATA.
045979,000028: # MOD BY- KILROY, SMITH, DEWITT
045980,000029: # DATE- 02OCT67
045981,000030: # AUTHORS- KILROY, SMITH, DEWITT, DEWOLF, FAGIN
045982,000031: # LOG SECTION- DOWN-TELEMETRY PROGRAM
045983,000032: # FUNCTIONAL DESCRIPTION- THIS ROUTINE IS INITIATED BY TELEMETRY END
045984,000033: # PULSE FROM THE DOWNLINK TELEMETRY CONVERTER. THIS PULSE OCCURS
045985,000034: # AT 50 TIMES PER SEC(EVERY 20 MS) THEREFORE DODOWNTM IS
045986,000035: # EXECUTED AT THESE RATES. THIS ROUTINE SELECTS THE APPROPRIATE
045987,000036: # AGC DATA TO BE TRANSMITTED DOWNLINK AND LOADS IT INTO OUTPUT
045988,000037: # CHANNELS 34 AND 35. THE INFORMATION IS THEN GATED OUT FROM THE
045989,000038: # LGC IN SERIAL FASHION.
045990,000039: # THIS PROGRAM IS CODED FOR A 2 SECOND DOWNLIST. SINCE DOWNRUPTS
045991,000040: # OCCUR EVERY 20 MS AND 2 AGC COMPUTER WORDS CAN BE PLACED IN
045992,000041: # CHANNELS 34 AND 35 DURING EACH DOWNRUPT THE PROGRAM IS CAPABLE
045993,000042: # OF SENDING 200 AGC WORDS EVERY 2 SECONDS.
045994,000043: # CALLING SEQUENCE- NONE
045995,000044: # PROGRAM IS ENTERED VIA TCF DODOWNTM WHICH IS EXECUTED AS A
045996,000045: # RESULT OF A DOWNRUPT. CONTROL IS RETURNED VIA TCF RESUME WHICH
045997,000046: # IN EFFECT IS A RESUME.
045998,000047: # SUBROUTINES CALLED- NONE
045999,000048: # NORMAL EXIT MODE- TCF RESUME
046000,000049: # ALARM OR ABORT EXIT MODE- NONE
046001,000050: # RESTART PROTECTION:
046002,000051: # ON A FRESH START AND RESTART THE 'STARTSUB' SUBROUTINE WILL INITIALIZE THE DOWNLIST POINTER(ACTUALLY
046003,000052: # DNTMGOTO) TO THE BEGINNING OF THE CURRENT DOWNLIST(I.E. CURRENT CONTENTS OF DNLSTADR). THIS HAS THE
046004,000053: # EFFECT OF IGNORING THE REMAINDER OF THE DOWNLIST WHICH THE DOWN-TELEMETRY PROGRAM WAS WORKING ON WHEN
046005,000054: # THE RESTART(OR FRESH START) OCCURRED AND RESUME DOWN TELEMETRY FROM THE BEGINNING OF THE CURRENT
046006,000055: # DOWNLIST.
046007,000056: # ALSO OF INTEREST IS THE FACT THAT ON A RESTART THE AGC WILL ZERO DOWNLINK CHANNELS 13, 34 AND 35.
046008,000057: # DOWNLINK LIST SELECTION:
046009,000058: # THE APPROPRIATE DOWNLINK LISTS ARE SELECTED BY THE FOLLOWING:
046010,000059: # 1. FRESH START
046011,000060: # 2. V37EXXE WHERE XX = THE MAJOR MODE BEING SELECTED.
046012,000061: # 3. UPDATE PROGRAM(P27)
046013,000062: # 4. NON-V37 SELECTABLE TYPE PROGRAMS(E.G. AGS INITIALIZATION(SUNDANCE,LUMINARY) AND P61-P62
046014,000063: # TRANSITION(COLOSSUS) ETC.).
046015,000064: # DOWNLINK LIST RULES AND LIMITATIONS:
046016,000065: # READ SECTION(S) WHICH FOLLOW 'DEBRIS' WRITEUP.
046017,000066: # OUTPUT- EVERY 2 SECONDS 100 DOUBLE PRECISION WORDS(I.E. 200 LGC
046018,000067: # COMPUTER WORDS) ARE TRANSMITTED VIA DOWNLINK.
046019,000068: # ERASABLE INITIALIZATION REQUIRED- NONE
046020,000069: # 'DNTMGOTO' AND 'DNLSTADR' ARE INITIALIZED BY THE FRESH START PROGRAM.
046021,000070: # DEBRIS(ERASABLE LOCATIONS DESTROYED BY THIS PROGRAM)-
046022,000071: # LDATALST,DNTMBUFF TO DNTMBUFF +21D,TMINDEX,DNQ.
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Page 1061 Empty page. |
046025,000074:
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Page 1062 |
046027,000076: # DODOWNTM IS ENTERED EVERY 20 MS BY AN INTERRUPT TRIGGERED BY THE
046028,000077: # RECEIPT OF AN ENDPULSE FROM THE SPACECRAFT TELEMETRY PROGRAMMER.
046029,000078:
046030,000079: # NOTES REGARDING DOWNLINK LISTS ASSOCIATED WITH THIS PROGRAM:
046031,000080: # 1. DOWNLISTS. - DOWNLISTS MUST BE COMPILED IN THE SAME BANK AS THE
046032,000081: # DOWN-TELEMETRY PROGRAM. THIS IS DONE FOR EASE OF CODING, FASTER
046033,000082: # EXECUTION.
046034,000083: # 2. EACH DOWNLINK LIST CONSISTS OF A CONTROL LIST AND A NUMBER OF
046035,000084: # SUBLISTS.
046036,000085: # 3. A SUBLIST REFERS TO A SNAPSHOT OR DATA COMMON TO THE SAME OR OTHER
046037,000086: # DOWNLINK LISTS. ANY SUBLIST CONTAINING COMMON DATA NEEDS TO BE
046038,000087: # CODED ONLY ONCE FOR THE APPLICABLE DOWNLINK LISTS.
046039,000088: # 4. SNAPSHOT SUBLISTS REFER SPECIFICALLY TO HOMOGENOUS DATA WHICH MUST BE
046040,000089: # SAVED IN A BUFFER DURING ONE DOWNRUPT.
046041,000090: # 5. THE 1DNADR FOR THE 1ST WORD OF SNAPSHOT DATA IS FOUND AT THE END
046042,000091: # OF EACH SNAPSHOT SUBLIST, SINCE THE PROGRAM CODING SENDS THIS DP WORD
046043,000092: # IMMEDIATELY AFTER STORING THE OTHERS IN THE SNAPSHOT BUFFER.
046044,000093: # 6. ALL LISTS ARE COMBINATIONS OF CODED ERASABLE ADDRESS CONSTANTS
046045,000094: # CREATED FOR THE DOWNLIST PROGRAM.
046046,000095: # A. 1DNADR 1-WORD DOWNLIST ADDRESS.
046047,000096: # SAME AS ECADR, BUT USED WHEN THE WORD ADDRESSED IS THE LEFT
046048,000097: # HALF OF A DOUBLE-PRECISION WORD FOR DOWN TELEMETRY.
046049,000098: # B. 2DNADR - 6DNADR N-WORD DOWNLIST ADDRESS, N = 2 - 6.
046050,000099: # SAME AS 1DNADR, BUT WITH THE 4 UNUSED BITS OF THE ECADR FORMAT
046051,000100: # FILLED IN WITH 0001-0101. USED TO POINT TO A LIST OF N DOUBLE-
046052,000101: # PRECISION WORDS, STORED CONSECUTIVELY, FOR DOWN TELEMETRY.
046053,000102: # C. DNCHAN DOWNLIST CHANNEL ADDRESS.
046054,000103: # SAME AS 1DNADR, BUT WITH PREFIX BITS 0111. USED TO POINT TO
046055,000104: # A PAIR OF CHANNELS FOR DOWN TELEMETRY.
046056,000105: # D. DNPTR DOWN TELEMETRY SUBLIST POINTER.
046057,000106: # SAME AS CAF BUT TAGGED AS A CONSTANT. USED IN CONTROL LIST TO POINT TO A SUBLIST.
046058,000107: # CAUTION--- A DNPTR CANNOT BE USED IN A SUBLIST.
046059,000108: # 7. THE WORD ORDER CODE IS SET TO ZERO AT THE BEGINNING OF EACH DOWNLIST (I.E. CONTROL LIST) AND WHEN
046060,000109: # A '1DNADR TIME2' IS DETECTED IN THE CONTROL LIST(ONLY).
046061,000110: # 8. IN THE SNAPSHOT SUBLIST ONLY, THE DNADR'S CANNOT POINT TO THE FIRST WORD OF ANY EBANK.
046062,000111:
046063,000112: # DOWNLINK LIST RESTRICTIONS:
046064,000113: # (THE FOLLOWING POINTS MAY BE LISTED ELSEWHERE BUT ARE LISTED HERE SO IT IS CLEAR THAT THESE THINGS CANNOT BE
046065,000114: # DONE)
046066,000115:
046067,000116: # 1. SNAPSHOT DOWNLIST:
046068,000117: # (A) CANNOT CONTAIN THE FOLLOWING ECADRS (I.E. 1DNADR'S): 0, 400, 1000, 1400, 2000, 2400, 3000, 3400.
046069,000118: # (B) CAN CONTAIN ONLY 1DNADR'S
046070,000119: # 2. ALL DOWNLINKED DATA(EXCEPT CHANNELS) IS PICKED UP BY A <DCA<SO DOWNLINK LISTS CANNOT CONTAIN THE
046071,000120: # EQUIVALENT OF THE FOLLOWING ECADRS(I.E. IDNADRS): 377, 777, 1377, 1777, 2377, 27777, 3377, 3777.
046072,000121:
046073,000122: # (NOTE: THE TERM EQUIVALENT ' MEANT THAT THE IDNADR TO 6DNADR WILL BE PROCESSED LIKE 1 TO 6 ECADRS)
046074,000123:
046075,000124: # 3. CONTROL LISTS AND SUBLISTS CANNOT HAVE ENTRIES = OCTAL 00000 OR OCTAL 77777
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Page 1063 |
046077,000126: # 4. THE '1DNADR TIME2' WHICH WILL CAUSE THE DOWNLINK PROGRAM TO SET THE WORDER CODE TO 3 MUST APPEAR IN THE
046078,000127: # CONTROL SECTION OF THE DOWNLIST.
046079,000128:
046080,000129: # 5. 'DNCHAN 0' CANNOT BE USED.
046081,000130:
046082,000131: # 6. 'DNPTR 0' CANNOT BE USED.
046083,000132:
046084,000133: # 7. DNPTR CANNOT APPEAR IN A SUBLIST.
046085,000134:
046086,000135:
046087,000136:
046088,000137:
046089,000138: # EBANK SETTINGS
046090,000139: # IN THE PROCESS OF SETTING THE EBANK(WHEN PICKING UP DOWNLINK DATA) THE DOWN TELEMETRY PROGRAM PUTS
046091,000140: # 'GARBAGE' INTO BITS15-12 OF EBANK. HUGH BLAIR-SMITH WARNS US THAT BITS15-12 OF EBANK MAY BECOME
046092,000141: # SIGNIFICANT SOMEDAY IN THE FUTURE. IF/WHEN THAT HAPPENS, THE PROGRAM SHOULD INSURE(BY MASKING ETC.)
046093,000142: # THAT BITS 15-12 OF EBANK ARE ZERO.
046094,000143: # INITIALIZATION REQUIRED- TO INTERRUPT CURRENT LIST AND START A NEW ONE..
046095,000144: # 1. ADRES OF DOWNLINK LIST INTO DNLSTADR
046096,000145: # 2. NEGONE INTO SUBLIST
046097,000146: # 3. NEGONE INTO DNECADR
046098,000147:
046099,000148: 22,3505 BANK 22
046100,000149: 05,2000 SETLOC DOWNTELM
046101,000150: 05,2000 BANK
046102,000151:
046103,000152: 05,3331 0340 EBANK= DNTMBUFF
046104,000153:
046105,000154: 05,3331 COUNT 05/DPROG
046106,000155:
046107,000156: 05,3331 54016 DODOWNTM TS BANKRUPT
046108,000157: 05,3332 00006 EXTEND
046109,000158: 05,3333 22012 QXCH QRUPT # SAVE Q
046110,000159: 05,3334 34704 CA BIT7 # SET WORD ORDER CODE TO 1. EXCEPTION- AT
046111,000160: 05,3335 00006 EXTEND # THE BEGINNING OF EACH LIST THE WORD
046112,000161: 05,3336 05013 WOR CHAN13 # CODE WILL BE SET BACK TO 0.
046113,000162: 05,3337 00335 TC DNTMGOTO # GOTO APPROPRIATE PHASE OF PROGRAM
046114,000163:
046115,000164: 05,3340 37716 DNPHASE1 CA NEGONE # INITIALIZE ALL CONTROL WORDS
046116,000165: 05,3341 54337 TS SUBLIST # WORDS TO MINUS ONE
046117,000166: 05,3342 54336 TS DNECADR
046118,000167: 05,3343 33463 CA LDNPHAS2 # SET DNTMGOTO =O ALL SUBSEQUENT DOWNRUPTS
046119,000168: 05,3344 54335 TS DNTMGOTO # GO TO DNPHASE2
046120,000169: 05,3345 13361 TCF NEWLIST
046121,000170: 05,3346 10336 DNPHASE2 CCS DNECADR # SENDING OF DATA IN PROGRESS
046122,000171: 05,3347 03476 DODNADR TC FETCH2WD # YES - THEN FETCH THE NEXT 2 SP WORDS
046123,000172: 05,3350 77753 MINTIME2 -1DNADR TIME2 # NEGATIVE OF TIME2 1DNADR
046124,000173: 05,3351 13352 TCF +1 # (ECADR OF 3776 + 74001 = 77777)
046125,000174:
046126,000175: 05,3352 10337 CCS SUBLIST # IS THE SUBLIST IN CONTROL
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Page 1064 |
046128,000177: 05,3353 13511 TCF NEXTINSL # YES
046129,000178: 05,3354 74001 DNADRDCR OCT 74001 # DNADR COUNT AND ECADR DECREMENTER
046130,000179:
046131,000180: 05,3355 30334 CHKLIST CA CTLIST
046132,000181: 05,3356 00006 EXTEND
046133,000182: 05,3357 63361 BZMF NEWLIST # IT WILL BE NEGATIVE AT END OF LIST
046134,000183: 05,3360 13366 TCF NEXTINCL
046135,000184: 05,3361 50332 NEWLIST INDEX DNLSTCOD
046136,000185: 05,3362 32342 CA DNTABLE # INITIALIZE CTLIST WITH
046137,000186: 05,3363 54334 TS CTLIST # STARTING ADDRESS OF NEW LIST
046138,000187: 05,3364 40332 CS DNLSTCOD
046139,000188: 05,3365 13601 TCF SENDID +3
046140,000189: 05,3366 50334 NEXTINCL INDEX CTLIST
046141,000190: 05,3367 30000 CA 0
046142,000191: 05,3370 10000 CCS A
046143,000192: 05,3371 24334 INCR CTLIST # SET POINTER TO PICK UP NEXT CTLIST WORD
046144,000193: 05,3372 13376 TCF +4 # ON NEXT ENTRY TO PROG. (A SHOULD NOT =0)
046145,000194: 05,3373 56334 XCH CTLIST # SET CTLIST TO NEGATIVE AND PLACE(CODING)
046146,000195: 05,3374 40000 COM # UNCOMPLEMENTED DNADR INTO A. (FOR LA)
046147,000196: 05,3375 56334 XCH CTLIST # (ST IN )
046148,000197: 05,3376 24000 +4 INCR A # (CTLIST)
046149,000198: 05,3377 54336 TS DNECADR # SAVE DNADR
046150,000199: 05,3400 63350 AD MINTIME2 # TEST FOR TIME2 (NEG. OF ECADR)
046151,000200: 05,3401 10000 CCS A
046152,000201: 05,3402 13406 TCF SETWO +1 # DON'T SET WORD ORDER CODE
046153,000202: 05,3403 47777 MINB1314 OCT 47777 # MINUS BIT 13 AND 14 (CAN'T GET HERE)
046154,000203: 05,3404 13406 TCF SETWO +1 # DON'T SET WORD ORDER CODE
046155,000204: 05,3405 03430 SETWO TC WOZERO # GO SET WORD ORDER CODE TO ZERO.
046156,000205: 05,3406 30336 +1 CA DNECADR # RELOAD A WITH THE DNADR.
046157,000206: 05,3407 63403 +2 AD MINB1314 # IS THIS A REGULAR DNADR?
046158,000207: 05,3410 00006 EXTEND
046159,000208: 05,3411 63476 BZMF FETCH2WD # YES. (A MUST NEVER BE ZERO)
046160,000209: 05,3412 67710 AD MINB12 # NO- IS IT A POINTER (DNPTR) OR A
046161,000210: 05,3413 00006 EXTEND # CHANNEL(DNCHAN)
046162,000211: 05,3414 63434 BZMF DODNPTR # IT'S A POINTER. (A MUST NEVER BE ZERO)
046163,000212:
046164,000213: 05,3415 00006 DODNCHAN TC 6 # (EXECUTED AS EXTEND) IT S A CHANNEL
046165,000214: 05,3416 50336 INDEX DNECADR
046166,000215: 05,3417 44000 INDEX 0 -4000 # (EXECUTED AS READ)
046167,000216: 05,3420 54001 TS L
046168,000217: 05,3421 00006 TC 6 # (EXECUTED AS EXTEND)
046169,000218: 05,3422 50336 INDEX DNECADR
046170,000219: 05,3423 43777 INDEX 0 -4001 # (EXECUTED AS READ)
046171,000220: 05,3424 54336 TS DNECADR # SET DNECADR
046172,000221: 05,3425 37716 CA NEGONE # TO MINUS
046173,000222: 05,3426 56336 XCH DNECADR # WHILE PRESERVING A.
046174,000223: 05,3427 13524 TCF DNTMEXIT # GO SEND CHANNELS
046175,000224:
046176,000225: 05,3430 44704 WOZERO CS BIT7
046177,000226: 05,3431 00006 EXTEND
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Page 1065 |
046179,000228: 05,3432 03013 WAND CHAN13 # SET WORD ORDER CODE TO ZERO
046180,000229: 05,3433 00002 TC Q # RETURN TO CALLER
046181,000230:
046182,000231: 05,3434 50336 DODNPTR INDEX DNECADR # DNECADR CONTAINS ADRES OF SUBLIST
046183,000232: 05,3435 00000 0 0 # CLEAR AND ADD LIST ENTRY INTO A.
046184,000233: 05,3436 10000 CCS A # IS THIS A SNAPSHOT SUBLIST
046185,000234: 05,3437 30336 CA DNECADR # NO, IT IS A REGULAR SUBLIST.
046186,000235: 05,3440 13510 TCF DOSUBLST # A MUST NOT BE ZERO.
046187,000236:
046188,000237: 05,3441 56336 XCH DNECADR # YES, IT IS A SNAPSHOT SUBLIST.
046189,000238: 05,3442 54337 TS SUBLIST # C(DNECADR) INTO SUBLIST
046190,000239: 05,3443 34714 CAF ZERO # A INTO A
046191,000240: 05,3444 56336 XCH TMINDEX # (NOTE.. TMINDEX = DNECADR)
046192,000241:
046193,000242:
046194,000243: # THE FOLLOWING CODING (FROM SNAPLOOP TO SNAPEND)IS FOR THE PURPOSE OF TAKING A SNAPSHOT OF 12 DP REGISTERS.
046195,000244: # THIS IS DONE BY SAVING 11 DP REGISTERS IN DNTMBUFF AND SENDING THE FIRST DP WORD IMMEDIATELY.
046196,000245: # THE SNAPSHOT PROCESSING IS THE MOST TIME CONSUMING AND THEREFORE THE CODING AND LIST STRUCTURE WERE DESIGNED
046197,000246: # TO MINIMIZE TIME. THE TIME OPTIMIZATION RESULTS IN RULES UNIQUE TO THE SNAPSHOT PORTION OF THE DOWNLIST.
046198,000247: # THESE RULES ARE......
046199,000248: # 1. ONLY 1DNADR'S CAN APPEAR IN THE SNAPSHOT SUBLIST
046200,000249: # 2. THE 1DNADR'S CANNOT REFER TO THE FIRST LOCATION IN ANY BANK.
046201,000250:
046202,000251:
046203,000252: 05,3445 54003 SNAPLOOP TS EBANK # SET EBANK
046204,000253: 05,3446 74373 MASK LOW8 # ISOLATE RELATIVE ADDRESS
046205,000254: 05,3447 00006 EXTEND
046206,000255: 05,3450 50000 INDEX A
046207,000256: 05,3451 E3,1401 EBANK= 1401
046208,000257: 05,3451 31402 DCA 1401 # PICK UP 2 SNAPSHOT WORDS.
046209,000258: 05,3452 0340 EBANK= DNTMBUFF
046210,000259: 05,3452 50336 INDEX TMINDEX
046211,000260: 05,3453 52341 DXCH DNTMBUFF # STORE 2 SNAPSHOT WORDS IN BUFFER
046212,000261: 05,3454 24336 INCR TMINDEX # SET BUFFER INDEX FOR NEXT 2 WORDS.
046213,000262: 05,3455 24336 INCR TMINDEX
046214,000263: 05,3456 24337 SNAPAGN INCR SUBLIST # SET POINTER TO NEXT 2 WORDS OF SNAPSHOT
046215,000264: 05,3457 50337 INDEX SUBLIST
046216,000265: 05,3460 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
046217,000266: 05,3461 10000 CCS A # TEST FOR LAST TWO WORDS OF SNAPSHOT.
046218,000267: 05,3462 13445 TCF SNAPLOOP # NOT LAST TWO.
046219,000268: 05,3463 03346 LDNPHAS2 GENADR DNPHASE2
046220,000269: 05,3464 54337 TS SUBLIST # YES, LAST. SAVE A.
046221,000270: 05,3465 37716 CA NEGONE # SET DNECADR AND
046222,000271: 05,3466 54336 TS DNECADR # SUBLIST POINTERS
046223,000272: 05,3467 56337 XCH SUBLIST # TO NEGATIVE VALUES.
046224,000273: 05,3470 54003 TS EBANK
046225,000274: 05,3471 74373 MASK LOW8
046226,000275: 05,3472 00006 EXTEND
046227,000276: 05,3473 50000 INDEX A
046228,000277: 05,3474 E3,1401 EBANK= 1401
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Page 1066 |
046230,000279: 05,3474 31402 DCA 1401 # PICK UP FIRST 2 WORDS OF SNAPSHOT.
046231,000280: 05,3475 0340 EBANK= DNTMBUFF
046232,000281: 05,3475 13524 SNAPEND TCF DNTMEXIT # NOW GO SEND THEM.
046233,000282:
046234,000283: 05,3476 30336 FETCH2WD CA DNECADR
046235,000284: 05,3477 54003 TS EBANK # SET EBANK
046236,000285: 05,3500 74373 MASK LOW8 # ISOLATE RELATIVE ADDRESS
046237,000286: 05,3501 54001 TS L
046238,000287: 05,3502 33354 CA DNADRDCR # DECREMENT COUNT AND ECADR
046239,000288: 05,3503 26336 ADS DNECADR
046240,000289: 05,3504 00006 EXTEND
046241,000290: 05,3505 50001 INDEX L
046242,000291: 05,3506 E3,1400 EBANK= 1400
046243,000292: 05,3506 31401 DCA 1400 # PICK UP 2 DATA WORDS
046244,000293: 05,3507 0340 EBANK= DNTMBUFF
046245,000294: 05,3507 13524 TCF DNTMEXIT # NOW GO SEND THEM.
046246,000295:
046247,000296: 05,3510 54337 DOSUBLST TS SUBLIST # SET SUBLIST POINTER
046248,000297: 05,3511 50337 NEXTINSL INDEX SUBLIST
046249,000298: 05,3512 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
046250,000299: 05,3513 10000 CCS A # IS IT THE END OF THE SUBLIST
046251,000300: 05,3514 24337 INCR SUBLIST # NO-
046252,000301: 05,3515 13521 TCF +4
046253,000302: 05,3516 54337 TS SUBLIST # SAVE A.
046254,000303: 05,3517 37716 CA NEGONE # SET SUBLIST TO MINUS
046255,000304: 05,3520 56337 XCH SUBLIST # RETRIEVE A.
046256,000305: 05,3521 24000 +4 INCR A
046257,000306: 05,3522 54336 TS DNECADR # SAVE DNADR
046258,000307: 05,3523 13407 TCF SETWO +2 # GO USE COMMON CODING(PROBLEMS WOULD
046259,000308: # OCCUR IF THE PROGRAM ENCOUNTERED A
046260,000309: # DNPTR NOW)
046261,000310:
046262,000311: 05,3524 00006 DNTMEXIT EXTEND # DOWN-TELEMETRY EXIT
046263,000312: 05,3525 01034 WRITE DNTM1 # TO SEND A + L TO CHANNELS 34 + 35
046264,000313: 05,3526 30001 CA L # RESPECTIVELY
046265,000314: 05,3527 00006 TMEXITL EXTEND
046266,000315: 05,3530 01035 WRITE DNTM2
046267,000316: 05,3531 15222 TMRESUME TCF RESUME # EXIT TELEMETRY PROGRAM VIA RESUME.
046268,000317:
046269,000318: 05,3532 7710 MINB12 EQUALS -1/8
046270,000319: 05,3532 0336 DNECADR EQUALS TMINDEX
046271,000320: 05,3532 0334 CTLIST EQUALS LDATALST
046272,000321: 05,3532 0337 SUBLIST EQUALS DNQ
046273,000322:
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046275,000324: # SUBROUTINE NAME- DNDUMP
046276,000325: # FUNCTIONAL DESCRIPTION - TO SEND(DUMP) ALL ERASABLE STORAGE 'N' TIMES.(N = 1 TO 4). BANKS ARE SENT ONE AT A TIME
046277,000326: # EACH BANK IS PRECEEDED BY AN ID WORD, SYNCH BITS, ECADR AND TIME1 FOLLOWED BY THE 256D WORDS OF EACH
046278,000327: # EBANK. EBANKS ARE DUMPED IN ORDER (I.E. EBANK 0 FIRST, THEN EBANK1 ETC.)
046279,000328: # CALLING SEQUENCE- THE GROUND OR ASTRONAUT BY KEYING V74E CAN INITIALIZE THE DUMP.
046280,000329: # AFTER KEYING IN V74E THE CURRENT DOWNLIST WILL BE IMMEDIATELY TERMINATED AND THE DOWNLINK ERASABLE DUMP
046281,000330: # WILL BEGIN.
046282,000331: # ONCE INITIATED THE DOWNLINK ERASABLE DUMP CAN BE TERMINATED (AND INTERRUPTED DOWNLIST REINSTATED) ONLY
046283,000332: # BY THE FOLLOWING:
046284,000333: # 1. A FRESH START
046285,000334: # 2. COMPLETION OF ALL DOWNLINK DUMPS REQUESTED (ACCORDING TO BITS SET IN DUMPCNT). NOTE THAT DUMPCNT
046286,000335: # CAN BE ALTERED BY A V21N01.
046287,000336: # 3. AND INVOLUNTARILY BY A RESTART.
046288,000337: # NORMAL EXIT MODE- TCF DNPHASE1
046289,000338: # ALARM OR ABORT MODE- NONE
046290,000339: # *SUBROUTINES CALLED- NONE.
046291,000340: # ERASABLE INITIALIZATION REQUIRED-
046292,000341: # DUMPCNT OCT 20000 IF 4 COMPLETE ERASABLE DUMPS ARE DESIRED
046293,000342: # DUMPCNT OCT 10000 IF 2 COMPLETE ERASABLE DUMPS ARE DESIRED
046294,000343: # DUMPCNT OCT 04000 IF 1 COMPLETE ERASABLE DUMP IS DESIRED
046295,000344: # DEBRIS- DUMPLOC, DUMPSW, DNTMGOTO, EBANK AND CENTRAL REGISTERS
046296,000345: # TIMING- TIME (IN SECS) = ((NO.DUMPS)*(NO.EBANKS)* (WDSPEREBANK + NO.IDWDS)) / NO.WDSPERSEC
046297,000346: # TIME (IN SECS) = ( 4 )*( 8 )* ( 256 + 4 ) / 100
046298,000347: # THUS TIME (IN SECS TO SEND DUMP OF ERASABLE 4 TIMES VIA DOWNLINK) = 83.2 SECONDS
046299,000348:
046300,000349: # STRUCTURE OF ONE EBANK AS IT IS SENT BY DOWNLINK PROGRAM-
046301,000350: # (REMINDER-THIS ONLY DESCRIBES ONE OF THE 8 EBANKS X 4 (DUMPS) = 32 EBANKS WHICH WILL BE SENT BY DNDUMP)
046302,000351: # DOWNLIST W
046303,000352: # WORD TAKEN FROM CONTENTS OF EXAMPLE O COMMENTS
046304,000353:
046305,000354: # 1 ERASID 0177X 0 DOWNLIST I.D. FOR DOWNLINK ERASABLE DUMP (X=7 CSM, 6 LM)
046306,000355: # 2 LOWIDCOD 77340 1 DOWNLINK SYNCH BITS.(SAME ONE USED IN ALL OTHER DOWNLISTS)
046307,000356: # 3 DUMPLOC 13400 1 (SEE NOTES ON DUMPLOC)1= 3RD ERAS DUMP, 3400=ECADR OF 5TH WD
046308,000357: # 4 TIME1 14120 1 TIME IN CENTISECONDS
046309,000358: # 5 FIRST WORD OF EBANK X 03400 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1400 (ECADR 3400)
046310,000359: # 6 2ND WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1401 (ECADR 3401)
046311,000360: # 7 3RD WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1402 (ECADR 3402)
046312,000361: # . 1
046313,000362: # . 1
046314,000363: # . 1
046315,000364: # 260D 256TH WORD OF EBANK X 03777 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1777 (ECADR 3777)
046316,000365:
046317,000366: # NOTE- DUMPLOC CONTAINS THE COUNTER AND ECADR FOR EACH WORD BEING SENT.
046318,000367: # THE BIT STRUCTURE OF DUMPLOC IS FOLLOWS---
046319,000368: # X = NOT USED
046320,000369: # X ABC EEE RRRRRRRR ABC = ERASABLE DUMP COUNTER(I.E. ABC = 0,1,2 OR 3 WHICH MEANS THAT
046321,000370: # COMPLETE ERASABLE DUMP NUMBER 1,2,3 OR 4 RESPECTIVELY IS IN PROGRESS)
046322,000371: # EEE = EBANK BITS
046323,000372: # RRRRRRRR = RELATIVE ADDRESS WITHIN AN EBANK.
046324,000373:
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046326,000375: 05,3532 34714 DNDUMPI CA ZERO # INITIALIZE DOWNLINK
046327,000376: 05,3533 54336 TS DUMPLOC # ERASABLE DUMP
046328,000377: 05,3534 03576 +2 TC SENDID # GO SEND ID AND SYNCH BITS
046329,000378: 05,3535 33544 CA LDNDUMP1 # SET DNTMGOTO
046330,000379: 05,3536 54335 TS DNTMGOTO # TO LOCATION FOR NEXT PASS
046331,000380: 05,3537 30025 CA TIME1 # PLACE TIME1
046332,000381: 05,3540 56001 XCH L # INTO L
046333,000382: 05,3541 30336 CA DUMPLOC # AND ECADR OF THIS EBANK INTO A
046334,000383: 05,3542 13524 TCF DNTMEXIT # SEND DUMPLOC AND TIME1
046335,000384:
046336,000385: 05,3543 03545 LDNDUMP ADRES DNDUMP
046337,000386: 05,3544 03560 LDNDUMP1 ADRES DNDUMP1
046338,000387:
046339,000388: 05,3545 34711 DNDUMP CA TWO # INCREMENT ECADR IN DUMPLOC
046340,000389: 05,3546 26336 ADS DUMPLOC # TO NEXT DP WORD TO BE
046341,000390: 05,3547 74373 MASK LOW8 # DUMPED AND SAVE IT.
046342,000391: 05,3550 10000 CCS A # IS THIS THE BEGINNING OF A NEW EBANK
046343,000392: 05,3551 13562 TCF DNDUMP2 # NO- THEN CONTINUE DUMPING
046344,000393: 05,3552 30336 CA DUMPLOC # YES- IS THIS THE END OF THE
046345,000394: 05,3553 70333 MASK DUMPCNT # N TH(N = 1 TO 4) COMPLETE ERASABLE
046346,000395: 05,3554 77671 MASK PRIO34 # DUMP(BIT14 FOR 4, BIT13 FOR 2 OR BIT12
046347,000396: 05,3555 10000 CCS A # FOR 1 COMPLETE ERASABLE DUMP(S)).
046348,000397: 05,3556 13340 TCF DNPHASE1 # YES- START SENDING INTERRUPTED DOWNLIST
046349,000398: # AGAIN
046350,000399: 05,3557 13534 TCF DNDUMPI +2 # NO- GO BACK AND INITIALIZE NEXT BANK
046351,000400:
046352,000401: 05,3560 33543 DNDUMP1 CA LDNDUMP # SET DNTMGOTO
046353,000402: 05,3561 54335 TS DNTMGOTO # FOR WORDS 3 TO 256D OF CURRENT EBANK
046354,000403:
046355,000404: 05,3562 30336 DNDUMP2 CA DUMPLOC
046356,000405: 05,3563 54003 TS EBANK # SET EBANK
046357,000406: 05,3564 74373 MASK LOW8 # ISOLATE RELATIVE ADDRESS.
046358,000407: 05,3565 54002 TS Q # (NOTE: MASK INSTRUCTION IS USED TO PICK
046359,000408: 05,3566 34713 CA NEG0 # UP ERASABLE REGISTERS SO THAT EDITING
046360,000409: 05,3567 54001 TS L # REGISTERS 20-23 WILL NOT BE ALTERED.)
046361,000410: 05,3570 50002 INDEX Q
046362,000411: 05,3571 E3,1400 EBANK= 1400 # PICK UP LOW ORDER REGISTER OF PAIR
046363,000412: 05,3571 71401 MASK 1401 # OF ERASABLE REGISTERS.
046364,000413: 05,3572 56001 XCH L
046365,000414: 05,3573 50002 INDEX Q # PICK UP HIGH ORDER REGISTER OF PAIR
046366,000415: 05,3574 71400 MASK 1400 # OF ERASABLE REGISTERS.
046367,000416: 05,3575 0340 EBANK= DNTMBUFF
046368,000417: 05,3575 13524 TCF DNTMEXIT # GO SEND THEM
046369,000418:
046370,000419:
046371,000420: 05,3576 00006 SENDID EXTEND # **ENTRANCE USED BY ERASABLE DUMP PROG.**
046372,000421: 05,3577 22335 QXCH DNTMGOTO # SET DNTMGOTO SO NEXT TIME PROG WILL GO
046373,000422: 05,3600 34747 CAF ERASID # TO LOCATION FOLLOWING :TC SENDID:
046374,000423:
046375,000424: 05,3601 54001 TS L # **ENTRANCE USED BY REGULAR DOWNLINK PG**
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046377,000426: 05,3602 03430 TC WOZERO # GO SET WORD ORDER CODE TO ZERO
046378,000427: 05,3603 32000 CAF LOWIDCOD # PLACE SPECIAL ID CODE INTO L
046379,000428: 05,3604 56001 XCH L # AND ID BACK INTO A
046380,000429: 05,3605 13524 TCF DNTMEXIT # SEND DOWNLIST ID CODE(S).
End of include-file DOWN-TELEMETRY_PROGRAM.agc. Parent file is MAIN.agc