Source Code
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These source-code files were obtained by digitally photographing the
Colossus 237 program listing from the private collection of original
AGC developer Fred Martin, and then modifying pre-existing Colossus 249
(Apollo 9) source files to incorporate changes. 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, 1968 |
045719,000002: # Copyright: Public domain.
045720,000003: # Filename: DOWN-TELEMETRY_PROGRAM.agc
045721,000004: # Purpose: Part of the source code for Colossus build 237.
045722,000005: # This is for the Command Module's (CM) Apollo Guidance
045723,000006: # Computer (AGC), we believe for Apollo 8.
045724,000007: # Assembler: yaYUL
045725,000008: # Contact: Onno Hommes <ohommes@alumni.cmu.edu>
045726,000009: # Website: www.ibiblio.org/apollo/index.html
045727,000010: # Page scans: www.ibiblio.org/apollo/ScansForConversion/Colossus237/
045728,000011: # Mod history: 2010-05-22 OH Adapted from corresponding Colossus 249 file.
045729,000012: # 2010-12-04 JL Remove Colossus 249 header comments. Change to double-has page numbers.
045730,000013: # 2011-02-12 JL Minor fixes.
045731,000014:
045732,000015: # # Page 1060
045733,000016: # PROGRAM NAME- DOWN TELEMETRY PROGRAM
045734,000017: # MOD NO.- 0 TO COMPLETELY REWRITE THE DOWN TELEMETRY PROGRAM AND DOWNLINK ERASABLE DUMP PROGRAM FOR THE
045735,000018: # PURPOSE OF SAVING APPROXIMATELY 150 WORDS OF CORE STORAGE.
045736,000019: # THIS CHANGE REQUIRES AN ENTIRELY NEW METHOD OF SPECIFYING DOWNLINK LISTS.REFER TO DOWNLINK
045737,000020: # LISTS LOG SECTION FOR MORE DETAILS. HOWEVER THIS CHANGES WILL NOT AFFECT THE GROUND PROCESSING
045738,000021: # OF DOWN TELEMETRY DATA.
045739,000022: # MOD BY- KILROY, SMITH, DEWITT
045740,000023: # DATE- 02OCT67
045741,000024: # AUTHORS- KILROY, SMITH, DWWITT, DEWOLF, FAGIN
045742,000025: # LOG SECTION- DOWN-TELEMETRY PROGRAM
045743,000026: # FUNCTIONAL DESCRIPTION- THIS ROUTINE IS INITIATED BY TELEMETRY END
045744,000027: # PULSE FROM THE DOWNLINK TELEMETRY CONVERTER. THIS PULSE OCCURS
045745,000028: # A1 50 TIMES PER SEC(EVERY 20 MS) THEREFORE DODOWNTM IS
045746,000029: # EXECUTED AT THESE RATES. THIS ROUTINE SELECTS THE APPROPRIATE
045747,000030: # AGC DATA TO BE TRANSMITTED DOWNLINK AND LOADS IT INTO OUTPUT
045748,000031: # CHANNELS 34 AND 35. THE INFORMATION IS THEN GATED OUT FROM THE
045749,000032: # LGC IN SERIAL FASHION.
045750,000033: # THIS PROGRAM IS CODED FOR A 2 SECOND DOWNLIST. SINCE DOWNRUPTS
045751,000034: # OCCUR EVERY 20 MS AND 2 AGC COMPUTER WORDS CAN BE PLACED IN
045752,000035: # CHANNELS 34 AND 35 DURING EACH DOWNRUPT THE PROGRAM IS CAPABLE
045753,000036: # OF SENDING 200 AGC WORDS EVERY 2 SECONDS.
045754,000037: # CALLING SEQUENCE- NONE
045755,000038: # PROGRAM IS ENTERED VIA TCF DODOWNTM WHICH IS EXECUTED AS A
045756,000039: # RESULT OF A DOWNRUPT. CONTROL IS RETURNED VIA TCF RESUME WHICH
045757,000040: # IN EFFECT IS A RESUME.
045758,000041: # SUBROUTINES CALLED- NONE
045759,000042: # NORMAL EXIT MODE- TCF RESUME
045760,000043: # ALARM OR ABORT EXIT MODE- NONE
045761,000044: # RESTART PROTECTION:
045762,000045: # ON A FRESH START AND RESTART THE 'STARTSUB' SUBROUTINE WILL INITIALIZE THE DOWNLIST POINTER(ACTUALLY
045763,000046: # DNTMGOTO) TO THE BEGINNING OF THE CURRENT DOWNLIST(I.E. CURRENT CONTENTS OF DNLSTADR). THIS HAS THE
045764,000047: # EFFECT OF IGNORING THE REMAINDER OF THE DOWNLIST WHICH THE DOWN-TELEMETRY PROGRAM WAS WORKING ON WHEN
045765,000048: # THE RESTART(OR FRESH START) OCCURRED AND RESUME DOWN TELEMETRY FROM THE BEGINNING OF THE CURRENT
045766,000049: # DOWNLIST.
045767,000050: # ALSO OF INTEREST IS THE FACT THAT ON A RESTART THE AGC WILL ZERO DOWNLINK CHANNELS 13, 34 AND 35.
045768,000051: # DOWNLINK LIST SELECTION:
045769,000052: # THE APPROPRIATE DOWNLINK LISTS ARE SELECTED BY THE FOLLOWING:
045770,000053: # 1. FRESH START
045771,000054: # 2. V37EXXE WHERE XX = THE MAJOR MODE BEING SELECTED.
045772,000055: # 3. UPDATE PROGRAM(P27)
045773,000056: # 4. NON-V37 SELECTABLE TYPE PROGRAMS(E.G. AGS INITIALIZATION(SUNDANCE,LUMINARY) AND P61-P62
045774,000057: # TRANSITION(COLOSSUS) ETC.).
045775,000058: # DOWNLINK LIST RULES AND LIMITATIONS:
045776,000059: # READ SECTION(S) WHICH FOLLOW 'DEBRIS' WRITEUP.
045777,000060: # OUTPUT- EVERY 2 SECONDS 100 DOUBLE PRECISION WORDS(I.E. 200 LGC
045778,000061: # COMPUTER WORDS) ARE TRANSMITTED VIA DOWNLINK.
045779,000062: # ERASABLE INITIALIZATION REQUIRED- NONE
045780,000063: # 'DNTMGOTO' AND 'DNLSTADR' ARE INITIALIZED BY THE FRESH START PROGRAM.
045781,000064: # DEBRIS(ERASABLE LOCATIONS DESTROYED BY THIS PROGRAM)-
045782,000065: # LDATALST,DNTMBUFF TO DNTMBUFF +21D,TMINDEX,DNQ.
045783,000066: # # Page 1061
045784,000067:
045785,000068:
045786,000069: # # Page 1062
045787,000070: # DODOWNTM IS ENTERED EVERY 20 MS BY AN INTERRUPT TRIGGERED BY THE
045788,000071: # RECEIPT OF AN ENDPULSE FROM THE SPACECRAFT TELEMETRY PROGRAMMER.
045789,000072:
045790,000073: # NOTES REGARDING DOWNLINK LISTS ASSOCIATED WITH THIS PROGRAM:
045791,000074: # 1. DOWNLISTS. - DOWNLISTS MUST BE COMPILED IN THE SAME BANK AS THE
045792,000075: # DOWN-TELEMETRY PROGRAM. THIS IS DONE FOR EASE OF CODING, FASTER
045793,000076: # EXECUTION.
045794,000077: # 2. EACH DOWNLINK LIST CONSISTES OF A CONTROL LIST AND A NUMBER OF
045795,000078: # SUBLISTS.
045796,000079: # 3. A SUBLIST REFERS TO A SNAPSHOT OR DATA COMMON TO THE SAME OR OTHER
045797,000080: # DOWNLINK LISTS. ANY SUBLIST CONTAINING COMMON DATA NEEDS TO BE
045798,000081: # CODED ONLY ONCE FOR THE APPLICABLE DOWNLINK LISTS.
045799,000082: # 4. SNAPSHOT SUBLISTS REFER SPECIFICALLY TO HOMOGENEOUS DATA WHICH MUST BE
045800,000083: # SAVED IN A BUFFER DURING ONE DOWNRUPT.
045801,000084: # 5. THE 1DNADR FOR THE 1ST WORD OF SNAPSHOT DATA IS FOUND AT THE END
045802,000085: # OF EACH SNAPSHOT SUBLIST, SINCE THE PROGRAM CODING SENDS THIS DP WORD
045803,000086: # IMMEDIATELY AFTER STORING THE OTHERS IN THE SNAPSHOT BUFFER.
045804,000087: # 6. ALL LISTS ARE COMBINATIONS OF CODED ERASABLE ADDRESS CONSTANTS
045805,000088: # CREATED FOR THE DOWNLIST PROGRAM.
045806,000089: # A. 1DNADR 1-WORD DOWNLIST ADDRESS.
045807,000090: # SAME AS ECADR, BUT USED WHEN THE WORD ADDRESSED IS THE LEFT
045808,000091: # HALF OF A DOUBLE-PRECISION WORD FOR DOWN TELEMETRY.
045809,000092: # B. 2DNADR - 6DNADR N-WORD DOWNLIST ADDRESS, N = 2 - 6.
045810,000093: # SAME AS 1DNADR, BUT WTIH THE 4 UNUSED BITS OF THE ECADR FORMAT
045811,000094: # FILLED IN WITH 0001-0101. USED TO POINT TO A LIST OF N DOUBLE-
045812,000095: # PRECISION WORDS, STORED CONSECUTIVELY, FOR DOWN TELEMETRY.
045813,000096: # C. DNCHAN DOWNLIST CHANNEL ADDRESS.
045814,000097: # SAME AS 1DNADR, BUT WITH PREFIX BITS 0111. USED TO POINT TO
045815,000098: # A PAIR OF CHANNELS FOR DOWN TELEMETRY.
045816,000099: # D. DNPTR DOWN TELEMETRY SUBLIST POINTER.
045817,000100: # SAME AS CAF BUT TAGGED AS A CONSTANT. USED IN CONTROL LIST TO POINT TO A SUBLIST.
045818,000101: # CAUTION--- A DNPTR CANNOT BE USED IN A SUBLIST.
045819,000102: # 7. THE WORD ORDER CODE IS SET TO ZERO AT THE BEGINNING OF EACH DOWNLIST (I.E. CONTROL LIST) AND WHEN
045820,000103: # A '1DNADR TIME2' IS DETECTED IN THE CONTROL LIST(ONLY).
045821,000104: # 8. IN THE SNAPSHOT SUBLIST ONLY, THE DNADR'S CANNOT POINT TO THE FIRST WORD OF ANY EBANK.
045822,000105:
045823,000106: # DOWNLIST LIST RESTRICTIONS:
045824,000107: # (THE FOLLOWING POINTS MAY BE LISTED ELSEWHERE BUT ARE LISTED HERE SO IT IS CLEAR THAT THESE THINGS CANNOT BE
045825,000108: # DONE)
045826,000109:
045827,000110: # 1. SNAPSHOT DOWNLIST:
045828,000111: # (A) CANNOT CONTAIN THE FOLLOWING ECADRS (I.E., 1DNADR'S): Q, 400, 1000, 1400, 2000, 2400, 3000, 3400.
045829,000112: # (B) CAN CONTAIN ONLY 1DNADR'S
045830,000113: # 2. ALL DOWNLINKED DATA(EXCEPT CHANNELS) IS PICKED UP BY A <DCA<SO DOWNLINK LISTS CANNOT CONTAIN THE
045831,000114: # EQUIVALENT OF THE FOLLOWING ECADRS(I.E. IDNADRS): 377, 777, 1377, 1777, 2377, 27777, 3377, 3777.
045832,000115:
045833,000116: # (NOTE: THE TERM EQUIVALENT ' MEANT THAT THE IDNADR TO 6DNADR WILL BE PROCESSED LIKE 1 TO 6 ECADRS)
045834,000117:
045835,000118: # 3. CONTROL LISTS AND SUBLISTS CANNOT HAVE ENTRIES = OCTAL 00000 OR OCTAL 77777
045836,000119: # # Page 1063
045837,000120: # 4. THE '1DNADR TIME2' WHICH WILL CAUSE THE DOWNLINT PROGRAM TO SET THE WORDER CODE TO 3 MUST APPEAR IN THE
045838,000121: # CONTROL SECTION OF THE DOWNLIST.
045839,000122:
045840,000123: # 5. 'DNCHAN 0' CANNOT BE USED.
045841,000124:
045842,000125: # 6. 'DNPTR 0' CANNOT BE USED.
045843,000126:
045844,000127: # 7. DNPTR CANNOT APPEAR IN A SUBLIST.
045845,000128:
045846,000129:
045847,000130:
045848,000131:
045849,000132: # EBANK SETTINGS
045850,000133: # IN THE PROCESS OF SETTING THE EBANK(WHEN PICKING UP DOWNLINK DATA) THE DOWN TELEMETRY PROGRAM PUTS
045851,000134: # 'GARBAGE' INTO BITS15-12 OF EBANK. HUGH BLAIR-SMITH WARNS US THAT BITS15-12 OF EBANK MAY BECOME
045852,000135: # SIGNIFICANT SOMEDAY IN THE FUTURE. IF/WHEN THAT HAPPENS, THE PROGRAM SHOULD INSURE(BY MASKING ETC.)
045853,000136: # THAT BITS 15-12 OF EBANK ARE ZERO.
045854,000137: # INITIALIZATION REQUIRED- TO INTERRUPT CURRENT LIST AND START A NEW ONE.,
045855,000138: # 1. ADRES OF DOWNLINK LIST INTO DNLSTADR
045856,000139: # 2. NEGONE INTO SUBLIST
045857,000140: # 3. NEGONE INTO DNECADR
045858,000141:
045859,000142: 22,3505 BANK 22
045860,000143: 05,2000 SETLOC DOWNTELM
045861,000144: 05,2000 BANK
045862,000145:
045863,000146: 05,3331 0340 EBANK= DNTMBUFF
045864,000147:
045865,000148: 05,3331 COUNT 05/DPROG
045866,000149:
045867,000150: 05,3331 54016 DODOWNTM TS BANKRUPT
045868,000151: 05,3332 00006 EXTEND
045869,000152: 05,3333 22012 QXCH QRUPT # SAVE Q
045870,000153: 05,3334 34704 CA BIT7 # SET WORD ORDER CODE TO 1. EXCEPTION- AT
045871,000154: 05,3335 00006 EXTEND # THE BEGINNING OF EACH LIST THE WORD
045872,000155: 05,3336 05013 WOR CHAN13 # CODE WILL BE SET BACK TO 0.
045873,000156: 05,3337 00335 TC DNTMGOTO # GOTO APPROPRIATE PHASE OF PROGRAM
045874,000157:
045875,000158: 05,3340 37716 DNPHASE1 CA NEGONE # INITIALIZE ALL CONTROL WORDS
045876,000159: 05,3341 54337 TS SUBLIST # WORDS TO MINUS ONE
045877,000160: 05,3342 54336 TS DNECADR
045878,000161: 05,3343 33463 CA LDNPHAS2 # SET DNTMGOTO =0 ALL SUBSEQUENT DOWNRUPTS
045879,000162: 05,3344 54335 TS DNTMGOTO # GO TO DNPHASE2
045880,000163: 05,3345 13361 TCF NEWLIST
045881,000164: 05,3346 10336 DNPHASE2 CCS DNECADR # SENDING OF DATA IN PROGRESS
045882,000165: 05,3347 03476 DODNADR TC FETCH2WD # YES - THEN FETCH THE NEXT 2 SP WORDS
045883,000166: 05,3350 77753 MINTIME2 -1DNADR TIME2 # NEGATIVE OF TIME2 1DNADR
045884,000167: 05,3351 13352 TCF +1 # (ECADR OF 3776 + 74001 = 77777)
045885,000168:
045886,000169: 05,3352 10337 CCS SUBLIST # IS THE SUBLIST IN CONTROL
045887,000170: # # Page 1064
045888,000171: 05,3353 13511 TCF NEXTINSL # YES
045889,000172: 05,3354 74001 DNADRDCR OCT 74001 # DNADR COUNT AND ECADR DECREMENTER
045890,000173:
045891,000174: 05,3355 30334 CHKLIST CA CTLIST
045892,000175: 05,3356 00006 EXTEND
045893,000176: 05,3357 63361 BZMF NEWLIST # IT WILL BE NEGATIVE AT END OF LIST
045894,000177: 05,3360 13366 TCF NEXTINCL
045895,000178: 05,3361 50332 NEWLIST INDEX DNLSTCOD
045896,000179: 05,3362 32342 CA DNTABLE # INITIALIZE CTLIST WITH
045897,000180: 05,3363 54334 TS CTLIST # STARTING ADDRESS OF NEW LIST
045898,000181: 05,3364 40332 CS DNLSTCOD
045899,000182: 05,3365 13601 TCF SENDID +3
045900,000183: 05,3366 50334 NEXTINCL INDEX CTLIST
045901,000184: 05,3367 30000 CA 0
045902,000185: 05,3370 10000 CCS A
045903,000186: 05,3371 24334 INCR CTLIST # SET POINTER TO PICK UP NEXT CTLIST WORD
045904,000187: 05,3372 13376 TCF +4 # ON NEXT ENTRY TO PROG. (A SHOULD NOT =0)
045905,000188: 05,3373 56334 XCH CTLIST # SET CTLIST TO NEGATIVE AND PLACE(CODING)
045906,000189: 05,3374 40000 COM # UNCOMPLEMENTED DNADR INTO A. (FOR LA)
045907,000190: 05,3375 56334 XCH CTLIST # (ST IN )
045908,000191: 05,3376 24000 +4 INCR A # (CTLIST)
045909,000192: 05,3377 54336 TS DNECADR # SAVE DNADR
045910,000193: 05,3400 63350 AD MINTIME2 # TEST FOR TIME2 (NEG. OF ECADR)
045911,000194: 05,3401 10000 CCS A
045912,000195: 05,3402 13406 TCF SETWO +1 # DON'T SET WORD ORDER CODE
045913,000196: 05,3403 47777 MINB1314 OCT 47777 # MINUS BIT 13 AND 14 (CAN'T GET HERE)
045914,000197: 05,3404 13406 TCF SETWO +1 # DON'T SET WORD ORDER CODE
045915,000198: 05,3405 03430 SETWO TC WOZERO # GO SET WORD ORDER CODE TO ZERO.
045916,000199: 05,3406 30336 +1 CA DNECADR # RELOAD A WITH THE DNADR.
045917,000200: 05,3407 63403 +2 AD MINB1314 # IS THIS A REGULAR DNADR?
045918,000201: 05,3410 00006 EXTEND
045919,000202: 05,3411 63476 BZMF FETCH2WD # YES. (A MUST NEVER BE ZERO)
045920,000203: 05,3412 67710 AD MINB12 # NO- IS IT A POINTER (DNPTR) OR A
045921,000204: 05,3413 00006 EXTEND # CHANNEL(DNCHAN)
045922,000205: 05,3414 63434 BZMF DODNPTR # IT'S A POINTER. (A MUST NEVER BE ZERO)
045923,000206:
045924,000207: 05,3415 00006 DODNCHAN TC 6 # (EXECUTED AS EXTEND) IT S A CHANNEL
045925,000208: 05,3416 50336 INDEX DNECADR
045926,000209: 05,3417 44000 INDEX 0 -4000 # (EXECUTED AS READ)
045927,000210: 05,3420 54001 TS L
045928,000211: 05,3421 00006 TC 6 # (EXECUTED AS EXTEND)
045929,000212: 05,3422 50336 INDEX DNECADR
045930,000213: 05,3423 43777 INDEX 0 -4001 # (EXECUTED AS READ)
045931,000214: 05,3424 54336 TS DNECADR # SET DNECADR
045932,000215: 05,3425 37716 CA NEGONE # TO MINUS
045933,000216: 05,3426 56336 XCH DNECADR # WHILE PRESERVING A.
045934,000217: 05,3427 13524 TCF DNTMEXIT # GO SEND CHANNELS
045935,000218:
045936,000219: 05,3430 44704 WOZERO CS BIT7
045937,000220: 05,3431 00006 EXTEND
045938,000221: # # Page 1065
045939,000222: 05,3432 03013 WAND CHAN13 # SET WORD ORDER CODE TO ZERO
045940,000223: 05,3433 00002 TC Q # RETURN TO CALLER
045941,000224:
045942,000225: 05,3434 50336 DODNPTR INDEX DNECADR # DNECADR CONTAINS ADRES OF SUBLIST
045943,000226: 05,3435 00000 0 0 # CLEAR AND ADD LIST ENTRY INTO A.
045944,000227: 05,3436 10000 CCS A # IS THIS A SNAPSHOT SUBLIST
045945,000228: 05,3437 30336 CA DNECADR # NO, IT IS A REGULAR SUBLIST.
045946,000229: 05,3440 13510 TCF DOSUBLST # A MUST NOT BE ZERO.
045947,000230:
045948,000231: 05,3441 56336 XCH DNECADR # YES, IT IS A SNAPSHOT SUBLIST.
045949,000232: 05,3442 54337 TS SUBLIST # C(DNECADR) INTO SUBLIST
045950,000233: 05,3443 34714 CAF ZERO # A INTO A
045951,000234: 05,3444 56336 XCH TMINDEX # (NOTE.. TMINDEX = DNECADR)
045952,000235:
045953,000236:
045954,000237: # THE FOLLOWING CODING (FROM SNAPLOOP TO SNAPEND)IS FOR THE PURPOSE OF TAKING A SNAPSHOT OF 12 DP REGISTERS.
045955,000238: # THIS IS DONE BY SAVING 11 DP REGISTERS IN DNTMBUFF AND SENDING THE FIRST DP WORD IMMEDIATELY.
045956,000239: # THE SNAPSHOT PROCESSING IS THE MOST TIME CONSUMING AND THEREFORE THE CODING AND LIST STRUCTURE WERE DESIGNED
045957,000240: # TO MINIMIZE TIME. THE TIME OPTIMIZATION RESULTS IN RULES UNIQUE TO THE SNAPSHOT PORTION OF THE DOWNLIST.
045958,000241: # THESE RULES ARE......
045959,000242: # 1. ONLY 1DNADR'S CAN APPEAR IN THE SNAPSHOT SUBLIST
045960,000243: # 2. THE 1DNADR'S CANNOT REFER TO THE FIRST LOCATION IN ANY BANK.
045961,000244:
045962,000245:
045963,000246: 05,3445 54003 SNAPLOOP TS EBANK # SET EBANK
045964,000247: 05,3446 74373 MASK LOW8 # ISOLATE RELATIVE ADDRESS
045965,000248: 05,3447 00006 EXTEND
045966,000249: 05,3450 50000 INDEX A
045967,000250: 05,3451 E3,1401 EBANK= 1401
045968,000251: 05,3451 31402 DCA 1401 # PICK UP 2 SNAPSHOT WORDS.
045969,000252: 05,3452 0340 EBANK= DNTMBUFF
045970,000253: 05,3452 50336 INDEX TMINDEX
045971,000254: 05,3453 52341 DXCH DNTMBUFF # STORE 2 SNAPSHOT WORDS IN BUFFER
045972,000255: 05,3454 24336 INCR TMINDEX # SET BUFFER INDEX FOR NEXT 2 WORDS.
045973,000256: 05,3455 24336 INCR TMINDEX
045974,000257: 05,3456 24337 SNAPAGN INCR SUBLIST # SET POINTER TO NEXT 2 WORDS OF SNAPSHOT
045975,000258: 05,3457 50337 INDEX SUBLIST
045976,000259: 05,3460 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
045977,000260: 05,3461 10000 CCS A # TEST FOR LAST TWO WORDS OF SNAPSHOT.
045978,000261: 05,3462 13445 TCF SNAPLOOP # NOT LAST TWO.
045979,000262: 05,3463 03346 LDNPHAS2 GENADR DNPHASE2
045980,000263: 05,3464 54337 TS SUBLIST # YES, LAST. SAVE A.
045981,000264: 05,3465 37716 CA NEGONE # SET DNECADR AND
045982,000265: 05,3466 54336 TS DNECADR # SUBLIST POINTERS
045983,000266: 05,3467 56337 XCH SUBLIST # TO NEGATIVE VALUES
045984,000267: 05,3470 54003 TS EBANK
045985,000268: 05,3471 74373 MASK LOW8
045986,000269: 05,3472 00006 EXTEND
045987,000270: 05,3473 50000 INDEX A
045988,000271: 05,3474 E3,1401 EBANK= 1401
045989,000272: # # Page 1066
045990,000273: 05,3474 31402 DCA 1401 # PICK UP FIRST 2 WORDS OF SNAPSHOT.
045991,000274: 05,3475 0340 EBANK= DNTMBUFF
045992,000275: 05,3475 13524 SNAPEND TCF DNTMEXIT # NOW GO SEND THEM.
045993,000276:
045994,000277: 05,3476 30336 FETCH2WD CA DNECADR
045995,000278: 05,3477 54003 TS EBANK # SET EBANK
045996,000279: 05,3500 74373 MASK LOW8 # ISOLATE RELATIVE ADDRESS
045997,000280: 05,3501 54001 TS L
045998,000281: 05,3502 33354 CA DNADRDCR # DECREMENT COUNT AND ECADR
045999,000282: 05,3503 26336 ADS DNECADR
046000,000283: 05,3504 00006 EXTEND
046001,000284: 05,3505 50001 INDEX L
046002,000285: 05,3506 E3,1400 EBANK= 1400
046003,000286: 05,3506 31401 DCA 1400 # PICK UP 2 DATA WORDS
046004,000287: 05,3507 0340 EBANK= DNTMBUFF
046005,000288: 05,3507 13524 TCF DNTMEXIT # NOW GO SEND THEM.
046006,000289:
046007,000290: 05,3510 54337 DOSUBLST TS SUBLIST # SET SUBLIST POINTER
046008,000291: 05,3511 50337 NEXTINSL INDEX SUBLIST
046009,000292: 05,3512 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
046010,000293: 05,3513 10000 CCS A # IS IT THE END OF THE SUBLIST
046011,000294: 05,3514 24337 INCR SUBLIST # NO-
046012,000295: 05,3515 13521 TCF +4
046013,000296: 05,3516 54337 TS SUBLIST # SAVE A.
046014,000297: 05,3517 37716 CA NEGONE # SET SUBLIST TO MINUS
046015,000298: 05,3520 56337 XCH SUBLIST # RETRIEVE A.
046016,000299: 05,3521 24000 +4 INCR A
046017,000300: 05,3522 54336 TS DNECADR # SAVE DNADR
046018,000301: 05,3523 13407 TCF SETWO +2 # GO USE COMMON CODING(PROLEMS WOULD
046019,000302: # OCCUR IF THE PROGRAM ENCOUNTERED A
046020,000303: # DNPTR NOW)
046021,000304:
046022,000305: 05,3524 00006 DNTMEXIT EXTEND # DOWN-TELEMETRY EXIT
046023,000306: 05,3525 01034 WRITE DNTM1 # TO SEND A + L TO CHANNELS 34 + 35
046024,000307: 05,3526 30001 CA L # RESPECTIVELY
046025,000308: 05,3527 00006 TMEXITL EXTEND
046026,000309: 05,3530 01035 WRITE DNTM2
046027,000310: 05,3531 15222 TMRESUME TCF RESUME # EXIT TELEMTRY PROGRAM VIA RESUME.
046028,000311:
046029,000312: 05,3532 7710 MINB12 EQUALS -1/8
046030,000313: 05,3532 0336 DNECADR EQUALS TMINDEX
046031,000314: 05,3532 0334 CTLIST EQUALS LDATALST
046032,000315: 05,3532 0337 SUBLIST EQUALS DNQ
046033,000316:
046034,000317: # # Page 1067
046035,000318: # SUBROUTINE NAME- DNDUMP
046036,000319: # FUNCTIONAL DESCRIPTION - TO SEND(DUMP) ALL ERASABLE STORAGE 'N' TIMES.(N = 1 TO 4). BANKS ARE SENT ONE AT A TIME
046037,000320: # EACH BANK IS PRECEDED BY AN ID WORD, SYNCH BITS, ECADR AND TIME1 FOLLOWED BY THE 256D WORDS OF EACH
046038,000321: # EBANK. EBANKS ARE DUMPED IN ORDER (I.E. EBANK 0 FIRST, THEN EBANK1 ETC.)
046039,000322: # CALLING SEQUENCE- THE GROUND OR ASTRONAUT BY KEYING V74E CAN INITIALIZE THE DUMP.
046040,000323: # AFTER KEYING IN V74E THE CURRENT DOWNLIST WILL BE IMMEDIATELY TERMINATED AND THE DOWNLINK ERASABLE DUMP
046041,000324: # WILL BEGIN.
046042,000325: # ONCE INITITIATED THE DOWNLINK ERASABLE DUMP CAN BE TERMINATED (AND INTERRUPTED DOWNLIST REINSTATED) ONLY
046043,000326: # BY THE FOLLOWING:
046044,000327: # 1. A FRESH START
046045,000328: # 2. COMPLETION OF ALL DOWNLINK DUMPS REQUESTED (ACCORDING TO BITS SET IN DUMPCNT). NOTE THAT DUMPCNT
046046,000329: # CAN BE ALTERED BY A V21N01.
046047,000330: # 3. AND INVOLUNTARILY BY A RESTART.
046048,000331: # NORMAL EXIT MODE- TCF DNPHASE1
046049,000332: # ALARM OR ABORT MODE- NONE
046050,000333: # *SUBROUTINES CALLED- NONE
046051,000334: # ERASABLE INITIALIZATION REQUIRED-
046052,000335: # DUMPCNT OCT 20000 IF 4 COMPLETE ERASABLE DUMPS ARE DESIRED
046053,000336: # DUMPCNT OCT 10000 IF 2 COMPLETE ERASABLE DUMPS ARE DESIRED
046054,000337: # DUMPCNT OCT 04000 IF 1 COMPLETE ERASABLE DUMP IS DESIRED
046055,000338: # DEBRIS- DUMPLOC, DUMPSW, DNTMGOTO, EBANK AND CENTRAL REGISTERS
046056,000339: # TIMING- TIME (IN SECS) = ((NO.DUMPS)*(NO.EBANKS)* (WDSPEREBANK + NO.IDWDS)) / NO.WDSPERSEC
046057,000340: # TIME (IN SECS) = ( 4 )*( 8 )* ( 256 + 4 ) / 100
046058,000341: # THUS TIME (IN SECS TO SEND DUMP OF ERASABLE 4 TIMES VIA DOWNLINK) = 83.2 SECONDS
046059,000342:
046060,000343: # STRUCTURE OF ONE EBANK AS IT IS SENT BY DOWNLINK PROGRAM-
046061,000344: # (REMINDER-THIS ONLY DESCRIBES ONE OF THE 8 EBANKS X 4 (DUMPS) = 32 EBANKS WHICH WILL BE SENT BY DNDUMP)
046062,000345: # DOWNLIST W
046063,000346: # WORD TAKEN FROM CONTENTS OF EXAMPLE O COMMENTS
046064,000347:
046065,000348: # 1 ERASID 0177X 0 DOWNLIST I.D. FOR DOWNLINK ERASABLE DUMP (X=7 CSM, 6 LM)
046066,000349: # 2 LOWIDCOD 77340 1 DOWNLINK SYNCH BITS.(SAME ONE USED IN ALL OTHER DOWNLISTS)
046067,000350: # 3 DUMPLOC 13400 1 (SEE NOTES ON DUMPLOC)1= 3RD ERAS DUMP, 3400=ECADR OF 5TH WD
046068,000351: # 4 TIME1 14120 1 TIME IN CENTISECONDS
046069,000352: # 5 FIRST WORD OF EBANK X 03400 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1400 (ECADR 3400)
046070,000353: # 6 2ND WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1401 (ECADR 3401)
046071,000354: # 7. 3RD WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1402 (ECADR 3402)
046072,000355: # . 1
046073,000356: # . 1
046074,000357: # . 1
046075,000358: # 260D 256TH WORD OF EBANK X 03777 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1777 (ECADR 3777)
046076,000359:
046077,000360: # NOTE- DUMPLOC CONTAINS THE COUNTER AND ECADR FOR EACH WORD BEING SENT.
046078,000361: # THE BIT STRUCTURE OF DUMPLOC IS FOLLOWS---
046079,000362: # X = NOT USED
046080,000363: # X ABC EEE RRRRRRRR ABC = ERASABLE DUMP COUNTER(I.E. ABC = 0,1,2, OR 3 WHICH MEANS THAT
046081,000364: # COMPLETE ERASABLE DUMP NUMBER 1,2,3, OR 4 RESPECTIVELY IS IN PROGRESS)
046082,000365: # EEE = EBANK BITS
046083,000366: # RRRRRRRR = RELATIVE ADDRESS WITHIN AN EBANK.
046084,000367:
046085,000368: # # Page 1068
046086,000369: 05,3532 34714 DNDUMPI CA ZERO # INITIALIZE DOWNLINK
046087,000370: 05,3533 54336 TS DUMPLOC # ERASABLE DUMP
046088,000371: 05,3534 03576 +2 TC SENDID # GO SEND ID AND SYNCH BITS
046089,000372: 05,3535 33544 CA LDNDUMP1 # SET DNTMGOTO
046090,000373: 05,3536 54335 TS DNTMGOTO # TO LOCATION FOR NEXT PASS
046091,000374: 05,3537 30025 CA TIME1 # PLACE TIME1
046092,000375: 05,3540 56001 XCH L # INTO L
046093,000376: 05,3541 30336 CA DUMPLOC # AND ECADR OF THIS EBANK INTO A
046094,000377: 05,3542 13524 TCF DNTMEXIT # SEND DUMPLOC AND TIME1
046095,000378:
046096,000379: 05,3543 03545 LDNDUMP ADRES DNDUMP
046097,000380: 05,3544 03560 LDNDUMP1 ADRES DNDUMP1
046098,000381:
046099,000382: 05,3545 34711 DNDUMP CA TWO # INCREMENT ECADR IN DUMPLOC
046100,000383: 05,3546 26336 ADS DUMPLOC # TO NEXT DP WORD TO BE
046101,000384: 05,3547 74373 MASK LOW8 # DUMPED AND SAVE IT.
046102,000385: 05,3550 10000 CCS A # IS THIS THE BEGINNING OF A NEW EBANK
046103,000386: 05,3551 13562 TCF DNDUMP2 # NO- THEN CONTINUE DUMPING
046104,000387: 05,3552 30336 CA DUMPLOC # YES- IS THIS THE END OF THE
046105,000388: 05,3553 70333 MASK DUMPCNT # N TH(N = 1 TO 4) COMPLETE ERASABLE
046106,000389: 05,3554 77671 MASK PRIO34 # DUMP(BIT14 FOR 4, BIT13 FOR 2 OR BIT12
046107,000390: 05,3555 10000 CCS A # FOR 1 COMPLETE ERASABLE DUMP(S)).
046108,000391: 05,3556 13340 TCF DNPHASE1 # YES- START SENDING INTERRUPTED DOWNLIST
046109,000392: # AGAIN
046110,000393: 05,3557 13534 TCF DNDUMPI +2 # NO- GO BACK AND INITIALZE NEXT BANK
046111,000394:
046112,000395: 05,3560 33543 DNDUMP1 CA LDNDUMP # SET DNTMGOTO
046113,000396: 05,3561 54335 TS DNTMGOTO # FOR WORDS 3 TO 256D OF CURRENT EBANK
046114,000397:
046115,000398: 05,3562 30336 DNDUMP2 CA DUMPLOC
046116,000399: 05,3563 54003 TS EBANK # SET EBANK
046117,000400: 05,3564 74373 MASK LOW8 # ISOLATE RELATIVE ADDRESS.
046118,000401: 05,3565 54002 TS Q # (NOTE: MASK INSTRUCTION IS USED TO PICK
046119,000402: 05,3566 34713 CA NEG0 # UP ERASABLE REGISTERS TO THAT EDITING
046120,000403: 05,3567 54001 TS L # REGISTERS 20-23 WILL NOT BE ALTERED.)
046121,000404: 05,3570 50002 INDEX Q
046122,000405: 05,3571 E3,1400 EBANK= 1400 # PICK UP LOW ORDER REGISTER OF PAIR
046123,000406: 05,3571 71401 MASK 1401 # OF ERASABLE REGISTERS.
046124,000407: 05,3572 56001 XCH L
046125,000408: 05,3573 50002 INDEX Q # PICK UP HIGH ORDER REGISTER OF PAIR
046126,000409: 05,3574 71400 MASK 1400 # OF ERASABLE REGISTERS.
046127,000410: 05,3575 0340 EBANK= DNTMBUFF
046128,000411: 05,3575 13524 TCF DNTMEXIT # GO SEND THEM
046129,000412:
046130,000413:
046131,000414: 05,3576 00006 SENDID EXTEND # **ENTRANCE USED BY ERASABLE DUMP PROG.**
046132,000415: 05,3577 22335 QXCH DNTMGOTO # SET DNTMGOTO SO NEXT TIME PROG WILL GO
046133,000416: 05,3600 34747 CAF ERASID # TO LOCATION FOLLOWING :TC SENDID:
046134,000417:
046135,000418: 05,3601 54001 TS L # **ENTRANCE USED BY REGULAR DOWNLINK PG**
046136,000419: # # Page 1069
046137,000420: 05,3602 03430 TC WOZERO # GO SET WORD ORDER CODE TO ZERO
046138,000421: 05,3603 32000 CAF LOWIDCOD # PLACE SPECIAL ID CODE INTO L
046139,000422: 05,3604 56001 XCH L # AND ID BACK INTO A
046140,000423: 05,3605 13524 TCF DNTMEXIT # SEND DOWNLIST ID CODE(S).
End of include-file DOWN-TELEMETRY_PROGRAM.agc. Parent file is MAIN.agc