GAP: ASSEMBLE REVISION 055 OF AGC PROGRAM COMANCHE BY NASA 2021113-051 10:28 APR. 1,1969Note 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 Colossus 249 (Apollo 9)
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 055 OF AGC PROGRAM COMANCHE BY NASA 2021113-051 10:28 APR. 1,1969Note that the date is the date of the printout, not the date of the program revision. |
048564,000002: ## Copyright: Public domain.
048565,000003: ## Filename: DOWN-TELEMETRY_PROGRAM.agc
048566,000004: ## Purpose: Part of the source code for Comanche, build 055. It
048567,000005: ## is part of the source code for the Command Module's
048568,000006: ## (CM) Apollo Guidance Computer (AGC), Apollo 11.
048569,000007: ## Assembler: yaYUL
048570,000008: ## Reference: pp. 1093-1102
048571,000009: ## Contact: Ron Burkey <info@sandroid.org>
048572,000010: ## Website: http://www.ibiblio.org/apollo.
048573,000011: ## Mod history: 2009-05-08 RSB Adapted from Colossus249/ file of same name
048574,000012: ## and page images. Corrected various typos
048575,000013: ## in the transcription of program comments,
048576,000014: ## and these should be back-ported to
048577,000015: ## Colossus249.
048578,000016: ## 2010-08-28 JL Fixed indentation.
048579,000017: ## 2016-12-21 RSB Proofed comment text using octopus/ProoferComments
048580,000018: ## and corrected the errors found.
048581,000019: ## 2017-01-08 RSB Fixed comment errors detected in cross-diff vs
048582,000020: ## Colossus 249.
048583,000021: ## 2017-03-15 RSB Comment-text fixes identified in 5-way
048584,000022: ## side-by-side diff of Luminary 69/99/116/131/210.
048585,000023:
048586,000024: ## The contents of the "Comanche055" files, in general, are transcribed
048587,000025: ## from scanned documents.
048588,000026: ##
048589,000027: ## Assemble revision 055 of AGC program Comanche by NASA
048590,000028: ## 2021113-051. April 1, 1969.
048591,000029: ##
048592,000030: ## This AGC program shall also be referred to as Colossus 2A
048593,000031: ##
048594,000032: ## Prepared by
048595,000033: ## Massachusetts Institute of Technology
048596,000034: ## 75 Cambridge Parkway
048597,000035: ## Cambridge, Massachusetts
048598,000036: ##
048599,000037: ## under NASA contract NAS 9-4065.
048600,000038: ##
048601,000039: ## Refer directly to the online document mentioned above for further
048602,000040: ## information. Please report any errors to info@sandroid.org.
048603,000041:
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Page 1093 |
048605,000043: # PROGRAM NAME - DOWN TELEMETRY PROGRAM
048606,000044: # MOD NO. - 0 TO COMPLETELY REWRITE THE DOWN TELEMETRY PROGRAM AND DOWNLINK ERASABLE DUMP PROGRAM FOR THE
048607,000045: # PURPOSE OF SAVING APPROXIMATELY 150 WORDS OF CORE STORAGE.
048608,000046: # THIS CHANGE REQUIRES AN ENTIRELY NEW METHOD OF SPECIFYING DOWNLINK LISTS. REFER TO DOWNLINK
048609,000047: # LISTS LOG SECTION FOR MORE DETAILS. HOWEVER THIS CHANGE WILL NOT AFFECT THE GROUND PROCESSING
048610,000048: # OF DOWN TELEMETRY DATA.
048611,000049: # MOD BY - KILROY, SMITH, DEWITT
048612,000050: # DATE - 02 OCT 67
048613,000051: # AUTHORS - KILROY, SMITH, DEWITT, DEWOLF, FAGIN
048614,000052: # LOG SECTION - DOWN-TELEMETRY PROGRAM
048615,000053:
048616,000054: # FUNCTIONAL DESCRIPTION - THIS ROUTINE IS INITIATED BY TELEMETRY END
048617,000055: # PULSE FROM THE DOWNLINK TELEMETRY CONVERTER. THIS PULSE OCCURS
048618,000056: # AT 50 TIMES PER SEC (EVERY 20 MS) THEREFORE DODOWNTM IS
048619,000057: # EXECUTED AT THESE RATES. THIS ROUTINE SELECTS THE APPROPRIATE
048620,000058: # AGC DATA TO BE TRANSMITTED DOWNLINK AND LOADS IT INTO OUTPUT
048621,000059: # CHANNELS 34 AND 35. THE INFORMATION IS THEN GATED OUT FROM THE
048622,000060: # LGC IN SERIAL FASHION.
048623,000061:
048624,000062: # THIS PROGRAM IS CODED FOR A 2 SECOND DOWNLIST. SINCE DOWNRUPTS
048625,000063: # OCCUR EVERY 20 MS AND 2 AGC COMPUTER WORDS CAN BE PLACED IN
048626,000064: # CHANNELS 34 AND 35 DURING EACH DOWNRUPT THE PROGRAM IS CAPABLE
048627,000065: # OF SENDING 200 AGC WORDS EVERY 2 SECONDS.
048628,000066:
048629,000067: # CALLING SEQUENCE - NONE
048630,000068: # PROGRAM IS ENTERED VIA TCF DODOWNTM WHICH IS EXECUTED AS A
048631,000069: # RESULT OF A DOWNRUPT. CONTROL IS RETURNED VIA TCF RESUME WHICH
048632,000070: # IN EFFECT IS A RESUME.
048633,000071:
048634,000072: # SUBROUTINES CALLED - NONE
048635,000073:
048636,000074: # NORMAL EXIT MODE - TCF RESUME
048637,000075:
048638,000076: # ALARM OR ABORT EXIT MODE - NONE
048639,000077:
048640,000078: # RESTART PROTECTION:
048641,000079: # ON A FRESH START AND RESTART THE 'STARTSUB' SUBROUTINE WILL INITIALIZE THE DOWNLIST POINTER (ACTUALLY
048642,000080: # DNTMGOTO) TO THE BEGINNING OF THE CURRENT DOWNLIST (I.E. CURRENT CONTENTS OF DNLSTADR). THIS HAS THE
048643,000081: # EFFECT OF IGNORING THE REMAINDER OF THE DOWNLIST WHICH THE DOWN-TELEMETRY PROGRAM WAS WORKING ON WHEN
048644,000082: # THE RESTART (OR FRESH START) OCCURRED AND RESUME DOWN TELEMETRY FROM THE BEGINNING OF THE CURRENT
048645,000083: # DOWNLIST.
048646,000084:
048647,000085: # ALSO OF INTEREST IS THE FACT THAT ON A RESTART THE AGC WILL ZERO DOWNLINK CHANNELS 13, 34 AND 35.
048648,000086:
048649,000087: # DOWNLINK LIST SELECTION:
048650,000088: # THE APPROPRIATE DOWNLINK LISTS ARE SELECTED BY THE FOLLOWING:
048651,000089: # 1. FRESH START
048652,000090: # 2. V37EXXE WHERE XX = THE MAJOR MODE BEING SELECTED.
048653,000091: # 3. UPDATE PROGRAM (P27)
048654,000092: # 4. NON-V37 SELECTABLE TYPE PROGRAMS (E.G. AGS INITIALIZATION (SUNDANCE, LUMINARY) AND P61-P62
048655,000093: # TRANSITION (COLOSSUS) ETC.).
048656,000094:
048657,000095: # DOWNLINK LIST RULES AND LIMITATIONS:
048658,000096: # READ SECTION(S) WHICH FOLLOW 'DEBRIS' WRITEUP.
048659,000097:
048660,000098: # OUTPUT - EVERY 2 SECONDS 100 DOUBLE PRECISION WORDS (I.E. 200 LGC
048661,000099: # COMPUTER WORDS) ARE TRANSMITTED VIA DOWNLINK.
048662,000100:
048663,000101: # ERASABLE INITIALIZATION REQUIRED - NONE
048664,000102: # 'DNTMGOTO' AND 'DNLSTADR' ARE INITIALIZED BY THE FRESH START PROGRAM.
048665,000103:
048666,000104: # DEBRIS (ERASABLE LOCATIONS DESTROYED BY THIS PROGRAM) -
048667,000105: # LDATALST, DNTMBUFF TO DNTMBUFF +21D, TMINDEX, DNQ.
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Page 1094 No source on this page of the original assembly listing. |
048670,000108:
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Page 1095 |
048672,000110: # DODOWNTM IS ENTERED EVERY 20 MS BY AN INTERRUPT TRIGGERED BY THE
048673,000111: # RECEIPT OF AN ENDPULSE FROM THE SPACECRAFT TELEMETRY PROGRAMMER.
048674,000112:
048675,000113: # NOTES REGARDING DOWNLINK LISTS ASSOCIATED WITH THIS PROGRAM:
048676,000114: # 1. DOWNLISTS. - DOWNLISTS MUST BE COMPILED IN THE SAME BANK AS THE
048677,000115: # DOWN-TELEMETRY PROGRAM. THIS IS DONE FOR EASE OF CODING, FASTER
048678,000116: # EXECUTION.
048679,000117: # 2. EACH DOWNLINK LIST CONSISTS OF A CONTROL LIST AND A NUMBER OF
048680,000118: # SUBLISTS.
048681,000119: # 3. A SUBLIST REFERS TO A SNAPSHOT OR DATA COMMON TO THE SAME OR OTHER
048682,000120: # DOWNLINK LISTS. ANY SUBLIST CONTAINING COMMON DATA NEEDS TO BE
048683,000121: # CODED ONLY ONCE FOR THE APPLICABLE DOWNLINK LISTS.
048684,000122: # 4. SNAPSHOT SUBLISTS REFER SPECIFICALLY TO HOMOGENOUS DATA WHICH MUST BE
048685,000123: # SAVED IN A BUFFER DURING ONE DOWNRUPT.
048686,000124: # 5. THE 1DNADR FOR THE 1ST WORD OF SNAPSHOT DATA IS FOUND AT THE END
048687,000125: # OF EACH SNAPSHOT SUBLIST, SINCE THE PROGRAM CODING SENDS THIS DP WORD
048688,000126: # IMMEDIATELY AFTER STORING THE OTHERS IN THE SNAPSHOT BUFFER.
048689,000127: # 6. ALL LISTS ARE COMBINATIONS OF CODED ERASABLE ADDRESS CONSTANTS
048690,000128: # CREATED FOR THE DOWNLIST PROGRAM.
048691,000129: # A. 1DNADR 1-WORD DOWNLIST ADDRESS.
048692,000130: # SAME AS ECADR, BUT USED WHEN THE WORD ADDRESSED IS THE LEFT
048693,000131: # HALF OF A DOUBLE-PRECISION WORD FOR DOWN TELEMETRY.
048694,000132: # B. 2DNADR - 6DNADR N-WORD DOWNLIST ADDRESS, N = 2 - 6.
048695,000133: # SAME AS 1DNADR, BUT WITH THE 4 UNUSED BITS OF THE ECADR FORMAT
048696,000134: # FILLED IN WITH 0001-0101. USED TO POINT TO A LIST OF N DOUBLE-
048697,000135: # PRECISION WORDS, STORED CONSECUTIVELY, FOR DOWN TELEMETRY.
048698,000136: # C. DNCHAN DOWNLIST CHANNEL ADDRESS.
048699,000137: # SAME AS 1DNADR, BUT WITH PREFIX BITS 0111. USED TO POINT TO
048700,000138: # A PAIR OF CHANNELS FOR DOWN TELEMETRY.
048701,000139: # D. DNPTR DOWN TELEMETRY SUBLIST POINTER.
048702,000140: # SAME AS CAF BUT TAGGED AS A CONSTANT. USED IN CONTROL LIST TO POINT TO A SUBLIST.
048703,000141: # CAUTION --- A DNPTR CANNOT BE USED IN A SUBLIST.
048704,000142: # 7. THE WORD ORDER CODE IS SET TO ZERO AT THE BEGINNING OF EACH DOWNLIST (I.E. CONTROL LIST) AND WHEN
048705,000143: # A '1DNADR TIME2' IS DETECTED IN THE CONTROL LIST (ONLY).
048706,000144: # 8. IN THE SNAPSHOT SUBLIST ONLY, THE DNADR'S CANNOT POINT TO THE FIRST WORD OF ANY EBANK.
048707,000145:
048708,000146: # DOWNLINK LIST RESTRICTIONS:
048709,000147: # (THE FOLLOWING POINTS MAY BE LISTED ELSEWHERE BUT ARE LISTED HERE SO IT IS CLEAR THAT THESE THINGS CANNOT BE
048710,000148: # DONE)
048711,000149: # 1. SNAPSHOT DOWNLIST:
048712,000150: # (A) CANNOT CONTAIN THE FOLLOWING ECADRS (I.E. 1DNADR'S): 0, 400, 1000, 1400, 2000, 2400, 3000, 3400.
048713,000151: # (B) CAN CONTAIN ONLY 1DNADR'S
048714,000152: # 2. ALL DOWNLINKED DATA (EXCEPT CHANNELS) IS PICKED UP BY A <DCA<SO DOWNLINK LISTS CANNOT CONTAIN THE
048715,000153: # EQUIVALENT OF THE FOLLOWING ECADRS (I.E. IDNADRS): 377, 777, 1377, 1777, 2377, 27777, 3377, 3777.
048716,000154: # (NOTE: THE TERM EQUIVALENT ' MEANT THAT THE IDNADR TO 6DNADR WILL BE PROCESSED LIKE 1 TO 6 ECADRS)
048717,000155: # 3. CONTROL LISTS AND SUBLISTS CANNOT HAVE ENTRIES = OCTAL 00000 OR OCTAL 77777
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Page 1096 |
048719,000157: # 4. THE '1DNADR TIME2' WHICH WILL CAUSE THE DOWNLINK PROGRAM TO SET THE WORDER CODE TO 3 MUST APPEAR IN THE
048720,000158: # CONTROL SECTION OF THE DOWNLIST.
048721,000159: # 5. 'DNCHAN 0' CANNOT BE USED.
048722,000160: # 6. 'DNPTR 0' CANNOT BE USED.
048723,000161: # 7. DNPTR CANNOT APPEAR IN A SUBLIST.
048724,000162:
048725,000163: # EBANK SETTINGS
048726,000164: # IN THE PROCESS OF SETTING THE EBANK (WHEN PICKING UP DOWNLINK DATA) THE DOWN TELEMETRY PROGRAM PUTS
048727,000165: # 'GARBAGE' INTO BITS15-12 OF EBANK. HUGH BLAIR-SMITH WARNS US THAT BITS15-12 OF EBANK MAY BECOME
048728,000166: # SIGNIFICANT SOMEDAY IN THE FUTURE. IF/WHEN THAT HAPPENS, THE PROGRAM SHOULD INSURE (BY MASKING ETC.)
048729,000167: # THAT BITS 15-12 OF EBANK ARE ZERO.
048730,000168:
048731,000169: # INITIALIZATION REQUIRED - TO INTERRUPT CURRENT LIST AND START A NEW ONE..
048732,000170: # 1. ADRES OF DOWNLINK LIST INTO DNLSTADR
048733,000171: # 2. NEGONE INTO SUBLIST
048734,000172: # 3. NEGONE INTO DNECADR
048735,000173:
048736,000174: 22,3510 BANK 22
048737,000175: 05,2000 SETLOC DOWNTELM
048738,000176: 05,2000 BANK
048739,000177:
048740,000178: 05,3521 0340 EBANK= DNTMBUFF
048741,000179:
048742,000180: 05,3521 COUNT 05/DPROG
048743,000181:
048744,000182: 05,3521 54016 DODOWNTM TS BANKRUPT
048745,000183: 05,3522 00006 EXTEND
048746,000184: 05,3523 22012 QXCH QRUPT # SAVE Q
048747,000185: 05,3524 35011 CA BIT7 # SET WORD ORDER CODE TO 1. EXCEPTION- AT
048748,000186: 05,3525 00006 EXTEND # THE BEGINNING OF EACH LIST THE WORD
048749,000187: 05,3526 05013 WOR CHAN13 # CODE WILL BE SET BACK TO 0.
048750,000188: 05,3527 00335 TC DNTMGOTO # GOTO APPROPRIATE PHASE OF PROGRAM
048751,000189:
048752,000190: 05,3530 37716 DNPHASE1 CA NEGONE # INITIALIZE ALL CONTROL WORDS
048753,000191: 05,3531 54337 TS SUBLIST # WORDS TO MINUS ONE
048754,000192: 05,3532 54336 TS DNECADR
048755,000193: 05,3533 33653 CA LDNPHAS2 # SET DNTMGOTO =O ALL SUBSEQUENT DOWNRUPTS
048756,000194: 05,3534 54335 TS DNTMGOTO # GO TO DNPHASE2
048757,000195: 05,3535 13551 TCF NEWLIST
048758,000196: 05,3536 10336 DNPHASE2 CCS DNECADR # SENDING OF DATA IN PROGRESS
048759,000197: 05,3537 03666 DODNADR TC FETCH2WD # YES - THEN FETCH THE NEXT 2 SP WORDS
048760,000198: 05,3540 77753 MINTIME2 -1DNADR TIME2 # NEGATIVE OF TIME2 1DNADR
048761,000199: 05,3541 13542 TCF +1 # (ECADR OF 3776 + 74001 = 77777)
048762,000200:
048763,000201: 05,3542 10337 CCS SUBLIST # IS THE SUBLIST IN CONTROL
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Page 1097 |
048765,000203: 05,3543 13701 TCF NEXTINSL # YES
048766,000204: 05,3544 74001 DNADRDCR OCT 74001 # DNADR COUNT AND ECADR DECREMENTER
048767,000205:
048768,000206: 05,3545 30334 CHKLIST CA CTLIST
048769,000207: 05,3546 00006 EXTEND
048770,000208: 05,3547 63551 BZMF NEWLIST # IT WILL BE NEGATIVE AT END OF LIST
048771,000209: 05,3550 13556 TCF NEXTINCL
048772,000210: 05,3551 50332 NEWLIST INDEX DNLSTCOD
048773,000211: 05,3552 32335 CA DNTABLE # INITIALIZE CTLIST WITH
048774,000212: 05,3553 54334 TS CTLIST # STARTING ADDRESS OF NEW LIST
048775,000213: 05,3554 40332 CS DNLSTCOD
048776,000214: 05,3555 13771 TCF SENDID +3
048777,000215: 05,3556 50334 NEXTINCL INDEX CTLIST
048778,000216: 05,3557 30000 CA 0
048779,000217: 05,3560 10000 CCS A
048780,000218: 05,3561 24334 INCR CTLIST # SET POINTER TO PICK UP NEXT CTLIST WORD
048781,000219: 05,3562 13566 TCF +4 # ON NEXT ENTRY TO PROG. (A SHOULD NOT =0)
048782,000220: 05,3563 56334 XCH CTLIST # SET CTLIST TO NEGATIVE AND PLACE(CODING)
048783,000221: 05,3564 40000 COM # UNCOMPLEMENTED DNADR INTO A. (FOR LA)
048784,000222: 05,3565 56334 XCH CTLIST # (ST IN )
048785,000223: 05,3566 24000 +4 INCR A # (CTLIST)
048786,000224: 05,3567 54336 TS DNECADR # SAVE DNADR
048787,000225: 05,3570 63540 AD MINTIME2 # TEST FOR TIME2 (NEG. OF ECADR)
048788,000226: 05,3571 10000 CCS A
048789,000227: 05,3572 13576 TCF SETWO +1 # DON'T SET WORD ORDER CODE
048790,000228: 05,3573 47777 MINB1314 OCT 47777 # MINUS BIT 13 AND 14 (CAN'T GET HERE)
048791,000229: 05,3574 13576 TCF SETWO +1 # DON'T SET WORD ORDER CODE
048792,000230: 05,3575 03620 SETWO TC WOZERO # GO SET WORD ORDER CODE TO ZERO.
048793,000231: 05,3576 30336 +1 CA DNECADR # RELOAD A WITH THE DNADR.
048794,000232: 05,3577 63573 +2 AD MINB1314 # IS THIS A REGULAR DNADR?
048795,000233: 05,3600 00006 EXTEND
048796,000234: 05,3601 63666 BZMF FETCH2WD # YES. (A MUST NEVER BE ZERO)
048797,000235: 05,3602 67710 AD MINB12 # NO- IS IT A POINTER (DNPTR) OR A
048798,000236: 05,3603 00006 EXTEND # CHANNEL(DNCHAN)
048799,000237: 05,3604 63624 BZMF DODNPTR # IT'S A POINTER. (A MUST NEVER BE ZERO)
048800,000238:
048801,000239: 05,3605 00006 DODNCHAN TC 6 # (EXECUTED AS EXTEND) IT S A CHANNEL
048802,000240: 05,3606 50336 INDEX DNECADR
048803,000241: 05,3607 44000 INDEX 0 -4000 # (EXECUTED AS READ)
048804,000242: 05,3610 54001 TS L
048805,000243: 05,3611 00006 TC 6 # (EXECUTED AS EXTEND)
048806,000244: 05,3612 50336 INDEX DNECADR
048807,000245: 05,3613 43777 INDEX 0 -4001 # (EXECUTED AS READ)
048808,000246: 05,3614 54336 TS DNECADR # SET DNECADR
048809,000247: 05,3615 37716 CA NEGONE # TO MINUS
048810,000248: 05,3616 56336 XCH DNECADR # WHILE PRESERVING A.
048811,000249: 05,3617 13714 TCF DNTMEXIT # GO SEND CHANNELS
048812,000250:
048813,000251: 05,3620 45011 WOZERO CS BIT7
048814,000252: 05,3621 00006 EXTEND
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Page 1098 |
048816,000254: 05,3622 03013 WAND CHAN13 # SET WORD ORDER CODE TO ZERO
048817,000255: 05,3623 00002 TC Q # RETURN TO CALLER
048818,000256:
048819,000257: 05,3624 50336 DODNPTR INDEX DNECADR # DNECADR CONTAINS ADRES OF SUBLIST
048820,000258: 05,3625 00000 0 0 # CLEAR AND ADD LIST ENTRY INTO A.
048821,000259: 05,3626 10000 CCS A # IS THIS A SNAPSHOT SUBLIST
048822,000260: 05,3627 30336 CA DNECADR # NO, IT IS A REGULAR SUBLIST.
048823,000261: 05,3630 13700 TCF DOSUBLST # A MUST NOT BE ZERO.
048824,000262:
048825,000263: 05,3631 56336 XCH DNECADR # YES, IT IS A SNAPSHOT SUBLIST.
048826,000264: 05,3632 54337 TS SUBLIST # C(DNECADR) INTO SUBLIST
048827,000265: 05,3633 35021 CAF ZERO # A INTO A
048828,000266: 05,3634 56336 XCH TMINDEX # (NOTE.. TMINDEX = DNECADR)
048829,000267:
048830,000268: # THE FOLLOWING CODING (FROM SNAPLOOP TO SNAPEND) IS FOR THE PURPOSE OF TAKING A SNAPSHOT OF 12 DP REGISTERS.
048831,000269: # THIS IS DONE BY SAVING 11 DP REGISTERS IN DNTMBUFF AND SENDING THE FIRST DP WORD IMMEDIATELY.
048832,000270: # THE SNAPSHOT PROCESSING IS THE MOST TIME CONSUMING AND THEREFORE THE CODING AND LIST STRUCTURE WERE DESIGNED
048833,000271: # TO MINIMIZE TIME. THE TIME OPTIMIZATION RESULTS IN RULES UNIQUE TO THE SNAPSHOT PORTION OF THE DOWNLIST.
048834,000272: # THESE RULES ARE ......
048835,000273: # 1. ONLY 1DNADR'S CAN APPEAR IN THE SNAPSHOT SUBLIST
048836,000274: # 2. THE 1DNADR'S CANNOT REFER TO THE FIRST LOCATION IN ANY BANK.
048837,000275:
048838,000276: 05,3635 54003 SNAPLOOP TS EBANK # SET EBANK
048839,000277: 05,3636 74373 MASK LOW8 # ISOLATE RELATIVE ADDRESS
048840,000278: 05,3637 00006 EXTEND
048841,000279: 05,3640 50000 INDEX A
048842,000280: 05,3641 E3,1401 EBANK= 1401
048843,000281: 05,3641 31402 DCA 1401 # PICK UP 2 SNAPSHOT WORDS.
048844,000282: 05,3642 0340 EBANK= DNTMBUFF
048845,000283: 05,3642 50336 INDEX TMINDEX
048846,000284: 05,3643 52341 DXCH DNTMBUFF # STORE 2 SNAPSHOT WORDS IN BUFFER
048847,000285: 05,3644 24336 INCR TMINDEX # SET BUFFER INDEX FOR NEXT 2 WORDS.
048848,000286: 05,3645 24336 INCR TMINDEX
048849,000287: 05,3646 24337 SNAPAGN INCR SUBLIST # SET POINTER TO NEXT 2 WORDS OF SNAPSHOT
048850,000288: 05,3647 50337 INDEX SUBLIST
048851,000289: 05,3650 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
048852,000290: 05,3651 10000 CCS A # TEST FOR LAST TWO WORDS OF SNAPSHOT.
048853,000291: 05,3652 13635 TCF SNAPLOOP # NOT LAST TWO.
048854,000292: 05,3653 03536 LDNPHAS2 GENADR DNPHASE2
048855,000293: 05,3654 54337 TS SUBLIST # YES, LAST. SAVE A.
048856,000294: 05,3655 37716 CA NEGONE # SET DNECADR AND
048857,000295: 05,3656 54336 TS DNECADR # SUBLIST POINTERS
048858,000296: 05,3657 56337 XCH SUBLIST # TO NEGATIVE VALUES.
048859,000297: 05,3660 54003 TS EBANK
048860,000298: 05,3661 74373 MASK LOW8
048861,000299: 05,3662 00006 EXTEND
048862,000300: 05,3663 50000 INDEX A
048863,000301: 05,3664 E3,1401 EBANK= 1401
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Page 1099 |
048865,000303: 05,3664 31402 DCA 1401 # PICK UP FIRST 2 WORDS OF SNAPSHOT.
048866,000304: 05,3665 0340 EBANK= DNTMBUFF
048867,000305: 05,3665 13714 SNAPEND TCF DNTMEXIT # NOW GO SEND THEM.
048868,000306:
048869,000307: 05,3666 30336 FETCH2WD CA DNECADR
048870,000308: 05,3667 54003 TS EBANK # SET EBANK
048871,000309: 05,3670 74373 MASK LOW8 # ISOLATE RELATIVE ADDRESS
048872,000310: 05,3671 54001 TS L
048873,000311: 05,3672 33544 CA DNADRDCR # DECREMENT COUNT AND ECADR
048874,000312: 05,3673 26336 ADS DNECADR
048875,000313: 05,3674 00006 EXTEND
048876,000314: 05,3675 50001 INDEX L
048877,000315: 05,3676 E3,1400 EBANK= 1400
048878,000316: 05,3676 31401 DCA 1400 # PICK UP 2 DATA WORDS
048879,000317: 05,3677 0340 EBANK= DNTMBUFF
048880,000318: 05,3677 13714 TCF DNTMEXIT # NOW GO SEND THEM.
048881,000319:
048882,000320: 05,3700 54337 DOSUBLST TS SUBLIST # SET SUBLIST POINTER
048883,000321: 05,3701 50337 NEXTINSL INDEX SUBLIST
048884,000322: 05,3702 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
048885,000323: 05,3703 10000 CCS A # IS IT THE END OF THE SUBLIST
048886,000324: 05,3704 24337 INCR SUBLIST # NO-
048887,000325: 05,3705 13711 TCF +4
048888,000326: 05,3706 54337 TS SUBLIST # SAVE A.
048889,000327: 05,3707 37716 CA NEGONE # SET SUBLIST TO MINUS
048890,000328: 05,3710 56337 XCH SUBLIST # RETRIEVE A.
048891,000329: 05,3711 24000 +4 INCR A
048892,000330: 05,3712 54336 TS DNECADR # SAVE DNADR
048893,000331: 05,3713 13577 TCF SETWO +2 # GO USE COMMON CODING (PROBLEMS WOULD
048894,000332: # OCCUR IF THE PROGRAM ENCOUNTERED A
048895,000333: # DNPTR NOW)
048896,000334:
048897,000335: 05,3714 00006 DNTMEXIT EXTEND # DOWN-TELEMETRY EXIT
048898,000336: 05,3715 01034 WRITE DNTM1 # TO SEND A + L TO CHANNELS 34 + 35
048899,000337: 05,3716 30001 CA L # RESPECTIVELY
048900,000338: 05,3717 00006 TMEXITL EXTEND
048901,000339: 05,3720 01035 WRITE DNTM2
048902,000340: 05,3721 15333 TMRESUME TCF RESUME # EXIT TELEMETRY PROGRAM VIA RESUME.
048903,000341:
048904,000342: 05,3722 7710 MINB12 EQUALS -1/8
048905,000343: 05,3722 0336 DNECADR EQUALS TMINDEX
048906,000344: 05,3722 0334 CTLIST EQUALS LDATALST
048907,000345: 05,3722 0337 SUBLIST EQUALS DNQ
048908,000346:
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Page 1100 |
048910,000348: # SUBROUTINE NAME - DNDUMP
048911,000349:
048912,000350: # FUNCTIONAL DESCRIPTION - TO SEND (DUMP) ALL ERASABLE STORAGE 'N' TIMES.(N = 1 TO 4). BANKS ARE SENT ONE AT A TIME
048913,000351: # EACH BANK IS PRECEEDED BY AN ID WORD, SYNCH BITS, ECADR AND TIME1 FOLLOWED BY THE 256D WORDS OF EACH
048914,000352: # EBANK. EBANKS ARE DUMPED IN ORDER (I.E. EBANK 0 FIRST, THEN EBANK1 ETC.)
048915,000353:
048916,000354: # CALLING SEQUENCE- THE GROUND OR ASTRONAUT BY KEYING V74E CAN INITIALIZE THE DUMP.
048917,000355: # AFTER KEYING IN V74E THE CURRENT DOWNLIST WILL BE IMMEDIATELY TERMINATED AND THE DOWNLINK ERASABLE DUMP
048918,000356: # WILL BEGIN.
048919,000357:
048920,000358: # ONCE INITIATED THE DOWNLINK ERASABLE DUMP CAN BE TERMINATED (AND INTERRUPTED DOWNLIST REINSTATED) ONLY
048921,000359: # BY THE FOLLOWING:
048922,000360:
048923,000361: # 1. A FRESH START
048924,000362: # 2. COMPLETION OF ALL DOWNLINK DUMPS REQUESTED (ACCORDING TO BITS SET IN DUMPCNT). NOTE THAT DUMPCNT
048925,000363: # CAN BE ALTERED BY A V21N01.
048926,000364: # 3. AND INVOLUNTARILY BY A RESTART.
048927,000365:
048928,000366: # NORMAL EXIT MODE- TCF DNPHASE1
048929,000367:
048930,000368: # ALARM OR ABORT MODE- NONE
048931,000369:
048932,000370: # *SUBROUTINES CALLED- NONE.
048933,000371:
048934,000372: # ERASABLE INITIALIZATION REQUIRED-
048935,000373: # DUMPCNT OCT 20000 IF 4 COMPLETE ERASABLE DUMPS ARE DESIRED
048936,000374: # DUMPCNT OCT 10000 IF 2 COMPLETE ERASABLE DUMPS ARE DESIRED
048937,000375: # DUMPCNT OCT 04000 IF 1 COMPLETE ERASABLE DUMP IS DESIRED
048938,000376:
048939,000377: # DEBRIS- DUMPLOC, DUMPSW, DNTMGOTO, EBANK AND CENTRAL REGISTERS
048940,000378:
048941,000379: # TIMING- TIME (IN SECS) = ((NO.DUMPS)*(NO.EBANKS)*(WDSPEREBANK + NO.IDWDS)) / NO.WDSPERSEC
048942,000380: # TIME (IN SECS) = ( 4 )*( 8 )*( 256 + 4 ) / 100
048943,000381: # THUS TIME (IN SECS TO SEND DUMP OF ERASABLE 4 TIMES VIA DOWNLINK) = 83.2 SECONDS
048944,000382:
048945,000383: # STRUCTURE OF ONE EBANK AS IT IS SENT BY DOWNLINK PROGRAM-
048946,000384: # (REMINDER-THIS ONLY DESCRIBES ONE OF THE 8 EBANKS X 4 (DUMPS) = 32 EBANKS WHICH WILL BE SENT BY DNDUMP)
048947,000385:
048948,000386: # DOWNLIST W
048949,000387: # WORD TAKEN FROM CONTENTS OF EXAMPLE O COMMENTS
048950,000388: # 1 ERASID 0177X 0 DOWNLIST I.D. FOR DOWNLINK ERASABLE DUMP (X=7 CSM, 6 LM)
048951,000389: # 2 LOWIDCOD 77340 1 DOWNLINK SYNCH BITS. (SAME ONE USED IN ALL OTHER DOWNLISTS)
048952,000390: # 3 DUMPLOC 13400 1 (SEE NOTES ON DUMPLOC) 1 = 3RD ERAS DUMP, 3400=ECADR OF 5TH WD
048953,000391: # 4 TIME1 14120 1 TIME IN CENTISECONDS
048954,000392: # 5 FIRST WORD OF EBANK X 03400 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1400 (ECADR 3400)
048955,000393: # 6 2ND WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1401 (ECADR 3401)
048956,000394: # 7 3RD WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1402 (ECADR 3402)
048957,000395: # . 1
048958,000396: # . 1
048959,000397: # . 1
048960,000398: # 260D 256TH WORD OF EBANK X 03777 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1777 (ECADR 3777)
048961,000399:
048962,000400: # NOTE- DUMPLOC CONTAINS THE COUNTER AND ECADR FOR EACH WORD BEING SENT.
048963,000401: # THE BIT STRUCTURE OF DUMPLOC IS FOLLOWS---
048964,000402: # X = NOT USED
048965,000403: # X ABC EEE RRRRRRRR ABC = ERASABLE DUMP COUNTER (I.E. ABC = 0,1,2 OR 3 WHICH MEANS THAT
048966,000404: # COMPLETE ERASABLE DUMP NUMBER 1,2,3 OR 4 RESPECTIVELY IS IN PROGRESS)
048967,000405: # EEE = EBANK BITS
048968,000406: # RRRRRRRR = RELATIVE ADDRESS WITHIN AN EBANK.
048969,000407:
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048971,000409: 05,3722 35021 DNDUMPI CA ZERO # INITIALIZE DOWNLINK
048972,000410: 05,3723 54336 TS DUMPLOC # ERASABLE DUMP
048973,000411: 05,3724 03766 +2 TC SENDID # GO SEND ID AND SYNCH BITS
048974,000412: 05,3725 33734 CA LDNDUMP1 # SET DNTMGOTO
048975,000413: 05,3726 54335 TS DNTMGOTO # TO LOCATION FOR NEXT PASS
048976,000414: 05,3727 30025 CA TIME1 # PLACE TIME1
048977,000415: 05,3730 56001 XCH L # INTO L
048978,000416: 05,3731 30336 CA DUMPLOC # AND ECADR OF THIS EBANK INTO A
048979,000417: 05,3732 13714 TCF DNTMEXIT # SEND DUMPLOC AND TIME1
048980,000418:
048981,000419: 05,3733 03735 LDNDUMP ADRES DNDUMP
048982,000420: 05,3734 03750 LDNDUMP1 ADRES DNDUMP1
048983,000421:
048984,000422: 05,3735 35016 DNDUMP CA TWO # INCREMENT ECADR IN DUMPLOC
048985,000423: 05,3736 26336 ADS DUMPLOC # TO NEXT DP WORD TO BE
048986,000424: 05,3737 74373 MASK LOW8 # DUMPED AND SAVE IT.
048987,000425: 05,3740 10000 CCS A # IS THIS THE BEGINNING OF A NEW EBANK
048988,000426: 05,3741 13752 TCF DNDUMP2 # NO- THEN CONTINUE DUMPING
048989,000427: 05,3742 30336 CA DUMPLOC # YES- IS THIS THE END OF THE
048990,000428: 05,3743 70333 MASK DUMPCNT # N TH(N = 1 TO 4) COMPLETE ERASABLE
048991,000429: 05,3744 77671 MASK PRIO34 # DUMP(BIT14 FOR 4, BIT13 FOR 2 OR BIT12
048992,000430: 05,3745 10000 CCS A # FOR 1 COMPLETE ERASABLE DUMP(S)).
048993,000431: 05,3746 13530 TCF DNPHASE1 # YES- START SENDING INTERRUPTED DOWNLIST
048994,000432: # AGAIN
048995,000433: 05,3747 13724 TCF DNDUMPI +2 # NO- GO BACK AND INITIALIZE NEXT BANK
048996,000434:
048997,000435: 05,3750 33733 DNDUMP1 CA LDNDUMP # SET DNTMGOTO
048998,000436: 05,3751 54335 TS DNTMGOTO # FOR WORDS 3 TO 256D OF CURRENT EBANK
048999,000437:
049000,000438: 05,3752 30336 DNDUMP2 CA DUMPLOC
049001,000439: 05,3753 54003 TS EBANK # SET EBANK
049002,000440: 05,3754 74373 MASK LOW8 # ISOLATE RELATIVE ADDRESS.
049003,000441: 05,3755 54002 TS Q # (NOTE: MASK INSTRUCTION IS USED TO PICK
049004,000442: 05,3756 35020 CA NEG0 # UP ERASABLE REGISTERS SO THAT EDITING
049005,000443: 05,3757 54001 TS L # REGISTERS 20-23 WILL NOT BE ALTERED.)
049006,000444: 05,3760 50002 INDEX Q
049007,000445: 05,3761 E3,1400 EBANK= 1400 # PICK UP LOW ORDER REGISTER OF PAIR
049008,000446: 05,3761 71401 MASK 1401 # OF ERASABLE REGISTERS.
049009,000447: 05,3762 56001 XCH L
049010,000448: 05,3763 50002 INDEX Q # PICK UP HIGH ORDER REGISTER OF PAIR
049011,000449: 05,3764 71400 MASK 1400 # OF ERASABLE REGISTERS.
049012,000450: 05,3765 0340 EBANK= DNTMBUFF
049013,000451: 05,3765 13714 TCF DNTMEXIT # GO SEND THEM
049014,000452:
049015,000453: 05,3766 00006 SENDID EXTEND # ** ENTRANCE USED BY ERASABLE DUMP PROG. **
049016,000454: 05,3767 22335 QXCH DNTMGOTO # SET DNTMGOTO SO NEXT TIME PROG WILL GO
049017,000455: 05,3770 35054 CAF ERASID # TO LOCATION FOLLOWING :TC SENDID:
049018,000456:
049019,000457: 05,3771 54001 TS L # ** ENTRANCE USED BY REGULAR DOWNLINK PG **
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049021,000459: 05,3772 03620 TC WOZERO # GO SET WORD ORDER CODE TO ZERO
049022,000460: 05,3773 32000 CAF LOWIDCOD # PLACE SPECIAL ID CODE INTO L
049023,000461: 05,3774 56001 XCH L # AND ID BACK INTO A
049024,000462: 05,3775 13714 TCF DNTMEXIT # SEND DOWNLIST ID CODE(S).
End of include-file DOWN-TELEMETRY_PROGRAM.agc. Parent file is MAIN.agc