Source Code
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This is a reconstructed version of Luminary 130, the initial AGC program released
in November 1969 for the Apollo 13 LM. Three more releases
followed before the flown revision was finally manufactured in February 1970.
This reconstruction was created from a previous transcription of the original listing of
Luminary 131, combined with Luminary memo #129 which describes the small difference
between the Luminary 130 and 131. The reconstructed source code was verified by
matching memory-bank checksums to those listed for Luminary 130 in drawing 2021152G.
In this source code, program comments from the original (Luminary 131) code are
prefixed with '#', while those added later by the Virtual AGC project are prefixed
with '##'.
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042295,000002: ## Copyright: Public domain.
042296,000003: ## Filename: DOWN-TELEMETRY_PROGRAM.agc
042297,000004: ## Purpose: A section of the reconstructed source code for Luminary 130.
042298,000005: ## This was the original program released for the Apollo 13 LM,
042299,000006: ## although several more revisions would follow. It has been
042300,000007: ## reconstructed from a listing of Luminary 131, from which it
042301,000008: ## differs on only two lines in P70-P71. The difference is
042302,000009: ## described in detail in Luminary memo #129, which was used
042303,000010: ## to perform the reconstruction. This file is intended to be a
042304,000011: ## faithful reconstruction, except that the code format has been
042305,000012: ## changed to conform to the requirements of the yaYUL assembler
042306,000013: ## rather than the original YUL assembler.
042307,000014: ## Reference: pp. 982-991
042308,000015: ## Contact: Ron Burkey <info@sandroid.org>.
042309,000016: ## Website: www.ibiblio.org/apollo/index.html
042310,000017: ## Mod history: 05/29/03 RSB. Began transcribing.
042311,000018: ## 05/14/05 RSB Corrected website reference above.
042312,000019: ## 2010-08-24 JL Fixed page 995 number.
042313,000020: ## 2010-10-25 JL Indentation fixes.
042314,000021: ## 2017-01-06 RSB Page numbers now agree with those on the
042315,000022: ## original hardcopy, as opposed to the PDF page
042316,000023: ## numbers in 1701.pdf.
042317,000024: ## 2017-01-28 RSB Back-ported some comment-text fixes
042318,000025: ## identified from Luminary 69.
042319,000026: ## 2017-02-26 RSB Proofed comment text using octopus/ProoferComments.
042320,000027: ## 2017-03-01 RSB Fixed lingering typos.
042321,000028: ## 2017-03-13 RSB Comment-text fixes noted in proofing Luminary 116.
042322,000029: ## 2017-03-15 RSB Comment-text fixes identified in 5-way
042323,000030: ## side-by-side diff of Luminary 69/99/116/131/210.
042324,000031: ## 2018-09-04 MAS Copied from Luminary 131 for Luminary 130.
042325,000032:
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Page 982
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042327,000034: # PROGRAM NAME - DOWN TELEMETRY PROGRAM
042328,000035: # MOD NO. - 0 TO COMPLETELY REWRITE THE DOWN TELEMETRY PROGRAM AND DOWNLINK ERASABLE DUMP PROGRAM FOR THE
042329,000036: # PURPOSE OF SAVING APPROXIMATELY 150 WORDS OF CORE STORAGE.
042330,000037: # THIS CHANGE REQUIRES AN ENTIRELY NEW METHOD OF SPECIFYING DOWNLINK LISTS. REFER TO DOWNLINK
042331,000038: # LISTS LOG SECTION FOR MORE DETAILS. HOWEVER THIS CHANGE WILL NOT AFFECT THE GROUND PROCESSING
042332,000039: # OF DOWN TELEMETRY DATA.
042333,000040: # MOD BY - KILROY, SMITH, DEWITT
042334,000041: # DATE - 02 OCT 67
042335,000042: # AUTHORS - KILROY, SMITH, DEWITT, DEWOLF, FAGIN
042336,000043: # LOG SECTION - DOWN-TELEMETRY PROGRAM
042337,000044:
042338,000045: # FUNCTIONAL DESCRIPTION - THIS ROUTINE IS INITIATED BY TELEMETRY END
042339,000046: # PULSE FROM THE DOWNLINK TELEMETRY CONVERTER. THIS PULSE OCCURS
042340,000047: # AT 50 TIMES PER SEC (EVERY 20 MS) THEREFORE DODOWNTM IS
042341,000048: # EXECUTED AT THESE RATES. THIS ROUTINE SELECTS THE APPROPRIATE
042342,000049: # AGC DATA TO BE TRANSMITTED DOWNLINK AND LOADS IT INTO OUTPUT
042343,000050: # CHANNELS 34 AND 35. THE INFORMATION IS THEN GATED OUT FROM THE
042344,000051: # LGC IN SERIAL FASHION.
042345,000052:
042346,000053: # THIS PROGRAM IS CODED FOR A 2 SECOND DOWNLIST. SINCE DOWNRUPTS
042347,000054: # OCCUR EVERY 20 MS AND 2 AGC COMPUTER WORDS CAN BE PLACED IN
042348,000055: # CHANNELS 34 AND 35 DURING EACH DOWNRUPT THE PROGRAM IS CAPABLE
042349,000056: # OF SENDING 200 AGC WORDS EVERY 2 SECONDS.
042350,000057:
042351,000058: # CALLING SEQUENCE - NONE
042352,000059: # PROGRAM IS ENTERED VIA TCF DODOWNTM WHICH IS EXECUTED AS A
042353,000060: # RESULT OF A DOWNRUPT. CONTROL IS RETURNED VIA TCF RESUME WHICH
042354,000061: # IN EFFECT IS A RESUME.
042355,000062:
042356,000063: # SUBROUTINES CALLED - NONE
042357,000064:
042358,000065: # NORMAL EXIT MODE - TCF RESUME
042359,000066:
042360,000067: # ALARM OR ABORT EXIT MODE - NONE
042361,000068:
042362,000069: # RESTART PROTECTION:
042363,000070: # ON A FRESH START AND RESTART THE 'STARTSUB' SUBROUTINE WILL INITIALIZE THE DOWNLIST POINTER (ACTUALLY
042364,000071: # DNTMGOTO) TO THE BEGINNING OF THE CURRENT DOWNLIST (I.E. CURRENT CONTENTS OF DNLSTADR). THIS HAS THE
042365,000072: # EFFECT OF IGNORING THE REMAINDER OF THE DOWNLIST WHICH THE DOWN-TELEMETRY PROGRAM WAS WORKING ON WHEN
042366,000073: # THE RESTART (OR FRESH START) OCCURRED AND RESUME DOWN TELEMETRY FROM THE BEGINNING OF THE CURRENT
042367,000074: # DOWNLIST.
042368,000075:
042369,000076: # ALSO OF INTEREST IS THE FACT THAT ON A RESTART THE AGC WILL ZERO DOWNLINK CHANNELS 13, 34 AND 35.
042370,000077:
042371,000078: # DOWNLINK LIST SELECTION:
042372,000079: # THE APPROPRIATE DOWNLINK LISTS ARE SELECTED BY THE FOLLOWING:
042373,000080: # 1. FRESH START
042374,000081: # 2. V37EXXE WHERE XX = THE MAJOR MODE BEING SELECTED.
042375,000082: # 3. UPDATE PROGRAM (P27)
042376,000083: # 4. NON-V37 SELECTABLE TYPE PROGRAMS (E.G. AGS INITIALIZATION (SUNDANCE, LUMINARY) AND P61-P62
042377,000084: # TRANSITION(COLOSSUS) ETC.).
042378,000085:
042379,000086: # DOWNLINK LIST RULES AND LIMITATIONS:
042380,000087: # READ SECTION(S) WHICH FOLLOW 'DEBRIS' WRITEUP.
042381,000088:
042382,000089: # OUTPUT - EVERY 2 SECONDS 100 DOUBLE PRECISION WORDS (I.E. 200 LGC
042383,000090: # COMPUTER WORDS) ARE TRANSMITTED VIA DOWNLINK.
042384,000091:
042385,000092: # ERASABLE INITIALIZATION REQUIRED - NONE
042386,000093: # 'DNTMGOTO' AND 'DNLSTADR' ARE INITIALIZED BY THE FRESH START PROGRAM.
042387,000094:
042388,000095: # DEBRIS (ERASABLE LOCATIONS DESTROYED BY THIS PROGRAM) -
042389,000096: # LDATALST, DNTMBUFF TO DNTMBUFF +21D, TMINDEX, DNQ.
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Page 983
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042392,000099:
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Page 984
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042394,000101: # DODOWNTM IS ENTERED EVERY 20 MS BY AN INTERRUPT TRIGGERED BY THE
042395,000102: # RECEIPT OF AN ENDPULSE FROM THE SPACECRAFT TELEMETRY PROGRAMMER.
042396,000103:
042397,000104: # NOTES REGARDING DOWNLINK LISTS ASSOCIATED WITH THIS PROGRAM:
042398,000105: # 1. DOWNLISTS. - DOWNLISTS MUST BE COMPILED IN THE SAME BANK AS THE
042399,000106: # DOWN-TELEMETRY PROGRAM. THIS IS DONE FOR EASE OF CODING, FASTER
042400,000107: # EXECUTION.
042401,000108: # 2. EACH DOWNLINK LIST CONSISTS OF A CONTROL LIST AND A NUMBER OF
042402,000109: # SUBLISTS.
042403,000110: # 3. A SUBLIST REFERS TO A SNAPSHOT OR DATA COMMON TO THE SAME OR OTHER
042404,000111: # DOWNLINK LISTS. ANY SUBLIST CONTAINING COMMON DATA NEEDS TO BE
042405,000112: # CODED ONLY ONCE FOR THE APPLICABLE DOWNLINK LISTS.
042406,000113: # 4. SNAPSHOT SUBLISTS REFER SPECIFICALLY TO HOMOGENOUS DATA WHICH MUST BE
042407,000114: # SAVED IN A BUFFER DURING ONE DOWNRUPT.
042408,000115: # 5. THE 1DNADR FOR THE 1ST WORD OF SNAPSHOT DATA IS FOUND AT THE END
042409,000116: # OF EACH SNAPSHOT SUBLIST, SINCE THE PROGRAM CODING SENDS THIS DP WORD
042410,000117: # IMMEDIATELY AFTER STORING THE OTHERS IN THE SNAPSHOT BUFFER.
042411,000118: # 6. ALL LISTS ARE COMBINATIONS OF CODED ERASABLE ADDRESS CONSTANTS
042412,000119: # CREATED FOR THE DOWNLIST PROGRAM.
042413,000120: # A. 1DNADR 1-WORD DOWNLIST ADDRESS.
042414,000121: # SAME AS ECADR, BUT USED WHEN THE WORD ADDRESSED IS THE LEFT
042415,000122: # HALF OF A DOUBLE-PRECISION WORD FOR DOWN TELEMETRY.
042416,000123: # B. 2DNADR - 6DNADR N-WORD DOWNLIST ADDRESS, N = 2 - 6.
042417,000124: # SAME AS 1DNADR, BUT WITH THE 4 UNUSED BITS OF THE ECADR FORMAT
042418,000125: # FILLED IN WITH 0001-0101. USED TO POINT TO A LIST OF N DOUBLE-
042419,000126: # PRECISION WORDS, STORED CONSECUTIVELY, FOR DOWN TELEMETRY.
042420,000127: # C. DNCHAN DOWNLIST CHANNEL ADDRESS.
042421,000128: # SAME AS 1DNADR, BUT WITH PREFIX BITS 0111. USED TO POINT TO
042422,000129: # A PAIR OF CHANNELS FOR DOWN TELEMETRY.
042423,000130: # D. DNPTR DOWN TELEMETRY SUBLIST POINTER.
042424,000131: # SAME AS CAF BUT TAGGED AS A CONSTANT. USED IN CONTROL LIST TO POINT TO A SUBLIST.
042425,000132: # CAUTION--- A DNPTR CANNOT BE USED IN A SUBLIST.
042426,000133: # 7. THE WORD ORDER CODE IS SET TO ZERO AT THE BEGINNING OF EACH DOWNLIST (I.E. CONTROL LIST) AND WHEN
042427,000134: # A '1DNADR TIME2' IS DETECTED IN THE CONTROL LIST (ONLY).
042428,000135: # 8. IN THE SNAPSHOT SUBLIST ONLY, THE DNADR'S CANNOT POINT TO THE FIRST WORD OF ANY EBANK.
042429,000136:
042430,000137: # DOWNLINK LIST RESTRICTIONS:
042431,000138: # (THE FOLLOWING POINTS MAY BE LISTED ELSEWHERE BUT ARE LISTED HERE SO IT IS CLEAR THAT THESE THINGS CANNOT BE
042432,000139: # DONE)
042433,000140: # 1. SNAPSHOT DOWNLIST:
042434,000141: # (A) CANNOT CONTAIN THE FOLLOWING ECADRS (I.E. 1DNADR'S): 0, 400, 1000, 1400, 2000, 2400, 3000, 3400.
042435,000142: # (B) CAN CONTAIN ONLY 1DNADR'S
042436,000143: # 2. ALL DOWNLINKED DATA (EXCEPT CHANNELS) IS PICKED UP BY A <DCA<SO DOWNLINK LISTS CANNOT CONTAIN THE
042437,000144: # EQUIVALENT OF THE FOLLOWING ECADRS (I.E. IDNADRS): 377, 777, 1377, 1777, 2377, 27777, 3377, 3777.
042438,000145: # (NOTE: THE TERM EQUIVALENT ' MEANT THAT THE IDNADR TO 6DNADR WILL BE PROCESSED LIKE 1 TO 6 ECADRS)
042439,000146: # 3. CONTROL LISTS AND SUBLISTS CANNOT HAVE ENTRIES = OCTAL 00000 OR OCTAL 77777
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Page 985
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042441,000148: # 4. THE '1DNADR TIME2' WHICH WILL CAUSE THE DOWNLINK PROGRAM TO SET THE WORDER CODE TO 3 MUST APPEAR IN THE
042442,000149: # CONTROL SECTION OF THE DOWNLIST.
042443,000150: # 5. 'DNCHAN 0' CANNOT BE USED.
042444,000151: # 6. 'DNPTR 0' CANNOT BE USED.
042445,000152: # 7. DNPTR CANNOT APPEAR IN A SUBLIST.
042446,000153:
042447,000154: # EBANK SETTINGS
042448,000155: # IN THE PROCESS OF SETTING THE EBANK (WHEN PICKING UP DOWNLINK DATA) THE DOWN TELEMETRY PROGRAM PUTS
042449,000156: # 'GARBAGE' INTO BITS15-12 OF EBANK. HUGH BLAIR-SMITH WARNS US THAT BITS15-12 OF EBANK MAY BECOME
042450,000157: # SIGNIFICANT SOMEDAY IN THE FUTURE. IF/WHEN THAT HAPPENS, THE PROGRAM SHOULD INSURE (BY MASKING ETC.)
042451,000158: # THAT BITS 15-12 OF EBANK ARE ZERO.
042452,000159:
042453,000160: # INITIALIZATION REQUIRED - TO INTERRUPT CURRENT LIST AND START A NEW ONE..
042454,000161: # 1. ADRES OF DOWNLINK LIST INTO DNLSTADR
042455,000162: # 2. NEGONE INTO SUBLIST
042456,000163: # 3. NEGONE INTO DNECADR
042457,000164:
042458,000165: 22,3711 BANK 22
042459,000166: 05,2000 SETLOC DOWNTELM
042460,000167: 05,2000 BANK
042461,000168:
042462,000169: 05,3505 0340 EBANK= DNTMBUFF
042463,000170: 05,3505 COUNT* $$/DPROG
042464,000171: 05,3505 54016 DODOWNTM TS BANKRUPT
042465,000172: 05,3506 00006 EXTEND
042466,000173: 05,3507 22012 QXCH QRUPT # SAVE Q
042467,000174: 05,3510 34745 CA BIT7 # AT THE BEGINNING OF THE LIST THE WORD
042468,000175: 05,3511 00006 EXTEND # ORDER BIT WILL BE SET BACK TO ZERO.
042469,000176: 05,3512 02013 RAND CHAN13
042470,000177: 05,3513 10000 CCS A
042471,000178: 05,3514 00335 TC DNTMGOTO
042472,000179: 05,3515 06022 TC C13STALL
042473,000180: 05,3516 34745 CA BIT7
042474,000181: 05,3517 00006 EXTEND # SET WORD ORDER BIT TO 1 ONLY IF IT
042475,000182: 05,3520 05013 WOR CHAN13 # ALREADY ISN'T.
042476,000183: 05,3521 00335 TC DNTMGOTO # GOTO APPROPRIATE PHASE OF PROGRAM
042477,000184:
042478,000185: 05,2000 SETLOC DOWNTELM
042479,000186: 05,2000 BANK
042480,000187:
042481,000188: 05,3522 37752 DNPHASE1 CA NEGONE # INITIALIZE ALL CONTROL WORDS
042482,000189: 05,3523 54337 TS SUBLIST # WORDS TO MINUS ONE
042483,000190: 05,3524 54336 TS DNECADR
042484,000191: 05,3525 33652 CA LDNPHAS2 # SET DNTMGOTO =O ALL SUBSEQUENT DOWNRUPTS
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Page 986
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042486,000193: 05,3526 54335 TS DNTMGOTO # GO TO DNPHASE2
042487,000194: 05,3527 13543 TCF NEWLIST
042488,000195: 05,3530 10336 DNPHASE2 CCS DNECADR # SENDING OF DATA IN PROGRESS
042489,000196: 05,3531 03665 DODNADR TC FETCH2WD # YES - THEN FETCH THE NEXT 2 SP WORDS
042490,000197: 05,3532 77753 MINTIME2 -1DNADR TIME2 # NEGATIVE OF TIME2 1DNADR
042491,000198: 05,3533 13534 TCF +1 # (ECADR OF 3776 + 74001 = 77777)
042492,000199:
042493,000200: 05,3534 10337 CCS SUBLIST # IS THE SUBLIST IN CONTROL
042494,000201: 05,3535 13700 TCF NEXTINSL # YES
042495,000202: 05,3536 74001 DNADRDCR OCT 74001 # DNADR COUNT AND ECADR DECREMENTER
042496,000203:
042497,000204: 05,3537 30334 CHKLIST CA CTLIST
042498,000205: 05,3540 00006 EXTEND
042499,000206: 05,3541 63543 BZMF NEWLIST # IT WILL BE NEGATIVE AT END OF LIST
042500,000207: 05,3542 13550 TCF NEXTINCL
042501,000208: 05,3543 50333 NEWLIST INDEX DNLSTCOD
042502,000209: 05,3544 32441 CA DNTABLE # INITIALIZE CTLIST WITH
042503,000210: 05,3545 54334 TS CTLIST # STARTING ADDRESS OF NEW LIST
042504,000211: 05,3546 40333 CS DNLSTCOD
042505,000212: 05,3547 13767 TCF SENDID +3
042506,000213: 05,3550 50334 NEXTINCL INDEX CTLIST
042507,000214: 05,3551 30000 CA 0
042508,000215: 05,3552 10000 CCS A
042509,000216: 05,3553 24334 INCR CTLIST # SET POINTER TO PICK UP NEXT CTLIST WORD
042510,000217: 05,3554 13560 TCF +4 # ON NEXT ENTRY TO PROG. (A SHOULD NOT =0)
042511,000218: 05,3555 56334 XCH CTLIST # SET CTLIST TO NEGATIVE AND PLACE(CODING)
042512,000219: 05,3556 40000 COM # UNCOMPLEMENTED DNADR INTO A. (FOR LA)
042513,000220: 05,3557 56334 XCH CTLIST # (ST IN )
042514,000221: 05,3560 24000 +4 INCR A # (CTLIST)
042515,000222: 05,3561 54336 TS DNECADR # SAVE DNADR
042516,000223: 05,3562 63532 AD MINTIME2 # TEST FOR TIME2 (NEG. OF ECADR)
042517,000224: 05,3563 10000 CCS A
042518,000225: 05,3564 13570 TCF SETWO +1 # DON'T SET WORD ORDER CODE
042519,000226: 05,3565 47777 MINB1314 OCT 47777 # MINUS BIT 13 AND 14 (CAN'T GET HERE)
042520,000227: 05,3566 13570 TCF SETWO +1 # DON'T SET WORD ORDER CODE
042521,000228: 05,3567 03612 SETWO TC WOZERO # GO SET WORD ORDER CODE TO ZERO.
042522,000229: 05,3570 30336 +1 CA DNECADR # RELOAD A WITH THE DNADR.
042523,000230: 05,3571 63565 +2 AD MINB1314 # IS THIS A REGULAR DNADR?
042524,000231: 05,3572 00006 EXTEND
042525,000232: 05,3573 63665 BZMF FETCH2WD # YES. (A MUST NEVER BE ZERO)
042526,000233: 05,3574 67744 AD MINB12 # NO- IS IT A POINTER (DNPTR) OR A
042527,000234: 05,3575 00006 EXTEND # CHANNEL(DNCHAN)
042528,000235: 05,3576 63623 BZMF DODNPTR # IT'S A POINTER. (A MUST NEVER BE ZERO)
042529,000236:
042530,000237: 05,3577 00006 DODNCHAN TC 6 # (EXECUTED AS EXTEND) IT S A CHANNEL
042531,000238: 05,3600 50336 INDEX DNECADR
042532,000239: 05,3601 44000 INDEX 0 -4000 # (EXECUTED AS READ)
042533,000240: 05,3602 54001 TS L
042534,000241: 05,3603 00006 TC 6 # (EXECUTED AS EXTEND)
042535,000242: 05,3604 50336 INDEX DNECADR
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Page 987
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042537,000244: 05,3605 43777 INDEX 0 -4001 # (EXECUTED AS READ)
042538,000245: 05,3606 54336 TS DNECADR # SET DNECADR
042539,000246: 05,3607 37752 CA NEGONE # TO MINUS
042540,000247: 05,3610 56336 XCH DNECADR # WHILE PRESERVING A.
042541,000248: 05,3611 13713 TCF DNTMEXIT # GO SEND CHANNELS
042542,000249:
042543,000250: 05,3612 00006 WOZERO EXTEND
042544,000251: 05,3613 23265 QXCH C13QSAV
042545,000252: 05,3614 22070 LXCH RUPTREG1
042546,000253: 05,3615 06022 TC C13STALL
042547,000254:
042548,000255: 05,3616 22070 LXCH RUPTREG1
042549,000256: 05,3617 44745 CS BIT7
042550,000257: 05,3620 00006 EXTEND
042551,000258: 05,3621 03013 WAND CHAN13 # SET WORD ORDER CODE TO ZERO
042552,000259: 05,3622 01265 TC C13QSAV
042553,000260:
042554,000261: 05,3623 50336 DODNPTR INDEX DNECADR # DNECADR CONTAINS ADRES OF SUBLIST
042555,000262: 05,3624 00000 0 0 # CLEAR AND ADD LIST ENTRY INTO A.
042556,000263: 05,3625 10000 CCS A # IS THIS A SNAPSHOT SUBLIST
042557,000264: 05,3626 30336 CA DNECADR # NO, IT IS A REGULAR SUBLIST.
042558,000265: 05,3627 13677 TCF DOSUBLST # A MUST NOT BE ZERO.
042559,000266:
042560,000267: 05,3630 56336 XCH DNECADR # YES, IT IS A SNAPSHOT SUBLIST.
042561,000268: 05,3631 54337 TS SUBLIST # C(DNECADR) INTO SUBLIST
042562,000269: 05,3632 34755 CAF ZERO # A INTO A
042563,000270: 05,3633 56336 XCH TMINDEX # (NOTE.. TMINDEX = DNECADR)
042564,000271:
042565,000272: # THE FOLLOWING CODING (FROM SNAPLOOP TO SNAPEND) IS FOR THE PURPOSE OF TAKING A SNAPSHOT OF 12 DP REGISTERS.
042566,000273: # THIS IS DONE BY SAVING 11 DP REGISTERS IN DNTMBUFF AND SENDING THE FIRST DP WORD IMMEDIATELY.
042567,000274: # THE SNAPSHOT PROCESSING IS THE MOST TIME CONSUMING AND THEREFORE THE CODING AND LIST STRUCTURE WERE DESIGNED
042568,000275: # TO MINIMIZE TIME. THE TIME OPTIMIZATION RESULTS IN RULES UNIQUE TO THE SNAPSHOT PORTION OF THE DOWNLIST.
042569,000276: # THESE RULES ARE ......
042570,000277: # 1. ONLY 1DNADR'S CAN APPEAR IN THE SNAPSHOT SUBLIST
042571,000278: # 2. THE 1DNADR'S CANNOT REFER TO THE FIRST LOCATION IN ANY BANK.
042572,000279:
042573,000280: 05,3634 54003 SNAPLOOP TS EBANK # SET EBANK
042574,000281: 05,3635 74357 MASK LOW8 # ISOLATE RELATIVE ADDRESS
042575,000282: 05,3636 00006 EXTEND
042576,000283: 05,3637 50000 INDEX A
042577,000284: 05,3640 E3,1401 EBANK= 1401
042578,000285: 05,3640 31402 DCA 1401 # PICK UP 2 SNAPSHOT WORDS.
042579,000286: 05,3641 0340 EBANK= DNTMBUFF
042580,000287: 05,3641 50336 INDEX TMINDEX
042581,000288: 05,3642 52341 DXCH DNTMBUFF # STORE 2 SNAPSHOT WORDS IN BUFFER
042582,000289: 05,3643 24336 INCR TMINDEX # SET BUFFER INDEX FOR NEXT 2 WORDS.
042583,000290: 05,3644 24336 INCR TMINDEX
042584,000291: 05,3645 24337 SNAPAGN INCR SUBLIST # SET POINTER TO NEXT 2 WORDS OF SNAPSHOT
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Page 988
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042586,000293: 05,3646 50337 INDEX SUBLIST
042587,000294: 05,3647 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
042588,000295: 05,3650 10000 CCS A # TEST FOR LAST TWO WORDS OF SNAPSHOT.
042589,000296: 05,3651 13634 TCF SNAPLOOP # NOT LAST TWO.
042590,000297: 05,3652 03530 LDNPHAS2 GENADR DNPHASE2
042591,000298: 05,3653 54337 TS SUBLIST # YES, LAST. SAVE A.
042592,000299: 05,3654 37752 CA NEGONE # SET DNECADR AND
042593,000300: 05,3655 54336 TS DNECADR # SUBLIST POINTERS
042594,000301: 05,3656 56337 XCH SUBLIST # TO NEGATIVE VALUES.
042595,000302: 05,3657 54003 TS EBANK
042596,000303: 05,3660 74357 MASK LOW8
042597,000304: 05,3661 00006 EXTEND
042598,000305: 05,3662 50000 INDEX A
042599,000306: 05,3663 E3,1401 EBANK= 1401
042600,000307: 05,3663 31402 DCA 1401 # PICK UP FIRST 2 WORDS OF SNAPSHOT.
042601,000308: 05,3664 0340 EBANK= DNTMBUFF
042602,000309: 05,3664 13713 SNAPEND TCF DNTMEXIT # NOW GO SEND THEM.
042603,000310:
042604,000311: 05,3665 30336 FETCH2WD CA DNECADR
042605,000312: 05,3666 54003 TS EBANK # SET EBANK
042606,000313: 05,3667 74357 MASK LOW8 # ISOLATE RELATIVE ADDRESS
042607,000314: 05,3670 54001 TS L
042608,000315: 05,3671 33536 CA DNADRDCR # DECREMENT COUNT AND ECADR
042609,000316: 05,3672 26336 ADS DNECADR
042610,000317: 05,3673 00006 EXTEND
042611,000318: 05,3674 50001 INDEX L
042612,000319: 05,3675 E3,1400 EBANK= 1400
042613,000320: 05,3675 31401 DCA 1400 # PICK UP 2 DATA WORDS
042614,000321: 05,3676 0340 EBANK= DNTMBUFF
042615,000322: 05,3676 13713 TCF DNTMEXIT # NOW GO SEND THEM.
042616,000323:
042617,000324: 05,3677 54337 DOSUBLST TS SUBLIST # SET SUBLIST POINTER
042618,000325: 05,3700 50337 NEXTINSL INDEX SUBLIST
042619,000326: 05,3701 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
042620,000327: 05,3702 10000 CCS A # IS IT THE END OF THE SUBLIST
042621,000328: 05,3703 24337 INCR SUBLIST # NO -
042622,000329: 05,3704 13710 TCF +4
042623,000330: 05,3705 54337 TS SUBLIST # SAVE A.
042624,000331: 05,3706 37752 CA NEGONE # SET SUBLIST TO MINUS
042625,000332: 05,3707 56337 XCH SUBLIST # RETRIEVE A.
042626,000333: 05,3710 24000 +4 INCR A
042627,000334: 05,3711 54336 TS DNECADR # SAVE DNADR
042628,000335: 05,3712 13571 TCF SETWO +2 # GO USE COMMON CODING (PROBLEMS WOULD
042629,000336: # OCCUR IF THE PROGRAM ENCOUNTERED A
042630,000337: # DNPTR NOW)
042631,000338:
042632,000339: 05,3713 00006 DNTMEXIT EXTEND # DOWN-TELEMETRY EXIT
042633,000340: 05,3714 01034 WRITE DNTM1 # TO SEND A + L TO CHANNELS 34 + 35
042634,000341: 05,3715 30001 CA L # RESPECTIVELY
042635,000342: 05,3716 00006 TMEXITL EXTEND
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Page 989
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042637,000344: 05,3717 01035 WRITE DNTM2
042638,000345: 05,3720 15270 TMRESUME TCF RESUME # EXIT TELEMETRY PROGRAM VIA RESUME.
042639,000346:
042640,000347: 05,3721 7744 MINB12 EQUALS -1/8
042641,000348: 05,3721 0336 DNECADR EQUALS TMINDEX
042642,000349: 05,3721 0334 CTLIST EQUALS LDATALST
042643,000350: 05,3721 0337 SUBLIST EQUALS DNQ
042644,000351:
042645,000352: # MOD BY - DENSMORE - JUNE 1969 - ELIMINATE ERASABLE DUMP COUNT
042646,000353:
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Page 990
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042648,000355: # SUBROUTINE NAME - DNDUMP
042649,000356:
042650,000357: # FUNCTIONAL DESCRIPTION - TO SEND (DUMP) ALL 8 BANKS OF ERASABLE STORAGE TWICE. BANKS ARE SENT ONE AT A TIME
042651,000358: # EACH BANK IS PRECEEDED BY AN ID WORD, SYNCH BITS, ECADR AND TIME1 FOLLOWED BY THE 256D WORDS OF EACH
042652,000359: # EBANK. EBANKS ARE DUMPED IN ORDER (I.E. EBANK 0 FIRST, THEN EBANK1 ETC.)
042653,000360:
042654,000361: # CALLING SEQUENCE - THE GROUND OR ASTRONAUT BY KEYING V74E CAN INITIALIZE THE DUMP.
042655,000362: # AFTER KEYING IN V74E THE CURRENT DOWNLIST WILL BE IMMEDIATELY TERMINATED AND THE DOWNLINK ERASABLE DUMP
042656,000363: # WILL BEGIN.
042657,000364:
042658,000365: # ONCE INITIATED THE DOWNLINK ERASABLE DUMP CAN BE TERMINATED (AND INTERRUPTED DOWNLIST REINSTATED) ONLY
042659,000366: # BY THE FOLLOWING:
042660,000367:
042661,000368: # 1. A FRESH START
042662,000369: # 2. COMPLETION OF BOTH COMPLETE DUMPS
042663,000370: # 3. AND INVOLUNTARILY BY A RESTART.
042664,000371:
042665,000372: # NORMAL EXIT MODE - TCF DNPHASE1
042666,000373:
042667,000374: # ALARM OR ABORT MODE - NONE
042668,000375:
042669,000376: # *SUBROUTINES CALLED - NONE.
042670,000377:
042671,000378: # ERASABLE INITIALIZATION REQUIRED -
042672,000379: # NONE
042673,000380:
042674,000381: # DEBRIS - DUMPLOC, DUMPSW, DNTMGOTO, EBANK AND CENTRAL REGISTERS
042675,000382:
042676,000383: # TIMING - TIME (IN SECS) = ((NO.DUMPS)*(NO.EBANKS)*(WDSPEREBANK + NO.IDWDS)) / NO.WDSPERSEC
042677,000384: # TIME (IN SECS) = ( 4 )*( 8 )*( 256 + 4 ) / 100
042678,000385: # THUS TIME (IN SECS TO SEND DUMP OF ERASABLE 4 TIMES VIA DOWNLINK) = 83.2 SECONDS
042679,000386:
042680,000387: # STRUCTURE OF ONE EBANK AS IT IS SENT BY DOWNLINK PROGRAM -
042681,000388: # (REMINDER - THIS ONLY DESCRIBES ONE OF THE 8 EBANKS X 4 (DUMPS) = 32 EBANKS WHICH WILL BE SENT BY DNDUMP)
042682,000389:
042683,000390: # DOWNLIST W
042684,000391: # WORD TAKEN FROM CONTENTS OF EXAMPLE O COMMENTS
042685,000392: # 1 ERASID 0177X 0 DOWNLIST I.D. FOR DOWNLINK ERASABLE DUMP (X=7 CSM, 6 LM)
042686,000393: # 2 LOWIDCOD 77340 1 DOWNLINK SYNCH BITS. (SAME ONE USED IN ALL OTHER DOWNLISTS)
042687,000394: # 3 DUMPLOC 13400 1 (SEE NOTES ON DUMPLOC) 1 = 3RD ERAS DUMP, 3400=ECADR OF 5TH WD
042688,000395: # 4 TIME1 14120 1 TIME IN CENTISECONDS
042689,000396: # 5 FIRST WORD OF EBANK X 03400 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1400 (ECADR 3400)
042690,000397: # 6 2ND WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1401 (ECADR 3401)
042691,000398: # 7 3RD WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1402 (ECADR 3402)
042692,000399: # . 1
042693,000400: # . 1
042694,000401: # . 1
042695,000402: # 260D 256TH WORD OF EBANK X 03777 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1777 (ECADR 3777)
042696,000403:
042697,000404: # NOTE - DUMPLOC CONTAINS THE COUNTER AND ECADR FOR EACH WORD BEING SENT.
042698,000405: # THE BIT STRUCTURE OF DUMPLOC IS FOLLOWS---
042699,000406: # X = NOT USED
042700,000407: # X ABC EEE RRRRRRRR ABC = ERASABLE DUMP COUNTER (I.E. ABC = 0,1,2 OR 3 WHICH MEANS THAT
042701,000408: # COMPLETE ERASABLE DUMP NUMBER 1,2,3 OR 4 RESPECTIVELY IS IN PROGRESS)
042702,000409: # EEE = EBANK BITS
042703,000410: # RRRRRRRR = RELATIVE ADDRESS WITHIN AN EBANK.
042704,000411:
042705,000412: 05,3721 34755 DNDUMPI CA ZERO # INITIALIZE DOWNLINK
042706,000413: 05,3722 54336 TS DUMPLOC # ERASABLE DUMP
042707,000414: 05,3723 03764 +2 TC SENDID # GO SEND ID AND SYNCH BITS
042708,000415:
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042710,000417: 05,3724 33733 CA LDNDUMP1 # SET DNTMGOTO
042711,000418: 05,3725 54335 TS DNTMGOTO # TO LOCATION FOR NEXT PASS
042712,000419: 05,3726 30025 CA TIME1 # PLACE TIME1
042713,000420: 05,3727 56001 XCH L # INTO L
042714,000421: 05,3730 30336 CA DUMPLOC # AND ECADR OF THIS EBANK INTO A
042715,000422: 05,3731 13713 TCF DNTMEXIT # SEND DUMPLOC AND TIME1
042716,000423:
042717,000424: 05,3732 03734 LDNDUMP ADRES DNDUMP
042718,000425: 05,3733 03746 LDNDUMP1 ADRES DNDUMP1
042719,000426:
042720,000427: 05,3734 34752 DNDUMP CA TWO # INCREMENT ECADR IN DUMPLOC
042721,000428: 05,3735 26336 ADS DUMPLOC # TO NEXT DP WORD TO BE
042722,000429: 05,3736 74357 MASK LOW8 # DUMPED AND SAVE IT.
042723,000430: 05,3737 10000 CCS A # IS THIS THE BEGINNING OF A NEW EBANK
042724,000431: 05,3740 13750 TCF DNDUMP2 # NO - THEN CONTINUE DUMPING
042725,000432: 05,3741 30336 CA DUMPLOC # YES - IS THIS THE END OF THE
042726,000433: 05,3742 74737 MASK BIT13 # SECOND COMPLETE ERASABLE DUMP?
042727,000434: 05,3743 00006 EXTEND
042728,000435: 05,3744 13723 BZF DNDUMPI +2 # NO - GO BACK AND INITIALIZE NEXT BANK
042729,000436: 05,3745 13522 TCF DNPHASE1 # YES - SEND DOWNLIST AGAIN
042730,000437: 05,3746 33732 DNDUMP1 CA LDNDUMP # SET DNTMGOTO
042731,000438: 05,3747 54335 TS DNTMGOTO # FOR WORDS 3 TO 256D OF CURRENT EBANK
042732,000439:
042733,000440: 05,3750 30336 DNDUMP2 CA DUMPLOC
042734,000441: 05,3751 54003 TS EBANK # SET EBANK
042735,000442: 05,3752 74357 MASK LOW8 # ISOLATE RELATIVE ADDRESS.
042736,000443: 05,3753 54002 TS Q # (NOTE: MASK INSTRUCTION IS USED TO PICK
042737,000444: 05,3754 34754 CA NEG0 # UP ERASABLE REGISTERS SO THAT EDITING
042738,000445: 05,3755 54001 TS L # REGISTERS 20-23 WILL NOT BE ALTERED.)
042739,000446: 05,3756 50002 INDEX Q
042740,000447: 05,3757 E3,1400 EBANK= 1400 # PICK UP LOW ORDER REGISTER OF PAIR
042741,000448: 05,3757 71401 MASK 1401 # OF ERASABLE REGISTERS.
042742,000449: 05,3760 56001 XCH L
042743,000450: 05,3761 50002 INDEX Q # PICK UP HIGH ORDER REGISTER OF PAIR
042744,000451: 05,3762 71400 MASK 1400 # OF ERASABLE REGISTERS.
042745,000452: 05,3763 0340 EBANK= DNTMBUFF
042746,000453: 05,3763 13713 TCF DNTMEXIT # GO SEND THEM
042747,000454:
042748,000455: 05,3764 00006 SENDID EXTEND # ** ENTRANCE USED BY ERASABLE DUMP PROG. **
042749,000456: 05,3765 22335 QXCH DNTMGOTO # SET DNTMGOTO SO NEXT TIME PROG WILL GO
042750,000457: 05,3766 35011 CAF ERASID # TO LOCATION FOLLOWING :TC SENDID:
042751,000458:
042752,000459: 05,3767 54001 TS L # ** ENTRANCE USED BY REGULAR DOWNLINK PG **
042753,000460: 05,3770 03612 TC WOZERO # GO SET WORD ORDER CODE TO ZERO
042754,000461: 05,3771 32065 CAF LOWIDCOD # PLACE SPECIAL ID CODE INTO L
042755,000462: 05,3772 56001 XCH L # AND ID BACK INTO A
042756,000463: 05,3773 13713 TCF DNTMEXIT # SEND DOWNLIST ID CODE(S).
042757,000464:
End of include-file DOWN-TELEMETRY_PROGRAM.agc. Parent file is MAIN.agc