Notations on the program listing read, in part:
GAP: ASSEMBLE REVISION 116 OF AGC PROGRAM LUMINARY BY NASA 2021112-071 19:09 AUG. 11,1969Note 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 derive from a printout of Luminary 116 (the Apollo 12
Lunar Module guidance computer program), from the personal library of
original AGC developer Don Eyles, digitally photographed at archive.org,
financially sponsored by Ron Burkey, and transcribed to source code by a
team of volunteers. This colorized, syntax-highlighted form was created
by assembling that transcribed source code. Note that the full page images
are available on the
Virtual AGC project page at archive.org, while reduced-size images
are presented at the VirtualAGC project website. Report or fix any
transcription errors at
the Virtual AGC project code repository. Notations on the program listing read, in part: GAP: ASSEMBLE REVISION 116 OF AGC PROGRAM LUMINARY BY NASA 2021112-071 19:09 AUG. 11,1969Note that the date is the date of the printout, not the date of the program revision. |
042299,000002: ## Copyright: Public domain.
042300,000003: ## Filename: DOWN-TELEMETRY_PROGRAM.agc
042301,000004: ## Purpose: A section of Luminary revision 116.
042302,000005: ## It is part of the source code for the Lunar Module's (LM)
042303,000006: ## Apollo Guidance Computer (AGC) for Apollo 12.
042304,000007: ## This file is intended to be a faithful transcription, except
042305,000008: ## that the code format has been changed to conform to the
042306,000009: ## requirements of the yaYUL assembler rather than the
042307,000010: ## original YUL assembler.
042308,000011: ## Reference: pp. 980-989
042309,000012: ## Assembler: yaYUL
042310,000013: ## Contact: Ron Burkey <info@sandroid.org>.
042311,000014: ## Website: www.ibiblio.org/apollo/index.html
042312,000015: ## Mod history: 2017-01-22 MAS Created from Luminary 99.
042313,000016: ## 2017-01-31 RRB Updated for Luminary 116.
042314,000017: ## 2017-03-07 HG Fix operand O13QSAV --> C13QSAV
042315,000018: ## C13QSAV --> C13STALL
042316,000019: ## 2017-03-13 RSB Proofed comment text via 3-way diff vs
042317,000020: ## Luminary 99 and 132.
042318,000021: ## 2017-03-15 RSB Comment-text fixes identified in 5-way
042319,000022: ## side-by-side diff of Luminary 69/99/116/131/210.
042320,000023: ## 2017-03-19 HG Fix operand DNTMGCTC --> DNTMGOTO
042321,000024:
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Page 980 |
042323,000026: # PROGRAM NAME- DOWN TELEMETRY PROGRAM
042324,000027: # MOD NO.- 0 TO COMPLETELY REWRITE THE DOWN TELEMETRY PROGRAM AND DOWNLINK ERASABLE DUMP PROGRAM FOR THE
042325,000028: # PURPOSE OF SAVING APPROXIMATELY 150 WORDS OF CORE STORAGE.
042326,000029: # THIS CHANGE REQUIRES AN ENTIRELY NEW METHOD OF SPECIFYING DOWNLINK LISTS.REFER TO DOWNLINK
042327,000030: # LISTS LOG SECTION FOR MORE DETAILS. HOWEVER THIS CHANGE WILL NOT AFFECT THE GROUND PROCESSING
042328,000031: # OF DOWN TELEMETRY DATA.
042329,000032: # MOD BY- KILROY, SMITH, DEWITT
042330,000033: # DATE- 02 OCT 67
042331,000034: # AUTHORS- KILROY, SMITH, DEWITT, DEWOLF, FAGIN
042332,000035: # LOG SECTION- DOWN-TELEMETRY PROGRAM
042333,000036: # FUNCTIONAL DESCRIPTION- THIS ROUTINE IS INITIATED BY TELEMETRY END
042334,000037: # PULSE FROM THE DOWNLINK TELEMETRY CONVERTER. THIS PULSE OCCURS
042335,000038: # AT 50 TIMES PER SEC (EVERY 20 MS) THEREFORE DODOWNTM IS
042336,000039: # EXECUTED AT THESE RATES. THIS ROUTINE SELECTS THE APPROPRIATE
042337,000040: # AGC DATA TO BE TRANSMITTED DOWNLINK AND LOADS IT INTO OUTPUT
042338,000041: # CHANNELS 34 AND 35. THE INFORMATION IS THEN GATED OUT FROM THE
042339,000042: # LGC IN SERIAL FASHION.
042340,000043: # THIS PROGRAM IS CODED FOR A 2 SECOND DOWNLIST. SINCE DOWNRUPTS
042341,000044: # OCCUR EVERY 20 MS AND 2 AGC COMPUTER WORDS CAN BE PLACED IN
042342,000045: # CHANNELS 34 AND 35 DURING EACH DOWNRUPT THE PROGRAM IS CAPABLE
042343,000046: # OF SENDING 200 AGC WORDS EVERY 2 SECONDS.
042344,000047: # CALLING SEQUENCE- NONE
042345,000048: # PROGRAM IS ENTERED VIA TCF DODOWNTM WHICH IS EXECUTED AS A
042346,000049: # RESULT OF A DOWNRUPT. CONTROL IS RETURNED VIA TCF RESUME WHICH
042347,000050: # IN EFFECT IS A RESUME.
042348,000051: # SUBROUTINES CALLED- NONE
042349,000052: # NORMAL EXIT MODE- TCF RESUME
042350,000053: # ALARM OR ABORT EXIT MODE - NONE
042351,000054: # RESTART PROTECTION:
042352,000055: # ON A FRESH START AND RESTART THE 'STARTSUB' SUBROUTINE WILL INITIALIZE THE DOWNLIST POINTER (ACTUALLY
042353,000056: # DNTMGOTO) TO THE BEGINNING OF THE CURRENT DOWNLIST(I.E. CURRENT CONTENTS OF DNLSTADR). THIS HAS THE
042354,000057: # EFFECT OF IGNORING THE REMAINDER OF THE DOWNLIST WHICH THE DOWN-TELEMETRY PROGRAM WAS WORKING ON WHEN
042355,000058: # THE RESTART (OR FRESH START) OCCURRED AND RESUME DOWN TELEMETRY FROM THE BEGINNING OF THE CURRENT
042356,000059: # DOWNLIST.
042357,000060: # ALSO OF INTEREST IS THE FACT THAT ON A RESTART THE AGC WILL ZERO DOWNLINK CHANNELS 13, 34 AND 35.
042358,000061: # DOWNLINK LIST SELECTION:
042359,000062: # THE APPROPRIATE DOWNLINK LISTS ARE SELECTED BY THE FOLLOWING:
042360,000063: # 1. FRESH START
042361,000064: # 2. V37EXXE WHERE XX = THE MAJOR MODE BEING SELECTED.
042362,000065: # 3. UPDATE PROGRAM (P27)
042363,000066: # 4. NON-V37 SELECTABLE TYPE PROGRAMS (E.G. AGS INITIALIZATION(SUNDANCE, LUMINARY) AND P61-P62
042364,000067: # TRANSITION(COLOSSUS) ETC.).
042365,000068:
042366,000069: # DOWNLINK LIST RULES AND LIMITATIONS:
042367,000070: # READ SECTION(S) WHICH FOLLOW 'DEBRIS' WRITEUP.
042368,000071:
042369,000072: # OUTPUT- EVERY 2 SECONDS 100 DOUBLE PRECISION WORDS (I.E. 200 LGC
042370,000073: # COMPUTER WORDS) ARE TRANSMITTED VIA DOWNLINK.
042371,000074:
042372,000075: # ERASABLE INITIALIZATION REQUIRED- NONE
042373,000076: # 'DNTMGOTO' AND 'DNLSTADR' ARE INITIALIZED BY THE FRESH START PROGRAM.
042374,000077:
042375,000078: # DEBRIS(ERASABLE LOCATIONS DESTROYED BY THIS PROGRAM)-
042376,000079: # LDATALST, DNTMBUFF TO DNTMBUFF +21D, TMINDEX, DNQ.
042377,000080:
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Page 981
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042380,000083:
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Page 982 |
042382,000085: # DODOWNTM IS ENTERED EVERY 20 MS BY AN INTERRUPT TRIGGERED BY THE
042383,000086: # RECEIPT OF AN ENDPULSE FROM THE SPACECRAFT TELEMETRY PROGRAMMER.
042384,000087:
042385,000088: # NOTES REGARDING DOWNLINK LISTS ASSOCIATED WITH THIS PROGRAM:
042386,000089: # 1. DOWNLISTS. - DOWNLISTS MUST BE COMPILED IN THE SAME BANK AS THE
042387,000090: # DOWN-TELEMETRY PROGRAM. THIS IS DONE FOR EASE OF CODING, FASTER
042388,000091: # EXECUTION.
042389,000092: # 2. EACH DOWNLINK LIST CONSISTS OF A CONTROL LIST AND A NUMBER OF
042390,000093: # SUBLISTS.
042391,000094: # 3. A SUBLIST REFERS TO A SNAPSHOT OR DATA COMMON TO THE SAME OR OTHER
042392,000095: # DOWNLINK LISTS. ANY SUBLIST CONTAINING COMMON DATA NEEDS TO BE
042393,000096: # CODED ONLY ONCE FOR THE APPLICABLE DOWNLINK LISTS.
042394,000097: # 4. SNAPSHOT SUBLISTS REFER SPECIFICALLY TO HOMOGENOUS DATA WHICH MUST BE
042395,000098: # SAVED IN A BUFFER DURING ONE DOWNRUPT.
042396,000099: # 5. THE 1DNADR FOR THE 1ST WORD OF SNAPSHOT DATA IS FOUND AT THE END
042397,000100: # OF EACH SNAPSHOT SUBLIST, SINCE THE PROGRAM CODING SENDS THIS DP WORD
042398,000101: # IMMEDIATELY AFTER STORING THE OTHERS IN THE SNAPSHOT BUFFER.
042399,000102: # 6. ALL LISTS ARE COMBINATIONS OF CODED ERASABLE ADDRESS CONSTANTS
042400,000103: # CREATED FOR THE DOWNLIST PROGRAM.
042401,000104: # A. 1DNADR 1-WORD DOWNLIST ADDRESS.
042402,000105: # SAME AS ECADR, BUT USED WHEN THE WORD ADDRESSED IS THE LEFT
042403,000106: # HALF OF A DOUBLE-PRECISION WORD FOR DOWN TELEMETRY.
042404,000107: # B. 2DNADR - 6DNADR N-WORD DOWNLIST ADDRESS, N = 2 - 6.
042405,000108: # SAME AS 1DNADR, BUT WITH THE 4 UNUSED BITS OF THE ECADR FORMAT
042406,000109: # FILLED IN WITH 0001-0101. USED TO POINT TO A LIST OF N DOUBLE-
042407,000110: # PRECISION WORDS, STORED CONSECUTIVELY, FOR DOWN TELEMETRY.
042408,000111: # C. DNCHAN DOWNLIST CHANNEL ADDRESS.
042409,000112: # SAME AS 1DNADR, BUT WITH PREFIX BITS 0111. USED TO POINT TO
042410,000113: # A PAIR OF CHANNELS FOR DOWN TELEMETRY.
042411,000114: # D. DNPTR DOWN TELEMETRY SUBLIST POINTER.
042412,000115: # SAME AS CAF BUT TAGGED AS A CONSTANT. USED IN CONTROL LIST TO POINT TO A SUBLIST.
042413,000116: # CAUTION--- A DNPTR CANNOT BE USED IN A SUBLIST.
042414,000117: # 7. THE WORD ORDER CODE IS SET TO ZERO AT THE BEGINNING OF EACH DOWNLIST (I.E. CONTROL LIST) AND WHEN
042415,000118: # A '1DNADR TIME2' IS DETECTED IN THE CONTROL LIST (ONLY).
042416,000119: # 8. IN THE SNAPSHOT SUBLIST ONLY, THE DNADR'S CANNOT POINT TO THE FIRST WORD OF ANY EBANK.
042417,000120:
042418,000121: # DOWNLINK LIST RESTRICTIONS:
042419,000122: # (THE FOLLOWING POINTS MAY BE LISTED ELSEWHERE BUT ARE LISTED HERE SO IT IS CLEAR THAT THESE THINGS CANNOT BE
042420,000123: # DONE)
042421,000124:
042422,000125: # 1. SNAPSHOT DOWNLIST:
042423,000126: # (A) CANNOT CONTAIN THE FOLLOWING ECADRS(I.E. 1DNADR'S): 0, 400, 1000, 1400, 2000, 2400, 3000, 3400.
042424,000127: # (B) CAN CONTAIN ONLY 1DNADR'S
042425,000128:
042426,000129: # 2. ALL DOWNLINKED DATA(EXCEPT CHANNELS) IS PICKED UP BY A <DCA<SO DOWNLINK LISTS CANNOT CONTAIN THE
042427,000130: # EQUIVALENT OF THE FOLLOWING ECADRS(I.E. IDNADRS): 377, 777, 1377, 1777, 2377, 27777, 3377, 3777.
042428,000131:
042429,000132: # (NOTE: THE TERM EQUIVALENT ' MEANT THAT THE IDNADR TO 6DNADR WILL BE PROCESSED LIKE 1 TO 6 ECADRS)
042430,000133:
042431,000134: # 3. CONTROL LISTS AND SUBLISTS CANNOT HAVE ENTRIES = OCTAL 00000 OR OCTAL 77777
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Page 983 |
042433,000136: # 4. THE '1DNADR TIME2' WHICH WILL CAUSE THE DOWNLINK PROGRAM TO SET THE WORDER CODE TO 3 MUST APPEAR IN THE
042434,000137: # CONTROL SECTION OF THE DOWNLIST.
042435,000138:
042436,000139: # 5. 'DNCHAN 0' CANNOT BE USED.
042437,000140:
042438,000141: # 6. 'DNPTR 0' CANNOT BE USED.
042439,000142:
042440,000143: # 7. DNPTR CANNOT APPEAR IN A SUBLIST.
042441,000144:
042442,000145: # EBANK SETTINGS
042443,000146: # IN THE PROCESS OF SETTING THE EBANK (WHEN PICKING UP DOWNLINK DATA) THE DOWN TELEMETRY PROGRAM PUTS
042444,000147: # 'GARBAGE' INTO BITS15-12 OF EBANK. HUGH BLAIR-SMITH WARNS US THAT BITS15-12 OF EBANK MAY BECOME
042445,000148: # SIGNIFICANT SOMEDAY IN THE FUTURE. IF/WHEN THAT HAPPENS, THE PROGRAM SHOULD INSURE(BY MASKING ETC.)
042446,000149: # THAT BITS 15-12 OF EBANK ARE ZERO.
042447,000150:
042448,000151: # INITIALIZATION REQUIRED - TO INTERRUPT CURRENT LIST AND START A NEW ONE..
042449,000152: # 1. ADRES OF DOWNLINK LIST INTO DNLSTADR
042450,000153: # 2. NEGONE INTO SUBLIST
042451,000154: # 3. NEGONE INTO DNECADR
042452,000155:
042453,000156: 22,3711 BANK 22
042454,000157: 05,2000 SETLOC DOWNTELM
042455,000158: 05,2000 BANK
042456,000159:
042457,000160: 05,3472 0340 EBANK= DNTMBUFF
042458,000161:
042459,000162: 05,3472 COUNT* $$/DPROG
042460,000163: 05,3472 54016 DODOWNTM TS BANKRUPT
042461,000164: 05,3473 00006 EXTEND
042462,000165: 05,3474 22012 QXCH QRUPT # SAVE Q
042463,000166: 05,3475 34745 CA BIT7 # AT THE BEGINNING OF THE LIST THE WORD
042464,000167: 05,3476 00006 EXTEND # ORDER BIT WILL BE SET BACK TO ZERO.
042465,000168: 05,3477 02013 RAND CHAN13
042466,000169: 05,3500 10000 CCS A
042467,000170: 05,3501 00335 TC DNTMGOTO
042468,000171: 05,3502 06022 TC C13STALL
042469,000172: 05,3503 34745 CA BIT7
042470,000173: 05,3504 00006 EXTEND # SET WORD ORDER BIT TO 1 ONLY IF IT
042471,000174: 05,3505 05013 WOR CHAN13 # ALREADY ISN'T.
042472,000175: 05,3506 00335 TC DNTMGOTO # GOTO APPROPRIATE PHASE OF PROGRAM
042473,000176:
042474,000177: 05,3507 37752 DNPHASE1 CA NEGONE # INITIALIZE ALL CONTROL WORDS
042475,000178: 05,3510 54337 TS SUBLIST # WORDS TO MINUS ONE
042476,000179: 05,3511 54336 TS DNECADR
042477,000180: 05,3512 33637 CA LDNPHAS2 # SET DNTMGOTO =O ALL SUBSEQUENT DOWNRUPTS
042478,000181: 05,3513 54335 TS DNTMGOTO # GO TO DNPHASE2
042479,000182: 05,3514 13530 TCF NEWLIST
042480,000183: 05,3515 10336 DNPHASE2 CCS DNECADR # SENDING OF DATA IN PROGRESS
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Page 984 |
042482,000185: 05,3516 03652 DODNADR TC FETCH2WD # YES - THEN FETCH THE NEXT 2 SP WORDS
042483,000186: 05,3517 77753 MINTIME2 -1DNADR TIME2 # NEGATIVE OF TIME2 1DNADR
042484,000187: 05,3520 13521 TCF +1 # (ECADR OF 3776 + 74001 = 77777)
042485,000188:
042486,000189: 05,3521 10337 CCS SUBLIST # IS THE SUBLIST IN CONTROL
042487,000190: 05,3522 13665 TCF NEXTINSL # YES
042488,000191: 05,3523 74001 DNADRDCR OCT 74001 # DNADR COUNT AND ECADR DECREMENTER
042489,000192:
042490,000193: 05,3524 30334 CHKLIST CA CTLIST
042491,000194: 05,3525 00006 EXTEND
042492,000195: 05,3526 63530 BZMF NEWLIST # IT WILL BE NEGATIVE AT END OF LIST
042493,000196: 05,3527 13535 TCF NEXTINCL
042494,000197: 05,3530 50333 NEWLIST INDEX DNLSTCOD
042495,000198: 05,3531 32441 CA DNTABLE # INITIALIZE CTLIST WITH
042496,000199: 05,3532 54334 TS CTLIST # STARTING ADDRESS OF NEW LIST
042497,000200: 05,3533 40333 CS DNLSTCOD
042498,000201: 05,3534 13754 TCF SENDID +3
042499,000202: 05,3535 50334 NEXTINCL INDEX CTLIST
042500,000203: 05,3536 30000 CA 0
042501,000204: 05,3537 10000 CCS A
042502,000205: 05,3540 24334 INCR CTLIST # SET POINTER TO PICK UP NEXT CTLIST WORD
042503,000206: 05,3541 13545 TCF +4 # ON NEXT ENTRY TO PROG. (A SHOULD NOT =0)
042504,000207: 05,3542 56334 XCH CTLIST # SET CTLIST TO NEGATIVE AND PLACE(CODING)
042505,000208: 05,3543 40000 COM # UNCOMPLEMENTED DNADR INTO A. (FOR LA)
042506,000209: 05,3544 56334 XCH CTLIST # (ST IN )
042507,000210: 05,3545 24000 +4 INCR A # (CTLIST)
042508,000211: 05,3546 54336 TS DNECADR # SAVE DNADR
042509,000212: 05,3547 63517 AD MINTIME2 # TEST FOR TIME2 (NEG. OF ECADR)
042510,000213: 05,3550 10000 CCS A
042511,000214: 05,3551 13555 TCF SETWO +1 # DON'T SET WORD ORDER CODE
042512,000215: 05,3552 47777 MINB1314 OCT 47777 # MINUS BIT 13 AND 14 (CAN'T GET HERE)
042513,000216: 05,3553 13555 TCF SETWO +1 # DON'T SET WORD ORDER CODE
042514,000217: 05,3554 03577 SETWO TC WOZERO # GO SET WORD ORDER CODE TO ZERO.
042515,000218: 05,3555 30336 +1 CA DNECADR # RELOAD A WITH THE DNADR.
042516,000219: 05,3556 63552 +2 AD MINB1314 # IS THIS A REGULAR DNADR?
042517,000220: 05,3557 00006 EXTEND
042518,000221: 05,3560 63652 BZMF FETCH2WD # YES. (A MUST NEVER BE ZERO)
042519,000222: 05,3561 67744 AD MINB12 # NO- IS IT A POINTER (DNPTR) OR A
042520,000223: 05,3562 00006 EXTEND # CHANNEL(DNCHAN)
042521,000224: 05,3563 63610 BZMF DODNPTR # IT'S A POINTER. (A MUST NEVER BE ZERO)
042522,000225:
042523,000226: 05,3564 00006 DODNCHAN TC 6 # (EXECUTED AS EXTEND) IT S A CHANNEL
042524,000227: 05,3565 50336 INDEX DNECADR
042525,000228: 05,3566 44000 INDEX 0 -4000 # (EXECUTED AS READ)
042526,000229: 05,3567 54001 TS L
042527,000230: 05,3570 00006 TC 6 # (EXECUTED AS EXTEND)
042528,000231: 05,3571 50336 INDEX DNECADR
042529,000232: 05,3572 43777 INDEX 0 -4001 # (EXECUTED AS READ)
042530,000233: 05,3573 54336 TS DNECADR # SET DNECADR
042531,000234: 05,3574 37752 CA NEGONE # TO MINUS
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Page 985 |
042533,000236: 05,3575 56336 XCH DNECADR # WHILE PRESERVING A.
042534,000237: 05,3576 13700 TCF DNTMEXIT # GO SEND CHANNELS
042535,000238:
042536,000239: 05,3577 00006 WOZERO EXTEND
042537,000240: 05,3600 23265 QXCH C13QSAV
042538,000241: 05,3601 22070 LXCH RUPTREG1
042539,000242: 05,3602 06022 TC C13STALL
042540,000243:
042541,000244: 05,3603 22070 LXCH RUPTREG1
042542,000245: 05,3604 44745 CS BIT7
042543,000246: 05,3605 00006 EXTEND
042544,000247: 05,3606 03013 WAND CHAN13 # SET WORD ORDER CODE TO ZERO
042545,000248: 05,3607 01265 TC C13QSAV
042546,000249:
042547,000250: 05,3610 50336 DODNPTR INDEX DNECADR # DNECADR CONTAINS ADRES OF SUBLIST
042548,000251: 05,3611 00000 0 0 # CLEAR AND ADD LIST ENTRY INTO A.
042549,000252: 05,3612 10000 CCS A # IS THIS A SNAPSHOT SUBLIST
042550,000253: 05,3613 30336 CA DNECADR # NO, IT IS A REGULAR SUBLIST.
042551,000254: 05,3614 13664 TCF DOSUBLST # A MUST NOT BE ZERO.
042552,000255:
042553,000256: 05,3615 56336 XCH DNECADR # YES, IT IS A SNAPSHOT SUBLIST.
042554,000257: 05,3616 54337 TS SUBLIST # C(DNECADR) INTO SUBLIST
042555,000258: 05,3617 34755 CAF ZERO # A INTO A
042556,000259: 05,3620 56336 XCH TMINDEX # (NOTE.. TMINDEX = DNECADR)
042557,000260:
042558,000261: # THE FOLLOWING CODING (FROM SNAPLOOP TO SNAPEND)IS FOR THE PURPOSE OF TAKING A SNAPSHOT OF 12 DP REGISTERS.
042559,000262: # THIS IS DONE BY SAVING 11 DP REGISTERS IN DNTMBUFF AND SENDING THE FIRST DP WORD IMMEDIATELY.
042560,000263: # THE SNAPSHOT PROCESSING IS THE MOST TIME CONSUMING AND THEREFORE THE CODING AND LIST STRUCTURE WERE DESIGNED
042561,000264: # TO MINIMIZE TIME. THE TIME OPTIMIZATION RESULTS IN RULES UNIQUE TO THE SNAPSHOT PORTION OF THE DOWNLIST.
042562,000265: # THESE RULES ARE ......
042563,000266: # 1. ONLY 1DNADR'S CAN APPEAR IN THE SNAPSHOT SUBLIST
042564,000267: # 2. THE 1DNADR'S CANNOT REFER TO THE FIRST LOCATION IN ANY BANK.
042565,000268:
042566,000269: 05,3621 54003 SNAPLOOP TS EBANK # SET EBANK
042567,000270: 05,3622 74357 MASK LOW8 # ISOLATE RELATIVE ADDRESS
042568,000271: 05,3623 00006 EXTEND
042569,000272: 05,3624 50000 INDEX A
042570,000273: 05,3625 E3,1401 EBANK= 1401
042571,000274: 05,3625 31402 DCA 1401 # PICK UP 2 SNAPSHOT WORDS.
042572,000275: 05,3626 0340 EBANK= DNTMBUFF
042573,000276: 05,3626 50336 INDEX TMINDEX
042574,000277: 05,3627 52341 DXCH DNTMBUFF # STORE 2 SNAPSHOT WORDS IN BUFFER
042575,000278: 05,3630 24336 INCR TMINDEX # SET BUFFER INDEX FOR NEXT 2 WORDS.
042576,000279: 05,3631 24336 INCR TMINDEX
042577,000280: 05,3632 24337 SNAPAGN INCR SUBLIST # SET POINTER TO NEXT 2 WORDS OF SNAPSHOT
042578,000281: 05,3633 50337 INDEX SUBLIST
042579,000282: 05,3634 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
042580,000283: 05,3635 10000 CCS A # TEST FOR LAST TWO WORDS OF SNAPSHOT.
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Page 986 |
042582,000285: 05,3636 13621 TCF SNAPLOOP # NOT LAST TWO.
042583,000286: 05,3637 03515 LDNPHAS2 GENADR DNPHASE2
042584,000287: 05,3640 54337 TS SUBLIST # YES, LAST. SAVE A.
042585,000288: 05,3641 37752 CA NEGONE # SET DNECADR AND
042586,000289: 05,3642 54336 TS DNECADR # SUBLIST POINTERS
042587,000290: 05,3643 56337 XCH SUBLIST # TO NEGATIVE VALUES.
042588,000291: 05,3644 54003 TS EBANK
042589,000292: 05,3645 74357 MASK LOW8
042590,000293: 05,3646 00006 EXTEND
042591,000294: 05,3647 50000 INDEX A
042592,000295: 05,3650 E3,1401 EBANK= 1401
042593,000296: 05,3650 31402 DCA 1401 # PICK UP FIRST 2 WORDS OF SNAPSHOT.
042594,000297: 05,3651 0340 EBANK= DNTMBUFF
042595,000298: 05,3651 13700 SNAPEND TCF DNTMEXIT # NOW GO SEND THEM.
042596,000299:
042597,000300: 05,3652 30336 FETCH2WD CA DNECADR
042598,000301: 05,3653 54003 TS EBANK # SET EBANK
042599,000302: 05,3654 74357 MASK LOW8 # ISOLATE RELATIVE ADDRESS
042600,000303: 05,3655 54001 TS L
042601,000304: 05,3656 33523 CA DNADRDCR # DECREMENT COUNT AND ECADR
042602,000305: 05,3657 26336 ADS DNECADR
042603,000306: 05,3660 00006 EXTEND
042604,000307: 05,3661 50001 INDEX L
042605,000308: 05,3662 E3,1400 EBANK= 1400
042606,000309: 05,3662 31401 DCA 1400 # PICK UP 2 DATA WORDS
042607,000310: 05,3663 0340 EBANK= DNTMBUFF
042608,000311: 05,3663 13700 TCF DNTMEXIT # NOW GO SEND THEM.
042609,000312:
042610,000313: 05,3664 54337 DOSUBLST TS SUBLIST # SET SUBLIST POINTER
042611,000314: 05,3665 50337 NEXTINSL INDEX SUBLIST
042612,000315: 05,3666 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
042613,000316: 05,3667 10000 CCS A # IS IT THE END OF THE SUBLIST
042614,000317: 05,3670 24337 INCR SUBLIST # NO-
042615,000318: 05,3671 13675 TCF +4
042616,000319: 05,3672 54337 TS SUBLIST # SAVE A.
042617,000320: 05,3673 37752 CA NEGONE # SET SUBLIST TO MINUS
042618,000321: 05,3674 56337 XCH SUBLIST # RETRIEVE A.
042619,000322: 05,3675 24000 +4 INCR A
042620,000323: 05,3676 54336 TS DNECADR # SAVE DNADR
042621,000324: 05,3677 13556 TCF SETWO +2 # GO USE COMMON CODING (PROBLEMS WOULD
042622,000325: # OCCUR IF THE PROGRAM ENCOUNTERED A
042623,000326: # DNPTR NOW)
042624,000327:
042625,000328: 05,3700 00006 DNTMEXIT EXTEND # DOWN-TELEMETRY EXIT
042626,000329: 05,3701 01034 WRITE DNTM1 # TO SEND A + L TO CHANNELS 34 + 35
042627,000330: 05,3702 30001 CA L # RESPECTIVELY
042628,000331: 05,3703 00006 TMEXITL EXTEND
042629,000332: 05,3704 01035 WRITE DNTM2
042630,000333: 05,3705 15270 TMRESUME TCF RESUME # EXIT TELEMETRY PROGRAM VIA RESUME.
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Page 987 |
042632,000335: 05,3706 7744 MINB12 EQUALS -1/8
042633,000336: 05,3706 0336 DNECADR EQUALS TMINDEX
042634,000337: 05,3706 0334 CTLIST EQUALS LDATALST
042635,000338: 05,3706 0337 SUBLIST EQUALS DNQ
042636,000339: # MOD BY - DENSMORE - JUNE 1969 - ELIMINATE ERASABLE DUMP COUNT
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Page 988 |
042638,000341: # SUBROUTINE NAME- DNDUMP
042639,000342:
042640,000343: # FUNCTIONAL DESCRIPTION - TO SEND (DUMP) ALL 8 BANKS OF ERASABLE STORAGE TWICE. BANKS ARE SENT ONE AT A TIME
042641,000344: # EACH BANK IS PRECEEDED BY AN ID WORD, SYNCH BITS, ECADR AND TIME1 FOLLOWED BY THE 256D WORDS OF EACH
042642,000345: # EBANK. EBANKS ARE DUMPED IN ORDER (I.E. EBANK 0 FIRST, THEN EBANK1 ETC.)
042643,000346:
042644,000347: # CALLING SEQUENCE- THE GROUND OR ASTRONAUT BY KEYING V74E CAN INITIALIZE THE DUMP.
042645,000348: # AFTER KEYING IN V74E THE CURRENT DOWNLIST WILL BE IMMEDIATELY TERMINATED AND THE DOWNLINK ERASABLE DUMP
042646,000349: # WILL BEGIN.
042647,000350: # ONCE INITIATED THE DOWNLINK ERASABLE DUMP CAN BE TERMINATED (AND INTERRUPTED DOWNLIST REINSTATED) ONLY
042648,000351: # BY THE FOLLOWING:
042649,000352: # 1. A FRESH START
042650,000353: # 2. COMPLETION OF BOTH COMPLETE DUMPS
042651,000354: # 3. AND INVOLUNTARILY BY A RESTART.
042652,000355: # NORMAL EXIT MODE- TCF DNPHASE1
042653,000356: # ALARM OR ABORT MODE- NONE
042654,000357: # *SUBROUTINES CALLED- NONE.
042655,000358: # ERASABLE INITIALIZATION REQUIRED -
042656,000359: # NONE
042657,000360: # DEBRIS - DUMPLOC, DUMPSW, DNTMGOTO, EBANK AND CENTRAL REGISTERS
042658,000361: # TIMING - TIME (IN SECS) = ((NO.DUMPS)*(NO.EBANKS)*(WDSPEREBANK + NO.IDWDS)) / NO.WDSPERSEC
042659,000362: # TIME (IN SECS) = ( 4 )*( 8 )*( 256 + 4 ) / 100
042660,000363: # THUS TIME (IN SECS TO SEND DUMP OF ERASABLE 4 TIMES VIA DOWNLINK) = 83.2 SECONDS
042661,000364:
042662,000365: # STRUCTURE OF ONE EBANK AS IT IS SENT BY DOWNLINK PROGRAM -
042663,000366: # (REMINDER - THIS ONLY DESCRIBES ONE OF THE 8 EBANKS X 4 (DUMPS) = 32 EBANKS WHICH WILL BE SENT BY DNDUMP)
042664,000367: # DOWNLIST W
042665,000368: # WORD TAKEN FROM CONTENTS OF EXAMPLE O COMMENTS
042666,000369:
042667,000370: # 1 ERASID 0177X 0 DOWNLIST I.D. FOR DOWNLINK ERASABLE DUMP (X=7 CSM, 6 LM)
042668,000371: # 2 LOWIDCOD 77340 1 DOWNLINK SYNCH BITS.(SAME ONE USED IN ALL OTHER DOWNLISTS)
042669,000372: # 3 DUMPLOC 13400 1 (SEE NOTES ON DUMPLOC)1= 3RD ERAS DUMP, 3400=ECADR OF 5TH WD
042670,000373: # 4 TIME1 14120 1 TIME IN CENTISECONDS
042671,000374: # 5 FIRST WORD OF EBANK X 03400 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1400 (ECADR 3400)
042672,000375: # 6 2ND WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1401 (ECADR 3401)
042673,000376: # 7 3RD WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1402 (ECADR 3402)
042674,000377: # . 1
042675,000378: # . 1
042676,000379: # . 1
042677,000380: # 260D 256TH WORD OF EBANK X 03777 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1777 (ECADR 3777)
042678,000381:
042679,000382: # NOTE- DUMPLOC CONTAINS THE COUNTER AND ECADR FOR EACH WORD BEING SENT.
042680,000383: # THE BIT STRUCTURE OF DUMPLOC IS FOLLOWS---
042681,000384: # X = NOT USED
042682,000385: # X ABC EEE RRRRRRRR ABC = ERASABLE DUMP COUNTER (I.E. ABC = 0,1,2 OR 3 WHICH MEANS THAT
042683,000386: # COMPLETE ERASABLE DUMP NUMBER 1,2,3 OR 4 RESPECTIVELY IS IN PROGRESS)
042684,000387: # EEE = EBANK BITS
042685,000388: # RRRRRRRR = RELATIVE ADDRESS WITHIN AN EBANK.
042686,000389:
042687,000390:
042688,000391: 05,3706 34755 DNDUMPI CA ZERO # INITIALIZE DOWNLINK
042689,000392: 05,3707 54336 TS DUMPLOC # ERASABLE DUMP
042690,000393: 05,3710 03751 +2 TC SENDID # GO SEND ID AND SYNCH BITS
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Page 989 |
042692,000395: 05,3711 33720 CA LDNDUMP1 # SET DNTMGOTO
042693,000396: 05,3712 54335 TS DNTMGOTO # TO LOCATION FOR NEXT PASS
042694,000397: 05,3713 30025 CA TIME1 # PLACE TIME1
042695,000398: 05,3714 56001 XCH L # INTO L
042696,000399: 05,3715 30336 CA DUMPLOC # AND ECADR OF THIS EBANK INTO A
042697,000400: 05,3716 13700 TCF DNTMEXIT # SEND DUMPLOC AND TIME1
042698,000401:
042699,000402: 05,3717 03721 LDNDUMP ADRES DNDUMP
042700,000403: 05,3720 03733 LDNDUMP1 ADRES DNDUMP1
042701,000404:
042702,000405: 05,3721 34752 DNDUMP CA TWO # INCREMENT ECADR IN DUMPLOC
042703,000406: 05,3722 26336 ADS DUMPLOC # TO NEXT DP WORD TO BE
042704,000407: 05,3723 74357 MASK LOW8 # DUMPED AND SAVE IT.
042705,000408: 05,3724 10000 CCS A # IS THIS THE BEGINNING OF A NEW EBANK
042706,000409: 05,3725 13735 TCF DNDUMP2 # NO - THEN CONTINUE DUMPING
042707,000410: 05,3726 30336 CA DUMPLOC # YES - IS THIS THE END OF THE
042708,000411: 05,3727 74737 MASK BIT13 # SECOND COMPLETE ERASABLE DUMP?
042709,000412: 05,3730 00006 EXTEND
042710,000413: 05,3731 13710 BZF DNDUMPI +2 # NO - GO BACK AND INITIALIZE NEXT BANK
042711,000414: 05,3732 13507 TCF DNPHASE1 # YES - SEND DOWNLIST AGAIN
042712,000415: 05,3733 33717 DNDUMP1 CA LDNDUMP # SET DNTMGOTO
042713,000416: 05,3734 54335 TS DNTMGOTO # FOR WORDS 3 TO 256D OF CURRENT EBANK
042714,000417:
042715,000418: 05,3735 30336 DNDUMP2 CA DUMPLOC
042716,000419: 05,3736 54003 TS EBANK # SET EBANK
042717,000420: 05,3737 74357 MASK LOW8 # ISOLATE RELATIVE ADDRESS.
042718,000421: 05,3740 54002 TS Q # (NOTE: MASK INSTRUCTION IS USED TO PICK
042719,000422: 05,3741 34754 CA NEG0 # UP ERASABLE REGISTERS SO THAT EDITING
042720,000423: 05,3742 54001 TS L # REGISTERS 20-23 WILL NOT BE ALTERED.)
042721,000424: 05,3743 50002 INDEX Q
042722,000425: 05,3744 E3,1400 EBANK= 1400 # PICK UP LOW ORDER REGISTER OF PAIR
042723,000426: 05,3744 71401 MASK 1401 # OF ERASABLE REGISTERS.
042724,000427: 05,3745 56001 XCH L
042725,000428: 05,3746 50002 INDEX Q # PICK UP HIGH ORDER REGISTER OF PAIR
042726,000429: 05,3747 71400 MASK 1400 # OF ERASABLE REGISTERS.
042727,000430: 05,3750 0340 EBANK= DNTMBUFF
042728,000431: 05,3750 13700 TCF DNTMEXIT # GO SEND THEM
042729,000432:
042730,000433: 05,3751 00006 SENDID EXTEND # ** ENTRANCE USED BY ERASABLE DUMP PROG.**
042731,000434: 05,3752 22335 QXCH DNTMGOTO # SET DNTMGOTO SO NEXT TIME PROG WILL GO
042732,000435: 05,3753 35011 CAF ERASID # TO LOCATION FOLLOWING :TC SENDID:
042733,000436:
042734,000437: 05,3754 54001 TS L # ** ENTRANCE USED BY REGULAR DOWNLINK PG **
042735,000438: 05,3755 03577 TC WOZERO # GO SET WORD ORDER CODE TO ZERO
042736,000439: 05,3756 32065 CAF LOWIDCOD # PLACE SPECIAL ID CODE INTO L
042737,000440: 05,3757 56001 XCH L # AND ID BACK INTO A
042738,000441: 05,3760 13700 TCF DNTMEXIT # SEND DOWNLIST ID CODE(S).
042739,000442:
End of include-file DOWN-TELEMETRY_PROGRAM.agc. Parent file is MAIN.agc