Source Code
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These source-code files are part of a reconstructed copy of Luminary 178, the
final release of the Apollo 14 Lunar Module (LM) Apollo Guidance Computer
(AGC) software.
The reconstruction began with source code of Zerlina 56, Luminary 210, and
Luminary 131, previously transcribed from digitized copies of those programs.
The code was created by combining the three, using Zerlina 56 as a base, since
it was based off of Luminary 183. The differences between the three were
carefully merged using the Luminary memos as a guide, with all changes made
after Luminary 178 being backed out. The reconstruction was verified by matching
memory-bank checksums to those listed in drawing 2021152N. Note that page numbers
in the reconstructed code match those for the baseline log section mentioned in
each file's changelog; the page numbers for a real Luminary 178 listing would
be different.
Comments from the original source code are prefixed with a single '#' symbol,
whereas comments added later are prefixed by "##" or "###". Report any errors
noted by creating an
issue report at the Virtual AGC
project's GitHub repository.
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042549,000002: ## Copyright: Public domain.
042550,000003: ## Filename: DOWN-TELEMETRY_PROGRAM.agc
042551,000004: ## Purpose: A section of Luminary revision 178.
042552,000005: ## It is part of the reconstructed source code for the final
042553,000006: ## release of the flight software for the Lunar Module's
042554,000007: ## (LM) Apollo Guidance Computer (AGC) for Apollo 14. The
042555,000008: ## code has been recreated from copies of Zerlina 56, Luminary
042556,000009: ## 210, and Luminary 131, as well as many Luminary memos.
042557,000010: ## It has been adapted such that the resulting bugger words
042558,000011: ## exactly match those specified for Luminary 178 in NASA
042559,000012: ## drawing 2021152N, which gives relatively high confidence
042560,000013: ## that the reconstruction is correct.
042561,000014: ## Reference: pp. 979-988
042562,000015: ## Assembler: yaYUL
042563,000016: ## Contact: Ron Burkey <info@sandroid.org>.
042564,000017: ## Website: www.ibiblio.org/apollo/index.html
042565,000018: ## Mod history: 2019-08-14 MAS Created from Zerlina 56.
042566,000019: ## 2019-09-15 MAS Restored the definitions of DNECADR,
042567,000020: ## CTLIST, and SUBLIST.
042568,000021:
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Page 979
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042570,000023: # PROGRAM NAME- DOWN TELEMETRY PROGRAM
042571,000024: # MOD NO.- 0 TO COMPLETELY REWRITE THE DOWN TELEMETRY PROGRAM AND DOWNLINK ERASABLE DUMP PROGRAM FOR THE
042572,000025: # PURPOSE OF SAVING APPROXIMATELY 150 WORDS OF CORE STORAGE.
042573,000026: # THIS CHANGE REQUIRES AN ENTIRELY NEW METHOD OF SPECIFYING DOWNLINK LISTS.REFER TO DOWNLINK
042574,000027: # LISTS LOG SECTION FOR MORE DETAILS. HOWEVER THIS CHANGE WILL NOT AFFECT THE GROUND PROCESSING
042575,000028: # OF DOWN TELEMETRY DATA.
042576,000029: # MOD BY- KILROY, SMITH, DEWITT
042577,000030: # DATE- 02OCT67
042578,000031: # AUTHORS- KILROY, SMITH, DEWITT, DEWOLF, FAGIN
042579,000032: # LOG SECTION- DOWN-TELEMETRY PROGRAM
042580,000033: # FUNCTIONAL DESCRIPTION- THIS ROUTINE IS INITIATED BY TELEMETRY END
042581,000034: # PULSE FROM THE DOWNLINK TELEMETRY CONVERTER. THIS PULSE OCCURS
042582,000035: # AT 50 TIMES PER SEC(EVERY 20 MS) THEREFORE DODOWNTM IS
042583,000036: # EXECUTED AT THESE RATES. THIS ROUTINE SELECTS THE APPROPRIATE
042584,000037: # AGC DATA TO BE TRANSMITTED DOWNLINK AND LOADS IT INTO OUTPUT
042585,000038: # CHANNELS 34 AND 35. THE INFORMATION IS THEN GATED OUT FROM THE
042586,000039: # LGC IN SERIAL FASHION.
042587,000040: # THIS PROGRAM IS CODED FOR A 2 SECOND DOWNLIST. SINCE DOWNRUPTS
042588,000041: # OCCUR EVERY 20MS AND 2 AGC COMPUTER WORDS CAN BE PLACED IN
042589,000042: # CHANNELS 34 AND 35 DURING EACH DOWNRUPT THE PROGRAM IS CAPABLE
042590,000043: # OF SENDING 200 AGC WORDS EVERY 2 SECONDS.
042591,000044: # CALLING SEQUENCE- NONE
042592,000045: # PROGRAM IS ENTERED VIA TCF DODOWNTM WHICH IS EXECUTED AS A
042593,000046: # RESULT OF A DOWNRUPT. CONTROL IS RETURNED VIA TCF RESUME WHICH
042594,000047: # IN EFFECT IS A RESUME.
042595,000048: # SUBROUTINES CALLED- NONE
042596,000049: # NORMAL EXIT MODE- TCF RESUME
042597,000050: # ALARM OR ABORT EXIT MODE- NONE
042598,000051: # RESTART PROTECTION:
042599,000052: # ON A FRESH START AND RESTART THE 'STARTSUB' SUBROUTINE WILL INITIALIZE THE DOWNLIST POINTER(ACTUALLY
042600,000053: # DNTMGOTO) TO THE BEGINNING OF THE CURRENT DOWNLIST(I.E. CURRENT CONTENTS OF DNLSTADR). THIS HAS THE
042601,000054: # EFFECT OF IGNORING THE REMAINDER OF THE DOWNLIST WHICH THE DOWN-TELEMETRY PROGRAM WAS WORKING ON WHEN
042602,000055: # THE RESTART(OR FRESH START) OCCURRED AND RESUME DOWN TELEMETRY FROM THE BEGINNING OF THE CURRENT
042603,000056: # DOWNLIST.
042604,000057: # ALSO OF INTEREST IS THE FACT THAT ON A RESTART THE AGC WILL ZERO DOWNLINK CHANNELS 13, 34 AND 35.
042605,000058: # DOWNLINK LIST SELECTION:
042606,000059: # THE APPROPRIATE DOWNLINK LISTS ARE SELECTED BY THE FOLLOWING:
042607,000060: # 1. FRESH START
042608,000061: # 2. V37EXXE WHERE XX = THE MAJOR MODE BEING SELECTED.
042609,000062: # 3. UPDATE PROGRAM(P27)
042610,000063: # 4. NON-V37 SELECTABLE TYPE PROGRAMS(E.G. AGS INITIALIZATION(SUNDANCE,LUMINARY) AND P61-P62
042611,000064: # TRANSITION(COLOSSUS) ETC.).
042612,000065: # DOWNLINK LIST RULES AND LIMITATIONS:
042613,000066: # READ SECTION(S) WHICH FOLLOW 'DEBRIS' WRITEUP.
042614,000067: # OUTPUT- EVERY 2 SECONDS 100 DOUBLE PRECISION WORDS(I.E. 200 LGC
042615,000068: # COMPUTER WORDS) ARE TRANSMITTED VIA DOWNLINK.
042616,000069: # ERASABLE INITIALIZATION REQUIRED- NONE
042617,000070: # 'DNTMGOTO' AND 'DNLSTADR' ARE INITIALIZED BY THE FRESH START PROGRAM.
042618,000071: # DEBRIS(ERASABLE LOCATIONS DESTROYED BY THIS PROGRAM)-
042619,000072: # LDATALST,DNTMBUFF TO DNTMBUFF +21D,TMINDEX,DNQ.
042620,000073:
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Page 980
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042622,000075:
042623,000076:
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Page 981
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042625,000078: # DODOWNTM IS ENTERED EVERY 20 MS BY AN INTERRUPT TRIGGERED BY THE
042626,000079: # RECEIPT OF AN ENDPULSE FROM THE SPACECRAFT TELEMETRY PROGRAMMER.
042627,000080:
042628,000081: # NOTES REGARDING DOWNLINK LISTS ASSOCIATED WITH THIS PROGRAM:
042629,000082: # 1. DOWNLISTS. - DOWNLISTS MUST BE COMPILED IN THE SAME BANK AS THE
042630,000083: # DOWN-TELEMETRY PROGRAM. THIS IS DONE FOR EASE OF CODING, FASTER
042631,000084: # EXECUTION.
042632,000085: # 2. EACH DOWNLINK LIST CONSISTS OF A CONTROL LIST AND A NUMBER OF
042633,000086: # SUBLISTS.
042634,000087: # 3. A SUBLIST REFERS TO A SNAPSHOT OR DATA COMMON TO THE SAME OR OTHER
042635,000088: # DOWNLINK LISTS. ANY SUBLIST CONTAINING COMMON DATA NEEDS TO BE
042636,000089: # CODED ONLY ONCE FOR THE APPLICABLE DOWNLINK LISTS.
042637,000090: # 4. SNAPSHOT SUBLISTS REFER SPECIFICALLY TO HOMOGENOUS DATA WHICH MUST BE
042638,000091: # SAVED IN A BUFFER DURING ONE DOWNRUPT.
042639,000092: # 5. THE 1DNADR FOR THE 1ST WORD OF SNAPSHOT DATA IS FOUND AT THE END
042640,000093: # OF EACH SNAPSHOT SUBLIST, SINCE THE PROGRAM CODING SENDS THIS DP WORD
042641,000094: # IMMEDIATELY AFTER STORING THE OTHERS IN THE SNAPSHOT BUFFER.
042642,000095: # 6. ALL LISTS ARE COMBINATIONS OF CODED ERASABLE ADDRESS CONSTANTS
042643,000096: # CREATED FOR THE DOWNLIST PROGRAM.
042644,000097: # A. 1DNADR 1-WORD DOWNLIST ADDRESS.
042645,000098: # SAME AS ECADR, BUT USED WHEN THE WORD ADDRESSED IS THE LEFT
042646,000099: # HALF OF A DOUBLE-PRECISION WORD FOR DOWN TELEMETRY.
042647,000100: # B. 2DNADR - 6DNADR N-WORD DOWNLIST ADDRESS, N = 2 - 6.
042648,000101: # SAME AS 1DNADR, BUT WITH THE 4 UNUSED BITS OF THE ECADR FORMAT
042649,000102: # FILLED IN WITH 0001-0101. USED TO POINT TO A LIST OF N DOUBLE-
042650,000103: # PRECISION WORDS, STORED CONSECUTIVELY, FOR DOWN TELEMETRY.
042651,000104: # C. DNCHAN DOWNLIST CHANNEL ADDRESS.
042652,000105: # SAME AS 1DNADR, BUT WITH PREFIX BITS 0111. USED TO POINT TO
042653,000106: # A PAIR OF CHANNELS FOR DOWN TELEMETRY.
042654,000107: # D. DNPTR DOWN TELEMETRY SUBLIST POINTER.
042655,000108: # SAME AS CAF BUT TAGGED AS A CONSTANT. USED IN CONTROL LIST TO POINT TO A SUBLIST.
042656,000109: # CAUTION--- A DNPTR CANNOT BE USED IN A SUBLIST.
042657,000110: # 7. THE WORD ORDER CODE IS SET TO ZERO AT THE BEGINNING OF EACH DOWNLIST (I.E. CONTROL LIST) AND WHEN
042658,000111: # A '1DNADR TIME2' IS DETECTED IN THE CONTROL LIST(ONLY).
042659,000112: # 8. IN THE SNAPSHOT SUBLIST ONLY, THE DNADR'S CANNOT POINT TO THE FIRST WORD OF ANY EBANK.
042660,000113:
042661,000114: # DOWNLINK LIST RESTRICTIONS:
042662,000115: # (THE FOLLOWING POINTS MAY BE LISTED ELSEWHERE BUT ARE LISTED HERE SO IT IS CLEAR THAT THESE THINGS CANNOT BE
042663,000116: # DONE)
042664,000117: # 1. SNAPSHOT DOWNLIST:
042665,000118: # (A) CANNOT CONTAIN THE FOLLOWING ECADRS(I.E. 1DNADR'S): 0, 400, 1000, 1400, 2000, 2400, 3000, 3400.
042666,000119: # (B) CAN CONTAIN ONLY 1DNADR'S
042667,000120:
042668,000121: # 2. ALL DOWNLINKED DATA(EXCEPT CHANNELS) IS PICKED UP BY A <DCA<SO DOWNLINK LISTS CANNOT CONTAIN THE
042669,000122: # EQUIVALENT OF THE FOLLOWING ECADRS(I.E. IDNADRS): 377, 777, 1377, 1777, 2377, 27777, 3377, 3777.
042670,000123:
042671,000124: # (NOTE: THE TERM EQUIVALENT ' MEANT THAT THE IDNADR TO 6DNADR WILL BE PROCESSED LIKE 1 TO 6 ECADRS)
042672,000125:
042673,000126: # 3. CONTROL LISTS AND SUBLISTS CANNOT HAVE ENTRIES = OCTAL 00000 OR OCTAL 77777
042674,000127:
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Page 982
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042676,000129: # 4. THE '1DNADR TIME2' WHICH WILL CAUSE THE DOWNLINK PROGRAM TO SET THE WORDER CODE TO 3 MUST APPEAR IN THE
042677,000130: # CONTROL SECTION OF THE DOWNLIST.
042678,000131:
042679,000132: # 5. 'DNCHAN 0' CANNOT BE USED.
042680,000133:
042681,000134: # 6. 'DNPTR 0' CANNOT BE USED.
042682,000135:
042683,000136: # 7. DNPTR CANNOT APPEAR IN A SUBLIST.
042684,000137:
042685,000138:
042686,000139:
042687,000140:
042688,000141: # EBANK SETTINGS
042689,000142: # IN THE PROCESS OF SETTING THE EBANK(WHEN PICKING UP DOWNLINK DATA) THE DOWN TELEMETRY PROGRAM PUTS
042690,000143: # 'GARBAGE' INTO BITS15-12 OF EBANK. HUGH BLAIR-SMITH WARNS US THAT BITS15-12 OF EBANK MAY BECOME
042691,000144: # SIGNIFICANT SOMEDAY IN THE FUTURE. IF/WHEN THAT HAPPENS, THE PROGRAM SHOULD INSURE(BY MASKING ETC.)
042692,000145: # THAT BITS15-12 OF EBANK ARE ZERO.
042693,000146: # INITIALIZATION REQUIRED- TO INTERRUPT CURRENT LIST AND START A NEW ONE..
042694,000147: # 1. ADRES OF DOWNLINK LIST INTO DNLSTADR
042695,000148: # 2. NEGONE INTO SUBLIST
042696,000149: # 3. NEGONE INTO DNECADR
042697,000150:
042698,000151: 22,3710 BANK 22
042699,000152: 05,2000 SETLOC DOWNTELM
042700,000153: 05,2000 BANK
042701,000154:
042702,000155: 05,3510 0340 EBANK= DNTMBUFF
042703,000156:
042704,000157: 05,3510 COUNT* $$/DPROG
042705,000158: 05,3510 54016 DODOWNTM TS BANKRUPT
042706,000159: 05,3511 00006 EXTEND
042707,000160: 05,3512 22012 QXCH QRUPT # SAVE Q
042708,000161: 05,3513 34745 CA BIT7 # AT THE BEGINNING OF THE LIST THE WORD
042709,000162: 05,3514 00006 EXTEND # ORDER BIT WILL BE SET BACK TO ZERO.
042710,000163: 05,3515 02013 RAND CHAN13
042711,000164: 05,3516 10000 CCS A
042712,000165: 05,3517 00335 TC DNTMGOTO
042713,000166: 05,3520 06022 TC C13STALL
042714,000167: 05,3521 34745 CA BIT7
042715,000168: 05,3522 00006 EXTEND # SET WORD ORDER BIT TO 1 ONLY IF IT
042716,000169: 05,3523 05013 WOR CHAN13 # ALREADY ISN'T.
042717,000170: 05,3524 00335 TC DNTMGOTO # GO TO APPROPRIATE PHASE OF PROGRAM
042718,000171:
042719,000172: 05,2000 SETLOC DOWNTELM
042720,000173: 05,2000 BANK
042721,000174:
042722,000175: 05,3525 37752 DNPHASE1 CA NEGONE # INITIALIZE ALL CONTROL WORDS
042723,000176: 05,3526 54337 TS SUBLIST # WORDS TO MINUS ONE
042724,000177: 05,3527 54336 TS DNECADR
042725,000178: 05,3530 33655 CA LDNPHAS2 # SET DNTMGOTO =O ALL SUBSEQUENT DOWNRUPTS
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Page 983
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042727,000180: 05,3531 54335 TS DNTMGOTO # GO TO DNPHASE2
042728,000181: 05,3532 13546 TCF NEWLIST
042729,000182: 05,3533 10336 DNPHASE2 CCS DNECADR # SENDING OF DATA IN PROGRESS
042730,000183: 05,3534 03670 DODNADR TC FETCH2WD # YES - THEN FETCH THE NEXT 2 SP WORDS
042731,000184: 05,3535 77753 MINTIME2 -1DNADR TIME2 # NEGATIVE OF TIME2 1DNADR
042732,000185: 05,3536 13537 TCF +1 # (ECADR OF 3776 + 74001 = 77777)
042733,000186:
042734,000187: 05,3537 10337 CCS SUBLIST # IS THE SUBLIST IN CONTROL
042735,000188: 05,3540 13703 TCF NEXTINSL # YES
042736,000189: 05,3541 74001 DNADRDCR OCT 74001 # DNADR COUNT AND ECADR DECREMENTER
042737,000190:
042738,000191: 05,3542 30334 CHKLIST CA CTLIST
042739,000192: 05,3543 00006 EXTEND
042740,000193: 05,3544 63546 BZMF NEWLIST # IT WILL BE NEGATIVE AT END OF LIST
042741,000194: 05,3545 13553 TCF NEXTINCL
042742,000195: 05,3546 50333 NEWLIST INDEX DNLSTCOD
042743,000196: 05,3547 32452 CA DNTABLE # INITIALIZE CTLIST WITH
042744,000197: 05,3550 54334 TS CTLIST # STARTING ADDRESS OF NEW LIST
042745,000198: 05,3551 40333 CS DNLSTCOD
042746,000199: 05,3552 13772 TCF SENDID +3
042747,000200: 05,3553 50334 NEXTINCL INDEX CTLIST
042748,000201: 05,3554 30000 CA 0
042749,000202: 05,3555 10000 CCS A
042750,000203: 05,3556 24334 INCR CTLIST # SET POINTER TO PICK UP NEXT CTLIST WORD
042751,000204: 05,3557 13563 TCF +4 # ON NEXT ENTRY TO PROG. (A SHOULD NOT =0)
042752,000205: 05,3560 56334 XCH CTLIST # SET CTLIST TO NEGATIVE AND PLACE(CODING)
042753,000206: 05,3561 40000 COM # UNCOMPLEMENTED DNADR INTO A. (FOR LA)
042754,000207: 05,3562 56334 XCH CTLIST # (ST IN )
042755,000208: 05,3563 24000 +4 INCR A # (CTLIST)
042756,000209: 05,3564 54336 TS DNECADR # SAVE DNADR
042757,000210: 05,3565 63535 AD MINTIME2 # TEST FOR TIME2 (NEG. OF ECADR)
042758,000211: 05,3566 10000 CCS A
042759,000212: 05,3567 13573 TCF SETWO +1 # DON'T SET WORD ORDER CODE
042760,000213: 05,3570 47777 MINB1314 OCT 47777 # MINUS BIT 13 AND 14 (CAN'T GET HERE)
042761,000214: 05,3571 13573 TCF SETWO +1 # DON'T SET WORD ORDER CODE
042762,000215: 05,3572 03615 SETWO TC WOZERO # GO SET WORD ORDER CODE TO ZERO.
042763,000216: 05,3573 30336 +1 CA DNECADR # RELOAD A WITH THE DNADR.
042764,000217: 05,3574 63570 +2 AD MINB1314 # IS THIS A REGULAR DNADR?
042765,000218: 05,3575 00006 EXTEND
042766,000219: 05,3576 63670 BZMF FETCH2WD # YES. (A MUST NEVER BE ZERO)
042767,000220: 05,3577 67744 AD MINB12 # NO- IS IT A POINTER (DNPTR) OR A
042768,000221: 05,3600 00006 EXTEND # CHANNEL(DNCHAN)
042769,000222: 05,3601 63626 BZMF DODNPTR # IT'S A POINTER. (A MUST NEVER BE ZERO)
042770,000223:
042771,000224: 05,3602 00006 DODNCHAN TC 6 # (EXECUTED AS EXTEND) IT S A CHANNEL
042772,000225: 05,3603 50336 INDEX DNECADR
042773,000226: 05,3604 44000 INDEX 0 -4000 # (EXECUTED AS READ)
042774,000227: 05,3605 54001 TS L
042775,000228: 05,3606 00006 TC 6 # (EXECUTED AS EXTEND)
042776,000229: 05,3607 50336 INDEX DNECADR
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Page 984
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042778,000231: 05,3610 43777 INDEX 0 -4001 # (EXECUTED AS READ)
042779,000232: 05,3611 54336 TS DNECADR # SET DNECADR
042780,000233: 05,3612 37752 CA NEGONE # TO MINUS
042781,000234: 05,3613 56336 XCH DNECADR # WHILE PRESERVING A.
042782,000235: 05,3614 13716 TCF DNTMEXIT # GO SEND CHANNELS
042783,000236:
042784,000237: 05,3615 00006 WOZERO EXTEND
042785,000238: 05,3616 23265 QXCH C13QSAV
042786,000239: 05,3617 22070 LXCH RUPTREG1
042787,000240: 05,3620 06022 TC C13STALL
042788,000241:
042789,000242: 05,3621 22070 LXCH RUPTREG1
042790,000243: 05,3622 44745 CS BIT7
042791,000244: 05,3623 00006 EXTEND
042792,000245: 05,3624 03013 WAND CHAN13 # SET WORD ORDER CODE TO ZERO
042793,000246: 05,3625 01265 TC C13QSAV
042794,000247:
042795,000248: 05,3626 50336 DODNPTR INDEX DNECADR # DNECADR CONTAINS ADRES OF SUBLIST
042796,000249: 05,3627 00000 0 0 # CLEAR AND ADD LIST ENTRY INTO A.
042797,000250: 05,3630 10000 CCS A # IS THIS A SNAPSHOT SUBLIST
042798,000251: 05,3631 30336 CA DNECADR # NO, IT IS A REGULAR SUBLIST.
042799,000252: 05,3632 13702 TCF DOSUBLST # A MUST NOT BE ZERO.
042800,000253:
042801,000254: 05,3633 56336 XCH DNECADR # YES, IT IS A SNAPSHOT SUBLIST.
042802,000255: 05,3634 54337 TS SUBLIST # C(DNECADR) INTO SUBLIST
042803,000256: 05,3635 34755 CAF ZERO # A INTO A
042804,000257: 05,3636 56336 XCH TMINDEX # (NOTE.. TMINDEX = DNECADR)
042805,000258:
042806,000259:
042807,000260: # THE FOLLOWING CODING (FROM SNAPLOOP TO SNAPEND)IS FOR THE PURPOSE OF TAKING A SNAPSHOT OF 12 DP REGISTERS.
042808,000261: # THIS IS DONE BY SAVING 11 DP REGISTERS IN DNTMBUFF AND SENDING THE FIRST DP WORD IMMEDIATELY.
042809,000262: # THE SNAPSHOT PROCESSING IS THE MOST TIME CONSUMING AND THEREFORE THE CODING AND LIST STRUCTURE WERE DESIGNED
042810,000263: # TO MINIMIZE TIME. THE TIME OPTIMIZATION RESULTS IN RULES UNIQUE TO THE SNAPSHOT PORTION OF THE DOWNLIST.
042811,000264: # THESE RULES ARE......
042812,000265: # 1. ONLY 1DNADR'S CAN APPEAR IN THE SNAPSHOT SUBLIST
042813,000266: # 2. THE 1DNADR'S CANNOT REFER TO THE FIRST LOCATION IN ANY BANK.
042814,000267:
042815,000268: 05,3637 54003 SNAPLOOP TS EBANK # SET EBANK
042816,000269: 05,3640 74357 MASK LOW8 # ISOLATE RELATIVE ADDRESS
042817,000270: 05,3641 00006 EXTEND
042818,000271: 05,3642 50000 INDEX A
042819,000272: 05,3643 E3,1401 EBANK= 1401
042820,000273: 05,3643 31402 DCA 1401 # PICK UP 2 SNAPSHOT WORDS.
042821,000274: 05,3644 0340 EBANK= DNTMBUFF
042822,000275: 05,3644 50336 INDEX TMINDEX
042823,000276: 05,3645 52341 DXCH DNTMBUFF # STORE 2 SNAPSHOT WORDS IN BUFFER
042824,000277: 05,3646 24336 INCR TMINDEX # SET BUFFER INDEX FOR NEXT 2 WORDS.
042825,000278: 05,3647 24336 INCR TMINDEX
042826,000279: 05,3650 24337 SNAPAGN INCR SUBLIST # SET POINTER TO NEXT 2 WORDS OF SNAPSHOT
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Page 985
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042828,000281: 05,3651 50337 INDEX SUBLIST
042829,000282: 05,3652 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
042830,000283: 05,3653 10000 CCS A # TEST FOR LAST TWO WORDS OF SNAPSHOT.
042831,000284: 05,3654 13637 TCF SNAPLOOP # NOT LAST TWO.
042832,000285: 05,3655 03533 LDNPHAS2 GENADR DNPHASE2
042833,000286: 05,3656 54337 TS SUBLIST # YES, LAST. SAVE A.
042834,000287: 05,3657 37752 CA NEGONE # SET DNECADR AND
042835,000288: 05,3660 54336 TS DNECADR # SUBLIST POINTERS
042836,000289: 05,3661 56337 XCH SUBLIST # TO NEGATIVE VALUES.
042837,000290: 05,3662 54003 TS EBANK
042838,000291: 05,3663 74357 MASK LOW8
042839,000292: 05,3664 00006 EXTEND
042840,000293: 05,3665 50000 INDEX A
042841,000294: 05,3666 E3,1401 EBANK= 1401
042842,000295: 05,3666 31402 DCA 1401 # PICK UP FIRST 2 WORDS OF SNAPSHOT.
042843,000296: 05,3667 0340 EBANK= DNTMBUFF
042844,000297: 05,3667 13716 SNAPEND TCF DNTMEXIT # NOW GO SEND THEM.
042845,000298:
042846,000299: 05,3670 30336 FETCH2WD CA DNECADR
042847,000300: 05,3671 54003 TS EBANK # SET EBANK
042848,000301: 05,3672 74357 MASK LOW8 # ISOLATE RELATIVE ADDRESS
042849,000302: 05,3673 54001 TS L
042850,000303: 05,3674 33541 CA DNADRDCR # DECREMENT COUNT AND ECADR
042851,000304: 05,3675 26336 ADS DNECADR
042852,000305: 05,3676 00006 EXTEND
042853,000306: 05,3677 50001 INDEX L
042854,000307: 05,3700 E3,1400 EBANK= 1400
042855,000308: 05,3700 31401 DCA 1400 # PICK UP 2 DATA WORDS
042856,000309: 05,3701 0340 EBANK= DNTMBUFF
042857,000310: 05,3701 13716 TCF DNTMEXIT # NOW GO SEND THEM.
042858,000311:
042859,000312: 05,3702 54337 DOSUBLST TS SUBLIST # SET SUBLIST POINTER
042860,000313: 05,3703 50337 NEXTINSL INDEX SUBLIST
042861,000314: 05,3704 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
042862,000315: 05,3705 10000 CCS A # IS IT THE END OF THE SUBLIST
042863,000316: 05,3706 24337 INCR SUBLIST # NO-
042864,000317: 05,3707 13713 TCF +4
042865,000318: 05,3710 54337 TS SUBLIST # SAVE A.
042866,000319: 05,3711 37752 CA NEGONE # SET SUBLIST TO MINUS
042867,000320: 05,3712 56337 XCH SUBLIST # RETRIEVE A.
042868,000321: 05,3713 24000 +4 INCR A
042869,000322: 05,3714 54336 TS DNECADR # SAVE DNADR
042870,000323: 05,3715 13574 TCF SETWO +2 # GO USE COMMON CODING(PROBLEMS WOULD
042871,000324: # OCCUR IF THE PROGRAM ENCOUNTERED A
042872,000325: # DNPTR NOW)
042873,000326:
042874,000327: 05,3716 00006 DNTMEXIT EXTEND # DOWN-TELEMETRY EXIT
042875,000328: 05,3717 01034 WRITE DNTM1 # TO SEND A + L TO CHANNELS 34 + 35
042876,000329: 05,3720 30001 CA L # RESPECTIVELY
042877,000330: 05,3721 00006 TMEXITL EXTEND
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042879,000332: 05,3722 01035 WRITE DNTM2
042880,000333: 05,3723 15301 TMRESUME TCF RESUME # EXIT TELEMETRY PROGRAM VIA RESUME.
042881,000334:
042882,000335: 05,3724 7744 MINB12 EQUALS -1/8
042883,000336: 05,3724 0336 DNECADR EQUALS TMINDEX
042884,000337: 05,3724 0334 CTLIST EQUALS LDATALST
042885,000338: 05,3724 0337 SUBLIST EQUALS DNQ
042886,000339:
042887,000340: # MOD BY - DENSMORE - JUNE 1969 - ELIMINATE ERASABLE DUMP COUNT
042888,000341:
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042890,000343: # SUBROUTINE NAME- DNDUMP
042891,000344: # FUNCTIONAL DESCRIPTION - TO SEND (DUMP) ALL 8 BANKS OF ERASABLE STORAGE TWICE. BANKS ARE SENT ONE AT A TIME
042892,000345: # EACH BANK IS PRECEEDED BY AN ID WORD, SYNCH BITS, ECADR AND TIME1 FOLLOWED BY THE 256D WORDS OF EACH
042893,000346: # EBANK. EBANKS ARE DUMPED IN ORDER(I.E. EBANK 0 FIRST, THEN EBANK1 ETC.)
042894,000347: # CALLING SEQUENCE- THE GROUND OR ASTRONAUT BY KEYING V74E CAN INITIALIZE THE DUMP.
042895,000348: # AFTER KEYING IN V74E THE CURRENT DOWNLIST WILL BE IMMEDIATELY TERMINATED AND THE DOWNLINK ERASABLE DUMP
042896,000349: # WILL BEGIN.
042897,000350: # ONCE INITIATED THE DOWNLINK ERASABLE DUMP CAN BE TERMINATED (AND INTERRUPTED DOWNLIST REINSTATED) ONLY
042898,000351: # BY THE FOLLOWING:
042899,000352: # 1. A FRESH START
042900,000353: # 2. COMPLETION OF BOTH COMPLETE DUMPS
042901,000354: # 3. AND INVOLUNTARILY BY A RESTART.
042902,000355: # NORMAL EXIT MODE- TCF DNPHASE1
042903,000356: # ALARM OR ABORT MODE- NONE
042904,000357: # *SUBROUTINES CALLED- NONE.
042905,000358: # ERASABLE INITIALIZATION REQUIRED-
042906,000359: # NONE
042907,000360: # DEBRIS- DUMPLOC, DUMPSW, DNTMGOTO, EBANK AND CENTRAL REGISTERS
042908,000361: # TIMING- TIME(IN SECS) = ((NO.DUMPS)*(NO.EBANKS)* (WDSPEREBANK + NO.IDWDS)) / NO.WDSPERSEC
042909,000362: # TIME(IN SECS) = ( 4 )*( 8 )* ( 256 + 4 ) / 100
042910,000363: # THUS TIME(IN SECS TO SEND DUMP OF ERASABLE 4 TIMES VIA DOWNLINK) = 83.2 SECONDS
042911,000364:
042912,000365: # STRUCTURE OF ONE EBANK AS IT IS SENT BY DOWNLINK PROGRAM-
042913,000366: # (REMINDER-THIS ONLY DESCRIBES ONE OF THE 8 EBANKS X 4 (DUMPS) = 32 EBANKS WHICH WILL BE SENT BY DNDUMP)
042914,000367: # DOWNLIST W
042915,000368: # WORD TAKEN FROM CONTENTS OF EXAMPLE O COMMENTS
042916,000369:
042917,000370: # 1 ERASID 0177X 0 DOWNLIST I.D. FOR DOWNLINK ERASABLE DUMP (X=7 CSM, 6 LM)
042918,000371: # 2 LOWIDCOD 77340 1 DOWNLINK SYNCH BITS.(SAME ONE USED IN ALL OTHER DOWNLISTS)
042919,000372: # 3 DUMPLOC 13400 1 (SEE NOTES ON DUMPLOC)1= 3RD ERAS DUMP, 3400=ECADR OF 5TH WD
042920,000373: # 4 TIME1 14120 1 TIME IN CENTISECONDS
042921,000374: # 5 FIRST WORD OF EBANK X 03400 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1400 (ECADR 3400)
042922,000375: # 6 2ND WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1401 (ECADR 3401)
042923,000376: # 7 3RD WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1402 (ECADR 3402)
042924,000377: # . 1
042925,000378: # . 1
042926,000379: # . 1
042927,000380: # 260D 256TH WORD OF EBANK X 03777 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1777 (ECADR 3777)
042928,000381:
042929,000382: # NOTE- DUMPLOC CONTAINS THE COUNTER AND ECADR FOR EACH WORD BEING SENT.
042930,000383: # THE BIT STRUCTURE OF DUMPLOC IS FOLLOWS---
042931,000384: # X = NOT USED
042932,000385: # X ABC EEE RRRRRRRR ABC = ERASABLE DUMP COUNTER(I.E. ABC = 0,1,2 OR 3 WHICH MEANS THAT
042933,000386: # COMPLETE ERASABLE DUMP NUMBER 1,2,3 OR 4 RESPECTIVELY IS IN PROGRESS)
042934,000387: # EEE = EBANK BITS
042935,000388: # RRRRRRRR = RELATIVE ADDRESS WITHIN AN EBANK.
042936,000389:
042937,000390: 05,3724 34755 DNDUMPI CA ZERO # INITIALIZE DOWNLINK
042938,000391: 05,3725 54336 TS DUMPLOC # ERASABLE DUMP
042939,000392: 05,3726 03767 +2 TC SENDID # GO SEND ID AND SYNCH BITS
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042941,000394: 05,3727 33736 CA LDNDUMP1 # SET DNTMGOTO
042942,000395: 05,3730 54335 TS DNTMGOTO # TO LOCATION FOR NEXT PASS
042943,000396: 05,3731 30025 CA TIME1 # PLACE TIME1
042944,000397: 05,3732 56001 XCH L # INTO L
042945,000398: 05,3733 30336 CA DUMPLOC # AND ECADR OF THIS EBANK INTO A
042946,000399: 05,3734 13716 TCF DNTMEXIT # SEND DUMPLOC AND TIME1
042947,000400:
042948,000401: 05,3735 03737 LDNDUMP ADRES DNDUMP
042949,000402: 05,3736 03751 LDNDUMP1 ADRES DNDUMP1
042950,000403:
042951,000404: 05,3737 34752 DNDUMP CA TWO # INCREMENT ECADR IN DUMPLOC
042952,000405: 05,3740 26336 ADS DUMPLOC # TO NEXT DP WORD TO BE
042953,000406: 05,3741 74357 MASK LOW8 # DUMPED AND SAVE IT.
042954,000407: 05,3742 10000 CCS A # IS THIS THE BEGINNING OF A NEW EBANK
042955,000408: 05,3743 13753 TCF DNDUMP2 # NO- THEN CONTINUE DUMPING
042956,000409: 05,3744 30336 CA DUMPLOC # YES- IS THIS THE END OF THE
042957,000410: 05,3745 74737 MASK BIT13 # SECOND COMPLETE ERASABLE DUMP?
042958,000411: 05,3746 00006 EXTEND
042959,000412: 05,3747 13726 BZF DNDUMPI +2 # NO - GO BACK AND INITIALIZE NEXT BANK
042960,000413: 05,3750 13525 TCF DNPHASE1 # YES - SEND DOWNLIST AGAIN
042961,000414: 05,3751 33735 DNDUMP1 CA LDNDUMP # SET DNTMGOTO
042962,000415: 05,3752 54335 TS DNTMGOTO # FOR WORDS 3 TO 256D OF CURRENT EBANK
042963,000416:
042964,000417: 05,3753 30336 DNDUMP2 CA DUMPLOC
042965,000418: 05,3754 54003 TS EBANK # SET EBANK
042966,000419: 05,3755 74357 MASK LOW8 # ISOLATE RELATIVE ADDRESS.
042967,000420: 05,3756 54002 TS Q # (NOTE: MASK INSTRUCTION IS USED TO PICK
042968,000421: 05,3757 34754 CA NEG0 # UP ERASABLE REGISTERS SO THAT EDITING
042969,000422: 05,3760 54001 TS L # REGISTERS 20-23 WILL NOT BE ALTERED.)
042970,000423: 05,3761 50002 INDEX Q
042971,000424: 05,3762 E3,1400 EBANK= 1400 # PICK UP LOW ORDER REGISTER OF PAIR
042972,000425: 05,3762 71401 MASK 1401 # OF ERASABLE REGISTERS.
042973,000426: 05,3763 56001 XCH L
042974,000427: 05,3764 50002 INDEX Q # PICK UP HIGH ORDER REGISTER OF PAIR
042975,000428: 05,3765 71400 MASK 1400 # OF ERASABLE REGISTERS.
042976,000429: 05,3766 0340 EBANK= DNTMBUFF
042977,000430: 05,3766 13716 TCF DNTMEXIT # GO SEND THEM
042978,000431:
042979,000432:
042980,000433: 05,3767 00006 SENDID EXTEND # **ENTRANCE USED BY ERASABLE DUMP PROG.**
042981,000434: 05,3770 22335 QXCH DNTMGOTO # SET DNTMGOTO SO NEXT TIME PROG WILL GO
042982,000435: 05,3771 35011 CAF ERASID # TO LOCATION FOLLOWING :TC SENDID:
042983,000436:
042984,000437: 05,3772 54001 TS L # **ENTRANCE USED BY REGULAR DOWNLINK PG**
042985,000438: 05,3773 03615 TC WOZERO # GO SET WORD ORDER CODE TO ZERO
042986,000439: 05,3774 32065 CAF LOWIDCOD # PLACE SPECIAL ID CODE INTO L
042987,000440: 05,3775 56001 XCH L # AND ID BACK INTO A
042988,000441: 05,3776 13716 TCF DNTMEXIT # SEND DOWNLIST ID CODE(S).
End of include-file DOWN-TELEMETRY_PROGRAM.agc. Parent file is MAIN.agc