Source Code
048266,000001: # Copyright: Public domain.
048267,000002: # Filename: DOWN-TELEMETRY_PROGRAM.agc
048268,000003: # Purpose: Part of the source code for Comanche, build 055. It
048269,000004: # is part of the source code for the Command Module's
048270,000005: # (CM) Apollo Guidance Computer (AGC), Apollo 11.
048271,000006: # Assembler: yaYUL
048272,000007: # Reference: pp. 1093-1102
048273,000008: # Contact: Ron Burkey <info@sandroid.org>
048274,000009: # Website: http://www.ibiblio.org/apollo.
048275,000010: # Mod history: 2009-05-08 RSB Adapted from Colossus249/ file of same name
048276,000011: # and page images. Corrected various typos
048277,000012: # in the transcription of program comments,
048278,000013: # and these should be back-ported to
048279,000014: # Colossus249.
048280,000015:
048281,000016: # The contents of the "Comanche055" files, in general, are transcribed
048282,000017: # from scanned documents.
048283,000018:
048284,000019: # Assemble revision 055 of AGC program Comanche by NASA
048285,000020: # 2021113-051. April 1, 1969.
048286,000021:
048287,000022: # This AGC program shall also be referred to as Colossus 2A
048288,000023:
048289,000024: # Prepared by
048290,000025: # Massachussets Institute of Technology
048291,000026: # 75 Cambridge Parkway
048292,000027: # Cambridge, Massachusetts
048293,000028:
048294,000029: # under NASA contract NAS 9-4065.
048295,000030:
048296,000031: # Refer directly to the online document mentioned above for further
048297,000032: # information. Please report any errors to info@sandroid.org.
048298,000033:
048299,000034: # Page 1093
048300,000035: # PROGRAM NAME -- DOWN TELEMETRY PROGRAM
048301,000036: # MOD NO. -- 0 TO COMPLETELY REWRITE THE DOWN TELEMETRY PROGRAM AND DOWNLINK ERASABLE DUMP PROGRAM FOR THE
048302,000037: # PURPOSE OF SAVING APPROXIMATELY 150 WORDS OF CORE STORAGE.
048303,000038: # THIS CHANGE REQUIRES AN ENTIRELY NEW METHOD OF SPECIFYING DOWNLINK LISTS. REFER TO DOWNLINK
048304,000039: # LISTS LOG SECTION FOR MORE DETAILS. HOWEVER THIS CHANGES WILL NOT AFFECT THE GROUND PROCESSING
048305,000040: # OF DOWN TELEMETRY DATA.
048306,000041: # MOD BY -- KILROY, SMITH, DEWITT
048307,000042: # DATE -- 02 OCT 67
048308,000043: # AUTHORS -- KILROY, SMITH, DWWITT, DEWOLF, FAGIN
048309,000044: # LOG SECTION -- DOWN-TELEMETRY PROGRAM
048310,000045:
048311,000046: # FUNCTIONAL DESCRIPTION -- THIS ROUTINE IS INITIATED BY TELEMETRY END
048312,000047: # PULSE FROM THE DOWNLINK TELEMETRY CONVERTER. THIS PULSE OCCURS
048313,000048: # AT 50 TIMES PER SEC (EVERY 20 MS) THEREFORE DODOWNTM IS
048314,000049: # EXECUTED AT THESE RATES. THIS ROUTINE SELECTS THE APPROPRIATE
048315,000050: # AGC DATA TO BE TRANSMITTED DOWNLINK AND LOADS IT INTO OUTPUT
048316,000051: # CHANNELS 34 AND 35. THE INFORMATION IS THEN GATED OUT FROM THE
048317,000052: # LGC IN SERIAL FASHION.
048318,000053:
048319,000054: # THIS PROGRAM IS CODED FOR A 2 SECOND DOWNLIST. SINCE DOWNRUPTS
048320,000055: # OCCUR EVERY 20 MS AND 2 AGC COMPUTER WORDS CAN BE PLACED IN
048321,000056: # CHANNELS 34 AND 35 DURING EACH DOWNRUPT THE PROGRAM IS CAPABLE
048322,000057: # OF SENDING 200 AGC WORDS EVERY 2 SECONDS.
048323,000058:
048324,000059: # CALLING SEQUENCE -- NONE
048325,000060: # PROGRAM IS ENTERED VIA TCF DODOWNTM WHICH IS EXECUTED AS A
048326,000061: # RESULT OF A DOWNRUPT. CONTROL IS RETURNED VIA TCF RESUME WHICH
048327,000062: # IN EFFECT IS A RESUME.
048328,000063:
048329,000064: # SUBROUTINES CALLED -- NONE
048330,000065:
048331,000066: # NORMAL EXIT MODE -- TCF RESUME
048332,000067:
048333,000068: # ALARM OR ABORT EXIT MODE -- NONE
048334,000069:
048335,000070: # RESTART PROTECTION:
048336,000071: # ON A FRESH START AND RESTART THE `STARTSUB' SUBROUTINE WILL INITIALIZE THE DOWNLIST POINTER (ACTUALLY
048337,000072: # DNTMGOTO) TO THE BEGINNING OF THE CURRENT DOWNLIST (I.E., CURRENT CONTENTS OF DNLSTADR). THIS HAS THE
048338,000073: # EFFECT OF IGNORING THE REMAINDER OF THE DOWNLIST WHICH THE DOWN-TELEMETRY PROGRAM WAS WORKING ON WHEN
048339,000074: # THE RESTART (OR FRESH START) OCCURRED AND RESUME DOWN TELEMETRY FROM THE BEGINNING OF THE CURRENT
048340,000075: # DOWNLIST.
048341,000076:
048342,000077: # ALSO OF INTEREST IS THE FACT THAT ON A RESTART THE AGC WILL ZERO DOWNLINK CHANNELS 13, 34 AND 35.
048343,000078:
048344,000079: # DOWNLINK LIST SELECTION:
048345,000080: # THE APPROPRIATE DOWNLINK LISTS ARE SELECTED BY THE FOLLOWING:
048346,000081: # 1. FRESH START
048347,000082: # 2. V37EXXE WHERE XX = THE MAJOR MODE BEING SELECTED.
048348,000083: # 3. UPDATE PROGRAM (P27)
048349,000084: # 4. NON-V37 SELECTABLE TYPE PROGRAMS (E.G., AGS INITIALIZATION (SUNDANCE, LUMINARY) AND P61-P62
048350,000085: # TRANSITIONS (COLOSSUS) ETC.).
048351,000086:
048352,000087: # DOWNLINK LIST RULES AND LIMITATIONS:
048353,000088: # READ SECTION(S) WHICH FOLLOW `DEBRIS' WRITEUP.
048354,000089:
048355,000090: # OUTPUT -- EVERY 2 SECONDS 100 DOUBLE PRECISION WORDS (I.E., 200 LGC
048356,000091: # COMPUTER WORDS) ARE TRANSMITTED VIA DOWNLINK.
048357,000092:
048358,000093: # ERASABLE INITIALIZATION REQUIRED -- NONE
048359,000094: # `DNTMGOTO' AND `DNLSTADR' ARE INITIALIZED BY THE FRESH START PROGRAM.
048360,000095:
048361,000096: # DEBRIS (ERASABLE LOCATIONS DESTROYED BY THIS PROGRAM) --
048362,000097: # LDATALST, DNTMBUFF TO DNTMBUFF +21D, TMINDEX, DNQ.
048363,000098: # Page 1094
048364,000099: # (No source on this page of the original assembly listing.)
048365,000100:
048366,000101: # Page 1095
048367,000102: # DODOWNTM IS ENTERED EVERY 20 MS BY AN INTERRUPT TRIGGERED BY THE
048368,000103: # RECEIPT OF AN ENDPULSE FROM THE SPACECRAFT TELEMETRY PROGRAMMER.
048369,000104:
048370,000105: # NOTES REGARDING DOWNLINK LISTS ASSOCIATED WITH THIS PROGRAM:
048371,000106: # 1. DOWNLISTS. DOWNLISTS MUST BE COMPILED IN THE SAME BANK AS THE
048372,000107: # DOWN-TELEMETRY PROGRAM. THIS IS DONE FOR EASE OF CODING, FASTER
048373,000108: # EXECUTION.
048374,000109: # 2. EACH DOWNLINK LIST CONSISTES OF A CONTROL LIST AND A NUMBER OF
048375,000110: # SUBLISTS.
048376,000111: # 3. A SUBLIST REFERS TO A SNAPSHOT OR DATA COMMON TO THE SAME OR OTHER
048377,000112: # DOWNLINK LISTS. ANY SUBLIST CONTAINING COMMON DATA NEEDS TO BE
048378,000113: # CODED ONLY ONCE FOR THE APPLICABLE DOWNLINK LISTS.
048379,000114: # 4. SNAPSHOT SUBLISTS REFER SPECIFICALLY TO HOMOGENEOUS DATA WHICH MUST BE
048380,000115: # SAVED IN A BUFFER DURING ONE DOWNRUPT.
048381,000116: # 5. THE 1DNADR FOR THE 1ST WORD OF SNAPSHOT DATA IS FOUND AT THE END
048382,000117: # OF EACH SNAPSHOT SUBLIST, SINCE THE PROGRAM CODING SENDS THIS DP WORD
048383,000118: # IMMEDIATELY AFTER STORING THE OTHERS IN THE SNAPSHOT BUFFER.
048384,000119: # 6. ALL LISTS ARE COMBINATIONS OF CODED ERASABLE ADDRESS CONSTANTS
048385,000120: # CREATED FOR THE DOWNLIST PROGRAM.
048386,000121: # A. 1DNADR 1-WORD DOWNLIST ADDRESS.
048387,000122: # SAME AS ECADR, BUT USED WHEN THE WORD ADDRESSED IS THE LEFT
048388,000123: # HALF OF A DOUBLE-PRECISION WORD FOR DOWN TELEMETRY.
048389,000124: # B. 2DNADR - 6DNADR N-WORD DOWNLIST ADDRESS, N = 2 - 6.
048390,000125: # SAME AS 1DNADR, BUT WTIH THE 4 UNUSED BITS OF THE ECADR FORMAT
048391,000126: # FILLED IN WITH 0001-0101. USED TO POINT TO A LIST OF N DOUBLE-
048392,000127: # PRECISION WORDS, STORED CONSECUTIVELY, FOR DOWN TELEMETRY.
048393,000128: # C. DNCHAN DOWNLIST CHANNEL ADDRESS.
048394,000129: # SAME AS 1DNADR, BUT WITH PREFIX BITS 0111. USED TO POINT TO
048395,000130: # A PAIR OF CHANNELS FOR DOWN TELEMETRY.
048396,000131: # D. DNPTR DOWN-TELEMETRY SUBLIST POINTER.
048397,000132: # SAME AS CAF BUT TAGGES AS A CONSTANT. USED IN CONTROL LIST TO POINT TO A SUBLIST.
048398,000133: # CAUTION --- A DNPTR CANNOT BE USED IN A SUBLIST.
048399,000134: # 7. THE WORD ORDER CODE IS SET TO ZERO AT THE BEGINNING OF EACH DOWNLIST (I.E., CONTROL LIST) AND WHEN
048400,000135: # A `1DNADR TIME2' IS DETECTED IN THE CONTROL LIST (ONLY).
048401,000136: # 8. IN THE SNAPSHOT SUBLIST ONLY, THE DNADR'S CANNOT POINT TO THE FIRST WORD OF ANY EBANK.
048402,000137:
048403,000138: # DOWNLIST LIST RESTRICTIONS:
048404,000139: # (THE FOLLOWING POINTS MAY BE LISTED ELSEWHERE BUT ARE LISTED HERE SO IT IS CLEAR THAT THESE THINGS CANNOT BE
048405,000140: # DONE)
048406,000141: # 1. SNAPSHOT DOWNLIST:
048407,000142: # (A) CANNOT CONTAIN THE FOLLOWING ECADRS (I.E., 1DNADR'S): Q, 400, 1000, 1400, 2000, 2400, 3000, 3400.
048408,000143: # (B) CAN CONTAIN ONLY 1DNADR'S
048409,000144: # 2. ALL DOWNLINKED DATA (EXCEPT CHANNELS) IS PICKED UP BY A DCA SO DOWNLINK LISTS CANNOT CONTAIN THE
048410,000145: # EQUIVALENT OF THE FOLLOWING ECADRS (I.E., IDNADRS): 377, 777, 1377, 1777, 2377, 2777, 3377, 3777.
048411,000146: # (NOTE: TE TERM `EQUIVALENT' MEANT THAT THE IDNADR TO 6DNADR WILL BE PROCESSED LIKE 1 TO 6 ECADRS)
048412,000147: # 3. CONTROL LISTS AND SUBLISTS CANNOT HAVE ENTRIES = OCTAL 00000 OR OCTAL 77777
048413,000148: # Page 1096
048414,000149: # 4. THE `1DNADR TIME2' WHICH WILL CAUSE THE DOWNLINT PROGRAM TO SET THE WORDER CODE TO 3 MUST APPEAR IN THE
048415,000150: # CONTROL SECTION OF THE DOWNLIST.
048416,000151: # 5. `DNCHAN 0' CANNOT BE USED.
048417,000152: # 6. `DNPTR 0' CANNOT BE USED.
048418,000153: # 7. DNPTR CANNOT APPEAR IN A SUBLIST.
048419,000154:
048420,000155: # EBANK SETTINGS
048421,000156: # IN THE PROCESS OF SETTING THE EBANK (WHEN PICKING UP DOWNLINK DATA) THE DOWN TELEMETRY PROGRAM PUTS
048422,000157: # `GARBAGE' INTO BITS15-12 OF EBANK. HUGH BLAIR-SMITH WARNS US THAT BITS15-12 OF EBANK MAY BECOME
048423,000158: # SIGNIFICANT SOMEDAY IN THE FUTURE. IF/WHEN THAT HAPPENS, THE PROGRAM SHOULD INSURE (BY MASKING ETC.)
048424,000159: # THAT BITS 15-12 OF EBANK ARE ZERO.
048425,000160:
048426,000161: # INITIALIZATION REQUIRED -- TO INTERRUPT CURRENT LIST AND START A NEW ONE.
048427,000162: # 1. ADRES OF DOWNLINK LIST INTO DNLSTADR
048428,000163: # 2. NEGONE INTO SUBLIST
048429,000164: # 3. NEGONE INTO DNECADR
048430,000165:
048431,000166: 22,3510 BANK 22
048432,000167: 05,2000 SETLOC DOWNTELM
048433,000168: 05,2000 BANK
048434,000169:
048435,000170: 05,3521 0340 EBANK= DNTMBUFF
048436,000171:
048437,000172: 05,3521 COUNT 05/DPROG
048438,000173:
048439,000174: 05,3521 54016 DODOWNTM TS BANKRUPT
048440,000175: 05,3522 00006 EXTEND
048441,000176: 05,3523 22012 QXCH QRUPT # SAVE Q
048442,000177: 05,3524 35011 CA BIT7 # SET WORD ORDER CODE TO 1. EXCEPTION: AT
048443,000178: 05,3525 00006 EXTEND # THE BEGINNING OF EACH LIST THE WORD
048444,000179: 05,3526 05013 WOR CHAN13 # CODE WILL BE SET BACK TO 0.
048445,000180: 05,3527 00335 TC DNTMGOTO # GOTO APPROPRIATE PHASE OF PROGRAM
048446,000181:
048447,000182: 05,3530 37716 DNPHASE1 CA NEGONE # INITIALIZE ALL CONTROL WORDS
048448,000183: 05,3531 54337 TS SUBLIST # WORDS TO MINUS ONE
048449,000184: 05,3532 54336 TS DNECADR
048450,000185: 05,3533 33653 CA LDNPHAS2 # SET DNTMGOTO = 0 ALL SUSEQUENT DOWRUPTS
048451,000186: 05,3534 54335 TS DNTMGOTO # GO TO DNPHASE2
048452,000187: 05,3535 13551 TCF NEWLIST
048453,000188: 05,3536 10336 DNPHASE2 CCS DNECADR # SENDING OF DATA IN PROGRESS
048454,000189: 05,3537 03666 DODNADR TC FETCH2WD # YES -- THEN FETCH THE NEXT 2 SP WORDS
048455,000190: 05,3540 77753 MINTIME2 -1DNADR TIME2 # NEGATIVE OF TIME2 1DNADR
048456,000191: 05,3541 13542 TCF +1 # (ECADR OF 3776 + 74001 = 77777)
048457,000192:
048458,000193: 05,3542 10337 CCS SUBLIST # IS THE SUBLIST IN CONTROL
048459,000194: # Page 1097
048460,000195: 05,3543 13701 TCF NEXTINSL # YES
048461,000196: 05,3544 74001 DNADRDCR OCT 74001 # DNADR COUNT AND ECADR DECREMENTER
048462,000197:
048463,000198: 05,3545 30334 CHKLIST CA CTLIST
048464,000199: 05,3546 00006 EXTEND
048465,000200: 05,3547 63551 BZMF NEWLIST # IT WILL BE NEGATIVE AT END OF LIST
048466,000201: 05,3550 13556 TCF NEXTINCL
048467,000202: 05,3551 50332 NEWLIST INDEX DNLSTCOD
048468,000203: 05,3552 32335 CA DNTABLE # INITIALIZE CTLIST WITH
048469,000204: 05,3553 54334 TS CTLIST # STARTING ADDRESS OF NEW LIST
048470,000205: 05,3554 40332 CS DNLSTCOD
048471,000206: 05,3555 13771 TCF SENDID +3
048472,000207: 05,3556 50334 NEXTINCL INDEX CTLIST
048473,000208: 05,3557 30000 CA 0
048474,000209: 05,3560 10000 CCS A
048475,000210: 05,3561 24334 INCR CTLIST # SET POINTER TO PICK UP NEXT CTLIST WORD
048476,000211: 05,3562 13566 TCF +4 # ON NEXT ENTRY TO PROG. (A SHOULD NOT =0)
048477,000212: 05,3563 56334 XCH CTLIST # SET CTLIST TO NEGATIVE AND PLACE(CODING)
048478,000213: 05,3564 40000 COM # UNCOMPLEMENTED DNADR INTO A. (FOR LA)
048479,000214: 05,3565 56334 XCH CTLIST # (ST IN )
048480,000215: 05,3566 24000 +4 INCR A # (CTLIST)
048481,000216: 05,3567 54336 TS DNECADR # SAVE DNADR
048482,000217: 05,3570 63540 AD MINTIME2 # TEST FOR TIME2 (NEG. OF ECADR)
048483,000218: 05,3571 10000 CCS A
048484,000219: 05,3572 13576 TCF SETWO +1 # DON'T SET WORD ORDER CODE
048485,000220: 05,3573 47777 MINB1314 OCT 47777 # MINUS BIT 13 AND 14 (CAN'T GET HERE)
048486,000221: 05,3574 13576 TCF SETWO +1 # DON'T SET WORD ORDER CODE
048487,000222: 05,3575 03620 SETWO TC WOZERO # GO SET WORD ORDER CODE TO ZERO.
048488,000223: 05,3576 30336 +1 CA DNECADR # RELOAD A WITH THE DNADR.
048489,000224: 05,3577 63573 +2 AD MINB1314 # IS THIS A REGULAR DNADR?
048490,000225: 05,3600 00006 EXTEND
048491,000226: 05,3601 63666 BZMF FETCH2WD # YES. (A MUST NEVER BE ZERO)
048492,000227: 05,3602 67710 AD MINB12 # NO. IS IT A POINTER (DNPTR) OR A
048493,000228: 05,3603 00006 EXTEND # CHANNEL(DNCHAN)
048494,000229: 05,3604 63624 BZMF DODNPTR # IT'S A POINTER. (A MUST NEVER BE ZERO)
048495,000230:
048496,000231: 05,3605 00006 DODNCHAN TC 6 # (EXECUTED AS EXTEND) IT'S A CHANNEL
048497,000232: 05,3606 50336 INDEX DNECADR
048498,000233: 05,3607 44000 INDEX 0 -4000 # (EXECUTED AS READ)
048499,000234: 05,3610 54001 TS L
048500,000235: 05,3611 00006 TC 6 # (EXECUTED AS EXTEND)
048501,000236: 05,3612 50336 INDEX DNECADR
048502,000237: 05,3613 43777 INDEX 0 -4001 # (EXECUTED AS READ)
048503,000238: 05,3614 54336 TS DNECADR # SET DNECADR
048504,000239: 05,3615 37716 CA NEGONE # TO MINUS
048505,000240: 05,3616 56336 XCH DNECADR # WHILE PRESERVING A.
048506,000241: 05,3617 13714 TCF DNTMEXIT # GO SEND CHANNELS
048507,000242:
048508,000243: 05,3620 45011 WOZERO CS BIT7
048509,000244: 05,3621 00006 EXTEND
048510,000245: # Page 1098
048511,000246: 05,3622 03013 WAND CHAN13 # SET WORD ORDER CODE TO ZERO
048512,000247: 05,3623 00002 TC Q # RETURN TO CALLER
048513,000248:
048514,000249: 05,3624 50336 DODNPTR INDEX DNECADR # DNECADR CONTAINS ADRES OF SUBLIST
048515,000250: 05,3625 00000 0 0 # CLEAR AND ADD LIST ENTRY INTO A.
048516,000251: 05,3626 10000 CCS A # IS THIS A SNAPSHOT SUBLIST
048517,000252: 05,3627 30336 CA DNECADR # NO, IT IS A REGULAR SUBLIST.
048518,000253: 05,3630 13700 TCF DOSUBLST # A MUST NOT BE ZERO.
048519,000254:
048520,000255: 05,3631 56336 XCH DNECADR # YES. IT IS A SNAPSHOT SUBLIST.
048521,000256: 05,3632 54337 TS SUBLIST # C(DNECADR) INTO SUBLIST
048522,000257: 05,3633 35021 CAF ZERO # A INTO A
048523,000258: 05,3634 56336 XCH TMINDEX # (NOTE: TMINDEX = DNECADR)
048524,000259:
048525,000260: # THE FOLLOWING CODING (FROM SNAPLOOP TO SNAPEND) IS FOR THE PURPOSE OF TAKING A SNAPSHOT OF 12 DP REGISTERS.
048526,000261: # THIS IS DONE BY SAVING 11 DP REGISTERS IN DNTMBUFF AND SENDING THE FIRST DP WORD IMMEDIATELY.
048527,000262: # THE SNAPSHOT PROCESSING IS THE MOST TIME CONSUMING AND THEREFORE THE CODING AND LIST STRUCTURE WERE DESIGNED
048528,000263: # TO MINIMIZE TIME. THE TIME OPTIMIZATION RESULTS IN RULES UNIQUE TO THE SNAPSHOT PORTION OF THE DOWNLIST.
048529,000264: # THESE RULES ARE ......
048530,000265: # 1. ONLY 1DNADR'S CAN APPEAR IN THE SNAPSHOT SUBLIST
048531,000266: # 2. THE 1DNADR'S CANNOT REFER TO THE FIRST LOCATION IN ANY BANK.
048532,000267:
048533,000268: 05,3635 54003 SNAPLOOP TS EBANK # SET EBANK
048534,000269: 05,3636 74373 MASK LOW8 # ISOLATE RELATIVE ADDRESS
048535,000270: 05,3637 00006 EXTEND
048536,000271: 05,3640 50000 INDEX A
048537,000272: 05,3641 E3,1401 EBANK= 1401
048538,000273: 05,3641 31402 DCA 1401 # PICK UP 2 SNAPSHOT WORDS.
048539,000274: 05,3642 0340 EBANK= DNTMBUFF
048540,000275: 05,3642 50336 INDEX TMINDEX
048541,000276: 05,3643 52341 DXCH DNTMBUFF # STORE 2 SNAPSHOT WORDS IN BUFFER
048542,000277: 05,3644 24336 INCR TMINDEX # SET BUFFER INDEX FOR NEXT 2 WORDS.
048543,000278: 05,3645 24336 INCR TMINDEX
048544,000279: 05,3646 24337 SNAPAGN INCR SUBLIST # SET POINTER TO NEXT 2 WORDS OF SNAPSHOT
048545,000280: 05,3647 50337 INDEX SUBLIST
048546,000281: 05,3650 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
048547,000282: 05,3651 10000 CCS A # TEST FOR LAST TWO WORDS OF SNAPSHOT.
048548,000283: 05,3652 13635 TCF SNAPLOOP # NOT LAST TWO.
048549,000284: 05,3653 03536 LDNPHAS2 GENADR DNPHASE2
048550,000285: 05,3654 54337 TS SUBLIST # YES, LAST. SAVE A.
048551,000286: 05,3655 37716 CA NEGONE # SET DNECADR AND
048552,000287: 05,3656 54336 TS DNECADR # SUBLIST POINTERS
048553,000288: 05,3657 56337 XCH SUBLIST # TO NEGATIVE VALUES
048554,000289: 05,3660 54003 TS EBANK
048555,000290: 05,3661 74373 MASK LOW8
048556,000291: 05,3662 00006 EXTEND
048557,000292: 05,3663 50000 INDEX A
048558,000293: 05,3664 E3,1401 EBANK= 1401
048559,000294: # Page 1099
048560,000295: 05,3664 31402 DCA 1401 # PICK UP FIRST 2 WORDS OF SNAPSHOT.
048561,000296: 05,3665 0340 EBANK= DNTMBUFF
048562,000297: 05,3665 13714 SNAPEND TCF DNTMEXIT # NOW GO SEND THEM.
048563,000298:
048564,000299: 05,3666 30336 FETCH2WD CA DNECADR
048565,000300: 05,3667 54003 TS EBANK # SET EBANK
048566,000301: 05,3670 74373 MASK LOW8 # ISOLATE RELATIVE ADDRESS
048567,000302: 05,3671 54001 TS L
048568,000303: 05,3672 33544 CA DNADRDCR # DECREMENT COUNT AND ECADR
048569,000304: 05,3673 26336 ADS DNECADR
048570,000305: 05,3674 00006 EXTEND
048571,000306: 05,3675 50001 INDEX L
048572,000307: 05,3676 E3,1400 EBANK= 1400
048573,000308: 05,3676 31401 DCA 1400 # PICK UP 2 DATA WORDS
048574,000309: 05,3677 0340 EBANK= DNTMBUFF
048575,000310: 05,3677 13714 TCF DNTMEXIT # NOW GO SEND THEM.
048576,000311:
048577,000312: 05,3700 54337 DOSUBLST TS SUBLIST # SET SUBLIST POINTER
048578,000313: 05,3701 50337 NEXTINSL INDEX SUBLIST
048579,000314: 05,3702 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
048580,000315: 05,3703 10000 CCS A # IS IT THE END OF THE SUBLIST
048581,000316: 05,3704 24337 INCR SUBLIST # NO --
048582,000317: 05,3705 13711 TCF +4
048583,000318: 05,3706 54337 TS SUBLIST # SAVE A.
048584,000319: 05,3707 37716 CA NEGONE # SET SUBLIST TO MINUS
048585,000320: 05,3710 56337 XCH SUBLIST # RETRIEVE A.
048586,000321: 05,3711 24000 +4 INCR A
048587,000322: 05,3712 54336 TS DNECADR # SAVE DNADR
048588,000323: 05,3713 13577 TCF SETWO +2 # GO USE COMMON CODING (PROBLEMS WOULD
048589,000324: # OCCUR IF THE PROGRAM ENCOUNTERED A
048590,000325: # DNPTR NOW)
048591,000326:
048592,000327: 05,3714 00006 DNTMEXIT EXTEND # DOWN-TELEMETRY EXIT
048593,000328: 05,3715 01034 WRITE DNTM1 # TO SEND A + L TO CHANNELS 34 + 35
048594,000329: 05,3716 30001 CA L # RESPECTIVELY
048595,000330: 05,3717 00006 TMEXITL EXTEND
048596,000331: 05,3720 01035 WRITE DNTM2
048597,000332: 05,3721 15333 TMRESUME TCF RESUME # EXIT TELEMTRY PROGRAM VIA RESUME.
048598,000333:
048599,000334: 05,3722 7710 MINB12 EQUALS -1/8
048600,000335: 05,3722 0336 DNECADR EQUALS TMINDEX
048601,000336: 05,3722 0334 CTLIST EQUALS LDATALST
048602,000337: 05,3722 0337 SUBLIST EQUALS DNQ
048603,000338:
048604,000339: # Page 1100
048605,000340: # SUBROUTINE NAME -- DNDUMP
048606,000341:
048607,000342: # FUNCTIONAL DESCRIPTION -- TO SEND (DUMP) ALL 8 BANKS OF ERASABLE STORAGE TWICE. BANKS ARE SENT ONE AT A TIME
048608,000343: # EACH BANK IS PRECEDED BY AN ID WORD, SYNCH BITS, ECADR AND TIME1 FOLLOWED BY THE 256D WORDS OF EACH
048609,000344: # EBANK. EBANKS ARE DUMPED IN ORDER (I.E., EBANK 0 FIRST, THEN EBANK1 ETC.)
048610,000345:
048611,000346: # CALLING SEQUENCE -- THE GROUND OR ASTRONAUT BY KEYING V74E CAN INITIALIZE THE DUMP.
048612,000347: # AFTER KEYING IN V74E THE CURRENT DOWNLIST WILL BE IMMEDIATELY TERMINATED AND THE DOWNLINK ERASABLE DUMP
048613,000348: # WILL BEGIN.
048614,000349:
048615,000350: # ONCE INITITIATED THE DOWNLINK ERASABLE DUMP CAN BE TERMINATED (AND INTERRUPTED DOWNLIST REINSTATED) ONLY
048616,000351: # BY THE FOLLOWING:
048617,000352:
048618,000353: # 1. A FRESH START
048619,000354: # 2. COMPLETION OF ALL DOWNLINK DUMPS REQUESTED (ACCORDING TO BITS SET IN DUMPCNT). NOTE THAT DUMPCNT
048620,000355: # CAN BE ALTERED BY A V21N01.
048621,000356: # 3. AND INVOLUNTARILY BY A RESTART.
048622,000357:
048623,000358: # NORMAL EXIT MODE -- TCF DNPHASE1
048624,000359:
048625,000360: # ALARM OR ABORT MODE -- NONE
048626,000361:
048627,000362: # *SUBROUTINES CALLED -- NONE
048628,000363:
048629,000364: # ERASABLE INITIALIZATION REQUIRED --
048630,000365: # DUMPCNT OCT 20000 IF 4 COMPLETE ERASABLE DUMPS ARE DESIRED
048631,000366: # DUMPCNT OCT 10000 IF 2 COMPLETE ERASABLE DUMPS ARE DESIRED
048632,000367: # DUMPCNT OCT 04000 IF 1 COMPLETE ERASABLE DUMP IS DESIRED
048633,000368:
048634,000369: # DEBRIS -- DUMPLOC, DUMPSW, DNTMGOTO, EBANK, AND CENTRAL REGISTERS
048635,000370:
048636,000371: # TIMING -- TIME (IN SECS) = ((NO.DUMPS)*(NO.EBANKS)*(WDSPEREBANK + NO.IDWDS)) / NO.WDSPERSEC
048637,000372: # TIME (IN SECS) = ( 4 )*( 8 )*( 256 + 4 ) / 100
048638,000373: # THUS TIME (IN SECS TO SEND DUMP OF ERASABLE 4 TIMES VIA DOWNLINK) = 83.2 SECONDS
048639,000374:
048640,000375: # STRUCTURE OF ONE EBANK AS IT IS SENT BY DOWNLINK PROGRAM --
048641,000376: # (REMINDER -- THIS ONLY DESCRIBES ONE OF THE 8 EBANKS X 4 (DUMPS) = 32 EBANKS WHICH WILL BE SENT BY DNDUMP)
048642,000377:
048643,000378: # DOWNLIST W
048644,000379: # WORD TAKEN FROM CONTENTS OF EXAMPLE O COMMENTS
048645,000380: # 1 ERASID 0177X 0 DOWNLIST I.D. FOR DOWNLINK ERASABLE DUMP (X=7 CSM, 6 LM)
048646,000381: # 2 LOWIDCOD 77340 1 DOWNLINK SYNCH BITS. (SAME ONE USED IN ALL OTHER DOWNLISTS)
048647,000382: # 3 DUMPLOC 13400 1 (SEE NOTES ON DUMPLOC) 1 = 3RD ERAS DUMP, 3400=ECADR OF 5TH WD
048648,000383: # 4 TIME1 14120 1 TIME IN CENTISECONDS
048649,000384: # 5 FIRST WORD OF EBANK X 03400 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1400 (ECADR 3400)
048650,000385: # 6 2ND WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1401 (ECADR 3401)
048651,000386: # 7. 3RD WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1402 (ECADR 3402)
048652,000387: # .
048653,000388: # .
048654,000389: # .
048655,000390: # 260D 256TH WORD OF EBANK X 03777 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1777 (ECADR 3777)
048656,000391:
048657,000392: # NOTE -- DUMPLOC CONTAINS THE COUNTER AND ECADR FOR EACH WORD BEING SENT.
048658,000393: # THE BIT STRUCTURE OF DUMPLOC IS FOLLOW --
048659,000394: # X = NOT USED
048660,000395: # X ABC EEE RRRRRRRR ABC = ERASABLE DUMP COUNTER (I.E. ABC = 0,1,2, OR 3 WHICH MEANS THAT
048661,000396: # COMPLETE ERASABLE DUMP NUMBER 1,2,3, OR 4 RESPECTIVELY IS IN PROGRESS)
048662,000397: # EEE = EBANK BITS
048663,000398: # RRRRRRRR = RELATIVE ADDRESS WITHIN AN EBANK
048664,000399:
048665,000400: # Page 1101
048666,000401: 05,3722 35021 DNDUMPI CA ZERO # INITIALIZE DOWNLINK
048667,000402: 05,3723 54336 TS DUMPLOC # ERASABLE DUMP
048668,000403: 05,3724 03766 +2 TC SENDID # GO SEND ID AND SYNCH BITS
048669,000404: 05,3725 33734 CA LDNDUMP1 # SET DNTMGOTO
048670,000405: 05,3726 54335 TS DNTMGOTO # TO LOCATION FOR NEXT PASS
048671,000406: 05,3727 30025 CA TIME1 # PLACE TIME1
048672,000407: 05,3730 56001 XCH L # INTO L
048673,000408: 05,3731 30336 CA DUMPLOC # AND ECADR OF THIS EBANK INTO A
048674,000409: 05,3732 13714 TCF DNTMEXIT # SEND DUMPLOC AND TIME1
048675,000410:
048676,000411: 05,3733 03735 LDNDUMP ADRES DNDUMP
048677,000412: 05,3734 03750 LDNDUMP1 ADRES DNDUMP1
048678,000413:
048679,000414: 05,3735 35016 DNDUMP CA TWO # INCREMENT ECADR IN DUMPLOC
048680,000415: 05,3736 26336 ADS DUMPLOC # TO NEXT DP WORD TO BE
048681,000416: 05,3737 74373 MASK LOW8 # DUMPED AND SAVE IT.
048682,000417: 05,3740 10000 CCS A # IS THIS THE BEGINNING OF A NEW EBANK
048683,000418: 05,3741 13752 TCF DNDUMP2 # NO -- THEN CONTINUE DUMPING
048684,000419: 05,3742 30336 CA DUMPLOC # YES -- IS THIS THE END OF THE
048685,000420: 05,3743 70333 MASK DUMPCNT # N-TH(N = 1 TO 4) COMPLETE ERASABLE
048686,000421: 05,3744 77671 MASK PRIO34 # DUMP(BIT14 FOR 4, BIT13 FOR 2 OR BIT12
048687,000422: 05,3745 10000 CCS A # FOR 1 COMPLETE ERASABLE DUMP(S)).
048688,000423: 05,3746 13530 TCF DNPHASE1 # YES -- SEND DOWNLIST AGAIN
048689,000424: # AGAIN
048690,000425: 05,3747 13724 TCF DNDUMPI +2 # NO -- GO BACK AND INITIALZE NEXT BANK
048691,000426:
048692,000427: 05,3750 33733 DNDUMP1 CA LDNDUMP # SET DNTMGOTO
048693,000428: 05,3751 54335 TS DNTMGOTO # FOR WORDS 3 TO 256D OF CURRENT EBANK
048694,000429:
048695,000430: 05,3752 30336 DNDUMP2 CA DUMPLOC
048696,000431: 05,3753 54003 TS EBANK # SET EBANK
048697,000432: 05,3754 74373 MASK LOW8 # ISOLATE RELATIVE ADDRESS.
048698,000433: 05,3755 54002 TS Q # (NOTE: MASK INSTRUCTION IS USED TO PICK
048699,000434: 05,3756 35020 CA NEG0 # UP ERASABLE REGISTERS TO THAT EDITING
048700,000435: 05,3757 54001 TS L # REGISTERS 20-23 WILL NOT BE ALTERED.)
048701,000436: 05,3760 50002 INDEX Q
048702,000437: 05,3761 E3,1400 EBANK= 1400 # PICK UP LOW ORDER REGISTER OF PAIR
048703,000438: 05,3761 71401 MASK 1401 # OF ERASABLE REGISTERS.
048704,000439: 05,3762 56001 XCH L
048705,000440: 05,3763 50002 INDEX Q # PICK UP HIGH ORDER REGISTER OF PAIR
048706,000441: 05,3764 71400 MASK 1400 # OF ERASABLE REGISTERS.
048707,000442: 05,3765 0340 EBANK= DNTMBUFF
048708,000443: 05,3765 13714 TCF DNTMEXIT # GO SEND THEM
048709,000444:
048710,000445: 05,3766 00006 SENDID EXTEND # ** ENTRANCE USED BY ERASABLE DUMP PROG. **
048711,000446: 05,3767 22335 QXCH DNTMGOTO # SET DNTMGOTO SO NEXT TIME PROG WILL GO
048712,000447: 05,3770 35054 CAF ERASID # TO LOCATION FOLLOWING `TC SENDID'
048713,000448:
048714,000449: 05,3771 54001 TS L # ** ENTRANCE USED BY REGULAR DOWNLINK PG **
048715,000450: # Page 1102
048716,000451: 05,3772 03620 TC WOZERO # GO SET WORD ORDER CODE TO ZERO
048717,000452: 05,3773 32000 CAF LOWIDCOD # PLACE SPECIAL ID CODE INTO L
048718,000453: 05,3774 56001 XCH L # AND ID BACK INTO A
048719,000454: 05,3775 13714 TCF DNTMEXIT # SEND DOWNLIST ID CODE(S).
048720,000455:
048721,000456:
048722,000457:
End of include-file DOWN-TELEMETRY_PROGRAM.agc. Parent file is MAIN.agc