Source Code

This is an attempt to recreate Luminary 99 Rev 2, otherwise known as LUM99R2, from Luminary 99 Rev 1 and ephemeris data from Luminary 116. The differences are confined to the last 10-12 lines of the CONTROLLED CONSTANTS. Luminary 99 Rev 1 source-code was transcribed from a printout in the MIT Museum, while Luminary 116 source code was transcribed from a printout belonging to Don Eyles. AGC developer James Kernan, the "rope mother" for the Apollo 11 Lunar Module's AGC, explains as follows: "At the last minute, Dan Lickly, our chief engineer, appeared with ephemerides updates and it took two tries to get it right. The result was that we created Lum99 Revision 1 and Lum99 Revision 2." It is suspected that the former is what's in the MIT Museum, and the latter is what we are trying to recreate here. As for which revision actually flew in Apollo 11, all of the other available surviving evidence points to Rev 1 rather than to Rev 2, so we're just not sure!

042278,000002:                                                                                                  ## Copyright:   Public domain.
042279,000003:                                                                                                  ## Filename:    DOWN_TELEMETRY_PROGRAM.agc
042280,000004:                                                                                                  ## Purpose:     Part of the source code for Luminary 1A build 099.
042281,000005:                                                                                                  ##              It is part of the source code for the Lunar Module's (LM)
042282,000006:                                                                                                  ##              Apollo Guidance Computer (AGC), for Apollo 11.
042283,000007:                                                                                                  ## Assembler:   yaYUL
042284,000008:                                                                                                  ## Contact:     Ron Burkey <info@sandroid.org>.
042285,000009:                                                                                                  ## Website:     www.ibiblio.org/apollo.
042286,000010:                                                                                                  ## Pages:       988-997
042287,000011:                                                                                                  ## Mod history: 2009-05-24 RSB  Adapted from the corresponding 
042288,000012:                                                                                                  ##                              Luminary131 file, using page 
042289,000013:                                                                                                  ##                              images from Luminary 1A.
042290,000014:                                                                                                  ##              2011-01-06 JL   Fixed pseudo-label indentation.
042291,000015:                                                                                                  ##              2016-12-17 RSB  Proofed text comments with octopus/ProoferComments
042292,000016:                                                                                                  ##                              and corrected the errors found.
042293,000017:                                                                                                  ##              2017-01-28 RSB  Back-ported some comment-text fixes
042294,000018:                                                                                                  ##                              identified from Luminary 69.
042295,000019:                                                                                                  ##              2017-03-03 RSB  Snapshot of Luminary 99 Rev 1. 
042296,000020:                                                                                                  ##              2017-03-13 RSB  Comment-text fixes noted in proofing Luminary 116.
042297,000021:                                                                                                  ##              2017-03-15 RSB  Comment-text fixes identified in 5-way
042298,000022:                                                                                                  ##                              side-by-side diff of Luminary 69/99/116/131/210.
042299,000023: 

Page 988

042301,000025:                                                                                                  #  PROGRAM NAME - DOWN TELEMETRY PROGRAM
042302,000026:                                                                                                  #  MOD NO. - 0           TO COMPLETELY REWRITE THE DOWN TELEMETRY PROGRAM AND DOWNLINK ERASABLE DUMP PROGRAM FOR THE
042303,000027:                                                                                                  #                        PURPOSE OF SAVING APPROXIMATELY 150 WORDS OF CORE STORAGE.
042304,000028:                                                                                                  #                        THIS CHANGE REQUIRES AN ENTIRELY NEW METHOD OF SPECIFYING DOWNLINK LISTS.  REFER TO DOWNLINK
042305,000029:                                                                                                  #                        LISTS LOG SECTION FOR MORE DETAILS.  HOWEVER THIS CHANGE WILL NOT AFFECT THE GROUND PROCESSING
042306,000030:                                                                                                  #                        OF DOWN TELEMETRY DATA.
042307,000031:                                                                                                  #  MOD BY - KILROY, SMITH, DEWITT
042308,000032:                                                                                                  #  DATE - 02 OCT 67
042309,000033:                                                                                                  #  AUTHORS - KILROY, SMITH, DEWITT, DEWOLF, FAGIN
042310,000034:                                                                                                  #  LOG SECTION - DOWN-TELEMETRY PROGRAM
042311,000035: 
042312,000036:                                                                                                  #  FUNCTIONAL DESCRIPTION - THIS ROUTINE IS INITIATED BY TELEMETRY END
042313,000037:                                                                                                  #        PULSE FROM THE DOWNLINK TELEMETRY CONVERTER.  THIS PULSE OCCURS
042314,000038:                                                                                                  #        AT 50 TIMES PER SEC (EVERY 20 MS) THEREFORE DODOWNTM IS
042315,000039:                                                                                                  #        EXECUTED AT THESE RATES.  THIS ROUTINE SELECTS THE APPROPRIATE
042316,000040:                                                                                                  #        AGC DATA TO BE TRANSMITTED DOWNLINK AND LOADS IT INTO OUTPUT
042317,000041:                                                                                                  #        CHANNELS 34 AND 35.  THE INFORMATION IS THEN GATED OUT FROM THE
042318,000042:                                                                                                  #        LGC IN SERIAL FASHION.
042319,000043: 
042320,000044:                                                                                                  #        THIS PROGRAM IS CODED FOR A 2 SECOND DOWNLIST.  SINCE DOWNRUPTS
042321,000045:                                                                                                  #        OCCUR EVERY 20 MS AND 2 AGC COMPUTER WORDS CAN BE PLACED IN
042322,000046:                                                                                                  #        CHANNELS 34 AND 35 DURING EACH DOWNRUPT THE PROGRAM IS CAPABLE
042323,000047:                                                                                                  #        OF SENDING 200 AGC WORDS EVERY 2 SECONDS.
042324,000048: 
042325,000049:                                                                                                  #  CALLING SEQUENCE - NONE
042326,000050:                                                                                                  #        PROGRAM IS ENTERED VIA TCF DODOWNTM WHICH IS EXECUTED AS A
042327,000051:                                                                                                  #        RESULT OF A DOWNRUPT.  CONTROL IS RETURNED VIA TCF RESUME WHICH
042328,000052:                                                                                                  #        IN EFFECT IS A RESUME.
042329,000053: 
042330,000054:                                                                                                  #  SUBROUTINES CALLED - NONE
042331,000055: 
042332,000056:                                                                                                  #  NORMAL EXIT MODE - TCF RESUME
042333,000057: 
042334,000058:                                                                                                  #  ALARM OR ABORT EXIT MODE - NONE
042335,000059: 
042336,000060:                                                                                                  #  RESTART PROTECTION:
042337,000061:                                                                                                  #        ON A FRESH START AND RESTART THE 'STARTSUB' SUBROUTINE WILL INITIALIZE THE DOWNLIST POINTER (ACTUALLY
042338,000062:                                                                                                  #        DNTMGOTO) TO THE BEGINNING OF THE CURRENT DOWNLIST (I.E. CURRENT CONTENTS OF DNLSTADR).  THIS HAS THE
042339,000063:                                                                                                  #        EFFECT OF IGNORING THE REMAINDER OF THE DOWNLIST WHICH THE DOWN-TELEMETRY PROGRAM WAS WORKING ON WHEN
042340,000064:                                                                                                  #        THE RESTART (OR FRESH START) OCCURRED AND RESUME DOWN TELEMETRY FROM THE BEGINNING OF THE CURRENT
042341,000065:                                                                                                  #        DOWNLIST.
042342,000066: 
042343,000067:                                                                                                  #        ALSO OF INTEREST IS THE FACT THAT ON A RESTART THE AGC WILL ZERO DOWNLINK CHANNELS 13, 34 AND 35.
042344,000068: 
042345,000069:                                                                                                  #  DOWNLINK LIST SELECTION:
042346,000070:                                                                                                  #        THE APPROPRIATE DOWNLINK LISTS ARE SELECTED BY THE FOLLOWING:
042347,000071:                                                                                                  #        1.      FRESH START
042348,000072:                                                                                                  #        2.      V37EXXE WHERE XX = THE MAJOR MODE BEING SELECTED.
042349,000073:                                                                                                  #        3.      UPDATE PROGRAM (P27)
042350,000074:                                                                                                  #        4.      NON-V37 SELECTABLE TYPE PROGRAMS (E.G. AGS INITIALIZATION (SUNDANCE, LUMINARY) AND P61-P62
042351,000075:                                                                                                  #                TRANSITION (COLOSSUS) ETC.).
042352,000076: 
042353,000077:                                                                                                  #  DOWNLINK LIST RULES AND LIMITATIONS:
042354,000078:                                                                                                  #        READ SECTION(S) WHICH FOLLOW 'DEBRIS' WRITEUP.
042355,000079: 
042356,000080:                                                                                                  #  OUTPUT - EVERY 2 SECONDS 100 DOUBLE PRECISION WORDS (I.E. 200 LGC
042357,000081:                                                                                                  #        COMPUTER WORDS) ARE TRANSMITTED VIA DOWNLINK.
042358,000082: 
042359,000083:                                                                                                  #  ERASABLE INITIALIZATION REQUIRED - NONE
042360,000084:                                                                                                  #        'DNTMGOTO' AND 'DNLSTADR' ARE INITIALIZED BY THE FRESH START PROGRAM.
042361,000085: 
042362,000086:                                                                                                  #  DEBRIS (ERASABLE LOCATIONS DESTROYED BY THIS PROGRAM) -
042363,000087:                                                                                                  #        LDATALST, DNTMBUFF TO DNTMBUFF +21D, TMINDEX, DNQ.
042364,000088: 

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042367,000091: 

Page 990

042369,000093:                                                                                                  #  DODOWNTM IS ENTERED EVERY 20 MS BY AN INTERRUPT TRIGGERED BY THE
042370,000094:                                                                                                  #  RECEIPT OF AN ENDPULSE FROM THE SPACECRAFT TELEMETRY PROGRAMMER.
042371,000095: 
042372,000096:                                                                                                  #  NOTES REGARDING DOWNLINK LISTS ASSOCIATED WITH THIS PROGRAM:
042373,000097:                                                                                                  #  1.    DOWNLISTS. - DOWNLISTS MUST BE COMPILED IN THE SAME BANK AS THE
042374,000098:                                                                                                  #        DOWN-TELEMETRY PROGRAM.  THIS IS DONE FOR EASE OF CODING, FASTER
042375,000099:                                                                                                  #        EXECUTION.
042376,000100:                                                                                                  #  2.    EACH DOWNLINK LIST CONSISTS OF A CONTROL LIST AND A NUMBER OF
042377,000101:                                                                                                  #        SUBLISTS.
042378,000102:                                                                                                  #  3.    A SUBLIST REFERS TO A SNAPSHOT OR DATA COMMON TO THE SAME OR OTHER
042379,000103:                                                                                                  #        DOWNLINK LISTS.  ANY SUBLIST CONTAINING COMMON DATA NEEDS TO BE
042380,000104:                                                                                                  #        CODED ONLY ONCE FOR THE APPLICABLE DOWNLINK LISTS.
042381,000105:                                                                                                  #  4.    SNAPSHOT SUBLISTS REFER SPECIFICALLY TO HOMOGENOUS DATA WHICH MUST BE
042382,000106:                                                                                                  #        SAVED IN A BUFFER DURING ONE DOWNRUPT.
042383,000107:                                                                                                  #  5.    THE 1DNADR FOR THE 1ST WORD OF SNAPSHOT DATA IS FOUND AT THE END
042384,000108:                                                                                                  #        OF EACH SNAPSHOT SUBLIST, SINCE THE PROGRAM CODING SENDS THIS DP WORD
042385,000109:                                                                                                  #        IMMEDIATELY AFTER STORING THE OTHERS IN THE SNAPSHOT BUFFER.
042386,000110:                                                                                                  #  6.    ALL LISTS ARE COMBINATIONS OF CODED ERASABLE ADDRESS CONSTANTS
042387,000111:                                                                                                  #        CREATED FOR THE DOWNLIST PROGRAM.
042388,000112:                                                                                                  #        A.      1DNADR                  1-WORD DOWNLIST ADDRESS.
042389,000113:                                                                                                  #                SAME AS ECADR, BUT USED WHEN THE WORD ADDRESSED IS THE LEFT
042390,000114:                                                                                                  #                HALF OF A DOUBLE-PRECISION WORD FOR DOWN TELEMETRY.
042391,000115:                                                                                                  #        B.      2DNADR - 6DNADR         N-WORD DOWNLIST ADDRESS, N = 2 - 6.
042392,000116:                                                                                                  #                SAME AS 1DNADR, BUT WITH THE 4 UNUSED BITS OF THE ECADR FORMAT
042393,000117:                                                                                                  #                FILLED IN WITH 0001-0101.  USED TO POINT TO A LIST OF N DOUBLE-
042394,000118:                                                                                                  #                PRECISION WORDS, STORED CONSECUTIVELY, FOR DOWN TELEMETRY.
042395,000119:                                                                                                  #        C.      DNCHAN                  DOWNLIST CHANNEL ADDRESS.
042396,000120:                                                                                                  #                SAME AS 1DNADR, BUT WITH PREFIX BITS 0111.  USED TO POINT TO
042397,000121:                                                                                                  #                A PAIR OF CHANNELS FOR DOWN TELEMETRY.
042398,000122:                                                                                                  #        D.      DNPTR                   DOWN TELEMETRY SUBLIST POINTER.
042399,000123:                                                                                                  #                SAME AS CAF BUT TAGGED AS A CONSTANT.  USED IN CONTROL LIST TO POINT TO A SUBLIST.
042400,000124:                                                                                                  #                CAUTION --- A DNPTR CANNOT BE USED IN A SUBLIST.
042401,000125:                                                                                                  #  7.    THE WORD ORDER CODE IS SET TO ZERO AT THE BEGINNING OF EACH DOWNLIST (I.E. CONTROL LIST) AND WHEN
042402,000126:                                                                                                  #        A '1DNADR TIME2' IS DETECTED IN THE CONTROL LIST (ONLY).
042403,000127:                                                                                                  #  8.    IN THE SNAPSHOT SUBLIST ONLY, THE DNADR'S CANNOT POINT TO THE FIRST WORD OF ANY EBANK.
042404,000128: 
042405,000129:                                                                                                  #  DOWNLINK LIST RESTRICTIONS:
042406,000130:                                                                                                  #  (THE FOLLOWING POINTS MAY BE LISTED ELSEWHERE BUT ARE LISTED HERE SO IT IS CLEAR THAT THESE THINGS CANNOT BE
042407,000131:                                                                                                  #  DONE)
042408,000132:                                                                                                  #  1.    SNAPSHOT DOWNLIST:
042409,000133:                                                                                                  #        (A) CANNOT CONTAIN THE FOLLOWING ECADRS (I.E. 1DNADR'S): 0, 400, 1000, 1400, 2000, 2400, 3000, 3400.
042410,000134:                                                                                                  #        (B) CAN CONTAIN ONLY 1DNADR'S
042411,000135:                                                                                                  #  2.    ALL DOWNLINKED DATA (EXCEPT CHANNELS) IS PICKED UP BY A <DCA<SO DOWNLINK LISTS CANNOT CONTAIN THE
042412,000136:                                                                                                  #        EQUIVALENT OF THE FOLLOWING ECADRS (I.E. IDNADRS): 377, 777, 1377, 1777, 2377, 27777, 3377, 3777.
042413,000137:                                                                                                  #        (NOTE: THE TERM EQUIVALENT ' MEANT THAT THE IDNADR TO 6DNADR WILL BE PROCESSED LIKE 1 TO 6 ECADRS)
042414,000138:                                                                                                  #  3.    CONTROL LISTS AND SUBLISTS CANNOT HAVE ENTRIES = OCTAL 00000 OR OCTAL 77777

Page 991

042416,000140:                                                                                                  #  4.    THE '1DNADR TIME2' WHICH WILL CAUSE THE DOWNLINK PROGRAM TO SET THE WORDER CODE TO 3 MUST APPEAR IN THE
042417,000141:                                                                                                  #        CONTROL SECTION OF THE DOWNLIST.
042418,000142:                                                                                                  #  5.    'DNCHAN 0' CANNOT BE USED.
042419,000143:                                                                                                  #  6.    'DNPTR 0' CANNOT BE USED.
042420,000144:                                                                                                  #  7.    DNPTR CANNOT APPEAR IN A SUBLIST.
042421,000145: 
042422,000146:                                                                                                  #  EBANK SETTINGS
042423,000147:                                                                                                  #        IN THE PROCESS OF SETTING THE EBANK (WHEN PICKING UP DOWNLINK DATA) THE DOWN TELEMETRY PROGRAM PUTS
042424,000148:                                                                                                  #        'GARBAGE' INTO BITS15-12 OF EBANK.  HUGH BLAIR-SMITH WARNS US THAT BITS15-12 OF EBANK MAY BECOME
042425,000149:                                                                                                  #        SIGNIFICANT SOMEDAY IN THE FUTURE.  IF/WHEN THAT HAPPENS, THE PROGRAM SHOULD INSURE (BY MASKING ETC.)
042426,000150:                                                                                                  #        THAT BITS 15-12 OF EBANK ARE ZERO.
042427,000151: 
042428,000152:                                                                                                  #  INITIALIZATION REQUIRED - TO INTERRUPT CURRENT LIST AND START A NEW ONE..
042429,000153:                                                                                                  #        1. ADRES OF DOWNLINK LIST INTO DNLSTADR
042430,000154:                                                                                                  #        2. NEGONE INTO SUBLIST
042431,000155:                                                                                                  #        3. NEGONE INTO DNECADR
042432,000156: 
042433,000157: 22,3711                                           BANK     22                                    
042434,000158: 05,2000                                           SETLOC   DOWNTELM                              
042435,000159: 05,2000                                           BANK                                           
042436,000160: 
042437,000161: 05,3506     0340                                  EBANK=   DNTMBUFF                              
042438,000162: 
042439,000163: 05,3506                                           COUNT*   $$/DPROG                              
042440,000164: 05,3506           54016        DODOWNTM           TS       BANKRUPT                              
042441,000165: 05,3507           00006                           EXTEND                                         
042442,000166: 05,3510           22012                           QXCH     QRUPT                                 #  SAVE Q
042443,000167: 05,3511           13763                           TCF      WOTEST                                
042444,000168: 05,3512           00006        WO1                EXTEND                                         #  SET WORD ORDER BIT TO 1 ONLY IF IT
042445,000169: 05,3513           05013                           WOR      CHAN13                                #  ALREADY ISN'T.
042446,000170: 05,3514           00335                           TC       DNTMGOTO                              #  GOTO APPROPRIATE PHASE OF PROGRAM
042447,000171: 
042448,000172: 05,3515           37747        DNPHASE1           CA       NEGONE                                #  INITIALIZE ALL CONTROL WORDS
042449,000173: 05,3516           54337                           TS       SUBLIST                               #  WORDS TO MINUS ONE
042450,000174: 05,3517           54336                           TS       DNECADR                               
042451,000175: 05,3520           33640                           CA       LDNPHAS2                              #  SET DNTMGOTO =O ALL SUBSEQUENT DOWNRUPTS
042452,000176: 05,3521           54335                           TS       DNTMGOTO                              #  GO TO DNPHASE2
042453,000177: 05,3522           13536                           TCF      NEWLIST                               
042454,000178: 05,3523           10336        DNPHASE2           CCS      DNECADR                               #  SENDING OF DATA IN PROGRESS
042455,000179: 05,3524           03653        DODNADR            TC       FETCH2WD                              #  YES - THEN FETCH THE NEXT 2 SP WORDS
042456,000180: 05,3525           77753        MINTIME2           -1DNADR  TIME2                                 #  NEGATIVE OF TIME2 1DNADR
042457,000181: 05,3526           13527                           TCF      +1                                    #  (ECADR OF 3776 + 74001 = 77777)
042458,000182: 
042459,000183: 05,3527           10337                           CCS      SUBLIST                               #  IS THE SUBLIST IN CONTROL
042460,000184: 05,3530           13666                           TCF      NEXTINSL                              #  YES

Page 992

042462,000186: 05,3531           74001        DNADRDCR           OCT      74001                                 #  DNADR COUNT AND ECADR DECREMENTER
042463,000187: 
042464,000188: 05,3532           30334        CHKLIST            CA       CTLIST                                
042465,000189: 05,3533           00006                           EXTEND                                         
042466,000190: 05,3534           63536                           BZMF     NEWLIST                               #  IT WILL BE NEGATIVE AT END OF LIST
042467,000191: 05,3535           13543                           TCF      NEXTINCL                              
042468,000192: 05,3536           50332        NEWLIST            INDEX    DNLSTCOD                              
042469,000193: 05,3537           32441                           CA       DNTABLE                               #  INITIALIZE CTLIST WITH
042470,000194: 05,3540           54334                           TS       CTLIST                                #        STARTING ADDRESS OF NEW LIST
042471,000195: 05,3541           40332                           CS       DNLSTCOD                              
042472,000196: 05,3542           13756                           TCF      SENDID     +3                         
042473,000197: 05,3543           50334        NEXTINCL           INDEX    CTLIST                                
042474,000198: 05,3544           30000                           CA       0                                     
042475,000199: 05,3545           10000                           CCS      A                                     
042476,000200: 05,3546           24334                           INCR     CTLIST                                #  SET POINTER TO PICK UP NEXT CTLIST WORD
042477,000201: 05,3547           13553                           TCF      +4                                    #  ON NEXT ENTRY TO PROG.  (A SHOULD NOT =0)
042478,000202: 05,3550           56334                           XCH      CTLIST                                #  SET CTLIST TO NEGATIVE AND PLACE(CODING)
042479,000203: 05,3551           40000                           COM                                            #  UNCOMPLEMENTED DNADR INTO A.    (FOR LA)
042480,000204: 05,3552           56334                           XCH      CTLIST                                #                                  (ST IN )
042481,000205: 05,3553           24000                 +4        INCR     A                                     #                                  (CTLIST)
042482,000206: 05,3554           54336                           TS       DNECADR                               #  SAVE DNADR
042483,000207: 05,3555           63525                           AD       MINTIME2                              #  TEST FOR TIME2 (NEG. OF ECADR)
042484,000208: 05,3556           10000                           CCS      A                                     
042485,000209: 05,3557           13563                           TCF      SETWO      +1                         #  DON'T SET WORD ORDER CODE
042486,000210: 05,3560           47777        MINB1314           OCT      47777                                 #  MINUS BIT 13 AND 14 (CAN'T GET HERE)
042487,000211: 05,3561           13563                           TCF      SETWO      +1                         #  DON'T SET WORD ORDER CODE
042488,000212: 05,3562           03605        SETWO              TC       WOZERO                                #  GO SET WORD ORDER CODE TO ZERO.
042489,000213: 05,3563           30336                 +1        CA       DNECADR                               #  RELOAD A WITH THE DNADR.
042490,000214: 05,3564           63560                 +2        AD       MINB1314                              #  IS THIS A REGULAR DNADR?
042491,000215: 05,3565           00006                           EXTEND                                         
042492,000216: 05,3566           63653                           BZMF     FETCH2WD                              #  YES.  (A MUST NEVER BE ZERO)
042493,000217: 05,3567           67741                           AD       MINB12                                #  NO- IS IT A POINTER (DNPTR) OR A
042494,000218: 05,3570           00006                           EXTEND                                         #      CHANNEL(DNCHAN)
042495,000219: 05,3571           63611                           BZMF     DODNPTR                               #  IT'S A POINTER.  (A MUST NEVER BE ZERO)
042496,000220: 
042497,000221: 05,3572           00006        DODNCHAN           TC       6                                     #  (EXECUTED AS EXTEND)  IT S A CHANNEL
042498,000222: 05,3573           50336                           INDEX    DNECADR                               
042499,000223: 05,3574           44000                           INDEX    0          -4000                      #  (EXECUTED AS READ)
042500,000224: 05,3575           54001                           TS       L                                     
042501,000225: 05,3576           00006                           TC       6                                     #  (EXECUTED AS EXTEND)
042502,000226: 05,3577           50336                           INDEX    DNECADR                               
042503,000227: 05,3600           43777                           INDEX    0          -4001                      #  (EXECUTED AS READ)
042504,000228: 05,3601           54336                           TS       DNECADR                               #  SET DNECADR
042505,000229: 05,3602           37747                           CA       NEGONE                                #        TO MINUS
042506,000230: 05,3603           56336                           XCH      DNECADR                               #                WHILE PRESERVING A.
042507,000231: 05,3604           13701                           TCF      DNTMEXIT                              #  GO SEND CHANNELS
042508,000232: 
042509,000233: 05,3605           44745        WOZERO             CS       BIT7                                  
042510,000234: 05,3606           00006                           EXTEND                                         
042511,000235: 05,3607           03013                           WAND     CHAN13                                #  SET WORD ORDER CODE TO ZERO

Page 993

042513,000237: 05,3610           00002                           TC       Q                                     #  RETURN TO CALLER
042514,000238: 
042515,000239: 05,3611           50336        DODNPTR            INDEX    DNECADR                               #  DNECADR CONTAINS ADRES OF SUBLIST
042516,000240: 05,3612           00000                           0        0                                     #  CLEAR AND ADD LIST ENTRY INTO A.
042517,000241: 05,3613           10000                           CCS      A                                     #  IS THIS A SNAPSHOT SUBLIST
042518,000242: 05,3614           30336                           CA       DNECADR                               #  NO, IT IS A REGULAR SUBLIST.
042519,000243: 05,3615           13665                           TCF      DOSUBLST                              #  A MUST NOT BE ZERO.
042520,000244: 
042521,000245: 05,3616           56336                           XCH      DNECADR                               #  YES, IT IS A SNAPSHOT SUBLIST.
042522,000246: 05,3617           54337                           TS       SUBLIST                               #  C(DNECADR) INTO SUBLIST
042523,000247: 05,3620           34755                           CAF      ZERO                                  #        A    INTO     A
042524,000248: 05,3621           56336                           XCH      TMINDEX                               #  (NOTE..  TMINDEX = DNECADR)
042525,000249: 
042526,000250:                                                                                                  #  THE FOLLOWING CODING (FROM SNAPLOOP TO SNAPEND) IS FOR THE PURPOSE OF TAKING A SNAPSHOT OF 12 DP REGISTERS.
042527,000251:                                                                                                  #  THIS IS DONE BY SAVING 11 DP REGISTERS IN DNTMBUFF AND SENDING THE FIRST DP WORD IMMEDIATELY.
042528,000252:                                                                                                  #  THE SNAPSHOT PROCESSING IS THE MOST TIME CONSUMING AND THEREFORE THE CODING AND LIST STRUCTURE WERE DESIGNED
042529,000253:                                                                                                  #  TO MINIMIZE TIME.  THE TIME OPTIMIZATION RESULTS IN RULES UNIQUE TO THE SNAPSHOT PORTION OF THE DOWNLIST.
042530,000254:                                                                                                  #  THESE RULES ARE ......
042531,000255:                                                                                                  #        1.      ONLY 1DNADR'S CAN APPEAR IN THE SNAPSHOT SUBLIST
042532,000256:                                                                                                  #        2.      THE 1DNADR'S CANNOT REFER TO THE FIRST LOCATION IN ANY BANK.
042533,000257: 
042534,000258: 05,3622           54003        SNAPLOOP           TS       EBANK                                 #  SET EBANK
042535,000259: 05,3623           74357                           MASK     LOW8                                  #  ISOLATE RELATIVE ADDRESS
042536,000260: 05,3624           00006                           EXTEND                                         
042537,000261: 05,3625           50000                           INDEX    A                                     
042538,000262: 05,3626  E3,1401                                  EBANK=   1401                                  
042539,000263: 05,3626           31402                           DCA      1401                                  #  PICK UP 2 SNAPSHOT WORDS.
042540,000264: 05,3627     0340                                  EBANK=   DNTMBUFF                              
042541,000265: 05,3627           50336                           INDEX    TMINDEX                               
042542,000266: 05,3630           52341                           DXCH     DNTMBUFF                              #  STORE 2 SNAPSHOT WORDS IN BUFFER
042543,000267: 05,3631           24336                           INCR     TMINDEX                               #  SET BUFFER INDEX FOR NEXT 2 WORDS.
042544,000268: 05,3632           24336                           INCR     TMINDEX                               
042545,000269: 05,3633           24337        SNAPAGN            INCR     SUBLIST                               #  SET POINTER TO NEXT 2 WORDS OF SNAPSHOT
042546,000270: 05,3634           50337                           INDEX    SUBLIST                               
042547,000271: 05,3635           00000                           0        0                                     #  = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
042548,000272: 05,3636           10000                           CCS      A                                     #  TEST FOR LAST TWO WORDS OF SNAPSHOT.
042549,000273: 05,3637           13622                           TCF      SNAPLOOP                              #  NOT LAST TWO.
042550,000274: 05,3640           03523        LDNPHAS2           GENADR   DNPHASE2                              
042551,000275: 05,3641           54337                           TS       SUBLIST                               #  YES, LAST.  SAVE A.
042552,000276: 05,3642           37747                           CA       NEGONE                                #  SET DNECADR AND
042553,000277: 05,3643           54336                           TS       DNECADR                               #        SUBLIST POINTERS
042554,000278: 05,3644           56337                           XCH      SUBLIST                               #                TO NEGATIVE VALUES.
042555,000279: 05,3645           54003                           TS       EBANK                                 
042556,000280: 05,3646           74357                           MASK     LOW8                                  
042557,000281: 05,3647           00006                           EXTEND                                         
042558,000282: 05,3650           50000                           INDEX    A                                     
042559,000283: 05,3651  E3,1401                                  EBANK=   1401                                  
042560,000284: 05,3651           31402                           DCA      1401                                  #  PICK UP FIRST 2 WORDS OF SNAPSHOT.

Page 994

042562,000286: 05,3652     0340                                  EBANK=   DNTMBUFF                              
042563,000287: 05,3652           13701        SNAPEND            TCF      DNTMEXIT                              #  NOW GO SEND THEM.
042564,000288: 
042565,000289: 05,3653           30336        FETCH2WD           CA       DNECADR                               
042566,000290: 05,3654           54003                           TS       EBANK                                 #  SET EBANK
042567,000291: 05,3655           74357                           MASK     LOW8                                  #  ISOLATE RELATIVE ADDRESS
042568,000292: 05,3656           54001                           TS       L                                     
042569,000293: 05,3657           33531                           CA       DNADRDCR                              #  DECREMENT COUNT AND ECADR
042570,000294: 05,3660           26336                           ADS      DNECADR                               
042571,000295: 05,3661           00006                           EXTEND                                         
042572,000296: 05,3662           50001                           INDEX    L                                     
042573,000297: 05,3663  E3,1400                                  EBANK=   1400                                  
042574,000298: 05,3663           31401                           DCA      1400                                  #  PICK UP 2 DATA WORDS
042575,000299: 05,3664     0340                                  EBANK=   DNTMBUFF                              
042576,000300: 05,3664           13701                           TCF      DNTMEXIT                              #  NOW GO SEND THEM.
042577,000301: 
042578,000302: 05,3665           54337        DOSUBLST           TS       SUBLIST                               #  SET SUBLIST POINTER
042579,000303: 05,3666           50337        NEXTINSL           INDEX    SUBLIST                               
042580,000304: 05,3667           00000                           0        0                                     #  = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
042581,000305: 05,3670           10000                           CCS      A                                     #  IS IT THE END OF THE SUBLIST
042582,000306: 05,3671           24337                           INCR     SUBLIST                               #  NO -
042583,000307: 05,3672           13676                           TCF      +4                                    
042584,000308: 05,3673           54337                           TS       SUBLIST                               #  SAVE A.
042585,000309: 05,3674           37747                           CA       NEGONE                                #  SET SUBLIST TO MINUS
042586,000310: 05,3675           56337                           XCH      SUBLIST                               #  RETRIEVE A.
042587,000311: 05,3676           24000                 +4        INCR     A                                     
042588,000312: 05,3677           54336                           TS       DNECADR                               #  SAVE DNADR
042589,000313: 05,3700           13564                           TCF      SETWO      +2                         #  GO USE COMMON CODING (PROBLEMS WOULD
042590,000314:                                                                                                  #  OCCUR IF THE PROGRAM ENCOUNTERED A
042591,000315:                                                                                                  #  DNPTR NOW)
042592,000316: 
042593,000317: 05,3701           00006        DNTMEXIT           EXTEND                                         #  DOWN-TELEMETRY EXIT
042594,000318: 05,3702           01034                           WRITE    DNTM1                                 #  TO SEND A + L TO CHANNELS 34 + 35
042595,000319: 05,3703           30001                           CA       L                                     #  RESPECTIVELY
042596,000320: 05,3704           00006        TMEXITL            EXTEND                                         
042597,000321: 05,3705           01035                           WRITE    DNTM2                                 
042598,000322: 05,3706           15270        TMRESUME           TCF      RESUME                                #  EXIT TELEMETRY PROGRAM VIA RESUME.
042599,000323: 
042600,000324: 05,3707     7741               MINB12             EQUALS   -1/8                                  
042601,000325: 05,3707     0336               DNECADR            EQUALS   TMINDEX                               
042602,000326: 05,3707     0334               CTLIST             EQUALS   LDATALST                              
042603,000327: 05,3707     0337               SUBLIST            EQUALS   DNQ                                   
042604,000328: 

Page 995

042606,000330:                                                                                                  #  SUBROUTINE NAME - DNDUMP
042607,000331: 
042608,000332:                                                                                                  #  FUNCTIONAL DESCRIPTION - TO SEND (DUMP) ALL ERASABLE STORAGE 'N' TIMES. (N=1 TO 4).  BANKS ARE SENT ONE AT A TIME
042609,000333:                                                                                                  #        EACH BANK IS PRECEEDED BY AN ID WORD, SYNCH BITS, ECADR AND TIME1 FOLLOWED BY THE 256D WORDS OF EACH
042610,000334:                                                                                                  #        EBANK.  EBANKS ARE DUMPED IN ORDER (I.E. EBANK 0 FIRST, THEN EBANK1 ETC.)
042611,000335: 
042612,000336:                                                                                                  #  CALLING SEQUENCE - THE GROUND OR ASTRONAUT BY KEYING V74E CAN INITIALIZE THE DUMP.
042613,000337:                                                                                                  #        AFTER KEYING IN V74E THE CURRENT DOWNLIST WILL BE IMMEDIATELY TERMINATED AND THE DOWNLINK ERASABLE DUMP
042614,000338:                                                                                                  #        WILL BEGIN.
042615,000339: 
042616,000340:                                                                                                  #        ONCE INITIATED THE DOWNLINK ERASABLE DUMP CAN BE TERMINATED (AND INTERRUPTED DOWNLIST REINSTATED) ONLY
042617,000341:                                                                                                  #        BY THE FOLLOWING:
042618,000342: 
042619,000343:                                                                                                  #        1.      A FRESH START
042620,000344:                                                                                                  #        2.      COMPLETION OF ALL DOWNLINK DUMPS REQUESTED (ACCORDING TO BITS SET IN DUMPCNT).  NOTE THAT DUMPCNT
042621,000345:                                                                                                  #                CAN BE ALTERED BY A V21N01.
042622,000346:                                                                                                  #        3.      AND INVOLUNTARILY BY A RESTART.
042623,000347: 
042624,000348:                                                                                                  #  NORMAL EXIT MODE - TCF DNPHASE1
042625,000349: 
042626,000350:                                                                                                  #  ALARM OR ABORT MODE - NONE
042627,000351: 
042628,000352:                                                                                                  #  *SUBROUTINES CALLED - NONE.
042629,000353: 
042630,000354:                                                                                                  #  ERASABLE INITIALIZATION REQUIRED -
042631,000355:                                                                                                  #        DUMPCNT         OCT 20000       IF 4 COMPLETE ERASABLE DUMPS ARE DESIRED
042632,000356:                                                                                                  #        DUMPCNT         OCT 10000       IF 2 COMPLETE ERASABLE DUMPS ARE DESIRED
042633,000357:                                                                                                  #        DUMPCNT         OCT 04000       IF 1 COMPLETE ERASABLE DUMP  IS  DESIRED
042634,000358: 
042635,000359:                                                                                                  #  DEBRIS - DUMPLOC, DUMPSW, DNTMGOTO, EBANK AND CENTRAL REGISTERS
042636,000360: 
042637,000361:                                                                                                  #  TIMING -      TIME (IN SECS) = ((NO.DUMPS)*(NO.EBANKS)*(WDSPEREBANK + NO.IDWDS)) / NO.WDSPERSEC
042638,000362:                                                                                                  #                TIME (IN SECS) =  (   4    )*(    8    )*(    256     +     4   )  /     100
042639,000363:                                                                                                  #                THUS TIME (IN SECS TO SEND DUMP OF ERASABLE 4 TIMES VIA DOWNLINK) = 83.2 SECONDS
042640,000364: 
042641,000365:                                                                                                  #  STRUCTURE OF ONE EBANK AS IT IS SENT BY DOWNLINK PROGRAM -
042642,000366:                                                                                                  #        (REMINDER - THIS ONLY DESCRIBES ONE OF THE 8 EBANKS X 4 (DUMPS) = 32 EBANKS WHICH WILL BE SENT BY DNDUMP)
042643,000367:                                                                                                  #        DOWNLIST                                W
042644,000368:                                                                                                  #          WORD  TAKEN FROM CONTENTS OF  EXAMPLE O       COMMENTS
042645,000369:                                                                                                  #            1   ERASID                   0177X  0       DOWNLIST I.D. FOR DOWNLINK ERASABLE DUMP (X=7 CSM, 6 LM)
042646,000370:                                                                                                  #            2   LOWIDCOD                 77340  1       DOWNLINK SYNCH BITS.  (SAME ONE USED IN ALL OTHER DOWNLISTS)
042647,000371:                                                                                                  #            3   DUMPLOC                  13400  1       (SEE NOTES ON DUMPLOC) 1 = 3RD ERAS DUMP, 3400=ECADR OF 5TH WD
042648,000372:                                                                                                  #            4   TIME1                    14120  1       TIME IN CENTISECONDS
042649,000373:                                                                                                  #            5   FIRST WORD OF EBANK X    03400  1       IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1400 (ECADR 3400)
042650,000374:                                                                                                  #            6   2ND   WORD OF EBANK X    00142  1       IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1401 (ECADR 3401)
042651,000375:                                                                                                  #            7   3RD   WORD OF EBANK X    00142  1       IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1402 (ECADR 3402)
042652,000376:                                                                                                  #            .                                   1
042653,000377:                                                                                                  #            .                                   1
042654,000378:                                                                                                  #            .                                   1
042655,000379:                                                                                                  #         260D   256TH WORD OF EBANK X    03777  1       IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1777 (ECADR 3777)
042656,000380: 
042657,000381:                                                                                                  #  NOTE -        DUMPLOC CONTAINS THE COUNTER AND ECADR FOR EACH WORD BEING SENT.
042658,000382:                                                                                                  #                THE BIT STRUCTURE OF DUMPLOC IS FOLLOWS---
042659,000383:                                                                                                  #                                                X = NOT USED
042660,000384:                                                                                                  #                X ABC EEE RRRRRRRR            ABC = ERASABLE DUMP COUNTER (I.E. ABC = 0,1,2 OR 3 WHICH MEANS THAT
042661,000385:                                                                                                  #                                                    COMPLETE ERASABLE DUMP NUMBER 1,2,3 OR 4 RESPECTIVELY IS IN PROGRESS)
042662,000386:                                                                                                  #                                              EEE = EBANK BITS
042663,000387:                                                                                                  #                                         RRRRRRRR = RELATIVE ADDRESS WITHIN AN EBANK.
042664,000388: 

Page 996

042666,000390: 05,3707           34755        DNDUMPI            CA       ZERO                                  #  INITIALIZE DOWNLINK
042667,000391: 05,3710           54336                           TS       DUMPLOC                               #  ERASABLE DUMP
042668,000392: 05,3711           03753                 +2        TC       SENDID                                #  GO SEND ID AND SYNCH BITS
042669,000393: 05,3712           33721                           CA       LDNDUMP1                              #  SET DNTMGOTO
042670,000394: 05,3713           54335                           TS       DNTMGOTO                              #  TO LOCATION FOR NEXT PASS
042671,000395: 05,3714           30025                           CA       TIME1                                 #  PLACE TIME1
042672,000396: 05,3715           56001                           XCH      L                                     #  INTO L
042673,000397: 05,3716           30336                           CA       DUMPLOC                               #  AND ECADR OF THIS EBANK INTO A
042674,000398: 05,3717           13701                           TCF      DNTMEXIT                              #  SEND DUMPLOC AND TIME1
042675,000399: 
042676,000400: 05,3720           03722        LDNDUMP            ADRES    DNDUMP                                
042677,000401: 05,3721           03735        LDNDUMP1           ADRES    DNDUMP1                               
042678,000402: 
042679,000403: 05,3722           34752        DNDUMP             CA       TWO                                   #  INCREMENT ECADR IN DUMPLOC
042680,000404: 05,3723           26336                           ADS      DUMPLOC                               #  TO NEXT DP WORD TO BE
042681,000405: 05,3724           74357                           MASK     LOW8                                  #  DUMPED AND SAVE IT.
042682,000406: 05,3725           10000                           CCS      A                                     #  IS THIS THE BEGINNING OF A NEW EBANK
042683,000407: 05,3726           13737                           TCF      DNDUMP2                               #  NO - THEN CONTINUE DUMPING
042684,000408: 05,3727           30336                           CA       DUMPLOC                               #  YES - IS THIS THE END OF THE
042685,000409: 05,3730           70333                           MASK     DUMPCNT                               #  N TH (N = 1 TO 4) COMPLETE ERASABLE
042686,000410: 05,3731           77722                           MASK     PRIO34                                #  DUMP (BIT14 FOR 4, BIT13 FOR 2 OR BIT12
042687,000411: 05,3732           10000                           CCS      A                                     #  FOR 1 COMPLETE ERASABLE DUMP(S)).
042688,000412: 05,3733           13515                           TCF      DNPHASE1                              #  YES - START SENDING INTERRUPTED DOWNLIST
042689,000413:                                                                                                  #  AGAIN
042690,000414: 05,3734           13711                           TCF      DNDUMPI    +2                         #  NO - GO BACK AND INITIALIZE NEXT BANK
042691,000415: 
042692,000416: 05,3735           33720        DNDUMP1            CA       LDNDUMP                               #  SET DNTMGOTO
042693,000417: 05,3736           54335                           TS       DNTMGOTO                              #  FOR WORDS 3 TO 256D OF CURRENT EBANK
042694,000418: 
042695,000419: 05,3737           30336        DNDUMP2            CA       DUMPLOC                               
042696,000420: 05,3740           54003                           TS       EBANK                                 #  SET EBANK
042697,000421: 05,3741           74357                           MASK     LOW8                                  #  ISOLATE RELATIVE ADDRESS.
042698,000422: 05,3742           54002                           TS       Q                                     #  (NOTE: MASK INSTRUCTION IS USED TO PICK
042699,000423: 05,3743           34754                           CA       NEG0                                  #  UP ERASABLE REGISTERS SO THAT EDITING
042700,000424: 05,3744           54001                           TS       L                                     #  REGISTERS 20-23 WILL NOT BE ALTERED.)
042701,000425: 05,3745           50002                           INDEX    Q                                     
042702,000426: 05,3746  E3,1400                                  EBANK=   1400                                  #  PICK UP LOW ORDER REGISTER OF PAIR
042703,000427: 05,3746           71401                           MASK     1401                                  #  OF ERASABLE REGISTERS.
042704,000428: 05,3747           56001                           XCH      L                                     
042705,000429: 05,3750           50002                           INDEX    Q                                     #  PICK UP HIGH ORDER REGISTER OF PAIR
042706,000430: 05,3751           71400                           MASK     1400                                  #  OF ERASABLE REGISTERS.
042707,000431: 05,3752     0340                                  EBANK=   DNTMBUFF                              
042708,000432: 05,3752           13701                           TCF      DNTMEXIT                              #  GO SEND THEM
042709,000433: 
042710,000434: 05,3753           00006        SENDID             EXTEND                                         #  ** ENTRANCE USED BY ERASABLE DUMP PROG.**
042711,000435: 05,3754           22335                           QXCH     DNTMGOTO                              #  SET DNTMGOTO SO NEXT TIME PROG WILL GO
042712,000436: 05,3755           35011                           CAF      ERASID                                #  TO LOCATION FOLLOWING :TC SENDID:
042713,000437: 
042714,000438: 05,3756           54001                           TS       L                                     #  ** ENTRANCE USED BY REGULAR DOWNLINK PG **

Page 997

042716,000440: 05,3757           03605                           TC       WOZERO                                #  GO SET WORD ORDER CODE TO ZERO
042717,000441: 05,3760           32065                           CAF      LOWIDCOD                              #  PLACE SPECIAL ID CODE INTO L
042718,000442: 05,3761           56001                           XCH      L                                     #  AND ID BACK INTO A
042719,000443: 05,3762           13701                           TCF      DNTMEXIT                              #  SEND DOWNLIST ID CODE(S).
042720,000444: 
042721,000445: 05,3763           34745        WOTEST             CA       BIT7                                  #  AT THE BEGINNING OF THE LIST THE WORD
042722,000446: 05,3764           00006                           EXTEND                                         #  ORDER BIT WILL BE SET BACK TO ZERO
042723,000447: 05,3765           02013                           RAND     CHAN13                                
042724,000448: 05,3766           10000                           CCS      A                                     
042725,000449: 05,3767           00335                           TC       DNTMGOTO                              
042726,000450: 05,3770           34745                           CA       BIT7                                  
042727,000451: 05,3771           13512                           TCF      WO1                                   
042728,000452: 

End of include-file DOWN-TELEMETRY_PROGRAM.agc.  Parent file is MAIN.agc