Source Code
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These source code files are a reconstruction of Sundance, the Apollo 9 LM (Lunar Module) AGC
(Apollo Guidance Computer) flight software, created from binary dumps of original core rope
program modules, as follows:
Since only binary dumps (rather than listings) of Sundance are available as source material, all comments and labels are approximate. They have been taken from other AGC programs where possible, or, in some places, written from scratch to match what we believe would have been in the original listing. |
038529,000002: ## Copyright: Public domain.
038530,000003: ## Filename: DOWN-TELEMETRY_PROGRAM.agc
038531,000004: ## Purpose: A section of a reconstructed, mixed version of Sundance
038532,000005: ## It is part of the reconstructed source code for the Lunar
038533,000006: ## Module's (LM) Apollo Guidance Computer (AGC) for Apollo 9.
038534,000007: ## No original listings of this program are available;
038535,000008: ## instead, this file was created via disassembly of dumps
038536,000009: ## of various revisions of Sundance core rope modules.
038537,000010: ## Assembler: yaYUL
038538,000011: ## Contact: Ron Burkey <info@sandroid.org>.
038539,000012: ## Website: www.ibiblio.org/apollo/index.html
038540,000013: ## Mod history: 2020-06-17 MAS Created from Luminary 69.
038541,000014: ## 2021-05-30 ABS Removed WO1 symbol not present in Luminary 69.
038542,000015:
038543,000016: ## Sundance 292
038544,000017:
038545,000018: # PROGRAM NAME - DOWN TELEMETRY PROGRAM
038546,000019: # MOD NO. - 0 TO COMPLETELY REWRITE THE DOWN TELEMETRY PROGRAM AND DOWNLINK ERASABLE DUMP PROGRAM FOR THE
038547,000020: # PURPOSE OF SAVING APPROXIMATELY 150 WORDS OF CORE STORAGE.
038548,000021: # THIS CHANGE REQUIRES AN ENTIRELY NEW METHOD OF SPECIFYING DOWNLINK LISTS.REFER TO DOWNLINK
038549,000022: # LISTS LOG SECTION FOR MORE DETAILS. HOWEVER THIS CHANGE WILL NOT AFFECT THE GROUND PROCESSING
038550,000023: # OF DOWN TELEMETRY DATA.
038551,000024: # MOD BY - KILROY, SMITH, DEWITT
038552,000025: # DATE - 02OCT67
038553,000026: # AUTHORS - KILROY, SMITH, DEWITT, DEWOLF, FAGIN
038554,000027: # LOG SECTION - DOWN-TELEMETRY PROGRAM
038555,000028:
038556,000029: # FUNCTIONAL DESCRIPTION - THIS ROUTINE IS INITIATED BY TELEMETRY END
038557,000030: # PULSE FROM THE DOWNLINK TELEMETRY CONVERTER. THIS PULSE OCCURS
038558,000031: # AT 50 TIMES PER SEC (EVERY 20 MS) THEREFORE DODOWNTM IS
038559,000032: # EXECUTED AT THESE RATES. THIS ROUTINE SELECTS THE APPROPRIATE
038560,000033: # AGC DATA TO BE TRANSMITTED DOWNLINK AND LOADS IT INTO OUTPUT
038561,000034: # CHANNELS 34 AND 35. THE INFORMATION IS THEN GATED OUT FROM THE
038562,000035: # LGC IN SERIAL FASHION.
038563,000036: # THIS PROGRAM IS CODED FOR A 2 SECOND DOWNLIST. SINCE DOWNRUPTS
038564,000037: # OCCUR EVERY 20 MS AND 2 AGC COMPUTER WORDS CAN BE PLACED IN
038565,000038: # CHANNELS 34 AND 35 DURING EACH DOWNRUPT THE PROGRAM IS CAPABLE
038566,000039: # OF SENDING 200 AGC WORDS EVERY 2 SECONDS.
038567,000040: # CALLING SEQUENCE - NONE
038568,000041: # PROGRAM IS ENTERED VIA TCF DODOWNTM WHICH IS EXECUTED AS A
038569,000042: # RESULT OF A DOWNRUPT. CONTROL IS RETURNED VIA TCF RESUME WHICH
038570,000043: # IN EFFECT IS A RESUME.
038571,000044: # SUBROUTINES CALLED - NONE
038572,000045: # NORMAL EXIT MODE - TCF RESUME
038573,000046: # ALARM OR ABORT EXIT MODE - NONE
038574,000047: # RESTART PROTECTION:
038575,000048: # ON A FRESH START AND RESTART THE 'STARTSUB' SUBROUTINE WILL INITIALIZE THE DOWNLIST POINTER (ACTUALLY
038576,000049: # DNTMGOTO) TO THE BEGINNING OF THE CURRENT DOWNLIST (I.E. CURRENT CONTENTS OF DNLSTADR). THIS HAS THE
038577,000050: # EFFECT OF IGNORING THE REMAINDER OF THE DOWNLIST WHICH THE DOWN-TELEMETRY PROGRAM WAS WORKING ON WHEN
038578,000051: # THE RESTART (OR FRESH START) OCCURRED AND RESUME DOWN TELEMETRY FROM THE BEGINNING OF THE CURRENT
038579,000052: # DOWNLIST.
038580,000053: # ALSO OF INTEREST IS THE FACT THAT ON A RESTART THE AGC WILL ZERO DOWNLINK CHANNELS 13, 34 AND 35.
038581,000054: # DOWNLINK LIST SELECTION:
038582,000055: # THE APPROPRIATE DOWNLINK LISTS ARE SELECTED BY THE FOLLOWING:
038583,000056: # 1. FRESH START
038584,000057: # 2. V37EXXE WHERE XX = THE MAJOR MODE BEING SELECTED.
038585,000058: # 3. UPDATE PROGRAM (P27)
038586,000059: # 4. NON-V37 SELECTABLE TYPE PROGRAMS (E.G. AGS INITIALIZATION (SUNDANCE, LUMINARY) AND P61-P62
038587,000060: # TRANSITION (COLOSSUS) ETC.).
038588,000061: # DOWNLINK LIST RULES AND LIMITATIONS:
038589,000062: # READ SECTION(S) WHICH FOLLOW 'DEBRIS' WRITEUP.
038590,000063: # OUTPUT - EVERY 2 SECONDS 100 DOUBLE PRECISION WORDS (I.E. 200 LGC
038591,000064: # COMPUTER WORDS) ARE TRANSMITTED VIA DOWNLINK.
038592,000065: # ERASABLE INITIALIZATION REQUIRED - NONE
038593,000066: # 'DNTMGOTO' AND 'DNLSTADR' ARE INITIALIZED BY THE FRESH START PROGRAM.
038594,000067: # DEBRIS (ERASABLE LOCATIONS DESTROYED BY THIS PROGRAM) -
038595,000068: # LDATALST,DNTMBUFF TO DNTMBUFF +21D,TMINDEX,DNQ.
038596,000069:
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038598,000071:
038599,000072: # DODOWNTM IS ENTERED EVERY 20 MS BY AN INTERRUPT TRIGGERED BY THE
038600,000073: # RECEIPT OF AN ENDPULSE FROM THE SPACECRAFT TELEMETRY PROGRAMMER.
038601,000074:
038602,000075: # NOTES REGARDING DOWNLINK LISTS ASSOCIATED WITH THIS PROGRAM:
038603,000076: # 1. DOWNLISTS. - DOWNLISTS MUST BE COMPILED IN THE SAME BANK AS THE
038604,000077: # DOWN-TELEMETRY PROGRAM. THIS IS DONE FOR EASE OF CODING, FASTER
038605,000078: # EXECUTION.
038606,000079: # 2. EACH DOWNLINK LIST CONSISTS OF A CONTROL LIST AND A NUMBER OF
038607,000080: # SUBLISTS.
038608,000081: # 3. A SUBLIST REFERS TO A SNAPSHOT OR DATA COMMON TO THE SAME OR OTHER
038609,000082: # DOWNLINK LISTS. ANY SUBLIST CONTAINING COMMON DATA NEEDS TO BE
038610,000083: # CODED ONLY ONCE FOR THE APPLICABLE DOWNLINK LISTS.
038611,000084: # 4. SNAPSHOT SUBLISTS REFER SPECIFICALLY TO HOMOGENOUS DATA WHICH MUST BE
038612,000085: # SAVED IN A BUFFER DURING ONE DOWNRUPT.
038613,000086: # 5. THE 1DNADR FOR THE 1ST WORD OF SNAPSHOT DATA IS FOUND AT THE END
038614,000087: # OF EACH SNAPSHOT SUBLIST, SINCE THE PROGRAM CODING SENDS THIS DP WORD
038615,000088: # IMMEDIATELY AFTER STORING THE OTHERS IN THE SNAPSHOT BUFFER.
038616,000089: # 6. ALL LISTS ARE COMBINATIONS OF CODED ERASABLE ADDRESS CONSTANTS
038617,000090: # CREATED FOR THE DOWNLIST PROGRAM.
038618,000091: # A. 1DNADR 1-WORD DOWNLIST ADDRESS.
038619,000092: # SAME AS ECADR, BUT USED WHEN THE WORD ADDRESSED IS THE LEFT
038620,000093: # HALF OF A DOUBLE-PRECISION WORD FOR DOWN TELEMETRY.
038621,000094: # B. 2DNADR - 6DNADR N-WORD DOWNLIST ADDRESS, N = 2 - 6.
038622,000095: # SAME AS 1DNADR, BUT WITH THE 4 UNUSED BITS OF THE ECADR FORMAT
038623,000096: # FILLED IN WITH 0001-0101. USED TO POINT TO A LIST OF N DOUBLE-
038624,000097: # PRECISION WORDS, STORED CONSECUTIVELY, FOR DOWN TELEMETRY.
038625,000098: # C. DNCHAN DOWNLIST CHANNEL ADDRESS.
038626,000099: # SAME AS 1DNADR, BUT WITH PREFIX BITS 0111. USED TO POINT TO
038627,000100: # A PAIR OF CHANNELS FOR DOWN TELEMETRY.
038628,000101: # D. DNPTR DOWN TELEMETRY SUBLIST POINTER.
038629,000102: # SAME AS CAF BUT TAGGED AS A CONSTANT. USED IN CONTROL LIST TO POINT TO A SUBLIST.
038630,000103: # CAUTION--- A DNPTR CANNOT BE USED IN A SUBLIST.
038631,000104: # 7. THE WORD ORDER CODE IS SET TO ZERO AT THE BEGINNING OF EACH DOWNLIST (I.E. CONTROL LIST) AND WHEN
038632,000105: # A '1DNADR TIME2' IS DETECTED IN THE CONTROL LIST (ONLY).
038633,000106: # 8. IN THE SNAPSHOT SUBLIST ONLY, THE DNADR'S CANNOT POINT TO THE FIRST WORD OF ANY EBANK.
038634,000107:
038635,000108: # DOWNLINK LIST RESTRICTIONS:
038636,000109: # (THE FOLLOWING POINTS MAY BE LISTED ELSEWHERE BUT ARE LISTED HERE SO IT IS CLEAR THAT THESE THINGS CANNOT BE
038637,000110: # DONE)
038638,000111: # 1. SNAPSHOT DOWNLIST:
038639,000112: # (A) CANNOT CONTAIN THE FOLLOWING ECADRS (I.E. 1DNADR'S): 0, 400, 1000, 1400, 2000, 2400, 3000, 3400.
038640,000113: # (B) CAN CONTAIN ONLY 1DNADR'S
038641,000114: # 2. ALL DOWNLINKED DATA (EXCEPT CHANNELS) IS PICKED UP BY A <DCA<SO DOWNLINK LISTS CANNOT CONTAIN THE
038642,000115: # EQUIVALENT OF THE FOLLOWING ECADRS (I.E. IDNADRS): 377, 777, 1377, 1777, 2377, 27777, 3377, 3777.
038643,000116: # (NOTE: THE TERM EQUIVALENT ' MEANT THAT THE IDNADR TO 6DNADR WILL BE PROCESSED LIKE 1 TO 6 ECADRS)
038644,000117: # 3. CONTROL LISTS AND SUBLISTS CANNOT HAVE ENTRIES = OCTAL 00000 OR OCTAL 77777
038645,000118: # 4. THE '1DNADR TIME2' WHICH WILL CAUSE THE DOWNLINK PROGRAM TO SET THE WORDER CODE TO 3 MUST APPEAR IN THE
038646,000119: # CONTROL SECTION OF THE DOWNLIST.
038647,000120:
038648,000121: # 5. 'DNCHAN 0' CANNOT BE USED.
038649,000122:
038650,000123: # 6. 'DNPTR 0' CANNOT BE USED.
038651,000124:
038652,000125: # 7. DNPTR CANNOT APPEAR IN A SUBLIST.
038653,000126:
038654,000127: # EBANK SETTINGS
038655,000128: # IN THE PROCESS OF SETTING THE EBANK (WHEN PICKING UP DOWNLINK DATA) THE DOWN TELEMETRY PROGRAM PUTS
038656,000129: # 'GARBAGE' INTO BITS15-12 OF EBANK. HUGH BLAIR-SMITH WARNS US THAT BITS15-12 OF EBANK MAY BECOME
038657,000130: # SIGNIFICANT SOMEDAY IN THE FUTURE. IF/WHEN THAT HAPPENS, THE PROGRAM SHOULD INSURE (BY MASKING ETC.)
038658,000131: # THAT BITS15-12 OF EBANK ARE ZERO.
038659,000132:
038660,000133: # INITIALIZATION REQUIRED - TO INTERRUPT CURRENT LIST AND START A NEW ONE..
038661,000134: # 1. ADRES OF DOWNLINK LIST INTO DNLSTADR
038662,000135: # 2. NEGONE INTO SUBLIST
038663,000136: # 3. NEGONE INTO DNECADR
038664,000137:
038665,000138: 22,3644 BANK 22
038666,000139: 05,2000 SETLOC DOWNTELM
038667,000140: 05,2000 BANK
038668,000141:
038669,000142: 05,3146 0340 EBANK= DNTMBUFF
038670,000143:
038671,000144: 05,3146 COUNT* $$/DPROG
038672,000145: 05,3146 54016 DODOWNTM TS BANKRUPT
038673,000146: 05,3147 00006 EXTEND
038674,000147: 05,3150 22012 QXCH QRUPT # SAVE Q
038675,000148: 05,3151 35020 CA BIT7 # SET WORD ORDER CODE TO 1. EXCEPTION- AT
038676,000149: 05,3152 00006 EXTEND # THE BEGINNING OF EACH LIST THE WORD
038677,000150: 05,3153 05013 WOR CHAN13 # CODE WILL BE SET BACK TO 0.
038678,000151: 05,3154 00335 TC DNTMGOTO # GO TO APPROPRIATE PHASE OF PROGRAM
038679,000152:
038680,000153: 05,3155 37721 DNPHASE1 CA NEGONE # INITIALIZE ALL CONTROL WORDS
038681,000154: 05,3156 54337 TS SUBLIST # WORDS TO MINUS ONE
038682,000155: 05,3157 54336 TS DNECADR
038683,000156: 05,3160 33301 CA LDNPHAS2 # SET DNTMGOTO =O ALL SUBSEQUENT DOWNRUPTS
038684,000157: 05,3161 54335 TS DNTMGOTO # GO TO DNPHASE2
038685,000158: 05,3162 13175 TCF 1STLIST
038686,000159: 05,3163 10336 DNPHASE2 CCS DNECADR # SENDING OF DATA IN PROGRESS
038687,000160: 05,3164 03314 DODNADR TC FETCH2WD # YES - THEN FETCH THE NEXT 2 SP WORDS
038688,000161: 05,3165 77753 MINTIME2 -1DNADR TIME2 # NEGATIVE OF TIME2 1DNADR
038689,000162: 05,3166 13167 TCF +1 # (ECADR OF 3776 + 74001 = 77777)
038690,000163:
038691,000164: 05,3167 10337 CCS SUBLIST # IS THE SUBLIST IN CONTROL
038692,000165: 05,3170 13327 TCF NEXTINSL # YES
038693,000166: 05,3171 74001 DNADRDCR OCT 74001 # DNADR COUNT AND ECADR DECREMENTER
038694,000167:
038695,000168: 05,3172 10334 CHKLIST CCS CTLIST # IT WILL BE NEGATIVE AT END OF LIST
038696,000169: 05,3173 13204 TCF NEXTINCL
038697,000170: 05,3174 13201 TCF NEWLIST
038698,000171: 05,3175 35030 1STLIST CAF ZERO
038699,000172: 05,3176 54334 TS CTLIST
038700,000173: 05,3177 40332 CS DNLSTCOD
038701,000174: 05,3200 13417 TCF SENDID +3
038702,000175: 05,3201 50332 NEWLIST INDEX DNLSTCOD
038703,000176: 05,3202 32260 CA DNTABLE # INITIALIZE CTLIST WITH
038704,000177: 05,3203 54334 TS CTLIST # STARTING ADDRESS OF NEW LIST
038705,000178: 05,3204 50334 NEXTINCL INDEX CTLIST
038706,000179: 05,3205 30000 CA 0
038707,000180: 05,3206 10000 CCS A
038708,000181: 05,3207 24334 INCR CTLIST # SET POINTER TO PICK UP NEXT CTLIST WORD
038709,000182: 05,3210 13214 TCF +4 # ON NEXT ENTRY TO PROG. (A SHOULD NOT =0)
038710,000183: 05,3211 56334 XCH CTLIST # SET CTLIST TO NEGATIVE AND PLACE(CODING)
038711,000184: 05,3212 40000 COM # UNCOMPLEMENTED DNADR INTO A. (FOR LA)
038712,000185: 05,3213 56334 XCH CTLIST # (ST IN )
038713,000186: 05,3214 24000 +4 INCR A # (CTLIST)
038714,000187: 05,3215 54336 TS DNECADR # SAVE DNADR
038715,000188: 05,3216 63165 AD MINTIME2 # TEST FOR TIME2 (NEG. OF ECADR)
038716,000189: 05,3217 10000 CCS A
038717,000190: 05,3220 13224 TCF SETWO +1 # DON'T SET WORD ORDER CODE
038718,000191: 05,3221 47777 MINB1314 OCT 47777 # MINUS BIT 13 AND 14 (CAN'T GET HERE)
038719,000192: 05,3222 13224 TCF SETWO +1 # DON'T SET WORD ORDER CODE
038720,000193: 05,3223 03246 SETWO TC WOZERO # GO SET WORD ORDER CODE TO ZERO.
038721,000194: 05,3224 30336 +1 CA DNECADR # RELOAD A WITH THE DNADR.
038722,000195: 05,3225 63221 +2 AD MINB1314 # IS THIS A REGULAR DNADR?
038723,000196: 05,3226 00006 EXTEND
038724,000197: 05,3227 63314 BZMF FETCH2WD # YES. (A MUST NEVER BE ZERO)
038725,000198: 05,3230 67712 AD MINB12 # NO- IS IT A POINTER (DNPTR) OR A
038726,000199: 05,3231 00006 EXTEND # CHANNEL(DNCHAN)
038727,000200: 05,3232 63252 BZMF DODNPTR # IT'S A POINTER. (A MUST NEVER BE ZERO)
038728,000201:
038729,000202: 05,3233 00006 DODNCHAN TC 6 # (EXECUTED AS EXTEND) IT S A CHANNEL
038730,000203: 05,3234 50336 INDEX DNECADR
038731,000204: 05,3235 44000 INDEX 0 -4000 # (EXECUTED AS READ)
038732,000205: 05,3236 54001 TS L
038733,000206: 05,3237 00006 TC 6 # (EXECUTED AS EXTEND)
038734,000207: 05,3240 50336 INDEX DNECADR
038735,000208: 05,3241 43777 INDEX 0 -4001 # (EXECUTED AS READ)
038736,000209: 05,3242 56336 XCH DNECADR # SET DNECADR
038737,000210: 05,3243 40000 COM # TO MINUS
038738,000211: 05,3244 56336 XCH DNECADR # WHILE PRESERVING A.
038739,000212: 05,3245 13342 TCF DNTMEXIT # GO SEND CHANNELS
038740,000213:
038741,000214: 05,3246 45020 WOZERO CS BIT7
038742,000215: 05,3247 00006 EXTEND
038743,000216: 05,3250 03013 WAND CHAN13 # SET WORD ORDER CODE TO ZERO
038744,000217: 05,3251 00002 TC Q # RETURN TO CALLER
038745,000218:
038746,000219: 05,3252 50336 DODNPTR INDEX DNECADR # DNECADR CONTAINS ADRES OF SUBLIST
038747,000220: 05,3253 00000 0 0 # CLEAR AND ADD LIST ENTRY INTO A.
038748,000221: 05,3254 10000 CCS A # IS THIS A SNAPSHOT SUBLIST
038749,000222: 05,3255 30336 CA DNECADR # NO, IT IS A REGULAR SUBLIST.
038750,000223: 05,3256 13326 TCF DOSUBLST # A MUST NOT BE ZERO.
038751,000224:
038752,000225: 05,3257 56336 XCH DNECADR # YES, IT IS A SNAPSHOT SUBLIST.
038753,000226: 05,3260 54337 TS SUBLIST # C(DNECADR) INTO SUBLIST
038754,000227: 05,3261 35030 CAF ZERO # A INTO A
038755,000228: 05,3262 56336 XCH TMINDEX # (NOTE.. TMINDEX = DNECADR)
038756,000229:
038757,000230: # THE FOLLOWING CODING (FROM SNAPLOOP TO SNAPEND) IS FOR THE PURPOSE OF TAKING A SNAPSHOT OF 12 DP REGISTERS.
038758,000231: # THIS IS DONE BY SAVING 11 DP REGISTERS IN DNTMBUFF AND SENDING THE FIRST DP WORD IMMEDIATELY.
038759,000232: # THE SNAPSHOT PROCESSING IS THE MOST TIME CONSUMING AND THEREFORE THE CODING AND LIST STRUCTURE WERE DESIGNED
038760,000233: # TO MINIMIZE TIME. THE TIME OPTIMIZATION RESULTS IN RULES UNIQUE TO THE SNAPSHOT PORTION OF THE DOWNLIST.
038761,000234: # THESE RULES ARE......
038762,000235: # 1. ONLY 1DNADR'S CAN APPEAR IN THE SNAPSHOT SUBLIST
038763,000236: # 2. THE 1DNADR'S CANNOT REFER TO THE FIRST LOCATION IN ANY BANK.
038764,000237:
038765,000238: 05,3263 54003 SNAPLOOP TS EBANK # SET EBANK
038766,000239: 05,3264 74371 MASK LOW8 # ISOLATE RELATIVE ADDRESS
038767,000240: 05,3265 00006 EXTEND
038768,000241: 05,3266 50000 INDEX A
038769,000242: 05,3267 E3,1401 EBANK= 1401
038770,000243: 05,3267 31402 DCA 1401 # PICK UP 2 SNAPSHOT WORDS.
038771,000244: 05,3270 0340 EBANK= DNTMBUFF
038772,000245: 05,3270 50336 INDEX TMINDEX
038773,000246: 05,3271 52341 DXCH DNTMBUFF # STORE 2 SNAPSHOT WORDS IN BUFFER
038774,000247: 05,3272 24336 INCR TMINDEX # SET BUFFER INDEX FOR NEXT 2 WORDS.
038775,000248: 05,3273 24336 INCR TMINDEX
038776,000249: 05,3274 24337 SNAPAGN INCR SUBLIST # SET POINTER TO NEXT 2 WORDS OF SNAPSHOT
038777,000250: 05,3275 50337 INDEX SUBLIST
038778,000251: 05,3276 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
038779,000252: 05,3277 10000 CCS A # TEST FOR LAST TWO WORDS OF SNAPSHOT.
038780,000253: 05,3300 13263 TCF SNAPLOOP # NOT LAST TWO.
038781,000254: 05,3301 03163 LDNPHAS2 GENADR DNPHASE2
038782,000255: 05,3302 56337 XCH SUBLIST # YES, LAST. SAVE A.
038783,000256: 05,3303 40000 COM # SET DNECADR AND
038784,000257: 05,3304 54336 TS DNECADR # SUBLIST POINTERS
038785,000258: 05,3305 56337 XCH SUBLIST # TO NEGATIVE VALUES.
038786,000259: 05,3306 54003 TS EBANK
038787,000260: 05,3307 74371 MASK LOW8
038788,000261: 05,3310 00006 EXTEND
038789,000262: 05,3311 50000 INDEX A
038790,000263: 05,3312 E3,1401 EBANK= 1401
038791,000264: 05,3312 31402 DCA 1401 # PICK UP FIRST 2 WORDS OF SNAPSHOT.
038792,000265: 05,3313 0340 EBANK= DNTMBUFF
038793,000266: 05,3313 13342 SNAPEND TCF DNTMEXIT # NOW GO SEND THEM.
038794,000267:
038795,000268: 05,3314 30336 FETCH2WD CA DNECADR
038796,000269: 05,3315 54003 TS EBANK # SET EBANK
038797,000270: 05,3316 74371 MASK LOW8 # ISOLATE RELATIVE ADDRESS
038798,000271: 05,3317 54001 TS L
038799,000272: 05,3320 33171 CA DNADRDCR # DECREMENT COUNT AND ECADR
038800,000273: 05,3321 26336 ADS DNECADR
038801,000274: 05,3322 00006 EXTEND
038802,000275: 05,3323 50001 INDEX L
038803,000276: 05,3324 E3,1400 EBANK= 1400
038804,000277: 05,3324 31401 DCA 1400 # PICK UP 2 DATA WORDS
038805,000278: 05,3325 0340 EBANK= DNTMBUFF
038806,000279: 05,3325 13342 TCF DNTMEXIT # NOW GO SEND THEM.
038807,000280:
038808,000281: 05,3326 54337 DOSUBLST TS SUBLIST # SET SUBLIST POINTER
038809,000282: 05,3327 50337 NEXTINSL INDEX SUBLIST
038810,000283: 05,3330 00000 0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
038811,000284: 05,3331 10000 CCS A # IS IT THE END OF THE SUBLIST
038812,000285: 05,3332 24337 INCR SUBLIST # NO -
038813,000286: 05,3333 13337 TCF +4
038814,000287: 05,3334 56337 XCH SUBLIST # SAVE A.
038815,000288: 05,3335 40000 COM # SET SUBLIST TO MINUS
038816,000289: 05,3336 56337 XCH SUBLIST # RETRIEVE A.
038817,000290: 05,3337 24000 +4 INCR A
038818,000291: 05,3340 54336 TS DNECADR # SAVE DNADR
038819,000292: 05,3341 13225 TCF SETWO +2 # GO USE COMMON CODING (PROBLEMS WOULD
038820,000293: # OCCUR IF THE PROGRAM ENCOUNTERED A
038821,000294: # DNPTR NOW)
038822,000295:
038823,000296: 05,3342 00006 DNTMEXIT EXTEND # DOWN-TELEMETRY EXIT
038824,000297: 05,3343 01034 WRITE DNTM1 # TO SEND A + L TO CHANNELS 34 + 35
038825,000298: 05,3344 30001 CA L # RESPECTIVELY
038826,000299: 05,3345 00006 TMEXITL EXTEND
038827,000300: 05,3346 01035 WRITE DNTM2
038828,000301: 05,3347 15330 TMRESUME TCF RESUME # EXIT TELEMETRY PROGRAM VIA RESUME.
038829,000302:
038830,000303: 05,3350 7712 MINB12 EQUALS -1/8
038831,000304: 05,3350 0336 DNECADR EQUALS TMINDEX
038832,000305: 05,3350 0334 CTLIST EQUALS LDATALST
038833,000306: 05,3350 0337 SUBLIST EQUALS DNQ
038834,000307:
038835,000308: # SUBROUTINE NAME- DNDUMP
038836,000309: # FUNCTIONAL DESCRIPTION - TO SEND (DUMP) ALL ERASABLE STORAGE 'N' TIMES.(N=1 TO 4). BANKS ARE SENT ONE AT A TIME
038837,000310: # EACH BANK IS PRECEEDED BY AN ID WORD, SYNCH BITS, ECADR AND TIME1 FOLLOWED BY THE 256D WORDS OF EACH
038838,000311: # EBANK. EBANKS ARE DUMPED IN ORDER (I.E. EBANK 0 FIRST, THEN EBANK1 ETC.)
038839,000312: # CALLING SEQUENCE- THE GROUND OR ASTRONAUT BY KEYING V74E CAN INITIALIZE THE DUMP.
038840,000313: # AFTER KEYING IN V74E THE CURRENT DOWNLIST WILL BE IMMEDIATELY TERMINATED AND THE DOWNLINK ERASABLE DUMP
038841,000314: # WILL BEGIN.
038842,000315: # ONCE INITIATED THE DOWNLINK ERASABLE DUMP CAN BE TERMINATED (AND INTERRUPTED DOWNLIST REINSTATED) ONLY
038843,000316: # BY THE FOLLOWING:
038844,000317: # 1. A FRESH START
038845,000318: # 2. COMPLETION OF ALL DOWNLINK DUMPS REQUESTED (ACCORDING TO BITS SET IN DUMPCNT). NOTE THAT DUMPCNT
038846,000319: # CAN BE ALTERED BY A V21N01.
038847,000320: # 3. AND INVOLUNTARILY BY A RESTART.
038848,000321: # NORMAL EXIT MODE - TCF DNPHASE1
038849,000322: # ALARM OR ABORT MODE - NONE
038850,000323: # *SUBROUTINES CALLED - NONE.
038851,000324: # ERASABLE INITIALIZATION REQUIRED -
038852,000325: # DUMPCNT OCT 20000 IF 4 COMPLETE ERASABLE DUMPS ARE DESIRED
038853,000326: # DUMPCNT OCT 10000 IF 2 COMPLETE ERASABLE DUMPS ARE DESIRED
038854,000327: # DUMPCNT OCT 04000 IF 1 COMPLETE ERASABLE DUMP IS DESIRED
038855,000328: # DEBRIS - DUMPLOC, DUMPSW, DNTMGOTO, EBANK AND CENTRAL REGISTERS
038856,000329: # TIMING - TIME (IN SECS) = ((NO.DUMPS)*(NO.EBANKS)*(WDSPEREBANK + NO.IDWDS)) / NO.WDSPERSEC
038857,000330: # TIME (IN SECS) = ( 4 )*( 8 )*( 256 + 4 ) / 100
038858,000331: # THUS TIME (IN SECS TO SEND DUMP OF ERASABLE 4 TIMES VIA DOWNLINK) = 83.2 SECONDS
038859,000332:
038860,000333: # STRUCTURE OF ONE EBANK AS IT IS SENT BY DOWNLINK PROGRAM -
038861,000334: # (REMINDER - THIS ONLY DESCRIBES ONE OF THE 8 EBANKS X 4 (DUMPS) = 32 EBANKS WHICH WILL BE SENT BY DNDUMP)
038862,000335: # DOWNLIST W
038863,000336: # WORD TAKEN FROM CONTENTS OF EXAMPLE O COMMENTS
038864,000337: # 1 ERASID 0177X 0 DOWNLIST I.D. FOR DOWNLINK ERASABLE DUMP (X=7 CSM, 6 LM)
038865,000338: # 2 LOWIDCOD 77340 1 DOWNLINK SYNCH BITS. (SAME ONE USED IN ALL OTHER DOWNLISTS)
038866,000339: # 3 DUMPLOC 13400 1 (SEE NOTES ON DUMPLOC) 1 = 3RD ERAS DUMP, 3400=ECADR OF 5TH WD
038867,000340: # 4 TIME1 14120 1 TIME IN CENTISECONDS
038868,000341: # 5 FIRST WORD OF EBANK X 03400 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1400 (ECADR 3400)
038869,000342: # 6 2ND WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1401 (ECADR 3401)
038870,000343: # 7 3RD WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1402 (ECADR 3402)
038871,000344: # . 1
038872,000345: # . 1
038873,000346: # . 1
038874,000347: # 260D 256TH WORD OF EBANK X 03777 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1777 (ECADR 3777)
038875,000348:
038876,000349: # NOTE- DUMPLOC CONTAINS THE COUNTER AND ECADR FOR EACH WORD BEING SENT.
038877,000350: # THE BIT STRUCTURE OF DUMPLOC IS FOLLOWS---
038878,000351: # X = NOT USED
038879,000352: # X ABC EEE RRRRRRRR ABC = ERASABLE DUMP COUNTER (I.E. ABC = 0,1,2 OR 3 WHICH MEANS THAT
038880,000353: # COMPLETE ERASABLE DUMP NUMBER 1,2,3 OR 4 RESPECTIVELY IS IN PROGRESS)
038881,000354: # EEE = EBANK BITS
038882,000355: # RRRRRRRR = RELATIVE ADDRESS WITHIN AN EBANK.
038883,000356:
038884,000357: 05,3350 35030 DNDUMPI CA ZERO # INITIALIZE DOWNLINK
038885,000358: 05,3351 54336 TS DUMPLOC # ERASABLE DUMP
038886,000359: 05,3352 03414 +2 TC SENDID # GO SEND ID AND SYNCH BITS
038887,000360: 05,3353 33362 CA LDNDUMP1 # SET DNTMGOTO
038888,000361: 05,3354 54335 TS DNTMGOTO # TO LOCATION FOR NEXT PASS
038889,000362: 05,3355 30025 CA TIME1 # PLACE TIME1
038890,000363: 05,3356 56001 XCH L # INTO L
038891,000364: 05,3357 30336 CA DUMPLOC # AND ECADR OF THIS EBANK INTO A
038892,000365: 05,3360 13342 TCF DNTMEXIT # SEND DUMPLOC AND TIME1
038893,000366:
038894,000367: 05,3361 03363 LDNDUMP ADRES DNDUMP
038895,000368: 05,3362 03376 LDNDUMP1 ADRES DNDUMP1
038896,000369:
038897,000370: 05,3363 35025 DNDUMP CA TWO # INCREMENT ECADR IN DUMPLOC
038898,000371: 05,3364 26336 ADS DUMPLOC # TO NEXT DP WORD TO BE
038899,000372: 05,3365 74371 MASK LOW8 # DUMPED AND SAVE IT.
038900,000373: 05,3366 10000 CCS A # IS THIS THE BEGINNING OF A NEW EBANK
038901,000374: 05,3367 13400 TCF DNDUMP2 # NO- THEN CONTINUE DUMPING
038902,000375: 05,3370 30336 CA DUMPLOC # YES- IS THIS THE END OF THE
038903,000376: 05,3371 70333 MASK DUMPCNT # N TH (N = 1 TO 4) COMPLETE ERASABLE
038904,000377: 05,3372 77674 MASK PRIO34 # DUMP (BIT14 FOR 4, BIT13 FOR 2 OR BIT12
038905,000378: 05,3373 10000 CCS A # FOR 1 COMPLETE ERASABLE DUMP(S)).
038906,000379: 05,3374 13155 TCF DNPHASE1 # YES- START SENDING INTERRUPTED DOWNLIST
038907,000380: # AGAIN
038908,000381: 05,3375 13352 TCF DNDUMPI +2 # NO- GO BACK AND INITIALIZE NEXT BANK
038909,000382:
038910,000383: 05,3376 33361 DNDUMP1 CA LDNDUMP # SET DNTMGOTO
038911,000384: 05,3377 54335 TS DNTMGOTO # FOR WORDS 3 TO 256D OF CURRENT EBANK
038912,000385:
038913,000386: 05,3400 30336 DNDUMP2 CA DUMPLOC
038914,000387: 05,3401 54003 TS EBANK # SET EBANK
038915,000388: 05,3402 74371 MASK LOW8 # ISOLATE RELATIVE ADDRESS.
038916,000389: 05,3403 54002 TS Q # (NOTE: MASK INSTRUCTION IS USED TO PICK
038917,000390: 05,3404 35027 CA NEG0 # UP ERASABLE REGISTERS SO THAT EDITING
038918,000391: 05,3405 54001 TS L # REGISTERS 20-23 WILL NOT BE ALTERED.)
038919,000392: 05,3406 50002 INDEX Q
038920,000393: 05,3407 E3,1400 EBANK= 1400 # PICK UP LOW ORDER REGISTER OF PAIR
038921,000394: 05,3407 71401 MASK 1401 # OF ERASABLE REGISTERS.
038922,000395: 05,3410 56001 XCH L
038923,000396: 05,3411 50002 INDEX Q # PICK UP HIGH ORDER REGISTER OF PAIR
038924,000397: 05,3412 71400 MASK 1400 # OF ERASABLE REGISTERS.
038925,000398: 05,3413 0340 EBANK= DNTMBUFF
038926,000399: 05,3413 13342 TCF DNTMEXIT # GO SEND THEM
038927,000400:
038928,000401: 05,3414 00006 SENDID EXTEND # **ENTRANCE USED BY ERASABLE DUMP PROG.**
038929,000402: 05,3415 22335 QXCH DNTMGOTO # SET DNTMGOTO SO NEXT TIME PROG WILL GO
038930,000403: 05,3416 35061 CAF ERASID # TO LOCATION FOLLOWING :TC SENDID:
038931,000404:
038932,000405: 05,3417 54001 TS L # **ENTRANCE USED BY REGULAR DOWNLINK PG**
038933,000406: 05,3420 03246 TC WOZERO # GO SET WORD ORDER CODE TO ZERO
038934,000407: 05,3421 32000 CAF LOWIDCOD # PLACE SPECIAL ID CODE INTO L
038935,000408: 05,3422 56001 XCH L # AND ID BACK INTO A
038936,000409: 05,3423 13342 TCF DNTMEXIT # SEND DOWNLIST ID CODE(S).
038937,000410:
End of include-file DOWN-TELEMETRY_PROGRAM.agc. Parent file is MAIN.agc