Source Code
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These source-code files are part of a reconstructed copy of Comanche 45, the
second release, though not the final mission release, of the Apollo 10
Command Module (CM) Apollo Guidance Computer (AGC) software. Comanche 45 was
preceded by Comanche 44 and followed by Comanche 45/2 (the flown release). The reconstruction
is believed to be exactly accurate, but in the absence of an actual Apollo-era
listing of Comanche 45, some explanation of the reconstruction process is needed
to insure confidence in that accuracy.
The starting point was the source code of Comanche 44 (itself previously accurately
reconstructed). Comanche 44 source code was then modified
by incorporating changes known from contemporary documentation to have been
made between revisions 44 and 45. The now-reconstructed Comanche 45 source code was
verified by assembling it and checking that the assembled code had
the expected known-correct memory-bank checksums.
Note that page numbers in the reconstructed code tend to match those in the Comanche 55, the
most-similar revision of Comanche for which we have access to an actual non-reconstructed hardcopy;
the source code would likely have different page numbers in a contemporary
Comanche 45 listing.
Annotations that were not present in the contemporary source code have been added to the reconstructed
code to justify each change relative to Comanche 44. Here's a guide to the Apollo documentation referenced
in those annotations:
There is also
a detailed commentary about the reconstruction process.
Comments expected to have been present in the original source code are prefixed with a single '#' symbol,
whereas comments added later are prefixed by "##" or "###". Report any errors
noted by creating an
issue report at the Virtual AGC
Project's GitHub repository.
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040862,000002: ## Copyright: Public domain.
040863,000003: ## Filename: TVCINITIALIZE.agc
040864,000004: ## Purpose: A section of Comanche revision 045.
040865,000005: ## It is part of the reconstructed source code for the
040866,000006: ## second release of the flight software for the Command
040867,000007: ## Module's (CM) Apollo Guidance Computer (AGC) for Apollo 10.
040868,000008: ## The code has been recreated from a copy of Comanche 055. It
040869,000009: ## has been adapted such that the resulting bugger words
040870,000010: ## exactly match those specified for Comanche 45 in NASA drawing
040871,000011: ## 2021153D, which gives relatively high confidence that the
040872,000012: ## reconstruction is correct.
040873,000013: ## Assembler: yaYUL
040874,000014: ## Contact: Ron Burkey <info@sandroid.org>.
040875,000015: ## Website: www.ibiblio.org/apollo/index.html
040876,000016: ## Mod history: 2020-12-06 MAS Created from Comanche 44.
040877,000017: ## 2020-12-12 MAS Added a possible implementation of PCR 747
040878,000018: ## (Remove TVCDAP initial attitude errors),
040879,000019: ## which makes the bank 17 checksum correct.
040880,000020: ## 2020-12-24 RSB Beefed up the reconstruction-justifying
040881,000021: ## annotation.
040882,000022:
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Page 937
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040884,000024: # NAME TVCDAPON (TVC DAP INITIALIZATION AND STARTUP CALL)
040885,000025: # LOG SECTION...TVCINITIALIZE SUBROUTINE...DAPCSM
040886,000026: # MODIFIED BY SCHLUNDT 21 OCTOBER 1968
040887,000027: # FUNCTIONAL DESCRIPTION
040888,000028: # PERFORMS TVCDAP INITIALIZATION (GAINS, TIMING PARAMETERS, FILTER VARIABLES, ETC.)
040889,000029: # COMPUTES STEERING (S40.8) GAIN KPRIMEDT, AND ZEROES PASTDELV,+1 VARIABLE
040890,000030: # MAKES INITIALIZATION CALL TO ..NEEDLER.. FOR TVC DAP NEEDLES-SETUP
040891,000031: # PERFORMS INITIALIZATION FOR ROLL DAP
040892,000032: # CALLS TVCEXECUTIVE AT TVCEXEC, VIA WAITLIST
040893,000033: # CALLS TVCDAP CDU-RATE INITIALIZATION PKG AT DAPINIT VIA T5
040894,000034: # PROVIDES FOR LOADING OF LOW-BANDWIDTH COEFFS AND GAINS AT SWICHOVR
040895,000035: # CALLING SEQUENCE - T5LOC=2CADR(TVCDAPON,EBANK=BZERO), T5=.6SECT5
040896,000036: # IN PARTICULAR, CALLED BY ..DOTVCON.. IN P40
040897,000037: # MRCLEAN AND TVCINIT4 ARE POSSIBLE RESTART ENTRY POINTS
040898,000038: # NORMAL EXIT MODE
040899,000039: # TCF RESUME
040900,000040: # SUBROUTINES CALLED
040901,000041: # NEEDLER, MASSPROP
040902,000042: # ALARM OR ABORT EXIT MODES
040903,000043: # NONE
040904,000044: # ERASABLE INITIALIZATION REQUIRED
040905,000045: # CSMMASS, LEMMASS, DAPDATR1 (FOR MASSPROP SUBROUTINE)
040906,000046: # TVC PAD LOADS (SEE EBANK6 IN ERASABLE ASSIGNMENTS)
040907,000047: # PACTOFF, YACTOFF, CDUX
040908,000048: # TVCPHASE AND THE T5 BITS OF FLAGWRD6 (SET AT DOTVCON IN P40)
040909,000049: # OUTPUT
040910,000050: # ALL TVC AND ROLL DAP ERASABLES, FLAGWRD6 (BITS 13,14), T5, WAITLIST
040911,000051: # DEBRIS
040912,000052: # NONE
040913,000053:
040914,000054: 42,3772 COUNT* $$/INIT
040915,000055: 17,2153 BANK 17
040916,000056: 17,2000 SETLOC DAPS7
040917,000057: 17,2000 BANK
040918,000058:
040919,000059: 17,2153 E6,1702 EBANK= BZERO
040920,000060:
040921,000061: 17,2153 22016 TVCDAPON LXCH BANKRUPT # T5 RUPT ARRIVAL (CALL BY DOTVCON - P40)
040922,000062: 17,2154 00006 EXTEND # SAVE Q REQUIRED IN RESTARTS (MRCLEAN AND
040923,000063: 17,2155 22012 QXCH QRUPT # TVCINIT4 ARE ENTRIES)
040924,000064: 17,2156 32534 MRCLEAN CAF NZERO # NUMBER TO ZERO, LESS ONE (MUST BE ODD)
040925,000065: # TVC RESTARTS ENTER HERE (NEW BANK)
040926,000066: 17,2157 10000 +1 CCS A
040927,000067: 17,2160 55447 TS CNTR
040928,000068: 17,2161 35021 CAF ZERO
040929,000069: 17,2162 54001 TS L
040930,000070: 17,2163 51447 INDEX CNTR
040931,000071: 17,2164 53530 DXCH OMEGAYC # FIRST (LAST) TWO LOCATIONS
040932,000072: 17,2165 11447 CCS CNTR
040933,000073: 17,2166 12157 TCF MRCLEAN +1
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Page 938
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040935,000075: 17,2167 00006 EXTEND # SET UP ANOTHER T5 RUPT TO CONTINUE
040936,000076: 17,2170 32551 DCA INITLOC2 # INITIALIZATION AT TVCINIT1
040937,000077: 17,2171 53313 DXCH T5LOC # THE PHSCHK2 ENTRY (REDOTVC) AT TVCDAPON
040938,000078: 17,2172 34777 CAF POSMAX # +3 IS IN ANOTHER BANK. MUST RESET
040939,000079: 17,2173 54030 TS TIME5 # BBCON TOO (FULL 2CADR), FOR THAT
040940,000080: 17,2174 15333 ENDMRC TCF RESUME # ENTRY.
040941,000081:
040942,000082: 17,2175 22016 TVCINIT1 LXCH BANKRUPT
040943,000083: 17,2176 00006 EXTEND
040944,000084: 17,2177 22012 QXCH QRUPT
040945,000085:
040946,000086: 17,2200 04740 TC IBNKCALL # UPDATE IXX, IAVG/TLX FOR DAP GAINS (R03
040947,000087: 17,2201 13366 CADR MASSPROP # OR NOUNS 46 AND 47 MUST BE CORRECT)
040948,000088:
040949,000089: 17,2202 30110 CAE EMDOT # SPS FLOW RATE, SCALED B+3 KG/CS
040950,000090: 17,2203 00006 EXTEND
040951,000091: 17,2204 72545 MP ONETHOU
040952,000092: 17,2205 55637 TS TENMDOT # 10-SEC MASS LOSS B+16 KG
040953,000093: 17,2206 40000 COM
040954,000094: 17,2207 61474 AD CSMMASS
040955,000095: 17,2210 55652 TS MASSTMP # DECREMENT FOR FIRST 10 SEC OF BURN
040956,000096:
040957,000097: 17,2211 31466 CAE DAPDATR1 # CHECK LEM-ON/OFF
040958,000098: 17,2212 75002 MASK BIT14
040959,000099: 17,2213 10000 CCS A
040960,000100: 17,2214 35017 CAF BIT1 # LEM-ON (BIT1)
040961,000101: 17,2215 55447 TS CNTR # LEM-OFF (ZERO)
040962,000102:
040963,000103: 17,2216 51447 INDEX CNTR # LOAD THE FILTER COEFFICIENTS
040964,000104: 17,2217 32531 CAF CSMCFADR
040965,000105: 17,2220 55722 TS COEFFADR
040966,000106: 17,2221 02422 TC LOADCOEF
040967,000107:
040968,000108: 17,2222 51447 INDEX CNTR # PICK UP LM-OFF,-ON KTLX/I
040969,000109: 17,2223 31416 CAE EKTLX/I # SCALED AT 1/(8 ASCREV) OF ACTUAL VALUE
040970,000110: 17,2224 55636 TS KTLX/I
040971,000111:
040972,000112: 17,2225 02462 TCR S40.15 # COMPUTE 1/CONACC, VARK
040973,000113:
040974,000114: 17,2226 41447 TVCINIT2 CS CNTR # PICK LM-OFF,-ON VALUE FOR FILTER PERIOD
040975,000115: 17,2227 50000 INDEX A # DETERMINATION:
040976,000116: 17,2230 35016 CAF BIT2 # BIT2 FOR CSM ONLY 40MS FILTER
040977,000117: 17,2231 55634 TS KPRIMEDT # BIT3 FOR CSM/LM 80MS FILTER
040978,000118:
040979,000119: 17,2232 40000 COM # PREPARE T5TVCDT
040980,000120: 17,2233 64777 AD POSMAX
040981,000121: 17,2234 65017 AD BIT1
040982,000122: 17,2235 55625 TS T5TVCDT
040983,000123:
040984,000124: 17,2236 45001 CS BIT15 # RESET SWTOVER FLAG
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Page 939
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040986,000126: 17,2237 70105 MASK FLAGWRD9
040987,000127: 17,2240 54105 TS FLAGWRD9
040988,000128:
040989,000129: 17,2241 51447 INDEX CNTR # PICK UP LEM-OFF,-ON KPRIME
040990,000130: 17,2242 31414 CAE EKPRIME # SCALED (100 PI)/16
040991,000131: 17,2243 00006 EXTEND
040992,000132: 17,2244 71634 MP KPRIMEDT # (TVCDT/2, SC.AT B+14 CS)
040993,000133: 17,2245 22000 LXCH A # SC.AT PI/8 (DIMENSIONLESS)
040994,000134: 17,2246 53635 DXCH KPRIMEDT
040995,000135:
040996,000136: 17,2247 51447 INDEX CNTR # PICK UP LEM-OFF,-ON REPFRAC
040997,000137: 17,2250 31421 CAE EREPFRAC
040998,000138: 17,2251 55642 TS REPFRAC
040999,000139:
041000,000140: 17,2252 51447 INDEX CNTR # PICK UP ONE-SHOT CORRECTION TIME
041001,000141: 17,2253 32540 CAF TCORR
041002,000142: 17,2254 55447 TS CNTR
041003,000143:
041004,000144: 17,2255 37716 CAF NEGONE # PREVENT STROKE TEST UNTIL CALLED
041005,000145: 17,2256 55654 TS STRKTIME
041006,000146:
041007,000147: 17,2257 34374 CAF NINETEEN # SET VCNTR FOR VARIABLE-GAIN UPDATES IN
041008,000148: 17,2260 55643 TS VCNTR # 10 SECONDS (TVCEXEC 1/2 SEC RATE)
041009,000149: 17,2261 55444 TS V97VCNTR # FOR ENGFAIL (R41) LOGIC
041010,000150:
041011,000151: 17,2262 31423 TVCINIT3 CAE PACTOFF # TRIM VALUES TO TRIM-TRACKERS, OUTPUT
041012,000152: 17,2263 55605 TS PDELOFF # TRACKERS, OFFSET-UPDATES, AND
041013,000153: 17,2264 55623 TS PCMD # OFFSET-TRACKER FILTERS
041014,000154: 17,2265 55601 TS DELPBAR # NOTE, LO-ORDER DELOFF,DELBAR ZEROED
041015,000155:
041016,000156: 17,2266 31424 CAE YACTOFF
041017,000157: 17,2267 55607 TS YDELOFF
041018,000158: 17,2270 55624 TS YCMD
041019,000159: 17,2271 55603 TS DELYBAR
041020,000160:
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Reconstruction: In Comanche 44, the two lines following this annotation read
ATTINIT CAF BIT1
TS TTMP1
The change is believed to be authorized by Program Change Request (PCR) 747. The description
of that PCR is known to be "Remove TVCDAP initial attitude errors", but unfortunately we don't
have the full text of the PCR.
Table A of COLOSSUS Memo #140, rev 2, "Final Content of COLOSSUS 2 (Comanche, Rev. 45)" notes PCR 747 as
a change incorporated into Comanche 45. Lacking the full text, deducing the specific form of the
code change is impossible, and it's necessarily to fall back on what we can infer by looking at
the corresponding code in Comanche 51.
The code in Comanche 51 that corresponds to the pair of instructions following this annotation is
ATTINIT CAE DAPDATR1 # ATTITUDE-ERROR INITIALIZATION LOGIC
MASK BIT13 # TEST FOR CSM OR CSM/LM
EXTEND
BZF NEEDLEIN # BYPASS INITIALIZATION FOR CSM/LM
CAF BIT1 # SET UP TEMPORARY COUNTER
+5 TS TTMP1
Simply importing this Comanche 51 code into Comanche 45 here does not work, in the sense that
memory-bank checksums are not correct. What the code leading up to BZF NEEDLEIN does is to
test to whether the CSM and LM are docked, and if not, then branches to NEEDLEIN. A simplified
alternative is therefore simply always to branch to NEEDLEIN without performing the docking test.
That's essentially what the following code does, and it produces the correct memory-bank checksum.
Comanche 44 code also does not have the docking test, and there is a Program Change Request
(PCR 749) which may call for such a test to be added at some later point. Nor does Comanche 44 have
the jump to NEEDLEIN. Thus the following code
is, in a sense, intermediate between Comanche 44 and 51, in that it does have NEEDLEIN, but does
not yet have the docking test.
But what about the missing CAF BIT1 instruction? Well, the code between
TCF NEEDLEIN and the program label NEEDLEIN is never executed. It has simply
been left in place to insure that the same number of memory words is used up, and hence that all
addresses referenced externally to bank 17 remain the same. This was important because the change
between Comanche 44 and 45 was intended to affect only core-rope module 3 — recall that there
were 6 memory modules altogether — thus minimizing the remanufacturing expense and effort.
Memory module 3 is, of course, the one containing memory banks 16 and 17 (among others).
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041063,000203: 17,2272 12317 ATTINIT TCF NEEDLEIN
041064,000204: 17,2273 55611 +1 TS TTMP1
041065,000205:
041066,000206: 17,2274 51611 INDEX TTMP1
041067,000207: 17,2275 31702 CA ERRBTMP # ERRBTMP CONTAINS RCS ATTITUDE ERRORS
041068,000208: 17,2276 00006 EXTEND # ERRORY & ERRORZ (P40 AT DOTVCON)
041069,000209: 17,2277 72537 MP 1/ATTLIM # .007325(ERROR) = 0 IF ERROR < 1.5 DEG
041070,000210: 17,2300 00006 EXTEND
041071,000211: 17,2301 12311 BZF +8D # |ERROR| LESS THAN 1.5 DEG
041072,000212: 17,2302 00006 EXTEND
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Page 940
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041074,000214: 17,2303 62306 BZMF +3 # |ERROR| > 1.5 DEG, AND NEG
041075,000215: 17,2304 32536 CA ATTLIM # |ERROR| > 1.5 DEG, AND POS
041076,000216: 17,2305 12307 TCF +2
041077,000217: 17,2306 42536 +3 CS ATTLIM
041078,000218: 17,2307 51611 +2 INDEX TTMP1
041079,000219: 17,2310 55702 TS ERRBTMP
041080,000220: 17,2311 11611 +8 CCS TTMP1 # TEST TEMPORARY COUNTER
041081,000221: 17,2312 12273 TCF ATTINIT +1 # BACK TO REPEAT FOR PITCH ERROR
041082,000222:
041083,000223: 17,2313 31702 CA ERRBTMP # ERRORS ESTABLISHED AND LIMITED
041084,000224: 17,2314 55575 TS PERRB
041085,000225: 17,2315 31703 CA ERRBTMP +1
041086,000226: 17,2316 55577 TS YERRB
041087,000227:
041088,000228: 17,2317 41501 NEEDLEIN CS RCSFLAGS # SET BIT 3 FOR INITIALIZATION PASS AND GO
041089,000229: 17,2320 75015 MASK BIT3 # TO NEEDLER. WILL CLEAR FOR TVC DAP
041090,000230: 17,2321 27501 ADS RCSFLAGS # (RETURNS AFTER CADR)
041091,000231: 17,2322 04740 TC IBNKCALL
041092,000232: 17,2323 42420 CADR NEEDLER
041093,000233:
041094,000234: 17,2324 35021 TVCINIT4 CAF ZERO # SET TVCPHASE TO INDICATE TVCDAPON-THRU-
041095,000235: 17,2325 55644 TS TVCPHASE # NEEDLEIN INITIALIZATION FINISHED.
041096,000236: # (POSSIBLE TVC-RESTART ENTRY)
041097,000237:
041098,000238: 17,2326 30032 CAE CDUX # PREPARE ROLL DAP
041099,000239: 17,2327 55662 TS OGANOW
041100,000240:
041101,000241: 17,2330 35003 CAF BIT13 # IF ENGINE IS ALREADY OFF, ENGINOFF HAS
041102,000242: 17,2331 00006 EXTEND # ALREADY ESTABLISHED THE POST-BURN
041103,000243: 17,2332 02011 RAND DSALMOUT # CSMMASS (MASSBACK DOES IT). DONT
041104,000244: 17,2333 00006 EXTEND # TOUCH CSMMASS. IF ENGINE IS ON,
041105,000245: 17,2334 12337 BZF +3 # THEN ITS OK TO DO THE COPYCYCLE
041106,000246: # EVEN BURNS LESS THAN 0.4 SEC ARE AOK
041107,000247:
041108,000248: 17,2335 31652 CAE MASSTMP # COPYCYCLE
041109,000249: 17,2336 55474 TS CSMMASS
041110,000250:
041111,000251: 17,2337 35036 +3 CAF .5SEC # CALL TVCEXECUTIVE (ROLLDAP CALL, ETC)
041112,000252: 17,2340 05245 TC WAITLIST
041113,000253: 17,2341 E6,1702 EBANK= BZERO
041114,000254: 17,2341 02715 34066 2CADR TVCEXEC
041115,000255:
041116,000256: 17,2343 00006 EXTEND # CALL FOR DAPINIT
041117,000257: 17,2344 32547 DCA DAPINIT5
041118,000258: 17,2345 53313 DXCH T5LOC
041119,000259: 17,2346 31625 CAE T5TVCDT # (ALLOW TIME FOR RESTART COMPUTATIONS)
041120,000260: 17,2347 54030 TS TIME5
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Page 941
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041122,000262: 17,2350 15333 ENDTVCIN TCF RESUME
041123,000263:
041124,000264: 17,2351 02354 PRESWTCH TCR SWICHOVR # ENTRY FROM V46
041125,000265:
041126,000266: 17,2352 04701 TC POSTJUMP # THIS PROVIDES AN EXIT FROM SWITCH-OVER
041127,000267: 17,2353 21272 CADR PINBRNCH # (PINBRNCH DOES A RELINT)
041128,000268:
041129,000269: 17,2354 00004 SWICHOVR INHINT
041130,000270: 17,2355 31644 CA TVCPHASE # SAVE TVCPHASE
041131,000271: 17,2356 55611 TS PHASETMP
041132,000272: 17,2357 45016 CS BIT2 # SET TVCPHASE = -2 (INDICATES SWITCH-OVER
041133,000273: 17,2360 55644 TS TVCPHASE # TO RESTART LOGIC)
041134,000274:
041135,000275: 17,2361 00006 +5 EXTEND # SAVE Q FOR RETURN (RESTART ENTRY POINT,
041136,000276: 17,2362 23613 QXCH RTRNLOC # TVCPHASE AND PHASETMP ALREADY SET)
041137,000277:
041138,000278: 17,2363 32535 CAF NZEROJR # ZEROING LOOP FOR FILTER STORAGE LOCS
041139,000279: 17,2364 55676 +8 TS CNTRTMP
041140,000280:
041141,000281: 17,2365 35021 MCLEANJR CA ZERO
041142,000282: 17,2366 54001 TS L
041143,000283: 17,2367 51676 INDEX CNTRTMP
041144,000284: 17,2370 53541 DXCH PTMP1 -1
041145,000285: 17,2371 11676 CCS CNTRTMP
041146,000286: 17,2372 10000 CCS A
041147,000287: 17,2373 12364 TCF SWICHOVR +8D
041148,000288:
041149,000289: 17,2374 40105 CS FLAGWRD9 # SET SWITCHOVER FLAG FOR DOWNLINK
041150,000290: 17,2375 75001 MASK BIT15
041151,000291: 17,2376 26105 ADS FLAGWRD9
041152,000292:
041153,000293: 17,2377 31420 CAE EKTLX/I +2 # LOW BANDWIDTH GAINS - DAP
041154,000294: 17,2400 55636 TS KTLX/I
041155,000295: 17,2401 02471 TCR S40.15 +7
041156,000296:
041157,000297: 17,2402 32542 CAF FKPRIMDT # - STEERING
041158,000298: 17,2403 55634 TS KPRIMEDT
041159,000299:
041160,000300: 17,2404 32543 CAF FREPFRAC # - TMC LOOP
041161,000301: 17,2405 55642 TS REPFRAC
041162,000302:
041163,000303: 17,2406 00006 EXTEND # UPDATE TRIM ESTIMATES
041164,000304: 17,2407 31602 DCA DELPBAR
041165,000305: 17,2410 53606 DXCH PDELOFF
041166,000306: 17,2411 00006 EXTEND
041167,000307: 17,2412 31604 DCA DELYBAR
041168,000308: 17,2413 53610 DXCH YDELOFF
041169,000309:
041170,000310: 17,2414 32533 CA LBCFADR
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Page 942
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041172,000312: 17,2415 55722 TS COEFFADR
041173,000313: 17,2416 02422 TC LOADCOEF
041174,000314:
041175,000315: 17,2417 31611 CAE PHASETMP # RESTORE TVCPHASE
041176,000316: 17,2420 55644 TS TVCPHASE
041177,000317:
041178,000318: 17,2421 01613 TC RTRNLOC # BACK TO PRESWTCH OR TVCRESTARTS
041179,000319:
041180,000320: 17,2422 00006 LOADCOEF EXTEND # LOAD DAP FILTER COEFFICIENTS
041181,000321: 17,2423 51722 INDEX COEFFADR # FROM: ERASABLE FOR CSM/LM HB
041182,000322: 17,2424 30001 DCA 0 # FIXED FOR CSM/LM LB
041183,000323: 17,2425 53724 DXCH N10 # FIXED FOR CSM
041184,000324:
041185,000325: 17,2426 00006 EXTEND # NOTE: FOR CSM/LM, NORMAL COEFFICIENT
041186,000326: 17,2427 51722 INDEX COEFFADR # LOAD WILL BE HIGH BANDWIDTH PAD LOAD
041187,000327: 17,2430 30003 DCA 2 # ERASABLES. DURING CSM/LM SWITCHOVER,
041188,000328: 17,2431 53726 DXCH N10 +2 # THIS LOGIC IS USED TO LOAD LOW BANDWIDTH
041189,000329: # COEFFICIENTS FROM FIXED MEMORY.
041190,000330:
041191,000331: 17,2432 00006 EXTEND
041192,000332: 17,2433 51722 INDEX COEFFADR
041193,000333: 17,2434 30005 DCA 4
041194,000334: 17,2435 53730 DXCH N10 +4
041195,000335:
041196,000336: 17,2436 00006 EXTEND
041197,000337: 17,2437 51722 INDEX COEFFADR
041198,000338: 17,2440 30007 DCA 6
041199,000339: 17,2441 53732 DXCH N10 +6
041200,000340:
041201,000341: 17,2442 00006 EXTEND
041202,000342: 17,2443 51722 INDEX COEFFADR
041203,000343: 17,2444 30011 DCA 8D
041204,000344: 17,2445 53734 DXCH N10 +8D
041205,000345:
041206,000346: 17,2446 00006 EXTEND
041207,000347: 17,2447 51722 INDEX COEFFADR
041208,000348: 17,2450 30013 DCA 10D
041209,000349: 17,2451 53736 DXCH N10 +10D
041210,000350:
041211,000351: 17,2452 00006 EXTEND
041212,000352: 17,2453 51722 INDEX COEFFADR
041213,000353: 17,2454 30015 DCA 12D
041214,000354: 17,2455 53740 DXCH N10 +12D
041215,000355:
041216,000356: 17,2456 51722 INDEX COEFFADR
041217,000357: 17,2457 30016 CA 14D
041218,000358: 17,2460 55741 TS N10 +14D
041219,000359:
041220,000360: 17,2461 00002 TC Q
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Page 943
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041222,000362: 17,2462 31470 S40.15 CAE IXX # GAIN COMPUTATIONS (1/CONACC, VARK)
041223,000363: 17,2463 00006 EXTEND # ENTERED FROM TVCINITIALIZE AND TVCEXEC
041224,000364: 17,2464 72544 MP 2PI/M # 2PI/M SCALED 1/(B+8 N M)
041225,000365: 17,2465 20001 DDOUBL # IXX SCALED B+20 KG-MSQ
041226,000366: 17,2466 20001 DDOUBL
041227,000367: 17,2467 20001 DDOUBL
041228,000368: 17,2470 55640 TS 1/CONACC # SCALED B+9 SEC-SQ/REV
041229,000369:
041230,000370: 17,2471 31636 +7 CAE KTLX/I # ENTRY FROM CSM/LM V46 SWITCH-OVER
041231,000371: 17,2472 00006 EXTEND # SCALED (B+3 ASCREV) 1/SECSQ
041232,000372: 17,2473 71472 MP IAVG/TLX # SCALED B+2 SECSQ
041233,000373: 17,2474 20001 DDOUBL
041234,000374: 17,2475 20001 DDOUBL
041235,000375: 17,2476 55641 TS VARK # SCALED (B+3 ASCREV)
041236,000376: 17,2477 00002 TC Q
041237,000377:
041238,000378: 17,2500 37777 CSMN10 DEC .99999 # N10 CSM ONLY FILTER COEFFICIENTS
041239,000379: 17,2501 67657 DEC -.2549 # N11/2
041240,000380: 17,2502 01703 DEC .0588 # N12
041241,000381: 17,2503 47472 DEC -.7620 # D11/2
041242,000382: 17,2504 27656 DEC .7450 # D12
041243,000383:
041244,000384: 17,2505 37777 DEC .99999 # N20
041245,000385: 17,2506 60361 DEC -.4852 # N21/2
041246,000386: 17,2507 00000 DEC 0 B-14 # N22
041247,000387: 17,2510 67304 DEC -.2692 # D22/2
041248,000388: 17,2511 00000 DEC 0 B-14 # D22
041249,000389:
041250,000390: 17,2512 37777 LBN10 DEC +.99999 # N10 LOW BANDWIDTH FILTER COEFFICIENTS
041251,000391: 17,2513 65371 DEC -.3285 # N11/2
041252,000392: 17,2514 65337 DEC -.3301 # N12
041253,000393: 17,2515 42700 DEC -.9101 # D11/2
041254,000394: 17,2516 33045 DEC +.8460 # D12
041255,000395:
041256,000396: 17,2517 01000 DEC +.03125 # N20
041257,000397: 17,2520 00000 DEC 0 B-14 # N21/2
041258,000398: 17,2521 00000 DEC 0 B-14 # N22
041259,000399: 17,2522 42700 DEC -.9101 # D21/2
041260,000400: 17,2523 33045 DEC +.8460 # D22
041261,000401:
041262,000402: 17,2524 20000 DEC +.50000 # N30
041263,000403: 17,2525 60730 DEC -.47115 # N31/2
041264,000404: 17,2526 17145 DEC +.4749 # N32
041265,000405: 17,2527 41323 DEC -.9558 # D31/2
041266,000406: 17,2530 35773 DEC +.9372 # D32
041267,000407:
041268,000408: 17,2531 02500 CSMCFADR GENADR CSMN10 # CSM ONLY COEFFICIENTS ADDRESS
041269,000409: 17,2532 01425 HBCFADR GENADR HBN10 # HIGH BANDWIDTH COEFFICIENTS ADDRESS
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041271,000411: 17,2533 02512 LBCFADR GENADR LBN10 # LOW BANDWIDTH COEFFICIENTS ADDRESS
041272,000412:
041273,000413: 17,2534 00063 NZERO DEC 51 B-14 # MUST BE ODD FOR MRCLEAN
041274,000414: 17,2535 00027 NZEROJR DEC 23 B-14 # MUST BE ODD FOR MCLEANJR
041275,000415:
041276,000416: 17,2536 00210 ATTLIM DEC 0.00833 # INITIAL ATTITUDE ERROR LIMIT (1.5 DEG)
041277,000417: 17,2537 00170 1/ATTLIM DEC 0.007325 # .007325(ERROR) = 0 IF ERROR < 1.5 DEG
041278,000418:
041279,000419: 17,2540 00005 TCORR OCT 00005 # CSM
041280,000420: 17,2541 00000 +1 OCT 00000 # CSM/LM (HB,LB)
041281,000421:
041282,000422: 17,2542 00247 FKPRIMDT DEC .0102 # CSM/LM (LB), (.05 X .08) SCALED AT PI/8
041283,000423: 17,2543 00232 FREPFRAC DEC .0375 B-2 # CSM/LM (LB), 0.0375 SCALED AT B+2
041284,000424:
041285,000425: 17,2544 4374 NINETEEN = VD1
041286,000426: 17,2544 33074 2PI/M DEC .00331017 B+8 # 2PI/M, SCALED AT 1/(B+8 N-M)
041287,000427:
041288,000428: 17,2545 03720 ONETHOU DEC 1000 B-13 # KG/CS B3 TO KG/10SEC B16 CONVERSION
041289,000429:
041290,000430: 17,2546 E6,1702 EBANK= BZERO
041291,000431: 17,2546 03107 40066 DAPINIT5 2CADR DAPINIT
041292,000432:
041293,000433: 17,2550 E6,1702 EBANK= BZERO
041294,000434: 17,2550 02175 36066 INITLOC2 2CADR TVCINIT1
End of include-file TVCINITIALIZE.agc. Parent file is MAIN.agc