Source Code
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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! |
015329,000002: ## Copyright: Public domain.
015330,000003: ## Filename: IMU_PERFORMANCE_TEST_2.agc
015331,000004: ## Purpose: Part of the source code for Luminary 1A build 099.
015332,000005: ## It is part of the source code for the Lunar Module's (LM)
015333,000006: ## Apollo Guidance Computer (AGC), for Apollo 11.
015334,000007: ## Assembler: yaYUL
015335,000008: ## Contact: Ron Burkey <info@sandroid.org>.
015336,000009: ## Website: www.ibiblio.org/apollo.
015337,000010: ## Pages: 373-381
015338,000011: ## Mod history: 2009-05-17 RSB Adapted from the corresponding
015339,000012: ## Luminary131 file, using page
015340,000013: ## images from Luminary 1A.
015341,000014: ## 2011-01-06 JL Fixed pseudo-label indentation.
015342,000015: ## 2016-12-14 RSB Proofed text comments with octopus/ProoferComments
015343,000016: ## and corrected the errors found.
015344,000017: ## 2017-03-03 RSB Snapshot of Luminary 99 Rev 1.
015345,000018:
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Page 373 |
015347,000020: # NAME - IMU PERFORMANCE TESTS 2
015348,000021:
015349,000022: # DATE - MARCH 20, 1967
015350,000023:
015351,000024: # BY - SYSTEM TEST GROUP 864-6900 EXT. 1274
015352,000025:
015353,000026: # MODNO. - ZERO
015354,000027:
015355,000028: # FUNCTIONAL DESCRIPTION
015356,000029:
015357,000030: # POSITIONING ROUTINES FOR THE IMU PERFORMANCE TESTS AS WELL AS SOME OF
015358,000031: # THE TESTS THEMSELVES. FOR A DESCRIPTION OF THESE SUBROUTINES AND THE
015359,000032: # OPERATING PROCEDURES (TYPICALLY) SEE STG MEMO 685. THEORETICAL REF. E-1973
015360,000033:
015361,000034: 33,2045 BANK 33
015362,000035: 37,2000 SETLOC IMU2
015363,000036: 37,2000 BANK
015364,000037: 37,2002 E5,1416 EBANK= POSITON
015365,000038: 37,2002 COUNT* $$/P07
015366,000039:
015367,000040: 37,2002 05311 REDO TC NEWMODEX
015368,000041: 37,2003 00007 MM 07 B-14
015369,000042:
015370,000043: 37,2004 02325 GEOIMUTT TC IMUZERR
015371,000044: 37,2005 34755 IMUBACK CA ZERO
015372,000045: 37,2006 55414 TS NDXCTR
015373,000046: 37,2007 55440 TS TORQNDX
015374,000047: 37,2010 55441 TS TORQNDX +1
015375,000048: 37,2011 55576 TS OVFLOWCK
015376,000049: 37,2012 34361 NBPOSPL CA DEC17
015377,000050: 37,2013 55571 TS ZERONDX
015378,000051: 37,2014 32476 CA XNBADR
015379,000052: 37,2015 02367 TC ZEROING
015380,000053: 37,2016 34736 CA HALF
015381,000054: 37,2017 55664 TS XNB
015382,000055: 37,2020 06037 GUESS TC INTPRET
015383,000056: 37,2021 62545 LATAZCHK DLOAD SL2
015384,000057: 37,2022 02403 LATITUDE
015385,000058: 37,2023 15047 STODL DSPTEM1 +1
015386,000059: 37,2024 02401 AZIMUTH
015387,000060: 37,2025 77434 RTB EXIT
015388,000061: 37,2026 21614 1STO2S
015389,000062: 37,2027 56154 XCH MPAC
015390,000063: 37,2030 55045 TS DSPTEM1
015391,000064: 37,2031 32473 CAF VN0641
015392,000065: 37,2032 04616 TC BANKCALL
015393,000066: 37,2033 20476 CADR GOFLASH
015394,000067: 37,2034 02270 TC ENDTEST1
015395,000068: 37,2035 02037 TC +2
015396,000069: 37,2036 02031 TC -5
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Page 374 |
015398,000071: 37,2037 06037 TC INTPRET
015399,000072: 37,2040 47135 SLOAD RTB
015400,000073: 37,2041 01046 DSPTEM1
015401,000074: 37,2042 21576 CDULOGIC
015402,000075: 37,2043 02401 STORE AZIMUTH
015403,000076: 37,2044 60535 SLOAD SR2
015404,000077: 37,2045 01047 DSPTEM1 +1
015405,000078: 37,2046 02403 STORE LATITUDE
015406,000079: 37,2047 57546 COS DCOMP
015407,000080: 37,2050 77752 SL1
015408,000081: 37,2051 16437 STODL WANGI
015409,000082: 37,2052 02403 LATITUDE
015410,000083: 37,2053 72556 SIN SL1
015411,000084: 37,2054 16435 STODL WANGO
015412,000085: 37,2055 02401 AZIMUTH
015413,000086: 37,2056 73406 PUSH SIN
015414,000087: 37,2057 02675 STORE YNB +2
015415,000088: 37,2060 16705 STODL ZNB +4
015416,000089: 37,2061 77746 COS
015417,000090: 37,2062 02677 STORE YNB +4
015418,000091: 37,2063 77676 DCOMP
015419,000092: 37,2064 36703 POSGMBL STCALL ZNB +2
015420,000093: 37,2065 47353 CALCGA
015421,000094: 37,2066 77776 EXIT
015422,000095: 37,2067 04616 TC BANKCALL
015423,000096: 37,2070 17000 CADR IMUCOARS
015424,000097: 37,2071 34736 CAF BIT14 # IF BIT14 SET, GIMBAL LOCK
015425,000098: 37,2072 70077 MASK FLAGWRD3
015426,000099: 37,2073 00006 EXTEND
015427,000100: 37,2074 12076 BZF +2
015428,000101: 37,2075 25414 INCR NDXCTR # +1 IF IN GIMBAL LOCK, OTHERWISE 0
015429,000102: 37,2076 05516 TC DOWNFLAG
015430,000103: 37,2077 00056 ADRES GLOKFAIL # RESET GIMBAL LOCK FLAG
015431,000104: 37,2100 02315 TC IMUSLLLG
015432,000105: 37,2101 11414 CCS NDXCTR # IF ONE GO AND DO A PIPA TEST ONLY
015433,000106: 37,2102 02126 TC PIPACHK # ALIGN AND MEASURE VERTICAL PIPA RATE
015434,000107: 37,2103 02320 TC FINIMUDD
015435,000108: 37,2104 00006 EXTEND
015436,000109: 37,2105 31575 DCA PERFDLAY
015437,000110: 37,2106 05277 TC LONGCALL # DELAY WHILE SUSPENSION STABILIZES
015438,000111: 37,2107 E5,1416 EBANK= POSITON
015439,000112: 37,2107 02113 76065 2CADR GOESTIMS
015440,000113:
015441,000114: 37,2111 32116 CA ESTICADR
015442,000115: 37,2112 05133 TC JOBSLEEP
015443,000116: 37,2113 32116 GOESTIMS CA ESTICADR
015444,000117: 37,2114 05137 TC JOBWAKE
015445,000118: 37,2115 05261 TC TASKOVER
015446,000119: 37,2116 76500 ESTICADR CADR ESTIMS
015447,000120: 37,2117 34755 TORQUE CA ZERO
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015449,000122: 37,2120 55050 TS DSPTEM2
015450,000123: 37,2121 31504 CA DRIFTI
015451,000124: 37,2122 55051 TS DSPTEM2 +1
015452,000125: 37,2123 51416 INDEX POSITON
015453,000126: 37,2124 55420 TS SOUTHDR -1
015454,000127: 37,2125 02457 TC SHOW
015455,000128:
015456,000129: 37,2126 51414 PIPACHK INDEX NDXCTR # PIPA TEST
015457,000130: 37,2127 02130 TC +1
015458,000131: 37,2130 02447 TC EARTHR*
015459,000132: 37,2131 34361 CA DEC17 # ALLOW PIP COUNTER TO OVERFLOW 17 TIMES
015460,000133: 37,2132 55476 TS DATAPL +4 # IN THE ALLOTED TIME INTERVAL
015461,000134: 37,2133 32474 CA DEC58
015462,000135: 37,2134 55412 TS LENGTHOT
015463,000136: 37,2135 34753 CA ONE
015464,000137: 37,2136 55537 TS RESULTCT
015465,000138: 37,2137 34755 CA ZERO
015466,000139: 37,2140 51415 INDEX PIPINDEX
015467,000140: 37,2141 54037 TS PIPAX
015468,000141: 37,2142 55472 TS DATAPL
015469,000142: 37,2143 02332 TC CHECKG
015470,000143: 37,2144 00004 INHINT
015471,000144: 37,2145 34752 CAF TWO
015472,000145: 37,2146 05173 TC TWIDDLE
015473,000146: 37,2147 E5,1642 EBANK= XSM
015474,000147: 37,2147 02151 ADRES PIPATASK
015475,000148: 37,2150 05155 TC ENDOFJOB
015476,000149:
015477,000150: 37,2151 00006 PIPATASK EXTEND
015478,000151: 37,2152 27412 DIM LENGTHOT
015479,000152: 37,2153 31412 CA LENGTHOT
015480,000153: 37,2154 00006 EXTEND
015481,000154: 37,2155 62161 BZMF STARTPIP
015482,000155: 37,2156 34742 CAF BIT10
015483,000156: 37,2157 05173 TC TWIDDLE
015484,000157: 37,2160 E5,1642 EBANK= XSM
015485,000158: 37,2160 02151 ADRES PIPATASK
015486,000159: 37,2161 34736 STARTPIP CAF PRIO20
015487,000160: 37,2162 05105 TC FINDVAC
015488,000161: 37,2163 E5,1642 EBANK= XSM
015489,000162: 37,2163 02166 76065 2CADR PIPJOBB
015490,000163:
015491,000164: 37,2165 05261 TC TASKOVER
015492,000165:
015493,000166: 37,2166 51414 PIPJOBB INDEX NDXCTR
015494,000167: 37,2167 02170 TC +1
015495,000168: 37,2170 02447 TC EARTHR*
015496,000169: 37,2171 31412 CA LENGTHOT
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015498,000171: 37,2172 00006 EXTEND
015499,000172: 37,2173 62175 BZMF +2
015500,000173: 37,2174 05155 TC ENDOFJOB
015501,000174:
015502,000175: 37,2175 34756 CA FIVE
015503,000176: 37,2176 55537 TS RESULTCT
015504,000177: 37,2177 02332 TC CHECKG
015505,000178: 37,2200 11473 CCS DATAPL +1
015506,000179: 37,2201 02205 TC +4
015507,000180: 37,2202 05705 TC CCSHOLE
015508,000181: 37,2203 41476 CS DATAPL +4
015509,000182: 37,2204 55476 TS DATAPL +4
015510,000183: 37,2205 00006 EXTEND
015511,000184: 37,2206 41473 DCS DATAPL
015512,000185: 37,2207 21477 DAS DATAPL +4
015513,000186:
015514,000187: 37,2210 06037 TC INTPRET
015515,000188: 37,2211 45345 DLOAD DSU
015516,000189: 37,2212 02501 DATAPL +6
015517,000190: 37,2213 02475 DATAPL +2
015518,000191: 37,2214 45044 BPL CALL
015519,000192: 37,2215 76217 AINGOTN
015520,000193: 37,2216 76275 OVERFFIX
015521,000194: 37,2217 56325 AINGOTN PDDL DDV
015522,000195: 37,2220 02477 DATAPL +4
015523,000196: 37,2221 47075 DMPR RTB
015524,000197: 37,2222 37056 DEC585 # DEC585 HAS BEEN REDEFINED FOR LEM
015525,000198: 37,2223 21612 SGNAGREE
015526,000199: 37,2224 01051 STORE DSPTEM2
015527,000200: 37,2225 77776 EXIT
015528,000201: 37,2226 11414 CCS NDXCTR
015529,000202: 37,2227 02301 TC COAALIGN # TAKE PLATFORM OUT OF GIMBAL LOCK
015530,000203: 37,2230 02457 TC SHOW
015531,000204: 37,2231 32471 VERTDRFT CA 3990DEC # ABOUT 1 HOUR VERTICAL DRIFT TEST
015532,000205: 37,2232 55412 TS LENGTHOT
015533,000206: 37,2233 51416 INDEX POSITON
015534,000207: 37,2234 41417 CS SOUTHDR -2
015535,000208: 37,2235 55442 TS DRIFTT
015536,000209: 37,2236 11415 CCS PIPINDEX # OFFSET PLATFORM TO MISS PIP DEAD-ZONES
015537,000210: 37,2237 12245 TCF PON4 # Z UP IN POS 4
015538,000211: 37,2240 44747 PON2 CS BIT5 # X UP
015539,000212: 37,2241 27565 ADS ERCOMP +2
015540,000213: 37,2242 34747 CA BIT5
015541,000214: 37,2243 27567 ADS ERCOMP +4
015542,000215: 37,2244 12251 TCF PON
015543,000216: 37,2245 44747 PON4 CS BIT5
015544,000217: 37,2246 27565 ADS ERCOMP +2
015545,000218: 37,2247 34747 CA BIT5
015546,000219: 37,2250 27563 ADS ERCOMP
015547,000220: 37,2251 02447 PON TC EARTHR*
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015549,000222: 37,2252 34755 CA ZERO # ALLOW ONLY SOUTH GYRO EARTH RATE COMPENS
015550,000223: 37,2253 55404 TS ERVECTOR
015551,000224: 37,2254 55405 TS ERVECTOR +1
015552,000225: 37,2255 34733 GUESS1 CAF POSMAX
015553,000226: 37,2256 55440 TS TORQNDX
015554,000227: 37,2257 55441 TS TORQNDX +1
015555,000228: 37,2260 30032 CA CDUX
015556,000229: 37,2261 55413 TS LOSVEC
015557,000230: 37,2262 02500 TC ESTIMS
015558,000231: 37,2263 31502 VALMIS CA DRIFTO
015559,000232: 37,2264 55051 TS DSPTEM2 +1
015560,000233: 37,2265 34755 CA ZERO
015561,000234: 37,2266 55050 TS DSPTEM2
015562,000235: 37,2267 02457 TC SHOW
015563,000236:
015564,000237: 37,2270 05516 ENDTEST1 TC DOWNFLAG
015565,000238: 37,2271 00007 ADRES IMUSE
015566,000239: 37,2272 44755 CS ZERO
015567,000240: 37,2273 05314 TC NEWMODEA
015568,000241: 37,2274 05472 TC ENDEXT
015569,000242:
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Page 378 |
015571,000244: 37,2275 43215 OVERFFIX DAD DAD
015572,000245: 37,2276 06530 DPPOSMAX
015573,000246: 37,2277 37064 ONEDPP
015574,000247: 37,2300 77616 RVQ
015575,000248:
015576,000249: 37,2301 00006 COAALIGN EXTEND # COARSE ALIGN SUBROUTINE
015577,000250: 37,2302 23571 QXCH ZERONDX
015578,000251: 37,2303 34755 CA ZERO
015579,000252: 37,2304 54321 TS THETAD
015580,000253: 37,2305 54322 TS THETAD +1
015581,000254: 37,2306 54323 TS THETAD +2
015582,000255: 37,2307 04616 TC BANKCALL
015583,000256: 37,2310 17000 CADR IMUCOARS
015584,000257: 37,2311 04616 ALIGNCOA TC BANKCALL
015585,000258: 37,2312 17716 CADR IMUSTALL
015586,000259: 37,2313 03047 TC SOMERR2
015587,000260: 37,2314 01571 TC ZERONDX
015588,000261:
015589,000262: 37,2315 00006 IMUSLLLG EXTEND
015590,000263: 37,2316 23571 QXCH ZERONDX
015591,000264: 37,2317 02311 TC ALIGNCOA
015592,000265:
015593,000266: 37,2320 00006 FINIMUDD EXTEND
015594,000267: 37,2321 23571 QXCH ZERONDX
015595,000268: 37,2322 04616 TC BANKCALL
015596,000269: 37,2323 17210 CADR IMUFINE
015597,000270: 37,2324 02311 TC ALIGNCOA
015598,000271:
015599,000272: 37,2325 00006 IMUZERR EXTEND
015600,000273: 37,2326 23571 QXCH ZERONDX
015601,000274: 37,2327 04616 TC BANKCALL
015602,000275: 37,2330 16714 CADR IMUZERO
015603,000276: 37,2331 02311 TC ALIGNCOA
015604,000277:
015605,000278: 37,2332 00006 CHECKG EXTEND # PIP PULSE CATCHING ROUTINE
015606,000279: 37,2333 23417 QXCH QPLACE
015607,000280: 37,2334 02342 TC +6
015608,000281: 37,2335 00003 CHECKG1 RELINT
015609,000282: 37,2336 30067 CA NEWJOB
015610,000283: 37,2337 00006 EXTEND
015611,000284: 37,2340 62346 BZMF +6
015612,000285: 37,2341 05122 TC CHANG1
015613,000286: 37,2342 00004 INHINT
015614,000287: 37,2343 51415 INDEX PIPINDEX
015615,000288: 37,2344 40037 CS PIPAX
015616,000289: 37,2345 55571 TS ZERONDX
015617,000290: 37,2346 00004 INHINT
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Page 379 |
015619,000292: 37,2347 51415 INDEX PIPINDEX
015620,000293: 37,2350 30037 CA PIPAX
015621,000294: 37,2351 61571 AD ZERONDX
015622,000295: 37,2352 00006 EXTEND
015623,000296: 37,2353 12335 BZF CHECKG1
015624,000297: 37,2354 51415 INDEX PIPINDEX
015625,000298: 37,2355 30037 CA PIPAX
015626,000299: 37,2356 51537 INDEX RESULTCT
015627,000300: 37,2357 55472 TS DATAPL
015628,000301: 37,2360 04102 TC FINETIME
015629,000302: 37,2361 51537 INDEX RESULTCT
015630,000303: 37,2362 55473 TS DATAPL +1
015631,000304: 37,2363 51537 INDEX RESULTCT
015632,000305: 37,2364 23474 LXCH DATAPL +2
015633,000306: 37,2365 00003 RELINT
015634,000307: 37,2366 01417 ENDCHKG TC QPLACE
015635,000308:
015636,000309: 37,2367 54001 ZEROING TS L
015637,000310: 37,2370 12372 TCF +2
015638,000311: 37,2371 55571 ZEROING1 TS ZERONDX
015639,000312: 37,2372 34755 CAF ZERO
015640,000313: 37,2373 50001 INDEX L
015641,000314: 37,2374 54000 TS 0
015642,000315: 37,2375 24001 INCR L
015643,000316: 37,2376 11571 CCS ZERONDX
015644,000317: 37,2377 12371 TCF ZEROING1
015645,000318: 37,2400 00002 TC Q
015646,000319:
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Page 380 |
015648,000321: 37,2401 65345 ERTHRVSE DLOAD PDDL
015649,000322: 37,2402 37057 SCHZEROS # PD24 = (SIN -COS 0)(OMEG/MS)
015650,000323: 37,2403 02403 LATITUDE
015651,000324: 37,2404 57546 COS DCOMP
015652,000325: 37,2405 73525 PDDL SIN
015653,000326: 37,2406 02403 LATITUDE
015654,000327: 37,2407 74266 VDEF VXSC
015655,000328: 37,2410 36001 OMEG/MS
015656,000329: 37,2411 02405 STORE ERVECTOR
015657,000330: 37,2412 77634 RTB
015658,000331: 37,2413 21573 LOADTIME
015659,000332: 37,2414 26433 STOVL TMARK
015660,000333: 37,2415 37057 SCHZEROS
015661,000334: 37,2416 02564 STORE ERCOMP
015662,000335: 37,2417 77616 RVQ
015663,000336:
015664,000337: 37,2420 47020 EARTHR ITA RTB
015665,000338: 37,2421 00051 S2
015666,000339: 37,2422 21573 LOADTIME
015667,000340: 37,2423 02431 STORE TEMPTIME
015668,000341: 37,2424 51025 DSU BPL
015669,000342: 37,2425 02433 TMARK
015670,000343: 37,2426 76431 ERTHR
015671,000344: 37,2427 77624 CALL
015672,000345: 37,2430 76275 OVERFFIX
015673,000346: 37,2431 74261 ERTHR SL VXSC
015674,000347: 37,2432 20212 9D
015675,000348: 37,2433 02405 ERVECTOR
015676,000349: 37,2434 53321 MXV VAD
015677,000350: 37,2435 02643 XSM
015678,000351: 37,2436 02564 ERCOMP
015679,000352: 37,2437 16564 STODL ERCOMP
015680,000353: 37,2440 02431 TEMPTIME
015681,000354: 37,2441 02433 STORE TMARK
015682,000355: 37,2442 47170 AXT,1 RTB
015683,000356: 37,2443 02563 ECADR ERCOMP
015684,000357: 37,2444 21705 PULSEIMU
015685,000358: 37,2445 77650 GOTO
015686,000359: 37,2446 00051 S2
015687,000360:
015688,000361: 37,2447 00006 EARTHR* EXTEND
015689,000362: 37,2450 23420 QXCH QPLACES
015690,000363: 37,2451 06037 TC INTPRET
015691,000364: 37,2452 77624 CALL
015692,000365: 37,2453 76420 EARTHR
015693,000366: 37,2454 77776 EXIT
015694,000367: 37,2455 02315 TC IMUSLLLG
015695,000368: 37,2456 01420 TC QPLACES
015696,000369:
015697,000370: 37,2457 00006 SHOW EXTEND
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015699,000372: 37,2460 23417 QXCH QPLACE
015700,000373: 37,2461 31416 SHOW1 CA POSITON
015701,000374: 37,2462 55052 TS DSPTEM2 +2
015702,000375: 37,2463 32472 CA VB06N98
015703,000376: 37,2464 04616 TC BANKCALL
015704,000377: 37,2465 20476 CADR GOFLASH
015705,000378: 37,2466 02270 TC ENDTEST1 # V34
015706,000379: 37,2467 01417 TC QPLACE # V33
015707,000380: 37,2470 12461 TCF SHOW1
015708,000381:
015709,000382: 37,2471 07626 3990DEC DEC 3990 B-14
015710,000383: 37,2472 01542 VB06N98 VN 0698
015711,000384: 37,2473 01451 VN0641 VN 0641
015712,000385: 37,2474 4361 DEC17 = ND1
015713,000386: 37,2474 00072 DEC58 DEC 58 B-14
015714,000387: 37,2475 02737 OGCPL ECADR OGC
015715,000388: 37,2476 4777 1SECX = 1SEC
015716,000389: 37,2476 01664 XNBADR GENADR XNB
015717,000390: 37,2477 01642 XSMADR GENADR XSM
015718,000391: 4102 BLOCK 2
015719,000392: 4102 COUNT* $$/P07
015720,000393: 4102 00004 FINETIME INHINT # RETURNS WITH INTERRUPT INHIBITED
015721,000394: 4103 00006 EXTEND
015722,000395: 4104 00004 READ LOSCALAR
015723,000396: 4105 54001 TS L
015724,000397: 4106 00006 EXTEND
015725,000398: 4107 06004 RXOR LOSCALAR
015726,000399: 4110 00006 EXTEND
015727,000400: 4111 14115 BZF +4
015728,000401: 4112 00006 EXTEND
015729,000402: 4113 00004 READ LOSCALAR
015730,000403: 4114 54001 TS L
015731,000404: 4115 44733 +4 CS POSMAX
015732,000405: 4116 60001 AD L
015733,000406: 4117 00006 EXTEND
015734,000407: 4120 14103 BZF FINETIME +1
015735,000408: 4121 00006 EXTEND
015736,000409: 4122 00003 READ HISCALAR
015737,000410: 4123 00002 TC Q
015738,000411:
End of include-file IMU_PERFORMANCE_TESTS_2.agc. Parent file is MAIN.agc