Source Code
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These source-code files are part of a reconstructed copy of LM131 revision 1,
the final release of the Apollo 13 Lunar Module (LM) Apollo Guidance Computer
(AGC) software.
The source reconstruction began with source code of Luminary 131 previously
transcribed from a digitized copy of that program. A dump of the flight spare
core rope memory module B5, part number 2010802-171, serial number RAY 411,
was obtained. This module is the only module different between Luminary 131
and LM131 revision 1. The dump was disassembled and all changes were incorporated
into these source files. Note that page numbers in the reconstructed code match
those on the Luminary 131 printout, although the changed code would likely have
changed page numbers for a real LM131 revision 1 listing.
Comments from 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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054833,000002: ## Copyright: Public domain.
054834,000003: ## Filename: IMU_MODE_SWITCHING_ROUTINES.agc
054835,000004: ## Purpose: A section of LM131 revision 1.
054836,000005: ## It is part of the reconstructed source code for the final
054837,000006: ## release of the flight software for the Lunar Module's (LM)
054838,000007: ## Apollo Guidance Computer (AGC) for Apollo 13. The code has
054839,000008: ## been reconstructed from a listing of Luminary 131 and a dump
054840,000009: ## of a core rope memory module B5, part number 2010802-171,
054841,000010: ## which is the only module different between LM131 revision 1
054842,000011: ## and Luminary 131. The executable generated from this source
054843,000012: ## has been verified against the module dump, so while the names,
054844,000013: ## comments, and ordering may not be exactly correct, the
054845,000014: ## resulting binary is.
054846,000015: ## Reference: pp. 1301-1329
054847,000016: ## Assembler: yaYUL
054848,000017: ## Contact: Ron Burkey <info@sandroid.org>.
054849,000018: ## Website: www.ibiblio.org/apollo/index.html
054850,000019: ## Mod history: 2022-10-28 MAS Created from Luminary 131.
054851,000020:
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Page 1301
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054853,000022: 5457 BLOCK 02
054854,000023: 4000 SETLOC FFTAG3
054855,000024: 4000 BANK
054856,000025:
054857,000026: 5457 E3,1471 EBANK= COMMAND
054858,000027:
054859,000028: # FIXED-FIXED ROUTINES.
054860,000029:
054861,000030: 5457 COUNT* $$/IMODE
054862,000031: 5457 34755 ZEROICDU CAF ZERO # ZERO ICDU COUNTERS.
054863,000032: 5460 54032 TS CDUX
054864,000033: 5461 54033 TS CDUY
054865,000034: 5462 54034 TS CDUZ
054866,000035: 5463 00002 TC Q
054867,000036:
054868,000037: 5464 4743 SPSCODE = BIT9
054869,000038:
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Page 1302
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054871,000040: # IMU ZEROING ROUTINE.
054872,000041:
054873,000042: 11,3774 BANK 11
054874,000043: 07,2000 SETLOC MODESW
054875,000044: 07,2000 BANK
054876,000045:
054877,000046: 07,2705 COUNT* $$/IMODE
054878,000047: 07,2705 00004 IMUZERO INHINT # ROUTINE TO ZERO ICDUS.
054879,000048: 07,2706 41035 CS DSPTAB +11D # DONT ZERO CDUS IF IMU IN GIMBAL LOCK AND
054880,000049: 07,2707 74771 MASK BITS4&6 # COARSE ALIGN (GIMBAL RUNAWAY PROTECTION)
054881,000050: 07,2710 10000 CCS A
054882,000051: 07,2711 12715 TCF IMUZEROA
054883,000052:
054884,000053: 07,2712 05567 TC ALARM # IF SO.
054885,000054: 07,2713 00206 OCT 00206
054886,000055:
054887,000056: 07,2714 13650 TCF CAGETSTJ +4 # IMMEDIATE FAILURE.
054888,000057:
054889,000058: 07,2715 03644 IMUZEROA TC CAGETSTJ
054890,000059: # DELETE
054891,000060: 07,2716 41300 CS IMODES33 # DISABLE DAP AUTO AND HOLD MODES
054892,000061: 07,2717 74773 MASK SUPER011 # BIT5 FOR GROUND
054893,000062: 07,2720 27300 ADS IMODES33
054894,000063:
054895,000064: 07,2721 41277 CS IMODES30 # INHIBIT ICDUFAIL AND IMUFAIL (IN CASE WE
054896,000065: 07,2722 75741 MASK BITS3&4 # JUST CAME OUT OF COARSE ALIGN).
054897,000066: 07,2723 27277 ADS IMODES30
054898,000067:
054899,000068: 07,2724 44771 CS BITS4&6 # SEND ZERO ENCODE WITH COARSE AND ERROR
054900,000069: 07,2725 00006 EXTEND # COUNTER DISABLED.
054901,000070: 07,2726 03012 WAND CHAN12
054902,000071:
054903,000072: 07,2727 03257 TC NOATTOFF # TURN OFF NO ATT LAMP.
054904,000073:
054905,000074: 07,2730 34747 CAF BIT5
054906,000075: 07,2731 00006 EXTEND
054907,000076: 07,2732 05012 WOR CHAN12
054908,000077:
054909,000078: 07,2733 05457 TC ZEROICDU
054910,000079: 07,2734 34746 CAF BIT6 # WAIT 320 MS TO GIVE AGS ADEQUATE TIME TO
054911,000080: 07,2735 05203 TC WAITLIST # RECEIVE ITS PULSE TRAIN.
054912,000081: 07,2736 E3,1474 EBANK= CDUIND
054913,000082: 07,2736 02750 16103 2CADR IMUZERO2
054914,000083:
054915,000084: 07,2740 41277 CS IMODES30 # SEE IF IMU OPERATING AND ALARM IF NOT.
054916,000085: 07,2741 74743 MASK BIT9
054917,000086: 07,2742 10000 CCS A
054918,000087: 07,2743 12746 TCF MODEEXIT
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Page 1303
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054920,000089: 07,2744 05567 TC ALARM
054921,000090: 07,2745 00210 OCT 210
054922,000091:
054923,000092: 07,2746 00003 MODEEXIT RELINT # GENERAL MODE-SWITCHING EXIT.
054924,000093: 07,2747 14631 TCF SWRETURN
054925,000094:
054926,000095: 07,2750 03632 IMUZERO2 TC CAGETEST
054927,000096: 07,2751 05457 TC ZEROICDU # ZERO CDUX, CDUY, CDUZ
054928,000097:
054929,000098: 07,2752 44747 CS BIT5 # REMOVE ZERO DISCRETE.
054930,000099: 07,2753 00006 EXTEND
054931,000100: 07,2754 03012 WAND CHAN12
054932,000101:
054933,000102: 07,2755 34741 CAF BIT11 # WAIT 10 SECS FOR CTRS TO FIND GIMBALS
054934,000103: 07,2756 05224 TC VARDELAY
054935,000104:
054936,000105: 07,2757 03632 IMUZERO3 TC CAGETEST
054937,000106: 07,2760 45741 CS BITS3&4 # REMOVE IMUFAIL AND ICDUFAIL INHIBIT.
054938,000107: 07,2761 71277 MASK IMODES30
054939,000108: 07,2762 55277 TS IMODES30
054940,000109:
054941,000110: 07,2763 44773 CS SUPER011 # ENABLE DAP AUTO AND HOLD MODES
054942,000111: 07,2764 71300 MASK IMODES33 # BIT5 FOR GROUND
054943,000112: 07,2765 55300 TS IMODES33
054944,000113:
054945,000114: 07,2766 04674 TC IBNKCALL # SET ISS WARNING IF EITHER OF ABOVE ARE
054946,000115: 07,2767 14703 CADR SETISSW # PRESENT.
054947,000116:
054948,000117: 07,2770 13622 TCF ENDIMU
054949,000118:
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Page 1304
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054951,000120: # IMU COARSE ALIGN MODE.
054952,000121:
054953,000122: 07,2771 00004 IMUCOARS INHINT
054954,000123: 07,2772 03644 TC CAGETSTJ
054955,000124: 07,2773 03135 TC SETCOARS
054956,000125:
054957,000126: 07,2774 36245 CAF SIX
054958,000127: 07,2775 05203 TC WAITLIST
054959,000128: 07,2776 E3,1474 EBANK= CDUIND
054960,000129: 07,2776 03001 16103 2CADR COARS
054961,000130:
054962,000131: 07,3000 12746 TCF MODEEXIT
054963,000132:
054964,000133: 07,3001 03632 COARS TC CAGETEST
054965,000134: 07,3002 34746 CAF BIT6 # ENABLE ALL THREE ISS CDU ERROR COUNTERS
054966,000135: 07,3003 00006 EXTEND
054967,000136: 07,3004 05012 WOR CHAN12
054968,000137:
054969,000138: 07,3005 34752 CAF TWO # SET CDU INDICATOR
054970,000139: 07,3006 55474 COARS1 TS CDUIND
054971,000140:
054972,000141: 07,3007 51474 INDEX CDUIND # COMPUTE THETAD - THETAA IN 1:S
054973,000142: 07,3010 30321 CA THETAD # COMPLEMENT FORM
054974,000143: 07,3011 00006 EXTEND
054975,000144: 07,3012 51474 INDEX CDUIND
054976,000145: 07,3013 20032 MSU CDUX
054977,000146: 07,3014 00006 EXTEND
054978,000147: 07,3015 74737 MP BIT13 # SHIFT RIGHT 2
054979,000148: 07,3016 56001 XCH L # ROUND
054980,000149: 07,3017 60000 DOUBLE
054981,000150: 07,3020 54061 TS ITEMP1
054982,000151: 07,3021 13023 TCF +2
054983,000152: 07,3022 26001 ADS L
054984,000153:
054985,000154: 07,3023 51474 INDEX CDUIND # DIFFERENCE TO BE COMPUTED
054986,000155: 07,3024 23471 LXCH COMMAND
054987,000156: 07,3025 11474 CCS CDUIND
054988,000157: 07,3026 03006 TC COARS1
054989,000158:
054990,000159: 07,3027 34752 CAF TWO # MINIMUM OF 4 MS WAIT
054991,000160: 07,3030 05224 TC VARDELAY
054992,000161:
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Page 1305
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054994,000163: 07,3031 03632 COARS2 TC CAGETEST # DONT CONTINUE IF CAGED.
054995,000164: 07,3032 54061 TS ITEMP1 # SETS TO +0.
054996,000165: 07,3033 34752 CAF TWO # SET CDU INDICATOR
054997,000166: 07,3034 55474 +3 TS CDUIND
054998,000167:
054999,000168: 07,3035 51474 INDEX CDUIND
055000,000169: 07,3036 11471 CCS COMMAND # NUMBER OF PULSES REQUIRED
055001,000170: 07,3037 03043 TC COMPOS # GREATER THAN MAX ALLOWED
055002,000171: 07,3040 03052 TC NEXTCDU +1
055003,000172: 07,3041 03110 TC COMNEG
055004,000173: 07,3042 03052 TC NEXTCDU +1
055005,000174:
055006,000175: 07,3043 63736 COMPOS AD -COMMAX # COMMAX = MAX NUMBER OF PULSES ALLOWED
055007,000176: 07,3044 00006 EXTEND # MINUS ONE
055008,000177: 07,3045 63120 BZMF COMZERO
055009,000178: 07,3046 51474 INDEX CDUIND
055010,000179: 07,3047 55471 TS COMMAND # REDUCE COMMAND BY MAX NUMBER OF PULSES
055011,000180: 07,3050 43737 CS -COMMAX- # ALLOWED
055012,000181:
055013,000182: 07,3051 24061 NEXTCDU INCR ITEMP1
055014,000183: 07,3052 64754 AD NEG0
055015,000184: 07,3053 51474 INDEX CDUIND
055016,000185: 07,3054 54050 TS CDUXCMD # SET UP COMMAND REGISTER.
055017,000186:
055018,000187: 07,3055 11474 CCS CDUIND
055019,000188: 07,3056 03034 TC COARS2 +3
055020,000189:
055021,000190: 07,3057 10061 CCS ITEMP1 # SEE IF ANY PULSES TO GO OUT.
055022,000191: 07,3060 13124 TCF SENDPULS
055023,000192:
055024,000193: 07,3061 05221 TC FIXDELAY # WAIT FOR GIMBALS TO SETTLE.
055025,000194: 07,3062 00226 DEC 150 B-14
055026,000195:
055027,000196: 07,3063 34752 CAF TWO # AT END OF COMMAND, CHECK TO SEE THAT
055028,000197: 07,3064 54061 CHKCORS TS ITEMP1 # GIMBALS ARE WITHIN 2 DEGREES OF THETAD.
055029,000198: 07,3065 50000 INDEX A
055030,000199: 07,3066 30032 CA CDUX
055031,000200: 07,3067 00006 EXTEND
055032,000201: 07,3070 50061 INDEX ITEMP1
055033,000202: 07,3071 20321 MSU THETAD
055034,000203: 07,3072 10000 CCS A
055035,000204: 07,3073 13101 TCF COARSERR
055036,000205: 07,3074 13076 TCF CORSCHK2
055037,000206: 07,3075 13101 TCF COARSERR
055038,000207:
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Page 1306
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055040,000209: 07,3076 10061 CORSCHK2 CCS ITEMP1
055041,000210: 07,3077 13064 TCF CHKCORS
055042,000211: 07,3100 13622 TCF ENDIMU # END OF COARSE ALIGNMENT.
055043,000212:
055044,000213: 07,3101 63107 COARSERR AD COARSTOL # 2 DEGREES.
055045,000214: 07,3102 00006 EXTEND
055046,000215: 07,3103 63076 BZMF CORSCHK2
055047,000216:
055048,000217: 07,3104 05567 TC ALARM # COARSE ALIGN ERROR.
055049,000218: 07,3105 00211 OCT 211
055050,000219:
055051,000220: 07,3106 13630 TCF IMUBAD
055052,000221:
055053,000222: 07,3107 77511 COARSTOL DEC -.01111 # 2 DEGREES SCALED AT HALF-REVOLUTIONS
055054,000223:
055055,000224: 07,3110 63736 COMNEG AD -COMMAX
055056,000225: 07,3111 00006 EXTEND
055057,000226: 07,3112 63120 BZMF COMZERO
055058,000227: 07,3113 40000 COM
055059,000228: 07,3114 51474 INDEX CDUIND
055060,000229: 07,3115 55471 TS COMMAND
055061,000230: 07,3116 33737 CA -COMMAX-
055062,000231: 07,3117 03051 TC NEXTCDU
055063,000232:
055064,000233: 07,3120 34755 COMZERO CAF ZERO
055065,000234: 07,3121 51474 INDEX CDUIND
055066,000235: 07,3122 57471 XCH COMMAND
055067,000236: 07,3123 03051 TC NEXTCDU
055068,000237:
055069,000238: 07,3124 37743 SENDPULS CAF 13,14,15
055070,000239: 07,3125 00006 EXTEND
055071,000240: 07,3126 05014 WOR CHAN14
055072,000241: 07,3127 33740 CAF 600MS
055073,000242: 07,3130 13030 TCF COARS2 -1 # THEN TO VARDELAY
055074,000243:
055075,000244: 07,3131 34746 CA+ECE CAF BIT6 # ENABLE ALL THREE ISS CDU ERROR COUNTERS
055076,000245: 07,3132 00006 EXTEND
055077,000246: 07,3133 05012 WOR CHAN12
055078,000247: 07,3134 05261 TC TASKOVER
055079,000248:
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Page 1307
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055081,000250: 07,3135 34750 SETCOARS CAF BIT4 # BYPASS IF ALREADY IN COARSE ALIGN
055082,000251: 07,3136 00006 EXTEND
055083,000252: 07,3137 02012 RAND CHAN12
055084,000253: 07,3140 10000 CCS A
055085,000254: 07,3141 00002 TC Q
055086,000255:
055087,000256: 07,3142 44746 CS BIT6 # CLEAR ISS ERROR COUNTERS
055088,000257: 07,3143 00006 EXTEND
055089,000258: 07,3144 03012 WAND CHAN12
055090,000259:
055091,000260: 07,3145 44742 CS BIT10 # KNOCK DOWN GYRO ACTIVITY
055092,000261: 07,3146 00006 EXTEND
055093,000262: 07,3147 03014 WAND CHAN14
055094,000263: 07,3150 44755 CS ZERO
055095,000264: 07,3151 54047 TS GYROCMD
055096,000265:
055097,000266: 07,3152 34750 CAF BIT4 # PUT ISS IN COARSE ALIGN
055098,000267: 07,3153 00006 EXTEND
055099,000268: 07,3154 05012 WOR CHAN12
055100,000269:
055101,000270: 07,3155 41035 CS DSPTAB +11D # TURN ON NO ATT LAMP
055102,000271: 07,3156 73200 MASK OCT40010
055103,000272: 07,3157 27035 ADS DSPTAB +11D
055104,000273:
055105,000274: 07,3160 41300 CS IMODES33 # DISABLE DAP AUTO AND HOLD MODES
055106,000275: 07,3161 74746 MASK BIT6
055107,000276: 07,3162 27300 ADS IMODES33
055108,000277:
055109,000278: 07,3163 41277 CS IMODES30 # DISABLE IMUFAIL
055110,000279: 07,3164 74750 MASK BIT4
055111,000280: 07,3165 27277 ADS IMODES30
055112,000281:
055113,000282: 07,3166 44747 RNDREFDR CS TRACKBIT # CLEAR TRACK FLAG
055114,000283: 07,3167 70075 MASK FLAGWRD1
055115,000284: 07,3170 54075 TS FLAGWRD1
055116,000285:
055117,000286: 07,3171 44735 CS DRFTBIT # CLEAR DRIFT FLAG
055118,000287: 07,3172 70076 MASK FLAGWRD2
055119,000288: 07,3173 54076 TS FLAGWRD2
055120,000289:
055121,000290: 07,3174 44737 CS REFSMBIT # CLEAR REFSMMAT FLAG
055122,000291: 07,3175 70077 MASK FLAGWRD3
055123,000292: 07,3176 54077 TS FLAGWRD3
055124,000293:
055125,000294: 07,3177 00002 TC Q
055126,000295:
055127,000296: 07,3200 40010 OCT40010 OCT 40010
055128,000297:
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Page 1308
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055130,000299: # IMU FINE ALIGN MODE SWITCH.
055131,000300:
055132,000301: 07,3201 00004 IMUFINE INHINT
055133,000302: 07,3202 03644 TC CAGETSTJ # SEE IF IMU BEING CAGED.
055134,000303:
055135,000304: 07,3203 43735 CS BITS4-5 # RESET ZERO AND COARSE
055136,000305: 07,3204 00006 EXTEND
055137,000306: 07,3205 03012 WAND CHAN12
055138,000307:
055139,000308: 07,3206 44746 CS BIT6 # INSURE DAP AUTO AND HOLD MODES ENABLED
055140,000309: 07,3207 71300 MASK IMODES33
055141,000310: 07,3210 55300 TS IMODES33
055142,000311:
055143,000312: 07,3211 03257 TC NOATTOFF
055144,000313:
055145,000314: 07,3212 34742 CAF BIT10 # IMU FAIL WAS INHIBITED DURING THE
055146,000315: 07,3213 05203 TC WAITLIST # PRESUMABLY PRECEDING COARSE ALIGN. LEAVE
055147,000316: 07,3214 E3,1474 EBANK= CDUIND
055148,000317: 07,3214 03225 16103 2CADR IFAILOK # IT ON FOR THE FIRST 5 SECS OF FINE ALIGN
055149,000318:
055150,000319: 07,3216 35000 CAF 2SECS
055151,000320: 07,3217 05203 TC WAITLIST
055152,000321: 07,3220 E3,1474 EBANK= CDUIND
055153,000322: 07,3220 03223 16103 2CADR IMUFINED
055154,000323:
055155,000324: 07,3222 12746 TCF MODEEXIT
055156,000325:
055157,000326: 07,3223 03632 IMUFINED TC CAGETEST # SEE THAT NO ONE HAS CAGED THE IMU.
055158,000327: 07,3224 13622 TCF ENDIMU
055159,000328:
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Page 1309
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055161,000330: 07,3225 03637 IFAILOK TC CAGETSTQ # ENABLE IMU FIAL UNLESS IMU BEING CAGED.
055162,000331: 07,3226 15261 TCF TASKOVER # IT IS.
055163,000332:
055164,000333: 07,3227 34750 CAF BIT4 # DONT RESET IMU FAIL INHIBIT IF SOMEONE
055165,000334: 07,3230 00006 EXTEND # HAS GONE INTO COARSE ALIGN.
055166,000335: 07,3231 02012 RAND CHAN12
055167,000336: 07,3232 10000 CCS A
055168,000337: 07,3233 15261 TCF TASKOVER
055169,000338:
055170,000339: 07,3234 41277 CS IMODES30 # RESET IMUFAIL.
055171,000340: 07,3235 74737 MASK BIT13
055172,000341: 07,3236 27277 ADS IMODES30
055173,000342: 07,3237 44750 CS BIT4
055174,000343: 07,3240 71277 PFAILOK2 MASK IMODES30
055175,000344: 07,3241 55277 TS IMODES30
055176,000345: 07,3242 04674 TC IBNKCALL # THE ISS WARNING LIGHT MAY COME ON NOW
055177,000346: 07,3243 14703 CADR SETISSW # THAT THE INHIBIT HAS BEEN REMOVED.
055178,000347: 07,3244 15261 TCF TASKOVER
055179,000348:
055180,000349: 07,3245 03637 PFAILOK TC CAGETSTQ # ENABLE PIP FAIL PROG ALARM.
055181,000350: 07,3246 15261 TCF TASKOVER
055182,000351:
055183,000352: 07,3247 41277 CS IMODES30 # RESET IMU AND PIPA FAIL BITS.
055184,000353: 07,3250 74742 MASK BIT10
055185,000354: 07,3251 27277 ADS IMODES30
055186,000355:
055187,000356: 07,3252 41300 CS IMODES33
055188,000357: 07,3253 74737 MASK BIT13
055189,000358: 07,3254 27300 ADS IMODES33
055190,000359:
055191,000360: 07,3255 44747 CS BIT5
055192,000361: 07,3256 13240 TCF PFAILOK2
055193,000362:
055194,000363: 07,3257 43200 NOATTOFF CS OCT40010 # SUBROUTINE TO TURN OFF NO ATT LAMP.
055195,000364: 07,3260 71035 MASK DSPTAB +11D
055196,000365: 07,3261 64735 AD BIT15
055197,000366: 07,3262 55035 TS DSPTAB +11D
055198,000367: 07,3263 00002 TC Q
055199,000368:
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Page 1310
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055201,000370: # ROUITNES TO INITIATE AND TERMINATE PROGRAM USE OF THE PIPAS. NO IMUSTALL REQUIRED IN EITHER CASE.
055202,000371:
055203,000372: 07,3264 44755 PIPUSE CS ZERO
055204,000373: 07,3265 54037 TS PIPAX
055205,000374: 07,3266 54040 TS PIPAY
055206,000375: 07,3267 54041 TS PIPAZ
055207,000376:
055208,000377: 07,3270 03637 PIPUSE1 TC CAGETSTQ # DO NOT ENABLE PIPA FAIL IF IMU IS CAGED
055209,000378: 07,3271 14631 TCF SWRETURN
055210,000379:
055211,000380: 07,3272 00004 INHINT
055212,000381: 07,3273 44753 CS BIT1 # IF PIPA FAILS FROM NOW ON (UNTIL
055213,000382: 07,3274 71277 MASK IMODES30 # PIPFREE), LIGHT ISS WARNING.
055214,000383: 07,3275 55277 TS IMODES30
055215,000384:
055216,000385: 07,3276 04674 PIPFREE2 TC IBNKCALL # ISS WARNING MIGHT COME ON NOW.
055217,000386: 07,3277 14703 CADR SETISSW # (OR GO OFF ON PIPFREE).
055218,000387:
055219,000388: 07,3300 12746 TCF MODEEXIT
055220,000389:
055221,000390: 07,3301 00004 PIPFREE INHINT # PROGRAM DONE WITH PIPAS. DONT LIGHT
055222,000391: 07,3302 41277 CS IMODES30 # ISS WARNING.
055223,000392: 07,3303 74753 MASK BIT1
055224,000393: 07,3304 27277 ADS IMODES30
055225,000394:
055226,000395: 07,3305 74742 MASK BIT10 # IF PIP FAIL ON, DO PROG ALSRM AND RESET
055227,000396: 07,3306 10000 CCS A # ISS WARNING.
055228,000397: 07,3307 12746 TCF MODEEXIT
055229,000398:
055230,000399: 07,3310 05567 TC ALARM
055231,000400: 07,3311 00212 OCT 212
055232,000401:
055233,000402: 07,3312 00004 INHINT
055234,000403:
055235,000404: 07,3313 13276 TCF PIPFREE2
055236,000405:
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Page 1311
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055238,000407: # THE FOLLOWING ROUTINE TORQUES THE IRIGS ACCORDING TO DOUBLE PRECISION INPUTS IN THE SIX REGISTERS
055239,000408: # BEGINNING AT THE ECADR ARRIVING IN A. THE MINIMUM SIZE OF ANY PULSE TRAIN IS 16 PULSES (.25 CDU COUNTS). THE
055240,000409: # UNSENT PORTION OF THE COMMAND IS LEFT INTACT IN THE INPUT COMMAND REGISTERS.
055241,000410:
055242,000411: 07,3314 E3,1400 EBANK= 1400 # VARIABLE, ACTUALLY.
055243,000412:
055244,000413: 07,3314 54161 IMUPULSE TS MPAC +5 # SAVE ARRIVING ECADR.
055245,000414: 07,3315 03644 TC CAGETSTJ # DONT PROCEED IF IMU BEING CAGED.
055246,000415:
055247,000416: 07,3316 11311 CCS LGYRO # SEE IF GYROS BUSY.
055248,000417: 07,3317 03360 TC GYROBUSY # SLEEP.
055249,000418:
055250,000419: 07,3320 54156 TS MPAC +2
055251,000420: 07,3321 34746 CAF BIT6 # ENABLE THE POWER SUPPLY.
055252,000421: 07,3322 00006 EXTEND
055253,000422: 07,3323 05014 WOR CHAN14
055254,000423:
055255,000424: 07,3324 34751 CAF FOUR
055256,000425: 07,3325 05203 GWAKE2 TC WAITLIST # (IF A JOB WAS PUT TO SLEEP, THE POWER
055257,000426: 07,3326 E3,1474 EBANK= CDUIND # SUPPLY IS LEFT ON BY THE WAKING JOB).
055258,000427: 07,3326 03376 16103 2CADR STRTGYRO
055259,000428:
055260,000429: 07,3330 30161 CA MPAC +5 # SET UP EBANK, SAVING CALLER'S EBANK FOR
055261,000430: 07,3331 56003 XCH EBANK # RESTORATION ON RETURN.
055262,000431: 07,3332 56161 XCH MPAC +5
055263,000432: 07,3333 55311 TS LGYRO # RESERVES GYROS.
055264,000433: 07,3334 74357 MASK LOW8
055265,000434: 07,3335 54061 TS ITEMP1
055266,000435:
055267,000436: 07,3336 34752 CAF TWO # FORCE SIGN AGREEMENT ON INPUTS.
055268,000437: 07,3337 54157 GYROAGRE TS MPAC +3
055269,000438: 07,3340 60000 DOUBLE
055270,000439: 07,3341 60061 AD ITEMP1
055271,000440: 07,3342 54160 TS MPAC +4
055272,000441: 07,3343 00006 EXTEND
055273,000442: 07,3344 50000 INDEX A
055274,000443: 07,3345 31401 DCA 1400
055275,000444: 07,3346 52155 DXCH MPAC
055276,000445: 07,3347 07262 TC TPAGREE
055277,000446: 07,3350 52155 DXCH MPAC
055278,000447: 07,3351 50160 INDEX MPAC +4
055279,000448: 07,3352 53401 DXCH 1400
055280,000449:
055281,000450: 07,3353 10157 CCS MPAC +3
055282,000451: 07,3354 13337 TCF GYROAGRE
055283,000452:
055284,000453: 07,3355 30161 CA MPAC +5 # RESTORE CALLER'S EBANK.
055285,000454: 07,3356 54003 TS EBANK
055286,000455: 07,3357 12746 TCF MODEEXIT
055287,000456:
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|
Page 1312
|
055289,000458: # ROUTINES TO ALLOW TORQUING BY ONLY ONE JOB AT A TIME.
055290,000459:
055291,000460: 07,3360 00006 GYROBUSY EXTEND # SAVE RETURN 2FCADR.
055292,000461: 07,3361 30134 DCA BUF2
055293,000462: 07,3362 52155 DXCH MPAC
055294,000463: 07,3363 33375 REGSLEEP CAF LGWAKE
055295,000464: 07,3364 15133 TCF JOBSLEEP
055296,000465:
055297,000466: 07,3365 11311 GWAKE CCS LGYRO # WHEN AWAKENED, SEE IF GYROS STILL BUSY.
055298,000467: 07,3366 13363 TCF REGSLEEP # IF SO, SLEEP SOME MORE.
055299,000468:
055300,000469: 07,3367 54156 TS MPAC +2
055301,000470: 07,3370 00006 EXTEND
055302,000471: 07,3371 30155 DCA MPAC
055303,000472: 07,3372 52134 DXCH BUF2 # RESTORE SWRETURN INFO.
055304,000473: 07,3373 34753 CAF ONE
055305,000474: 07,3374 13325 TCF GWAKE2
055306,000475:
055307,000476: 07,3375 17365 LGWAKE CADR GWAKE
055308,000477:
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|
Page 1313
|
055310,000479: # GYRO-TORQUING WAITLIST TASKS.
055311,000480:
055312,000481: 07,3376 43617 STRTGYRO CS GDESELCT # DE-SELECT LAST GYRO.
055313,000482: 07,3377 00006 EXTEND
055314,000483: 07,3400 03014 WAND CHAN14
055315,000484:
055316,000485: 07,3401 03632 TC CAGETEST
055317,000486:
055318,000487: 07,3402 31311 STRTGYR2 CA LGYRO # JUMP ON PHASE COUNTER IN BITS 13-14.
055319,000488: 07,3403 00006 EXTEND
055320,000489: 07,3404 74750 MP BIT4
055321,000490: 07,3405 50000 INDEX A
055322,000491: 07,3406 13407 TCF +1
055323,000492: 07,3407 03424 TC GSELECT # =0. DO Y GYRO.
055324,000493: 07,3410 00202 OCT 00202
055325,000494:
055326,000495: 07,3411 03424 TC GSELECT # =1. DO Z GYRO.
055327,000496: 07,3412 00302 OCT 00302
055328,000497:
055329,000498: 07,3413 03422 TC GSELECT -2 # =2. DO X GYRO.
055330,000499: 07,3414 00100 OCT 00100
055331,000500:
055332,000501: 07,3415 34755 CAF ZERO # =3. DONE
055333,000502: 07,3416 55311 TS LGYRO
055334,000503: 07,3417 33375 CAF LGWAKE # WAKE A POSSIBLE SLEEPING JOB.
055335,000504: 07,3420 05137 TC JOBWAKE
055336,000505:
055337,000506: 07,3421 13223 NORESET TCF IMUFINED # DO NOT RESET POWER SUPPLY
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|
Page 1314
|
055339,000508: 07,3422 44751 -2 CS FOUR # SPECIAL ENTRY TO REGRESS LGYRO FOR X.
055340,000509: 07,3423 27311 ADS LGYRO
055341,000510:
055342,000511: 07,3424 50002 GSELECT INDEX Q # SELECT GYRO.
055343,000512: 07,3425 30000 CAF 0 # PACKED WORD CONTAINS GYRO SELECT BITS
055344,000513: 07,3426 54064 TS ITEMP4 # AND INCREMENT TO LGYRO.
055345,000514: 07,3427 74757 MASK SEVEN
055346,000515: 07,3430 64737 AD BIT13
055347,000516: 07,3431 27311 ADS LGYRO
055348,000517: 07,3432 54003 TS EBANK
055349,000518: 07,3433 74357 MASK LOW8
055350,000519: 07,3434 54061 TS ITEMP1
055351,000520:
055352,000521: 07,3435 44757 CS SEVEN
055353,000522: 07,3436 70064 MASK ITEMP4
055354,000523: 07,3437 54064 TS ITEMP4
055355,000524:
055356,000525: 07,3440 00006 EXTEND # MOVE DP COMMAND TO RUPTREGS FOR TESTING.
055357,000526: 07,3441 50061 INDEX ITEMP1
055358,000527: 07,3442 31401 DCA 1400
055359,000528: 07,3443 52071 DXCH RUPTREG1
055360,000529:
055361,000530: 07,3444 10070 CCS RUPTREG1
055362,000531: 07,3445 13460 TCF MAJ+
055363,000532: 07,3446 13450 TCF +2
055364,000533: 07,3447 13600 TCF MAJ-
055365,000534:
055366,000535: 07,3450 10071 CCS RUPTREG2
055367,000536: 07,3451 13455 TCF MIN+
055368,000537: 07,3452 13402 TCF STRTGYR2
055369,000538: 07,3453 13575 TCF MIN-
055370,000539: 07,3454 13402 TCF STRTGYR2
055371,000540:
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|
Page 1315
|
055373,000542: 07,3455 63511 MIN+ AD -GYROMIN # SMALL POSITIVE COMMAND. SEE IF AT LEAST
055374,000543: 07,3456 00006 EXTEND # 16 GYRO PULSES.
055375,000544: 07,3457 63402 BZMF STRTGYR2
055376,000545:
055377,000546: 07,3460 00006 MAJ+ EXTEND # DEFINITE POSITIVE OUTPUT.
055378,000547: 07,3461 33621 DCA GYROFRAC
055379,000548: 07,3462 20071 DAS RUPTREG1
055380,000549:
055381,000550: 07,3463 30064 CA ITEMP4 # SELECT POSITIVE TORQUING FOR THIS GYRO.
055382,000551: 07,3464 00006 EXTEND
055383,000552: 07,3465 05014 WOR CHAN14
055384,000553:
055385,000554: 07,3466 36077 CAF LOW7 # LEAVE NUMBER OF POSSIBLE 8192 AUGMENTS
055386,000555: 07,3467 70071 MASK RUPTREG2 # TO INITIAL COMMAND IN MAJOR PART OF LONG
055387,000556: 07,3470 56071 XCH RUPTREG2 # TERM STORAGE AND TRUNCATED FRACTION
055388,000557: 07,3471 00006 GMERGE EXTEND # IN MINOR PART. THE MAJOR PART WILL BE
055389,000558: 07,3472 74744 MP BIT8 # COUNTED DOWN TO ZERO IN THE COURSE OF
055390,000559: 07,3473 54062 TS ITEMP2 # PUTTING OUT THE ENTIRE COMMAND.
055391,000560: 07,3474 30070 CA RUPTREG1
055392,000561: 07,3475 00006 EXTEND
055393,000562: 07,3476 74743 MP BIT9
055394,000563: 07,3477 54070 TS RUPTREG1
055395,000564: 07,3500 30001 CA L
055396,000565: 07,3501 00006 EXTEND
055397,000566: 07,3502 74736 MP BIT14
055398,000567: 07,3503 26062 ADS ITEMP2 # INITIAL COMMAND.
055399,000568:
055400,000569: 07,3504 00006 EXTEND # SEE IF MORE THAN ONE PULSE TRAIN NEEDED
055401,000570: 07,3505 30071 DCA RUPTREG1 # (MORE THAN 16383 PULSES).
055402,000571: 07,3506 67752 AD MINUS1
055403,000572: 07,3507 10000 CCS A
055404,000573: 07,3510 13534 TCF LONGGYRO
055405,000574: 07,3511 77601 -GYROMIN OCT -176 # MAY BE ADJUSTED TO SPECIFY MINIMUM CMD
055406,000575: 07,3512 13516 TCF +4
055407,000576:
055408,000577: 07,3513 34736 CAF BIT14
055409,000578: 07,3514 26062 ADS ITEMP2
055410,000579: 07,3515 34755 CAF ZERO
055411,000580:
055412,000581: 07,3516 50061 +4 INDEX ITEMP1
055413,000582: 07,3517 53401 DXCH 1400
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|
Page 1316
|
055415,000584: 07,3520 30062 CA ITEMP2 # ENTIRE COMMAND.
055416,000585: 07,3521 54047 LASTSEG TS GYROCMD
055417,000586: 07,3522 00006 EXTEND
055418,000587: 07,3523 74742 MP BIT10 # WAITLIST DT
055419,000588: 07,3524 66250 AD THREE # TRUNCATION AND PHASE UNCERTAINTIES.
055420,000589: 07,3525 05203 TC WAITLIST
055421,000590: 07,3526 E3,1474 EBANK= CDUIND
055422,000591: 07,3526 03376 16103 2CADR STRTGYRO
055423,000592:
055424,000593: 07,3530 34742 GYROEXIT CAF BIT10
055425,000594: 07,3531 00006 EXTEND
055426,000595: 07,3532 05014 WOR CHAN14
055427,000596: 07,3533 15261 TCF TASKOVER
055428,000597:
055429,000598: 07,3534 50061 LONGGYRO INDEX ITEMP1
055430,000599: 07,3535 53401 DXCH 1400 # INITIAL COMMAND OUT PLUS N AUGMENTS OF
055431,000600: 07,3536 34736 CAF BIT14 # 8192. INITIAL COMMAND IS AT LEAST 8192.
055432,000601: 07,3537 60062 AD ITEMP2
055433,000602: 07,3540 54047 TS GYROCMD
055434,000603:
055435,000604: 07,3541 00006 AUG3 EXTEND # GET WAITLIST DT TO TIME WHEN TRAIN IS
055436,000605: 07,3542 74742 MP BIT10 # ALMOST OUT.
055437,000606: 07,3543 67750 AD NEG3
055438,000607: 07,3544 05203 TC WAITLIST
055439,000608: 07,3545 E3,1474 EBANK= CDUIND
055440,000609: 07,3545 03550 16103 2CADR 8192AUG
055441,000610:
055442,000611: 07,3547 13530 TCF GYROEXIT
055443,000612:
055444,000613: 07,3550 03632 8192AUG TC CAGETEST
055445,000614:
055446,000615: 07,3551 34750 CAF BIT4
055447,000616: 07,3552 00006 EXTEND
055448,000617: 07,3553 02012 RAND CHAN12
055449,000618: 07,3554 10000 CCS A
055450,000619: 07,3555 13630 TCF IMUBAD
055451,000620: 07,3556 31311 CA LGYRO # ADD 8192 PULSES TO GYROCMD
055452,000621: 07,3557 54003 TS EBANK
055453,000622: 07,3560 74357 MASK LOW8
055454,000623: 07,3561 54061 TS ITEMP1
055455,000624:
055456,000625: 07,3562 50061 INDEX ITEMP1 # SEE IF THIS IS THE LAST AUG.
055457,000626: 07,3563 11400 CCS 1400
055458,000627: 07,3564 13570 TCF AUG2 # MORE TO COME.
055459,000628:
055460,000629: 07,3565 34736 CAF BIT14
055461,000630: 07,3566 26047 ADS GYROCMD
055462,000631: 07,3567 13522 TCF LASTSEG +1
055463,000632:
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|
Page 1317
|
055465,000634: 07,3570 50061 AUG2 INDEX ITEMP1
055466,000635: 07,3571 55400 TS 1400
055467,000636: 07,3572 34736 CAF BIT14
055468,000637: 07,3573 26047 ADS GYROCMD
055469,000638: 07,3574 13541 TCF AUG3 # COMPUTE DT.
055470,000639:
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Page 1318
|
055472,000641: 07,3575 63511 MIN- AD -GYROMIN # POSSIBLE NEGATIVE OUTPUT.
055473,000642: 07,3576 00006 EXTEND
055474,000643: 07,3577 63402 BZMF STRTGYR2
055475,000644:
055476,000645: 07,3600 00006 MAJ- EXTEND # DEFINITE NEGATIVE OUTPUT.
055477,000646: 07,3601 43621 DCS GYROFRAC
055478,000647: 07,3602 20071 DAS RUPTREG1
055479,000648:
055480,000649: 07,3603 30064 CA ITEMP4 # SELECT NEGATIVE TORQUING FOR THIS GYRO.
055481,000650: 07,3604 64743 AD BIT9
055482,000651: 07,3605 00006 EXTEND
055483,000652: 07,3606 05014 WOR CHAN14
055484,000653:
055485,000654: 07,3607 40070 CS RUPTREG1 # SET UP RUPTREGS TO FALL INTO GMERGE.
055486,000655: 07,3610 54070 TS RUPTREG1 # ALL NUMBERS PUT INTO GYROCMD ARE
055487,000656: 07,3611 40071 CS RUPTREG2 # POSITIVE - BIT9 OF CHAN 14 DETERMINES
055488,000657: 07,3612 76077 MASK LOW7 # THE SIGN OF THE COMMAND.
055489,000658: 07,3613 40000 COM
055490,000659: 07,3614 56071 XCH RUPTREG2
055491,000660: 07,3615 40000 COM
055492,000661: 07,3616 13471 TCF GMERGE
055493,000662:
055494,000663: 07,3617 01700 GDESELCT OCT 1700 # TURN OFF SELECT AND ACTIVITY BITS.
055495,000664:
055496,000665: 07,3620 00000 00034 GYROFRAC 2DEC .215 B-21
055497,000666:
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|
Page 1319
|
055499,000668: # IMU MODE SWITCHING ROUTINES COME HERE WHEN ACTION COMPLETE.
055500,000669:
055501,000670: 07,3622 00006 ENDIMU EXTEND # MODE IS BAD IF CAGE HAS OCCURED OR IF
055502,000671: 07,3623 00011 READ DSALMOUT # ISS WARNING IS ON.
055503,000672: 07,3624 74753 MASK BIT1
055504,000673: 07,3625 10000 CCS A
055505,000674: 07,3626 13630 TCF IMUBAD
055506,000675:
055507,000676: 07,3627 13656 IMUGOOD TCF GOODEND # WITH C(A) = 0.
055508,000677:
055509,000678: 07,3630 34755 IMUBAD CAF ZERO
055510,000679: 07,3631 13653 TCF BADEND
055511,000680:
055512,000681: 07,3632 34746 CAGETEST CAF BIT6 # SUBROUTINE TO TERMINATE IMU MODE
055513,000682: 07,3633 71277 MASK IMODES30 # SWITCH IF IMU HAS BEEN CAGED.
055514,000683: 07,3634 10000 CCS A
055515,000684: 07,3635 13630 TCF IMUBAD # DIRECTLY.
055516,000685: 07,3636 00002 TC Q # WITH C(A) = +0.
055517,000686:
055518,000687: 07,3637 41277 CAGETSTQ CS IMODES30 # SKIP IF IMU NOT BEING CAGED.
055519,000688: 07,3640 74746 MASK BIT6
055520,000689: 07,3641 10000 CCS A
055521,000690: 07,3642 24002 INCR Q
055522,000691: 07,3643 00002 TC Q
055523,000692:
055524,000693: 07,3644 41277 CAGETSTJ CS IMODES30 # IF DURING MODE SWITCH INITIALIZATION
055525,000694: 07,3645 74746 MASK BIT6 # IT IS FOUND THAT THE IMU IS BEING CAGED,
055526,000695: 07,3646 10000 CCS A # SET IMUCADR TO -0 TO INDICATE OPERATION
055527,000696: 07,3647 00002 TC Q # COMPLETE BUT FAILED. RETURN IMMEDIATELY
055528,000697: 07,3650 44755 CS ZERO # TO SWRETURN.
055529,000698: 07,3651 55301 TS IMUCADR
055530,000699: 07,3652 12746 TCF MODEEXIT
055531,000700:
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|
Page 1320
|
055533,000702: # GENERALIZED MODE SWITCHING TERMINATION. ENTER AT GOODEND FOR SUCCESSFUL COMPLETION OF AN I/O OPERATION
055534,000703: # OR AT BADEND FOR AN UNSUCCESSFUL ONE. C(A) OR ARRIVAL =0 FOR IMU, 1 FOR OPTICS.
055535,000704:
055536,000705: 07,3653 54071 BADEND TS RUPTREG2 # DEVICE INDEX.
055537,000706: 07,3654 44755 CS ZERO # FOR FAILURE.
055538,000707: 07,3655 13660 TCF GOODEND +2
055539,000708:
055540,000709: 07,3656 54071 GOODEND TS RUPTREG2
055541,000710: 07,3657 44753 CS ONE # FOR SUCCESS.
055542,000711:
055543,000712: 07,3660 54072 TS RUPTREG3
055544,000713: 07,3661 50071 INDEX RUPTREG2 # SEE IF USING PROGRAM ASLEEP.
055545,000714: 07,3662 11301 CCS MODECADR
055546,000715: 07,3663 13667 TCF +4 # YES - WAKE IT UP.
055547,000716: 07,3664 13677 TCF ENDMODE # IF 0, PROGRAM NOT IN YET.
055548,000717:
055549,000718: 07,3665 00006 EXTEND
055550,000719: 07,3666 13700 BZF ENDMODE +1 # BZF = TCF IF MODECADR = -0.
055551,000720:
055552,000721: 07,3667 34755 CAF ZERO # WAKE SLEEPING PROGRAM.
055553,000722: 07,3670 50071 INDEX RUPTREG2
055554,000723: 07,3671 57301 XCH MODECADR
055555,000724: 07,3672 05137 TC JOBWAKE
055556,000725:
055557,000726: 07,3673 40072 CS RUPTREG3 # ADVANCE LOC IF SUCCESSFUL.
055558,000727: 07,3674 50064 INDEX LOCCTR
055559,000728: 07,3675 26164 ADS LOC
055560,000729:
055561,000730: 07,3676 15261 TCF TASKOVER
055562,000731:
055563,000732: 07,3677 30072 ENDMODE CA RUPTREG3 # -0 INDICATES OPERATION COMPLETE BUT
055564,000733: 07,3700 50071 +1 INDEX RUPTREG2 # UNSUCCESSFUL: -1 INDICATES COMPLETE AND
055565,000734: 07,3701 55301 TS MODECADR # SUCCESSFUL.
055566,000735: 07,3702 15261 TCF TASKOVER
055567,000736:
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Page 1321
|
055569,000738: # GENERAL STALLING ROUTINE. USING PROGRAMS COME HERE TO WAIT FOR I/O COMPLETION.
055570,000739:
055571,000740: # PROGRAM DESCRIPTION DATE - 21 FEB 1967
055572,000741: # LOG SECTION IMU MODE SWITCHING
055573,000742: # MOD BY - R. MELANSON TO ADD DOCUMENTATION ASSEMBLY SUNDISK REV. 82
055574,000743:
055575,000744: # FUNCTIONAL DESCRIPTION -
055576,000745: # TO DELAY FURTHER EXECUTION OF THE CALLING ROUTINE UNTIL ITS SELECTED
055577,000746: # I/O FUNCTION IS COMPLETE. THE FOLLOWING CHECKS ON THE CALLING ROUTINE:S
055578,000747: # MODECADR ARE MADE AND ACTED UPON.
055579,000748: # 1) +0 INDICATES INCOMPLETE I/O OPERATION. CALLING ROUTINE IS PUT TO
055580,000749: # SLEEP.
055581,000750: # 2) -1 INDICATES COMPLETED I/O OPERATION. STALL BYPASSES JOBSLEEP
055582,000751: # CALL AND RETURNS TO CALLING ROUTINE AT L+3
055583,000752: # 3) -0 INDICATES COMPLETED I/O WITH FAILURE. STALL CLEARS MODECADR
055584,000753: # AND RETURNS TO CALLING ROUTINE AT L+2.
055585,000754: # 4) VALUE GREATER THAN 0 INDICATES TWO ROUTINES CALLING FOR USE OF
055586,000755: # SAME DEVICE. STALL EXITS TO ABORT WHICH EXECUTES A PROGRAM
055587,000756: # RESTART WHICH IN TURN CLEARS ALL MODECADR REGISTERS.
055588,000757:
055589,000758: # CALLING SEQUENCE -
055590,000759: # L TC BANKCALL
055591,000760: # L+1 CADR (ONE OF 5 STALL ADDRESSES I.E. IMUSTALL, OPTSTALL, RADSTALL,
055592,000761: # AOTSTALL, OR ATTSTALL)
055593,000762:
055594,000763: # NORMAL-EXIT MODE -
055595,000764: # TCF JOBSLEEP OR TCF MODEXIT
055596,000765:
055597,000766: # ALARM OR ABORT EXIT MODE -
055598,000767: # TC ABORT
055599,000768:
055600,000769: # OUTPUT -
055601,000770: # MODECADR=CADR IF JOBSLEEP
055602,000771: # MODECADR=+0 IF I/O COMPLETE
055603,000772: # BUF2=L+3 IF I/O COMPLETE AND GOOD.
055604,000773: # BUF2=L+2 IF I/O COMPLETE BUT FAILED.
055605,000774:
055606,000775: # ERASABLE INITIALIZATION -
055607,000776: # BUF2 CONTAINS RETURN ADDRESS PLUS 1,(L+2)
055608,000777: # BUF2+1 CONTAINS FBANK VALUE OF CALLING ROUTINE.
055609,000778: # MODECADR OF CALLING ROUTINE CONTAINS +0,-1,-0 OR CADR RETURN ADDRESS.
055610,000779:
055611,000780: # DEBRIS -
055612,000781: # RUPTREG2 AND CALLING ROUTINE MODECADR.
055613,000782:
055614,000783: 07,3703 34753 AOTSTALL CAF ONE # AOT.
055615,000784: 07,3704 03710 TC STALL
055616,000785:
055617,000786: 07,3705 34752 RADSTALL CAF TWO
055618,000787: 07,3706 13710 TCF STALL
055619,000788:
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Page 1322
|
055621,000790: 07,3707 07,3703 OPTSTALL EQUALS AOTSTALL
055622,000791:
055623,000792: 07,3707 34755 IMUSTALL CAF ZERO # IMU.
055624,000793:
055625,000794: 07,3710 00004 STALL INHINT
055626,000795: 07,3711 54071 TS RUPTREG2 # SAVE DEVICE INDEX.
055627,000796: 07,3712 50000 INDEX A # SEE IF OPERATION COMPLETE.
055628,000797: 07,3713 11301 CCS MODECADR
055629,000798: 07,3714 13732 TCF MODABORT # ALLOWABLE STATES ARE +0, -1, AND -0.
055630,000799: 07,3715 13726 TCF MODESLP # OPERATION INCOMPLETE.
055631,000800: 07,3716 13722 TCF MODEGOOD # COMPLETE AND GOOD IF = -1.
055632,000801:
055633,000802: 07,3717 50071 MG2 INDEX RUPTREG2 # COMPLETE AND FAILED IF -0. RESET TO +0.
055634,000803: 07,3720 55301 TS MODECADR # RETURN TO CALLER.
055635,000804: 07,3721 12746 TCF MODEEXIT
055636,000805:
055637,000806: 07,3722 10000 MODEGOOD CCS A # MAKE SURE INITIAL STATE -1.
055638,000807: 07,3723 13732 TCF MODABORT
055639,000808:
055640,000809: 07,3724 24133 INCR BUF2 # IF SO, INCREMENT RETURN ADDRESS AND
055641,000810: 07,3725 13717 TCF MG2 # RETURN IMMEDIATELY, SETTING CADR = +0.
055642,000811:
055643,000812: 07,3726 04645 MODESLP TC MAKECADR # CALL FROM SWITCHABLE FIXED ONLY.
055644,000813: 07,3727 50071 INDEX RUPTREG2
055645,000814: 07,3730 55301 TS MODECADR
055646,000815: 07,3731 15133 TCF JOBSLEEP
055647,000816:
055648,000817: 07,3732 52134 MODABORT DXCH BUF2
055649,000818: 07,3733 05706 TC BAILOUT1 # TWO PROGRAMS USING THE SAME DEVICE.
055650,000819: 07,3734 31210 OCT 31210
055651,000820:
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Page 1323
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055653,000822: # CONSTANTS FOR MODE SWITCHING ROUTINES
055654,000823:
055655,000824: 07,3735 5741 BITS3&4 = OCT14
055656,000825: 07,3735 4771 BITS4&6 = OCT50
055657,000826: 07,3735 00030 BITS4-5 OCT 00030
055658,000827: 07,3736 4744 IMUSEFLG EQUALS BIT8 # INTERPRETER SWITCH 7.
055659,000828: 07,3736 77500 -COMMAX DEC -191 B-14
055660,000829: 07,3737 77477 -COMMAX- DEC -192 B-14
055661,000830: 07,3740 00074 600MS DEC 60 B-14
055662,000831: 07,3741 07,3201 IMUFIN20 = IMUFINE
055663,000832: 07,3741 31304 GOMANUR CA ATTCADR # IS KALCMANU FREE
055664,000833: 07,3742 00006 EXTEND
055665,000834: 07,3743 13745 BZF +2
055666,000835: 07,3744 03732 TC MODABORT # BAILOUT
055667,000836: 07,3745 00006 +2 EXTEND
055668,000837: 07,3746 30134 DCA BUF2
055669,000838: 07,3747 53305 DXCH ATTCADR # SAVE FINAL RETURN FOR KALCMAN3
055670,000839:
055671,000840: 07,3750 30006 CA BBANK
055672,000841: 07,3751 74757 MASK SEVEN
055673,000842: 07,3752 27305 ADS ATTCADR +1
055674,000843:
055675,000844: 07,3753 30167 CA PRIORITY
055676,000845: 07,3754 77730 MASK PRIO37
055677,000846: 07,3755 55306 TS ATTPRIO # SAVE USERS PRIO
055678,000847:
055679,000848: 07,3756 33762 CAF KALEBCON # SET EBANK FOR KALCMAN3
055680,000849: 07,3757 54003 TS EBANK
055681,000850: 07,3760 04635 TC POSTJUMP
055682,000851: 07,3761 44004 CADR KALCMAN3
055683,000852: 07,3762 03275 KALEBCON ECADR BCDU
055684,000853:
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Page 1324
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055686,000855: # PROGRAM DESCRIPTION
055687,000856: # IMU STATUS CHECK ROUTINE R02 (SUBROUTINE UTILITY)
055688,000857: # MOD NO - 1
055689,000858: # MOD BY - N.BRODEUR
055690,000859:
055691,000860: # FUNCTIONAL DESCRIPTION
055692,000861: # TO CHECK WHETHER IMU IS ON AND IF ON WHETHER IT IS ALIGNED TO AN
055693,000862: # ORIENTATION KNOWN BY THE CMC. TO REQUEST SELECTION OF THE APPROPRIATE
055694,000863: # PROGRAM IF THE IMU IS OFF OR NOT ALIGNED TO AN ORIENTATION KNOWN BY THE
055695,000864: # CMC. CALLED THROUGH BANKCALL
055696,000865:
055697,000866: # CALLING SEQUENCE -
055698,000867: # L TC BANKCALL
055699,000868: # L+1 CADR R02BOTH
055700,000869:
055701,000870: # SUBROUTINES CALLED
055702,000871: # VARALARM
055703,000872: # FLAGUP
055704,000873:
055705,000874: # NORMAL EXIT MODES
055706,000875: # AT L+2 OF CALLING SEQUENCE
055707,000876:
055708,000877: # ALARM OR ABORT EXIT MODES
055709,000878: # GOTOPOOH, WITH ALARM
055710,000879:
055711,000880: # ERASABLE INITIALIZATION REQUIRED
055712,000881: # NONE
055713,000882:
055714,000883: # DEBRIS
055715,000884: # CENTRALS-A,Q,L
055716,000885:
055717,000886: 34,3706 BANK 34
055718,000887: 04,2000 SETLOC R02
055719,000888: 04,2000 BANK
055720,000889: 04,3232 COUNT* $$/R02
055721,000890: 04,3232 00063 DEC51 DEC 51 B-14
055722,000891: 04,3233 34737 R02BOTH CAF REFSMBIT
055723,000892: 04,3234 70077 MASK FLAGWRD3
055724,000893: 04,3235 10000 CCS A
055725,000894: 04,3236 03247 TC R02ZERO # ZERO IMUS
055726,000895:
055727,000896: 04,3237 31277 CA IMODES30
055728,000897: 04,3240 74743 MASK BIT9 # IS ISS INITIALIZED
055729,000898: 04,3241 00006 EXTEND
055730,000899: 04,3242 13244 BZF +2
055731,000900: 04,3243 44750 CS BIT4 # SEND IMU ALARM CODE 210
055732,000901: 04,3244 63252 AD OCT220 # SEND REFSMM ALARM
055733,000902: 04,3245 05734 TC VARALARM
055734,000903:
055735,000904: 04,3246 06001 TC GOTOPOOH
055736,000905:
055737,000906: 04,3247 05504 R02ZERO TC UPFLAG
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Page 1325
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055739,000908: 04,3250 00007 ADRES IMUSE
055740,000909: 04,3251 14631 TCF SWRETURN
055741,000910: 04,3252 00220 OCT220 OCT 220
055742,000911:
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Page 1326
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055744,000913: # PROGRAM DESCRIPTION P06 10FEB67
055745,000914:
055746,000915: # TRANSFER THE ISS/CMC FROM THE OPERATE TO THE STANDBY CONDITION.
055747,000916:
055748,000917: # THE NORMAL CONDITION OF READINESS OF THE GNCS WHEN NOT IN USE IS STANDBY. IN THIS CONDITION THE IMU
055749,000918: # HEATER POWER IS ON. THE IMU OPERATE POWER IS OFF. THE COMPUTER POWER IS ON. THE OPTICS POWER IS OFF. THE
055750,000919: # CMC STANDBY ON THE MAIN AND LEB DISKYS IS ON.
055751,000920:
055752,000921: # CALLING SEQUENCE:
055753,000922: # ASTRONAUT REQUEST THROUGH DSKY V37E 06E.
055754,000923:
055755,000924: # SUBROUTINES CALLED:
055756,000925: # GOPERF1
055757,000926: # BANKCALL
055758,000927: # FLAGDOWN
055759,000928:
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Page 1327
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055761,000930: # PRESTAND PREPARES FOR STANDBY BY SNAPSHOTTING THE SCALER AND TIME1 TIME2
055762,000931: # THE LOW 5 BITS OF THE SCALER ARE INSPECTED TO INSURE COMPATABILITY
055763,000932: # BETWEEN THE SCALER READING AND THE TIME1 TIME2 READING.
055764,000933:
055765,000934: 37,2000 SETLOC P05P06
055766,000935: 37,2000 BANK
055767,000936:
055768,000937: 37,3652 0314 EBANK= TIME2SAV
055769,000938: 37,3652 COUNT* $$/P06
055770,000939:
055771,000940: 37,3652 05504 P06 TC UPFLAG # SET NODOV37 BIT
055772,000941: 37,3653 00054 ADRES NODOFLAG
055773,000942:
055774,000943: 37,3654 00004 PRESTAND INHINT
055775,000944: 37,3655 00006 EXTEND
055776,000945: 37,3656 30025 DCA TIME2 # SNAPSHOT TIME1 TIME2
055777,000946: 37,3657 52315 DXCH TIME2SAV
055778,000947: 37,3660 03711 TC SCALPREP
055779,000948: 37,3661 03654 TC PRESTAND # T1,T2,SCALER NOT COMPATIBLE
055780,000949: 37,3662 52155 DXCH MPAC # T1,T2 AND SCALER OK
055781,000950: 37,3663 52317 DXCH SCALSAVE # STORE SCALER
055782,000951: 37,3664 00004 INHINT
055783,000952: 37,3665 04616 TC BANKCALL
055784,000953: 37,3666 17166 CADR RNDREFDR # REFSMM, DRIFT, TRACK FLAGS DOWN
055785,000954:
055786,000955: 37,3667 05516 TC DOWNFLAG
055787,000956: 37,3670 00007 ADRES IMUSE # IMUSE DOWN
055788,000957: 37,3671 05516 TC DOWNFLAG
055789,000958: 37,3672 00010 ADRES RNDVZFLG # RNDVZFLG DOWN
055790,000959:
055791,000960: 37,3673 34741 CAF BIT11
055792,000961: 37,3674 00006 EXTEND
055793,000962: 37,3675 05013 WOR CHAN13 # SET STANDBY ENABLE BIT
055794,000963:
055795,000964: 37,3676 05353 TC PHASCHNG # SET RESTART TO POSTAND WHEN STANDBY
055796,000965: 37,3677 07024 OCT 07024 # RECOVERS
055797,000966: 37,3700 20000 OCT 20000
055798,000967: 37,3701 0316 EBANK= SCALSAVE
055799,000968: 37,3701 03731 76060 2CADR POSTAND
055800,000969:
055801,000970: 37,3703 34774 CAF OCT62
055802,000971: 37,3704 04616 TC BANKCALL
055803,000972: 37,3705 20624 CADR GOPERF1
055804,000973: 37,3706 13703 TCF -3
055805,000974: 37,3707 13703 TCF -4
055806,000975: 37,3710 13703 TCF -5
055807,000976:
055808,000977: 37,3711 4774 OCT62 EQUALS .5SEC # DEC 50 = OCT 62
055809,000978:
055810,000979: # THE LOW 5 BITS OF THE SCALER READS 10000 FOR THE FIRST INTERVAL AFTER A
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Page 1328
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055812,000981: # T1 INCREMENT. IF SCALPREP DETECTS THIS INTERVAL THE T1,T2 AND SCALER
055813,000982: # DATA ARE NOT COMPATABLE AND RETURN IS TO L+1 FOR ANOTHER READING OF THE
055814,000983: # DATA. OTHERWISE, THE RETURN IS TO L+2 TO PROCEED. ROUTINE ALSO PREPARES
055815,000984: # THE SCALER READING FOR COMPUTATION OF THE INCREMENT TO UPDATE T1T2. (THE
055816,000985: # 10 MS BIT (BIT 6) OF THE SCALER IS INCREMENTED 5 MS OUT OF PHASE FROM
055817,000986: # T1.) ADDITION OF 5 MS (BIT 5) TO THE SCALER READING HAS THE EFFECT OF
055818,000987: # ADJUSTING BIT 6 IN THE SCALER TO BE IN PHASE WITH BIT 1 OF T1. THE LOW 5
055819,000988: # BITS OF THE SCALER READING ARE THEN SET TO ZERO, TO TRUNCATE THE SCALER
055820,000989: # DATA TO 10 MS. RESULTS ARE STORED IN MPAC, +1.
055821,000990:
055822,000991: 37,3711 00006 SCALPREP EXTEND
055823,000992: 37,3712 22156 QXCH MPAC +2
055824,000993: 37,3713 04103 TC FINETIME +1
055825,000994: 37,3714 00003 RELINT
055826,000995: 37,3715 52155 DXCH MPAC
055827,000996: 37,3716 34747 CA BIT5 # ADD 5 MS TO THE SCALER READING.
055828,000997: 37,3717 54001 TS L
055829,000998: 37,3720 34755 CA ZERO
055830,000999: 37,3721 20155 DAS MPAC
055831,001000: 37,3722 44346 CS LOW5 # SET LOW 5 BITS OF (SCALER+5MS) TO ZERO
055832,001001: 37,3723 70155 MASK MPAC +1 # AND STORE RESULTS IN MPAC,+1.
055833,001002: 37,3724 56155 XCH MPAC +1
055834,001003: 37,3725 74346 MASK LOW5 # TEST LOW 5 BITS OF SCALER FOR THE FIRST
055835,001004: # INTERVAL AFTER THE T1 INCREMENT
055836,001005: # (NOW = 00000, SINCE BIT 5 ADDED).
055837,001006: 37,3726 10000 CCS A # IS IT 1ST INTERVAL AFTER T1 INCREMENT
055838,001007: 37,3727 24156 INCR MPAC +2 # NO
055839,001008: 37,3730 00156 TC MPAC +2 # YES
055840,001009:
055841,001010: # POSTAND RECOVERS TIME AFTER STANDBY. THE SCALER IS SNAPSHOTTED AND THE
055842,001011: # TIME1 TIME2 COUNTER IS SET TO ZERO. THE LOW 5 BITS OF THE SCALER ARE
055843,001012: # INSPECTED TO INSURE COMPATABILITY BETWEEN THE SCALER READING AND THE
055844,001013: # CLEARING OF THE TIME COUNTER. IT THEN COMPUTES THE DIFFERENCE IN SCALER
055845,001014: # VALUES (IN DP) AND ADDS THIS TO THE PREVIOUSLY SNAPSHOTTED VALUES OF
055846,001015: # TIME1 TIME2 AND PLACES THIS NEW TIME INTO THE TIME1 TIME2 COUNTER.
055847,001016:
055848,001017: 37,3731 COUNT* $$/P05
055849,001018:
055850,001019: 37,3731 44741 POSTAND CS BIT11 # RECOVER TIME AFTER STANDBY.
055851,001020: 37,3732 00006 EXTEND
055852,001021: 37,3733 03013 WAND CHAN13 # CLEAR STANDBY ENABLE BIT
055853,001022: 37,3734 00004 INHINT
055854,001023: 37,3735 34755 CA ZERO
055855,001024: 37,3736 54001 TS L
055856,001025: 37,3737 52025 DXCH TIME2 # CLEAR TIME1 TIME2
055857,001026: 37,3740 03711 TC SCALPREP # STORE SCALER IN MPAC, MPAC+1
055858,001027: 37,3741 03734 TC POSTAND +3 # T1,T2,SCALER NOT COMPATIBLE
055859,001028: 37,3742 00006 EXTEND # T1,T2 AND SCALER OK
055860,001029: 37,3743 40317 DCS SCALSAVE
055861,001030: 37,3744 20155 DAS MPAC # FORM DP DIFFERENCE OF POSTSTANDBY SCALER
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Page 1329
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055863,001032: 37,3745 34742 CAF BIT10 # MINUS PRESTANDBY SCALER AND SHIFT RIGHT
055864,001033: 37,3746 07312 TC SHORTMP # 5 TO ALIGN BITS WITH TIME1 TIME2.
055865,001034: 37,3747 34755 CAF ZERO
055866,001035: 37,3750 54156 TS MPAC +2 # NEEDED FOR TP AGREE
055867,001036: 37,3751 07262 TC TPAGREE # MAKE DP DIFF AGREE
055868,001037: 37,3752 10154 CCS MPAC
055869,001038: 37,3753 03760 TC POSTCOM # IF DP DIFF NET +, NO SCALER OVERFLOW
055870,001039: 37,3754 03760 TC POSTCOM # BETWEEN PRE AND POST STANDBY.
055871,001040: 37,3755 03756 TC +1 # IF DP DIFF NET -, SCALER OVERFLOWED. ADD
055872,001041: 37,3756 34742 CAF BIT10 # BIT 10 TO HIGH DIFF TO CORRECT.
055873,001042: 37,3757 26154 ADS MPAC
055874,001043: 37,3760 00006 POSTCOM EXTEND # C(MPAC,+1) IS MAGNITUDE OF DELTA SCALER.
055875,001044: 37,3761 30315 DCA TIME2SAV # PRESTANDBY TIME1 TIME2
055876,001045: 37,3762 20155 DAS MPAC
055877,001046: 37,3763 07262 TC TPAGREE # FORCE SIGN AGREEMENT
055878,001047: 37,3764 52155 DXCH MPAC # UPDATED VALUE FOR T1,T2.
055879,001048: 37,3765 20025 DAS TIME2 # LOAD UPDATED VALUE INTO T1,T2, WITH
055880,001049: 37,3766 05516 TC DOWNFLAG # CLEAR NODOFLAG
055881,001050: 37,3767 00054 ADRES NODOFLAG
055882,001051:
055883,001052: 37,3770 06001 TC GOTOPOOH
055884,001053:
End of include-file IMU_MODE_SWITCHING_ROUTINES.agc. Parent file is MAIN.agc