Source Code
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These source-code files are part of a reconstructed copy of Comanche 72/3 (AKA Manche72 revision 3),
the final, flown mission release of the Apollo Guidance Computer (AGC) Command Module (CM) software
for Apollo 13.
The starting point was the source code of Comanche 72 (itself previously reconstructed). Comanche 72
source code was then modified by incorporating changes known from contemporary documentation to have
been made between revisions 72 and 72/3. The resulting code assembles to have identical
memory-bank checksums as those specified in NASA drawing 2021153G; this gives reasonably
high confidence that the changes that have been made are correct. In places where
ambiguity exists, this ambiguity is discussed in "## Reconstruction:" comments.
Since no contemporary listings of Comanche 72/3 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.
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023351,000002: ## Copyright: Public domain.
023352,000003: ## Filename: TPI_SEARCH.agc
023353,000004: ## Purpose: A section of Manche72 revision 3.
023354,000005: ## It is part of the reconstructed source code for the final, flown
023355,000006: ## release of the software for the Command Module's (CM) Apollo
023356,000007: ## Guidance Computer (AGC) for Apollo 13. No original listings
023357,000008: ## of this program are available; instead, this file was recreated
023358,000009: ## from a reconstructed copy of Comanche 072. It has been adapted
023359,000010: ## such that the resulting bugger words exactly match those
023360,000011: ## specified for Manche72 revision 3 in NASA drawing 2021153G,
023361,000012: ## which gives relatively high confidence that the reconstruction
023362,000013: ## is correct.
023363,000014: ## Assembler: yaYUL
023364,000015: ## Contact: Ron Burkey <info@sandroid.org>.
023365,000016: ## Website: www.ibiblio.org/apollo/index.html
023366,000017: ## Mod history: 2024-05-19 MAS Created from Comanche 072.
023367,000018:
023368,000019: # PROGRAM DESCRIPTION S17.1 AND S17.2
023369,000020:
023370,000021: # FUNCTIONAL DESCRIPTION
023371,000022:
023372,000023: # THE TPI SEARCH ROUTINE DETERMINES THE MINIMUM TOTAL VELOCITY TRANSFER TRAJECTORY FROM A GIVEN TPI
023373,000024: # MANEUVER TIME WITHIN THE CONSTRAINT OF A SAFE PERICENTER. THIS VELOCITY IS THE SUM OF THE IMPULSIVE VELOCITIES
023374,000025: # FOR THE TPI AND TPF MANEUVERS.
023375,000026:
023376,000027: # THE S17.1 ROUTINE EXTRAPOLATES THE STATE VECTORS OF BOTH VEHICLES TO THE TPI TIME AND COMPUTES THE
023377,000028: # RELATIVE PHASE ANGLE BETWEEN THE VEHICLES, THE ALTITUDE DIFFERENCE (I.E. THE MAGNITUDE DIFFERENCE OF THE
023378,000029: # POSITION VECTORS) AND SELECTS A SEARCH SECTOR BASED ON THE SIGN OF THE ALTITUDE DIFFERENCE.
023379,000030:
023380,000031: # THE S17.2 ROUTINE FURTHER DEFINES THE SEARCH SECTOR BY COMPUTING ANGULAR LIMITS AND USES THE TIME THETA
023381,000032: # SUBROUTINE TO COMPUTE THE SEARCH START AND END TIMES. THE SEARCH IS THEN MADE IN AN ITERATIVE LOOP USING THE
023382,000033: # LAMBERT SUBROUTINE TO COMPUTE THE VELOCITIES REQUIRED AT TPI TIME AND AT TPF TIME. EXIT FROM THE SEARCH LOOP
023383,000034: # IS MADE WHEN SOLUTION CRITERIA ARE MET (NORMAL EXIT) OR AS SOON AS IT IS EVIDENT THAT NO SOLUTION EXISTS IN
023384,000035: # THE SECTOR SEARCHED.
023385,000036:
023386,000037: # CALLING SEQUENCE
023387,000038:
023388,000039: # BOTH ROUTINES ARE CALLED IN INTERPRETIVE CODE AND RETURN VIA QPRET. S17.1 HAS ONLY A NORMAL EXIT.
023389,000040: # S17.2 RETURNS VIA QPRET FOR NORMAL EXIT AND TO ALARUMS FOR ERROR EXIT.
023390,000041:
023391,000042: # SUBROUTINES CALLED
023392,000043:
023393,000044: # CSMCONIC
023394,000045: # LEMCONIC
023395,000046: # TIMETHET
023396,000047: # INITVEL
023397,000048:
023398,000049: 36,2012 BANK 36
023399,000050: 35,2000 SETLOC P17S1
023400,000051: 35,2000 BANK
023401,000052:
023402,000053: 35,3123 COUNT 36/TPI
023403,000054:
023404,000055: 35,3123 E7,1537 EBANK= RACT3
023405,000056:
023406,000057: # **** TEMPORARY ****
023407,000058:
023408,000059: 35,3123 00004 31566 HPE 2DEC 157420.0 B-29 # EARTH'S MIN. PERICENTER ALTITUDE 85 N.M.
023409,000060:
023410,000061: 35,3125 00000 12326 HPL 2DEC 10668.0213 B-29 # MOON:S MIN. PERICENTER ALTITUDE 35000 FT
023411,000062:
023412,000063: 35,3127 00002 16100 CDSEC 2DEC 40000 B-28
023413,000064:
023414,000065: 35,3131 00000 35230 CLSEC 2DEC 15000 B-28
023415,000066:
023416,000067: 35,3133 12137 06033 PIINVERS 2DEC .3183098862
023417,000068:
023418,000069: 35,3135 06161 30707 SEC1THET 2DEC .1944444444
023419,000070:
023420,000071: 35,3137 35252 25253 SEC2THET 2DEC .9166666667
023421,000072:
023422,000073: 35,3141 67777 77777 MANYFEET 2DEC -1.0 B-2
023423,000074:
023424,000075: 35,3143 00000 30760 LIMVEL 2DEC .6096 E-2 B-7 # 2FPS
023425,000076:
023426,000077: 35,3145 00000 00114 DFTMOON 2DEC .1524 E3 B-29 # 500 FEET
023427,000078:
023428,000079: 35,3147 00040 30447 DP-.002 2DEC 0.002
023429,000080:
023430,000081: 36,2000 SETLOC P17S
023431,000082: 36,2000 BANK
023432,000083: 36,2012 71220 S17.1 STQ DLOAD
023433,000084: 36,2013 01340 NORMEX
023434,000085: 36,2014 03663 TTPI
023435,000086: 36,2015 34041 STCALL TDEC1 # ADVANCE PASSIVE VEHICLE TO TPI
023436,000087: 36,2016 27135 LEMCONIC
023437,000088: 36,2017 77624 CALL
023438,000089: 36,2020 45233 LEMSTORE
023439,000090: 36,2021 77745 DLOAD
023440,000091: 36,2022 03663 TTPI
023441,000092: 36,2023 34041 STCALL TDEC1 # ADVANCE ACTIVE VEHICLE TO TPI
023442,000093: 36,2024 27123 CSMCONIC
023443,000094: 36,2025 77624 CALL
023444,000095: 36,2026 45243 CSMSTORE
023445,000096: 36,2027 77775 VLOAD
023446,000097: 36,2030 03540 RACT3
023447,000098: 36,2031 63246 ABVAL PDVL # /RA/ 0D PL 2D
023448,000099: 36,2032 03554 RPASS3
023449,000100: 36,2033 65256 UNIT PDDL # UNIT RP 0D PL 6D
023450,000101: 36,2034 43021 BDSU SET
023451,000102: 36,2035 00045 36D # /RP/ -/RA/
023452,000103: 36,2036 00076 KFLAG # OFF = +
023453,000104: 36,2037 43040 BMN CLEAR
023454,000105: 36,2040 74042 +2
023455,000106: 36,2041 00276 KFLAG # ON = -
023456,000107: 36,2042 27754 STOVL DELHITE
023457,000108: 36,2043 00001 0D
023458,000109: 36,2044 53435 VXV UNIT
023459,000110: 36,2045 03562 VPASS3
023460,000111: 36,2046 27646 STOVL E2 # ALMOST IT SAVE FOR 17.2
023461,000112: 36,2047 03540 RACT3
023462,000113: 36,2050 46206 PUSH VPROJ
023463,000114: 36,2051 03646 E2
023464,000115: 36,2052 51352 VSL2 BVSU # RPA
023465,000116: 36,2053 50256 UNIT DOT
023466,000117: 36,2054 00001 0D
023467,000118: 36,2055 65552 SL1 ACOS
023468,000119: 36,2056 77715 PDVL
023469,000120: 36,2057 50235 VXV DOT
023470,000121: 36,2060 03540 RACT3
023471,000122: 36,2061 03646 E2
023472,000123: 36,2062 75325 PDDL SIGN
023473,000124: 36,2063 77626 STADR
023474,000125: 36,2064 61160 STODL THETZERO # CENTRAL ANGLE
023475,000126: 36,2065 00047 X1
023476,000127: 36,2066 37746 STCALL XRS # SAVE INDICES FOR FURTHER USE
023477,000128: 36,2067 01340 NORMEX # += ACTIVE AHEAD -= ACTIVE BEHIND
023478,000129: 36,2070 77220 S17.2 STQ VLOAD # COMPUTE SEARCH SECTOR LIMITS
023479,000130: 36,2071 03657 QTEMP
023480,000131: 36,2072 03540 RACT3
023481,000132: 36,2073 50256 UNIT DOT
023482,000133: 36,2074 03646 E2
023483,000134: 36,2075 75446 ABS SQRT
023484,000135: 36,2076 43352 SL1 DAD
023485,000136: 36,2077 33150 DP-.002 # ADD .002 RADIANS TO IT
023486,000137: 36,2100 57414 BON DCOMP # GIVES CORRECT SINE, COSINE MUST BE
023487,000138: 36,2101 00316 KFLAG # COMP. ADD .5 FOR ANGLE
023488,000139: 36,2102 74103 +1
023489,000140: # PHI(0)=180-(-(THETAZERO +K5IT)), PHI(I)=180-(-(THETAZERO+K2IT))
023490,000141: # SIN(180-ALPHA)=SIN(ALPHA) ETC
023491,000142: 36,2103 40205 DMP SETPD
023492,000143: 36,2104 33134 PIINVERS # REVOLUTIONARY HERES TWO IT
023493,000144: 36,2105 00001 0D
023494,000145: 36,2106 45206 PUSH DSU
023495,000146: 36,2107 02617 THETZERO
023496,000147: 36,2110 02611 STORE IT # PHI(I) , -(THETZERO + K2IT)
023497,000148: 36,2111 41525 PDDL PUSH
023498,000149: 36,2112 43342 SR1 DAD
023499,000150: 36,2113 41415 DAD PUSH # PHI(0) , -(THETZERO + K5IT)
023500,000151: 36,2114 43156 SIN SET
023501,000152: 36,2115 03466 RVSW
023502,000153: 36,2116 16732 STODL SNTH
023503,000154: 36,2117 50146 COS BMN
023504,000155: 36,2120 74122 +2
023505,000156: 36,2121 77676 DCOMP
023506,000157: 36,2122 16734 STODL CSTH
023507,000158: 36,2123 03746 XRS
023508,000159: 36,2124 24047 STOVL X1
023509,000160: 36,2125 03554 RPASS3
023510,000161: 36,2126 77657 VSR*
023511,000162: 36,2127 57176 0,2
023512,000163: 36,2130 26657 STOVL RVEC
023513,000164: 36,2131 03562 VPASS3
023514,000165: 36,2132 77657 VSR*
023515,000166: 36,2133 57176 0,2
023516,000167: 36,2134 36746 STCALL VVEC
023517,000168: 36,2135 24744 TIMETHET
023518,000169: 36,2136 77745 DLOAD # SAVE START TIME AND GET END TIME
023519,000170: 36,2137 00037 T
023520,000171: 36,2140 03752 STORE TF
023521,000172: 36,2141 16627 STODL TFO
023522,000173: 36,2142 02611 IT
023523,000174: 36,2143 73406 PUSH SIN
023524,000175: 36,2144 16732 STODL SNTH
023525,000176: 36,2145 50146 COS BMN
023526,000177: 36,2146 74150 +2
023527,000178: 36,2147 77676 DCOMP
023528,000179: 36,2150 02734 STORE CSTH
023529,000180: 36,2151 45150 LXA,1 CALL
023530,000181: 36,2152 03745 XRS
023531,000182: 36,2153 24744 TIMETHET
023532,000183: # INITIALIZE LOOP
023533,000184: 36,2154 43145 DLOAD CLEAR
023534,000185: 36,2155 00037 T
023535,000186: 36,2156 03661 ITSWICH
023536,000187: 36,2157 16621 STODL TFI # SAVE TIME FOR LOOP TEST
023537,000188: 36,2160 15342 DPPOSMAX
023538,000189: 36,2161 16623 STODL DELVEE
023539,000190: 36,2162 33142 MANYFEET
023540,000191: 36,2163 16625 STODL HP
023541,000192: 36,2164 33136 SEC1THET # 70 DEGREES
023542,000193: 36,2165 71214 BON DLOAD
023543,000194: 36,2166 00316 KFLAG
023544,000195: 36,2167 74171 +2
023545,000196: 36,2170 33140 SEC2THET # 330 DEGREES
023546,000197: 36,2171 37750 STCALL THETL
023547,000198: 36,2172 74214 CONCAUL
023548,000199: 36,2173 70545 BIS DLOAD SR1
023549,000200: 36,2174 02734 CSTH
023550,000201: 36,2175 14021 STODL COSTH
023551,000202: 36,2176 02732 SNTH
023552,000203: 36,2177 77742 SR1
023553,000204: 36,2200 34023 STCALL SINTH # GET 4 QUADRANT THETA
023554,000205: 36,2201 47260 ARCTRIG
023555,000206: 36,2202 43244 BPL DAD
023556,000207: 36,2203 74205 +2
023557,000208: 36,2204 15342 DPPOSMAX # PUT THETA BETWEEN 0,1
023558,000209: 36,2205 65221 BDSU PDDL
023559,000210: 36,2206 03750 THETL
023560,000211: 36,2207 03752 TF
023561,000212: 36,2210 75225 DSU SIGN # FAST TIMES
023562,000213: 36,2211 02621 TFI
023563,000214: 36,2212 77640 BMN
023564,000215: 36,2213 74416 RNGETEST # TIME MUST HAVE A STOP
023565,000216: # ADVANCE PASSIVE FOR TARGET VECTOR
023566,000217: 36,2214 77745 CONCAUL DLOAD
023567,000218: 36,2215 03663 TTPI
023568,000219: 36,2216 43015 DAD BON
023569,000220: 36,2217 03752 TF
023570,000221: 36,2220 01312 AVFLAG
023571,000222: 36,2221 74226 ADVCSM
023572,000223: 36,2222 34041 STCALL TDEC1
023573,000224: 36,2223 27135 LEMCONIC
023574,000225: 36,2224 77650 GOTO
023575,000226: 36,2225 74230 JUNCT3
023576,000227: 36,2226 34041 ADVCSM STCALL TDEC1
023577,000228: 36,2227 27123 CSMCONIC
023578,000229: # SAVE BACK VALUES OF HP AND DELVEE
023579,000230: 36,2230 77775 JUNCT3 VLOAD
023580,000231: 36,2231 00007 VATT
023581,000232: 36,2232 27640 STOVL VPASS4
023582,000233: 36,2233 00001 RATT
023583,000234: 36,2234 03632 STORE RPASS4
023584,000235: 36,2235 17415 STODL RTARG
023585,000236: 36,2236 03752 TF
023586,000237: 36,2237 17423 STODL DELLT4
023587,000238: 36,2240 02625 HP
023588,000239: 36,2241 16631 STODL HPO
023589,000240: 36,2242 02623 DELVEE
023590,000241: 36,2243 16633 STODL DELVEO
023591,000242: # PREPARE FOR LAMBERT
023592,000243: 36,2244 03663 TTPI
023593,000244: 36,2245 17503 STODL INTIME
023594,000245: 36,2246 03746 XRS
023595,000246: 36,2247 17746 STODL RTX1
023596,000247: 36,2250 15334 HI6ZEROS
023597,000248: 36,2251 65201 SETPD PDDL
023598,000249: 36,2252 00001 0D
023599,000250: 36,2253 33122 EPSFOUR
023600,000251: 36,2254 77715 PDVL
023601,000252: 36,2255 03540 RACT3
023602,000253: 36,2256 27570 STOVL RINIT
023603,000254: 36,2257 03546 VACT3
023604,000255: 36,2260 37576 STCALL VINIT
023605,000256: 36,2261 22000 INITVEL
023606,000257: # COMPUTE H ET CETERA
023607,000258: 36,2262 52375 VLOAD VSU
023608,000259: 36,2263 03620 VTPRIME
023609,000260: 36,2264 03640 VPASS4
023610,000261: 36,2265 41446 ABVAL PUSH
023611,000262: 36,2266 26637 STOVL RELDELV # /V2-VP(TPI+TF)/
023612,000263: 36,2267 03646 DELVEET3 # V1-VA
023613,000264: 36,2270 77646 ABVAL # /V1-VA/
023614,000265: 36,2271 02635 STORE MAGVTPI
023615,000266: 36,2272 45415 DAD STADR
023616,000267: 36,2273 61154 STODL DELVEE
023617,000268: 36,2274 03746 XRS
023618,000269: 36,2275 24047 STOVL X1
023619,000270: 36,2276 03612 VIPRIME
023620,000271: 36,2277 77657 VSR*
023621,000272: 36,2300 57176 0,2
023622,000273: 36,2301 26746 STOVL VVEC
023623,000274: 36,2302 03540 RACT3
023624,000275: 36,2303 77657 VSR*
023625,000276: 36,2304 57176 0,2
023626,000277: 36,2305 36657 STCALL RVEC
023627,000278: 36,2306 45163 PERIAPO
023628,000279: 36,2307 71354 LXA,2 DLOAD
023629,000280: 36,2310 03746 XRS +1
023630,000281: 36,2311 77657 SL*
023631,000282: 36,2312 57576 0,2
023632,000283: 36,2313 02625 STORE HP
023633,000284: # ITSWICH DENOTES INTERPOLATION -- SOLUTION ACCEPTANCE IS FORCED
023634,000285: 36,2314 71214 BON DLOAD
023635,000286: 36,2315 03701 ITSWICH
023636,000287: 36,2316 74427 ENDEN
023637,000288: 36,2317 02321 HPERMIN
023638,000289: 36,2320 50025 DSU BMN
023639,000290: 36,2321 02625 HP
023640,000291: 36,2322 74365 HALFSAFE
023641,000292: 36,2323 45325 PDDL DSU # WAS PERICENTER ALT SAFE
023642,000293: 36,2324 02321 HPERMIN
023643,000294: 36,2325 02631 HPO
023644,000295: 36,2326 45240 BMN DSU # (HPLIM-HPO)-(HPLIM-HP)=HP-HPO
023645,000296: 36,2327 74344 INTERP # SOLUTION AT HAND
023646,000297: 36,2330 71240 BMN DLOAD
023647,000298: 36,2331 73254 ALARUMS # ITS GETTING WORSE - SOUND THE ALARM
023648,000299: 36,2332 33130 CDSEC
023649,000300: 36,2333 57414 JUNCT1 BOFF DCOMP # OFF IS PLUS ON IS MINUS
023650,000301: 36,2334 00356 KFLAG
023651,000302: 36,2335 74336 +1
023652,000303: 36,2336 03744 STORE DELTEE
023653,000304: 36,2337 43345 JUNCT2 DLOAD DAD
023654,000305: 36,2340 03744 DELTEE
023655,000306: 36,2341 03752 TF
023656,000307: 36,2342 37752 STCALL TF
023657,000308: 36,2343 74173 BIS # RECYCLE
023658,000309: 36,2344 45214 INTERP SET DSU # HP-HPO
023659,000310: 36,2345 03461 ITSWICH
023660,000311: 36,2346 65301 NORM PDDL
023661,000312: 36,2347 00047 X1
023662,000313: 36,2350 33146 DFTMOON
023663,000314: 36,2351 45215 DAD DSU
023664,000315: 36,2352 02321 HPERMIN
023665,000316: 36,2353 02625 HP
023666,000317: 36,2354 70501 NORM SR1
023667,000318: 36,2355 00050 X2
023668,000319: 36,2356 56264 XSU,2 DDV
023669,000320: 36,2357 00046 X1
023670,000321: 36,2360 53605 DMP SR*
023671,000322: 36,2361 03744 DELTEE
023672,000323: 36,2362 57177 0 -1,2
023673,000324: 36,2363 37744 STCALL DELTEE
023674,000325: 36,2364 74337 JUNCT2
023675,000326: 36,2365 45325 HALFSAFE PDDL DSU # SAVE HP-HPLIM FOR POSSIBLE
023676,000327: 36,2366 02623 DELVEE
023677,000328: 36,2367 02633 DELVEO # SAVE THIS TOO
023678,000329: 36,2370 51406 PUSH ABS
023679,000330: 36,2371 50025 DSU BMN
023680,000331: 36,2372 33144 LIMVEL # 2 FT PS
023681,000332: 36,2373 74427 ENDEN
023682,000333: 36,2374 45345 DLOAD DSU
023683,000334: 36,2375 02321 HPERMIN
023684,000335: 36,2376 02631 HPO
023685,000336: 36,2377 77725 PDDL
023686,000337: 36,2400 71240 BMN DLOAD
023687,000338: 36,2401 74410 LRGRDVO
023688,000339: 36,2402 71244 BPL DLOAD
023689,000340: 36,2403 74344 INTERP
023690,000341: 36,2404 03744 DELTEE
023691,000342: 36,2405 57542 SR1 DCOMP
023692,000343: 36,2406 37744 STCALL DELTEE
023693,000344: 36,2407 74337 JUNCT2
023694,000345: 36,2410 77745 LRGRDVO DLOAD
023695,000346: 36,2411 71240 BMN DLOAD
023696,000347: 36,2412 74337 JUNCT2
023697,000348: 36,2413 33132 CLSEC
023698,000349: 36,2414 77650 GOTO
023699,000350: 36,2415 74333 JUNCT1
023700,000351: # TIME RAN OUT ASSUME SOLUTION IF SAFE PERICENTER
023701,000352: 36,2416 45345 RNGETEST DLOAD DSU
023702,000353: 36,2417 02625 HP
023703,000354: 36,2420 02321 HPERMIN
023704,000355: 36,2421 71240 BMN DLOAD
023705,000356: 36,2422 73254 ALARUMS
023706,000357: 36,2423 03752 TF
023707,000358: 36,2424 77625 DSU
023708,000359: 36,2425 03744 DELTEE
023709,000360: 36,2426 03752 STORE TF # TIME OF SOLUTION
023710,000361: 36,2427 77775 ENDEN VLOAD
023711,000362: 36,2430 03620 VTPRIME
023712,000363: 36,2431 65241 DOT PDDL # SG2 WITH MAGNITUDE
023713,000364: 36,2432 03632 RPASS4
023714,000365: 36,2433 02637 RELDELV
023715,000366: 36,2434 45565 SIGN STADR # NOW SIGN(RELDELV)=SIGN(SG2)
023716,000367: 36,2435 41140 STCALL RELDELV
023717,000368: 36,2436 16441 TRANSANG # COMPUTE OMEGA T, CENTRAL ANGLE
023718,000369: 36,2437 50375 VLOAD DOT
023719,000370: 36,2440 03540 RACT3
023720,000371: 36,2441 03612 VIPRIME # SG1
023721,000372: 36,2442 51165 SIGN BPL # IF POSITIVE THEN SG1 = SG2 OTHERWISE
023722,000373: 36,2443 02637 RELDELV
023723,000374: 36,2444 74454 USEKAY # SIGN(SG2-SG1)=SIGN(SG2)=SIGN(RELDELV)
023724,000375: 36,2445 57535 SLOAD DCOMP
023725,000376: 36,2446 33117 DECTWO
023726,000377: 36,2447 51165 SIGN BPL
023727,000378: 36,2450 02637 RELDELV
023728,000379: 36,2451 74462 NEXUS
023729,000380: 36,2452 52076 DCOMP GOTO
023730,000381: 36,2453 74460 USEKAY +4
023731,000382: 36,2454 43135 USEKAY SLOAD BON
023732,000383: 36,2455 33117 DECTWO
023733,000384: 36,2456 00316 KFLAG
023734,000385: 36,2457 74462 NEXUS
023735,000386: 36,2460 77625 DSU
023736,000387: 36,2461 36157 P21ONENN
023737,000388: 36,2462 17766 NEXUS STODL NN1
023738,000389: 36,2463 02625 HP
023739,000390: 36,2464 36641 STCALL POSTTPI
023740,000391: 36,2465 03657 QTEMP
023741,000392: 07,2441 BANK 07
023742,000393: 07,2000 SETLOC XANG
023743,000394: 07,2000 BANK
023744,000395: 07,2441 COUNT 07/XANG
023745,000396:
023746,000397: # CENTRAL ANGLE SUBROUTINE
023747,000398:
023748,000399: # THIS SUBROUTINE COMPUTES THE CENTRAL ANGLE OF TRAVEL OF THE
023749,000400: # PASSIVE VEHICLE DURING THE TRANSFER.
023750,000401:
023751,000402: 07,2441 40220 TRANSANG STQ SETPD
023752,000403: 07,2442 02370 SUBEXIT
023753,000404: 07,2443 00001 0
023754,000405: 07,2444 73150 LXA,1 LXA,2
023755,000406: 07,2445 03745 XRS
023756,000407: 07,2446 03746 XRS +1
023757,000408: 07,2447 53775 VLOAD VSR*
023758,000409: 07,2450 03640 VPASS4
023759,000410: 07,2451 57176 0,2
023760,000411: 07,2452 22746 STODL* VVEC
023761,000412: 07,2453 11742 MUTABLE +2,1
023762,000413: 07,2454 53715 PDVL VSR* # SQRT MU (+18 OR +15) 00D
023763,000414: 07,2455 03632 RPASS4
023764,000415: 07,2456 57176 0,2
023765,000416: 07,2457 64646 ABVAL PDDL* # MAGNITUDE OF R (+29 OR +27) 02D
023766,000417: 07,2460 11740 MUTABLE,1
023767,000418: 07,2461 47515 PDVL VSQ # 1/MU (+34 OR +28) 04D
023768,000419: 07,2462 02746 VVEC
023769,000420: 07,2463 57301 NORM DMPR # PUSH LIST AT 02D
023770,000421: 07,2464 00047 X1
023771,000422: 07,2465 53605 DMP SRR*
023772,000423: 07,2466 00003 02D
023773,000424: 07,2467 21576 0 -3,1
023774,000425: 07,2470 77621 BDSU # R V**/MU (+6)
023775,000426: 07,2471 11616 D1/32
023776,000427: 07,2472 65301 NORM PDDL
023777,000428: 07,2473 00047 X1 # (2 - R V**/MU) (+6-N)
023778,000429: 07,2474 56362 SR1R DDV # MAGNITUDE OF R (+30 OR +28)
023779,000430: 07,2475 41457 SL* PUSH # R/(2 - R V**/MU) (+29 OR +27) 02D
023780,000431: 07,2476 20174 0 -5,1
023781,000432: 07,2477 75542 SR1 SQRT
023782,000433: 07,2500 77605 DMP
023783,000434: 07,2501 65301 NORM PDDL # ASUBP*** 00D
023784,000435: 07,2502 00047 X1
023785,000436: 07,2503 56342 SR1 DDV
023786,000437: 07,2504 53605 DMP SL*
023787,000438: 07,2505 03752 TF
023788,000439: 07,2506 20201 0,1
023789,000440: 07,2507 60325 PDDL NORM
023790,000441: 07,2510 11630 2PISC
023791,000442: 07,2511 00047 X1
023792,000443: 07,2512 56325 PDDL DDV
023793,000444: 07,2513 77657 SL*
023794,000445: 07,2514 20176 0 -3,1 # CENTANG = (SQRT(MU/ASUP***)TF)
023795,000446: 07,2515 37754 STCALL CENTANG # IN REVOLUTIONS B-0
023796,000447: 07,2516 02370 SUBEXIT
023797,000448: 35,3151 BANK 35
023798,000449: 35,2000 SETLOC P17S1
023799,000450: 35,2000 BANK
023800,000451: 35,3151 COUNT 35/P17
023801,000452:
023802,000453: # TPI SEARCH DISPLAY ROUTINE
023803,000454:
023804,000455: 35,3151 04627 P17 TC AVFLAGA # AVFLAG = CSM, SET TRACK + UPDATE FLAGS
023805,000456: 35,3152 03154 TC P17.1
023806,000457: 35,3153 04642 P77 TC AVFLAGP # AVFLAG = LEM, SET TRACK + UPDATE FLAGS
023807,000458: 35,3154 04647 P17.1 TC P20FLGON # SET UPDATE FLAG
023808,000459: 35,3155 34614 CAF V06N37 # DISPLAY TTPI TIME
023809,000460: 35,3156 04575 TC VNPOOH
023810,000461: 35,3157 06006 TC INTPRET
023811,000462: 35,3160 45014 CLEAR CALL
023812,000463: 35,3161 00670 UPDATFLG
023813,000464: 35,3162 74012 S17.1 # UPDATE STATE VECTORS TO TTPI
023814,000465: 35,3163 76014 SET AXT,1
023815,000466: 35,3164 00470 UPDATFLG
023816,000467: 35,3165 00002 DEC 2 B-14 # DELTA H = 2 K POSITIVE, KFLAG OFF
023817,000468: 35,3166 76014 BOFF AXT,1
023818,000469: 35,3167 00356 KFLAG
023819,000470: 35,3170 73172 +2
023820,000471: 35,3171 00001 DEC 1 B-14 # DELTA H = 1 K NEGATIVE, KFLAG ON
023821,000472: 35,3172 77530 SXA,1 EXIT
023822,000473: 35,3173 01132 OPTION2
023823,000474: 35,3174 33263 CAF V06N72 # DISPLAY PHI, DELTA H, SEARCH OPTION K
023824,000475: 35,3175 03237 TC VNCOMP17
023825,000476: 35,3176 06006 TC INTPRET
023826,000477: 35,3177 43014 CLEAR SET
023827,000478: 35,3200 00670 UPDATFLG
023828,000479: 35,3201 00076 KFLAG
023829,000480: 35,3202 45335 SLOAD DSU
023830,000481: 35,3203 01133 OPTION2 # RESET KFLAG ON FOR OPTION =1
023831,000482: 35,3204 36157 P21ONENN # OFF FOR OPTION =2
023832,000483: 35,3205 43030 BHIZ CLEAR
023833,000484: 35,3206 73210 +2
023834,000485: 35,3207 00276 KFLAG
023835,000486: 35,3210 46135 SLOAD BHIZ
023836,000487: 35,3211 03747 XRS +1
023837,000488: 35,3212 73216 +4
023838,000489: 35,3213 52145 DLOAD GOTO
023839,000490: 35,3214 33126 HPL
023840,000491: 35,3215 73220 P17.2
023841,000492: 35,3216 77745 DLOAD
023842,000493: 35,3217 33124 HPE
023843,000494: 35,3220 36321 P17.2 STCALL HPERMIN
023844,000495: 35,3221 74070 S17.2
023845,000496: 35,3222 77414 SET EXIT
023846,000497: 35,3223 00470 UPDATFLG
023847,000498: 35,3224 34616 P17.3 CAF V06N58 # DISPLAY DELTA VTPI, DELTA VTPF, AND H
023848,000499: 35,3225 03237 TC VNCOMP17
023849,000500: 35,3226 34615 CAF V06N55 # DISPLAY PERICENTER CODE AND CENTRAL ANG,
023850,000501: 35,3227 04676 TC BANKCALL
023851,000502: 35,3230 21057 CADR GOFLASHR
023852,000503: 35,3231 04106 TC GOTOPOOH # TERMINATE PROGRAM
023853,000504: 35,3232 04106 TC GOTOPOOH # END PROGRAM
023854,000505: 35,3233 03154 TC P17.1 # RECYCLE WITH NEW TTPI OR SEARCH OPTION
023855,000506: 35,3234 35032 CAF TWO # BLANK R2
023856,000507: 35,3235 05542 TC BLANKET
023857,000508: 35,3236 15233 TCF ENDOFJOB
023858,000509: 35,3237 E4,1767 EBANK= RTRN
023859,000510:
023860,000511: 35,3237 00006 VNCOMP17 EXTEND
023861,000512: 35,3240 23766 QXCH QSAVED
023862,000513: 35,3241 55765 TS VERBNOUN
023863,000514: 35,3242 31765 CA VERBNOUN
023864,000515: 35,3243 04676 TCR BANKCALL
023865,000516: 35,3244 20720 CADR GOFLASH
023866,000517: 35,3245 04106 TC GOTOPOOH # TERMINATE PROGRAM
023867,000518: 35,3246 01766 TC QSAVED # PROCEED
023868,000519: 35,3247 40154 CS MPAC # RECYCLE WITH NEW TPI TIME
023869,000520: 35,3250 65026 AD BIT6 # OR PROCEED WITH NEW SEARCH OPTION
023870,000521: 35,3251 00006 EXTEND
023871,000522: 35,3252 13154 BZF P17.1
023872,000523: 35,3253 03242 TC VNCOMP17 +3
023873,000524: 35,3254 77414 ALARUMS SET EXIT
023874,000525: 35,3255 00470 UPDATFLG
023875,000526: 35,3256 05664 TC ALARM
023876,000527: 35,3257 00124 OCT 00124 # NO SAFE PERCENTER IN THIS SECTOR
023877,000528: 35,3260 35064 CAF V05N09
023878,000529: 35,3261 03237 TC VNCOMP17
023879,000530: 35,3262 04106 TC GOTOPOOH # PROCEED ILLEGAL TERMINATE PROGRAM
023880,000531: 35,3263 01510 V06N72 VN 0672
023881,000532:
End of include-file TPI_SEARCH.agc. Parent file is MAIN.agc