Source Code
![]() |
These source-code files were derived from scans of the
Colossus 237 (Apollo 8 Command Module) program listing from the private collection of original
AGC developer Fred Martin. Scanning was by Ron Burkey. Pre-existing Colossus 249
(Apollo 9 CM) source files were used as a template, and changes between Colossus 249
and Colossus 237 were manually transcribed by a team of volunteers. Note
that the page images
presented online are of reduced quality, and that additional images
are available. Report any conversion errors or legibility
problems in page images to info@sandroid.org.
Notations on the program listing read, in part:GAP: ASSEMBLE REVISION 237 OF AGC PROGRAM COLOSSUS BY NASA 2021111-031 1:17 AUG. 24, 1968Note that the date is the date of the printout, not the date of the program revision. |
023561,000002: ## Copyright: Public domain.
023562,000003: ## Filename: TPI_SEARCH.agc
023563,000004: ## Purpose: Part of the source code for Colossus build 237.
023564,000005: ## This is for the Command Module's (CM) Apollo Guidance
023565,000006: ## Computer (AGC), for Apollo 8.
023566,000007: ## Assembler: yaYUL
023567,000008: ## Contact: Jim Lawton <jim DOT lawton AT gmail DOT com>
023568,000009: ## Website: www.ibiblio.org/apollo/index.html
023569,000010: ## Page Scans: www.ibiblio.org/apollo/ScansForConversion/Colossus237/
023570,000011: ## Mod history: 2011-02-14 JL Adapted from corresponding Colossus 249 file.
023571,000012: ## 2016-12-31 RSB Proofed comment text using octopus/ProoferComments,
023572,000013: ## and corrected errors found.
023573,000014:
![]() |
Page 539 |
023575,000016: # PROGRAM DESCRIPTION S17.1 AND S17.2
023576,000017:
023577,000018: # FUNCTIONAL DESCRIPTION
023578,000019:
023579,000020: # THE TPI SEARCH ROUTINE DETERMINES THE MINIMUM TOTAL VELOCITY TRANSFER TRAJECTORY FROM A GIVEN TPI
023580,000021: # MANEUVER TIME WITHIN THE CONSTRAINT OF A SAFE PERICENTER. THIS VELOCITY IS THE SUM OF THE IMPULSIVE VELOCITIES
023581,000022: # FOR THE TPI AND TPF MANEUVERS.
023582,000023: # THE S17.1 ROUTINE EXTRAPOLATES THE STATE VECTORS OF BOTH VEHICLES TO THE TPI TIME AND COMPUTES THE
023583,000024: # RELATIVE PHASE ANGLE BETWEEN THE VEHICLES, THE ALTITUDE DIFFERENCE(I.E. THE MAGNITUDE DIFFERENCE OF THE
023584,000025: # POSITION VECTORS) AND SELECTS A SEARCH SECTOR BASED ON THE SIGN OF THE ALTITUDE DIFFERENCE.
023585,000026: # THE S17.2 ROUTINE FURTHER DEFINES THE SEARCH SECTOR BY COMPUTING ANGULAR LIMITS AND USES THE TIME THETA
023586,000027: # SUBROUTINE TO COMPUTE THE SEARCH START AND END TIMES. THE SEARCH IS THEN MADE IN AN ITERATIVE LOOP USING THE
023587,000028: # LAMBERT SUBROUTINE TO COMPUTE THE VELOCITIES REQUIRED AT TPI TIME AND AT TPF TIME. EXIT FROM THE SEARCH LOOP
023588,000029: # IS MADE WHEN SOLUTION CRITERIA ARE MET (NORMAL EXIT) OR AS SOON AS IT IS EVIDENT THAT NO SOLUTION EXISTS IN
023589,000030: # THE SECTOR SEARCHED.
023590,000031:
023591,000032: # CALLING SEQUENCE
023592,000033:
023593,000034: # BOTH ROUTINES ARE CALLED IN INTERPRETIVE CODE AND RETURN VIA QPRET. S17.1 HAS ONLY A NORMAL EXIT.
023594,000035: # S17.2 RETURNS VIA QPRET FOR NORMAL EXIT AND TO ALARUMS FOR ERROR EXIT.
023595,000036: # SUBROUTINES CALLED
023596,000037:
023597,000038: # CSMCONIC
023598,000039: # LEMCONIC
023599,000040: # TIMETHET
023600,000041: # INITVEL
023601,000042:
023602,000043: 36,2000 BANK 36
023603,000044: 36,2000 SETLOC P17S
023604,000045: 36,2000 BANK
023605,000046:
023606,000047: 36,2000 COUNT 36/TPI
023607,000048:
023608,000049: 36,2000 E7,1537 EBANK= RACT3
023609,000050:
023610,000051: # **** TEMPORARY ****
023611,000052:
023612,000053: 36,2000 00004 31566 HPE 2DEC 157420.0 B-29 # EARTH'S MIN. PERICENTER ALTITUDE 85 N.M.
023613,000054:
023614,000055: 36,2002 00000 12326 HPL 2DEC 10668.0213 B-29 # MOON:S MIN. PERICENTER ALTITUDE 35000FT
023615,000056: 36,2004 00002 16100 CDSEC 2DEC 40000 B-28
023616,000057: 36,2006 00000 35230 CLSEC 2DEC 15000 B-28
023617,000058: 36,2010 12137 06033 PIINVERS 2DEC .3183098862
023618,000059: 36,2012 06161 30707 SEC1THET 2DEC .1944444444
![]() |
Page 540 |
023620,000061: 36,2014 35252 25253 SEC2THET 2DEC .9166666667
023621,000062: 36,2016 67777 77777 MANYFEET 2DEC -1.0 B-2
023622,000063: 36,2020 00000 30760 LIMVEL 2DEC .6096 E-2 B-7 # 2FPS
023623,000064: 36,2022 00000 00114 DFTMOON 2DEC .1524 E3 B-29 # 500 FEET
023624,000065: 36,2024 00040 30447 DP-.002 2DEC 0.002
023625,000066: 36,2026 71220 S17.1 STQ DLOAD
023626,000067: 36,2027 01340 NORMEX
023627,000068: 36,2030 03663 TTPI
023628,000069: 36,2031 34041 STCALL TDEC1 # ADVANCE PASSIVE VEHICLE TO TPI
023629,000070: 36,2032 27057 LEMCONIC
023630,000071: 36,2033 77624 CALL
023631,000072: 36,2034 45372 LEMSTORE
023632,000073: 36,2035 77745 DLOAD
023633,000074: 36,2036 03663 TTPI
023634,000075: 36,2037 34041 STCALL TDEC1 # ADVANCE ACTIVE VEHICLE TO TPI
023635,000076: 36,2040 27045 CSMCONIC
023636,000077: 36,2041 77624 CALL
023637,000078: 36,2042 45402 CSMSTORE
023638,000079: 36,2043 77775 VLOAD
023639,000080: 36,2044 03540 RACT3
023640,000081: 36,2045 63246 ABVAL PDVL # /RA/ 0D PL 2D
023641,000082: 36,2046 03554 RPASS3
023642,000083: 36,2047 65256 UNIT PDDL # UNIT RP 0D PL 6D
023643,000084: 36,2050 43021 BDSU SET
023644,000085: 36,2051 00045 36D # /RP/ -/RA/
023645,000086: 36,2052 00076 KFLAG # OFF = +
023646,000087: 36,2053 43040 BMN CLEAR
023647,000088: 36,2054 74056 +2
023648,000089: 36,2055 00276 KFLAG # ON = -
023649,000090: 36,2056 27754 STOVL DELHITE
023650,000091: 36,2057 00001 0D
023651,000092: 36,2060 53435 VXV UNIT
023652,000093: 36,2061 03562 VPASS3
023653,000094: 36,2062 27646 STOVL E2 # ALMOST IT SAVE FOR 17.2
023654,000095: 36,2063 03540 RACT3
023655,000096: 36,2064 46206 PUSH VPROJ
023656,000097: 36,2065 03646 E2
023657,000098: 36,2066 51352 VSL2 BVSU # RPA
023658,000099: 36,2067 50256 UNIT DOT
023659,000100: 36,2070 00001 0D
023660,000101: 36,2071 65552 SL1 ACOS
023661,000102: 36,2072 77715 PDVL
023662,000103: 36,2073 50235 VXV DOT
023663,000104: 36,2074 03540 RACT3
023664,000105: 36,2075 03646 E2
![]() |
Page 541 |
023666,000107: 36,2076 75325 PDDL SIGN
023667,000108: 36,2077 77626 STADR
023668,000109: 36,2100 61160 STODL THETZERO # CENTRAL ANGLE
023669,000110: 36,2101 00047 X1
023670,000111: 36,2102 37746 STCALL XRS # SAVE INDICES FOR FURTHER USE
023671,000112: 36,2103 01340 NORMEX # += ACTIVE AHEAD -= ACTIVE BEHIND
023672,000113: 36,2104 77220 S17.2 STQ VLOAD # COMPUTE SEARCH SECTOR LIMITS
023673,000114: 36,2105 03657 QTEMP
023674,000115: 36,2106 03540 RACT3
023675,000116: 36,2107 50256 UNIT DOT
023676,000117: 36,2110 03646 E2
023677,000118: 36,2111 75446 ABS SQRT
023678,000119: 36,2112 43352 SL1 DAD
023679,000120: 36,2113 34025 DP-.002 # ADD .002 RADIANS TO IT
023680,000121: 36,2114 57414 BON DCOMP # GIVES CORRECT SINE, COSINE MUST BE
023681,000122: 36,2115 00316 KFLAG # COMP. ADD .5 FOR ANGLE
023682,000123: 36,2116 74117 +1
023683,000124: # PHI(0)=180-(-(THETAZERO +K5IT)), PHI(I)=180-(-(THETAZERO+K2IT))
023684,000125: # SIN(180-ALPHA)=SIN(ALPHA) ETC
023685,000126: 36,2117 40205 DMP SETPD
023686,000127: 36,2120 34011 PIINVERS # REVOLUTIONARY HERES TWO IT
023687,000128: 36,2121 00001 0D
023688,000129: 36,2122 45206 PUSH DSU
023689,000130: 36,2123 02617 THETZERO
023690,000131: 36,2124 02611 STORE IT # PHI(I) , -(THETZERO + K2IT)
023691,000132: 36,2125 41525 PDDL PUSH
023692,000133: 36,2126 43342 SR1 DAD
023693,000134: 36,2127 41415 DAD PUSH # PHI(0) , -(THETZERO + K5IT)
023694,000135: 36,2130 43156 SIN SET
023695,000136: 36,2131 03466 RVSW
023696,000137: 36,2132 16732 STODL SNTH
023697,000138: 36,2133 50146 COS BMN
023698,000139: 36,2134 74136 +2
023699,000140: 36,2135 77676 DCOMP
023700,000141: 36,2136 16734 STODL CSTH
023701,000142: 36,2137 03746 XRS
023702,000143: 36,2140 24047 STOVL X1
023703,000144: 36,2141 03554 RPASS3
023704,000145: 36,2142 77657 VSR*
023705,000146: 36,2143 57176 0,2
023706,000147: 36,2144 26657 STOVL RVEC
023707,000148: 36,2145 03562 VPASS3
023708,000149: 36,2146 77657 VSR*
023709,000150: 36,2147 57176 0,2
023710,000151: 36,2150 36746 STCALL VVEC
023711,000152: 36,2151 24737 TIMETHET
023712,000153: 36,2152 77745 DLOAD # SAVE START TIME AND GET END TIME
023713,000154: 36,2153 00037 T
023714,000155: 36,2154 03752 STORE TF
023715,000156: 36,2155 16627 STODL TFO
![]() |
Page 542 |
023717,000158: 36,2156 02611 IT
023718,000159: 36,2157 73406 PUSH SIN
023719,000160: 36,2160 16732 STODL SNTH
023720,000161: 36,2161 50146 COS BMN
023721,000162: 36,2162 74164 +2
023722,000163: 36,2163 77676 DCOMP
023723,000164: 36,2164 02734 STORE CSTH
023724,000165: 36,2165 45150 LXA,1 CALL
023725,000166: 36,2166 03745 XRS
023726,000167: 36,2167 24737 TIMETHET
023727,000168: # INITIALIZE LOOP
023728,000169: 36,2170 43145 DLOAD CLEAR
023729,000170: 36,2171 00037 T
023730,000171: 36,2172 03661 ITSWICH
023731,000172: 36,2173 16621 STODL TFI # SAVE TIME FOR LOOP TEST
023732,000173: 36,2174 15340 DPPOSMAX
023733,000174: 36,2175 16623 STODL DELVEE
023734,000175: 36,2176 34017 MANYFEET
023735,000176: 36,2177 16625 STODL HP
023736,000177: 36,2200 34013 SEC1THET # 70 DEGREES
023737,000178: 36,2201 71214 BON DLOAD
023738,000179: 36,2202 00316 KFLAG
023739,000180: 36,2203 74205 +2
023740,000181: 36,2204 34015 SEC2THET # 330 DEGREES
023741,000182: 36,2205 37750 STCALL THETL
023742,000183: 36,2206 74230 CONCAUL
023743,000184: 36,2207 70545 BIS DLOAD SR1
023744,000185: 36,2210 02734 CSTH
023745,000186: 36,2211 14021 STODL COSTH
023746,000187: 36,2212 02732 SNTH
023747,000188: 36,2213 77742 SR1
023748,000189: 36,2214 34023 STCALL SINTH # GET 4 QUADRANT THETA
023749,000190: 36,2215 47211 ARCTRIG
023750,000191: 36,2216 43244 BPL DAD
023751,000192: 36,2217 74221 +2
023752,000193: 36,2220 15340 DPPOSMAX # PUT THETA BETWEEN 0,1
023753,000194: 36,2221 65221 BDSU PDDL
023754,000195: 36,2222 03750 THETL
023755,000196: 36,2223 03752 TF
023756,000197: 36,2224 75225 DSU SIGN # FAST TIMES
023757,000198: 36,2225 02621 TFI
023758,000199: 36,2226 77640 BMN
023759,000200: 36,2227 74432 RNGETEST # TIME MUST HAVE A STOP
023760,000201: # ADVANCE PASSIVE FOR TARGET VECTOR
023761,000202: 36,2230 77745 CONCAUL DLOAD
023762,000203: 36,2231 03663 TTPI
023763,000204: 36,2232 43015 DAD BON
023764,000205: 36,2233 03752 TF
023765,000206: 36,2234 01312 AVFLAG
023766,000207: 36,2235 74242 ADVCSM
![]() |
Page 543 |
023768,000209: 36,2236 34041 STCALL TDEC1
023769,000210: 36,2237 27057 LEMCONIC
023770,000211: 36,2240 77650 GOTO
023771,000212: 36,2241 74244 JUNCT3
023772,000213: 36,2242 34041 ADVCSM STCALL TDEC1
023773,000214: 36,2243 27045 CSMCONIC
023774,000215: # SAVE BACK VALUES OF HP AND DELVEE
023775,000216: 36,2244 77775 JUNCT3 VLOAD
023776,000217: 36,2245 00007 VATT
023777,000218: 36,2246 27640 STOVL VPASS4
023778,000219: 36,2247 00001 RATT
023779,000220: 36,2250 03632 STORE RPASS4
023780,000221: 36,2251 17415 STODL RTARG
023781,000222: 36,2252 03752 TF
023782,000223: 36,2253 17423 STODL DELLT4
023783,000224: 36,2254 02625 HP
023784,000225: 36,2255 16631 STODL HPO
023785,000226: 36,2256 02623 DELVEE
023786,000227: 36,2257 16633 STODL DELVEO
023787,000228: # PREPARE FOR LAMBERT
023788,000229: 36,2260 03663 TTPI
023789,000230: 36,2261 17503 STODL INTIME
023790,000231: 36,2262 03746 XRS
023791,000232: 36,2263 17746 STODL RTX1
023792,000233: 36,2264 15332 HI6ZEROS
023793,000234: 36,2265 65201 SETPD PDDL
023794,000235: 36,2266 00001 0D
023795,000236: 36,2267 33147 EPSFOUR
023796,000237: 36,2270 77715 PDVL
023797,000238: 36,2271 03540 RACT3
023798,000239: 36,2272 27570 STOVL RINIT
023799,000240: 36,2273 03546 VACT3
023800,000241: 36,2274 37576 STCALL VINIT
023801,000242: 36,2275 22000 INITVEL
023802,000243: # COMPUTE H ET CETERA
023803,000244: 36,2276 52375 VLOAD VSU
023804,000245: 36,2277 03620 VTPRIME
023805,000246: 36,2300 03640 VPASS4
023806,000247: 36,2301 41446 ABVAL PUSH
023807,000248: 36,2302 26637 STOVL RELDELV # /V2-VP(TPI+TF)/
023808,000249: 36,2303 03646 DELVEET3 # V1-VA
023809,000250: 36,2304 77646 ABVAL # /V1-VA/
023810,000251: 36,2305 02635 STORE MAGVTPI
023811,000252: 36,2306 45415 DAD STADR
023812,000253: 36,2307 61154 STODL DELVEE
023813,000254: 36,2310 03746 XRS
023814,000255: 36,2311 24047 STOVL X1
023815,000256: 36,2312 03612 VIPRIME
023816,000257: 36,2313 77657 VSR*
023817,000258: 36,2314 57176 0,2
![]() |
Page 544 |
023819,000260: 36,2315 26746 STOVL VVEC
023820,000261: 36,2316 03540 RACT3
023821,000262: 36,2317 77657 VSR*
023822,000263: 36,2320 57176 0,2
023823,000264: 36,2321 36657 STCALL RVEC
023824,000265: 36,2322 45322 PERIAPO
023825,000266: 36,2323 71354 LXA,2 DLOAD
023826,000267: 36,2324 03746 XRS +1
023827,000268: 36,2325 77657 SL*
023828,000269: 36,2326 57576 0,2
023829,000270: 36,2327 02625 STORE HP
023830,000271: # ITSWICH DENOTES INTERPOLATION--SOLUTION ACCEPTANCE IS FORCED
023831,000272: 36,2330 71214 BON DLOAD
023832,000273: 36,2331 03701 ITSWICH
023833,000274: 36,2332 74443 ENDEN
023834,000275: 36,2333 02321 HPERMIN
023835,000276: 36,2334 50025 DSU BMN
023836,000277: 36,2335 02625 HP
023837,000278: 36,2336 74401 HALFSAFE
023838,000279: 36,2337 45325 PDDL DSU # WAS PERICENTER ALT SAFE
023839,000280: 36,2340 02321 HPERMIN
023840,000281: 36,2341 02631 HPO
023841,000282: 36,2342 45240 BMN DSU # (HPLIM-HPO)-(HPLIM-HP)=HP-HPO
023842,000283: 36,2343 74360 INTERP # SOLUTION AT HAND
023843,000284: 36,2344 71240 BMN DLOAD
023844,000285: 36,2345 73534 ALARUMS # ITS GETTING WORSE - SOUND THE ALARM
023845,000286: 36,2346 34005 CDSEC
023846,000287: 36,2347 57414 JUNCT1 BOFF DCOMP # OFF IS PLUS ON IS MINUS
023847,000288: 36,2350 00356 KFLAG
023848,000289: 36,2351 74352 +1
023849,000290: 36,2352 03744 STORE DELTEE
023850,000291: 36,2353 43345 JUNCT2 DLOAD DAD
023851,000292: 36,2354 03744 DELTEE
023852,000293: 36,2355 03752 TF
023853,000294: 36,2356 37752 STCALL TF
023854,000295: 36,2357 74207 BIS # RECYCLE
023855,000296: 36,2360 45214 INTERP SET DSU # HP-HPO
023856,000297: 36,2361 03461 ITSWICH
023857,000298: 36,2362 65301 NORM PDDL
023858,000299: 36,2363 00047 X1
023859,000300: 36,2364 34023 DFTMOON
023860,000301: 36,2365 45215 DAD DSU
023861,000302: 36,2366 02321 HPERMIN
023862,000303: 36,2367 02625 HP
023863,000304: 36,2370 70501 NORM SR1
023864,000305: 36,2371 00050 X2
023865,000306: 36,2372 56264 XSU,2 DDV
023866,000307: 36,2373 00046 X1
023867,000308: 36,2374 53605 DMP SR*
023868,000309: 36,2375 03744 DELTEE
![]() |
Page 545 |
023870,000311: 36,2376 57177 0 -1,2
023871,000312: 36,2377 37744 STCALL DELTEE
023872,000313: 36,2400 74353 JUNCT2
023873,000314: 36,2401 45325 HALFSAFE PDDL DSU # SAVE HP-HPLIM FOR POSSIBLE
023874,000315: 36,2402 02623 DELVEE
023875,000316: 36,2403 02633 DELVEO # SAVE THIS TOO
023876,000317: 36,2404 51406 PUSH ABS
023877,000318: 36,2405 50025 DSU BMN
023878,000319: 36,2406 34021 LIMVEL # 2 FT PS
023879,000320: 36,2407 74443 ENDEN
023880,000321: 36,2410 45345 DLOAD DSU
023881,000322: 36,2411 02321 HPERMIN
023882,000323: 36,2412 02631 HPO
023883,000324: 36,2413 77725 PDDL
023884,000325: 36,2414 71240 BMN DLOAD
023885,000326: 36,2415 74424 LRGRDVO
023886,000327: 36,2416 71244 BPL DLOAD
023887,000328: 36,2417 74360 INTERP
023888,000329: 36,2420 03744 DELTEE
023889,000330: 36,2421 57542 SR1 DCOMP
023890,000331: 36,2422 37744 STCALL DELTEE
023891,000332: 36,2423 74353 JUNCT2
023892,000333: 36,2424 77745 LRGRDVO DLOAD
023893,000334: 36,2425 71240 BMN DLOAD
023894,000335: 36,2426 74353 JUNCT2
023895,000336: 36,2427 34007 CLSEC
023896,000337: 36,2430 77650 GOTO
023897,000338: 36,2431 74347 JUNCT1
023898,000339: # TIME RAN OUT ASSUME SOLUTION IF SAFE PERICENTER
023899,000340: 36,2432 45345 RNGETEST DLOAD DSU
023900,000341: 36,2433 02625 HP
023901,000342: 36,2434 02321 HPERMIN
023902,000343: 36,2435 71240 BMN DLOAD
023903,000344: 36,2436 73534 ALARUMS
023904,000345: 36,2437 03752 TF
023905,000346: 36,2440 77625 DSU
023906,000347: 36,2441 03744 DELTEE
023907,000348: 36,2442 03752 STORE TF # TIME OF SOLUTION
023908,000349: 36,2443 77775 ENDEN VLOAD
023909,000350: 36,2444 03620 VTPRIME
023910,000351: 36,2445 65241 DOT PDDL # SG2 WITH MAGNITUDE
023911,000352: 36,2446 03632 RPASS4
023912,000353: 36,2447 02637 RELDELV
023913,000354: 36,2450 45565 SIGN STADR # NOW SIGN(RELDELV)=SIGN(SG2)
023914,000355: 36,2451 41140 STCALL RELDELV
023915,000356: 36,2452 16440 TRANSANG # COMPUTE OMEGA T , CENTRAL ANGLE
023916,000357: 36,2453 50375 VLOAD DOT
023917,000358: 36,2454 03540 RACT3
023918,000359: 36,2455 03612 VIPRIME # SG1
023919,000360: 36,2456 51165 SIGN BPL # IF POSITIVE THEN SG1 = SG2 OTHERWISE
![]() |
Page 546 |
023921,000362: 36,2457 02637 RELDELV
023922,000363: 36,2460 74470 USEKAY # SIGN(SG2-SG1)=SIGN(SG2)=SIGN(RELDELV)
023923,000364: 36,2461 57535 SLOAD DCOMP
023924,000365: 36,2462 33144 DECTWO
023925,000366: 36,2463 51165 SIGN BPL
023926,000367: 36,2464 02637 RELDELV
023927,000368: 36,2465 74476 NEXUS
023928,000369: 36,2466 52076 DCOMP GOTO
023929,000370: 36,2467 74474 USEKAY +4
023930,000371: 36,2470 43135 USEKAY SLOAD BON
023931,000372: 36,2471 33144 DECTWO
023932,000373: 36,2472 00316 KFLAG
023933,000374: 36,2473 74476 NEXUS
023934,000375: 36,2474 77625 DSU
023935,000376: 36,2475 36100 P21ONENN
023936,000377: 36,2476 17646 NEXUS STODL NN1
023937,000378: 36,2477 02625 HP
023938,000379: 36,2500 36641 STCALL POSTTPI
023939,000380: 36,2501 03657 QTEMP
023940,000381: 07,2440 BANK 07
023941,000382: 07,2000 SETLOC XANG
023942,000383: 07,2000 BANK
023943,000384: 07,2440 COUNT 07/XANG
023944,000385:
023945,000386: # CENTRAL ANGLE SUBROUTINE
023946,000387: # THIS SUBROUTINE COMPUTES THE CENTRAL ANGLE OF TRAVEL OF THE
023947,000388: # PASSIVE VEHICLE DURING THE TRANSFER.
023948,000389:
023949,000390: 07,2440 40220 TRANSANG STQ SETPD
023950,000391: 07,2441 02370 SUBEXIT
023951,000392: 07,2442 00001 0
023952,000393: 07,2443 73150 LXA,1 LXA,2
023953,000394: 07,2444 03745 XRS
023954,000395: 07,2445 03746 XRS +1
023955,000396: 07,2446 53775 VLOAD VSR*
023956,000397: 07,2447 03640 VPASS4
023957,000398: 07,2450 57176 0,2
023958,000399: 07,2451 22746 STODL* VVEC
023959,000400: 07,2452 11630 MUTABLE +2,1
023960,000401: 07,2453 53715 PDVL VSR* # SQRT MU (+18 OR +15) 00D
023961,000402: 07,2454 03632 RPASS4
023962,000403: 07,2455 57176 0,2
023963,000404: 07,2456 64646 ABVAL PDDL* # MAGNITUDE OF R (+29 OR +27) 02D
023964,000405: 07,2457 11626 MUTABLE,1
023965,000406: 07,2460 47515 PDVL VSQ # 1/MU (+34 OR +28) 04D
023966,000407: 07,2461 02746 VVEC
023967,000408: 07,2462 57301 NORM DMPR # PUSH LIST AT 02D
023968,000409: 07,2463 00047 X1
023969,000410: 07,2464 53605 DMP SRR*
023970,000411: 07,2465 00003 02D
![]() |
Page 547 |
023972,000413: 07,2466 21576 0 -3,1
023973,000414: 07,2467 77621 BDSU # R V**/MU (+6)
023974,000415: 07,2470 11503 D1/32
023975,000416: 07,2471 65301 NORM PDDL
023976,000417: 07,2472 00047 X1 # (2 - R V**/MU) (+6-N)
023977,000418: 07,2473 56362 SR1R DDV # MAGNITUDE OF R (+30 OR +28)
023978,000419: 07,2474 41457 SL* PUSH # R/(2 - R V**/MU) (+29 OR +27)02D
023979,000420: 07,2475 20174 0 -5,1
023980,000421: 07,2476 75542 SR1 SQRT
023981,000422: 07,2477 77605 DMP
023982,000423: 07,2500 65301 NORM PDDL # ASUBP*** 00D
023983,000424: 07,2501 00047 X1
023984,000425: 07,2502 56342 SR1 DDV
023985,000426: 07,2503 53605 DMP SL*
023986,000427: 07,2504 03752 TF
023987,000428: 07,2505 20201 0,1
023988,000429: 07,2506 60325 PDDL NORM
023989,000430: 07,2507 11515 2PISC
023990,000431: 07,2510 00047 X1
023991,000432: 07,2511 56325 PDDL DDV
023992,000433: 07,2512 77657 SL*
023993,000434: 07,2513 20176 0 -3,1 # CENTANG = (SQRT(MU/ASUP***)TF)
023994,000435: 07,2514 37754 STCALL CENTANG # IN REVOLUTIONS B-0
023995,000436: 07,2515 02370 SUBEXIT
023996,000437: 35,3431 BANK 35
023997,000438: 35,2000 SETLOC P17S1
023998,000439: 35,2000 BANK
023999,000440: 35,3431 COUNT 35/P17
024000,000441:
024001,000442: # TPI SEARCH DISPLAY ROUTINE
024002,000443:
024003,000444: 35,3431 03726 P17 TC AVFLAGA # AVFLAG = CSM , SET TRACK + UPDATE FLAGS
024004,000445: 35,3432 03434 TC P17.1
024005,000446: 35,3433 03741 P77 TC AVFLAGP # AVFLAG = LEM , SET TRACK + UPDATE FLAGS
024006,000447: 35,3434 03746 P17.1 TC P20FLGON # SET UPDATE FLAG
024007,000448: 35,3435 33125 CAF V06N37 # DISPLAY TTPI TIME
024008,000449: 35,3436 03114 TC VNPOOH
024009,000450: 35,3437 06006 TC INTPRET
024010,000451: 35,3440 45014 CLEAR CALL
024011,000452: 35,3441 00670 UPDATFLG
024012,000453: 35,3442 74026 S17.1 # UPDATE STATE VECTORS TO TTPI
024013,000454: 35,3443 76014 SET AXT,1
024014,000455: 35,3444 00470 UPDATFLG
024015,000456: 35,3445 00002 DEC 2 B-14 # DELTA H = 2 K POSITIVE , KFLAG OFF
024016,000457: 35,3446 76014 BOFF AXT,1
024017,000458: 35,3447 00356 KFLAG
024018,000459: 35,3450 73452 +2
024019,000460: 35,3451 00001 DEC 1 B-14 # DELTA H = 1 K NEGATIVE , KFLAG ON
024020,000461: 35,3452 77530 SXA,1 EXIT
024021,000462: 35,3453 01132 OPTION2
![]() |
Page 548 |
024023,000464: 35,3454 33543 CAF V06N72 # DISPLAY PHI , DELTA H , SEARCH OPTION K
024024,000465: 35,3455 03517 TC VNCOMP17
024025,000466: 35,3456 06006 TC INTPRET
024026,000467: 35,3457 43014 CLEAR SET
024027,000468: 35,3460 00670 UPDATFLG
024028,000469: 35,3461 00076 KFLAG
024029,000470: 35,3462 45335 SLOAD DSU
024030,000471: 35,3463 01133 OPTION2 # RESET KFLAG ON FOR OPTION =1
024031,000472: 35,3464 36100 P21ONENN # OFF FOR OPTION =2
024032,000473: 35,3465 43030 BHIZ CLEAR
024033,000474: 35,3466 73470 +2
024034,000475: 35,3467 00276 KFLAG
024035,000476: 35,3470 46135 SLOAD BHIZ
024036,000477: 35,3471 03747 XRS +1
024037,000478: 35,3472 73476 +4
024038,000479: 35,3473 52145 DLOAD GOTO
024039,000480: 35,3474 34003 HPL
024040,000481: 35,3475 73500 P17.2
024041,000482: 35,3476 77745 DLOAD
024042,000483: 35,3477 34001 HPE
024043,000484: 35,3500 36321 P17.2 STCALL HPERMIN
024044,000485: 35,3501 74104 S17.2
024045,000486: 35,3502 77414 SET EXIT
024046,000487: 35,3503 00470 UPDATFLG
024047,000488: 35,3504 33127 P17.3 CAF V06N58 # DISPLAY DELTA VTPI , DELTA VTPF , AND H
024048,000489: 35,3505 03517 TC VNCOMP17
024049,000490: 35,3506 33126 CAF V06N55 # DISPLAY PERICENTER CODE AND CENTRAL ANG,
024050,000491: 35,3507 04555 TC BANKCALL
024051,000492: 35,3510 20763 CADR GOFLASHR
024052,000493: 35,3511 04106 TC GOTOPOOH # TERMINATE PROGRAM
024053,000494: 35,3512 04106 TC GOTOPOOH # END PROGRAM
024054,000495: 35,3513 03434 TC P17.1 # RECYCLE WITH NEW TTPI OR SEARCH OPTION
024055,000496: 35,3514 34711 CAF TWO # BLANK R2
024056,000497: 35,3515 05415 TC BLANKET
024057,000498: 35,3516 15112 TCF ENDOFJOB
024058,000499: 35,3517 E4,1767 EBANK= RTRN
024059,000500:
024060,000501: 35,3517 00006 VNCOMP17 EXTEND
024061,000502: 35,3520 23766 QXCH QSAVED
024062,000503: 35,3521 55765 TS VERBNOUN
024063,000504: 35,3522 31765 CA VERBNOUN
024064,000505: 35,3523 04555 TCR BANKCALL
024065,000506: 35,3524 20624 CADR GOFLASH
024066,000507: 35,3525 03522 TC -3 # TERMINATE ILLEGAL REDISPLAY
024067,000508: 35,3526 01766 TC QSAVED # PROCEED
024068,000509: 35,3527 40154 CS MPAC # RECYCLE WITH NEW TPI TIME
024069,000510: 35,3530 64705 AD BIT6 # OR PROCEED WITH NEW SEARCH OPTION
024070,000511: 35,3531 00006 EXTEND
024071,000512: 35,3532 13434 BZF P17.1
024072,000513: 35,3533 03522 TC VNCOMP17 +3
![]() |
Page 549 |
024074,000515: 35,3534 77414 ALARUMS SET EXIT
024075,000516: 35,3535 00470 UPDATFLG
024076,000517: 35,3536 05537 TC ALARM
024077,000518: 35,3537 00124 OCT 00124 # NO SAFE PERCENTER IN THIS SECTOR
024078,000519: 35,3540 34743 CAF V05N09
024079,000520: 35,3541 03517 TC VNCOMP17
024080,000521: 35,3542 04106 TC GOTOPOOH # PROCEED ILLEGAL TERMINATE PROGRAM
024081,000522: 35,3543 01510 V06N72 VN 0672
End of include-file TPI_SEARCH.agc. Parent file is MAIN.agc