GAP: ASSEMBLE REVISION 055 OF AGC PROGRAM COMANCHE BY NASA 2021113-051 10:28 APR. 1,1969Note that the date is the date of the printout, not the date of the program revision.
Source Code
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These source-code files were from the printout at the MIT Museum, with many thanks
to Deborah Douglas, the Museum's Curator of Science and Technology, for releasing
it to us. The printout was digitally photographed by Paul Fjeld. A team of
volunteers transcribed the source code manually from these images or, where
appropriate, modified already-transcribed but similar source Colossus 249 (Apollo 9)
source code to agree with the images from the printout. Note that the page images
presented online are of reduced quality, and that higher-quality 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 055 OF AGC PROGRAM COMANCHE BY NASA 2021113-051 10:28 APR. 1,1969Note that the date is the date of the printout, not the date of the program revision. |
022442,000002: ## Copyright: Public domain.
022443,000003: ## Filename: R30.agc
022444,000004: ## Purpose: Part of the source code for Colossus 2A, AKA Comanche 055.
022445,000005: ## It is part of the source code for the Command Module's (CM)
022446,000006: ## Apollo Guidance Computer (AGC), for Apollo 11.
022447,000007: ## Assembler: yaYUL
022448,000008: ## Contact: Hartmuth Gutsche <hgutsche@xplornet.com>.
022449,000009: ## Website: www.ibiblio.org/apollo.
022450,000010: ## Pages: 514-524
022451,000011: ## Mod history: 2009-05-09 HG Started adapting from the Colossus249/ file
022452,000012: ## of the same name, using Comanche055 page
022453,000013: ## images 0514.jpg - 0524.jpg.
022454,000014: ## 2016-12-10 RSB Proofed comments with octopus/ProoferComments
022455,000015: ## and fixed the errors found.
022456,000016: ## 2017-01-18 RSB Fixed comment-text errors noted while diff'ing
022457,000017: ## vs Colossus 249.
022458,000018: ## 2017-02-08 RSB Comment-text fixes discovered while proofing Artemis 72.
022459,000019: ##
022460,000020: ## This source code has been transcribed or otherwise adapted from digitized
022461,000021: ## images of a hardcopy from the MIT Museum. The digitization was performed
022462,000022: ## by Paul Fjeld, and arranged for by Deborah Douglas of the Museum. Many
022463,000023: ## thanks to both. The images (with suitable reduction in storage size and
022464,000024: ## consequent reduction in image quality as well) are available online at
022465,000025: ## www.ibiblio.org/apollo. If for some reason you find that the images are
022466,000026: ## illegible, contact me at info@sandroid.org about getting access to the
022467,000027: ## (much) higher-quality images which Paul actually created.
022468,000028: ##
022469,000029: ## Notations on the hardcopy document read, in part:
022470,000030: ##
022471,000031: ## Assemble revision 055 of AGC program Comanche by NASA
022472,000032: ## 2021113-051. 10:28 APR. 1, 1969
022473,000033: ##
022474,000034: ## This AGC program shall also be referred to as
022475,000035: ## Colossus 2A
022476,000036:
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Page 514 |
022478,000038: # SUBROUTINE NAME: V82CALL
022479,000039: # MOD NO: 0 DATE: 16 FEB 67
022480,000040: # MOD BY: RR BAIRNSFATHER LOG SECTION: R30
022481,000041: # MOD NO: 1 MOD BY: RR BAIRNSFATHER DATE: 11 APR 67 SR30.1 CHANGED TO ALLOW MONITOR OPERN
022482,000042: # MOD NO: 2 MOD BY ALONSO DATE: 11 DEC 67 VB82 PROGRAM REWRITTEN
022483,000043: # MOD NO: 3 MOD BY ALONSO DATE: 26 MAR 68 PROG MOD TO HANDLE DIF EARTH/MOON SCALE
022484,000044:
022485,000045: # NEW FUNCTIONAL DESCRIPTION: CALLED BY VERB 82 ENTER. PRIORITY 10
022486,000046: # USED THROUGHOUT. CALCULATE AND DISPLAY ORBITAL PARAMETERS
022487,000047:
022488,000048: # 1. IF AVERAGE G IS OFF:
022489,000049: # FLASH DISPLAY V04N06. R2 INDICATES WHICH SHIP'S STATE VECTOR IS
022490,000050: # TO BE UPDATED. INITIAL CHOICE IS THIS SHIP (R2=1). ASTRONAUT
022491,000051: # CAN CHANGE TO OTHER SHIP BY V22EXE, WHERE X NOT EQ 1.
022492,000052: # SELECTED STATE VECTOR UPDATED BY THISPREC (OTHPREC).
022493,000053: # CALLS SR30.1 (WHICH CALLS TFFCONMU + TFFRP/RA) TO CALCULATE
022494,000054: # RPER (PERIGEE RADIUS), RAPO (APOGEE RADIUS), HPER (PERIGEE
022495,000055: # HEIGHT ABOVE LAUNCH PAD OR LUNAR LANDING SITE), HAPO (APOGEE
022496,000056: # HEIGHT AS ABOVE), TPER (TIME TO PERIGEE), TFF (TIME TO
022497,000057: # INTERSECT 300 KFT ABOVE PAD OR 35KFT ABOVE LANDING SITE).
022498,000058: # FLASH MONITOR V16N44 (HAPO, HPER, TFF). TFF IS -59M59S IF IT WAS
022499,000059: # NOT COMPUTABLE, OTHERWISE IT INCREMENTS ONCE PER SECOND.
022500,000060: # ASTRONAUT HAS OPTION TO MONITOR TPER BY KEYING IN N 32 E.
022501,000061: # DISPLAY IS IN HMS, IS NEGATIVE (AS WAS TFF), AND INCREMENTS
022502,000062: # ONCE PER SECOND ONLY IF TFF DISPLAY WAS -59M59S.
022503,000063: # 2. IF AVERAGE G IS ON:
022504,000064: # CALLS SR30.1 APPROX EVERY TWO SECS. STATE VECTOR IS ALWAYS
022505,000065: # FOR THIS VEHICLE. V82 DOES NOT DISTURB STATE VECTOR. RESULTS
022506,000066: # OF SR30.1 ARE RAPO, RPER, HAPO, HPER, TPER, TFF.
022507,000067: # FLASH MONITOR V16N44 (HAPO, HPER, TFF).
022508,000068: # IF MODE IS P11, THEN CALL DELRSPL SO ASTRONAUT CAN MONITOR
022509,000069: # RESULTS BY N50E. SPLASH COMPUTATION DONE ONCE PER TWO SECS.
022510,000070: # ADDENDUM: HAPO AND HPER SHOULD BE CHANGED TO READ HAPOX AND HPERX IN THE
022511,000071: # ABOVE REMARKS.
022512,000072:
022513,000073: # CALLING SEQUENCE: VERB 82 ENTER.
022514,000074:
022515,000075: # SUBROUTINES CALLED: SR30.1, GOXDSPF
022516,000076: # MAYBE - THISPREC, OTHPREC, LOADTIME, DELRSPL
022517,000077:
022518,000078: # NORMAL EXIT MODES: TC ENDEXT
022519,000079:
022520,000080: # ALARMS: NONE
022521,000081:
022522,000082: # OUTPUT: HAPOX (-29) M
022523,000083: # HPERX (-29) M
022524,000084: # RAPO (-29) M EARTH
022525,000085: # (-27) M MOON
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Page 515 |
022527,000087: # RPER (-29) M EARTH
022528,000088: # (-27) M MOON
022529,000089: # TFF (-28) CS CONTAINS NEGATIVE QUANTITY
022530,000090: # -TPER (-28) CS CONTAINS NEGATIVE QUANTITY
022531,000091: # RSP-RREC(-29) M IF DELRSPL CALLED
022532,000092:
022533,000093: # ERASABLE INITIALIZATION REQUIRED: STATE VECTOR.
022534,000094:
022535,000095: # DEBRIS: QPRET, RONE, VONE, TFF/RTMU, HPERMIN, RPADTEM, V82EMFLG.
022536,000096: # MAYBE: TSTART82, V82FLAGS, TDEC1.
022537,000097:
022538,000098: 13,2231 E4,1751 EBANK= HAPOX
022539,000099: 31,2332 BANK 31
022540,000100: 23,2000 SETLOC R30LOC
022541,000101: 23,2000 BANK
022542,000102: 23,2332 COUNT* $$/R30
022543,000103:
022544,000104: 23,2332 06006 V82CALL TC INTPRET
022545,000105: 23,2333 52014 BON GOTO
022546,000106: 23,2334 00716 AVEGFLAG
022547,000107: 23,2335 46566 V82GON # IF AVERAGE G ON
022548,000108: 23,2336 46337 V82GOFF # IF AVERAGE G OFF
022549,000109:
022550,000110: 23,2337 77776 V82GOFF EXIT # ALLOW ASTRONAUT TO SELECT VEHICLE
022551,000111: 23,2340 35016 CAF TWO # DESIRED FOR ORBITAL PARAMETERS
022552,000112: 23,2341 55051 TS OPTIONX
022553,000113: 23,2342 35017 CAF ONE
022554,000114: 23,2343 55052 TS OPTIONX +1
022555,000115: 23,2344 32406 CAF OPTIONVN # V 04 N 06
022556,000116: 23,2345 04662 TC BANKCALL
022557,000117: 23,2346 20561 CADR GOXDSPF
022558,000118: 23,2347 05534 TC ENDEXT # TERMINATE
022559,000119: 23,2350 02352 TC +2 # PROCEED
022560,000120: 23,2351 02344 TC -5 # DATA IN. OPTIONX +1 = 1 FOR THIS VEHIC.
022561,000121: # UNEQ 1 FOR OTHER VEHICLE.
022562,000122: 23,2352 35014 CAF BIT4 # 80 MS
022563,000123: 23,2353 05245 TC WAITLIST
022564,000124: 23,2354 E4,1743 EBANK= TFF
022565,000125: 23,2354 02531 46064 2CADR TICKTEST
022566,000126:
022567,000127: 23,2356 00003 RELINT
022568,000128: 23,2357 32410 V82GOFLP CAF TFFBANK # MAJOR RECYCLE LOOP ENTRY
022569,000129: 23,2360 54003 TS EBANK
022570,000130: 23,2361 35021 CAF ZERO
022571,000131: 23,2362 55742 TS V82FLAGS # ZERO FLAGS FOR TICKTEST. INHIBITS
022572,000132: # DECREMENTING OF TFF AND -TPER.
022573,000133: 23,2363 35063 CAF PRIO7
022574,000134: 23,2364 05147 TC FINDVAC # V82GOFF1 WILL EXECUTE STATE VECTOR
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Page 516 |
022576,000136: 23,2365 E4,1743 EBANK= TFF # UPDATE AND ORBIT CALCULATIONS FOR
022577,000137: 23,2365 02411 46064 2CADR V82GOFF1 # SELECTED VEHICLE ABOUT PROPER BODY.
022578,000138:
022579,000139: 23,2367 00003 RELINT
022580,000140: 23,2370 36214 V82STALL CAF THREE # STALL IN THIS LOOP AND WITHOLD V 16 N 44
022581,000141: 23,2371 71742 MASK V82FLAGS # UNTIL STATE VECTOR UPDATE SETS ONE OF
022582,000142: 23,2372 10000 CCS A # OUR FLAG BITS.
022583,000143: 23,2373 02400 TC FLAGGON # EXIT FROM STALL LOOP.
022584,000144: 23,2374 35041 CAF 1SEC
022585,000145: 23,2375 04662 TC BANKCALL
022586,000146: 23,2376 01732 CADR DELAYJOB
022587,000147: 23,2377 02370 TC V82STALL
022588,000148:
022589,000149: 23,2400 32407 FLAGGON CAF V16N44 # MONITOR HAPO,HPER,TFF.
022590,000150: 23,2401 04662 TC BANKCALL
022591,000151: 23,2402 20561 CADR GOXDSPF
022592,000152: 23,2403 05625 TC B5OFF # TERM THIS TELLS TICKTEST TO KILL ITSELF
022593,000153: 23,2404 05625 TC B5OFF # PROCEED DITTO
022594,000154: 23,2405 02357 TC V82GOFLP # RECYCLE RECOMPUTE STATE VECT + DISPLAY
022595,000155:
022596,000156: 23,2406 01014 OPTIONVN VN 0412
022597,000157: 23,2407 04054 V16N44 VN 1644
022598,000158: 23,2410 02343 TFFBANK ECADR TFF
022599,000159:
022600,000160: 23,2411 06006 V82GOFF1 TC INTPRET
022601,000161: 23,2412 77634 RTB
022602,000162: 23,2413 45510 LOADTIME
022603,000163: 23,2414 00041 STORE TDEC1 # TIME FOR STATE VECTOR UPDATE.
022604,000164: 23,2415 02325 STORE TSTART82 # TIME FOR INTERNAL USE.
022605,000165: 23,2416 77776 EXIT
022606,000166: 23,2417 41052 CS OPTIONX +1 # 1 FOR THIS VEHICLE, NOT 1 FOR OTHER
022607,000167: 23,2420 65017 AD ONE
022608,000168: 23,2421 00006 EXTEND
022609,000169: 23,2422 12446 BZF THISSHIP
022610,000170: 23,2423 06006 OTHSHIP TC INTPRET
022611,000171: 23,2424 77624 CALL # CALL STATE VECTOR UPDATE FOR OTHER SHIP.
022612,000172: 23,2425 27105 OTHPREC
022613,000173: 23,2426 77775 BOTHSHIP VLOAD # MOVE RESULTS INTO TFFCONIC STORAGE AREAS
022614,000174: 23,2427 00001 RATT # TO BE CALLED BY SR30.1.
022615,000175: 23,2430 26327 STOVL RONE # RATT AT (-29)M FOR EARTH OR MOON
022616,000176: 23,2431 00007 VATT
022617,000177: 23,2432 02335 STORE VONE # VATT AT (-7)M/CS FOR EARTH OR MOON
022618,000178: 23,2433 77743 DLOAD*
022619,000179: 23,2434 71321 1/RTMUE,2 # X2 IS 0 FOR EARTH CENTERED STATE VEC
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HG remark: In Comanche055 scan this line (5324) looks pretty much like 1/RTMUF.2 can not decide, leave it as it is in start source. |
022622,000182: 23,2435 00037 STORE TFF/RTMU # X2 IS 2 FOR MOON
022623,000183: 23,2436 77743 DLOAD* # AS LEFT BY THISPREC OR OTHPREC.
022624,000184: 23,2437 71315 MINPERE,2
022625,000185: 23,2440 02321 STORE HPERMIN # TFFRTMU, HPERMIN AND RPADTEM ARE ALL
022626,000186: 23,2441 46135 SLOAD BHIZ # EARTH/MOON PARAMETERS AS SET HERE.
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Page 517 |
022628,000188: 23,2442 00050 X2
022629,000189: 23,2443 46463 EARTHPAD
022630,000190: 23,2444 77650 GOTO
022631,000191: 23,2445 46467 MOONPAD
022632,000192: 23,2446 06006 THISSHIP TC INTPRET
022633,000193: 23,2447 77624 CALL # CALL STATE VECTOR UPDATE FOR THIS SHIP.
022634,000194: 23,2450 27071 THISPREC
022635,000195: 23,2451 77650 GOTO
022636,000196: 23,2452 46426 BOTHSHIP
022637,000197:
022638,000198: # THE FOLLOWING CONSTANTS ARE PAIRWISE INDEXED. DO NOT SEPARATE PAIRS.
022639,000199:
022640,000200: 23,2453 27533 07571 1/RTMUM 2DEC* .45162595 E-4 B14*
022641,000201: 23,2455 25004 06702 1/RTMUE 2DEC* .50087529 E-5 B17*
022642,000202:
022643,000203: 23,2457 00001 11530 MINPERM 2DEC 10668 B-27 # 35 KFT MIN PERIGEE HEIGHT FOR MOON(-27)M
022644,000204: 23,2461 00002 31230 MINPERE 2DEC 91440 B-29 # 300 KFT (-29)M FOR EARTH
022645,000205:
022646,000206: 23,2463 43145 EARTHPAD DLOAD CLRGO # PAD 37-B RADIUS. SCALED AT (-29)M.
022647,000207: 23,2464 05152 RPAD
022648,000208: 23,2465 04622 V82EMFLG # INDICATE EARTH SCALING FOR SR30.1
022649,000209: 23,2466 46473 BOTHPAD
022650,000210:
022651,000211: 23,2467 51575 MOONPAD VLOAD ABVAL # COMPUTE MOON PAD RADIUS FROM RLS VECTOR.
022652,000212: 23,2470 02026 RLS # SCALED AT (-27)M.
022653,000213: 23,2471 77614 SET
022654,000214: 23,2472 04462 V82EMFLG # INDICATE MOON SCALING FOR SR30.1
022655,000215: 23,2473 36323 BOTHPAD STCALL RPADTEM
022656,000216: 23,2474 46667 SR30.1 # CALCULATE ORBITAL PARAMETERS
022657,000217: 23,2475 77776 EXIT
022658,000218: 23,2476 31011 CA MODREG # ARE WE IN POO
022659,000219: 23,2477 00006 EXTEND
022660,000220: 23,2500 12645 BZF CANDEL # YES, DO DELRSPL
022661,000221: 23,2501 06006 SPLRET1 TC INTPRET
022662,000222: 23,2502 45234 RTB DSU
022663,000223: 23,2503 45510 LOADTIME
022664,000224: 23,2504 02325 TSTART82 # PRESENT TIME - TIME V82GOFF1 BEGAN
022665,000225: 23,2505 02325 STORE TSTART82 # SAVE IT
022666,000226: 23,2506 53145 DLOAD BZE # SR30.1 SETS -TPER=0 IF HPER L/
022667,000227: 23,2507 02346 -TPER # HPERMIN (300 OR 35) KFT.
022668,000228: 23,2510 46521 TICKTFF # (-TPER = 0)
022669,000229: 23,2511 43345 TICKTPER DLOAD DAD # (-TPER NON ZERO) TFF WAS NOT COMPUTED,
022670,000230: 23,2512 02346 -TPER # BUT WAS SET TO 59M59S. DONT TICK TFF, DO
022671,000231: 23,2513 02325 TSTART82 # TICK -TPER. DISPLAY BOTH.
022672,000232: 23,2514 02346 STORE -TPER # -TPER CORRECTED FOR TIME SINCE V82GOFF1
022673,000233: 23,2515 77776 EXIT # BEGAN.
022674,000234:
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Page 518 |
022676,000236: 23,2516 35017 CAF BIT1
022677,000237: 23,2517 55742 TS V82FLAGS # INFORMS TICKTEST TO INCREMENT ONLY -TPER
022678,000238: 23,2520 05217 TC ENDOFJOB
022679,000239:
022680,000240: 23,2521 43345 TICKTFF DLOAD DAD # (-TPER=0) TFF WAS COMPUTED. TICK TFF.
022681,000241: 23,2522 02344 TFF # DO NOT TICK -TPER. DISPLAY TFF, BUT NOT
022682,000242: 23,2523 02325 TSTART82 # -TPER.
022683,000243: 23,2524 02344 STORE TFF # TFF CORRECTED FOR TIME SINCE V82GOFF1
022684,000244: 23,2525 77776 EXIT # BEGAN.
022685,000245: 23,2526 35016 CAF BIT2
022686,000246: 23,2527 55742 TS V82FLAGS # INFORMS TICKTEST TO INCREMENT ONLY TFF.
022687,000247: 23,2530 05217 TC ENDOFJOB
022688,000248:
022689,000249: 23,2531 35013 TICKTEST CAF BIT5 # THIS WAITLIST PROGRAM PERPETUATES ITSELF
022690,000250: 23,2532 71044 MASK EXTVBACT # ONCE A SEC UNTIL BIT 5 OF EXTVBACT =0.
022691,000251: 23,2533 10000 CCS A
022692,000252: 23,2534 02542 TC DOTICK
022693,000253: 23,2535 37662 CAF PRIO25
022694,000254: 23,2536 05134 TC NOVAC # TERMINATE V 82. CANT CALL ENDEXT IN RUPT.
022695,000255: 23,2537 1044 EBANK= EXTVBACT
022696,000256: 23,2537 05534 04062 2CADR ENDEXT
022697,000257:
022698,000258: 23,2541 05324 TC TASKOVER
022699,000259: 23,2542 35041 DOTICK CAF 1SEC # RE-REQUEST TICKTEST.
022700,000260: 23,2543 05245 TC WAITLIST
022701,000261: 23,2544 E4,1743 EBANK= TFF
022702,000262: 23,2544 02531 46064 2CADR TICKTEST
022703,000263:
022704,000264: 23,2546 36214 CAF THREE
022705,000265: 23,2547 71742 MASK V82FLAGS
022706,000266: 23,2550 50000 INDEX A
022707,000267: 23,2551 02552 TC +1
022708,000268: 23,2552 05324 TC TASKOVER # IF NO FLAGBITS SET DONT CHANGE TFF OR
022709,000269: # -TPER, BUT CONTINUE LOOP.
022710,000270: 23,2553 02561 TC TPERTICK # ONLY BIT 1 SET. INCR -TPER BY 1 SEC.
022711,000271: 23,2554 35041 TFFTICK CAF 1SEC # ONLY BIT 2 SET. INCR TFF BY 1 SEC.
022712,000272: 23,2555 54001 TS L
022713,000273: 23,2556 35021 CAF ZERO
022714,000274: 23,2557 21744 DAS TFF
022715,000275: 23,2560 05324 TC TASKOVER
022716,000276: 23,2561 35041 TPERTICK CAF 1SEC
022717,000277: 23,2562 54001 TS L
022718,000278: 23,2563 35021 CAF ZERO
022719,000279: 23,2564 21746 DAS -TPER
022720,000280: 23,2565 05324 TC TASKOVER
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Page 519 |
022722,000282: 23,2566 77776 V82GON EXIT # AVERAGE G ON. USE CURRENT STATE VECTOR
022723,000283: # FOR ORBITAL PARAMETER CALCULATIONS.
022724,000284: 23,2567 35063 CAF PRIO7 # LESS THAN LAMBERT
022725,000285: 23,2570 05147 TC FINDVAC # V82GON1 WILL PERFORM ORBIT CALCULATIONS
022726,000286: 23,2571 E4,1743 EBANK= TFF # ABOUT PROPER BODY APPROX ONCE PER SEC.
022727,000287: 23,2571 02604 46064 2CADR V82GON1
022728,000288:
022729,000289: 23,2573 00003 RELINT
022730,000290: 23,2574 10067 CCS NEWJOB # WITHOLD V16 N44 UNTIL FIRST ORBIT CALC
022731,000291: 23,2575 05164 TC CHANG1 # IS DONE. NOTE: V82GON1 (PRIO7, FINDVAC
022732,000292: # JOB) IS COMPLETED BEFORE V82GON (PRIO7,
022733,000293: # NOVAC JOB).
022734,000294: 23,2576 32407 V82REDSP CAF V16N44 # MONITOR HAPO, HPER, TFF
022735,000295: 23,2577 04662 TC BANKCALL
022736,000296: 23,2600 20561 CADR GOXDSPF
022737,000297: 23,2601 05625 TC B5OFF # TERM THIS TELLS V82GON1 TO KILL ITSELF.
022738,000298: 23,2602 05625 TC B5OFF # PROC DITTO.
022739,000299: 23,2603 02576 TC V82REDSP # RECYCLE
022740,000300:
022741,000301: 23,2604 06006 V82GON1 TC INTPRET # THIS EXEC PROGRAM PERPETUATES ITSELF
022742,000302: # ONCE A SEC UNTIL BIT 5 OF EXTVBACT =0.
022743,000303: 23,2605 52175 VLOAD GOTO # HOLDS OFF CCS NEWJOB BETWEEN RN AND
022744,000304: 23,2606 01171 RN # VN FETCH SO RN, VN ARE FROM SAME
022745,000305: 23,2607 46610 NEXTLINE # STATE VECTOR UPDATE.
022746,000306: 23,2610 26327 NEXTLINE STOVL RONE # RN AT (-29)M FOR EARTH OR MOON
022747,000307: 23,2611 01177 VN
022748,000308: 23,2612 02335 STORE VONE # VN AT (-7)M/CS FOR EARTH OR MOON
022749,000309: 23,2613 52014 BON GOTO
022750,000310: 23,2614 00315 AMOONFLG # FLAG INDICATES BODY ABOUT WHICH ORBITAL
022751,000311: 23,2615 46617 MOONGON # CALCULATIONS ARE TO BE PERFORMED.
022752,000312: 23,2616 46630 EARTHGON # IF SET - MOON, IF RESET - EARTH.
022753,000313:
022754,000314: 23,2617 71214 MOONGON SET DLOAD
022755,000315: 23,2620 04462 V82EMFLG # INDICATE MOON SCALING FOR SR30.1
022756,000316: 23,2621 06454 1/RTMUM # LUNAR PARAMETERS LOADED HERE FOR SR30.1
022757,000317: 23,2622 14037 STODL TFF/RTMU
022758,000318: 23,2623 06460 MINPERM
022759,000319: 23,2624 26321 STOVL HPERMIN
022760,000320: 23,2625 02026 RLS # SCALED AT (-27)M.
022761,000321: 23,2626 52046 ABVAL GOTO
022762,000322: 23,2627 46637 V82GON2
022763,000323: 23,2630 71214 EARTHGON CLEAR DLOAD
022764,000324: 23,2631 04662 V82EMFLG # INDICATE EARTH SCALING FOR SR30.1
022765,000325: 23,2632 06456 1/RTMUE # EARTH PARAMETERS LOADED HERE FOR SR30.1
022766,000326: 23,2633 14037 STODL TFF/RTMU
022767,000327: 23,2634 06462 MINPERE
022768,000328: 23,2635 16321 STODL HPERMIN
022769,000329: 23,2636 05152 RPAD
022770,000330: 23,2637 36323 V82GON2 STCALL RPADTEM # COMMON CODE FOR EARTH & MOON.
022771,000331: 23,2640 46667 SR30.1
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Page 520 |
022773,000333: 23,2641 77776 EXIT
022774,000334: 23,2642 05364 TC CHECKMM
022775,000335: 23,2643 00013 DEC 11 B-14
022776,000336: 23,2644 02657 TC V82GON3 # NOT IN MODE 11.
022777,000337: 23,2645 06006 CANDEL TC INTPRET # IN MODE 11 OR 00
022778,000338: 23,2646 77624 CALL
022779,000339: 23,2647 27442 INTSTALL # DELRSPL DOES INTWAKE
022780,000340: 23,2650 45145 DLOAD CALL
022781,000341: 23,2651 02344 TFF
022782,000342: 23,2652 64017 DELRSPL # RETURN IS TO NEXT LINE (SPLRET).
022783,000343: 23,2653 77776 SPLRET EXIT
022784,000344:
022785,000345: 23,2654 31011 CA MODREG
022786,000346: 23,2655 00006 EXTEND
022787,000347: 23,2656 12501 BZF SPLRET1
022788,000348: 23,2657 35013 V82GON3 CAF BIT5
022789,000349: 23,2660 71044 MASK EXTVBACT # SEE IF ASTRONAUT HAS SIGNALLED TERMINATE
022790,000350: 23,2661 00006 EXTEND
022791,000351: 23,2662 15534 BZF ENDEXT # YES, TERMINATE VB 82 LOOP
022792,000352: 23,2663 35041 CAF 1SEC
022793,000353: 23,2664 04662 TC BANKCALL # WAIT ONE SECOND BEFORE REPEATING
022794,000354: 23,2665 01732 CADR DELAYJOB # ORBITAL PARAMETER COMPUTATION.
022795,000355: 23,2666 02604 TC V82GON1
022796,000356:
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Page 521 |
022798,000358: # SUBROUTINE NAME: SR30.1
022799,000359: # MOD NO: 0 DATE: 16 FEB 67
022800,000360: # MOD BY: RR BAIRNSFATHER LOG SECTION: R32
022801,000361: # MOD NO: 1 MOD BY: RR BAIRNSFATHER DATE: 11 APR 67 SR30.1 CHANGED TO ALLOW MONITOR OPERN
022802,000362: # MOD NO: 2 MOD BY: RR BAIRNSFATHER DATE: 14 APR 67 ADD OVFL CK FOR RAPO
022803,000363: # MOD NO: 3 MOD BY ALONSO DATE: 11 DEC 67 SUBROUTINE REWRITTEN
022804,000364: # MOD NO: 4 MOD BY ALONSO DATE: 26 MAR 68 PROG MOD TO HANDLE DIF EARTH/MOON SCALE
022805,000365: # MOD NO: 5 MOD BY: RR BAIRNSFATHER DATE: 6 AUG 68 OVFL CK FOR HAPO & HPER. VOIDS MOD #2.
022806,000366:
022807,000367: # NEW FUNCTIONAL DESCRIPTION: ORBITAL PARAMETERS DISPLAY FOR NOUNS 32 AND 44.
022808,000368: # SR30.1 CALLS TFFCONMU AND TFFRP/RA TO CALCULATE RPER (PERIGEE RADIUS),
022809,000369: # RAPO (APOGEE RADIUS), HPER (PERIGEE HEIGHT ABOVE LAUNCH PAD OR LUNAR
022810,000370: # LANDING SITE), HAPO (APOGEE HEIGHT AS ABOVE), TPER (TIME TO PERIGEE),
022811,000371: # TFF (TIME TO INTERSECT 300 KFT ABOVE PAD OR 35KFT ABOVE LANDING SITE).
022812,000372: # IF HPER IS GREATER THAN OR EQUAL TO HPERMIN, CALCULATES TPER AND STORES
022813,000373: # NEGATIVE IN -TPER. OTHERWISE STORES +0 IN -TPER. WHENEVER TPER IS
022814,000374: # CALCULATED, TFF IS NOT COMPUTABLE AND DEFAULTS TO -59MIN 59SEC. IF HAPO
022815,000375: # WOULD EXCEED 9999.9 NM, IT IS LIMITED TO THAT VALUE FOR DISPLAY.
022816,000376:
022817,000377: # ADDENDUM: HAPO AND HPER SHOULD BE CHANGED TO READ HAPOX AND HPERX IN THE
022818,000378: # ABOVE REMARKS.
022819,000379:
022820,000380: # CALLING SEQUENCE: CALL
022821,000381: # SR30.1
022822,000382:
022823,000383: # SUBROUTINES CALLED: TFFCONMU, TFFRP/RA, CALCTPER, CALCTFF
022824,000384:
022825,000385: # NORMAL EXIT MODE: CALLING LINE +1 (STILL IN INTERPRETIVE MODE)
022826,000386:
022827,000387: # ALARMS: NONE
022828,000388:
022829,000389: # OUTPUT: RAPO (-29) M EARTH APOGEE RADIUS EARTH CENTERED COORD.
022830,000390: # (-27) M MOON MOON CENTERED COORD.
022831,000391: # RPER (-29) M EARTH PERIGEE RADIUS EARTH CENTERED COORD.
022832,000392: # (-27) M MOON MOON CENTERED COORD.
022833,000393: # HAPOX (-29) M APOGEE ALTITUDE ABOVE PAD OR LAND. SITE MAX VALUE LIMITED TO 9999.9 NM.
022834,000394: # HPERX (-29) M PERIGEE ALT. ABOVE PAD OR LAND. SITE MAX VALUE LIMITED TO 9999.9 NM.
022835,000395: # TFF (-28) CS TIME TO 300KFT OR 35KFT ALTITUDE
022836,000396: # -TPER (-28) CS TIME TO PERIGEE
022837,000397:
022838,000398: # ERASABLE INITIALIZATION REQUIRED -
022839,000399: # TFF/RTMU (+17) EARTH RECIPROCAL OF PROPER GRAV CONSTANT FOR
022840,000400: # (+14) MOON EARTH OR MOON = 1/SQRT(MU).
022841,000401: # RONE (-29) M STATE VECTOR
022842,000402: # VONE (-7) M/CS STATE VECTOR
022843,000403: # RPADTEM (-29) M EARTH RADIUS OF LAUNCH PAD OR LUNAR LANDING
022844,000404: # (-27) M MOON SITE.
022845,000405: # HPERMIN (-29) M EARTH (300 OR 35) KFT MINIMUM PERIGEE ALTITUDE
022846,000406: # (-27) M MOON ABOVE LAUNCH PAD OR LUNAR LANDING SITE.
022847,000407: # V82EMFLG (INT SW BIT) RESET FOR EARTH, SET FOR MOON.
022848,000408:
022849,000409: # DEBRIS: QPRET, PDL, S2
022850,000410:
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Page 522 |
022852,000412: 23,2667 COUNT* $$/SR30S
022853,000413:
022854,000414: 23,2667 44001 SR30.1 SETPD STQ # INITIALIZE PUSHDOWN LIST.
022855,000415: 23,2670 00001 0
022856,000416: 23,2671 00051 S2
022857,000417: # SR30.1 INPUT: RONE AT (-29)M EARTH/MOON
022858,000418: # VONE AT (-7)M/CS
022859,000419: # TFFCONMU, TFFRP/RA, CALCTPER AND CALCTFF
022860,000420: # CALLS REQUIRE:
022861,000421: # EARTH CENTERED (NO RESCALING REQUIRED)
022862,000422: # RONE SCALED TO B-29 M
022863,000423: # VONE SCALED TO B-7 M/CS
022864,000424: # MOON CENTERED (RESCALING REQUIRED)
022865,000425: # RONE SCALED TO B-27 M
022866,000426: # VONE SCALED TO B-5 M/CS
022867,000427: 23,2672 77214 BOFF VLOAD
022868,000428: 23,2673 04742 V82EMFLG # OFF FOR EARTH, ON FOR MOON.
022869,000429: 23,2674 46703 TFFCALLS
022870,000430: 23,2675 02327 RONE
022871,000431: 23,2676 77752 VSL2
022872,000432: 23,2677 26327 STOVL RONE
022873,000433: 23,2700 02335 VONE
022874,000434: 23,2701 77752 VSL2
022875,000435: 23,2702 02335 STORE VONE
022876,000436: 23,2703 77624 TFFCALLS CALL
022877,000437: 23,2704 56760 TFFCONMU
022878,000438: 23,2705 77624 CALL # TFFRP/RA COMPUTES RAPO,RPER.
022879,000439: 23,2706 57026 TFFRP/RA
022880,000440: # RETURNS WITH RAPO IN D(MPAC).
022881,000441: 23,2707 77625 DSU
022882,000442: 23,2710 02323 RPADTEM
022883,000443: 23,2711 64414 BOFF SR2R # NEED HAPO AT (-29)M FOR DISPLAY.
022884,000444: # IF MOON CENTERED, RESCALE FROM (-27)M.
022885,000445: # IF EARTH CENTERED ALREADY AT (-29)M.
022886,000446: 23,2712 04742 V82EMFLG # OFF FOR EARTH, ON FOR MOON.
022887,000447: 23,2713 46714 +1
022888,000448: 23,2714 77624 CALL # IF HAPO > MAXNM, SET HAPO =9999.9 NM.
022889,000449: 23,2715 46754 MAXCHK # OTHERWISE STORE (RAPO-RPADTEM) IN HAPO.
022890,000450: 23,2716 16352 STORHAPO STODL HAPOX
022891,000451: 23,2717 00017 RPER
022892,000452: 23,2720 77625 DSU
022893,000453: 23,2721 02323 RPADTEM # GIVES HPER AT (-29)M EARTH, (-27)M MOON.
022894,000454: 23,2722 00161 STORE MPAC +4 # SAVE THIS FOR COMPARISON TO HPERMIN.
022895,000455: 23,2723 64414 BOFF SR2R # NEED HPER AT (-29)M FOR DISPLAY.
022896,000456: # IF MOON CENTERED, RESCALE FROM (-27)M.
022897,000457: # IF EARTH CENTERED ALREADY AT (-29)M.
022898,000458: 23,2724 04742 V82EMFLG # OFF FOR EARTH, ON FOR MOON.
022899,000459: 23,2725 46726 +1
022900,000460: 23,2726 77624 CALL # IF HPER > MAXNM, SET HPER = 9999.9 NM.
022901,000461: 23,2727 46754 MAXCHK
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Page 523 |
022903,000463: 23,2730 16354 STORHPER STODL HPERX # STORE (RPER - RPADTEM) INTO HPERX.
022904,000464: 23,2731 00161 MPAC +4
022905,000465: 23,2732 51025 DSU BPL # HPERMIN AT (-29)M FOR EARTH, (-27)M MOON
022906,000466: 23,2733 02321 HPERMIN # IF HPER L/ HPERMIN (300 OR 35) KFT,
022907,000467: 23,2734 46740 DOTPER # THEN ZERO INTO -TPER.
022908,000468: 23,2735 52145 DLOAD GOTO # OTHERWISE CALCULATE TPER.
022909,000469: 23,2736 15335 HI6ZEROS
022910,000470: 23,2737 46744 SKIPTPER
022911,000471: 23,2740 45145 DOTPER DLOAD CALL
022912,000472: 23,2741 00017 RPER
022913,000473: 23,2742 57064 CALCTPER
022914,000474: 23,2743 77676 DCOMP # TPER IS PUT NEG INTO -TPER.
022915,000475: 23,2744 16346 SKIPTPER STODL -TPER
022916,000476: 23,2745 02321 HPERMIN # HPERMIN AT (-29)M FOR EARTH, (-27)M MOON
022917,000477: 23,2746 45015 DAD CALL
022918,000478: 23,2747 02323 RPADTEM # RPADTEM AT (-29)M FOR EARTH, (-27)M MOON
022919,000479: 23,2750 57067 CALCTFF # GIVES 59M59S FOR TFF IF RPER G/
022920,000480: 23,2751 77676 DCOMP # HPERMIN + RPADTEM. (TPER WAS NON ZERO)
022921,000481: 23,2752 36344 STCALL TFF # OTHERWISE COMPUTES TFF. (GOTO)
022922,000482: 23,2753 00051 S2
022923,000483:
022924,000484: 23,2754 51025 MAXCHK DSU BPL # IF C(MPAC) > 9999.9 NM, MPAC = 9999.9 NM
022925,000485: 23,2755 06764 MAXNM
022926,000486: 23,2756 46761 +3 # OTHERWISE C(MPAC) = B(MPAC).
022927,000487: 23,2757 43415 DAD RVQ
022928,000488: 23,2760 06764 MAXNM
022929,000489: 23,2761 43545 +3 DLOAD RVQ # (USED BY P30 - P37 ALSO)
022930,000490: 23,2762 06764 MAXNM
022931,000491:
022932,000492: 23,2763 01065 05603 MAXNM 2OCT 0106505603
022933,000493:
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Page 524 |
022935,000495:
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There is no source code on this page — HG 2009 |
End of include-file R30.agc. Parent file is MAIN.agc