Source Code
022270,000001: # Copyright: Public domain.
022271,000002: # Filename: R30.agc
022272,000003: # Purpose: Part of the source code for Colossus 2A, AKA Comanche 055.
022273,000004: # It is part of the source code for the Command Module's (CM)
022274,000005: # Apollo Guidance Computer (AGC), for Apollo 11.
022275,000006: # Assembler: yaYUL
022276,000007: # Contact: Hartmuth Gutsche <hgutsche@xplornet.com>.
022277,000008: # Website: www.ibiblio.org/apollo.
022278,000009: # Pages: 514-524
022279,000010: # Mod history: 2009-05-09 HG Started adapting from the Colossus249/ file
022280,000011: # of the same name, using Comanche055 page
022281,000012: # images 0514.jpg - 0524.jpg.
022282,000013:
022283,000014: # This source code has been transcribed or otherwise adapted from digitized
022284,000015: # images of a hardcopy from the MIT Museum. The digitization was performed
022285,000016: # by Paul Fjeld, and arranged for by Deborah Douglas of the Museum. Many
022286,000017: # thanks to both. The images (with suitable reduction in storage size and
022287,000018: # consequent reduction in image quality as well) are available online at
022288,000019: # www.ibiblio.org/apollo. If for some reason you find that the images are
022289,000020: # illegible, contact me at info@sandroid.org about getting access to the
022290,000021: # (much) higher-quality images which Paul actually created.
022291,000022:
022292,000023: # Notations on the hardcopy document read, in part:
022293,000024:
022294,000025: # Assemble revision 055 of AGC program Comanche by NASA
022295,000026: # 2021113-051. 10:28 APR. 1, 1969
022296,000027:
022297,000028: # This AGC program shall also be referred to as
022298,000029: # Colossus 2A
022299,000030:
022300,000031: # Page 514
022301,000032: # SUBROUTINE NAME: V82CALL
022302,000033: # MOD NO: 0 DATE: 16 FEB 67
022303,000034: # MOD BY: R. R. BAIRNSFATHER LOG SECTION: R30
022304,000035: # MOD NO: 1 MOD BY: R. R. BAIRNSFATHER DATE: 11 APR 67 SR30.1 CHANGED TO ALLOW MONITOR OPERN
022305,000036: # MOD NO: 2 MOD BY: ALONSO DATE: 11 DEC 67 VB82 PROGRAM REWRITTEN
022306,000037: # MOD NO: 3 MOD BY: ALONSO DATE: 26 MAR 68 PROG MOD TO HANDLE DIF EARTH/MOON SCALE
022307,000038:
022308,000039: # NEW FUNCTIONAL DESCRIPTION: CALLED BY VERB 82 ENTER. PRIORITY 10.
022309,000040: # USED THROUGHOUT. CALCULATE AND DISPLAY ORBITAL PARAMETERS
022310,000041:
022311,000042: # 1. IF AVERAGE G IS OFF:
022312,000043: # FLASH DISPLAY V04N06. R2 INDICATES WHICH SHIP'S STATE VECTOR IS
022313,000044: # TO BE UPDATED. INITIAL CHOICE IS THIS SHIP (R2=1). ASTRONAUT
022314,000045: # CAN CHANGE TO OTHER SHIP BY V22EXE. WHERE X IS NOT EQ 1.
022315,000046: # SELECTED STATE VECTOR UPDATED BY THISPREC (OTHPREC).
022316,000047: # CALLS SR30.1 (WHICH CALLS TFFCONMU + TFFRP/RA) TO CALCULATE
022317,000048: # RPER (PERIGEE RADIUS), RAPO (APOGEE RADIUS), HPER (PERIGEE
022318,000049: # HEIGHT ABOVE LAUNCH PAD OR LAUNAR LANDING SITE), HARD (APOGEE
022319,000050: # HEIGHT AS ABOVE), TPER (TIME TO PERIGEE), TFF (TIME TO
022320,000051: # INTERSECT 300 KFT ABOVE PAD OR 35KFT ABOVE LANDING SITE).
022321,000052: # FLASH MONITOR V16N44 (HAPO, HPER, TFF). TFF IS -59MS59S IF IT WAS
022322,000053: # NOT COMPUTABLE, OTHERWISE IT INCREMENTS ONCE PER SECOND.
022323,000054: # ASTRONAUT HAS OPTION TO MONITOR TPER BY KEYING IN N 32 E.
022324,000055: # DISPLAY IS IN HMS, IS NEGATIVE (AS WAS TFF), AND INCREMENTS
022325,000056: # ONCE PER SECOND ONLY IF TFF DISPLAY WAS -59M59S.
022326,000057: # 2. IF AVERAGE G IS ON:
022327,000058: # CALLS SR30.1 APPROX EVERY TWO SECS. STATE VECTOR IS ALWAYS
022328,000059: # FOR THIS VEHICLE. V82 DOES NOT DISTURB STATE VECTOR. RESULTS
022329,000060: # OF SR30.1 ARE RAPO, RPER, HAPO, HPER, TPER, TFF.
022330,000061: # FLASH MONITOR V16N44 (HAPO, HPER, TFF).
022331,000062: # IF MODE IS P11, THEN CALL DELRSPL SO ASTRONAUT CAN MONITOR
022332,000063: # RESULTS BY N50E. SPLASH COMPUTATION DONE ONCE PER TWO SECS.
022333,000064: # ADDENDUM: HAPO AND HPER SHOULD BE CHANGED TO READ HAPOX AND HPERX IN THE
022334,000065: # ABOVE REMARKS.
022335,000066:
022336,000067: # CALLING SEQUENCE: VERB 82 ENTER.
022337,000068:
022338,000069: # SUBROUTINES CALLED: SR30.1, GOXDSPF
022339,000070: # MAYBE -- THISPREC, OTHPREC, LOADTIME, DELRSPL
022340,000071:
022341,000072: # NORMAL EXIT MODES: TC ENDEXT
022342,000073:
022343,000074: # ALARMS: NONE
022344,000075:
022345,000076: # OUTPUT: HAPOX (-29) M
022346,000077: # HPERX (-29) M
022347,000078: # RAPO (-29) M EARTH
022348,000079: # (-27) M MOON
022349,000080: # Page 515
022350,000081: # RPER (-29) M EARTH
022351,000082: # (-27) M MOON
022352,000083: # TFF (-28) CS CONTAINS NEGATIVE QUANTITY
022353,000084: # -TPER (-28) CS CONTAINS NEGATIVE QUANTITY
022354,000085: # RSP-RREC(-29) M IF DELRSPL CALLED
022355,000086:
022356,000087: # ERASABLE INITIALIZATION REQUIRED: STATE VECTOR.
022357,000088:
022358,000089: # DEBRIS: QPRET, RONE, VONE, TFF/RTMU, HPERMIN, RPADTEM, V82EMFLG.
022359,000090: # MAYBE: TSTART82, V82FLAGS, TDEC1.
022360,000091:
022361,000092: 13,2231 E4,1751 EBANK= HAPOX
022362,000093: 31,2332 BANK 31
022363,000094: 23,2000 SETLOC R30LOC
022364,000095: 23,2000 BANK
022365,000096: 23,2332 COUNT* $$/R30
022366,000097:
022367,000098: 23,2332 06006 V82CALL TC INTPRET
022368,000099: 23,2333 52014 BON GOTO
022369,000100: 23,2334 00716 AVEGFLAG
022370,000101: 23,2335 46566 V82GON # IF AVERAGE G ON
022371,000102: 23,2336 46337 V82GOFF # IF AVERAGE G OFF
022372,000103:
022373,000104: 23,2337 77776 V82GOFF EXIT # ALLOW ASTRONAUT TO SELECT VEHICLE
022374,000105: 23,2340 35016 CAF TWO # DESIRED FOR ORBITAL PARAMETERS
022375,000106: 23,2341 55051 TS OPTIONX
022376,000107: 23,2342 35017 CAF ONE
022377,000108: 23,2343 55052 TS OPTIONX +1
022378,000109: 23,2344 32406 CAF OPTIONVN # V 04 N 06
022379,000110: 23,2345 04662 TC BANKCALL
022380,000111: 23,2346 20561 CADR GOXDSPF
022381,000112: 23,2347 05534 TC ENDEXT # TERMINATE
022382,000113: 23,2350 02352 TC +2 # PROCEED
022383,000114: 23,2351 02344 TC -5 # DATA IN. OPTIONX +1 = 1 FOR THIS VEHIC.
022384,000115: # UNEQ 1 FOR OTHER VEHICLE.
022385,000116: 23,2352 35014 CAF BIT4 # 80 MS
022386,000117: 23,2353 05245 TC WAITLIST
022387,000118: 23,2354 E4,1743 EBANK= TFF
022388,000119: 23,2354 02531 46064 2CADR TICKTEST
022389,000120:
022390,000121: 23,2356 00003 RELINT
022391,000122: 23,2357 32410 V82GOFLP CAF TFFBANK # MAJOR RECYCLE LOOP ENTRY
022392,000123: 23,2360 54003 TS EBANK
022393,000124: 23,2361 35021 CAF ZERO
022394,000125: 23,2362 55742 TS V82FLAGS # ZERO FLAGS FOR TICKTEST, INHIBITS
022395,000126: # DECREMENTING OF TFF AND -TPER.
022396,000127: 23,2363 35063 CAF PRIO7
022397,000128: 23,2364 05147 TC FINDVAC # V82GOFF1 WILL EXECUTE STATE VECTOR
022398,000129: # Page 516
022399,000130: 23,2365 E4,1743 EBANK= TFF # UPDATE AND ORBIT CALCULATIONS FOR
022400,000131: 23,2365 02411 46064 2CADR V82GOFF1 # SELECTED VEHICLE ABOUT PROPER BODY.
022401,000132:
022402,000133: 23,2367 00003 RELINT
022403,000134: 23,2370 36214 V82STALL CAF THREE # STALL IN THIS LOOP AND WITHOLD V 16 N 44
022404,000135: 23,2371 71742 MASK V82FLAGS # UNTIL STATE VECTOR UPDATE SETS ONE OF
022405,000136: 23,2372 10000 CCS A # OUR FLAG BITS.
022406,000137: 23,2373 02400 TC FLAGGON # EXIT FROM STALL LOOP.
022407,000138: 23,2374 35041 CAF 1SEC
022408,000139: 23,2375 04662 TC BANKCALL
022409,000140: 23,2376 01732 CADR DELAYJOB
022410,000141: 23,2377 02370 TC V82STALL
022411,000142:
022412,000143: 23,2400 32407 FLAGGON CAF V16N44 # MONITOR HAPO,HPER,TFF.
022413,000144: 23,2401 04662 TC BANKCALL
022414,000145: 23,2402 20561 CADR GOXDSPF
022415,000146: 23,2403 05625 TC B5OFF # TERM THIS TELLS TICKTEST TO KILL ITSELF
022416,000147: 23,2404 05625 TC B5OFF # PROCEED DITTO
022417,000148: 23,2405 02357 TC V82GOFLP # RECYCLE RECOMPUTE STATE VECT + DISPLAY
022418,000149:
022419,000150: 23,2406 01014 OPTIONVN VN 0412
022420,000151: 23,2407 04054 V16N44 VN 1644
022421,000152: 23,2410 02343 TFFBANK ECADR TFF
022422,000153:
022423,000154: 23,2411 06006 V82GOFF1 TC INTPRET
022424,000155: 23,2412 77634 RTB
022425,000156: 23,2413 45510 LOADTIME
022426,000157: 23,2414 00041 STORE TDEC1 # TIME FOR STATE VECTOR UPDATE.
022427,000158: 23,2415 02325 STORE TSTART82 # TIME FOR INTERNAL USE.
022428,000159: 23,2416 77776 EXIT
022429,000160: 23,2417 41052 CS OPTIONX +1 # 1 FOR THIS VEHICLE, NOT 1 FOR OTHER
022430,000161: 23,2420 65017 AD ONE
022431,000162: 23,2421 00006 EXTEND
022432,000163: 23,2422 12446 BZF THISSHIP
022433,000164: 23,2423 06006 OTHSHIP TC INTPRET
022434,000165: 23,2424 77624 CALL # CALL STATE VECTOR UPDATE FOR OTHER SHIP.
022435,000166: 23,2425 27105 OTHPREC
022436,000167: 23,2426 77775 BOTHSHIP VLOAD # MOVE RESULTS INTO TFFCONIC STORAGE AREAS
022437,000168: 23,2427 00001 RATT # TO BE CALLED BY SR30.1.
022438,000169: 23,2430 26327 STOVL RONE # RATT AT (-29)M FOR EARTH OR MOON
022439,000170: 23,2431 00007 VATT
022440,000171: 23,2432 02335 STORE VONE # VATT AT (-7)M/CS FOR EARTH OR MOON
022441,000172: 23,2433 77743 DLOAD*
022442,000173: 23,2434 71321 1/RTMUE,2 # X2 IS 0 FOR EARTH CENTERED STATE VEC
022443,000174: # HG remark: In Comanche055 scan this line (5324) looks pretty much like 1/RTMUF.2 can not decide, leave it
022444,000175: # as it is in start source
022445,000176: 23,2435 00037 STORE TFF/RTMU # X2 IS 2 FOR MOON
022446,000177: 23,2436 77743 DLOAD* # AS LEFT BY THISPREC OR OTHPREC.
022447,000178: 23,2437 71315 MINPERE,2
022448,000179: 23,2440 02321 STORE HPERMIN # TFFRTMU, HPERMIN, AND RPADTEM ARE ALL
022449,000180: 23,2441 46135 SLOAD BHIZ # EARTH/MOON PARAMETERS AS SET HERE.
022450,000181: # Page 517
022451,000182: 23,2442 00050 X2
022452,000183: 23,2443 46463 EARTHPAD
022453,000184: 23,2444 77650 GOTO
022454,000185: 23,2445 46467 MOONPAD
022455,000186: 23,2446 06006 THISSHIP TC INTPRET
022456,000187: 23,2447 77624 CALL # CALL STATE VECTOR UPDATE FOR THIS SHIP.
022457,000188: 23,2450 27071 THISPREC
022458,000189: 23,2451 77650 GOTO
022459,000190: 23,2452 46426 BOTHSHIP
022460,000191:
022461,000192: # THE FOLLOWING CONSTANTS ARE PAIRWISE INDEXED. DO NOT SEPARATE PAIRS.
022462,000193:
022463,000194: 23,2453 27533 07571 1/RTMUM 2DEC* .45162595 E-4 B14*
022464,000195: 23,2455 25004 06702 1/RTMUE 2DEC* .50087529 E-5 B17*
022465,000196:
022466,000197: 23,2457 00001 11530 MINPERM 2DEC 10668 B-27 # 35 KFT MIN PERIGEE HEIGHT FOR MOON(-27)M
022467,000198: 23,2461 00002 31230 MINPERE 2DEC 91440 B-29 # 300 KFT (-29)M FOR EARTH
022468,000199:
022469,000200: 23,2463 43145 EARTHPAD DLOAD CLRGO # PAD 37-B RADIUS. SCALED AT (-29)M
022470,000201: 23,2464 05152 RPAD
022471,000202: 23,2465 04622 V82EMFLG # INDICATE EARTH SCALING FOR SR30.1
022472,000203: 23,2466 46473 BOTHPAD
022473,000204:
022474,000205: 23,2467 51575 MOONPAD VLOAD ABVAL # COMPUTE MOON PAD RADIUS FROM RLS VECTOR.
022475,000206: 23,2470 02026 RLS # SCALED AT (-27)M.
022476,000207: 23,2471 77614 SET
022477,000208: 23,2472 04462 V82EMFLG # INDICATE MOON SCALING FOR SR30.1
022478,000209: 23,2473 36323 BOTHPAD STCALL RPADTEM
022479,000210: 23,2474 46667 SR30.1 # CALCULATE ORBITAL PARAMETERS
022480,000211: 23,2475 77776 EXIT
022481,000212: 23,2476 31011 CA MODREG # ARE WE IN P00
022482,000213: 23,2477 00006 EXTEND
022483,000214: 23,2500 12645 BZF CANDEL # YES, DO DELRSPL
022484,000215: 23,2501 06006 SPLRET1 TC INTPRET
022485,000216: 23,2502 45234 RTB DSU
022486,000217: 23,2503 45510 LOADTIME
022487,000218: 23,2504 02325 TSTART82 # PRESENT TIME -- TIME V82GOFF1 BEGAN
022488,000219: 23,2505 02325 STORE TSTART82 # SAVE IT
022489,000220: 23,2506 53145 DLOAD BZE # SR30.1 SETS -TPER=0 IF HPER L/
022490,000221: 23,2507 02346 -TPER # HPERMIN (300 OR 35) KFT.
022491,000222: 23,2510 46521 TICKTFF # (-TPER = 0)
022492,000223: 23,2511 43345 TICKTPER DLOAD DAD # (-TPER NON ZERO) TFF WAS NOT COMPUTED.
022493,000224: 23,2512 02346 -TPER # BUT WAS SET TO 59M59S. DON'T DICK TFF, DO
022494,000225: 23,2513 02325 TSTART82 # TICK -TPER. DISPLAY BOTH.
022495,000226: 23,2514 02346 STORE -TPER # -TPER CORRECTED FOR TIME SINCE V82GOFF1
022496,000227: 23,2515 77776 EXIT # BEGAN.
022497,000228:
022498,000229: # Page 518
022499,000230: 23,2516 35017 CAF BIT1
022500,000231: 23,2517 55742 TS V82FLAGS # INFORMS TICKTEST TO INCREMENT ONLY -TPER
022501,000232: 23,2520 05217 TC ENDOFJOB
022502,000233:
022503,000234: 23,2521 43345 TICKTFF DLOAD DAD # (-TPER=0) TFF WAS COMPUTED. TICK TFF.
022504,000235: 23,2522 02344 TFF # DO NOT TICK -TPER. DISPLAY TFF, BUT NOT
022505,000236: 23,2523 02325 TSTART82 # -TPER
022506,000237: 23,2524 02344 STORE TFF # TFF CORRECTED FOR TIME SINCE V82GOFF1
022507,000238: 23,2525 77776 EXIT # BEGAN.
022508,000239: 23,2526 35016 CAF BIT2
022509,000240: 23,2527 55742 TS V82FLAGS # INFORMS TICKTEST TO INCREMENT ONLY TFF.
022510,000241: 23,2530 05217 TC ENDOFJOB
022511,000242:
022512,000243: 23,2531 35013 TICKTEST CAF BIT5 # THIS WAITLIST PROGRAM PERPETUATES ITSELF
022513,000244: 23,2532 71044 MASK EXTVBACT # ONCE A SEC UNTIL BIT 5 OF EXTVBACT =0.
022514,000245: 23,2533 10000 CCS A
022515,000246: 23,2534 02542 TC DOTICK
022516,000247: 23,2535 37662 CAF PRIO25
022517,000248: 23,2536 05134 TC NOVAC # TERMINATE V 82. CAN'T CALL ENDEXT IN RUPT.
022518,000249: 23,2537 1044 EBANK= EXTVBACT
022519,000250: 23,2537 05534 04062 2CADR ENDEXT
022520,000251:
022521,000252: 23,2541 05324 TC TASKOVER
022522,000253: 23,2542 35041 DOTICK CAF 1SEC # RE-REQUEST TICKTEST.
022523,000254: 23,2543 05245 TC WAITLIST
022524,000255: 23,2544 E4,1743 EBANK= TFF
022525,000256: 23,2544 02531 46064 2CADR TICKTEST
022526,000257:
022527,000258: 23,2546 36214 CAF THREE
022528,000259: 23,2547 71742 MASK V82FLAGS
022529,000260: 23,2550 50000 INDEX A
022530,000261: 23,2551 02552 TC +1
022531,000262: 23,2552 05324 TC TASKOVER # IF NO FLAGBITS SET DONT' CHANGE TFF OR
022532,000263: # -TPER, BUT CONTINUE LOOP.
022533,000264: 23,2553 02561 TC TPERTICK # ONLY BIT 1 SET. INCR -TPER BY 1 SEC.
022534,000265: 23,2554 35041 TFFTICK CAF 1SEC # ONLY BIT 2 SET. INCR TFF BY 1 SEC.
022535,000266: 23,2555 54001 TS L
022536,000267: 23,2556 35021 CAF ZERO
022537,000268: 23,2557 21744 DAS TFF
022538,000269: 23,2560 05324 TC TASKOVER
022539,000270: 23,2561 35041 TPERTICK CAF 1SEC
022540,000271: 23,2562 54001 TS L
022541,000272: 23,2563 35021 CAF ZERO
022542,000273: 23,2564 21746 DAS -TPER
022543,000274: 23,2565 05324 TC TASKOVER
022544,000275: # Page 519
022545,000276: 23,2566 77776 V82GON EXIT # AVERAGE G ON. USE CURRENT STATE VECTOR
022546,000277: # FOR ORBITAL PARAMETER CALCULATIONS.
022547,000278: 23,2567 35063 CAF PRIO7 # LESS THAN LAMBERT
022548,000279: 23,2570 05147 TC FINDVAC # V82GON1 WILL PERFORM ORBIT CALCULATIONS
022549,000280: 23,2571 E4,1743 EBANK= TFF # ABOUT PROPER BODY APPROX ONCE PER SEC.
022550,000281: 23,2571 02604 46064 2CADR V82GON1
022551,000282:
022552,000283: 23,2573 00003 RELINT
022553,000284: 23,2574 10067 CCS NEWJOB # WITHOLD V16 N44 UNTIL FIRST ORBIT CALC
022554,000285: 23,2575 05164 TC CHANG1 # IS DONE. NOTE: V82GON1 (PRIO7, FINDVAC
022555,000286: # JOB) IS COMPLETED BEFORE V82GON (PRIO7,
022556,000287: # NOVAC JOB).
022557,000288: 23,2576 32407 V82REDSP CAF V16N44 # MONITOR HAPO, HPER, TFF
022558,000289: 23,2577 04662 TC BANKCALL
022559,000290: 23,2600 20561 CADR GOXDSPF
022560,000291: 23,2601 05625 TC B5OFF # TERM THIS TELLS V82GON1 TO KILL ITSELF.
022561,000292: 23,2602 05625 TC B5OFF # PROC DITTO.
022562,000293: 23,2603 02576 TC V82REDSP # RECYCLE
022563,000294:
022564,000295: 23,2604 06006 V82GON1 TC INTPRET # THIS EXEC PROGRAM PERPETUATES ITSELF
022565,000296: # ONCE A SEC UNTIL BIT 5 OF EXTVBACT =0.
022566,000297: 23,2605 52175 VLOAD GOTO # HOLDS OFF CCS NEWJOB BETWEEN RN AND
022567,000298: 23,2606 01171 RN # VN FETCH SO RN, VN ARE FROM SAME
022568,000299: 23,2607 46610 NEXTLINE # STATE VECTOR UPDATE.
022569,000300: 23,2610 26327 NEXTLINE STOVL RONE # RN AT (-29)M FOR EARTH OR MOON
022570,000301: 23,2611 01177 VN
022571,000302: 23,2612 02335 STORE VONE # VN AT (-7)M/CS FOR EARTH OR MOON
022572,000303: 23,2613 52014 BON GOTO
022573,000304: 23,2614 00315 AMOONFLG # FLAG INDICATES BODY ABOUT WHICH ORBITAL
022574,000305: 23,2615 46617 MOONGON # CALCULATIONS ARE TO BE PERFORMED.
022575,000306: 23,2616 46630 EARTHGON # IF SET - MOON, IF RESET - EARTH.
022576,000307:
022577,000308: 23,2617 71214 MOONGON SET DLOAD
022578,000309: 23,2620 04462 V82EMFLG # INDICATE MOON SCALING FOR SR30.1
022579,000310: 23,2621 06454 1/RTMUM # LUNAR PARAMETERS LOADED HERE FOR SR30.1
022580,000311: 23,2622 14037 STODL TFF/RTMU
022581,000312: 23,2623 06460 MINPERM
022582,000313: 23,2624 26321 STOVL HPERMIN
022583,000314: 23,2625 02026 RLS # SCALED AT (-27)M
022584,000315: 23,2626 52046 ABVAL GOTO
022585,000316: 23,2627 46637 V82GON2
022586,000317: 23,2630 71214 EARTHGON CLEAR DLOAD
022587,000318: 23,2631 04662 V82EMFLG # INDICATE EARTH SCALING FOR SR30.1
022588,000319: 23,2632 06456 1/RTMUE # EARTH PARAMETERS LOADED HERE FOR SR30.1
022589,000320: 23,2633 14037 STODL TFF/RTMU
022590,000321: 23,2634 06462 MINPERE
022591,000322: 23,2635 16321 STODL HPERMIN
022592,000323: 23,2636 05152 RPAD
022593,000324: 23,2637 36323 V82GON2 STCALL RPADTEM # COMMON CODE FOR EARTH & MOON.
022594,000325: 23,2640 46667 SR30.1
022595,000326: # Page 520
022596,000327: 23,2641 77776 EXIT
022597,000328: 23,2642 05364 TC CHECKMM
022598,000329: 23,2643 00013 DEC 11 B-14
022599,000330: 23,2644 02657 TC V82GON3 # NOT IN MODE 11.
022600,000331: 23,2645 06006 CANDEL TC INTPRET # IN MODE 11 OR 00
022601,000332: 23,2646 77624 CALL
022602,000333: 23,2647 27442 INTSTALL # DELRSPL DOES INTWAKE
022603,000334: 23,2650 45145 DLOAD CALL
022604,000335: 23,2651 02344 TFF
022605,000336: 23,2652 64017 DELRSPL # RETURN IS TO NEXT LINE (SPLRET).
022606,000337: 23,2653 77776 SPLRET EXIT
022607,000338:
022608,000339: 23,2654 31011 CA MODREG
022609,000340: 23,2655 00006 EXTEND
022610,000341: 23,2656 12501 BZF SPLRET1
022611,000342: 23,2657 35013 V82GON3 CAF BIT5
022612,000343: 23,2660 71044 MASK EXTVBACT # SEE IF ASTRONAUT HAS SIGNALLED TERMINATE
022613,000344: 23,2661 00006 EXTEND
022614,000345: 23,2662 15534 BZF ENDEXT # YES, TERMINATE VB 82 LOOP
022615,000346: 23,2663 35041 CAF 1SEC
022616,000347: 23,2664 04662 TC BANKCALL # WAIT ONE SECOND BEFORE REPEATING
022617,000348: 23,2665 01732 CADR DELAYJOB # ORBITAL PARAMETER COMPUTATION.
022618,000349: 23,2666 02604 TC V82GON1
022619,000350:
022620,000351: # Page 521
022621,000352: # SUBROUTINE NAME: SR30.1
022622,000353: # MOD NO: 0 DATE: 16 FEB 67
022623,000354: # MOD BY: R. R. BAIRNSFATHER LOG SECTION: R32
022624,000355: # MOD NO: 1 MOD BY: R. R. BAIRNSFATHER DATE: 11 APR 67 SR30.1 CHANGED TO ALLOW MONITOR OPERN
022625,000356: # MOD NO: 2 MOD BY: R. R. BAIRNSFATHER DATE: 14 APR 67 ADD OVFL CK FOR RAPO
022626,000357: # MOD NO: 3 MOD BY ALONSO DATE: 11 DEC 67 SUBROUTINE REWRITTEN
022627,000358: # MOD NO: 4 MOD BY ALONSO DATE: 26 MAR 68 PROG MOD TO HANDLE DIF EARTH/MOON SCALE
022628,000359: # MOD NO: 5 MOD BY: R. R. BAIRNSFATHER DATE: 6 AUG 68 OVFL CK FOR HAPO & HPER. VOIDS MOD #2.
022629,000360:
022630,000361: # NEW FUNCTIONAL DESCRIPTION: ORBITAL PARAMETERS DISPLAY FOR NOUNS 32 AND 44.
022631,000362: # SR30.1 CALLS TFFCONMU AND TFFRP/RA TO CALCULATE RPER (PERIGEE RADIUS),
022632,000363: # RAPO (APOGEE RADIUS), HPER (PERIGEE HEIGHT ABOVE LAUNCH PAD OR LUNAR
022633,000364: # LANDING SITE), HAPO (APOGEE HEIGHT AS ABOVE), TPER (TIME TO PERIGEE),
022634,000365: # TFF (TIME TO INTERSECT 300 KFT ABOVE PAD OR 35KFT ABOVE LANDING SITE).
022635,000366: # IF HPER IS GREATER THAN OR EQUAL TO HPERMIN, CALCULATES TPER AND STORES
022636,000367: # NEGATIVE. IN -TPER. OTHERWISE STORES +0 IN -TPER. WHENEVER TPER IS
022637,000368: # CALCULATED, TFF IS NOT COMPUTABLE AND DEFAULTS TO -59MIN 59SEC. IF HAPO
022638,000369: # WOULD EXCEED 9999.9 NM, IT IS LIMITED TO THAT VALUE FOR DISPLAY.
022639,000370:
022640,000371: # ADDENDUM: HAPO AND HPER SHOULD BE CHANGED TO READ HAPOX AND HPERX IN THE
022641,000372: # ABOVE REMARKS.
022642,000373:
022643,000374: # CALLING SEQUENCE: CALL
022644,000375: # SR30.1
022645,000376:
022646,000377: # SUBROUTINES CALLED: TFFCONMU, TFFRP/RA, CALCTPER, CALCTFF
022647,000378:
022648,000379: # NORMAL EXIT MODE: CALLING LINE +1 (STILL IN INTERPRETIVE MODE)
022649,000380:
022650,000381: # ALARMS: NONE
022651,000382:
022652,000383: # OUTPUT: RAPO (-29) M EARTH APOGEE RADIUS EARTH CENTERED COORD.
022653,000384: # (-27) M MOON MOON CENTERED COORD.
022654,000385: # RPER (-29) M EARTH PERIGEE RADIUS EARTH CENTERED COORD.
022655,000386: # (-27) M MOON MOON CENTERED COORD.
022656,000387: # HAPOX (-29) M APOGEE ALTITUDE ABOVE PAD OR LAND. SITE MAX VALUE LIMITED TO 9999.9 NM.
022657,000388: # HPERX (-29) M PERIGEE ALT. ABOVE PAD OR LAND. SITE MAX VALUE LIMITED TO 9999.9 NM.
022658,000389: # TFF (-28) CS TIME TO 300KFT OR 35KFT ALTITUDE
022659,000390: # -TPER (-28) CS TIME TO PERIGEE
022660,000391:
022661,000392: # ERASABLE INITIALIZATION REQUIRED -
022662,000393: # TFF/RTMU (+17) EARTH RECIPROCAL OF PROPER GRAV CONSTANT FOR
022663,000394: # (+14) MOON EARTH OR MOON = 1/SQRT(MU).
022664,000395: # RONE (-29) M STATE VECTOR
022665,000396: # VONE (-7) M/CS STATE VECTOR
022666,000397: # RPADTEM (-29) M EARTH RADIUS OF LAUNCH PAD OR LUNAR LANDING
022667,000398: # (-27) M MOON SITE.
022668,000399: # HPERMIN (-29) M EARTH (300 OR 35) KFT MINIMUM PERIGEE ALTITUDE
022669,000400: # (-27) M MOON ABOVE LAUNCH PAD OR LUNAR LANDING SITE.
022670,000401: # V82EMFLG (INT SW BIT) RESET FOR EARTH, SET FOR MOON.
022671,000402:
022672,000403: # DEBRIS: QPRET, PDL, S2
022673,000404:
022674,000405: # Page 522
022675,000406: 23,2667 COUNT* $$/SR30S
022676,000407:
022677,000408: 23,2667 44001 SR30.1 SETPD STQ # INITIALIZE PUSHDOWN LIST.
022678,000409: 23,2670 00001 0
022679,000410: 23,2671 00051 S2
022680,000411: # SR30.1 INPUT: RONE AT (-29)M EARTH/MOON
022681,000412: # VONE AT (-7)M/CS
022682,000413: # TFFCONMU, TFFRP/RA, CALCTPER, AND CALCTFF
022683,000414: # CALLS REQUIRE:
022684,000415: # EARTH CENTERED (NO RESCALING REQUIRED)
022685,000416: # RONE SCALED TO B-29 M
022686,000417: # VONE SCALED TO B-7 M/CS
022687,000418: # MOON CENTERED (RESCALING REQUIRED)
022688,000419: # RONE SCALED TO B-27 M
022689,000420: # VONE SCALED TO B-5 M/CS
022690,000421: 23,2672 77214 BOFF VLOAD
022691,000422: 23,2673 04742 V82EMFLG # OFF FOR EARTH, ON FOR MOON.
022692,000423: 23,2674 46703 TFFCALLS
022693,000424: 23,2675 02327 RONE
022694,000425: 23,2676 77752 VSL2
022695,000426: 23,2677 26327 STOVL RONE
022696,000427: 23,2700 02335 VONE
022697,000428: 23,2701 77752 VSL2
022698,000429: 23,2702 02335 STORE VONE
022699,000430: 23,2703 77624 TFFCALLS CALL
022700,000431: 23,2704 56760 TFFCONMU
022701,000432: 23,2705 77624 CALL # TFFRP/RA COMPUTES RAPO,RPER.
022702,000433: 23,2706 57026 TFFRP/RA
022703,000434: # RETURNS WITH RAPO IN D(MPAC).
022704,000435: 23,2707 77625 DSU
022705,000436: 23,2710 02323 RPADTEM
022706,000437: 23,2711 64414 BOFF SR2R # NEED HAPO AT (-29)M FOR DISPLAY.
022707,000438: # IF MOON CENTERED, RESCALE FROM (-27)M.
022708,000439: # IF EARTH CENTERED ALREADY AT (-29)M.
022709,000440: 23,2712 04742 V82EMFLG # OFF FOR EARTH, ON FOR MOON.
022710,000441: 23,2713 46714 +1
022711,000442: 23,2714 77624 CALL # IF HAPO > MAXNM, SET HAPO =9999.9 NM.
022712,000443: 23,2715 46754 MAXCHK # OTHERWISE STORE (RAPO-RPADTEM) IN HAPO.
022713,000444: 23,2716 16352 STORHAPO STODL HAPOX
022714,000445: 23,2717 00017 RPER
022715,000446: 23,2720 77625 DSU
022716,000447: 23,2721 02323 RPADTEM # GIVES HPER AT (-29)M EARTH, (-27)M MOON.
022717,000448: 23,2722 00161 STORE MPAC +4 # SAVE THIS FOR COMPARISON TO HPERMIN.
022718,000449: 23,2723 64414 BOFF SR2R # NEED HPER AT (-29)M FOR DISPLAY.
022719,000450: # IF MOON CENTERED, RESCALE FROM (-27)M.
022720,000451: # IF EARTH CENTERED ALREADY AT (-29)M.
022721,000452: 23,2724 04742 V82EMFLG # OFF FOR EARTH, ON FOR MOON.
022722,000453: 23,2725 46726 +1
022723,000454: 23,2726 77624 CALL # IF HPER > MAXNM, SET HPER = 9999.9 NM.
022724,000455: 23,2727 46754 MAXCHK
022725,000456: # Page 523
022726,000457: 23,2730 16354 STORHPER STODL HPERX # STORE (RPER - RPADTEM) INTO HPERX.
022727,000458: 23,2731 00161 MPAC +4
022728,000459: 23,2732 51025 DSU BPL # HPERMIN AT (-29)M FOR EARTH, (-27)M MOON
022729,000460: 23,2733 02321 HPERMIN # IF HPER L/ HPERMIN (300 OR 35) KFT,
022730,000461: 23,2734 46740 DOTPER # THEN ZERO INTO -TPER.
022731,000462: 23,2735 52145 DLOAD GOTO # OTHERWISE CALCULATE TPER.
022732,000463: 23,2736 15335 HI6ZEROS
022733,000464: 23,2737 46744 SKIPTPER
022734,000465: 23,2740 45145 DOTPER DLOAD CALL
022735,000466: 23,2741 00017 RPER
022736,000467: 23,2742 57064 CALCTPER
022737,000468: 23,2743 77676 DCOMP # TPER IS PUT NEG INTO -TPER.
022738,000469: 23,2744 16346 SKIPTPER STODL -TPER
022739,000470: 23,2745 02321 HPERMIN # HPERMIN AT (-29)M FOR EARTH, (-27)M MOON
022740,000471: 23,2746 45015 DAD CALL
022741,000472: 23,2747 02323 RPADTEM # RPADTEM AT (-29)M FOR EARTH, (-27)M MOON
022742,000473: 23,2750 57067 CALCTFF # GIVES 59M59S FOR TFF IF RPER G/
022743,000474: 23,2751 77676 DCOMP # HPERMIN + RPADTEM. (TPER WAS NON ZERO)
022744,000475: 23,2752 36344 STCALL TFF # OTHERWISE COMPUTES TFF. (GOTO)
022745,000476: 23,2753 00051 S2
022746,000477:
022747,000478: 23,2754 51025 MAXCHK DSU BPL # IF C(MPAC) > 9999.9 NM. MPAC = 9999.9 NM.
022748,000479: 23,2755 06764 MAXNM
022749,000480: 23,2756 46761 +3 # OTHERWISE C(MPAC) = B(MPAC).
022750,000481: 23,2757 43415 DAD RVQ
022751,000482: 23,2760 06764 MAXNM
022752,000483: 23,2761 43545 +3 DLOAD RVQ # (USED BY P30 - P37 ALSO)
022753,000484: 23,2762 06764 MAXNM
022754,000485:
022755,000486: 23,2763 01065 05603 MAXNM 2OCT 0106505603
022756,000487:
022757,000488: # Page 524
022758,000489:
022759,000490: # There is no source code on this page --- HG 2009
End of include-file R30.agc. Parent file is MAIN.agc