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 Luminary 131 (Apollo 13)
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 001 OF AGC PROGRAM LMY99 BY NASA 2021112-061 20'35 OCT. 28,1968Note that the date is the date of the printout, not the date of the program revision. |
030607,000002: ## Copyright: Public domain.
030608,000003: ## Filename: R30.agc
030609,000004: ## Purpose: Part of the source code for Luminary 1A build 099.
030610,000005: ## It is part of the source code for the Lunar Module's (LM)
030611,000006: ## Apollo Guidance Computer (AGC), for Apollo 11.
030612,000007: ## Assembler: yaYUL
030613,000008: ## Contact: Ron Burkey <info@sandroid.org>.
030614,000009: ## Website: www.ibiblio.org/apollo.
030615,000010: ## Pages: 712-722
030616,000011: ## Mod history: 2009-05-19 RSB Adapted from the corresponding
030617,000012: ## Luminary131 file, using page
030618,000013: ## images from Luminary 1A.
030619,000014: ## 2009-06-07 RSB Removed a space between two components of
030620,000015: ## a 2OCT that isn't legal in yaYUL.
030621,000016: ## 2016-12-14 RSB Proofed text comments with octopus/ProoferComments
030622,000017: ## and corrected the errors found.
030623,000018: ## 2017-02-08 RSB Comment-text fixes discovered while proofing Artemis 72.
030624,000019: ## 2017-03-16 RSB Comment-text fixes identified in 5-way
030625,000020: ## side-by-side diff of Luminary 69/99/116/131/210.
030626,000021: ## 2017-03-17 RSB Comment-text fixes identified in diff'ing
030627,000022: ## Luminary 99 vs Comanche 55.
030628,000023:
030629,000024: ## This source code has been transcribed or otherwise adapted from
030630,000025: ## digitized images of a hardcopy from the MIT Museum. The digitization
030631,000026: ## was performed by Paul Fjeld, and arranged for by Deborah Douglas of
030632,000027: ## the Museum. Many thanks to both. The images (with suitable reduction
030633,000028: ## in storage size and consequent reduction in image quality as well) are
030634,000029: ## available online at www.ibiblio.org/apollo. If for some reason you
030635,000030: ## find that the images are illegible, contact me at info@sandroid.org
030636,000031: ## about getting access to the (much) higher-quality images which Paul
030637,000032: ## actually created.
030638,000033: ##
030639,000034: ## Notations on the hardcopy document read, in part:
030640,000035: ##
030641,000036: ## Assemble revision 001 of AGC program LMY99 by NASA 2021112-61
030642,000037: ## 16:27 JULY 14, 1969
030643,000038:
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Page 712 |
030645,000040: # SUBROUTINE NAME: V82CALL
030646,000041: # MOD NO: 0 DATE: 16 FEB 67
030647,000042: # MOD BY: RR BAIRNSFATHER LOG SECTION: R30
030648,000043: # MOD NO: 1 MOD BY: RR BAIRNSFATHER DATE: 11 APR 67 SR30.1 CHANGED TO ALLOW MONITOR OPERN
030649,000044: # MOD NO: 2 MOD BY ALONSO DATE: 11 DEC 67 VB82 PROGRAM REWRITTEN
030650,000045: # MOD NO: 3 MOD BY ALONSO DATE: 26 MAR 68 PROG MOD TO HANDLE DIF EARTH/MOON SCALE
030651,000046:
030652,000047: # NEW FUNCTIONAL DESCRIPTION: CALLED BY VERB 82 ENTER. PRIORITY 10
030653,000048: # USED THROUGHOUT. CALCULATE AND DISPLAY ORBITAL PARAMETERS
030654,000049:
030655,000050: # 1. IF AVERAGE G IS OFF:
030656,000051: # FLASH DISPLAY V04N06. R2 INDICATES WHICH SHIP'S STATE VECTOR IS
030657,000052: # TO BE UPDATED. INITIAL CHOICE IS THIS SHIP (R2=1). ASTRONAUT
030658,000053: # CAN CHANGE TO OTHER SHIP BY V22EXE, WHERE X NOT EQ 1.
030659,000054: # SELECTED STATE VECTOR UPDATED BY THISPREC (OTHPREC).
030660,000055: # CALLS SR30.1 (WHICH CALLS TFFCONMU + TFFRP/RA) TO CALCULATE
030661,000056: # RPER (PERIGEE RADIUS), RAPO (APOGEE RADIUS), HPER (PERIGEE
030662,000057: # HEIGHT ABOVE LAUNCH PAD OR LUNAR LANDING SITE), HAPO (APOGEE
030663,000058: # HEIGHT AS ABOVE), TPER (TIME TO PERIGEE), TFF (TIME TO
030664,000059: # INTERSECT 300 KFT ABOVE PAD OR 35KFT ABOVE LANDING SITE).
030665,000060: # FLASH MONITOR V16N44 (HAPO, HPER, TFF). TFF IS -59M59S IF IT WAS
030666,000061: # NOT COMPUTABLE, OTHERWISE IT INCREMENTS ONCE PER SECOND.
030667,000062: # ASTRONAUT HAS OPTION TO MONITOR TPER BY KEYING IN N 32 E.
030668,000063: # DISPLAY IS IN HMS, IS NEGATIVE (AS WAS TFF), AND INCREMENTS
030669,000064: # ONCE PER SECOND ONLY IF TFF DISPLAY WAS -59M59S.
030670,000065: # 2. IF AVERAGE G IS ON:
030671,000066: # CALLS SR30.1 APPROX EVERY TWO SECS. STATE VECTOR IS ALWAYS
030672,000067: # FOR THIS VEHICLE. V82 DOES NOT DISTURB STATE VECTOR. RESULTS
030673,000068: # OF SR30.1 ARE RAPO, RPER, HAPO, HPER, TPER, TFF.
030674,000069: # FLASH MONITOR V16N44 (HAPO, HPER, TFF).
030675,000070: # ADDENDUM: HAPO AND HPER SHOULD BE CHANGED TO READ HAPOX AND HPERX IN THE
030676,000071: # ABOVE REMARKS.
030677,000072:
030678,000073: # CALLING SEQUENCE: VERB 82 ENTER.
030679,000074:
030680,000075: # SUBROUTINES CALLED: SR30.1, GOXDSPF
030681,000076: # MAYBE - THISPREC, OTHPREC, LOADTIME, DELRSPL
030682,000077:
030683,000078: # NORMAL EXIT MODES: TC ENDEXT
030684,000079:
030685,000080: # ALARMS: NONE
030686,000081:
030687,000082: # OUTPUT: HAPOX (-29) M
030688,000083: # HPERX (-29) M
030689,000084: # RAPO (-29) M EARTH
030690,000085: # (-27) M MOON
030691,000086: # RPER (-29) M EARTH
030692,000087: # (-27) M MOON
030693,000088: # TFF (-28) CS CONTAINS NEGATIVE QUANTITY
030694,000089: # -TPER (-28) CS CONTAINS NEGATIVE QUANTITY
030695,000090:
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Page 713 |
030697,000092: # ERASABLE INITIALIZATION REQUIRED: STATE VECTOR.
030698,000093:
030699,000094: # DEBRIS: QPRET, RONE, VONE, TFF/RTMU, HPERMIN, RPADTEM, V82EMFLG.
030700,000095: # MAYBE: TSTART82, V82FLAGS, TDEC1.
030701,000096:
030702,000097: 13,2351 E4,1517 EBANK= HAPOX
030703,000098: 31,2144 BANK 31
030704,000099: 22,2000 SETLOC R30LOC
030705,000100: 22,2000 BANK
030706,000101: 22,3242 COUNT* $$/R30
030707,000102:
030708,000103: 22,3242 06037 V82CALL TC INTPRET
030709,000104: 22,3243 52014 BON GOTO
030710,000105: 22,3244 03712 AVEGFLAG
030711,000106: 22,3245 45465 V82GON # IF AVERAGE G ON
030712,000107: 22,3246 45247 V82GOFF # IF AVERAGE G OFF
030713,000108:
030714,000109: 22,3247 77776 V82GOFF EXIT # ALLOW ASTRONAUT TO SELECT VEHICLE
030715,000110: 22,3250 34752 CAF TWO # DESIRED FOR ORBITAL PARAMETERS
030716,000111: 22,3251 55051 TS OPTIONX # CALCULATION AND DISPLAY.
030717,000112: 22,3252 34753 CAF ONE
030718,000113: 22,3253 55052 TS OPTIONX +1
030719,000114: 22,3254 33316 CAF OPTIONVN # V 04 N 06
030720,000115: 22,3255 04616 TC BANKCALL
030721,000116: 22,3256 20334 CADR GOXDSPF
030722,000117: 22,3257 05472 TC ENDEXT # TERMINATE
030723,000118: 22,3260 03262 TC +2 # PROCEED
030724,000119: 22,3261 03254 TC -5 # DATA IN. OPTION1+1 = 1 FOR THIS VEHICLE.
030725,000120: # UNEQ 1 FOR OTHER VEHICLE.
030726,000121: 22,3262 34750 CAF BIT4 # 80 MS
030727,000122: 22,3263 05203 TC WAITLIST
030728,000123: 22,3264 E4,1540 EBANK= TFF
030729,000124: 22,3264 03430 44064 2CADR TICKTEST
030730,000125:
030731,000126: 22,3266 00003 RELINT
030732,000127: 22,3267 33320 V82GOFLP CAF TFFBANK # MAJOR RECYCLE LOOP ENTRY
030733,000128: 22,3270 54003 TS EBANK
030734,000129: 22,3271 34755 CAF ZERO
030735,000130: 22,3272 55537 TS V82FLAGS # ZERO FLAGS FOR TICKTEST. INHIBITS
030736,000131: # DECREMENTING OF TFF AND -TPER.
030737,000132: 22,3273 35021 CAF PRIO7
030738,000133: 22,3274 05105 TC FINDVAC # V82GOFF1 WILL EXECUTE STATE VECTOR
030739,000134: 22,3275 E4,1540 EBANK= TFF # UPDATE AND ORBIT CALCULATIONS FOR
030740,000135: 22,3275 03321 44064 2CADR V82GOFF1 # SELECTED VEHICLE ABOUT PROPER BODY.
030741,000136:
030742,000137: 22,3277 00003 RELINT
030743,000138: 22,3300 36245 V82STALL CAF THREE # STALL IN THIS LOOP AND WITHOLD V 16 N 44
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Page 714 |
030745,000140: 22,3301 71537 MASK V82FLAGS # UNTIL STATE VECTOR UPDATE SETS ONE OF
030746,000141: 22,3302 10000 CCS A # OUR FLAG BITS.
030747,000142: 22,3303 03310 TC FLAGGON # EXIT FROM STALL LOOP.
030748,000143: 22,3304 34777 CAF 1SEC
030749,000144: 22,3305 04616 TC BANKCALL
030750,000145: 22,3306 01735 CADR DELAYJOB
030751,000146: 22,3307 03300 TC V82STALL
030752,000147:
030753,000148: 22,3310 33317 FLAGGON CAF V16N44 # MONITOR HAPO,HPER,TFF.
030754,000149: 22,3311 04616 TC BANKCALL
030755,000150: 22,3312 20334 CADR GOXDSPF
030756,000151: 22,3313 05563 TC B5OFF # TERM THIS TELLS TICKTEST TO KILL ITSELF
030757,000152: 22,3314 05563 TC B5OFF # PROCEED DITTO
030758,000153: 22,3315 03267 TC V82GOFLP # RECYCLE RECOMPUTE STATE VECT + DISPLAY
030759,000154:
030760,000155: 22,3316 01014 OPTIONVN VN 412
030761,000156: 22,3317 04054 V16N44 VN 1644
030762,000157: 22,3320 02140 TFFBANK ECADR TFF
030763,000158:
030764,000159: 22,3321 06037 V82GOFF1 TC INTPRET
030765,000160: 22,3322 77634 RTB
030766,000161: 22,3323 21573 LOADTIME
030767,000162: 22,3324 00041 STORE TDEC1 # TIME FOR STATE VECTOR UPDATE.
030768,000163: 22,3325 02205 STORE TSTART82 # TIME FOR INTERNAL USE.
030769,000164: 22,3326 77776 EXIT
030770,000165: 22,3327 41052 CS OPTIONX +1 # 1 FOR THIS VEHICLE, NOT 1 FOR OTHER.
030771,000166: 22,3330 64753 AD ONE
030772,000167: 22,3331 00006 EXTEND
030773,000168: 22,3332 13356 BZF THISSHIP
030774,000169: 22,3333 06037 OTHSHIP TC INTPRET
030775,000170: 22,3334 77624 CALL # CALL STATE VECTOR UPDATE FOR OTHER SHIP.
030776,000171: 22,3335 27043 OTHPREC
030777,000172: 22,3336 77775 BOTHSHIP VLOAD # MOVE RESULTS INTO TFFCONIC STORAGE AREAS
030778,000173: 22,3337 00001 RATT # TO BE CALLED BY SR30.1.
030779,000174: 22,3340 26207 STOVL RONE # RATT AT (-29)M FOR EARTH OR MOON
030780,000175: 22,3341 00007 VATT
030781,000176: 22,3342 02215 STORE VONE # VATT AT (-7)M/CS FOR EARTH OR MOON
030782,000177: 22,3343 77743 DLOAD*
030783,000178: 22,3344 73774 1/RTMUE,2 # X2 IS 0 FOR EARTH CENTERED STATE VEC
030784,000179: 22,3345 00037 STORE TFF/RTMU # X2 IS 2 FOR MOON
030785,000180: 22,3346 77743 DLOAD* # AS LEFT BY THISPREC OR OTHPREC.
030786,000181: 22,3347 72411 MINPERE,2
030787,000182: 22,3350 02201 STORE HPERMIN # TFFRTMU, HPERMIN AND RPADTEM ARE ALL
030788,000183: 22,3351 46135 SLOAD BHIZ # EARTH/MOON PARAMETERS AS SET HERE.
030789,000184: 22,3352 00050 X2
030790,000185: 22,3353 45367 EARTHPAD
030791,000186: 22,3354 77650 GOTO
030792,000187: 22,3355 45373 MOONPAD
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Page 715 |
030794,000189: 22,3356 06037 THISSHIP TC INTPRET
030795,000190: 22,3357 77624 CALL # CALL STATE VECTOR UPDATE FOR THIS SHIP.
030796,000191: 22,3360 27057 THISPREC
030797,000192: 22,3361 77650 GOTO
030798,000193: 22,3362 45336 BOTHSHIP
030799,000194:
030800,000195: # THE FOLLOWING CONSTANTS ARE PAIRWISE INDEXED. DO NOT SEPARATE PAIRS.
030801,000196:
030802,000197: 22,3363 00001 11530 MINPERM 2DEC 10668 B-27 # 35 KFT MIN PERIGEE HEIGHT FOR MOON(-27)M
030803,000198:
030804,000199: 22,3365 00002 31230 MINPERE 2DEC 91440 B-29 # 300 KFT (-29)M FOR EARTH
030805,000200:
030806,000201: 22,3367 43145 EARTHPAD DLOAD CLRGO # PAD 37-B RADIUS. SCALED AT (-29)M.
030807,000202: 22,3370 06315 RPAD
030808,000203: 22,3371 03635 V82EMFLG # INDICATE EARTH SCALING FOR SR30.1
030809,000204: 22,3372 45377 BOTHPAD
030810,000205:
030811,000206: 22,3373 51575 MOONPAD VLOAD ABVAL # COMPUTE MOON PAD RADIUS FROM RLS VECTOR.
030812,000207: 22,3374 02023 RLS # SCALED AT (-27)M.
030813,000208: 22,3375 77614 SET
030814,000209: 22,3376 03475 V82EMFLG # INDICATE MOON SCALING FOR SR30.1
030815,000210: 22,3377 36203 BOTHPAD STCALL RPADTEM
030816,000211: 22,3400 45551 SR30.1 # CALCULATE ORBITAL PARAMETERS
030817,000212: 22,3401 45234 RTB DSU
030818,000213: 22,3402 21573 LOADTIME
030819,000214: 22,3403 02205 TSTART82 # PRESENT TIME - TIME V82GOFF1 BEGAN
030820,000215: 22,3404 02205 STORE TSTART82 # SAVE IT
030821,000216: 22,3405 53145 DLOAD BZE # SR30.1 SETS -TPER=0 IF HPER L/
030822,000217: 22,3406 02143 -TPER # HPERMIN (300 OR 35) KFT.
030823,000218: 22,3407 45420 TICKTIFF # (-TPER = 0)
030824,000219: 22,3410 43345 TICKTPER DLOAD DAD # (-TPER NON ZERO) TFF WAS NOT COMPUTED,
030825,000220: 22,3411 02143 -TPER # BUT WAS SET TO 59M59S. DONT TICK TFF, DO
030826,000221: 22,3412 02205 TSTART82 # TICK -TPER. DISPLAY BOTH.
030827,000222: 22,3413 02143 STORE -TPER # -TPER CORRECTED FOR TIME SINCE V82GOFF1
030828,000223: 22,3414 77776 EXIT # BEGAN.
030829,000224: 22,3415 34753 CAF BIT1
030830,000225: 22,3416 55537 TS V82FLAGS # INFORMS TICKTEST TO INCREMENT ONLY -TPER
030831,000226: 22,3417 05155 TC ENDOFJOB
030832,000227:
030833,000228: 22,3420 43345 TICKTIFF DLOAD DAD # (-TPER=0) TFF WAS COMPUTED. TICK TFF.
030834,000229: 22,3421 02141 TFF # DO NOT TICK -TPER. DISPLAY TFF, BUT NOT
030835,000230: 22,3422 02205 TSTART82 # -TPER.
030836,000231: 22,3423 02141 STORE TFF # TFF CORRECTED FOR TIME SINCE V82GOFF1
030837,000232: 22,3424 77776 EXIT # BEGAN.
030838,000233: 22,3425 34752 CAF BIT2
030839,000234: 22,3426 55537 TS V82FLAGS # INFORMS TICKTEST TO INCREMENT ONLY TFF.
030840,000235: 22,3427 05155 TC ENDOFJOB
030841,000236:
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Page 716 |
030843,000238: 22,3430 34747 TICKTEST CAF BIT5 # THIS WAITLIST PROGRAM PERPETUATES ITSELF
030844,000239: 22,3431 71044 MASK EXTVBACT # ONCE A SEC UNTIL BIT 5 OF EXTVBACT =0.
030845,000240: 22,3432 10000 CCS A
030846,000241: 22,3433 03441 TC DOTICK
030847,000242: 22,3434 37713 CAF PRIO25
030848,000243: 22,3435 05072 TC NOVAC # TERMINATE V 82. CANT CALL ENDEXT IN RUPT.
030849,000244: 22,3436 1044 EBANK= EXTVBACT
030850,000245: 22,3436 05472 04062 2CADR ENDEXT
030851,000246:
030852,000247: 22,3440 05261 TC TASKOVER
030853,000248: 22,3441 34777 DOTICK CAF 1SEC # RE-REQUEST TICKTEST.
030854,000249: 22,3442 05203 TC WAITLIST
030855,000250: 22,3443 E4,1540 EBANK= TFF
030856,000251: 22,3443 03430 44064 2CADR TICKTEST
030857,000252:
030858,000253: 22,3445 36245 CAF THREE
030859,000254: 22,3446 71537 MASK V82FLAGS
030860,000255: 22,3447 50000 INDEX A
030861,000256: 22,3450 03451 TC +1
030862,000257: 22,3451 05261 TC TASKOVER # IF NO FLAGBITS SET DONT CHANGE TFF OR
030863,000258: # -TPER, BUT CONTINUE LOOP.
030864,000259: 22,3452 03460 TC TPERTICK # ONLY BIT 1 SET. INCR -TPER BY 1 SEC.
030865,000260: 22,3453 34777 TFFTICK CAF 1SEC # ONLY BIT 2 SET. INCR TFF BY 1 SEC.
030866,000261: 22,3454 54001 TS L
030867,000262: 22,3455 34755 CAF ZERO
030868,000263: 22,3456 21541 DAS TFF
030869,000264: 22,3457 05261 TC TASKOVER
030870,000265: 22,3460 34777 TPERTICK CAF 1SEC
030871,000266: 22,3461 54001 TS L
030872,000267: 22,3462 34755 CAF ZERO
030873,000268: 22,3463 21543 DAS -TPER
030874,000269: 22,3464 05261 TC TASKOVER
030875,000270:
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Page 717 |
030877,000272: 22,3465 77776 V82GON EXIT # AVERAGE G ON. USE CURRENT STATE VECTOR
030878,000273: # FOR ORBITAL PARAMETER CALCULATIONS.
030879,000274: 22,3466 35021 CAF PRIO7 # LESS THAN LAMBERT
030880,000275: 22,3467 05105 TC FINDVAC # V82GON1 WILL PERFORM ORBIT CALCULATIONS
030881,000276: 22,3470 E4,1540 EBANK= TFF # ABOUT PROPER BODY APPROX ONCE PER SEC.
030882,000277: 22,3470 03503 44064 2CADR V82GON1
030883,000278:
030884,000279: 22,3472 00003 RELINT
030885,000280: 22,3473 10067 CCS NEWJOB # WITHOLD V16 N44 UNTIL FIRST ORBIT CALC
030886,000281: 22,3474 05122 TC CHANG1 # IS DONE. NOTE: V82GON1 (PRIO7, FINDVAC
030887,000282: # JOB) IS COMPLETED BEFORE V82GON (PRIO7,
030888,000283: # NOVAC JOB).
030889,000284: 22,3475 33317 V82REDSP CAF V16N44 # MONITOR HAPO, HPER, TFF
030890,000285: 22,3476 04616 TC BANKCALL
030891,000286: 22,3477 20334 CADR GOXDSPF
030892,000287: 22,3500 05563 TC B5OFF # TERM THIS TELLS V82GON1 TO KILL ITSELF.
030893,000288: 22,3501 05563 TC B5OFF # PROC DITTO.
030894,000289: 22,3502 03475 TC V82REDSP # RECYCLE
030895,000290:
030896,000291: 22,3503 06037 V82GON1 TC INTPRET # THIS EXEC PROGRAM PERPETUATES ITSELF
030897,000292: # ONCE A SEC UNTIL BIT 5 OF EXTVBACT =0.
030898,000293: 22,3504 52175 VLOAD GOTO # HOLDS OFF CCS NEWJOB BETWEEN RN AND
030899,000294: 22,3505 01221 RN # VN FETCH SO RN, VN ARE FROM SAME
030900,000295: 22,3506 45507 NEXTLINE # STATE VECTOR UPDATE.
030901,000296: 22,3507 26207 NEXTLINE STOVL RONE # RN AT (-29)M FOR EARTH OR MOON
030902,000297: 22,3510 01227 VN
030903,000298: 22,3511 02215 STORE VONE # VN AT (-7)M/CS FOR EARTH OR MOON
030904,000299: 22,3512 52014 BON GOTO
030905,000300: 22,3513 04304 MOONTHIS # FLAG INDICATES BODY ABOUT WHICH ORBITAL
030906,000301: 22,3514 45516 MOONGON # CALCULATIONS ARE TO BE PERFORMED.
030907,000302: 22,3515 45527 EARTHGON # IF SET - MOON, IF RESET - EARTH.
030908,000303:
030909,000304: 22,3516 71214 MOONGON SET DLOAD
030910,000305: 22,3517 03475 V82EMFLG # INDICATE MOON SCALING FOR SR30.1
030911,000306: 22,3520 04001 1/RTMUM # LUNAR PARAMETERS LOADED HERE FOR SR30.1
030912,000307: 22,3521 14037 STODL TFF/RTMU
030913,000308: 22,3522 05364 MINPERM
030914,000309: 22,3523 26201 STOVL HPERMIN
030915,000310: 22,3524 02023 RLS # SCALED AT (-27)M.
030916,000311: 22,3525 52046 ABVAL GOTO
030917,000312: 22,3526 45536 V82GON2
030918,000313: 22,3527 71214 EARTHGON CLEAR DLOAD
030919,000314: 22,3530 03675 V82EMFLG # INDICATE EARTH SCALING FOR SR30.1
030920,000315: 22,3531 04003 1/RTMUE # EARTH PARAMETERS LOADED HERE FOR SR30.1
030921,000316: 22,3532 14037 STODL TFF/RTMU
030922,000317: 22,3533 05366 MINPERE
030923,000318: 22,3534 16201 STODL HPERMIN
030924,000319: 22,3535 06315 RPAD
030925,000320: 22,3536 36203 V82GON2 STCALL RPADTEM # COMMON CODE FOR EARTH & MOON.
030926,000321: 22,3537 45551 SR30.1
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Page 718 |
030928,000323: 22,3540 77776 EXIT
030929,000324: 22,3541 34747 V82GON3 CAF BIT5
030930,000325: 22,3542 71044 MASK EXTVBACT # SEE IF ASTRONAUT HAS SIGNALLED TERMINATE
030931,000326: 22,3543 00006 EXTEND
030932,000327: 22,3544 15472 BZF ENDEXT # YES, TERMINATE VB 82 LOOP
030933,000328: 22,3545 34777 CAF 1SEC
030934,000329: 22,3546 04616 TC BANKCALL # WAIT ONE SECOND BEFORE REPEATING
030935,000330: 22,3547 01735 CADR DELAYJOB # ORBITAL PARAMETER COMPUTATION.
030936,000331: 22,3550 03503 TC V82GON1
030937,000332:
030938,000333: 22,3551 22,3541 SPLRET = V82GON3
030939,000334:
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Page 719 |
030941,000336: # SUBROUTINE NAME: SR30.1
030942,000337: # MOD NO: 0 DATE: 16 FEB 67
030943,000338: # MOD BY: RR BAIRNSFATHER LOG SECTION: R32
030944,000339: # MOD NO: 1 MOD BY: RR BAIRNSFATHER DATE: 11 APR 67 SR30.1 CHANGED TO ALLOW MONITOR OPERN
030945,000340: # MOD NO: 2 MOD BY: RR BAIRNSFATHER DATE: 14 APR 67 ADD OVFL CK FOR RAPO
030946,000341: # MOD NO: 3 MOD BY ALONSO DATE: 11 DEC 67 SUBROUTINE REWRITTEN
030947,000342: # MOD NO: 4 MOD BY ALONSO DATE: 26 MAR 68 PROG MOD TO HANDLE DIF EARTH/MOON SCALE
030948,000343: # MOD NO: 5 MOD BY: RR BAIRNSFATHER DATE: 6 AUG 68 OVFL CK FOR HAPO & HPER. VOIDS MOD #2.
030949,000344:
030950,000345: # NEW FUNCTIONAL DESCRIPTION: ORBITAL PARAMETERS DISPLAY FOR NOUNS 32 AND 44.
030951,000346: # SR30.1 CALLS TFFCONMU AND TFFRP/RA TO CALCULATE RPER (PERIGEE RADIUS),
030952,000347: # RAPO (APOGEE RADIUS), HPER (PERIGEE HEIGHT ABOVE LAUNCH PAD OR LUNAR
030953,000348: # LANDING SITE), HAPO (APOGEE HEIGHT AS ABOVE), TPER (TIME TO PERIGEE),
030954,000349: # TFF (TIME TO INTERSECT 300 KFT ABOVE PAD OR 35KFT ABOVE LANDING SITE).
030955,000350: # IF HPER IS GREATER THAN OR EQUAL TO HPERMIN, CALCULATES TPER AND STORES
030956,000351: # NEGATIVE IN -TPER. OTHERWISE STORES +0 IN -TPER. WHENEVER TPER IS
030957,000352: # CALCULATED, TFF IS NOT COMPUTABLE AND DEFAULTS TO -59MIN 59SEC. IF HAPO
030958,000353: # WOULD EXCEED 9999.9 NM, IT IS LIMITED TO THAT VALUE FOR DISPLAY.
030959,000354:
030960,000355: # ADDENDUM: HAPO AND HPER SHOULD BE CHANGED TO READ HAPOX AND HPERX IN THE
030961,000356: # ABOVE REMARKS.
030962,000357:
030963,000358: # CALLING SEQUENCE: CALL
030964,000359: # SR30.1
030965,000360:
030966,000361: # SUBROUTINES CALLED: TFFCONMU, TFFRP/RA, CALCTPER, CALCTFF
030967,000362:
030968,000363: # NORMAL EXIT MODE: CALLING LINE +1 (STILL IN INTERPRETIVE MODE)
030969,000364:
030970,000365: # ALARMS: NONE
030971,000366:
030972,000367: # OUTPUT: RAPO (-29) M EARTH APOGEE RADIUS EARTH CENTERED COORD.
030973,000368: # (-27) M MOON MOON CENTERED COORD.
030974,000369: # RPER (-29) M EARTH PERIGEE RADIUS EARTH CENTERED COORD.
030975,000370: # (-27) M MOON MOON CENTERED COORD.
030976,000371: # HAPOX (-29) M APOGEE ALTITUDE ABOVE PAD OR LAND. SITE MAX VALUE LIMITED TO 9999.9 NM.
030977,000372: # HPERX (-29) M PERIGEE ALT. ABOVE PAD OR LAND. SITE MAX VALUE LIMITED TO 9999.9 NM.
030978,000373: # TFF (-28) CS TIME TO 300KFT OR 35KFT ALTITUDE
030979,000374: # -TPER (-28) CS TIME TO PERIGEE
030980,000375:
030981,000376: # ERASABLE INITIALIZATION REQUIRED -
030982,000377: # TFF/RTMU (+17) EARTH RECIPROCAL OF PROPER GRAV CONSTANT FOR
030983,000378: # (+14) MOON EARTH OR MOON = 1/SQRT(MU).
030984,000379: # RONE (-29) M STATE VECTOR
030985,000380: # VONE (-7) M/CS STATE VECTOR
030986,000381: # RPADTEM (-29) M EARTH RADIUS OF LAUNCH PAD OR LUNAR LANDING
030987,000382: # (-27) M MOON SITE.
030988,000383: # HPERMIN (-29) M EARTH (300 OR 35) KFT MINIMUM PERIGEE ALTITUDE
030989,000384: # (-27) M MOON ABOVE LAUNCH PAD OR LUNAR LANDING SITE.
030990,000385: # V82EMFLG (INT SW BIT) RESET FOR EARTH, SET FOR MOON.
030991,000386:
030992,000387: # DEBRIS: QPRET, PDL, S2
030993,000388:
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Page 720 |
030995,000390: 22,3551 COUNT* $$/SR30S
030996,000391:
030997,000392: 22,3551 44001 SR30.1 SETPD STQ # INITIALIZE PUSHDOWN LIST.
030998,000393: 22,3552 00001 0
030999,000394: 22,3553 00051 S2
031000,000395: # SR30.1 INPUT: RONE AT (-29)M EARTH/MOON
031001,000396: # VONE AT (-7)M/CS
031002,000397: # TFFCONMU, TFFRP/RA, CALCTPER AND CALCTFF
031003,000398: # CALLS REQUIRE:
031004,000399: # EARTH CENTERED (NO RESCALING REQUIRED)
031005,000400: # RONE SCALED TO B-29 M
031006,000401: # VONE SCALED TO B-7 M/CS
031007,000402: # MOON CENTERED (RESCALING REQUIRED)
031008,000403: # RONE SCALED TO B-27 M
031009,000404: # VONE SCALED TO B-5 M/CS
031010,000405: 22,3554 77214 BOFF VLOAD
031011,000406: 22,3555 03755 V82EMFLG # OFF FOR EARTH, ON FOR MOON.
031012,000407: 22,3556 45565 TFFCALLS
031013,000408: 22,3557 02207 RONE
031014,000409: 22,3560 77752 VSL2
031015,000410: 22,3561 26207 STOVL RONE
031016,000411: 22,3562 02215 VONE
031017,000412: 22,3563 77752 VSL2
031018,000413: 22,3564 02215 STORE VONE
031019,000414: 22,3565 77624 TFFCALLS CALL
031020,000415: 22,3566 57361 TFFCONMU
031021,000416: 22,3567 77624 CALL # TFFRP/RA COMPUTES RAPO,RPER.
031022,000417: 22,3570 57427 TFFRP/RA
031023,000418: # RETURNS WITH RAPO IN D(MPAC).
031024,000419: 22,3571 77625 DSU
031025,000420: 22,3572 02203 RPADTEM
031026,000421: 22,3573 64414 BOFF SR2R # NEED HAPO AT (-29)M FOR DISPLAY.
031027,000422: # IF MOON CENTERED, RESCALE FROM (-27)M.
031028,000423: # IF EARTH CENTERED ALREADY AT (-29)M.
031029,000424: 22,3574 03755 V82EMFLG # OFF FOR EARTH, ON FOR MOON.
031030,000425: 22,3575 45576 +1
031031,000426: 22,3576 77624 CALL # IF HAPO > MAXNM, SET HAPO =9999.9 NM.
031032,000427: 22,3577 45636 MAXCHK # OTHERWISE STORE (RAPO-RPADTEM) IN HAPO.
031033,000428: 22,3600 16120 STORHAPO STODL HAPOX
031034,000429: 22,3601 00017 RPER
031035,000430: 22,3602 77625 DSU
031036,000431: 22,3603 02203 RPADTEM # GIVES HPER AT (-29)M EARTH, (-27)M MOON.
031037,000432: 22,3604 00161 STORE MPAC +4 # SAVE THIS FOR COMPARISON TO HPERMIN.
031038,000433: 22,3605 64414 BOFF SR2R # NEED HPER AT (-29)M FOR DISPLAY.
031039,000434: # IF MOON CENTERED, RESCALE FROM (-27)M.
031040,000435: # IF EARTH CENTERED ALREADY AT (-29)M.
031041,000436: 22,3606 03755 V82EMFLG # OFF FOR EARTH, ON FOR MOON.
031042,000437: 22,3607 45610 +1
031043,000438: 22,3610 77624 CALL # IF HPER > MAXNM, SET HPER = 9999.9 NM.
031044,000439: 22,3611 45636 MAXCHK
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031046,000441: 22,3612 16122 STORHPER STODL HPERX # STORE (RPER - RPADTEM) INTO HPERX.
031047,000442: 22,3613 00161 MPAC +4
031048,000443: 22,3614 51025 DSU BPL # HPERMIN AT (-29)M FOR EARTH, (-27)M MOON
031049,000444: 22,3615 02201 HPERMIN # IF HPER L/ HPERMIN (300 OR 35) KFT,
031050,000445: 22,3616 45622 DOTPER # THEN ZERO INTO -TPER.
031051,000446: 22,3617 52145 DLOAD GOTO # OTHERWISE CALCULATE TPER.
031052,000447: 22,3620 06522 HI6ZEROS
031053,000448: 22,3621 45626 SKIPTPER
031054,000449: 22,3622 45145 DOTPER DLOAD CALL
031055,000450: 22,3623 00017 RPER
031056,000451: 22,3624 57465 CALCTPER
031057,000452: 22,3625 77676 DCOMP # TPER IS PUT NEG INTO -TPER.
031058,000453: 22,3626 16143 SKIPTPER STODL -TPER
031059,000454: 22,3627 02201 HPERMIN # HPERMIN AT (-29)M FOR EARTH, (-27)M MOON
031060,000455: 22,3630 45015 DAD CALL
031061,000456: 22,3631 02203 RPADTEM # RPADTEM AT (-29)M FOR EARTH, (-27)M MOON
031062,000457: 22,3632 57470 CALCTFF # GIVES 59M59S FOR TFF IF RPER G/
031063,000458: 22,3633 77676 DCOMP # HPERMIN + RPADTEM. (TPER WAS NON ZERO)
031064,000459: 22,3634 36141 STCALL TFF # OTHERWISE COMPUTES TFF. (GOTO)
031065,000460: 22,3635 00051 S2
031066,000461:
031067,000462: 22,3636 51025 MAXCHK DSU BPL # IF C(MPAC) > 9999.9 NM, MPAC = 9999.9 NM
031068,000463: 22,3637 05646 MAXNM
031069,000464: 22,3640 45643 +3 # OTHERWISE C(MPAC) = B(MPAC).
031070,000465: 22,3641 43415 DAD RVQ
031071,000466: 22,3642 05646 MAXNM
031072,000467: 22,3643 43545 +3 DLOAD RVQ # (USED BY P30 - P37 ALSO)
031073,000468: 22,3644 05646 MAXNM
031074,000469:
031075,000470: 22,3645 01065 05603 MAXNM 2OCT 0106505603
031076,000471:
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Page 722 Empty page. |
031079,000474:
End of include-file R30.agc. Parent file is MAIN.agc