GAP: ASSEMBLE REVISION 001 OF AGC PROGRAM LMY99 BY NASA 2021112-061 16:27 JULY 14,1969Note that the date is the date of the printout, not the date of the program revision.
Source Code
|
|
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 16:27 JULY 14,1969Note that the date is the date of the printout, not the date of the program revision. |
030619,000002: ## Copyright: Public domain.
030620,000003: ## Filename: R30.agc
030621,000004: ## Purpose: Part of the source code for Luminary 1A build 099.
030622,000005: ## It is part of the source code for the Lunar Module's (LM)
030623,000006: ## Apollo Guidance Computer (AGC), for Apollo 11.
030624,000007: ## Assembler: yaYUL
030625,000008: ## Contact: Ron Burkey <info@sandroid.org>.
030626,000009: ## Website: www.ibiblio.org/apollo.
030627,000010: ## Pages: 712-722
030628,000011: ## Mod history: 2009-05-19 RSB Adapted from the corresponding
030629,000012: ## Luminary131 file, using page
030630,000013: ## images from Luminary 1A.
030631,000014: ## 2009-06-07 RSB Removed a space between two components of
030632,000015: ## a 2OCT that isn't legal in yaYUL.
030633,000016: ## 2016-12-14 RSB Proofed text comments with octopus/ProoferComments
030634,000017: ## and corrected the errors found.
030635,000018: ## 2017-02-08 RSB Comment-text fixes discovered while proofing Artemis 72.
030636,000019: ## 2017-03-16 RSB Comment-text fixes identified in 5-way
030637,000020: ## side-by-side diff of Luminary 69/99/116/131/210.
030638,000021: ## 2017-03-17 RSB Comment-text fixes identified in diff'ing
030639,000022: ## Luminary 99 vs Comanche 55.
030640,000023: ## 2021-05-30 ABS TICKTIFF -> TICKTFF
030641,000024:
030642,000025: ## This source code has been transcribed or otherwise adapted from
030643,000026: ## digitized images of a hardcopy from the MIT Museum. The digitization
030644,000027: ## was performed by Paul Fjeld, and arranged for by Deborah Douglas of
030645,000028: ## the Museum. Many thanks to both. The images (with suitable reduction
030646,000029: ## in storage size and consequent reduction in image quality as well) are
030647,000030: ## available online at www.ibiblio.org/apollo. If for some reason you
030648,000031: ## find that the images are illegible, contact me at info@sandroid.org
030649,000032: ## about getting access to the (much) higher-quality images which Paul
030650,000033: ## actually created.
030651,000034: ##
030652,000035: ## Notations on the hardcopy document read, in part:
030653,000036: ##
030654,000037: ## Assemble revision 001 of AGC program LMY99 by NASA 2021112-61
030655,000038: ## 16:27 JULY 14, 1969
030656,000039:
|
|
Page 712 |
030658,000041: # SUBROUTINE NAME: V82CALL
030659,000042: # MOD NO: 0 DATE: 16 FEB 67
030660,000043: # MOD BY: RR BAIRNSFATHER LOG SECTION: R30
030661,000044: # MOD NO: 1 MOD BY: RR BAIRNSFATHER DATE: 11 APR 67 SR30.1 CHANGED TO ALLOW MONITOR OPERN
030662,000045: # MOD NO: 2 MOD BY ALONSO DATE: 11 DEC 67 VB82 PROGRAM REWRITTEN
030663,000046: # MOD NO: 3 MOD BY ALONSO DATE: 26 MAR 68 PROG MOD TO HANDLE DIF EARTH/MOON SCALE
030664,000047:
030665,000048: # NEW FUNCTIONAL DESCRIPTION: CALLED BY VERB 82 ENTER. PRIORITY 10
030666,000049: # USED THROUGHOUT. CALCULATE AND DISPLAY ORBITAL PARAMETERS
030667,000050:
030668,000051: # 1. IF AVERAGE G IS OFF:
030669,000052: # FLASH DISPLAY V04N06. R2 INDICATES WHICH SHIP'S STATE VECTOR IS
030670,000053: # TO BE UPDATED. INITIAL CHOICE IS THIS SHIP (R2=1). ASTRONAUT
030671,000054: # CAN CHANGE TO OTHER SHIP BY V22EXE, WHERE X NOT EQ 1.
030672,000055: # SELECTED STATE VECTOR UPDATED BY THISPREC (OTHPREC).
030673,000056: # CALLS SR30.1 (WHICH CALLS TFFCONMU + TFFRP/RA) TO CALCULATE
030674,000057: # RPER (PERIGEE RADIUS), RAPO (APOGEE RADIUS), HPER (PERIGEE
030675,000058: # HEIGHT ABOVE LAUNCH PAD OR LUNAR LANDING SITE), HAPO (APOGEE
030676,000059: # HEIGHT AS ABOVE), TPER (TIME TO PERIGEE), TFF (TIME TO
030677,000060: # INTERSECT 300 KFT ABOVE PAD OR 35KFT ABOVE LANDING SITE).
030678,000061: # FLASH MONITOR V16N44 (HAPO, HPER, TFF). TFF IS -59M59S IF IT WAS
030679,000062: # NOT COMPUTABLE, OTHERWISE IT INCREMENTS ONCE PER SECOND.
030680,000063: # ASTRONAUT HAS OPTION TO MONITOR TPER BY KEYING IN N 32 E.
030681,000064: # DISPLAY IS IN HMS, IS NEGATIVE (AS WAS TFF), AND INCREMENTS
030682,000065: # ONCE PER SECOND ONLY IF TFF DISPLAY WAS -59M59S.
030683,000066: # 2. IF AVERAGE G IS ON:
030684,000067: # CALLS SR30.1 APPROX EVERY TWO SECS. STATE VECTOR IS ALWAYS
030685,000068: # FOR THIS VEHICLE. V82 DOES NOT DISTURB STATE VECTOR. RESULTS
030686,000069: # OF SR30.1 ARE RAPO, RPER, HAPO, HPER, TPER, TFF.
030687,000070: # FLASH MONITOR V16N44 (HAPO, HPER, TFF).
030688,000071: # ADDENDUM: HAPO AND HPER SHOULD BE CHANGED TO READ HAPOX AND HPERX IN THE
030689,000072: # ABOVE REMARKS.
030690,000073:
030691,000074: # CALLING SEQUENCE: VERB 82 ENTER.
030692,000075:
030693,000076: # SUBROUTINES CALLED: SR30.1, GOXDSPF
030694,000077: # MAYBE - THISPREC, OTHPREC, LOADTIME, DELRSPL
030695,000078:
030696,000079: # NORMAL EXIT MODES: TC ENDEXT
030697,000080:
030698,000081: # ALARMS: NONE
030699,000082:
030700,000083: # OUTPUT: HAPOX (-29) M
030701,000084: # HPERX (-29) M
030702,000085: # RAPO (-29) M EARTH
030703,000086: # (-27) M MOON
030704,000087: # RPER (-29) M EARTH
030705,000088: # (-27) M MOON
030706,000089: # TFF (-28) CS CONTAINS NEGATIVE QUANTITY
030707,000090: # -TPER (-28) CS CONTAINS NEGATIVE QUANTITY
030708,000091:
|
|
Page 713 |
030710,000093: # ERASABLE INITIALIZATION REQUIRED: STATE VECTOR.
030711,000094:
030712,000095: # DEBRIS: QPRET, RONE, VONE, TFF/RTMU, HPERMIN, RPADTEM, V82EMFLG.
030713,000096: # MAYBE: TSTART82, V82FLAGS, TDEC1.
030714,000097:
030715,000098: 13,2351 E4,1517 EBANK= HAPOX
030716,000099: 31,2144 BANK 31
030717,000100: 22,2000 SETLOC R30LOC
030718,000101: 22,2000 BANK
030719,000102: 22,3242 COUNT* $$/R30
030720,000103:
030721,000104: 22,3242 06037 V82CALL TC INTPRET
030722,000105: 22,3243 52014 BON GOTO
030723,000106: 22,3244 03712 AVEGFLAG
030724,000107: 22,3245 45465 V82GON # IF AVERAGE G ON
030725,000108: 22,3246 45247 V82GOFF # IF AVERAGE G OFF
030726,000109:
030727,000110: 22,3247 77776 V82GOFF EXIT # ALLOW ASTRONAUT TO SELECT VEHICLE
030728,000111: 22,3250 34752 CAF TWO # DESIRED FOR ORBITAL PARAMETERS
030729,000112: 22,3251 55051 TS OPTIONX # CALCULATION AND DISPLAY.
030730,000113: 22,3252 34753 CAF ONE
030731,000114: 22,3253 55052 TS OPTIONX +1
030732,000115: 22,3254 33316 CAF OPTIONVN # V 04 N 06
030733,000116: 22,3255 04616 TC BANKCALL
030734,000117: 22,3256 20334 CADR GOXDSPF
030735,000118: 22,3257 05472 TC ENDEXT # TERMINATE
030736,000119: 22,3260 03262 TC +2 # PROCEED
030737,000120: 22,3261 03254 TC -5 # DATA IN. OPTION1+1 = 1 FOR THIS VEHICLE.
030738,000121: # UNEQ 1 FOR OTHER VEHICLE.
030739,000122: 22,3262 34750 CAF BIT4 # 80 MS
030740,000123: 22,3263 05203 TC WAITLIST
030741,000124: 22,3264 E4,1540 EBANK= TFF
030742,000125: 22,3264 03430 44064 2CADR TICKTEST
030743,000126:
030744,000127: 22,3266 00003 RELINT
030745,000128: 22,3267 33320 V82GOFLP CAF TFFBANK # MAJOR RECYCLE LOOP ENTRY
030746,000129: 22,3270 54003 TS EBANK
030747,000130: 22,3271 34755 CAF ZERO
030748,000131: 22,3272 55537 TS V82FLAGS # ZERO FLAGS FOR TICKTEST. INHIBITS
030749,000132: # DECREMENTING OF TFF AND -TPER.
030750,000133: 22,3273 35021 CAF PRIO7
030751,000134: 22,3274 05105 TC FINDVAC # V82GOFF1 WILL EXECUTE STATE VECTOR
030752,000135: 22,3275 E4,1540 EBANK= TFF # UPDATE AND ORBIT CALCULATIONS FOR
030753,000136: 22,3275 03321 44064 2CADR V82GOFF1 # SELECTED VEHICLE ABOUT PROPER BODY.
030754,000137:
030755,000138: 22,3277 00003 RELINT
030756,000139: 22,3300 36245 V82STALL CAF THREE # STALL IN THIS LOOP AND WITHOLD V 16 N 44
|
|
Page 714 |
030758,000141: 22,3301 71537 MASK V82FLAGS # UNTIL STATE VECTOR UPDATE SETS ONE OF
030759,000142: 22,3302 10000 CCS A # OUR FLAG BITS.
030760,000143: 22,3303 03310 TC FLAGGON # EXIT FROM STALL LOOP.
030761,000144: 22,3304 34777 CAF 1SEC
030762,000145: 22,3305 04616 TC BANKCALL
030763,000146: 22,3306 01735 CADR DELAYJOB
030764,000147: 22,3307 03300 TC V82STALL
030765,000148:
030766,000149: 22,3310 33317 FLAGGON CAF V16N44 # MONITOR HAPO,HPER,TFF.
030767,000150: 22,3311 04616 TC BANKCALL
030768,000151: 22,3312 20334 CADR GOXDSPF
030769,000152: 22,3313 05563 TC B5OFF # TERM THIS TELLS TICKTEST TO KILL ITSELF
030770,000153: 22,3314 05563 TC B5OFF # PROCEED DITTO
030771,000154: 22,3315 03267 TC V82GOFLP # RECYCLE RECOMPUTE STATE VECT + DISPLAY
030772,000155:
030773,000156: 22,3316 01014 OPTIONVN VN 412
030774,000157: 22,3317 04054 V16N44 VN 1644
030775,000158: 22,3320 02140 TFFBANK ECADR TFF
030776,000159:
030777,000160: 22,3321 06037 V82GOFF1 TC INTPRET
030778,000161: 22,3322 77634 RTB
030779,000162: 22,3323 21573 LOADTIME
030780,000163: 22,3324 00041 STORE TDEC1 # TIME FOR STATE VECTOR UPDATE.
030781,000164: 22,3325 02205 STORE TSTART82 # TIME FOR INTERNAL USE.
030782,000165: 22,3326 77776 EXIT
030783,000166: 22,3327 41052 CS OPTIONX +1 # 1 FOR THIS VEHICLE, NOT 1 FOR OTHER.
030784,000167: 22,3330 64753 AD ONE
030785,000168: 22,3331 00006 EXTEND
030786,000169: 22,3332 13356 BZF THISSHIP
030787,000170: 22,3333 06037 OTHSHIP TC INTPRET
030788,000171: 22,3334 77624 CALL # CALL STATE VECTOR UPDATE FOR OTHER SHIP.
030789,000172: 22,3335 27043 OTHPREC
030790,000173: 22,3336 77775 BOTHSHIP VLOAD # MOVE RESULTS INTO TFFCONIC STORAGE AREAS
030791,000174: 22,3337 00001 RATT # TO BE CALLED BY SR30.1.
030792,000175: 22,3340 26207 STOVL RONE # RATT AT (-29)M FOR EARTH OR MOON
030793,000176: 22,3341 00007 VATT
030794,000177: 22,3342 02215 STORE VONE # VATT AT (-7)M/CS FOR EARTH OR MOON
030795,000178: 22,3343 77743 DLOAD*
030796,000179: 22,3344 73774 1/RTMUE,2 # X2 IS 0 FOR EARTH CENTERED STATE VEC
030797,000180: 22,3345 00037 STORE TFF/RTMU # X2 IS 2 FOR MOON
030798,000181: 22,3346 77743 DLOAD* # AS LEFT BY THISPREC OR OTHPREC.
030799,000182: 22,3347 72411 MINPERE,2
030800,000183: 22,3350 02201 STORE HPERMIN # TFFRTMU, HPERMIN AND RPADTEM ARE ALL
030801,000184: 22,3351 46135 SLOAD BHIZ # EARTH/MOON PARAMETERS AS SET HERE.
030802,000185: 22,3352 00050 X2
030803,000186: 22,3353 45367 EARTHPAD
030804,000187: 22,3354 77650 GOTO
030805,000188: 22,3355 45373 MOONPAD
|
|
Page 715 |
030807,000190: 22,3356 06037 THISSHIP TC INTPRET
030808,000191: 22,3357 77624 CALL # CALL STATE VECTOR UPDATE FOR THIS SHIP.
030809,000192: 22,3360 27057 THISPREC
030810,000193: 22,3361 77650 GOTO
030811,000194: 22,3362 45336 BOTHSHIP
030812,000195:
030813,000196: # THE FOLLOWING CONSTANTS ARE PAIRWISE INDEXED. DO NOT SEPARATE PAIRS.
030814,000197:
030815,000198: 22,3363 00001 11530 MINPERM 2DEC 10668 B-27 # 35 KFT MIN PERIGEE HEIGHT FOR MOON(-27)M
030816,000199:
030817,000200: 22,3365 00002 31230 MINPERE 2DEC 91440 B-29 # 300 KFT (-29)M FOR EARTH
030818,000201:
030819,000202: 22,3367 43145 EARTHPAD DLOAD CLRGO # PAD 37-B RADIUS. SCALED AT (-29)M.
030820,000203: 22,3370 06315 RPAD
030821,000204: 22,3371 03635 V82EMFLG # INDICATE EARTH SCALING FOR SR30.1
030822,000205: 22,3372 45377 BOTHPAD
030823,000206:
030824,000207: 22,3373 51575 MOONPAD VLOAD ABVAL # COMPUTE MOON PAD RADIUS FROM RLS VECTOR.
030825,000208: 22,3374 02023 RLS # SCALED AT (-27)M.
030826,000209: 22,3375 77614 SET
030827,000210: 22,3376 03475 V82EMFLG # INDICATE MOON SCALING FOR SR30.1
030828,000211: 22,3377 36203 BOTHPAD STCALL RPADTEM
030829,000212: 22,3400 45551 SR30.1 # CALCULATE ORBITAL PARAMETERS
030830,000213: 22,3401 45234 RTB DSU
030831,000214: 22,3402 21573 LOADTIME
030832,000215: 22,3403 02205 TSTART82 # PRESENT TIME - TIME V82GOFF1 BEGAN
030833,000216: 22,3404 02205 STORE TSTART82 # SAVE IT
030834,000217: 22,3405 53145 DLOAD BZE # SR30.1 SETS -TPER=0 IF HPER L/
030835,000218: 22,3406 02143 -TPER # HPERMIN (300 OR 35) KFT.
030836,000219: 22,3407 45420 TICKTFF # (-TPER = 0)
030837,000220: 22,3410 43345 TICKTPER DLOAD DAD # (-TPER NON ZERO) TFF WAS NOT COMPUTED,
030838,000221: 22,3411 02143 -TPER # BUT WAS SET TO 59M59S. DONT TICK TFF, DO
030839,000222: 22,3412 02205 TSTART82 # TICK -TPER. DISPLAY BOTH.
030840,000223: 22,3413 02143 STORE -TPER # -TPER CORRECTED FOR TIME SINCE V82GOFF1
030841,000224: 22,3414 77776 EXIT # BEGAN.
030842,000225: 22,3415 34753 CAF BIT1
030843,000226: 22,3416 55537 TS V82FLAGS # INFORMS TICKTEST TO INCREMENT ONLY -TPER
030844,000227: 22,3417 05155 TC ENDOFJOB
030845,000228:
030846,000229: 22,3420 43345 TICKTFF DLOAD DAD # (-TPER=0) TFF WAS COMPUTED. TICK TFF.
030847,000230: 22,3421 02141 TFF # DO NOT TICK -TPER. DISPLAY TFF, BUT NOT
030848,000231: 22,3422 02205 TSTART82 # -TPER.
030849,000232: 22,3423 02141 STORE TFF # TFF CORRECTED FOR TIME SINCE V82GOFF1
030850,000233: 22,3424 77776 EXIT # BEGAN.
030851,000234: 22,3425 34752 CAF BIT2
030852,000235: 22,3426 55537 TS V82FLAGS # INFORMS TICKTEST TO INCREMENT ONLY TFF.
030853,000236: 22,3427 05155 TC ENDOFJOB
030854,000237:
|
|
Page 716 |
030856,000239: 22,3430 34747 TICKTEST CAF BIT5 # THIS WAITLIST PROGRAM PERPETUATES ITSELF
030857,000240: 22,3431 71044 MASK EXTVBACT # ONCE A SEC UNTIL BIT 5 OF EXTVBACT =0.
030858,000241: 22,3432 10000 CCS A
030859,000242: 22,3433 03441 TC DOTICK
030860,000243: 22,3434 37713 CAF PRIO25
030861,000244: 22,3435 05072 TC NOVAC # TERMINATE V 82. CANT CALL ENDEXT IN RUPT.
030862,000245: 22,3436 1044 EBANK= EXTVBACT
030863,000246: 22,3436 05472 04062 2CADR ENDEXT
030864,000247:
030865,000248: 22,3440 05261 TC TASKOVER
030866,000249: 22,3441 34777 DOTICK CAF 1SEC # RE-REQUEST TICKTEST.
030867,000250: 22,3442 05203 TC WAITLIST
030868,000251: 22,3443 E4,1540 EBANK= TFF
030869,000252: 22,3443 03430 44064 2CADR TICKTEST
030870,000253:
030871,000254: 22,3445 36245 CAF THREE
030872,000255: 22,3446 71537 MASK V82FLAGS
030873,000256: 22,3447 50000 INDEX A
030874,000257: 22,3450 03451 TC +1
030875,000258: 22,3451 05261 TC TASKOVER # IF NO FLAGBITS SET DONT CHANGE TFF OR
030876,000259: # -TPER, BUT CONTINUE LOOP.
030877,000260: 22,3452 03460 TC TPERTICK # ONLY BIT 1 SET. INCR -TPER BY 1 SEC.
030878,000261: 22,3453 34777 TFFTICK CAF 1SEC # ONLY BIT 2 SET. INCR TFF BY 1 SEC.
030879,000262: 22,3454 54001 TS L
030880,000263: 22,3455 34755 CAF ZERO
030881,000264: 22,3456 21541 DAS TFF
030882,000265: 22,3457 05261 TC TASKOVER
030883,000266: 22,3460 34777 TPERTICK CAF 1SEC
030884,000267: 22,3461 54001 TS L
030885,000268: 22,3462 34755 CAF ZERO
030886,000269: 22,3463 21543 DAS -TPER
030887,000270: 22,3464 05261 TC TASKOVER
030888,000271:
|
|
Page 717 |
030890,000273: 22,3465 77776 V82GON EXIT # AVERAGE G ON. USE CURRENT STATE VECTOR
030891,000274: # FOR ORBITAL PARAMETER CALCULATIONS.
030892,000275: 22,3466 35021 CAF PRIO7 # LESS THAN LAMBERT
030893,000276: 22,3467 05105 TC FINDVAC # V82GON1 WILL PERFORM ORBIT CALCULATIONS
030894,000277: 22,3470 E4,1540 EBANK= TFF # ABOUT PROPER BODY APPROX ONCE PER SEC.
030895,000278: 22,3470 03503 44064 2CADR V82GON1
030896,000279:
030897,000280: 22,3472 00003 RELINT
030898,000281: 22,3473 10067 CCS NEWJOB # WITHOLD V16 N44 UNTIL FIRST ORBIT CALC
030899,000282: 22,3474 05122 TC CHANG1 # IS DONE. NOTE: V82GON1 (PRIO7, FINDVAC
030900,000283: # JOB) IS COMPLETED BEFORE V82GON (PRIO7,
030901,000284: # NOVAC JOB).
030902,000285: 22,3475 33317 V82REDSP CAF V16N44 # MONITOR HAPO, HPER, TFF
030903,000286: 22,3476 04616 TC BANKCALL
030904,000287: 22,3477 20334 CADR GOXDSPF
030905,000288: 22,3500 05563 TC B5OFF # TERM THIS TELLS V82GON1 TO KILL ITSELF.
030906,000289: 22,3501 05563 TC B5OFF # PROC DITTO.
030907,000290: 22,3502 03475 TC V82REDSP # RECYCLE
030908,000291:
030909,000292: 22,3503 06037 V82GON1 TC INTPRET # THIS EXEC PROGRAM PERPETUATES ITSELF
030910,000293: # ONCE A SEC UNTIL BIT 5 OF EXTVBACT =0.
030911,000294: 22,3504 52175 VLOAD GOTO # HOLDS OFF CCS NEWJOB BETWEEN RN AND
030912,000295: 22,3505 01221 RN # VN FETCH SO RN, VN ARE FROM SAME
030913,000296: 22,3506 45507 NEXTLINE # STATE VECTOR UPDATE.
030914,000297: 22,3507 26207 NEXTLINE STOVL RONE # RN AT (-29)M FOR EARTH OR MOON
030915,000298: 22,3510 01227 VN
030916,000299: 22,3511 02215 STORE VONE # VN AT (-7)M/CS FOR EARTH OR MOON
030917,000300: 22,3512 52014 BON GOTO
030918,000301: 22,3513 04304 MOONTHIS # FLAG INDICATES BODY ABOUT WHICH ORBITAL
030919,000302: 22,3514 45516 MOONGON # CALCULATIONS ARE TO BE PERFORMED.
030920,000303: 22,3515 45527 EARTHGON # IF SET - MOON, IF RESET - EARTH.
030921,000304:
030922,000305: 22,3516 71214 MOONGON SET DLOAD
030923,000306: 22,3517 03475 V82EMFLG # INDICATE MOON SCALING FOR SR30.1
030924,000307: 22,3520 04001 1/RTMUM # LUNAR PARAMETERS LOADED HERE FOR SR30.1
030925,000308: 22,3521 14037 STODL TFF/RTMU
030926,000309: 22,3522 05364 MINPERM
030927,000310: 22,3523 26201 STOVL HPERMIN
030928,000311: 22,3524 02023 RLS # SCALED AT (-27)M.
030929,000312: 22,3525 52046 ABVAL GOTO
030930,000313: 22,3526 45536 V82GON2
030931,000314: 22,3527 71214 EARTHGON CLEAR DLOAD
030932,000315: 22,3530 03675 V82EMFLG # INDICATE EARTH SCALING FOR SR30.1
030933,000316: 22,3531 04003 1/RTMUE # EARTH PARAMETERS LOADED HERE FOR SR30.1
030934,000317: 22,3532 14037 STODL TFF/RTMU
030935,000318: 22,3533 05366 MINPERE
030936,000319: 22,3534 16201 STODL HPERMIN
030937,000320: 22,3535 06315 RPAD
030938,000321: 22,3536 36203 V82GON2 STCALL RPADTEM # COMMON CODE FOR EARTH & MOON.
030939,000322: 22,3537 45551 SR30.1
|
|
Page 718 |
030941,000324: 22,3540 77776 EXIT
030942,000325: 22,3541 34747 V82GON3 CAF BIT5
030943,000326: 22,3542 71044 MASK EXTVBACT # SEE IF ASTRONAUT HAS SIGNALLED TERMINATE
030944,000327: 22,3543 00006 EXTEND
030945,000328: 22,3544 15472 BZF ENDEXT # YES, TERMINATE VB 82 LOOP
030946,000329: 22,3545 34777 CAF 1SEC
030947,000330: 22,3546 04616 TC BANKCALL # WAIT ONE SECOND BEFORE REPEATING
030948,000331: 22,3547 01735 CADR DELAYJOB # ORBITAL PARAMETER COMPUTATION.
030949,000332: 22,3550 03503 TC V82GON1
030950,000333:
030951,000334: 22,3551 22,3541 SPLRET = V82GON3
030952,000335:
|
|
Page 719 |
030954,000337: # SUBROUTINE NAME: SR30.1
030955,000338: # MOD NO: 0 DATE: 16 FEB 67
030956,000339: # MOD BY: RR BAIRNSFATHER LOG SECTION: R32
030957,000340: # MOD NO: 1 MOD BY: RR BAIRNSFATHER DATE: 11 APR 67 SR30.1 CHANGED TO ALLOW MONITOR OPERN
030958,000341: # MOD NO: 2 MOD BY: RR BAIRNSFATHER DATE: 14 APR 67 ADD OVFL CK FOR RAPO
030959,000342: # MOD NO: 3 MOD BY ALONSO DATE: 11 DEC 67 SUBROUTINE REWRITTEN
030960,000343: # MOD NO: 4 MOD BY ALONSO DATE: 26 MAR 68 PROG MOD TO HANDLE DIF EARTH/MOON SCALE
030961,000344: # MOD NO: 5 MOD BY: RR BAIRNSFATHER DATE: 6 AUG 68 OVFL CK FOR HAPO & HPER. VOIDS MOD #2.
030962,000345:
030963,000346: # NEW FUNCTIONAL DESCRIPTION: ORBITAL PARAMETERS DISPLAY FOR NOUNS 32 AND 44.
030964,000347: # SR30.1 CALLS TFFCONMU AND TFFRP/RA TO CALCULATE RPER (PERIGEE RADIUS),
030965,000348: # RAPO (APOGEE RADIUS), HPER (PERIGEE HEIGHT ABOVE LAUNCH PAD OR LUNAR
030966,000349: # LANDING SITE), HAPO (APOGEE HEIGHT AS ABOVE), TPER (TIME TO PERIGEE),
030967,000350: # TFF (TIME TO INTERSECT 300 KFT ABOVE PAD OR 35KFT ABOVE LANDING SITE).
030968,000351: # IF HPER IS GREATER THAN OR EQUAL TO HPERMIN, CALCULATES TPER AND STORES
030969,000352: # NEGATIVE IN -TPER. OTHERWISE STORES +0 IN -TPER. WHENEVER TPER IS
030970,000353: # CALCULATED, TFF IS NOT COMPUTABLE AND DEFAULTS TO -59MIN 59SEC. IF HAPO
030971,000354: # WOULD EXCEED 9999.9 NM, IT IS LIMITED TO THAT VALUE FOR DISPLAY.
030972,000355:
030973,000356: # ADDENDUM: HAPO AND HPER SHOULD BE CHANGED TO READ HAPOX AND HPERX IN THE
030974,000357: # ABOVE REMARKS.
030975,000358:
030976,000359: # CALLING SEQUENCE: CALL
030977,000360: # SR30.1
030978,000361:
030979,000362: # SUBROUTINES CALLED: TFFCONMU, TFFRP/RA, CALCTPER, CALCTFF
030980,000363:
030981,000364: # NORMAL EXIT MODE: CALLING LINE +1 (STILL IN INTERPRETIVE MODE)
030982,000365:
030983,000366: # ALARMS: NONE
030984,000367:
030985,000368: # OUTPUT: RAPO (-29) M EARTH APOGEE RADIUS EARTH CENTERED COORD.
030986,000369: # (-27) M MOON MOON CENTERED COORD.
030987,000370: # RPER (-29) M EARTH PERIGEE RADIUS EARTH CENTERED COORD.
030988,000371: # (-27) M MOON MOON CENTERED COORD.
030989,000372: # HAPOX (-29) M APOGEE ALTITUDE ABOVE PAD OR LAND. SITE MAX VALUE LIMITED TO 9999.9 NM.
030990,000373: # HPERX (-29) M PERIGEE ALT. ABOVE PAD OR LAND. SITE MAX VALUE LIMITED TO 9999.9 NM.
030991,000374: # TFF (-28) CS TIME TO 300KFT OR 35KFT ALTITUDE
030992,000375: # -TPER (-28) CS TIME TO PERIGEE
030993,000376:
030994,000377: # ERASABLE INITIALIZATION REQUIRED -
030995,000378: # TFF/RTMU (+17) EARTH RECIPROCAL OF PROPER GRAV CONSTANT FOR
030996,000379: # (+14) MOON EARTH OR MOON = 1/SQRT(MU).
030997,000380: # RONE (-29) M STATE VECTOR
030998,000381: # VONE (-7) M/CS STATE VECTOR
030999,000382: # RPADTEM (-29) M EARTH RADIUS OF LAUNCH PAD OR LUNAR LANDING
031000,000383: # (-27) M MOON SITE.
031001,000384: # HPERMIN (-29) M EARTH (300 OR 35) KFT MINIMUM PERIGEE ALTITUDE
031002,000385: # (-27) M MOON ABOVE LAUNCH PAD OR LUNAR LANDING SITE.
031003,000386: # V82EMFLG (INT SW BIT) RESET FOR EARTH, SET FOR MOON.
031004,000387:
031005,000388: # DEBRIS: QPRET, PDL, S2
031006,000389:
|
|
Page 720 |
031008,000391: 22,3551 COUNT* $$/SR30S
031009,000392:
031010,000393: 22,3551 44001 SR30.1 SETPD STQ # INITIALIZE PUSHDOWN LIST.
031011,000394: 22,3552 00001 0
031012,000395: 22,3553 00051 S2
031013,000396: # SR30.1 INPUT: RONE AT (-29)M EARTH/MOON
031014,000397: # VONE AT (-7)M/CS
031015,000398: # TFFCONMU, TFFRP/RA, CALCTPER AND CALCTFF
031016,000399: # CALLS REQUIRE:
031017,000400: # EARTH CENTERED (NO RESCALING REQUIRED)
031018,000401: # RONE SCALED TO B-29 M
031019,000402: # VONE SCALED TO B-7 M/CS
031020,000403: # MOON CENTERED (RESCALING REQUIRED)
031021,000404: # RONE SCALED TO B-27 M
031022,000405: # VONE SCALED TO B-5 M/CS
031023,000406: 22,3554 77214 BOFF VLOAD
031024,000407: 22,3555 03755 V82EMFLG # OFF FOR EARTH, ON FOR MOON.
031025,000408: 22,3556 45565 TFFCALLS
031026,000409: 22,3557 02207 RONE
031027,000410: 22,3560 77752 VSL2
031028,000411: 22,3561 26207 STOVL RONE
031029,000412: 22,3562 02215 VONE
031030,000413: 22,3563 77752 VSL2
031031,000414: 22,3564 02215 STORE VONE
031032,000415: 22,3565 77624 TFFCALLS CALL
031033,000416: 22,3566 57361 TFFCONMU
031034,000417: 22,3567 77624 CALL # TFFRP/RA COMPUTES RAPO,RPER.
031035,000418: 22,3570 57427 TFFRP/RA
031036,000419: # RETURNS WITH RAPO IN D(MPAC).
031037,000420: 22,3571 77625 DSU
031038,000421: 22,3572 02203 RPADTEM
031039,000422: 22,3573 64414 BOFF SR2R # NEED HAPO AT (-29)M FOR DISPLAY.
031040,000423: # IF MOON CENTERED, RESCALE FROM (-27)M.
031041,000424: # IF EARTH CENTERED ALREADY AT (-29)M.
031042,000425: 22,3574 03755 V82EMFLG # OFF FOR EARTH, ON FOR MOON.
031043,000426: 22,3575 45576 +1
031044,000427: 22,3576 77624 CALL # IF HAPO > MAXNM, SET HAPO =9999.9 NM.
031045,000428: 22,3577 45636 MAXCHK # OTHERWISE STORE (RAPO-RPADTEM) IN HAPO.
031046,000429: 22,3600 16120 STORHAPO STODL HAPOX
031047,000430: 22,3601 00017 RPER
031048,000431: 22,3602 77625 DSU
031049,000432: 22,3603 02203 RPADTEM # GIVES HPER AT (-29)M EARTH, (-27)M MOON.
031050,000433: 22,3604 00161 STORE MPAC +4 # SAVE THIS FOR COMPARISON TO HPERMIN.
031051,000434: 22,3605 64414 BOFF SR2R # NEED HPER AT (-29)M FOR DISPLAY.
031052,000435: # IF MOON CENTERED, RESCALE FROM (-27)M.
031053,000436: # IF EARTH CENTERED ALREADY AT (-29)M.
031054,000437: 22,3606 03755 V82EMFLG # OFF FOR EARTH, ON FOR MOON.
031055,000438: 22,3607 45610 +1
031056,000439: 22,3610 77624 CALL # IF HPER > MAXNM, SET HPER = 9999.9 NM.
031057,000440: 22,3611 45636 MAXCHK
|
|
Page 721 |
031059,000442: 22,3612 16122 STORHPER STODL HPERX # STORE (RPER - RPADTEM) INTO HPERX.
031060,000443: 22,3613 00161 MPAC +4
031061,000444: 22,3614 51025 DSU BPL # HPERMIN AT (-29)M FOR EARTH, (-27)M MOON
031062,000445: 22,3615 02201 HPERMIN # IF HPER L/ HPERMIN (300 OR 35) KFT,
031063,000446: 22,3616 45622 DOTPER # THEN ZERO INTO -TPER.
031064,000447: 22,3617 52145 DLOAD GOTO # OTHERWISE CALCULATE TPER.
031065,000448: 22,3620 06522 HI6ZEROS
031066,000449: 22,3621 45626 SKIPTPER
031067,000450: 22,3622 45145 DOTPER DLOAD CALL
031068,000451: 22,3623 00017 RPER
031069,000452: 22,3624 57465 CALCTPER
031070,000453: 22,3625 77676 DCOMP # TPER IS PUT NEG INTO -TPER.
031071,000454: 22,3626 16143 SKIPTPER STODL -TPER
031072,000455: 22,3627 02201 HPERMIN # HPERMIN AT (-29)M FOR EARTH, (-27)M MOON
031073,000456: 22,3630 45015 DAD CALL
031074,000457: 22,3631 02203 RPADTEM # RPADTEM AT (-29)M FOR EARTH, (-27)M MOON
031075,000458: 22,3632 57470 CALCTFF # GIVES 59M59S FOR TFF IF RPER G/
031076,000459: 22,3633 77676 DCOMP # HPERMIN + RPADTEM. (TPER WAS NON ZERO)
031077,000460: 22,3634 36141 STCALL TFF # OTHERWISE COMPUTES TFF. (GOTO)
031078,000461: 22,3635 00051 S2
031079,000462:
031080,000463: 22,3636 51025 MAXCHK DSU BPL # IF C(MPAC) > 9999.9 NM, MPAC = 9999.9 NM
031081,000464: 22,3637 05646 MAXNM
031082,000465: 22,3640 45643 +3 # OTHERWISE C(MPAC) = B(MPAC).
031083,000466: 22,3641 43415 DAD RVQ
031084,000467: 22,3642 05646 MAXNM
031085,000468: 22,3643 43545 +3 DLOAD RVQ # (USED BY P30 - P37 ALSO)
031086,000469: 22,3644 05646 MAXNM
031087,000470:
031088,000471: 22,3645 01065 05603 MAXNM 2OCT 0106505603
031089,000472:
|
|
Page 722 Empty page. |
031092,000475:
End of include-file R30.agc. Parent file is MAIN.agc