Source Code

These source-code files were transcribed from a printout in Don Eyles's personal collection, scanned by archive.org, and financially sponsored by Linden Sims. A team of volunteers performed the transcription and proof-reading. The scanned page images are available at the Virtual AGC Project website, as well as higher-quality (but much larger) images at the Virtual AGC Project's collection in the Internet Archive. Report any problems by creating "issues" at the Virtual AGC Project's GitHub Repository.

Notations on the program listing read, in part:

	GAP:  ASSEMBLE REVISION 56 OF AGC PROGRAM ZERLINA BY ZOROASTER
	9:12 OCT. 21,1970
Note that the date is the date of the printout, not the date of the program revision.

031104,000002:                                                                                                  ## Copyright:   Public domain.
031105,000003:                                                                                                  ## Filename:    R30.agc
031106,000004:                                                                                                  ## Purpose:     A log section of Zerlina 56, the final revision of
031107,000005:                                                                                                  ##              Don Eyles's offline development program for the variable 
031108,000006:                                                                                                  ##              guidance period servicer. It also includes a new P66 with LPD 
031109,000007:                                                                                                  ##              (Landing Point Designator) capability, based on an idea of John 
031110,000008:                                                                                                  ##              Young's. Neither of these advanced features were actually flown,
031111,000009:                                                                                                  ##              but Zerlina was also the birthplace of other big improvements to
031112,000010:                                                                                                  ##              Luminary including the terrain model and new (Luminary 1E)
031113,000011:                                                                                                  ##              analog display programs. Zerlina was branched off of Luminary 145,
031114,000012:                                                                                                  ##              and revision 56 includes all changes up to and including Luminary
031115,000013:                                                                                                  ##              183. It is therefore quite close to the Apollo 14 program,
031116,000014:                                                                                                  ##              Luminary 178, where not modified with new features.
031117,000015:                                                                                                  ## Reference:   pp. 706-716
031118,000016:                                                                                                  ## Assembler:   yaYUL
031119,000017:                                                                                                  ## Contact:     Ron Burkey <info@sandroid.org>.
031120,000018:                                                                                                  ## Website:     www.ibiblio.org/apollo/index.html
031121,000019:                                                                                                  ## Mod history: 2017-07-28 MAS  Created from Luminary 210.
031122,000020:                                                                                                  ##              2017-08-27 MAS  Updated for Zerlina 56.
031123,000021: 

Page 706

031125,000023:                                                                                                  #  SUBROUTINE NAME:     V82CALL
031126,000024:                                                                                                  #  MOD NO:  0                                                              DATE:           16 FEB 67
031127,000025:                                                                                                  #  MOD BY:  RR BAIRNSFATHER                                                LOG SECTION:    R30
031128,000026:                                                                                                  #  MOD NO: 1            MOD BY: RR BAIRNSFATHER       DATE: 11 APR 67      SR30.1 CHANGED TO ALLOW MONITOR OPERN
031129,000027:                                                                                                  #  MOD  NO: 2           MOD  BY ALONSO                DATE : 11 DEC 67     VB82 PROGRAM REWRITTEN
031130,000028:                                                                                                  #  MOD NO: 3            MOD  BY ALONSO                DATE: 26 MAR 68      PROG MOD TO HANDLE DIF EARTH/MOON SCALE
031131,000029:                                                                                                  #   NEW FUNCTIONAL DESCRIPTION:    CALLED BY VERB 82 ENTER.  PRIORITY 10
031132,000030:                                                                                                  #    USED THROUGHOUT.              CALCULATE AND DISPLAY ORBITAL PARAMETERS
031133,000031: 
031134,000032:                                                                                                  #  1. IF AVERAGE G IS OFF:
031135,000033:                                                                                                  #           FLASH DISPLAY V04N06. R2 INDICATES WHICH SHIP'S STATE VECTOR IS
031136,000034:                                                                                                  #            TO BE UPDATED. INITIAL CHOICE IS THIS SHIP (R2=1). ASTRONAUT
031137,000035:                                                                                                  #            CAN CHANGE TO OTHER SHIP BY V22EXE, WHERE X NOT EQ 1.
031138,000036:                                                                                                  #           SELECTED STATE VECTOR UPDATED BY THISPREC (OTHPREC).
031139,000037:                                                                                                  #           CALLS SR30.1 (WHICH CALLS TFFCONMU + TFFRP/RA) TO CALCULATE
031140,000038:                                                                                                  #            RPER (PERIGEE RADIUS), RAPO (APOGEE RADIUS), HPER (PERIGEE
031141,000039:                                                                                                  #            HEIGHT ABOVE LAUNCH PAD OR LUNAR LANDING SITE), HAPO (APOGEE
031142,000040:                                                                                                  #            HEIGHT AS ABOVE), TPER (TIME TO PERIGEE), TFF (TIME TO
031143,000041:                                                                                                  #            INTERSECT 300 KFT ABOVE PAD OR 35KFT ABOVE LANDING SITE).
031144,000042:                                                                                                  #           FLASH MONITOR V16N44 (HAPO, HPER, TFF).TFF IS -59M59S IF IT WAS
031145,000043:                                                                                                  #            NOT COMPUTABLE, OTHERWISE IT INCREMENTS ONCE PER SECOND.
031146,000044:                                                                                                  #            ASTRONAUT HAS OPTION TO MONITOR TPER BY KEYING IN N 32 E.
031147,000045:                                                                                                  #            DISPLAY IS IN HMS, IS NEGATIVE (AS WAS TFF), AND INCREMENTS
031148,000046:                                                                                                  #            ONCE PER SECOND ONLY IF TFF DISPLAY WAS -59M59S.
031149,000047: 
031150,000048:                                                                                                  #  2. IF AVERAGE G IS ON:
031151,000049:                                                                                                  #           CALLS SR30.1 APPROX EVERY TWO SECS.  STATE VECTOR IS ALWAYS
031152,000050:                                                                                                  #            FOR THIS VEHICLE. V82 DOES NOT DISTURB STATE VECTOR.  RESULTS
031153,000051:                                                                                                  #            OF SR30.1 ARE RAPO, RPER, HAPO, HPER, TPER, TFF.
031154,000052:                                                                                                  #           FLASH MONITOR V16N44 (HAPO, HPER, TFF).
031155,000053:                                                                                                  #  ADDENDUM: HAPO AND HPER SHOULD BE CHANGED TO READ HAPOX AND HPERX IN THE
031156,000054:                                                                                                  #            ABOVE REMARKS.
031157,000055: 
031158,000056:                                                                                                  #  CALLING SEQUENCE:  VERB 82 ENTER.
031159,000057: 
031160,000058: 
031161,000059:                                                                                                  #  SUBROUTINES CALLED:  SR30.1, GOXDSPF
031162,000060:                                                                                                  #                       MAYBE - THISPREC , OTHPREC, LOADTIME, DELRSPL
031163,000061:                                                                                                  #  NORMAL EXIT MODES:  TC ENDEXT
031164,000062: 
031165,000063:                                                                                                  #  ALARMS:  NONE
031166,000064: 
031167,000065:                                                                                                  #  OUTPUT:  HAPOX    (-29) M
031168,000066:                                                                                                  #           HPERX    (-29) M
031169,000067:                                                                                                  #           RAPO     (-29) M EARTH
031170,000068:                                                                                                  #                    (-27) M MOON
031171,000069:                                                                                                  #           RPER     (-29) M EARTH
031172,000070:                                                                                                  #                    (-27) M MOON
031173,000071:                                                                                                  #           TFF      (-28) CS      CONTAINS NEGATIVE QUANTITY
031174,000072:                                                                                                  #           -TPER    (-28) CS      CONTAINS NEGATIVE QUANTITY
031175,000073: 

Page 707

031177,000075: 
031178,000076:                                                                                                  #  ERASABLE INITIALIZATION REQUIRED: STATE VECTOR.
031179,000077: 
031180,000078:                                                                                                  #  DEBRIS:  QPRET, RONE, VONE,TFF/RTMU, HPERMIN, RPADTEM, V82EMFLG.
031181,000079:                                                                                                  #           MAYBE: TSTART82, V82FLAGS, TDEC1.
031182,000080: 
031183,000081: 
031184,000082: 13,2347  E4,1512                                  EBANK=   HAPOX                                 
031185,000083: 31,2144                                           BANK     31                                    
031186,000084: 22,2000                                           SETLOC   R30LOC                                
031187,000085: 22,2000                                           BANK                                           
031188,000086: 22,3242                                           COUNT*   $$/R30                                
031189,000087: 
031190,000088: 22,3242           06051        V82CALL            TC       INTPRET                               
031191,000089: 22,3243           52014                           BON      GOTO                                  
031192,000090: 22,3244           03712                                    AVEGFLAG                              
031193,000091: 22,3245           45465                                    V82GON                                #  IF AVERAGE G ON
031194,000092: 22,3246           45247                                    V82GOFF                               #  IF AVERAGE G OFF
031195,000093: 
031196,000094: 
031197,000095: 22,3247           77776        V82GOFF            EXIT                                           #  ALLOW ASTRONAUT TO SELECT VEHICLE
031198,000096: 22,3250           34752                           CAF      TWO                                   #  DESIRED FOR ORBITAL PARAMETERS
031199,000097: 22,3251           55050                           TS       OPTIONX                               #  CALCULATION AND DISPLAY.
031200,000098: 22,3252           34753                           CAF      ONE                                   
031201,000099: 22,3253           55051                           TS       OPTIONX    +1                         
031202,000100: 22,3254           33316                           CAF      OPTIONVN                              #  V 04 N 06
031203,000101: 22,3255           04616                           TC       BANKCALL                              
031204,000102: 22,3256           20334                           CADR     GOXDSPF                               
031205,000103: 22,3257           05503                           TC       ENDEXT                                #  TERMINATE
031206,000104: 22,3260           03262                           TC       +2                                    #  PROCEED
031207,000105: 22,3261           03254                           TC       -5                                    #  DATA IN. OPTION1+1 = 1 FOR THIS VEHICLE.
031208,000106:                                                                                                  #                 UNEQ 1 FOR OTHER VEHICLE.
031209,000107: 22,3262           34750                           CAF      BIT4                                  #  80 MS
031210,000108: 22,3263           05214                           TC       WAITLIST                              
031211,000109: 22,3264  E4,1531                                  EBANK=   TFF                                   
031212,000110: 22,3264           03430 44064                     2CADR    TICKTEST                              
031213,000111: 
031214,000112: 22,3266           00003                           RELINT                                         
031215,000113: 22,3267           33320        V82GOFLP           CAF      TFFBANK                               #  MAJOR RECYCLE LOOP ENTRY
031216,000114: 22,3270           54003                           TS       EBANK                                 
031217,000115: 22,3271           34755                           CAF      ZERO                                  
031218,000116: 22,3272           55530                           TS       V82FLAGS                              #  ZERO FLAGS FOR TICKTEST. INHIBITS
031219,000117:                                                                                                  #  DECREMENTING OF TFF AND -TPER.
031220,000118: 22,3273           35021                           CAF      PRIO7                                 
031221,000119: 22,3274           05105                           TC       FINDVAC                               #  V82GOFF1 WILL EXECUTE STATE VECTOR
031222,000120: 22,3275  E4,1531                                  EBANK=   TFF                                   #  UPDATE AND ORBIT CALCULATIONS FOR
031223,000121: 22,3275           03321 44064                     2CADR    V82GOFF1                              #  SELECTED VEHICLE ABOUT PROPER BODY.
031224,000122: 
031225,000123: 22,3277           00003                           RELINT                                         
031226,000124: 22,3300           36257        V82STALL           CAF      THREE                                 #  STALL IN THIS LOOP AND WITHOLD V 16 N 44

Page 708

031228,000126: 22,3301           71530                           MASK     V82FLAGS                              #  UNTIL STATE VECTOR UPDATE SETS ONE OF
031229,000127: 22,3302           10000                           CCS      A                                     #  OUR FLAG BITS.
031230,000128: 22,3303           03310                           TC       FLAGGON                               #  EXIT FROM STALL LOOP.
031231,000129: 22,3304           34777                           CAF      1SEC                                  
031232,000130: 22,3305           04616                           TC       BANKCALL                              
031233,000131: 22,3306           01736                           CADR     DELAYJOB                              
031234,000132: 22,3307           03300                           TC       V82STALL                              
031235,000133: 
031236,000134: 22,3310           33317        FLAGGON            CAF      V16N44                                #  MONITOR HAPO,HPER,TFF.
031237,000135: 22,3311           04616                           TC       BANKCALL                              
031238,000136: 22,3312           20334                           CADR     GOXDSPF                               
031239,000137: 22,3313           05574                           TC       B5OFF                                 #  TERM  THIS TELLS TICKTEST TO KILL ITSELF
031240,000138: 22,3314           05574                           TC       B5OFF                                 #  PROCEED  DITTO
031241,000139: 22,3315           03267                           TC       V82GOFLP                              #  RECYCLE  RECOMPUTE STATE VECT + DISPLAY
031242,000140: 
031243,000141: 22,3316           01014        OPTIONVN           VN       412                                   
031244,000142: 22,3317           04054        V16N44             VN       1644                                  
031245,000143: 22,3320           02131        TFFBANK            ECADR    TFF                                   
031246,000144: 
031247,000145: 
031248,000146: 22,3321           06051        V82GOFF1           TC       INTPRET                               
031249,000147: 22,3322           77634                           RTB                                            
031250,000148: 22,3323           21555                                    LOADTIME                              
031251,000149: 22,3324           00041                           STORE    TDEC1                                 #  TIME FOR STATE VECTOR UPDATE.
031252,000150: 22,3325           02176                           STORE    TSTART82                              #  TIME FOR INTERNAL USE.
031253,000151: 22,3326           77776                           EXIT                                           
031254,000152: 22,3327           41051                           CS       OPTIONX    +1                         #  1 FOR THIS VEHICLE, NOT 1 FOR OTHER.
031255,000153: 22,3330           64753                           AD       ONE                                   
031256,000154: 22,3331           00006                           EXTEND                                         
031257,000155: 22,3332           13356                           BZF      THISSHIP                              
031258,000156: 22,3333           06051        OTHSHIP            TC       INTPRET                               
031259,000157: 22,3334           77624                           CALL                                           #  CALL STATE VECTOR UPDATE FOR OTHER SHIP.
031260,000158: 22,3335           27042                                    OTHPREC                               
031261,000159: 22,3336           77775        BOTHSHIP           VLOAD                                          #  MOVE RESULTS INTO TFFCONIC STORAGE AREAS
031262,000160: 22,3337           00001                                    RATT                                  #   TO BE CALLED BY SR30.1.
031263,000161: 22,3340           26200                           STOVL    RONE                                  #  RATT AT (-29)M FOR EARTH OR MOON
031264,000162: 22,3341           00007                                    VATT                                  
031265,000163: 22,3342           02206                           STORE    VONE                                  #   VATT AT (-7)M/CS FOR EARTH OR MOON
031266,000164: 22,3343           77743                           DLOAD*                                         
031267,000165: 22,3344           73774                                    1/RTMUE,2                             #   X2 IS 0 FOR EARTH CENTERED STATE VEC
031268,000166: 22,3345           00037                           STORE    TFF/RTMU                              #   X2 IS 2 FOR MOON
031269,000167: 22,3346           77743                           DLOAD*                                         #  AS LEFT BY THISPREC OR OTHPREC.
031270,000168: 22,3347           72411                                    MINPERE,2                             
031271,000169: 22,3350           02172                           STORE    HPERMIN                               #    TFFRTMU, HPERMIN AND RPADTEM ARE ALL
031272,000170: 22,3351           46135                           SLOAD    BHIZ                                  #  EARTH/MOON PARAMETERS AS SET HERE.
031273,000171: 22,3352           00050                                    X2                                    
031274,000172: 22,3353           45367                                    EARTHPAD                              
031275,000173: 22,3354           77650                           GOTO                                           
031276,000174: 22,3355           45373                                    MOONPAD                               

Page 709

031278,000176: 22,3356           06051        THISSHIP           TC       INTPRET                               
031279,000177: 22,3357           77624                           CALL                                           #  CALL STATE VECTOR UPDATE FOR THIS SHIP.
031280,000178: 22,3360           27056                                    THISPREC                              
031281,000179: 22,3361           77650                           GOTO                                           
031282,000180: 22,3362           45336                                    BOTHSHIP                              
031283,000181: 
031284,000182:                                                                                                  #  THE FOLLOWING CONSTANTS ARE PAIRWISE INDEXED. DO NOT SEPARATE PAIRS.
031285,000183: 
031286,000184: 22,3363           00001 11530  MINPERM            2DEC     10668      B-27                       #  35 KFT MIN PERIGEE HEIGHT FOR MOON(-27)M
031287,000185: 
031288,000186: 22,3365           00002 31230  MINPERE            2DEC     91440      B-29                       #  300 KFT (-29)M FOR EARTH
031289,000187: 
031290,000188: 22,3367           43145        EARTHPAD           DLOAD    CLRGO                                 #   PAD 37-B RADIUS.  SCALED AT (-29)M.
031291,000189: 22,3370           06336                                    RPAD                                  
031292,000190: 22,3371           03635                                    V82EMFLG                              #   INDICATE EARTH SCALING FOR SR30.1
031293,000191: 22,3372           45377                                    BOTHPAD                               
031294,000192: 
031295,000193: 22,3373           51575        MOONPAD            VLOAD    ABVAL                                 #  COMPUTE MOON PAD RADIUS FROM RLS VECTOR.
031296,000194: 22,3374           02021                                    RLS                                   #   SCALED AT (-27)M.
031297,000195: 22,3375           77614                           SET                                            
031298,000196: 22,3376           03475                                    V82EMFLG                              #   INDICATE MOON SCALING FOR SR30.1
031299,000197: 22,3377           36174        BOTHPAD            STCALL   RPADTEM                               
031300,000198: 22,3400           45551                                    SR30.1                                #  CALCULATE ORBITAL PARAMETERS
031301,000199: 22,3401           45234                           RTB      DSU                                   
031302,000200: 22,3402           21555                                    LOADTIME                              
031303,000201: 22,3403           02176                                    TSTART82                              #  PRESENT TIME - TIME V82GOFF1 BEGAN
031304,000202: 22,3404           02176                           STORE    TSTART82                              #                 SAVE IT
031305,000203: 22,3405           53145                           DLOAD    BZE                                   #  SR30.1 SETS -TPER=0 IF HPER L/
031306,000204: 22,3406           02134                                    -TPER                                 #   HPERMIN (300 OR 35) KFT.
031307,000205: 22,3407           45420                                    TICKTIFF                              #  (-TPER = 0)
031308,000206: 22,3410           43345        TICKTPER           DLOAD    DAD                                   #  (-TPER NON ZERO)  TFF WAS NOT COMPUTED,
031309,000207: 22,3411           02134                                    -TPER                                 #  BUT WAS SET TO 59M59S.DONT TICK TFF, DO
031310,000208: 22,3412           02176                                    TSTART82                              #  TICK -TPER. DISPLAY BOTH.
031311,000209: 22,3413           02134                           STORE    -TPER                                 #  -TPER CORRECTED FOR TIME SINCE V82GOFF1
031312,000210: 22,3414           77776                           EXIT                                           #  BEGAN.
031313,000211: 22,3415           34753                           CAF      BIT1                                  
031314,000212: 22,3416           55530                           TS       V82FLAGS                              #  INFORMS TICKTEST TO INCREMENT ONLY -TPER
031315,000213: 22,3417           05155                           TC       ENDOFJOB                              
031316,000214: 
031317,000215: 22,3420           43345        TICKTIFF           DLOAD    DAD                                   #  (-TPER=0)  TFF WAS COMPUTED.TICK TFF.
031318,000216: 22,3421           02132                                    TFF                                   #  DO NOT TICK -TPER.DISPLAY TFF, BUT NOT
031319,000217: 22,3422           02176                                    TSTART82                              #  -TPER.
031320,000218: 22,3423           02132                           STORE    TFF                                   #  TFF CORRECTED FOR TIME SINCE V82GOFF1
031321,000219: 22,3424           77776                           EXIT                                           #  BEGAN.
031322,000220: 22,3425           34752                           CAF      BIT2                                  
031323,000221: 22,3426           55530                           TS       V82FLAGS                              #  INFORMS TICKTEST TO INCREMENT ONLY TFF.
031324,000222: 22,3427           05155                           TC       ENDOFJOB                              
031325,000223: 

Page 710

031327,000225: 22,3430           34747        TICKTEST           CAF      BIT5                                  #  THIS WAITLIST PROGRAM PERPETUATES ITSELF
031328,000226: 22,3431           71043                           MASK     EXTVBACT                              #  ONCE A SEC UNTIL BIT 5 OF EXTVBACT =0.
031329,000227: 22,3432           10000                           CCS      A                                     
031330,000228: 22,3433           03441                           TC       DOTICK                                
031331,000229: 22,3434           37725                           CAF      PRIO25                                
031332,000230: 22,3435           05072                           TC       NOVAC                                 #  TERMINATE V 82.CANT CALL ENDEXT IN RUPT.
031333,000231: 22,3436     1043                                  EBANK=   EXTVBACT                              
031334,000232: 22,3436           05503 04062                     2CADR    ENDEXT                                
031335,000233: 
031336,000234: 22,3440           05272                           TC       TASKOVER                              
031337,000235: 22,3441           34777        DOTICK             CAF      1SEC                                  #  RE-REQUEST TICKTEST.
031338,000236: 22,3442           05214                           TC       WAITLIST                              
031339,000237: 22,3443  E4,1531                                  EBANK=   TFF                                   
031340,000238: 22,3443           03430 44064                     2CADR    TICKTEST                              
031341,000239: 
031342,000240: 22,3445           36257                           CAF      THREE                                 
031343,000241: 22,3446           71530                           MASK     V82FLAGS                              
031344,000242: 22,3447           50000                           INDEX    A                                     
031345,000243: 22,3450           03451                           TC       +1                                    
031346,000244: 22,3451           05272                           TC       TASKOVER                              #  IF NO FLAGBITS SET DONT CHANGE TFF OR
031347,000245:                                                                                                  #  -TPER, BUT CONTINUE LOOP.
031348,000246: 22,3452           03460                           TC       TPERTICK                              #  ONLY BIT 1 SET. INCR -TPER BY 1 SEC.
031349,000247: 22,3453           34777        TFFTICK            CAF      1SEC                                  #  ONLY BIT 2 SET. INCR TFF BY 1 SEC.
031350,000248: 22,3454           54001                           TS       L                                     
031351,000249: 22,3455           34755                           CAF      ZERO                                  
031352,000250: 22,3456           21532                           DAS      TFF                                   
031353,000251: 22,3457           05272                           TC       TASKOVER                              
031354,000252: 22,3460           34777        TPERTICK           CAF      1SEC                                  
031355,000253: 22,3461           54001                           TS       L                                     
031356,000254: 22,3462           34755                           CAF      ZERO                                  
031357,000255: 22,3463           21534                           DAS      -TPER                                 
031358,000256: 22,3464           05272                           TC       TASKOVER                              
031359,000257: 

Page 711

031361,000259: 22,3465           77776        V82GON             EXIT                                           #   AVERAGE G ON. USE CURRENT STATE VECTOR
031362,000260:                                                                                                  #  FOR ORBITAL PARAMETER CALCULATIONS.
031363,000261: 22,3466           35021                           CAF      PRIO7                                 #  LESS THAN LAMBERT
031364,000262: 22,3467           05105                           TC       FINDVAC                               #  V82GON1 WILL PERFORM ORBIT CALCULATIONS
031365,000263: 22,3470  E4,1531                                  EBANK=   TFF                                   #  ABOUT PROPER BODY APPROX ONCE PER SEC.
031366,000264: 22,3470           03503 44064                     2CADR    V82GON1                               
031367,000265: 
031368,000266: 22,3472           00003                           RELINT                                         
031369,000267: 22,3473           10067                           CCS      NEWJOB                                #  WITHOLD V16 N44 UNTIL FIRST ORBIT CALC
031370,000268: 22,3474           05122                           TC       CHANG1                                #  IS DONE. NOTE: V82GON1 (PRIO7, FINDVAC
031371,000269:                                                                                                  #  JOB) IS COMPLETED BEFORE V82GON (PRIO7,
031372,000270:                                                                                                  #  NOVAC JOB).
031373,000271: 22,3475           33317        V82REDSP           CAF      V16N44                                #  MONITOR HAPO, HPER, TFF
031374,000272: 22,3476           04616                           TC       BANKCALL                              
031375,000273: 22,3477           20334                           CADR     GOXDSPF                               
031376,000274: 22,3500           05574                           TC       B5OFF                                 #  TERM THIS TELLS V82GON1 TO KILL ITSELF.
031377,000275: 22,3501           05574                           TC       B5OFF                                 #  PROC DITTO.
031378,000276: 22,3502           03475                           TC       V82REDSP                              #  RECYCLE
031379,000277: 
031380,000278: 22,3503           06051        V82GON1            TC       INTPRET                               #  THIS EXEC PROGRAM PERPETUATES ITSELF
031381,000279:                                                                                                  #  ONCE A SEC UNTIL BIT 5 OF EXTVBACT =0.
031382,000280: 22,3504           52175                           VLOAD    GOTO                                  #  HOLDS OFF CCS NEWJOB BETWEEN RN AND
031383,000281: 22,3505           01220                                    RN                                    #    VN FETCH SO RN , VN ARE FROM SAME
031384,000282: 22,3506           45507                                    NEXTLINE                              #    STATE VECTOR UPDATE.
031385,000283: 22,3507           26200        NEXTLINE           STOVL    RONE                                  #   RN AT (-29)M FOR EARTH OR MOON
031386,000284: 22,3510           01226                                    VN                                    
031387,000285: 22,3511           02206                           STORE    VONE                                  #  VN AT (-7)M/CS FOR EARTH OR MOON
031388,000286: 22,3512           52014                           BON      GOTO                                  
031389,000287: 22,3513           04304                                    MOONTHIS                              #  FLAG INDICATES BODY ABOUT WHICH ORBITAL
031390,000288: 22,3514           45516                                    MOONGON                               #     CALCULATIONS ARE TO BE PERFORMED.
031391,000289: 22,3515           45527                                    EARTHGON                              #    IF SET - MOON , IF RESET - EARTH.
031392,000290: 
031393,000291: 22,3516           71214        MOONGON            SET      DLOAD                                 
031394,000292: 22,3517           03475                                    V82EMFLG                              #  INDICATE MOON SCALING FOR SR30.1
031395,000293: 22,3520           04001                                    1/RTMUM                               #  LUNAR PARAMETERS LOADED HERE FOR SR30.1
031396,000294: 22,3521           14037                           STODL    TFF/RTMU                              
031397,000295: 22,3522           05364                                    MINPERM                               
031398,000296: 22,3523           26172                           STOVL    HPERMIN                               
031399,000297: 22,3524           02021                                    RLS                                   #   SCALED AT (-27)M.
031400,000298: 22,3525           52046                           ABVAL    GOTO                                  
031401,000299: 22,3526           45536                                    V82GON2                               
031402,000300: 22,3527           71214        EARTHGON           CLEAR    DLOAD                                 
031403,000301: 22,3530           03675                                    V82EMFLG                              #  INDICATE EARTH SCALING FOR SR30.1
031404,000302: 22,3531           04003                                    1/RTMUE                               #  EARTH PARAMETERS LOADED HERE FOR SR30.1
031405,000303: 22,3532           14037                           STODL    TFF/RTMU                              
031406,000304: 22,3533           05366                                    MINPERE                               
031407,000305: 22,3534           16172                           STODL    HPERMIN                               
031408,000306: 22,3535           06336                                    RPAD                                  
031409,000307: 22,3536           36174        V82GON2            STCALL   RPADTEM                               #  COMMON CODE FOR EARTH & MOON.
031410,000308: 22,3537           45551                                    SR30.1                                

Page 712

031412,000310: 22,3540           77776                           EXIT                                           
031413,000311: 22,3541           34747        V82GON3            CAF      BIT5                                  
031414,000312: 22,3542           71043                           MASK     EXTVBACT                              #  SEE IF ASTRONAUT HAS SIGNALLED TERMINATE
031415,000313: 22,3543           00006                           EXTEND                                         
031416,000314: 22,3544           15503                           BZF      ENDEXT                                #  YES, TERMINATE VB 82 LOOP
031417,000315: 22,3545           34777                           CAF      1SEC                                  
031418,000316: 22,3546           04616                           TC       BANKCALL                              #  WAIT ONE SECOND BEFORE REPEATING
031419,000317: 22,3547           01736                           CADR     DELAYJOB                              #    ORBITAL PARAMETER COMPUTATION.
031420,000318: 22,3550           03503                           TC       V82GON1                               
031421,000319: 
031422,000320: 22,3551  22,3541               SPLRET             =        V82GON3                               
031423,000321: 

Page 713

031425,000323:                                                                                                  #  SUBROUTINE NAME:     SR30.1
031426,000324:                                                                                                  #  MOD NO:  0                                                              DATE:           16 FEB 67
031427,000325:                                                                                                  #  MOD BY:  RR BAIRNSFATHER                                                LOG SECTION:    R32
031428,000326:                                                                                                  #  MOD NO:  1           MOD BY:  RR BAIRNSFATHER      DATE: 11 APR 67      SR30.1 CHANGED TO ALLOW MONITOR OPERN
031429,000327:                                                                                                  #  MOD NO:  2           MOD BY:  RR BAIRNSFATHER      DATE:  14 APR 67     ADD OVFL CK FOR RAPO
031430,000328:                                                                                                  #  MOD NO:  3           MOD BY ALONSO                 DATE: 11 DEC 67      SUBROUTINE REWRITTEN
031431,000329:                                                                                                  #  MOD NO: 4            MOD BY ALONSO                 DATE: 26 MAR 68      PROG MOD TO HANDLE DIF EARTH/MOON SCALE
031432,000330:                                                                                                  #  MOD NO:  5           MOD BY:  RR BAIRNSFATHER      DATE:  6 AUG 68      OVFL CK FOR HAPO & HPER.VOIDS MOD #2.
031433,000331: 
031434,000332:                                                                                                  #  NEW FUNCTIONAL DESCRIPTION:     ORBITAL PARAMETERS DISPLAY FOR NOUNS 32  AND 44.
031435,000333:                                                                                                  #  SR30.1 CALLS TFFCONMU AND TFFRP/RA TO CALCULATE RPER (PERIGEE RADIUS),
031436,000334:                                                                                                  #  RAPO (APOGEE RADIUS), HPER (PERIGEE HEIGHT ABOVE LAUNCH PAD OR LUNAR
031437,000335:                                                                                                  #  LANDING SITE), HAPO (APOGEE HEIGHT AS ABOVE), TPER (TIME TO PERIGEE),
031438,000336:                                                                                                  #  TFF (TIME TO INTERSECT 300 KFT ABOVE PAD OR 35KFT ABOVE LANDING SITE).
031439,000337:                                                                                                  #  IF HPER IS GREATER THAN OR EQUAL TO HPERMIN, CALCULATES TPER AND STORES
031440,000338:                                                                                                  #  NEGATIVE    IN -TPER. OTHERWISE STORES +0 IN -TPER. WHENEVER TPER IS
031441,000339:                                                                                                  #  CALCULATED, TFF IS NOT COMPUTABLE AND DEFAULTS TO -59MIN 59SEC. IF HAPO
031442,000340:                                                                                                  #  WOULD EXCEED 9999.9 NM, IT IS LIMITED TO THAT VALUE FOR DISPLAY.
031443,000341: 
031444,000342:                                                                                                  #  ADDENDUM: HAPO AND HPER SHOULD BE CHANGED TO READ HAPOX AND HPERX IN THE
031445,000343:                                                                                                  #            ABOVE REMARKS.
031446,000344: 
031447,000345:                                                                                                  #  CALLING SEQUENCE:         CALL
031448,000346:                                                                                                  #                                  SR30.1
031449,000347:                                                                                                  #  SUBROUTINES CALLED:       TFFCONMU, TFFRP/RA, CALCTPER, CALCTFF
031450,000348:                                                                                                  #  NORMAL EXIT MODE:         CALLING LINE +1 (STILL IN INTERPRETIVE MODE)
031451,000349:                                                                                                  #  ALARMS:                   NONE
031452,000350:                                                                                                  #  OUTPUT:  RAPO   (-29) M EARTH   APOGEE RADIUS   EARTH CENTERED COORD.
031453,000351:                                                                                                  #                  (-27) M MOON                    MOON CENTERED COORD.
031454,000352:                                                                                                  #           RPER   (-29) M EARTH   PERIGEE RADIUS  EARTH CENTERED COORD.
031455,000353:                                                                                                  #                  (-27) M MOON                    MOON  CENTERED COORD.
031456,000354:                                                                                                  #           HAPOX  (-29) M         APOGEE ALTITUDE ABOVE PAD OR LAND. SITE MAX VALUE LIMITED TO 9999.9 NM.
031457,000355:                                                                                                  #           HPERX  (-29) M         PERIGEE ALT. ABOVE PAD OR LAND. SITE    MAX VALUE LIMITED TO 9999.9 NM.
031458,000356:                                                                                                  #           TFF    (-28) CS        TIME TO 300KFT OR 35KFT ALTITUDE
031459,000357:                                                                                                  #           -TPER  (-28) CS        TIME TO PERIGEE
031460,000358:                                                                                                  #  ERASABLE INITIALIZATION REQUIRED-
031461,000359:                                                                                                  #           TFF/RTMU (+17) EARTH   RECIPROCAL OF PROPER GRAV CONSTANT FOR
031462,000360:                                                                                                  #                    (+14) MOON    EARTH OR MOON = 1/SQRT(MU).
031463,000361:                                                                                                  #           RONE    (-29) M        STATE VECTOR
031464,000362:                                                                                                  #           VONE    (-7)  M/CS     STATE VECTOR
031465,000363:                                                                                                  #           RPADTEM (-29) M EARTH  RADIUS OF LAUNCH PAD OR LUNAR LANDING
031466,000364:                                                                                                  #                   (-27) M MOON   SITE.
031467,000365:                                                                                                  #           HPERMIN (-29) M EARTH  (300 OR 35)KFT MINIMUM PERIGEE ALTITUDE
031468,000366:                                                                                                  #                   (-27) M MOON   ABOVE LAUNCH PAD OR LUNAR LANDING SITE.
031469,000367:                                                                                                  #           V82EMFLG (INT SW BIT) RESET FOR EARTH, SET FOR MOON.
031470,000368: 
031471,000369:                                                                                                  #  DEBRIS:       QPRET, PDL, S2
031472,000370: 

Page 714

031474,000372: 22,3551                                           COUNT*   $$/SR30S                              
031475,000373: 
031476,000374: 22,3551           44001        SR30.1             SETPD    STQ                                   #  INITIALIZE PUSHDOWN LIST.
031477,000375: 22,3552           00001                                    0                                     
031478,000376: 22,3553           00051                                    S2                                    
031479,000377:                                                                                                  #  SR30.1 INPUT: RONE AT (-29)M EARTH/MOON
031480,000378:                                                                                                  #                VONE AT (-7)M/CS
031481,000379:                                                                                                  #   TFFCONMU,TFFRP/RA,CALCTPER AND CALCTFF
031482,000380:                                                                                                  #   CALLS REQUIRE :
031483,000381:                                                                                                  #   EARTH CENTERED (NO RESCALING REQUIRED)
031484,000382:                                                                                                  #                 RONE SCALED TO B-29 M
031485,000383:                                                                                                  #                 VONE SCALED TO B-7 M/CS
031486,000384:                                                                                                  #   MOON CENTERED  (RESCALING REQUIRED)
031487,000385:                                                                                                  #                 RONE SCALED TO B-27 M
031488,000386:                                                                                                  #                 VONE SCALED TO B-5  M/CS
031489,000387: 22,3554           77214                           BOFF     VLOAD                                 
031490,000388: 22,3555           03755                                    V82EMFLG                              #    OFF FOR EARTH , ON FOR MOON.
031491,000389: 22,3556           45565                                    TFFCALLS                              
031492,000390: 22,3557           02200                                    RONE                                  
031493,000391: 22,3560           77752                           VSL2                                           
031494,000392: 22,3561           26200                           STOVL    RONE                                  
031495,000393: 22,3562           02206                                    VONE                                  
031496,000394: 22,3563           77752                           VSL2                                           
031497,000395: 22,3564           02206                           STORE    VONE                                  
031498,000396: 22,3565           77624        TFFCALLS           CALL                                           
031499,000397: 22,3566           57343                                    TFFCONMU                              
031500,000398: 22,3567           77624                           CALL                                           #  TFFRP/RA COMPUTES RAPO,RPER.
031501,000399: 22,3570           57411                                    TFFRP/RA                              
031502,000400:                                                                                                  #  RETURNS WITH RAPO IN D(MPAC).
031503,000401: 22,3571           77625                           DSU                                            
031504,000402: 22,3572           02174                                    RPADTEM                               
031505,000403: 22,3573           64414                           BOFF     SR2R                                  #  NEED HAPO AT (-29)M FOR DISPLAY.
031506,000404:                                                                                                  #  IF MOON CENTERED, RESCALE FROM (-27)M.
031507,000405:                                                                                                  #   IF EARTH CENTERED ALREADY AT (-29)M.
031508,000406: 22,3574           03755                                    V82EMFLG                              #   OFF FOR EARTH , ON FOR MOON.
031509,000407: 22,3575           45576                                    +1                                    
031510,000408: 22,3576           77624                           CALL                                           #  IF HAPO > MAXNM, SET HAPO =9999.9 NM.
031511,000409: 22,3577           45636                                    MAXCHK                                #  OTHERWISE STORE (RAPO-RPADTEM) IN HAPO.
031512,000410: 22,3600           16113        STORHAPO           STODL    HAPOX                                 
031513,000411: 22,3601           00017                                    RPER                                  
031514,000412: 22,3602           77625                           DSU                                            
031515,000413: 22,3603           02174                                    RPADTEM                               #  GIVES HPER AT (-29)M EARTH, (-27)M MOON.
031516,000414: 22,3604           00161                           STORE    MPAC       +4                         #  SAVE THIS FOR COMPARISON TO HPERMIN.
031517,000415: 22,3605           64414                           BOFF     SR2R                                  #  NEED HPER AT (-29)M FOR DISPLAY.
031518,000416:                                                                                                  #  IF MOON CENTERED, RESCALE FROM (-27)M.
031519,000417:                                                                                                  #  IF EARTH CENTERED ALREADY AT (-29)M.
031520,000418: 22,3606           03755                                    V82EMFLG                              #  OFF FOR EARTH,  ON FOR MOON.
031521,000419: 22,3607           45610                                    +1                                    
031522,000420: 22,3610           77624                           CALL                                           #  IF HPER > MAXNM, SET HPER = 9999.9 NM.
031523,000421: 22,3611           45636                                    MAXCHK                                

Page 715

031525,000423: 22,3612           16115        STORHPER           STODL    HPERX                                 #  STORE (RPER - RPADTEM) INTO HPERX.
031526,000424: 22,3613           00161                                    MPAC       +4                         
031527,000425: 22,3614           51025                           DSU      BPL                                   #  HPERMIN AT (-29)M FOR EARTH, (-27)M MOON
031528,000426: 22,3615           02172                                    HPERMIN                               #  IF HPER L/   HPERMIN (300 OR 35)KFT,
031529,000427: 22,3616           45622                                    DOTPER                                #   THEN ZERO INTO -TPER.
031530,000428: 22,3617           52145                           DLOAD    GOTO                                  #    OTHERWISE CALCULATE TPER.
031531,000429: 22,3620           06520                                    HI6ZEROS                              
031532,000430: 22,3621           45626                                    SKIPTPER                              
031533,000431: 22,3622           45145        DOTPER             DLOAD    CALL                                  
031534,000432: 22,3623           00017                                    RPER                                  
031535,000433: 22,3624           57447                                    CALCTPER                              
031536,000434: 22,3625           77676                           DCOMP                                          #  TPER IS PUT NEG INTO -TPER.
031537,000435: 22,3626           16134        SKIPTPER           STODL    -TPER                                 
031538,000436: 22,3627           02172                                    HPERMIN                               #  HPERMIN AT (-29)M FOR EARTH, (-27)M MOON
031539,000437: 22,3630           45015                           DAD      CALL                                  
031540,000438: 22,3631           02174                                    RPADTEM                               #  RPADTEM AT (-29)M FOR EARTH, (-27)M MOON
031541,000439: 22,3632           57452                                    CALCTFF                               #  GIVES 59M59S FOR TFF IF RPER G/
031542,000440: 22,3633           77676                           DCOMP                                          #    HPERMIN + RPADTEM. (TPER WAS NON ZERO)
031543,000441: 22,3634           36132                           STCALL   TFF                                   #  OTHERWISE COMPUTES TFF.       (GOTO)
031544,000442: 22,3635           00051                                    S2                                    
031545,000443: 
031546,000444: 22,3636           51025        MAXCHK             DSU      BPL                                   #  IF C(MPAC) > 9999.9 NM, MPAC = 9999.9 NM
031547,000445: 22,3637           05646                                    MAXNM                                 
031548,000446: 22,3640           45643                                    +3                                    #  OTHERWISE C(MPAC) = B(MPAC).
031549,000447: 22,3641           43415                           DAD      RVQ                                   
031550,000448: 22,3642           05646                                    MAXNM                                 
031551,000449: 22,3643           43545                 +3        DLOAD    RVQ                                   #  (USED BY P30 - P37 ALSO)
031552,000450: 22,3644           05646                                    MAXNM                                 
031553,000451: 
031554,000452: 22,3645           01065 05603  MAXNM              2OCT     0106505603                            
031555,000453: 

Page 716 This page of the original assembly-listing hardcopy was empty, except for messages generated by the assembler.


End of include-file R30.agc.  Parent file is MAIN.agc