Source Code

These source-code files were derived from scans of the Colossus 237 (Apollo 8 Command Module) program listing from the private collection of original AGC developer Fred Martin. Scanning was by Ron Burkey. Pre-existing Colossus 249 (Apollo 9 CM) source files were used as a template, and changes between Colossus 249 and Colossus 237 were manually transcribed by a team of volunteers. Note that the page images presented online are of reduced quality, and that additional 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 237 OF AGC PROGRAM COLOSSUS 
	BY NASA 2021111-031  1:17 AUG. 24, 1968
Note that the date is the date of the printout, not the date of the program revision.

039200,000002:                                                                                                  ## Copyright:   Public domain.
039201,000003:                                                                                                  ## Filename:    TVCEXECUTIVE.agc
039202,000004:                                                                                                  ## Purpose:     Part of the source code for Colossus build 237.
039203,000005:                                                                                                  ##              This is for the Command Module's (CM) Apollo Guidance
039204,000006:                                                                                                  ##              Computer (AGC), for Apollo 8.
039205,000007:                                                                                                  ## Assembler:   yaYUL
039206,000008:                                                                                                  ## Contact:     Jim Lawton <jim DOT lawton AT gmail DOT com>
039207,000009:                                                                                                  ## Website:     www.ibiblio.org/apollo/index.html
039208,000010:                                                                                                  ## Page Scans:  www.ibiblio.org/apollo/ScansForConversion/Colossus237/
039209,000011:                                                                                                  ## Mod history: 2011-03-06 JL   Adapted from corresponding Colossus 249 file.
039210,000012:                                                                                                  ##              2017-01-01 RSB  Proofed comment text using octopus/ProoferComments,
039211,000013:                                                                                                  ##                              and fixed errors found.
039212,000014:                                                                                                  ##              2017-01-20 RSB  Fixed comment-text errors noted while diff'ing
039213,000015:                                                                                                  ##                              vs Colossus 249.
039214,000016: 

Page 900

039216,000018:                                                                                                  #  PROGRAM NAME.... TVCEXECUTIVE, CONSISTING OF TVCEXEC, NEEDLEUP, VARGAINS
039217,000019:                                                                                                  #                   REPCHEK, SWTCHOVR, CG.CORR, STRKUP, TVCEXFIN, ETC.
039218,000020:                                                                                                  #  LOG SECTION....TVCEXECUTIVE     SUBROUTINE ....DAPCSM
039219,000021:                                                                                                  #  MOD BY ENGEL                    DATE 23 OCT, 1967
039220,000022: 
039221,000023:                                                                                                  #  FUNCTIONAL DESCRIPTION....
039222,000024: 
039223,000025:                                                                                                  #      *A SELF-PERPETUATING WAITLIST TASK AT 1/2 SECOND INTERVALS WHICH:
039224,000026:                                                                                                  #       PREPARES THE ROLL TVC DAP LADDERS
039225,000027:                                                                                                  #       PREPARES THE ROLL FDAI NEEDLE (FLY-TO  OGA ERROR)
039226,000028:                                                                                                  #       PREPARES THE ROLL PHASE PLANE  OGAERR  (FLY-FROM  OGA ERROR)
039227,000029:                                                                                                  #       PREPARES THE TVC ROLLDAP TASK WAITLIST CALL (3 CS DELAY)
039228,000030:                                                                                                  #       UPDATES THE NEEDLES DISPLAY
039229,000031:                                                                                                  #       IMPLEMENTS VARIABLE GAINS AND VARIABLE VEHICLE MASS
039230,000032:                                                                                                  #       PROVIDES FOR SWITCHOVER
039231,000033:                                                                                                  #       PROVIDES FOR A SINGLE-SHOT THRUST MISALIGNMENT CORRECTION AT SWTOVR
039232,000034:                                                                                                  #       PROVIDES FOR REPETITIVE THRUST MISALIGNMENT CORRECTIONS FOLLOWING
039233,000035:                                                                                                  #            SWITCHOVER
039234,000036:                                                                                                  #       PERFORMS CERTAIN STROKE TEST FUNCTIONS
039235,000037: 
039236,000038:                                                                                                  #  CALLING SEQUENCE....
039237,000039: 
039238,000040:                                                                                                  #      *TVCEXEC CALLED AS A WAITLIST TASK, IN PARTICULAR BY TVCINIT4 AND BY
039239,000041:                                                                                                  #       ITSELF, BOTH AT 1/2 SECOND INTERVALS
039240,000042: 
039241,000043:                                                                                                  #  NORMAL EXIT MODE.... TASKOVER
039242,000044: 
039243,000045:                                                                                                  #  ALARM OR ABORT EXIT MODES.... NONE
039244,000046: 
039245,000047:                                                                                                  #  SUBROUTINES CALLED....NEEDLER, S40.15, MASSPROP, TASKOVER, IBNKCALL
039246,000048: 
039247,000049:                                                                                                  #  OTHER INTERFACES....
039248,000050: 
039249,000051:                                                                                                  #      *TVCRESTART PACKAGE FOR RESTARTS
039250,000052:                                                                                                  #      *PITCHDAP, YAWDAP FOR VARIABLE GAINS AND ENGINE TRIM ANGLES
039251,000053:                                                                                                  #      *S40.8 FOR KPRIMEDT AT SWITCHOVER
039252,000054: 
039253,000055:                                                                                                  #  ERASABLE INITIALIZATION REQUIRED....
039254,000056: 
039255,000057:                                                                                                  #      *SEE TVCDAPON....TVCINIT4
039256,000058:                                                                                                  #      *VARK AND 1/CONACC (S40.15 OF R03)
039257,000059:                                                                                                  #      *V68 INITIALIZATION PRIOR TO SWITCHOVER OR FOLLOWING A RESTART
039258,000060:                                                                                                  #       DURING A STROKE TEST, IF STROKE TEST FUNCTIONS ARE TO BE TESTED
039259,000061:                                                                                                  #      *PAD LOADS EREPFRAC, ECORFRAC ETC.
039260,000062:                                                                                                  #      *BITS 15,14 OF FLAGWRD6 (T5 BITS)
039261,000063:                                                                                                  #      *TVCEXPHS FOR RESTARTS
039262,000064:                                                                                                  #      *ENGINE-ON BIT (11.13) FOR RESTARTS
039263,000065:                                                                                                  #      *CDUX, OGAD
039264,000066: 
039265,000067:                                                                                                  #  OUTPUT....

Page 901

039267,000069:                                                                                                  #      *ROLL TVC DAP LADDERS, FDAI NEEDLE (AK), AND PHASE PLANE OGAERR
039268,000070:                                                                                                  #      *VARIABLE GAINS FOR PITCH/YAW AND ROLL TVC DAPS
039269,000071:                                                                                                  #      *SINGLE-SHOT AND REPETITIVE CORRECTIONS TO ENGINE TRIM ANGLES
039270,000072:                                                                                                  #       PACTOFF AND YACTOFF
039271,000073:                                                                                                  #      *CHANGES TO DAP SAMPLE RATES, DAP GAINS, AND STEERING-GAIN SCALING
039272,000074:                                                                                                  #       AT (LEM-ON) SWITCHOVER
039273,000075:                                                                                                  #      *STROKER, 4 SECONDS AFTER SWITCHOVER WHEN PRIOR V66, OR 2.5
039274,000076:                                                                                                  #       SECONDS AFTER RESTART DURING A STROKE TEST
039275,000077: 
039276,000078:                                                                                                  #  DEBRIS.... MUCH, BUT SHAREABLE WITH RCS/ENTRY, ALL IN EBANK6
039277,000079: 
039278,000080: 
039279,000081: 16,2660                                           BANK     16                                    
039280,000082: 16,2000                                           SETLOC   DAPROLL                               
039281,000083: 16,2000                                           BANK                                           
039282,000084: 16,2660  E6,1742                                  EBANK=   BZERO                                 
039283,000085: 16,2660                                           COUNT*   $$/TVCX                               
039284,000086: 16,2660           40102        TVCEXEC            CS       FLAGWRD6                              #  CHECK FOR TERMINATION (BITS 15,14 READ
039285,000087: 16,2661           74105                           MASK     OCT60000                              #       10 FROM TVCDAPON TO RCSDAPON)
039286,000088: 16,2662           00006                           EXTEND                                         
039287,000089: 16,2663           63142                           BZMF     TVCEXFIN                              #  TERMINATE
039288,000090: 
039289,000091: 16,2664           34731                           CAF      .5SEC                                 #  W.L. CALL TO PERPETUATE TVCEXEC
039290,000092: 16,2665           05140                           TC       WAITLIST                              
039291,000093: 16,2666  E6,1742                                  EBANK=   BZERO                                 
039292,000094: 16,2666           02660 34066                     2CADR    TVCEXEC                               
039293,000095: 
039294,000096: 16,2670           30032        ROLLPREP           CAE      CDUX                                  #  UPDATE ROLL LADDERS (NO NEED TO RESTART-
039295,000097: 16,2671           57672                           XCH      OGANOW                                #       PROTECT, SINCE ROLL DAPS RE-START)
039296,000098: 16,2672           57673                           XCH      OGAPAST                               
039297,000099: 
039298,000100: 16,2673           31450                           CAE      OGAD                                  #  PREPARE ROLL FDAI NEEDLE WITH FLY-TO
039299,000101: 16,2674           00006                           EXTEND                                         #       ERROR (COMMAND - MEASURED)
039300,000102: 16,2675           21672                           MSU      OGANOW                                
039301,000103: 16,2676           55476                           TS       AK                                    #  FLY-TO OGA ERROR, SC.AT B-1 REVS
039302,000104: 
039303,000105: 16,2677           00006                           EXTEND                                         #  PREPARE ROLL DAP PHASE PLANE  OGAERR
039304,000106: 16,2700           77705                           MP       -BIT14                                
039305,000107: 16,2701           55674                           TS       OGAERR                                #  PHASE-PLANE (FLY-FROM) OGAERROR,
039306,000108:                                                                                                  #       SC.AT B+0 REVS
039307,000109: 
039308,000110: 16,2702           36214                           CAF      THREE                                 #  SET UP ROLL DAP TASK (ALLOW SOME TIME)
039309,000111: 16,2703           05140                           TC       WAITLIST                              
039310,000112: 16,2704  E6,1742                                  EBANK=   BZERO                                 
039311,000113: 16,2704           03312 34066                     2CADR    ROLLDAP                               
039312,000114: 16,2706           04633        NEEDLEUP           TC       IBNKCALL                              #  DO A NEEDLES UPDATE (RETURNS AFTER CADR)
039313,000115: 16,2707           42404                           CADR     NEEDLER                               #       (NEEDLES RESTARTS ITSELF)
039314,000116: 

Page 902

039316,000118: 16,2710           34676        VARGAINS           CAF      BIT13                                 #  CHECK ENGINE-ON BIT TO INHIBIT VARIABLE
039317,000119: 16,2711           00006                           EXTEND                                         #       GAINS AND MASS IF ENGINE OFF
039318,000120: 16,2712           02011                           RAND     DSALMOUT                              #  CHANNEL 11
039319,000121: 16,2713           10000                           CCS      A                                     
039320,000122: 16,2714           12720                           TCF      +4                                    #      ON , SO OK TO UPDATE GAINS AND MASS
039321,000123: 16,2715           34711                 +5        CAF      TWO                                   #       OFF, SO BYPASS MASS/GAIN UPDATES,
039322,000124: 16,2716           55661                           TS       TVCEXPHS                              #            ALSO ENTRY FROM CCS BELOW WITH
039323,000125: 16,2717           12750                           TCF      SWT/COR                               #            VCNTR = -0 (V97 R40 ENGFAIL)
039324,000126: 
039325,000127: 16,2720           11653                           CCS      VCNTR                                 #       TEST FOR GAIN UPDATE TIME
039326,000128: 16,2721           12725                           TCF      +4                                    #            NOT YET
039327,000129: 16,2722           12731                           TCF      GAINCHNG                              #            NOW
039328,000130: 16,2723           12723                           TCF      +0                                    #            NOT USED
039329,000131: 16,2724           12715                           TCF      VARGAINS   +5                         #            NO, LOTHRUST (S40.8 R40)
039330,000132: 
039331,000133: 16,2725           55663                 +4        TS       VCNTRTMP                              #       PROTECT VCNTR AND
039332,000134: 16,2726           31474                           CAE      CSMMASS                               #      CSMMASS DURING AN IMPULSIVE BURN
039333,000135: 16,2727           55662                           TS       MASSTMP                               
039334,000136: 16,2730           12741                           TCF      EXECCOPY                              
039335,000137: 
039336,000138: 16,2731           04633        GAINCHNG           TC       IBNKCALL                              #  UPDATE IXX, IAVG, IAVG/TLX
039337,000139: 16,2732           13232                           CADR     FIXCW                                 #  MASSPROP ENTRY  (ALREADY INITIALIZED)
039338,000140: 16,2733           03145                           TC       S40.15                                #  UPDATE 1/CONACC, VARK
039339,000141: 16,2734           41647                           CS       TENMDOT                               #  UPDATE MASS FOR NEXT 10 SEC. OF BURN
039340,000142: 16,2735           61474                           AD       CSMMASS                               
039341,000143: 16,2736           55662                           TS       MASSTMP                               #  KG B+16
039342,000144: 
039343,000145: 16,2737           34374                           CAF      NINETEEN                              #  RESET THE VARIABLE-GAIN UPDATE COUNTER
039344,000146: 16,2740           55663        NOUPDATE           TS       VCNTRTMP                              #  (COUNTDOWN, FROM VARGAINS +1)
039345,000147: 
039346,000148: 16,2741           25661        EXECCOPY           INCR     TVCEXPHS                              #  RESTART-PROTECT THE COPYCYCLE        (1)
039347,000149: 
039348,000150: 16,2742           31662                           CAE      MASSTMP                               #  CSMMASS KG B+16
039349,000151: 16,2743           55474                           TS       CSMMASS                               
039350,000152: 
039351,000153: 16,2744           31663                           CAE      VCNTRTMP                              #  VCNTR
039352,000154: 16,2745           55653                           TS       VCNTR                                 
039353,000155: 16,2746           55444                           TS       V97VCNTR                              #  FOR ENGFAIL (R41) MASS UPDATES AT SPSOFF
039354,000156: 
039355,000157: 16,2747           25661                           INCR     TVCEXPHS                              #  COPYCYCLE OVER                       (2)
039356,000158: 
039357,000159: 16,2750           11447        SWT/COR            CCS      CNTR                                  #  CHECK FOR SWITCHOVER/CG.CORRECTION
039358,000160: 16,2751           12755                           TCF      +4                                    #       NOT YET
039359,000161: 16,2752           12773                           TCF      SWTCHOVR                              #       NOW
039360,000162: 16,2753           12761                           TCF      REPCHEK                               #       PRIOR SWITCHOVER (OR NONE)
039361,000163: 16,2754           12773                           TCF      SWTCHOVR                              #       NOW (1/2 SEC SWITCHOVER, ONLY)
039362,000164: 
039363,000165: 16,2755           55707                 +4        TS       CNTRTMP                               #  COUNT DOWN
039364,000166: 16,2756           34716                           CAF      SEVEN                                 #  SETUP TVCEXPHS FOR ENTRY AT CNTRCOPY
039365,000167: 16,2757           55661                           TS       TVCEXPHS                              

Page 903

039367,000169: 16,2760           13122                           TCF      CNTRCOPY                              
039368,000170: 
039369,000171: 16,2761           31652        REPCHEK            CAE      REPFRAC                               #  CHECK FOR REPETITIVE UPDATES
039370,000172: 16,2762           00006                           EXTEND                                         
039371,000173: 16,2763           62770                           BZMF     +5                                    #       NO   (NEG OR +-ZERO)
039372,000174: 16,2764           55446                           TS       TEMPDAP    +1                         #       YES, SET UP CORRECTION FRACTION
039373,000175: 16,2765           34715                           CAF      FIVE                                  #            ADVANCE TVCEXPHS
039374,000176: 16,2766           55661                           TS       TVCEXPHS                              
039375,000177: 16,2767           13053                           TCF      CORSETUP                              
039376,000178: 
039377,000179: 16,2770           34707                 +5        CAF      EIGHT                                 
039378,000180: 16,2771           55661                           TS       TVCEXPHS                              
039379,000181: 16,2772           13125                           TCF      STRKUP                                
039380,000182: 
039381,000183: 16,2773           34676        SWTCHOVR           CAF      BIT13                                 #  CHECK ENGINE-ON BIT, NOT PERMITTING
039382,000184: 16,2774           00006                           EXTEND                                         #       SWITCHOVER DURING ENGINE-SHUTDOWN
039383,000185: 16,2775           02011                           RAND     DSALMOUT                              #       TAILOFF
039384,000186: 16,2776           10000                           CCS      A                                     
039385,000187: 16,2777           13001                           TCF      +2                                    #  OK TO SWITCHOVER
039386,000188: 16,3000           13142                           TCF      TVCEXFIN                              #  DONT SWITCHOVER, TERMINATE
039387,000189: 
039388,000190: 16,3001           40105                           CS       FLAGWRD9                              #  SET SWITCHOVER FLAG (SWTOVER) FOR DWNLNK
039389,000191: 16,3002           74674                           MASK     BIT15                                 #       AND POST-BURN TRIM UPDATES (SEE
039390,000192: 16,3003           26105                           ADS      FLAGWRD9                              #       ..BESTTRIM.. (P40-P47))
039391,000193: 
039392,000194: 16,3004           31466                           CAE      DAPDATR1                              #  SWITCHOVER....CHECK FOR LEM-OFF/ON
039393,000195: 16,3005           74676                           MASK     BIT13                                 #  (NOTE, SHOWS LEM-OFF)
039394,000196: 16,3006           00006                           EXTEND                                         
039395,000197: 16,3007           13013                           BZF      GAINDOWN                              #  LEM-ON....FULL SWITCHOVER/CG.CORRECTION
039396,000198: 
039397,000199: 16,3010           34710                           CAF      FOUR                                  #  LEM-OFF....NO SWITCHOVER, JUST CG.CORR.
039398,000200: 16,3011           55661                           TS       TVCEXPHS                              
039399,000201: 16,3012           13050                           TCF      TEMPSET                               
039400,000202: 
039401,000203: 16,3013           31420        GAINDOWN           CAE      ETVCDT/2                              #  LEM-ON.... DROP GAIN BY (OLDTVCDT/8CS)SQ
039402,000204: 16,3014           00006                           EXTEND                                         
039403,000205: 16,3015           74706                           MP       BIT5                                  
039404,000206: 16,3016           22000                           LXCH     A                                     
039405,000207: 16,3017           00006                           EXTEND                                         
039406,000208: 16,3020           70000                           MP       A                                     
039407,000209: 16,3021           22000                           LXCH     A                                     #  (TVCDT/8CS)SQD, SC.AT 8+2
039408,000210: 
039409,000211: 16,3022           00006                           EXTEND                                         #  PREPARE NEW GAIN CONSTANT
039410,000212: 16,3023           71646                           MP       KTLX/I                                
039411,000213: 16,3024           20001                           DDOUBL                                         
039412,000214: 16,3025           20001                           DDOUBL                                         
039413,000215: 16,3026           55702                           TS       TKTLX/I                               #  (FOR COPYCYCLE)
039414,000216: 
039415,000217: 16,3027           25661        SWTCOPY            INCR     TVCEXPHS                              #  RESTART-PROTECT THE COPYCYCLE        (3)
039416,000218: 

Page 904

039418,000220: 16,3030           37677                           CAF      OCT37774                              #  LEM-ON ONLY..... T5 TIMER
039419,000221: 16,3031           55635                           TS       T5TVCDT                               
039420,000222: 
039421,000223: 16,3032           31414                           CAE      EKPRIME    +1                         #  PREPARE KPRIMEDT FOR 80MS DAP, USING
039422,000224: 16,3033           60000                           DOUBLE                                         
039423,000225: 16,3034           60000                           DOUBLE                                         
039424,000226: 16,3035           55644                           TS       KPRIMEDT                              #       (KPRIMEDT+1 IS ZERO)
039425,000227: 
039426,000228:                                                                                                  #                                          SCALING OF OMEGAC HAS CHANGED, BUT NO
039427,000229:                                                                                                  #                                               CHANGE OF REGISTERS.  RATE COMMANDS
039428,000230:                                                                                                  #                                               ARE LOW BY  (OLD TVCDT)/80,  UNTIL
039429,000231:                                                                                                  #                                               NEXT S40.6 COMPUTATION, WHICH USES
039430,000232:                                                                                                  #                                               THE NEW  KPRIMEDT.
039431,000233: 
039432,000234: 16,3036           31702                           CAE      TKTLX/I                               #  GAIN CONSTANT
039433,000235: 16,3037           55646                           TS       KTLX/I                                
039434,000236: 
039435,000237: 16,3040           03154                           TC       S40.15     +7                         #  UPDATE VARK (ONLY, NO CHANGE 1/CONACC)
039436,000238: 
039437,000239: 16,3041           11614        STRKCALL           CCS      STROKER                               #  CHECK STROKER FOR VERB 68 INDICATION
039438,000240: 16,3042           13047                           TCF      +5                                    #       STROKE TEST IN PROGRESS (80MS DAP)
039439,000241: 16,3043           13047                           TCF      +4                                    #       +0 SAYS NO VERB 68 YET
039440,000242: 16,3044           13047                           TCF      +3                                    #       STROKE TEST IN PROGRESS (80MS DAP)
039441,000243: 16,3045           34707                           CAF      EIGHT                                 #       -0 SAYS PRIOR VERB68, SO START
039442,000244: 16,3046           55664                           TS       STRKTIME                              #            STROKE TEST IN 4 SECONDS
039443,000245: 
039444,000246: 16,3047           25661                 +543      INCR     TVCEXPHS                              #  COPYCYCLE OVER (SWTCHOVR ENTRY NEXT) (4)
039445,000247: 
039446,000248: 16,3050           31422        TEMPSET            CAE      ECORFRAC                              #        SET UP CORRECTION FRACTION
039447,000249: 16,3051           55446                           TS       TEMPDAP    +1                         
039448,000250: 
039449,000251: 16,3052           25661                           INCR     TVCEXPHS                              #  ENTRY FROM REPCHECK AT NEXT LOCATION (5)
039450,000252: 
039451,000253: 16,3053           31466        CORSETUP           CAE      DAPDATR1                              #  CHECK FOR LEM-OFF/ON
039452,000254: 16,3054           74676                           MASK     BIT13                                 #  (NOTE, SHOWS LEM-OFF)
039453,000255: 16,3055           00006                           EXTEND                                         
039454,000256: 16,3056           13060                           BZF      +2                                    #  LEM IS ON,  PICK UP   TEMPDAP+1
039455,000257: 16,3057           31446                           CAE      TEMPDAP    +1                         #  LEM IS OFF, PICK UP 2(TEMPDAP+1)
039456,000258: 16,3060           61446                           AD       TEMPDAP    +1                         
039457,000259: 16,3061           55445                           TS       TEMPDAP                               #  CG.CORR USES TEMPDAP
039458,000260: 
039459,000261: 16,3062           37716                           CAF      NEGONE                                #  SET UP FOR CNTR = -1 (SWTCHOVR DONE)
039460,000262: 16,3063           55707                           TS       CNTRTMP                               #       (COPYCYCLE AT  .CNTRCOPY. )
039461,000263: 
039462,000264: 16,3064           00006        CG.CORR            EXTEND                                         #  PITCH TRIM-TRACKER CORRECTION
039463,000265: 16,3065           31626                           DCA      PDELOFF                               
039464,000266: 16,3066           53704                           DXCH     PACTTMP                               
039465,000267: 16,3067           41425                           CS       PACTOFF                               
039466,000268: 16,3070           61621                           AD       DELPBAR                               
039467,000269: 16,3071           00006                           EXTEND                                         

Page 905

039469,000271: 16,3072           71445                           MP       TEMPDAP                               
039470,000272: 16,3073           20001                           DDOUBL                                         
039471,000273: 16,3074           20001                           DDOUBL                                         
039472,000274: 16,3075           21704                           DAS      PACTTMP                               
039473,000275: 
039474,000276: 16,3076           00006                           EXTEND                                         
039475,000277: 16,3077           31630                           DCA      YDELOFF                               
039476,000278: 16,3100           53706                           DXCH     YACTTMP                               
039477,000279: 16,3101           41426                           CS       YACTOFF                               
039478,000280: 16,3102           61623                           AD       DELYBAR                               
039479,000281: 16,3103           00006                           EXTEND                                         
039480,000282: 16,3104           71445                           MP       TEMPDAP                               
039481,000283: 16,3105           20001                           DDOUBL                                         
039482,000284: 16,3106           20001                           DDOUBL                                         
039483,000285: 16,3107           21706                           DAS      YACTTMP                               
039484,000286: 
039485,000287: 16,3110           25661        CORCOPY            INCR     TVCEXPHS                              #  RESTART-PROTECT THE COPYCYCLE        (6)
039486,000288: 
039487,000289: 16,3111           00006                           EXTEND                                         #  TRIM-ESTIMATES, AND
039488,000290: 16,3112           31704                           DCA      PACTTMP                               
039489,000291: 16,3113           55425                           TS       PACTOFF                               #        TRIMS
039490,000292: 16,3114           53626                           DXCH     PDELOFF                               
039491,000293: 
039492,000294: 16,3115           00006                           EXTEND                                         
039493,000295: 16,3116           31706                           DCA      YACTTMP                               
039494,000296: 16,3117           55426                           TS       YACTOFF                               
039495,000297: 16,3120           53630                           DXCH     YDELOFF                               
039496,000298: 
039497,000299: 16,3121           25661                           INCR     TVCEXPHS                              #  COPYCYCLE OVER (SWT/COR ENTRY NEXT)  (7)
039498,000300: 
039499,000301: 16,3122           31707        CNTRCOPY           CAE      CNTRTMP                               #  UPDATE CNTR (RESTARTS OK, FOLLOWS CPYCY)
039500,000302: 16,3123           55447                           TS       CNTR                                  
039501,000303: 
039502,000304: 16,3124           25661                           INCR     TVCEXPHS                              #  ENTRY FROM REPCHECK AT NEXT LOCATION (8)
039503,000305: 
039504,000306: 16,3125           11664        STRKUP             CCS      STRKTIME                              #  CHECK STROKE TEST START TIME
039505,000307: 16,3126           13131                           TCF      +3                                    #       IN 4SEC DELAY AFTER SWITCHOVER
039506,000308: 16,3127           13133                           TCF      STRKNOW                               #       START STROKE TEST NOW....
039507,000309: 16,3130           13142                           TCF      TVCEXFIN                              #       NO STROKE TEST REQUEST YET
039508,000310: 
039509,000311: 16,3131           55710                           TS       STRKTTMP                              #  COUNT DOWN
039510,000312: 16,3132           13137                           TCF      STRKTCPY                              
039511,000313: 
039512,000314: 16,3133           31412        STRKNOW            CAE      ESTROKER                              #  START THE STROKE TEST NOW....
039513,000315: 16,3134           55614                           TS       STROKER                               
039514,000316: 16,3135           37716                           CAF      NEGONE                                #  KILL THE STROKE TEST CALL
039515,000317: 16,3136           55710                           TS       STRKTTMP                              
039516,000318: 
039517,000319: 16,3137           25661        STRKTCPY           INCR     TVCEXPHS                              #  RESTART-PROTECT THE COPYCYCLE        (9)
039518,000320: 

Page 906

039520,000322: 16,3140           31710                           CAE      STRKTTMP                              
039521,000323: 16,3141           55664                           TS       STRKTIME                              
039522,000324: 
039523,000325: 16,3142           34714        TVCEXFIN           CAF      ZERO                                  #  RESET TVCEXPHS
039524,000326: 16,3143           55661                           TS       TVCEXPHS                              
039525,000327: 
039526,000328: 16,3144           15213                           TCF      TASKOVER                              #  OVER AND OUT
039527,000329: 

Page 907

039529,000331:                                                                                                  #  NAME     S40.15 INERTIA COMPUTATIONS
039530,000332: 16,3145  E6,1650                                  EBANK=   1/CONACC                              
039531,000333: 
039532,000334: 16,3145           31470        S40.15             CAE      IXX                                   #  COMPUTE 1/CONACC (RACC)....IXX SC.AT
039533,000335: 16,3146           00006                           EXTEND                                         #       B+20  KG M SQD
039534,000336: 16,3147           73164                           MP       2PI/M                                 #  2PI/M, SC.AT  1/(B+8 N M)
039535,000337: 16,3150           20001                           DDOUBL                                         
039536,000338: 16,3151           20001                           DDOUBL                                         
039537,000339: 16,3152           20001                           DDOUBL                                         
039538,000340: 16,3153           55650                           TS       1/CONACC                              #  SC.AT  B+9  SEC SQD / REV
039539,000341: 
039540,000342: 16,3154           31646                 +7        CAE      KTLX/I                                #  COMPUTE VARK, SCALING IN THE KTLX/I FOR
039541,000343: 16,3155           00006                           EXTEND                                         #       LM-OFF,ON. ENTRY FROM SWITCHOVER
039542,000344: 16,3156           71472                           MP       IAVG/TLX                              #       SCALED AT B+2  SECONDS-SQUARED
039543,000345: 16,3157           20001                           DDOUBL                                         #       SCALING
039544,000346: 16,3160           20001                           DDOUBL                                         
039545,000347: 16,3161           20001                           DDOUBL                                         
039546,000348: 16,3162           55651                           TS       VARK                                  #       LEM-OFF KPGEN3(0) OR LEM-ON VARK(0)
039547,000349: 
039548,000350: 16,3163           00002                           TC       Q                                     
039549,000351: 
039550,000352: 16,3164           33074        2PI/M              DEC      .00331017  B+8                        #  2PI/M, SC.AT 1/(B+8 N M)

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