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.

039207,000002:                                                                                                  ## Copyright:   Public domain.
039208,000003:                                                                                                  ## Filename:    TVCEXECUTIVE.agc
039209,000004:                                                                                                  ## Purpose:     Part of the source code for Colossus build 237.
039210,000005:                                                                                                  ##              This is for the Command Module's (CM) Apollo Guidance
039211,000006:                                                                                                  ##              Computer (AGC), for Apollo 8.
039212,000007:                                                                                                  ## Assembler:   yaYUL
039213,000008:                                                                                                  ## Contact:     Jim Lawton <jim DOT lawton AT gmail DOT com>
039214,000009:                                                                                                  ## Website:     www.ibiblio.org/apollo/index.html
039215,000010:                                                                                                  ## Page Scans:  www.ibiblio.org/apollo/ScansForConversion/Colossus237/
039216,000011:                                                                                                  ## Mod history: 2011-03-06 JL   Adapted from corresponding Colossus 249 file.
039217,000012:                                                                                                  ##              2017-01-01 RSB  Proofed comment text using octopus/ProoferComments,
039218,000013:                                                                                                  ##                              and fixed errors found.
039219,000014:                                                                                                  ##              2017-01-20 RSB  Fixed comment-text errors noted while diff'ing
039220,000015:                                                                                                  ##                              vs Colossus 249.
039221,000016: 

Page 900

039223,000018:                                                                                                  #  PROGRAM NAME.... TVCEXECUTIVE, CONSISTING OF TVCEXEC, NEEDLEUP, VARGAINS
039224,000019:                                                                                                  #                   REPCHEK, SWTCHOVR, CG.CORR, STRKUP, TVCEXFIN, ETC.
039225,000020:                                                                                                  #  LOG SECTION....TVCEXECUTIVE     SUBROUTINE ....DAPCSM
039226,000021:                                                                                                  #  MOD BY ENGEL                    DATE 23 OCT, 1967
039227,000022: 
039228,000023:                                                                                                  #  FUNCTIONAL DESCRIPTION....
039229,000024: 
039230,000025:                                                                                                  #      *A SELF-PERPETUATING WAITLIST TASK AT 1/2 SECOND INTERVALS WHICH:
039231,000026:                                                                                                  #       PREPARES THE ROLL TVC DAP LADDERS
039232,000027:                                                                                                  #       PREPARES THE ROLL FDAI NEEDLE (FLY-TO  OGA ERROR)
039233,000028:                                                                                                  #       PREPARES THE ROLL PHASE PLANE  OGAERR  (FLY-FROM  OGA ERROR)
039234,000029:                                                                                                  #       PREPARES THE TVC ROLLDAP TASK WAITLIST CALL (3 CS DELAY)
039235,000030:                                                                                                  #       UPDATES THE NEEDLES DISPLAY
039236,000031:                                                                                                  #       IMPLEMENTS VARIABLE GAINS AND VARIABLE VEHICLE MASS
039237,000032:                                                                                                  #       PROVIDES FOR SWITCHOVER
039238,000033:                                                                                                  #       PROVIDES FOR A SINGLE-SHOT THRUST MISALIGNMENT CORRECTION AT SWTOVR
039239,000034:                                                                                                  #       PROVIDES FOR REPETITIVE THRUST MISALIGNMENT CORRECTIONS FOLLOWING
039240,000035:                                                                                                  #            SWITCHOVER
039241,000036:                                                                                                  #       PERFORMS CERTAIN STROKE TEST FUNCTIONS
039242,000037: 
039243,000038:                                                                                                  #  CALLING SEQUENCE....
039244,000039: 
039245,000040:                                                                                                  #      *TVCEXEC CALLED AS A WAITLIST TASK, IN PARTICULAR BY TVCINIT4 AND BY
039246,000041:                                                                                                  #       ITSELF, BOTH AT 1/2 SECOND INTERVALS
039247,000042: 
039248,000043:                                                                                                  #  NORMAL EXIT MODE.... TASKOVER
039249,000044: 
039250,000045:                                                                                                  #  ALARM OR ABORT EXIT MODES.... NONE
039251,000046: 
039252,000047:                                                                                                  #  SUBROUTINES CALLED....NEEDLER, S40.15, MASSPROP, TASKOVER, IBNKCALL
039253,000048: 
039254,000049:                                                                                                  #  OTHER INTERFACES....
039255,000050: 
039256,000051:                                                                                                  #      *TVCRESTART PACKAGE FOR RESTARTS
039257,000052:                                                                                                  #      *PITCHDAP, YAWDAP FOR VARIABLE GAINS AND ENGINE TRIM ANGLES
039258,000053:                                                                                                  #      *S40.8 FOR KPRIMEDT AT SWITCHOVER
039259,000054: 
039260,000055:                                                                                                  #  ERASABLE INITIALIZATION REQUIRED....
039261,000056: 
039262,000057:                                                                                                  #      *SEE TVCDAPON....TVCINIT4
039263,000058:                                                                                                  #      *VARK AND 1/CONACC (S40.15 OF R03)
039264,000059:                                                                                                  #      *V68 INITIALIZATION PRIOR TO SWITCHOVER OR FOLLOWING A RESTART
039265,000060:                                                                                                  #       DURING A STROKE TEST, IF STROKE TEST FUNCTIONS ARE TO BE TESTED
039266,000061:                                                                                                  #      *PAD LOADS EREPFRAC, ECORFRAC ETC.
039267,000062:                                                                                                  #      *BITS 15,14 OF FLAGWRD6 (T5 BITS)
039268,000063:                                                                                                  #      *TVCEXPHS FOR RESTARTS
039269,000064:                                                                                                  #      *ENGINE-ON BIT (11.13) FOR RESTARTS
039270,000065:                                                                                                  #      *CDUX, OGAD
039271,000066: 
039272,000067:                                                                                                  #  OUTPUT....

Page 901

039274,000069:                                                                                                  #      *ROLL TVC DAP LADDERS, FDAI NEEDLE (AK), AND PHASE PLANE OGAERR
039275,000070:                                                                                                  #      *VARIABLE GAINS FOR PITCH/YAW AND ROLL TVC DAPS
039276,000071:                                                                                                  #      *SINGLE-SHOT AND REPETITIVE CORRECTIONS TO ENGINE TRIM ANGLES
039277,000072:                                                                                                  #       PACTOFF AND YACTOFF
039278,000073:                                                                                                  #      *CHANGES TO DAP SAMPLE RATES, DAP GAINS, AND STEERING-GAIN SCALING
039279,000074:                                                                                                  #       AT (LEM-ON) SWITCHOVER
039280,000075:                                                                                                  #      *STROKER, 4 SECONDS AFTER SWITCHOVER WHEN PRIOR V66, OR 2.5
039281,000076:                                                                                                  #       SECONDS AFTER RESTART DURING A STROKE TEST
039282,000077: 
039283,000078:                                                                                                  #  DEBRIS.... MUCH, BUT SHAREABLE WITH RCS/ENTRY, ALL IN EBANK6
039284,000079: 
039285,000080: 
039286,000081: 16,2660                                           BANK     16                                    
039287,000082: 16,2000                                           SETLOC   DAPROLL                               
039288,000083: 16,2000                                           BANK                                           
039289,000084: 16,2660  E6,1742                                  EBANK=   BZERO                                 
039290,000085: 16,2660                                           COUNT*   $$/TVCX                               
039291,000086: 16,2660           40102        TVCEXEC            CS       FLAGWRD6                              #  CHECK FOR TERMINATION (BITS 15,14 READ
039292,000087: 16,2661           74105                           MASK     OCT60000                              #       10 FROM TVCDAPON TO RCSDAPON)
039293,000088: 16,2662           00006                           EXTEND                                         
039294,000089: 16,2663           63142                           BZMF     TVCEXFIN                              #  TERMINATE
039295,000090: 
039296,000091: 16,2664           34731                           CAF      .5SEC                                 #  W.L. CALL TO PERPETUATE TVCEXEC
039297,000092: 16,2665           05140                           TC       WAITLIST                              
039298,000093: 16,2666  E6,1742                                  EBANK=   BZERO                                 
039299,000094: 16,2666           02660 34066                     2CADR    TVCEXEC                               
039300,000095: 
039301,000096: 16,2670           30032        ROLLPREP           CAE      CDUX                                  #  UPDATE ROLL LADDERS (NO NEED TO RESTART-
039302,000097: 16,2671           57672                           XCH      OGANOW                                #       PROTECT, SINCE ROLL DAPS RE-START)
039303,000098: 16,2672           57673                           XCH      OGAPAST                               
039304,000099: 
039305,000100: 16,2673           31450                           CAE      OGAD                                  #  PREPARE ROLL FDAI NEEDLE WITH FLY-TO
039306,000101: 16,2674           00006                           EXTEND                                         #       ERROR (COMMAND - MEASURED)
039307,000102: 16,2675           21672                           MSU      OGANOW                                
039308,000103: 16,2676           55476                           TS       AK                                    #  FLY-TO OGA ERROR, SC.AT B-1 REVS
039309,000104: 
039310,000105: 16,2677           00006                           EXTEND                                         #  PREPARE ROLL DAP PHASE PLANE  OGAERR
039311,000106: 16,2700           77705                           MP       -BIT14                                
039312,000107: 16,2701           55674                           TS       OGAERR                                #  PHASE-PLANE (FLY-FROM) OGAERROR,
039313,000108:                                                                                                  #       SC.AT B+0 REVS
039314,000109: 
039315,000110: 16,2702           36214                           CAF      THREE                                 #  SET UP ROLL DAP TASK (ALLOW SOME TIME)
039316,000111: 16,2703           05140                           TC       WAITLIST                              
039317,000112: 16,2704  E6,1742                                  EBANK=   BZERO                                 
039318,000113: 16,2704           03312 34066                     2CADR    ROLLDAP                               
039319,000114: 16,2706           04633        NEEDLEUP           TC       IBNKCALL                              #  DO A NEEDLES UPDATE (RETURNS AFTER CADR)
039320,000115: 16,2707           42404                           CADR     NEEDLER                               #       (NEEDLES RESTARTS ITSELF)
039321,000116: 

Page 902

039323,000118: 16,2710           34676        VARGAINS           CAF      BIT13                                 #  CHECK ENGINE-ON BIT TO INHIBIT VARIABLE
039324,000119: 16,2711           00006                           EXTEND                                         #       GAINS AND MASS IF ENGINE OFF
039325,000120: 16,2712           02011                           RAND     DSALMOUT                              #  CHANNEL 11
039326,000121: 16,2713           10000                           CCS      A                                     
039327,000122: 16,2714           12720                           TCF      +4                                    #      ON , SO OK TO UPDATE GAINS AND MASS
039328,000123: 16,2715           34711                 +5        CAF      TWO                                   #       OFF, SO BYPASS MASS/GAIN UPDATES,
039329,000124: 16,2716           55661                           TS       TVCEXPHS                              #            ALSO ENTRY FROM CCS BELOW WITH
039330,000125: 16,2717           12750                           TCF      SWT/COR                               #            VCNTR = -0 (V97 R40 ENGFAIL)
039331,000126: 
039332,000127: 16,2720           11653                           CCS      VCNTR                                 #       TEST FOR GAIN UPDATE TIME
039333,000128: 16,2721           12725                           TCF      +4                                    #            NOT YET
039334,000129: 16,2722           12731                           TCF      GAINCHNG                              #            NOW
039335,000130: 16,2723           12723                           TCF      +0                                    #            NOT USED
039336,000131: 16,2724           12715                           TCF      VARGAINS   +5                         #            NO, LOTHRUST (S40.8 R40)
039337,000132: 
039338,000133: 16,2725           55663                 +4        TS       VCNTRTMP                              #       PROTECT VCNTR AND
039339,000134: 16,2726           31474                           CAE      CSMMASS                               #      CSMMASS DURING AN IMPULSIVE BURN
039340,000135: 16,2727           55662                           TS       MASSTMP                               
039341,000136: 16,2730           12741                           TCF      EXECCOPY                              
039342,000137: 
039343,000138: 16,2731           04633        GAINCHNG           TC       IBNKCALL                              #  UPDATE IXX, IAVG, IAVG/TLX
039344,000139: 16,2732           13232                           CADR     FIXCW                                 #  MASSPROP ENTRY  (ALREADY INITIALIZED)
039345,000140: 16,2733           03145                           TC       S40.15                                #  UPDATE 1/CONACC, VARK
039346,000141: 16,2734           41647                           CS       TENMDOT                               #  UPDATE MASS FOR NEXT 10 SEC. OF BURN
039347,000142: 16,2735           61474                           AD       CSMMASS                               
039348,000143: 16,2736           55662                           TS       MASSTMP                               #  KG B+16
039349,000144: 
039350,000145: 16,2737           34374                           CAF      NINETEEN                              #  RESET THE VARIABLE-GAIN UPDATE COUNTER
039351,000146: 16,2740           55663        NOUPDATE           TS       VCNTRTMP                              #  (COUNTDOWN, FROM VARGAINS +1)
039352,000147: 
039353,000148: 16,2741           25661        EXECCOPY           INCR     TVCEXPHS                              #  RESTART-PROTECT THE COPYCYCLE        (1)
039354,000149: 
039355,000150: 16,2742           31662                           CAE      MASSTMP                               #  CSMMASS KG B+16
039356,000151: 16,2743           55474                           TS       CSMMASS                               
039357,000152: 
039358,000153: 16,2744           31663                           CAE      VCNTRTMP                              #  VCNTR
039359,000154: 16,2745           55653                           TS       VCNTR                                 
039360,000155: 16,2746           55444                           TS       V97VCNTR                              #  FOR ENGFAIL (R41) MASS UPDATES AT SPSOFF
039361,000156: 
039362,000157: 16,2747           25661                           INCR     TVCEXPHS                              #  COPYCYCLE OVER                       (2)
039363,000158: 
039364,000159: 16,2750           11447        SWT/COR            CCS      CNTR                                  #  CHECK FOR SWITCHOVER/CG.CORRECTION
039365,000160: 16,2751           12755                           TCF      +4                                    #       NOT YET
039366,000161: 16,2752           12773                           TCF      SWTCHOVR                              #       NOW
039367,000162: 16,2753           12761                           TCF      REPCHEK                               #       PRIOR SWITCHOVER (OR NONE)
039368,000163: 16,2754           12773                           TCF      SWTCHOVR                              #       NOW (1/2 SEC SWITCHOVER, ONLY)
039369,000164: 
039370,000165: 16,2755           55707                 +4        TS       CNTRTMP                               #  COUNT DOWN
039371,000166: 16,2756           34716                           CAF      SEVEN                                 #  SETUP TVCEXPHS FOR ENTRY AT CNTRCOPY
039372,000167: 16,2757           55661                           TS       TVCEXPHS                              

Page 903

039374,000169: 16,2760           13122                           TCF      CNTRCOPY                              
039375,000170: 
039376,000171: 16,2761           31652        REPCHEK            CAE      REPFRAC                               #  CHECK FOR REPETITIVE UPDATES
039377,000172: 16,2762           00006                           EXTEND                                         
039378,000173: 16,2763           62770                           BZMF     +5                                    #       NO   (NEG OR +-ZERO)
039379,000174: 16,2764           55446                           TS       TEMPDAP    +1                         #       YES, SET UP CORRECTION FRACTION
039380,000175: 16,2765           34715                           CAF      FIVE                                  #            ADVANCE TVCEXPHS
039381,000176: 16,2766           55661                           TS       TVCEXPHS                              
039382,000177: 16,2767           13053                           TCF      CORSETUP                              
039383,000178: 
039384,000179: 16,2770           34707                 +5        CAF      EIGHT                                 
039385,000180: 16,2771           55661                           TS       TVCEXPHS                              
039386,000181: 16,2772           13125                           TCF      STRKUP                                
039387,000182: 
039388,000183: 16,2773           34676        SWTCHOVR           CAF      BIT13                                 #  CHECK ENGINE-ON BIT, NOT PERMITTING
039389,000184: 16,2774           00006                           EXTEND                                         #       SWITCHOVER DURING ENGINE-SHUTDOWN
039390,000185: 16,2775           02011                           RAND     DSALMOUT                              #       TAILOFF
039391,000186: 16,2776           10000                           CCS      A                                     
039392,000187: 16,2777           13001                           TCF      +2                                    #  OK TO SWITCHOVER
039393,000188: 16,3000           13142                           TCF      TVCEXFIN                              #  DONT SWITCHOVER, TERMINATE
039394,000189: 
039395,000190: 16,3001           40105                           CS       FLAGWRD9                              #  SET SWITCHOVER FLAG (SWTOVER) FOR DWNLNK
039396,000191: 16,3002           74674                           MASK     BIT15                                 #       AND POST-BURN TRIM UPDATES (SEE
039397,000192: 16,3003           26105                           ADS      FLAGWRD9                              #       ..BESTTRIM.. (P40-P47))
039398,000193: 
039399,000194: 16,3004           31466                           CAE      DAPDATR1                              #  SWITCHOVER....CHECK FOR LEM-OFF/ON
039400,000195: 16,3005           74676                           MASK     BIT13                                 #  (NOTE, SHOWS LEM-OFF)
039401,000196: 16,3006           00006                           EXTEND                                         
039402,000197: 16,3007           13013                           BZF      GAINDOWN                              #  LEM-ON....FULL SWITCHOVER/CG.CORRECTION
039403,000198: 
039404,000199: 16,3010           34710                           CAF      FOUR                                  #  LEM-OFF....NO SWITCHOVER, JUST CG.CORR.
039405,000200: 16,3011           55661                           TS       TVCEXPHS                              
039406,000201: 16,3012           13050                           TCF      TEMPSET                               
039407,000202: 
039408,000203: 16,3013           31420        GAINDOWN           CAE      ETVCDT/2                              #  LEM-ON.... DROP GAIN BY (OLDTVCDT/8CS)SQ
039409,000204: 16,3014           00006                           EXTEND                                         
039410,000205: 16,3015           74706                           MP       BIT5                                  
039411,000206: 16,3016           22000                           LXCH     A                                     
039412,000207: 16,3017           00006                           EXTEND                                         
039413,000208: 16,3020           70000                           MP       A                                     
039414,000209: 16,3021           22000                           LXCH     A                                     #  (TVCDT/8CS)SQD, SC.AT 8+2
039415,000210: 
039416,000211: 16,3022           00006                           EXTEND                                         #  PREPARE NEW GAIN CONSTANT
039417,000212: 16,3023           71646                           MP       KTLX/I                                
039418,000213: 16,3024           20001                           DDOUBL                                         
039419,000214: 16,3025           20001                           DDOUBL                                         
039420,000215: 16,3026           55702                           TS       TKTLX/I                               #  (FOR COPYCYCLE)
039421,000216: 
039422,000217: 16,3027           25661        SWTCOPY            INCR     TVCEXPHS                              #  RESTART-PROTECT THE COPYCYCLE        (3)
039423,000218: 

Page 904

039425,000220: 16,3030           37677                           CAF      OCT37774                              #  LEM-ON ONLY..... T5 TIMER
039426,000221: 16,3031           55635                           TS       T5TVCDT                               
039427,000222: 
039428,000223: 16,3032           31414                           CAE      EKPRIME    +1                         #  PREPARE KPRIMEDT FOR 80MS DAP, USING
039429,000224: 16,3033           60000                           DOUBLE                                         
039430,000225: 16,3034           60000                           DOUBLE                                         
039431,000226: 16,3035           55644                           TS       KPRIMEDT                              #       (KPRIMEDT+1 IS ZERO)
039432,000227: 
039433,000228:                                                                                                  #                                          SCALING OF OMEGAC HAS CHANGED, BUT NO
039434,000229:                                                                                                  #                                               CHANGE OF REGISTERS.  RATE COMMANDS
039435,000230:                                                                                                  #                                               ARE LOW BY  (OLD TVCDT)/80,  UNTIL
039436,000231:                                                                                                  #                                               NEXT S40.6 COMPUTATION, WHICH USES
039437,000232:                                                                                                  #                                               THE NEW  KPRIMEDT.
039438,000233: 
039439,000234: 16,3036           31702                           CAE      TKTLX/I                               #  GAIN CONSTANT
039440,000235: 16,3037           55646                           TS       KTLX/I                                
039441,000236: 
039442,000237: 16,3040           03154                           TC       S40.15     +7                         #  UPDATE VARK (ONLY, NO CHANGE 1/CONACC)
039443,000238: 
039444,000239: 16,3041           11614        STRKCALL           CCS      STROKER                               #  CHECK STROKER FOR VERB 68 INDICATION
039445,000240: 16,3042           13047                           TCF      +5                                    #       STROKE TEST IN PROGRESS (80MS DAP)
039446,000241: 16,3043           13047                           TCF      +4                                    #       +0 SAYS NO VERB 68 YET
039447,000242: 16,3044           13047                           TCF      +3                                    #       STROKE TEST IN PROGRESS (80MS DAP)
039448,000243: 16,3045           34707                           CAF      EIGHT                                 #       -0 SAYS PRIOR VERB68, SO START
039449,000244: 16,3046           55664                           TS       STRKTIME                              #            STROKE TEST IN 4 SECONDS
039450,000245: 
039451,000246: 16,3047           25661                 +543      INCR     TVCEXPHS                              #  COPYCYCLE OVER (SWTCHOVR ENTRY NEXT) (4)
039452,000247: 
039453,000248: 16,3050           31422        TEMPSET            CAE      ECORFRAC                              #        SET UP CORRECTION FRACTION
039454,000249: 16,3051           55446                           TS       TEMPDAP    +1                         
039455,000250: 
039456,000251: 16,3052           25661                           INCR     TVCEXPHS                              #  ENTRY FROM REPCHECK AT NEXT LOCATION (5)
039457,000252: 
039458,000253: 16,3053           31466        CORSETUP           CAE      DAPDATR1                              #  CHECK FOR LEM-OFF/ON
039459,000254: 16,3054           74676                           MASK     BIT13                                 #  (NOTE, SHOWS LEM-OFF)
039460,000255: 16,3055           00006                           EXTEND                                         
039461,000256: 16,3056           13060                           BZF      +2                                    #  LEM IS ON,  PICK UP   TEMPDAP+1
039462,000257: 16,3057           31446                           CAE      TEMPDAP    +1                         #  LEM IS OFF, PICK UP 2(TEMPDAP+1)
039463,000258: 16,3060           61446                           AD       TEMPDAP    +1                         
039464,000259: 16,3061           55445                           TS       TEMPDAP                               #  CG.CORR USES TEMPDAP
039465,000260: 
039466,000261: 16,3062           37716                           CAF      NEGONE                                #  SET UP FOR CNTR = -1 (SWTCHOVR DONE)
039467,000262: 16,3063           55707                           TS       CNTRTMP                               #       (COPYCYCLE AT  .CNTRCOPY. )
039468,000263: 
039469,000264: 16,3064           00006        CG.CORR            EXTEND                                         #  PITCH TRIM-TRACKER CORRECTION
039470,000265: 16,3065           31626                           DCA      PDELOFF                               
039471,000266: 16,3066           53704                           DXCH     PACTTMP                               
039472,000267: 16,3067           41425                           CS       PACTOFF                               
039473,000268: 16,3070           61621                           AD       DELPBAR                               
039474,000269: 16,3071           00006                           EXTEND                                         

Page 905

039476,000271: 16,3072           71445                           MP       TEMPDAP                               
039477,000272: 16,3073           20001                           DDOUBL                                         
039478,000273: 16,3074           20001                           DDOUBL                                         
039479,000274: 16,3075           21704                           DAS      PACTTMP                               
039480,000275: 
039481,000276: 16,3076           00006                           EXTEND                                         
039482,000277: 16,3077           31630                           DCA      YDELOFF                               
039483,000278: 16,3100           53706                           DXCH     YACTTMP                               
039484,000279: 16,3101           41426                           CS       YACTOFF                               
039485,000280: 16,3102           61623                           AD       DELYBAR                               
039486,000281: 16,3103           00006                           EXTEND                                         
039487,000282: 16,3104           71445                           MP       TEMPDAP                               
039488,000283: 16,3105           20001                           DDOUBL                                         
039489,000284: 16,3106           20001                           DDOUBL                                         
039490,000285: 16,3107           21706                           DAS      YACTTMP                               
039491,000286: 
039492,000287: 16,3110           25661        CORCOPY            INCR     TVCEXPHS                              #  RESTART-PROTECT THE COPYCYCLE        (6)
039493,000288: 
039494,000289: 16,3111           00006                           EXTEND                                         #  TRIM-ESTIMATES, AND
039495,000290: 16,3112           31704                           DCA      PACTTMP                               
039496,000291: 16,3113           55425                           TS       PACTOFF                               #        TRIMS
039497,000292: 16,3114           53626                           DXCH     PDELOFF                               
039498,000293: 
039499,000294: 16,3115           00006                           EXTEND                                         
039500,000295: 16,3116           31706                           DCA      YACTTMP                               
039501,000296: 16,3117           55426                           TS       YACTOFF                               
039502,000297: 16,3120           53630                           DXCH     YDELOFF                               
039503,000298: 
039504,000299: 16,3121           25661                           INCR     TVCEXPHS                              #  COPYCYCLE OVER (SWT/COR ENTRY NEXT)  (7)
039505,000300: 
039506,000301: 16,3122           31707        CNTRCOPY           CAE      CNTRTMP                               #  UPDATE CNTR (RESTARTS OK, FOLLOWS CPYCY)
039507,000302: 16,3123           55447                           TS       CNTR                                  
039508,000303: 
039509,000304: 16,3124           25661                           INCR     TVCEXPHS                              #  ENTRY FROM REPCHECK AT NEXT LOCATION (8)
039510,000305: 
039511,000306: 16,3125           11664        STRKUP             CCS      STRKTIME                              #  CHECK STROKE TEST START TIME
039512,000307: 16,3126           13131                           TCF      +3                                    #       IN 4SEC DELAY AFTER SWITCHOVER
039513,000308: 16,3127           13133                           TCF      STRKNOW                               #       START STROKE TEST NOW....
039514,000309: 16,3130           13142                           TCF      TVCEXFIN                              #       NO STROKE TEST REQUEST YET
039515,000310: 
039516,000311: 16,3131           55710                           TS       STRKTTMP                              #  COUNT DOWN
039517,000312: 16,3132           13137                           TCF      STRKTCPY                              
039518,000313: 
039519,000314: 16,3133           31412        STRKNOW            CAE      ESTROKER                              #  START THE STROKE TEST NOW....
039520,000315: 16,3134           55614                           TS       STROKER                               
039521,000316: 16,3135           37716                           CAF      NEGONE                                #  KILL THE STROKE TEST CALL
039522,000317: 16,3136           55710                           TS       STRKTTMP                              
039523,000318: 
039524,000319: 16,3137           25661        STRKTCPY           INCR     TVCEXPHS                              #  RESTART-PROTECT THE COPYCYCLE        (9)
039525,000320: 

Page 906

039527,000322: 16,3140           31710                           CAE      STRKTTMP                              
039528,000323: 16,3141           55664                           TS       STRKTIME                              
039529,000324: 
039530,000325: 16,3142           34714        TVCEXFIN           CAF      ZERO                                  #  RESET TVCEXPHS
039531,000326: 16,3143           55661                           TS       TVCEXPHS                              
039532,000327: 
039533,000328: 16,3144           15213                           TCF      TASKOVER                              #  OVER AND OUT
039534,000329: 

Page 907

039536,000331:                                                                                                  #  NAME     S40.15 INERTIA COMPUTATIONS
039537,000332: 16,3145  E6,1650                                  EBANK=   1/CONACC                              
039538,000333: 
039539,000334: 16,3145           31470        S40.15             CAE      IXX                                   #  COMPUTE 1/CONACC (RACC)....IXX SC.AT
039540,000335: 16,3146           00006                           EXTEND                                         #       B+20  KG M SQD
039541,000336: 16,3147           73164                           MP       2PI/M                                 #  2PI/M, SC.AT  1/(B+8 N M)
039542,000337: 16,3150           20001                           DDOUBL                                         
039543,000338: 16,3151           20001                           DDOUBL                                         
039544,000339: 16,3152           20001                           DDOUBL                                         
039545,000340: 16,3153           55650                           TS       1/CONACC                              #  SC.AT  B+9  SEC SQD / REV
039546,000341: 
039547,000342: 16,3154           31646                 +7        CAE      KTLX/I                                #  COMPUTE VARK, SCALING IN THE KTLX/I FOR
039548,000343: 16,3155           00006                           EXTEND                                         #       LM-OFF,ON. ENTRY FROM SWITCHOVER
039549,000344: 16,3156           71472                           MP       IAVG/TLX                              #       SCALED AT B+2  SECONDS-SQUARED
039550,000345: 16,3157           20001                           DDOUBL                                         #       SCALING
039551,000346: 16,3160           20001                           DDOUBL                                         
039552,000347: 16,3161           20001                           DDOUBL                                         
039553,000348: 16,3162           55651                           TS       VARK                                  #       LEM-OFF KPGEN3(0) OR LEM-ON VARK(0)
039554,000349: 
039555,000350: 16,3163           00002                           TC       Q                                     
039556,000351: 
039557,000352: 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