Source Code

These source-code files were from the printout at the MIT Museum, with many thanks to Deborah Douglas, the Museum's Curator of Science and Technology, for releasing it to us. The printout was digitally photographed by Paul Fjeld. A team of volunteers transcribed the source code manually from these images or, where appropriate, modified already-transcribed but similar source Colossus 249 (Apollo 9) source code to agree with the images from the printout. Note that the page images presented online are of reduced quality, and that higher-quality images are available. Report any conversion errors or legibility problems in page images to info@sandroid.org. Notations on the program listing read, in part:

	GAP:  ASSEMBLE REVISION 055 OF AGC PROGRAM COMANCHE BY NASA 2021113-051
	10:28 APR.  1,1969
Note that the date is the date of the printout, not the date of the program revision.

009526,000002:                                                                                                  ## Copyright:   Public domain.
009527,000003:                                                                                                  ## Filename:    SXTMARK.agc
009528,000004:                                                                                                  ## Purpose:     Part of the source code for Comanche, build 055. It
009529,000005:                                                                                                  ##              is part of the source code for the Command Module's
009530,000006:                                                                                                  ##              (CM) Apollo Guidance Computer (AGC), Apollo 11.
009531,000007:                                                                                                  ## Assembler:   yaYUL
009532,000008:                                                                                                  ## Reference:   pp. 222-235
009533,000009:                                                                                                  ## Contact:     Ron Burkey <info@sandroid.org>,
009534,000010:                                                                                                  ##              Fabrizio Bernardini <fabrizio@spacecraft.it>
009535,000011:                                                                                                  ## Website:     http://www.ibiblio.org/apollo.
009536,000012:                                                                                                  ## Mod history: 16/05/09 FB     Transcription Batch 2 Assignment.
009537,000013:                                                                                                  ##              2010-08-28 JL   Fixed indentation.
009538,000014:                                                                                                  ##              2016-12-10 RSB  Proofed comments with octopus/ProoferComments
009539,000015:                                                                                                  ##                              and fixed the errors found.
009540,000016:                                                                                                  ##              2017-01-18 RSB  Fixed comment-text errors noted while diff'ing
009541,000017:                                                                                                  ##                              vs Colossus 249.
009542,000018:                                                                                                  ##
009543,000019:                                                                                                  ## The contents of the "Comanche055" files, in general, are transcribed 
009544,000020:                                                                                                  ## from scanned documents. 
009545,000021:                                                                                                  ##
009546,000022:                                                                                                  ##      Assemble revision 055 of AGC program Comanche by NASA
009547,000023:                                                                                                  ##      2021113-051.  April 1, 1969.  
009548,000024:                                                                                                  ##
009549,000025:                                                                                                  ##      This AGC program shall also be referred to as Colossus 2A
009550,000026:                                                                                                  ##
009551,000027:                                                                                                  ##      Prepared by
009552,000028:                                                                                                  ##                      Massachusetts Institute of Technology
009553,000029:                                                                                                  ##                      75 Cambridge Parkway
009554,000030:                                                                                                  ##                      Cambridge, Massachusetts
009555,000031:                                                                                                  ##
009556,000032:                                                                                                  ##      under NASA contract NAS 9-4065.
009557,000033:                                                                                                  ##
009558,000034:                                                                                                  ## Refer directly to the online document mentioned above for further
009559,000035:                                                                                                  ## information.  Please report any errors to info@sandroid.org.
009560,000036: 

Page 222

009562,000038:                                                                                                  #  PROGRAM NAME - SXTMARK                                        DATE - 5 APRIL 1967
009563,000039:                                                                                                  #  PROGRAM MODIFIED BY 258/278 PROGRAMMERS                       LOG SECTION SXTMARK
009564,000040:                                                                                                  #  MOD BY - R. MELANSON TO ADD DOCUMENTATION                     ASSEMBLY SUNDISK REV. 116
009565,000041:                                                                                                  #  
009566,000042:                                                                                                  #  FUNCTIONAL DESCRIPTION-
009567,000043: 
009568,000044:                                                                                                  #        SXTMARK IS CALLED FROM INTERNAL ROUTINES WHICH MAY REQUIRE STAR OR LANDMARK MARKINGS BY THE ASTRONAUT.  IF
009569,000045:                                                                                                  #        THE MARK SYSTEM IS NOT IN USE, SXTMARK RESERVES A VAC AREA FOR MARKING AND REQUESTS EXECUTION OF THE MKVB51
009570,000046:                                                                                                  #        ROUTINE VIA THE EXECUTIVE JOB PRIORITY LIST.  R21 USES THIS ROUTINE TO DETERMINE IF THE MARK SYSTEM CAN BE
009571,000047:                                                                                                  #        USED.  IF YES, SXTMARK RETURNS TO R21 TO PERFORM ITS OWN MARK REQUESTS VIA THE V51 FLASH.
009572,000048: 
009573,000049:                                                                                                  #  CALLING SEQUENCE-
009574,000050: 
009575,000051:                                                                                                  #        CAF     (NO. MARK REQUESTS IN BITS 1-3 OF A)
009576,000052:                                                                                                  #        TC      BANKCALL
009577,000053:                                                                                                  #        CADR    SXTMARK
009578,000054: 
009579,000055:                                                                                                  #  NORMAL EXIT MODE-
009580,000056: 
009581,000057:                                                                                                  #        SWRETURN
009582,000058: 
009583,000059:                                                                                                  #  ALARM OR ABORT EXIT MODE-
009584,000060: 
009585,000061:                                                                                                  #        ABORT
009586,000062: 
009587,000063:                                                                                                  #  OUTPUT-
009588,000064: 
009589,000065:                                                                                                  #        1)      MARKSTAT CONTAINS MARK VALUE (BITS 14-12) AND VAC AREA ADDRESS
009590,000066:                                                                                                  #        2)      QPRET = VAC AREA POINTER VALUE
009591,000067:                                                                                                  #        3)      1ST WORD OF RESERVED VAC AREA SET TO +0
009592,000068:                                                                                                  #        4)      PRIO32 PLACED IN A REGISTER
009593,000069: 
009594,000070:                                                                                                  #  ERASABLE INITIALIZATION-
009595,000071: 
009596,000072:                                                                                                  #        1)      BITS 1-3 OF A = NO. MARKS REQUESTED
009597,000073:                                                                                                  #        2)      BITS 2,3 OF EXTVBACT = 0
009598,000074:                                                                                                  #        3)      A VAC AREA MUST BE AVAILABLE (WORD 1 = ADDRESS OF VAC AREA)
009599,000075: 
009600,000076:                                                                                                  #  DEBRIS-
009601,000077: 
009602,000078:                                                                                                  #        A,Q,L,RUPTREG1,MARKSTAT,QPRET,BIT2 OF EXTVBACT
009603,000079: 
009604,000080: 13,2036                                           BANK     13                                    
009605,000081: 07,2000                                           SETLOC   SXTMARKE                              
009606,000082: 07,2000                                           BANK                                           
009607,000083: 
009608,000084: 07,2002  E7,1725                                  EBANK=   MRKBUF1                               
009609,000085: 07,2002                                           COUNT    07/SXTMK                              
009610,000086: 
009611,000087: 07,2002           00004        SXTMARK            INHINT                                         
009612,000088: 07,2003           54070                           TS       RUPTREG1                              #  NUMBER OF MARKS WANTED
009613,000089: 
009614,000090: 07,2004           36211                           CAF      SIX                                   #  BIT2 = MARKING SYSTEM IN USE
009615,000091: 07,2005           71044                           MASK     EXTVBACT                              #  BIT3 = EXTENDED VERB IN PROGRESS
009616,000092: 07,2006           10000                           CCS      A                                     
009617,000093: 07,2007           02013                           TC       MKABORT                               #  SET THEREFORE ABORT

Page 223

009619,000095: 07,2010           35016                           CAF      BIT2                                  #  NOT SET
009620,000096: 07,2011           27044                           ADS      EXTVBACT                              #  SET IT, RESET IN ENDMARK
009621,000097: 07,2012           02015                           TC       MARKOK                                #  YES, FIND VAC AREA
009622,000098: 
009623,000099: 07,2013           07755        MKABORT            TC       BAILOUT                               
009624,000100: 07,2014           01211                           OCT      01211                                 
009625,000101: 07,2015           10400        MARKOK             CCS      VAC1USE                               #  FIND VAC AREA
009626,000102: 07,2016           02031                           TC       MKVACFND                              
009627,000103: 07,2017           10454                           CCS      VAC2USE                               
009628,000104: 07,2020           02031                           TC       MKVACFND                              
009629,000105: 07,2021           10530                           CCS      VAC3USE                               
009630,000106: 07,2022           02031                           TC       MKVACFND                              
009631,000107: 07,2023           10604                           CCS      VAC4USE                               
009632,000108: 07,2024           02031                           TC       MKVACFND                              
009633,000109: 07,2025           10660                           CCS      VAC5USE                               
009634,000110: 07,2026           02031                           TC       MKVACFND                              
009635,000111: 07,2027           07755                           TC       BAILOUT                               
009636,000112: 07,2030           01207                           OCT      01207                                 
009637,000113: 
009638,000114: 07,2031           65016        MKVACFND           AD       TWO                                   #  ADDRESS OF VAC AREA
009639,000115: 07,2032           55330                           TS       MARKSTAT                              
009640,000116: 07,2033           50000                           INDEX    A                                     
009641,000117: 07,2034           54052                           TS       QPRET                                 #  STORE NEXT AVAILABLE MARK SLOT
009642,000118: 
009643,000119: 07,2035           35021                           CAF      ZERO                                  #  SHOW VAC AREA OCCUPIED
009644,000120: 07,2036           51330                           INDEX    MARKSTAT                              
009645,000121: 07,2037           53777                           TS       0          -1                         
009646,000122: 
009647,000123: 07,2040           05364                           TC       CHECKMM                               #  BACKUP MARK ROUTINE USES SXTMARK
009648,000124: 07,2041           00065                           MM       53         B-14                       
009649,000125: 07,2042           12044                           TCF      +2                                    
009650,000126: 07,2043           14675                           TCF      SWRETURN                              
009651,000127: 07,2044           05364                           TC       CHECKMM                               
009652,000128: 07,2045           00066                           MM       54         B-14                       
009653,000129: 07,2046           12050                           TCF      +2                                    
009654,000130: 07,2047           14675                           TCF      SWRETURN                              
009655,000131: 07,2050           35004                           CAF      BIT12                                 #  DESIRED NUMBER OF MARKS IN 12-14
009656,000132: 07,2051           00006                           EXTEND                                         
009657,000133: 07,2052           70070                           MP       RUPTREG1                              
009658,000134: 07,2053           56001                           XCH      L                                     
009659,000135: 07,2054           27330                           ADS      MARKSTAT                              
009660,000136: 
009661,000137: 07,2055           37667                           CAF      PRIO32                                #  ENTER MARK JOB
009662,000138: 07,2056           05134                           TC       NOVAC                                 
009663,000139: 07,2057     1330                                  EBANK=   MARKSTAT                              
009664,000140: 07,2057           02347 16062                     2CADR    MKVB51                                
009665,000141: 
009666,000142: 07,2061           00003                           RELINT                                         
009667,000143: 07,2062           14675                           TCF      SWRETURN                              #  SAME AS MODEEXIT
009668,000144: 

Page 224

009670,000146:                                                                                                  #  PROGRAM NAME - MKRELEAS                                       DATE - 5 APRIL 1967
009671,000147:                                                                                                  #  PROGRAM MODIFIED BY 258/278 PROGRAMMERS                       LOG SECTION SXTMARK
009672,000148:                                                                                                  #  MOD BY - R. MELANSON TO ADD DOCUMENTATION                     ASSEMBLY SUNDISK REV. 116
009673,000149: 
009674,000150:                                                                                                  #  FUNCTIONAL DESCRIPTION-
009675,000151: 
009676,000152:                                                                                                  #        MKRELEAS IS EXECUTED BY INTERNAL ROUTINES TO RELEASE THE MARK SYSTEM TO MAKE IT AVAILABLE TO OTHER INTERNAL
009677,000153:                                                                                                  #        SYSTEM ROUTINES.  IT ALSO CLEARS THE COARSE OPTICS FLAG BIT AND DISABLES THE OPTICS ERROR COUNTER.
009678,000154: 
009679,000155:                                                                                                  #  CALLING SEQUENCE-
009680,000156: 
009681,000157:                                                                                                  #        TC      BANKCALL
009682,000158:                                                                                                  #        CADR    MKRELEAS
009683,000159: 
009684,000160:                                                                                                  #  NORMAL EXIT MODE-
009685,000161: 
009686,000162:                                                                                                  #        SWRETURN
009687,000163: 
009688,000164:                                                                                                  #  ALARM OR ABORT EXIT MODE-  NONE
009689,000165: 
009690,000166:                                                                                                  #  OUTPUT-
009691,000167: 
009692,000168:                                                                                                  #        1)      BIT9 OPTMODES SET TO 0
009693,000169:                                                                                                  #        2)      OPTIND SET TO -1
009694,000170:                                                                                                  #        3)      1ST WORD OF VAC AREA SET TO VAC ADDRESS TO SIGNIFY AVAILABILITY.
009695,000171:                                                                                                  #        4)      MARKSTAT CLEARED
009696,000172:                                                                                                  #        5)      BIT2 CHANNEL 12 SET TO 0
009697,000173: 
009698,000174:                                                                                                  #  ERASABLE INITIALIZATION-  NONE
009699,000175: 
009700,000176:                                                                                                  #  DEBRIS-
009701,000177: 
009702,000178:                                                                                                  #        A,MARKSTAT,BIT9 OPTMODES,OPTIND,BIT2 CHANNEL 12
009703,000179: 
009704,000180: 07,2063           35021        MKRELEAS           CAF      ZERO                                  #  SHOW MARK SYSTEM NOW AVAILABLE
009705,000181: 07,2064           57330                           XCH      MARKSTAT                              
009706,000182: 07,2065           75046                           MASK     LOW9                                  
009707,000183: 07,2066           10000                           CCS      A                                     
009708,000184: 07,2067           50000                           INDEX    A                                     
009709,000185: 07,2070           54000                           TS       0                                     
009710,000186: 07,2071           00004        MKRLEES            INHINT                                         
009711,000187: 07,2072           45007                           CS       BIT9                                  #  COARSE OPTICS RETURN FLAG.
009712,000188: 07,2073           71331                           MASK     OPTMODES                              
009713,000189: 07,2074           55331                           TS       OPTMODES                              
009714,000190: 
009715,000191: 07,2075           37716                           CA       NEGONE                                
009716,000192: 07,2076           55303                           TS       OPTIND                                #  KILL COARS OPTICS
009717,000193: 
009718,000194: 07,2077           45016                           CS       BIT2                                  #  DISABLE OPTICS ERROR COUNTER
009719,000195: 07,2100           00006                           EXTEND                                         
009720,000196: 07,2101           03012                           WAND     CHAN12                                
009721,000197: 
009722,000198: 07,2102           00003                           RELINT                                         
009723,000199: 07,2103           04675                           TC       SWRETURN                              

Page 225

009725,000201:                                                                                                  #  PROGRAM NAME - MARKRUPT                                       DATE - 5 APRIL 1967
009726,000202:                                                                                                  #  PROGRAM MODIFIED BY 258/278 PROGRAMMERS                       LOG SECTION SXTMARK
009727,000203:                                                                                                  #  MOD BY - R. MELANSON TO ADD DOCUMENTATION                     ASSEMBLY SUNDISK REV. 116
009728,000204: 
009729,000205:                                                                                                  #  FUNCTIONAL DESCRIPTION-
009730,000206:                                                                                                  #        MARKRUPT STORES CDUS,OPTICS AND TIME AND TRANSFERS CONTROL TO THE MARKIT,MARK REJECT OR KEYCOM ROUTINES IF
009731,000207:                                                                                                  #        BITS IN CHANNEL 16 ARE SET AS REQUIRED.
009732,000208: 
009733,000209:                                                                                                  #  CALLING SEQUENCE-
009734,000210:                                                                                                  #        ROUTINE ENTERED VIA KEYRUPT2 WHEN MARK,MARK REJECT OR DSKY KEYS DEPRESSED BY THE OPERATOR.
009735,000211: 
009736,000212:                                                                                                  #  NORMAL EXIT MODE-
009737,000213:                                                                                                  #        MARKIT, MKREJECT OR POSTJUMP ROUTINES (MARK, MARK REJECT OR DSKY CODE)
009738,000214: 
009739,000215:                                                                                                  #  ALARM OR ABORT EXIT MODE-
009740,000216:                                                                                                  #        ALARM AND RESUME
009741,000217: 
009742,000218:                                                                                                  #  OUTPUT-
009743,000219:                                                                                                  #        RUPTSTOR+5 = CDUT, RUPTSTOR+3 = CDUS, RUPTSTOR+2 = CDUY,
009744,000220:                                                                                                  #        RUPTREG3 = CDUZ, RUPTSTOR+6 = CDUX, RUPTSTOR+1 AND SAMPTIME+1 = TIME1,
009745,000221:                                                                                                  #        RUPTSTOR AND SAMPTIME = TIME2
009746,000222: 
009747,000223:                                                                                                  #  ERASABLE INITIALIZATION-
009748,000224:                                                                                                  #        CDUT,CDUS,CDUY,CDUZ,CDUX,TIME2,TIME1,CHANNEL 16 BITS 6,7 OR 1-5
009749,000225: 
009750,000226:                                                                                                  #  DEBRIS-
009751,000227:                                                                                                  #        A,QRUPT,RUPTREG3,SAMPTIME,SAMPTIME+1,RUPTSTOR TO RUPTSTOR+6 EXCEPT RUPTSTOR+4 (LOCATION 67)
009752,000228: 
009753,000229: 07,2104           54016        MARKRUPT           TS       BANKRUPT                              #  STORE CDUS AND OPTICS NOW
009754,000230: 07,2105           30035                           CA       CDUT                                  
009755,000231: 07,2106           54362                           TS       MKCDUT                                
009756,000232: 07,2107           30036                           CA       CDUS                                  
009757,000233: 07,2110           54360                           TS       MKCDUS                                
009758,000234: 07,2111           30033                           CA       CDUY                                  
009759,000235: 07,2112           54357                           TS       MKCDUY                                
009760,000236: 07,2113           30034                           CA       CDUZ                                  
009761,000237: 07,2114           54361                           TS       MKCDUZ                                
009762,000238: 07,2115           30032                           CA       CDUX                                  
009763,000239: 07,2116           54363                           TS       MKCDUX                                
009764,000240: 07,2117           00006                           EXTEND                                         
009765,000241: 07,2120           30025                           DCA      TIME2                                 #  GET TIME
009766,000242: 07,2121           52356                           DXCH     MKT2T1                                
009767,000243: 07,2122           00006                           EXTEND                                         
009768,000244: 07,2123           30356                           DCA      MKT2T1                                
009769,000245: 07,2124           52014                           DXCH     SAMPTIME                              #  RUPT TIME FOR NOUN 65.
009770,000246: 
009771,000247: 07,2125           56002                           XCH      Q                                     
009772,000248: 07,2126           54012                           TS       QRUPT                                 
009773,000249: 
009774,000250: 07,2127           35012                           CAF      BIT6                                  #  SEE IF MARK OR MKREJECT

Page 226

009776,000252: 07,2130           00006                           EXTEND                                         
009777,000253: 07,2131           02016                           RAND     NAVKEYIN                              
009778,000254: 07,2132           10000                           CCS      A                                     
009779,000255: 07,2133           02430                           TC       MARKIT                                #  ITS A MARK
009780,000256: 
009781,000257: 07,2134           35011                           CAF      BIT7                                  #  NOT A MARK, SEE IF MKREJECT
009782,000258: 07,2135           00006                           EXTEND                                         
009783,000259: 07,2136           02016                           RAND     NAVKEYIN                              
009784,000260: 07,2137           10000                           CCS      A                                     
009785,000261: 07,2140           02301                           TC       MKREJECT                              #  ITS A MARK REJECT
009786,000262: 
009787,000263: 07,2141           34362        KEYCALL            CAF      OCT37                                 #  NOT MARK OR MKREJECT, SEE IF KEYCODE
009788,000264: 07,2142           00006                           EXTEND                                         
009789,000265: 07,2143           02016                           RAND     NAVKEYIN                              
009790,000266: 07,2144           00006                           EXTEND                                         
009791,000267: 07,2145           12150                           BZF      +3                                    #  IF NO INBITS
009792,000268: 07,2146           04701                           TC       POSTJUMP                              
009793,000269: 07,2147           17702                           CADR     KEYCOM                                #  IT,S A KEY CODE, NOT A MARK.
009794,000270: 
009795,000271: 07,2150           05650                 +3        TC       ALARM                                 #  ALARM IF NO INBITS
009796,000272: 07,2151           00113                           OCT      113                                   
009797,000273: 07,2152           05333                           TC       RESUME                                
009798,000274: 

Page 227

009800,000276:                                                                                                  #  PROGRAM NAME - MARKCONT                               DATE - 19 SEPT 1967
009801,000277:                                                                                                  #  PROGRAM MODIFIED BY 258/278 PROGRAMMERS               LOG SECTION SXTMARK
009802,000278:                                                                                                  #  MOD BY - R. MELANSON TO ADD DOCUMENTATION             ASSEMBLY SUNDISK REV. 116
009803,000279: 
009804,000280:                                                                                                  #  FUNCTIONAL DESCRIPTION-
009805,000281:                                                                                                  #        MARKCONT IS USED TO PERFORM A SPECIAL MARK FUNCTION FOR R21, TO EXECUTE A SPECIAL DISPLAY OF OPTICS AND TIME OR
009806,000282:                                                                                                  #        TO PERFORM A MARK OF A STAR OR LAND SIGHTING BASED UPON FLASHING V-N.
009807,000283: 
009808,000284:                                                                                                  #  CALLING SEQUENCE-
009809,000285: 
009810,000286:                                                                                                  #        FROM MARKDIF
009811,000287: 
009812,000288:                                                                                                  #  NORMAL EXIT MODE-
009813,000289:                                                                                                  #        TASKOVER
009814,000290: 
009815,000291:                                                                                                  #  ALARM OR ABORT EXIT MODE-
009816,000292:                                                                                                  #        ALARM AND TASKOVER
009817,000293: 
009818,000294:                                                                                                  #  OUTPUT-
009819,000295:                                                                                                  #        1)      FOR R21-
009820,000296:                                                                                                  #                EBANK=EBANK7
009821,000297:                                                                                                  #                MRKBUF1 TO MRKBUF1+6 = TIME2,TIME1,CDUY,OPTICX,CDUZ,OPTICSY,CDUX OF CURRENT R21 MARK FUNCTION.
009822,000298:                                                                                                  #                MRKBUF2 TO MRKBUF2+6 CONTAINS PREVIOUS R21 MARK VALUES.
009823,000299:                                                                                                  #        2)      FOR SPECIAL DISPLAY JOB-
009824,000300:                                                                                                  #                RUPTREG1 AND MRKBUF1 = CDUS,RUPTREG2 AND MRKBUF1+1 = CDUT.
009825,000301:                                                                                                  #                RUPTREG3 AND MRKBUF1+2 = TIME2,RUPTREG4 AND MRKBUF1+3 = TIME1
009826,000302:                                                                                                  #        3)      FOR NORMAL MARKING-
009827,000303:                                                                                                  #                DECREMENT BITS14-12 OF MARKSTAT BY 1,
009828,000304:                                                                                                  #                BIT10 MARKSTAT SET TO 1, INCREMENT QPRET BY 7,
009829,000305:                                                                                                  #                STORE TIME2,TIME1,CDUY,CDUS,CDUZ,CDUT AND CDUX IN VAC+1 TO VAC+7
009830,000306: 
009831,000307:                                                                                                  #  ERASABLE INITIALIZATION-
009832,000308:                                                                                                  #        1)      FOR R21-
009833,000309:                                                                                                  #                BIT14 OF STATE+2 =1, MRKBUF1 TO MRKBUF1+6, ITEMP1, RUPTREG3,
009834,000310:                                                                                                  #                RUPTSTOR TO RUPTSTOR+6 EXCEPT RUPTSTOR+4
009835,000311:                                                                                                  #        2)      FOR SPECIAL DISPLAY JOB-
009836,000312:                                                                                                  #                BIT14 OF STATE+2 =0, MARKSTAT =+0, RUPTREG1,RUPTREG2,RUPTREG3
009837,000313:                                                                                                  #                RUPTREG4,RUPTSTOR,RUPTSTOR+1,RUPTSTOR+3,RUPTSTOR+5,
009838,000314:                                                                                                  #                BIT12 OF STATE+5 (V59 FLAG), MRKBUF1 THRU MRKBUF1+3
009839,000315:                                                                                                  #        3)      FOR NORMAL MARKING-
009840,000316:                                                                                                  #                BIT14 OF STATE+2 =0, MARKSTAT =VAC ADDRESS,A REG,ITEMP1,RUPTREG3,
009841,000317:                                                                                                  #                RUPTSTOR TO RUPTSTOR+6 EXCEPT RUPTSTOR+4
009842,000318: 
009843,000319:                                                                                                  #  DEBRIS-
009844,000320:                                                                                                  #        1)      FOR R21-
009845,000321:                                                                                                  #                A, ITEMP1, MRKBUF1, MRKBUF2
009846,000322:                                                                                                  #        2)      FOR SPECIAL DISPLAY JOB-
009847,000323:                                                                                                  #                A,RUPTREG1,RUPTREG2,RUPTREG3,RUPTREG4,MPAC TO MPAC+3
009848,000324:                                                                                                  #        3)      FOR NORMAL MARKING-
009849,000325:                                                                                                  #                A,MARKSTAT,ITEMP1,QPRET,VAC+1 TO VAC+7 OF VAC AREA IN USE
009850,000326: 

Page 228

009852,000328: 07,2153           35002        MARKCONT           CAF      BIT14                                 
009853,000329: 07,2154           70076                           MASK     STATE      +2                         #  R21 MARK (SPECIAL MARKING FOR R21)
009854,000330: 07,2155           00006                           EXTEND                                         
009855,000331: 07,2156           12170                           BZF      MARKET                                #  NOT SET THEREFORE REGULAR MARKING
009856,000332: 07,2157           36211        MARKIT1            CAF      SIX                                   #  SPECIAL FOR R21
009857,000333: 07,2160           05606                           TC       GENTRAN                               #  TRANSFER MRKBUF1 TO MRKBUF2
009858,000334: 07,2161           01725                           ADRES    MRKBUF1                               
009859,000335: 07,2162           01734                           ADRES    MRKBUF2                               
009860,000336: 
009861,000337: 07,2163           36211                           CAF      SIX                                   #  TRANSFER CURRENT MARK DATA TO MARKBUF1
009862,000338: 07,2164           05606                           TC       GENTRAN                               
009863,000339: 07,2165           00355                           ADRES    MKT2T1                                
009864,000340: 07,2166           01725                           ADRES    MRKBUF1                               
009865,000341: 
009866,000342: 07,2167           15324                           TCF      TASKOVER                              
009867,000343: 
009868,000344: 07,2170           11330        MARKET             CCS      MARKSTAT                              #  SEE IF MARKS CALLED FOR
009869,000345: 07,2171           02225                           TC       MARK2                                 #  COLLECT MARKS
009870,000346: 
009871,000347: 07,2172           35016                           CAF      TWO                                   #  IS MARKING SYSTEM IN USE (BIT2)
009872,000348: 07,2173           71044                           MASK     EXTVBACT                              
009873,000349: 07,2174           00006                           EXTEND                                         
009874,000350: 07,2175           12217                           BZF      MARKET3                               #  MARKING NOT CALLED FOR
009875,000351: 07,2176           35004                           CAF      BIT12                                 
009876,000352: 07,2177           70101                           MASK     STATE      +5                         #  V59FLAG
009877,000353: 07,2200           00006                           EXTEND                                         
009878,000354: 07,2201           12217                           BZF      MARKET3                               #  IF V59FLAG NOT SET-MARK UNCALLED FOR
009879,000355: 07,2202           35061                           CAF      PRIO5                                 #  CALIBRATION MARK (SET) FOR P23
009880,000356: 07,2203           05134                           TC       NOVAC                                 #  SPECIAL DISPLAY JOB
009881,000357: 07,2204  E7,1725                                  EBANK=   MRKBUF1                               
009882,000358: 07,2204           02426 76067                     2CADR    MARKDISP                              
009883,000359: 
009884,000360: 07,2206           36211                           CAF      SIX                                   
009885,000361: 07,2207           05606                           TC       GENTRAN                               #  TRANSFER MARK DATA TO MARKDOWN
009886,000362: 07,2210           00355                           ADRES    MKT2T1                                
009887,000363: 07,2211           01674                           ADRES    MARKDOWN                              
009888,000364: 07,2212           36211                           CAF      SIX                                   
009889,000365: 07,2213           05606                           TC       GENTRAN                               #  TRANSFER MARK DATA TO MRKBUF1 FOR
009890,000366: 07,2214           00355                           ADRES    MKT2T1                                #  SPECIAL DISPLAY OF SHAFT AND TRUNNION
009891,000367: 07,2215           01725                           ADRES    MRKBUF1                               #  IF V59 ACTING
009892,000368: 07,2216           15324                           TCF      TASKOVER                              
009893,000369: 07,2217           05650        MARKET3            TC       ALARM                                 
009894,000370: 07,2220           00122                           OCT      122                                   #  MARKING NOT CALLED FOR
009895,000371: 07,2221           15324                           TCF      TASKOVER                              
009896,000372: 07,2222           05650        114ALM             TC       ALARM                                 #  MARK NOT WANTED
009897,000373: 07,2223           00114                           OCT      114                                   
009898,000374: 07,2224           15324                           TCF      TASKOVER                              
009899,000375: 

Page 229

009901,000377:                                                                                                  #  STORE MARK DATA IN MKVAC AND INCREMENT POINTER
009902,000378: 
009903,000379: 07,2225           67711        MARK2              AD       74K                                   #  SEE IF MARKS WANTED-REDUCE MARKS WANTED
009904,000380: 07,2226           00006                           EXTEND                                         
009905,000381: 07,2227           62222                           BZMF     114ALM                                #  MARK NOT WANTED-ALARM
009906,000382: 07,2230           55330                           TS       MARKSTAT                              
009907,000383: 07,2231           40000                           COM                                            
009908,000384: 07,2232           75006                           MASK     BIT10                                 #  SET BIT10 TO ENABLE REJECT
009909,000385: 07,2233           27330                           ADS      MARKSTAT                              
009910,000386: 
009911,000387: 07,2234           75046                           MASK     LOW9                                  
009912,000388: 07,2235           54061                           TS       ITEMP1                                
009913,000389: 07,2236           50000                           INDEX    A                                     
009914,000390: 07,2237           56052                           XCH      QPRET                                 #  PICK UP MARK SLOT-POINTER
009915,000391: 07,2240           54062                           TS       ITEMP2                                #  SAVE CURRENT POINTER
009916,000392: 07,2241           65023                           AD       SEVEN                                 #  INCREMENT POINTER
009917,000393: 07,2242           50061                           INDEX    ITEMP1                                
009918,000394: 07,2243           54052                           TS       QPRET                                 #  STORE ADVANCED POINTER
009919,000395: 
009920,000396: 07,2244           00006        VACSTOR            EXTEND                                         
009921,000397: 07,2245           30356                           DCA      MKT2T1                                
009922,000398: 07,2246           50062                           INDEX    ITEMP2                                
009923,000399: 07,2247           52001                           DXCH     0                                     
009924,000400: 07,2250           30357                           CA       MKCDUY                                
009925,000401: 07,2251           50062                           INDEX    ITEMP2                                
009926,000402: 07,2252           54002                           TS       2                                     
009927,000403: 07,2253           30360                           CA       MKCDUS                                
009928,000404: 07,2254           50062                           INDEX    ITEMP2                                
009929,000405: 07,2255           54003                           TS       3                                     
009930,000406: 07,2256           30361                           CA       MKCDUZ                                
009931,000407: 07,2257           50062                           INDEX    ITEMP2                                
009932,000408: 07,2260           54004                           TS       4                                     
009933,000409: 07,2261           30362                           CA       MKCDUT                                
009934,000410: 07,2262           50062                           INDEX    ITEMP2                                
009935,000411: 07,2263           54005                           TS       5                                     
009936,000412: 07,2264           30363                           CA       MKCDUX                                
009937,000413: 07,2265           50062                           INDEX    ITEMP2                                
009938,000414: 07,2266           54006                           TS       6                                     
009939,000415: 
009940,000416: 07,2267           37671                           CAF      PRIO34                                #  IF ALL MARKS MADE FLASH VB50
009941,000417: 07,2270           71330                           MASK     MARKSTAT                              
009942,000418: 07,2271           00006                           EXTEND                                         
009943,000419: 07,2272           12274                           BZF      +2                                    
009944,000420: 07,2273           15324                           TCF      TASKOVER                              
009945,000421: 07,2274           37667                           CAF      PRIO32                                
009946,000422: 07,2275           05134                           TC       NOVAC                                 
009947,000423: 07,2276     1330                                  EBANK=   MARKSTAT                              
009948,000424: 07,2276           02422 16062                     2CADR    MKVB50                                
009949,000425: 
009950,000426: 07,2300           15324                           TCF      TASKOVER                              
009951,000427: 

Page 230

009953,000429:                                                                                                  #  PROGRAM NAME - MKREJECT                                       DATE - 5 APRIL 1967
009954,000430:                                                                                                  #  PROGRAM MODIFIED BY 258/278 PROGRAMMERS                       LOG SECTION SXTMARK
009955,000431:                                                                                                  #  MOD BY - R. MELANSON TO ADD DOCUMENTATION                     ASSEMBLY SUNDISK REV. 116
009956,000432: 
009957,000433:                                                                                                  #  FUNCTIONAL DESCRIPTION-
009958,000434:                                                                                                  #        ROUTINE ALLOWS OPERATOR TO REJECT MARK MADE PRIOR TO ACCEPTANCE AND ALLOWS A NEW MARK TO BE MADE BY ASTRONAUT
009959,000435: 
009960,000436:                                                                                                  #  CALLING SEQUENCE-
009961,000437:                                                                                                  #        FROM MARKRUPT IF BIT7 OF CHANNEL 16 IS 1.
009962,000438: 
009963,000439:                                                                                                  #  NORMAL EXIT MODE-
009964,000440:                                                                                                  #        RESUME
009965,000441: 
009966,000442:                                                                                                  #  ALARM OR ABORT EXIT MODE-
009967,000443:                                                                                                  #        ALARM AND RESUME
009968,000444: 
009969,000445:                                                                                                  #  OUTPUT-
009970,000446:                                                                                                  #        1)      FOR R21-
009971,000447:                                                                                                  #                MRKBUF1 SET TO -1
009972,000448:                                                                                                  #        2)      FOR NORMAL MARKING-
009973,000449:                                                                                                  #                BIT10 MARKSTAT =0, INCREMENT NO. MARKS BY 1, DECREMENT QPRET BY 7
009974,000450: 
009975,000451:                                                                                                  #  ERASABLE INITIALIZATION-
009976,000452:                                                                                                  #        1)      FOR R21-
009977,000453:                                                                                                  #                BIT14 OF STATE+2 SET TO 1
009978,000454:                                                                                                  #        2)      FOR NORMAL MARKING-
009979,000455:                                                                                                  #                BIT14 OF STATE+2 SET TO 0, MARKSTAT,QPRET
009980,000456: 
009981,000457:                                                                                                  #  DEBRIS-
009982,000458:                                                                                                  #        1)      FOR R21-
009983,000459:                                                                                                  #                A,MARKSTAT,EBANK
009984,000460:                                                                                                  #        2)      FOR NORMAL MARKING-
009985,000461:                                                                                                  #                A,MARKSTAT,ITEMP1,QPRET
009986,000462: 
009987,000463: 07,2301           35002        MKREJECT           CAF      BIT14                                 
009988,000464: 07,2302           70076                           MASK     STATE      +2                         #  R21 MARK (SPECIAL MARKING FOR R21)
009989,000465: 07,2303           00006                           EXTEND                                         
009990,000466: 07,2304           12310                           BZF      MRKREJCT                              #  NOT SET THEREFORE REGULAR REJECT
009991,000467: 07,2305           37716                           CA       NEGONE                                #  -1 (FOR R22)
009992,000468: 07,2306           55725                           TS       MRKBUF1                               #  -0 IN TIME IS FLAG TO R22 SIGNIFYING A
009993,000469: 07,2307           05333                           TC       RESUME                                #  REJECTED MARK
009994,000470: 07,2310           11330        MRKREJCT           CCS      MARKSTAT                              #  SEE IF MARKS BEING ACCEPTED
009995,000471: 07,2311           02315                           TC       REJECT2                               
009996,000472: 07,2312           05650                           TC       ALARM                                 #  MARKS NOT BEING ACCEPTED
009997,000473: 07,2313           00112                           OCT      112                                   
009998,000474: 07,2314           05333                           TC       RESUME                                
009999,000475: 
010000,000476: 07,2315           45006        REJECT2            CS       BIT10                                 #  SEE IF MARK HAD BEEN MADE SINCE LAST
010001,000477: 07,2316           71330                           MASK     MARKSTAT                              #  REJECT, AND SET BIT10 TO ZERO TO
010002,000478: 07,2317           57330                           XCH      MARKSTAT                              #  SHOW MARK REJECT

Page 231

010004,000480: 07,2320           75006                           MASK     BIT10                                 
010005,000481: 07,2321           10000                           CCS      A                                     
010006,000482: 07,2322           02326                           TC       REJECT3                               
010007,000483: 
010008,000484: 07,2323           05650                           TC       ALARM                                 #  DONT ACCEPT TWO REJECTS TOGETHER
010009,000485: 07,2324           00110                           OCT      110                                   
010010,000486: 07,2325           05333                           TC       RESUME                                
010011,000487: 
010012,000488: 07,2326           35046        REJECT3            CAF      LOW9                                  #  DECREMENT POINTER TO REJECT MARK
010013,000489: 07,2327           71330                           MASK     MARKSTAT                              
010014,000490: 07,2330           54061                           TS       ITEMP1                                
010015,000491: 07,2331           45023                           CS       SEVEN                                 
010016,000492: 07,2332           50061                           INDEX    ITEMP1                                
010017,000493: 07,2333           26052                           ADS      QPRET                                 #  NEW POINTER
010018,000494: 
010019,000495: 07,2334           35004                           CAF      BIT12                                 #  INCREMENT MARKS WANTED AND IF FIELD
010020,000496: 07,2335           61330                           AD       MARKSTAT                              #  IS NOW NON-ZERO, CHANGE TO VB51 TO
010021,000497: 07,2336           57330                           XCH      MARKSTAT                              #  INDICATE MORE MARKS WANTED
010022,000498: 07,2337           77671                           MASK     PRIO34                                #  INDICATE MORE MARKS WANTED
010023,000499: 07,2340           10000                           CCS      A                                     
010024,000500: 07,2341           05333                           TC       RESUME                                
010025,000501: 07,2342           37667                           CAF      PRIO32                                
010026,000502: 07,2343           05134                           TC       NOVAC                                 
010027,000503: 07,2344     1330                                  EBANK=   MARKSTAT                              
010028,000504: 07,2344           02347 16062                     2CADR    MKVB51                                
010029,000505: 
010030,000506: 07,2346           05333                           TC       RESUME                                
010031,000507: 

Page 232

010033,000509:                                                                                                  #  PROGRAM DESCRIPTION MKVB51 AND MKVB50
010034,000510: 
010035,000511:                                                                                                  #  AUTHOR-BARNERT DATE-2-15-67 MOD-0
010036,000512:                                                                                                  #  PURPOSE  FLASH V51N70,V51N43, OR V51 TO REQUEST MARKING,
010037,000513:                                                                                                  #           AND V50N25 R1=16 TO REQUEST TERMINATE MARKING
010038,000514: 
010039,000515:                                                                                                  #  CALLING SEQUENCE   AS JOB WITHIN SXTMARK
010040,000516: 
010041,000517:                                                                                                  #  EXIT TO ENDMARK UPON RECEIPT OF V33, V34 CAUSES GOTOPOOH, ENTER
010042,000518:                                                                                                  #           RECYCLES THE DISPLAY
010043,000519: 
010044,000520:                                                                                                  #  NOTE- SXTMARK AUTOMATICALLY CHANGES FROM CALLING MKVB51 TO MKVB50 WHEN
010045,000521:                                                                                                  #           SUFFICIENT MARKS HAVE BEEN MADE, AND THE REVERSE WHEN A MARK
010046,000522:                                                                                                  #           REJECT REDUCES THE NUMBER MADE BELOW THAT REQUIRED
010047,000523: 
010048,000524:                                                                                                  #  SUBROUTINES CALLED- BANKCALL, GOMARK2, GOODEND, ENDMARK, WAITLIST
010049,000525: 
010050,000526:                                                                                                  #  ALARM OR ABORT MODES - NONE
010051,000527: 
010052,000528:                                                                                                  #  ERASABLE USED-VERBREG,MARKSTAT,QPRET,DSPTEM1
010053,000529: 
010054,000530:                                                                                                  #  OUTPUT MARKSTAT = VAC ADDRESS
010055,000531: 
010056,000532:                                                                                                  #  QPRET = NO. MARKS
010057,000533: 
010058,000534: 07,2347           04662        MKVB51             TC       BANKCALL                              #  CLEAR DISPLAY FOR MARK VERB
010059,000535: 07,2350           20560                           CADR     KLEENEX                               
010060,000536: 07,2351           32427                           CAF      VB51                                  #  DISPLAY MARK VB51
010061,000537: 07,2352           04662                           TC       BANKCALL                              
010062,000538: 07,2353           20572                           CADR     GOMARK4                               
010063,000539: 07,2354           12357                           TCF      TERMSXT                               #  VB34-TERMINATE
010064,000540: 07,2355           12370                           TCF      ENTANSWR                              #  V33-PROCEED-MARKING DONE
010065,000541: 07,2356           12416                           TCF      MKVB5X                                #  ENTER-RECYCLE TO INITIAL MARK DISPLAY
010066,000542: 
010067,000543: 07,2357           05536        TERMSXT            TC       CLEARMRK                              #  CLEAR MARK ACTIVITY.
010068,000544: 
010069,000545: 07,2360           05364                           TC       CHECKMM                               
010070,000546: 07,2361           00003                           MM       03         B-14                       
010071,000547: 07,2362           12364                           TCF      +2                                    
010072,000548: 07,2363           02366                           TC       TERMP03                               
010073,000549: 07,2364           04701                           TC       POSTJUMP                              
010074,000550: 07,2365           30205                           CADR     TERM52                                
010075,000551: 
010076,000552: 07,2366           05546        TERMP03            TC       UPFLAG                                
010077,000553: 07,2367           00032                           ADRES    TRM03FLG                              
010078,000554: 07,2370           35046        ENTANSWR           CAF      LOW9                                  #  PUT VAC ADR IN MARKSTAT AND NO. OF
010079,000555: 07,2371           71330                           MASK     MARKSTAT                              #  MARKS MADE IN QPRET BEFORE LEAVING
010080,000556: 07,2372           55330                           TS       MARKSTAT                              #  SXTMARK
010081,000557: 07,2373           40000                           COM                                            
010082,000558: 07,2374           51330                           INDEX    MARKSTAT                              
010083,000559: 07,2375           60052                           AD       QPRET                                 

Page 233

010085,000561: 07,2376           00006                           EXTEND                                         
010086,000562: 07,2377           62403                           BZMF     JAMIT                                 #  NO MARKS MADE, SHOW IT IN QPRET, R53
010087,000563: 07,2400           00006                           EXTEND                                         #        WILL PICK IT UP AND RECYCLE
010088,000564: 07,2401           75004                           MP       BIT12                                 #  THIS PUTS NUMBER MARKS-1 IN A
010089,000565: 07,2402           65017                           AD       ONE                                   
010090,000566: 07,2403           51330        JAMIT              INDEX    MARKSTAT                              #  STORE NO OF MARKS MADE
010091,000567: 07,2404           54052                           TS       QPRET                                 
010092,000568: 07,2405           00004                           INHINT                                         #  SERVICE OPTSTALL INTERFACE WITH
010093,000569: 07,2406           35022                           CAF      FIVE                                  
010094,000570: 07,2407           05245                           TC       WAITLIST                              
010095,000571: 07,2410     1330                                  EBANK=   MARKSTAT                              
010096,000572: 07,2410           02413 16062                     2CADR    ENDMARKS                              
010097,000573: 
010098,000574: 07,2412           05534                           TC       ENDMARK                               #  KNOCKS DOWN MARKING FLAG + DOES ENDOFJOB
010099,000575: 
010100,000576: 07,2413           35017        ENDMARKS           CAF      ONE                                   
010101,000577: 07,2414           04740                           TC       IBNKCALL                              
010102,000578: 07,2415           17550                           CADR     GOODEND                               
010103,000579: 07,2416           37671        MKVB5X             CAF      PRIO34                                
010104,000580: 07,2417           71330                           MASK     MARKSTAT                              #  RE-DISPLAY VB51 IF MORE MARKS WANTED
010105,000581: 07,2420           10000                           CCS      A                                     #  AND VB50 IF ALL IN
010106,000582: 07,2421           12347                           TCF      MKVB51                                
010107,000583: 07,2422           34333        MKVB50             CAF      R1D1                                  #  OCT 16
010108,000584: 07,2423           55045                           TS       DSPTEM1                               
010109,000585: 07,2424           32426                           CAF      V50N25                                
010110,000586: 07,2425           12352                           TCF      MKVB51     +3                         
010111,000587: 
010112,000588: 07,2426           14431        V50N25             VN       5025                                  
010113,000589: 07,2427           14600        VB51               VN       5100                                  
010114,000590: 07,2430     4362               OCT37              =        LOW5                                  
010115,000591: 
010116,000592:                                                                                                  #  PROGRAM NAME - MARKIT                         DATE - 19 SEPT 1967
010117,000593: 
010118,000594:                                                                                                  #  CALLING SEQUENCE
010119,000595:                                                                                                  #        FROM MARKRUPT IF CHAN 16 BIT 6 = 1
010120,000596: 
010121,000597:                                                                                                  #  EXIT
010122,000598:                                                                                                  #        RESUME
010123,000599: 
010124,000600:                                                                                                  #  INPUT
010125,000601:                                                                                                  #        CDUCHKWD.  ALSO ALL INITIALIZATION FOR MARKCONT
010126,000602: 
010127,000603:                                                                                                  #  OUTPUT
010128,000604:                                                                                                  #        MKT2T1,MKCDUX,MKCDUY,MKCDUZ,MKCDUS,MKCDUT
010129,000605: 
010130,000606:                                                                                                  #  ALARM EXIT
010131,000607:                                                                                                  #        NONE
010132,000608: 
010133,000609: 07,2430           11341        MARKIT             CCS      CDUCHKWD                              
010134,000610: 07,2431           12434                           TCF      +3                                    #  DELAY OF CDUCHKWD CS IF PNZ

Page 234

010136,000612: 07,2432           12434                           TCF      +2                                    
010137,000613: 07,2433           35021                           CAF      ZERO                                  
010138,000614: 07,2434           65017                           AD       ONE                                   #  10 MS IF NO CHECK
010139,000615: 07,2435           05245                           TC       WAITLIST                              
010140,000616: 07,2436  E7,1725                                  EBANK=   MRKBUF1                               
010141,000617: 07,2436           02203 20067                     2CADR    MARKDIF                               
010142,000618: 
010143,000619: 07,2440           15333                           TCF      RESUME                                
010144,000620: 
010145,000621: 10,2000                                           SETLOC   SXTMARK1                              
010146,000622: 10,2000                                           BANK                                           
010147,000623: 
010148,000624: 10,2203                                           COUNT    20/SXTMK                              
010149,000625: 
010150,000626:                                                                                                  #  PROGRAM NAME - MARKDIF                        DATE- 19 SEPT 1967
010151,000627: 
010152,000628:                                                                                                  #  CALLING SEQUENCE
010153,000629:                                                                                                  #        WAITLIST FROM MARKIT
010154,000630: 
010155,000631:                                                                                                  #  EXIT
010156,000632:                                                                                                  #        TASKOVER OT IBNKCALL TO MARKCONT
010157,000633: 
010158,000634:                                                                                                  #  INPUT
010159,000635:                                                                                                  #        OUTPUT FROM MARKIT, INPUT TO MARKCONT, CDUCHKWD
010160,000636: 
010161,000637:                                                                                                  #  OUTPUT
010162,000638:                                                                                                  #        RUPTSTOR - RUPTSTOR+3, RUPTREG3, RUPTSTOR+5 - RUPTSTOR+6
010163,000639: 
010164,000640:                                                                                                  #  ALARM EXIT
010165,000641:                                                                                                  #        ALARM AND TASKOVER
010166,000642: 
010167,000643: 10,2203           31341        MARKDIF            CA       CDUCHKWD                              #  IF DELAY CHECK IS ZERO OR NEG, ACP MARK
010168,000644: 10,2204           00006                           EXTEND                                         
010169,000645: 10,2205           62216                           BZMF     MKACPT                                
010170,000646: 10,2206           45017                           CS       BIT1                                  
010171,000647: 10,2207           54354                           TS       MKNDX                                 #  SET INDEX -1
010172,000648: 10,2210           30363                           CA       MKCDUX                                
010173,000649: 10,2211           02220                           TC       DIFCHK                                #  SEE IF VEHICLE RATE TO MUCH AT MARK
010174,000650: 10,2212           30357                           CA       MKCDUY                                
010175,000651: 10,2213           02220                           TC       DIFCHK                                
010176,000652: 10,2214           30361                           CA       MKCDUZ                                
010177,000653: 10,2215           02220                           TC       DIFCHK                                
010178,000654: 
010179,000655: 10,2216           04740        MKACPT             TC       IBNKCALL                              
010180,000656: 10,2217           16153                           CADR     MARKCONT                              #  MARK DATA OK, WHAT DO WE DO WITH IT
010181,000657: 
010182,000658: 10,2220           24354        DIFCHK             INCR     MKNDX                                 #  INCREMENT INDEX
010183,000659: 
010184,000660: 10,2221           00006                           EXTEND                                         
010185,000661: 10,2222           50354                           INDEX    MKNDX                                 

Page 235

010187,000663: 10,2223           20032                           MSU      CDUX                                  #  GET MARK(ICDU) - CURRENT(ICDU)
010188,000664: 10,2224           10000                           CCS      A                                     
010189,000665: 10,2225           12231                           TCF      +4                                    
010190,000666: 10,2226           00002                           TC       Q                                     
010191,000667: 10,2227           12231                           TCF      +2                                    
010192,000668: 10,2230           00002                           TC       Q                                     
010193,000669: 10,2231           67715                           AD       NEG2                                  #  SEE IF DIFFERENCE GREATER THAN 3 BITS
010194,000670: 10,2232           00006                           EXTEND                                         
010195,000671: 10,2233           62230                           BZMF     -3                                    #  NOT GREATER
010196,000672: 
010197,000673: 10,2234           05650                           TC       ALARM                                 #  COUPLED WITH PROGRAM ALARM
010198,000674: 10,2235           00121                           OCT      00121                                 
010199,000675: 
010200,000676: 10,2236           15324                           TCF      TASKOVER                              #  DO NOT ACCEPT
010201,000677: 
010202,000678: 

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