Source Code

These source-code files are part of a reconstructed copy of Comanche 44, the initial release (though not the final mission release) of the Apollo 10 Command Module (CM) Apollo Guidance Computer (AGC) software. Subsequent releases were Comanche 45 and Comanche 45/2 (the flown release on Apollo 10). The reconstruction is believed to be exactly accurate, but in the absence of an actual Apollo-era listing of Comanche 44, some explanation of the reconstruction process is needed to insure confidence in that accuracy.

The starting point was the source code of Comanche 51 (separately previously reconstructed from an Apollo-era listing of Comanche 55, flown on Apollo 11). Comanche 51 source code was then modified by undoing changes known to have been made between revisions 44 and 51. The now-reconstructed Comanche 44 source code was verified by assembling it and checking that the assembled code had the expected known-correct memory-bank checksums. Note that page numbers in the reconstructed code match those on the Comanche 55 printout, although the source code would likely have different page numbers in a contemporary Comanche 44 listing.

Annotations that were not present in the contemporary source code have been added to the reconstructed code to justify each change relative to Comanche 51. Here's a guide to the Apollo documentation referenced in those annotations:
In most cases, only the titles (rather than the full texts) of PCRs are known. In addition to the explanatory annotations, there is also a step-by-step commentary about the reconstruction process.

Comments expected to have been present in the original source code are prefixed with a single '#' symbol, whereas comments added later are prefixed by "##" or "###". Report any errors noted by creating an issue report at the Virtual AGC Project's GitHub repository.

059717,000002:                                                                                                  ## Copyright:   Public domain.
059718,000003:                                                                                                  ## Filename:    AGC_BLOCK_TWO_SELF-CHECK.agc
059719,000004:                                                                                                  ## Purpose:     A section of Comanche revision 044.
059720,000005:                                                                                                  ##              It is part of the reconstructed source code for the
059721,000006:                                                                                                  ##              original release of the flight software for the Command
059722,000007:                                                                                                  ##              Module's (CM) Apollo Guidance Computer (AGC) for Apollo 10.
059723,000008:                                                                                                  ##              The code has been recreated from a copy of Comanche 055. It
059724,000009:                                                                                                  ##              has been adapted such that the resulting bugger words
059725,000010:                                                                                                  ##              exactly match those specified for Comanche 44 in NASA drawing
059726,000011:                                                                                                  ##              2021153D, which gives relatively high confidence that the
059727,000012:                                                                                                  ##              reconstruction is correct.
059728,000013:                                                                                                  ## Assembler:   yaYUL
059729,000014:                                                                                                  ## Contact:     Ron Burkey <info@sandroid.org>.
059730,000015:                                                                                                  ## Website:     www.ibiblio.org/apollo/index.html
059731,000016:                                                                                                  ## Mod history: 2020-12-03 MAS  Created from Comanche 51.
059732,000017: 

Page 1394

059734,000019:                                                                                                  #  PROGRAM DESCRIPTION                           DATE  20 DECEMBER 1967
059735,000020:                                                                                                  #  PROGRAM NAME - SELF-CHECK                     LOG SECTION AGC BLOCK TWO SELF-CHECK
059736,000021:                                                                                                  #  MOD NO - 1                                    ASSEMBLY SUBROUTINE UTILITYM REV 25
059737,000022:                                                                                                  #  MOD BY - GAUNTT
059738,000023: 
059739,000024:                                                                                                  #  FUNCTIONAL DESCRIPTION
059740,000025:                                                                                                  #        PROGRAM HAS TWO MAIN PARTS.  THE FIRST IS SELF-CHECK WHICH RUNS AS A ZERO PRIORITY JOB WITH NO CORE SET, AS
059741,000026:                                                                                                  #        PART OF THE BACK-UP IDLE LOOP.  THE SECOND IS SHOW-BANKSUM WHICH RUNS AS A REGULAR EXECUTIVE JOB WITH ITS OWN
059742,000027:                                                                                                  #        STARTING VERB.
059743,000028: 
059744,000029:                                                                                                  #        THE PURPOSE OF SELF-CHECK IS TO CHECK OUT VARIOUS PARTS OF THE COMPUTER AS OUTLINED BELOW IN THE OPTIONS.
059745,000030: 
059746,000031:                                                                                                  #        THE PURPOSE OF SHOW-BANKSUM IS TO DISPLAY THE SUM OF EACH BANK, ONE AT A TIME.
059747,000032: 
059748,000033:                                                                                                  #        IN ALL THERE ARE 7 POSSIBLE OPTIONS IN THIS BLOCK II VERSION OF SELF-CHECK.  MORE DETAIL DESCRIPTION MAY BE
059749,000034:                                                                                                  #        FOUND IN E-2065 BLOCK II AGC SELF-CHECK AND SHOW BANKSUM BY EDWIN D. SMALLY DECEMBER 1966, AND ADDENDA 2 AND 3.
059750,000035: 
059751,000036:                                                                                                  #        THE DIFFERENT OPTIONS ARE CONTROLLED BY PUTTING DIFFERENT NUMBERS IN THE SMODE REGISTER (NOUN 27).  BELOW IS
059752,000037:                                                                                                  #        A DESCRIPTION OF WHAT PARTS OF THE COMPUTER THAT ARE CHECKED BY THE OPTIONS, AND THE CORRESPONDING NUMBER, IN
059753,000038:                                                                                                  #        OCTAL, TO LOAD INTO SMODE.
059754,000039:                                                                                                  #                +-4             ERASABLE MEMORY
059755,000040:                                                                                                  #                +-5             FIXED MEMORY
059756,000041:                                                                                                  #                +-1,2,3,6,7,10  EVERYTHING IN OPTIONS 4 AND 5.
059757,000042:                                                                                                  #                -0              SAME AS +-10 UNTIL AN ERROR IS DETECTED.
059758,000043:                                                                                                  #                +0              NO CHECK, PUTS COMPUTER INTO THE BACKUP IDLE LOOP.
059759,000044: 
059760,000045:                                                                                                  #  WARNINGS
059761,000046:                                                                                                  #        USE OF E MEMORY RESERVED FOR SELF-CHECK (EVEN IN IDLE LOOP) AS TEMP STORAGE BY OTHER PROGRAMS IS DANGEROUS.
059762,000047:                                                                                                  #        SMODE SET GREATER THAN OCT 10 PUTS COMPUTER INTO BACKUP IDLE LOOP.
059763,000048: 
059764,000049:                                                                                                  #  CALLING SEQUENCE
059765,000050:                                                                                                  #        TO CALL SELF-CHECK KEY IN
059766,000051:                                                                                                  #                V 21 N 27 E     OPTION NUMBER E
059767,000052:                                                                                                  #        TO CALL SHOW-BANKSUM KEY IN
059768,000053:                                                                                                  #                V 91 E          DISPLAYS FIRST BANK
059769,000054:                                                                                                  #                V 33 E          PROCEED, DISPLAYS NEXT BANK
059770,000055: 
059771,000056:                                                                                                  #  EXIT MODES, NORMAL AND ALARM
059772,000057:                                                                                                  #        SELF-CHECK NORMALLY CONTINUES INDEFINITELY UNLESS THERE IS AN ERROR DETECTED.  IF SO + OPTION NUMBERS PUT
059773,000058:                                                                                                  #        COMPUTER INTO BACKUP IDLE LOOP, - OPTION NUMBERS RESTART THE OPTION.
059774,000059: 
059775,000060:                                                                                                  #        THE -0 OPTION PROCEEDS FROM THE LINE FOLLOWING THE LINE WHERE THE ERROR WAS DETECTED.
059776,000061: 
059777,000062:                                                                                                  #        SHOW-BANKSUM PROCEEDS UNTIL A TERMINATE IS KEYED IN (V 34 E).  THE COMPUTER IS PUT INTO THE BACKUP IDLE LOOP
059778,000063: 
059779,000064:                                                                                                  #  OUTPUT

Page 1395

059781,000066:                                                                                                  #        SELF-CHECK UPON DETECTING AN ERROR LOADS THE SELF-CHECK ALARM CONSTANT (01102) INTO THE FAILREG SET AND
059782,000067:                                                                                                  #        TURNS ON THE ALARM LIGHT.  THE OPERATOR MAY THEN DISPLAY THE THREE FAILREGS BY KEYING IN V 05 N 09 E.  FOR FURTHER
059783,000068:                                                                                                  #        INFORMATION HE MAY KEY IN V 05 N 08 E, THE DSKY DISPLAY IN R1 WILL BE ADDRESS+1 OF WHERE THE ERROR WAS DETECTED,
059784,000069:                                                                                                  #        IN R2 THE BBCON OF SELF-CHECK, AND IN R3 THE TOTAL NUMBER OF ERRORS DETECTED BY SELF-CHECK SINCE THE LAST MAN
059785,000070:                                                                                                  #        INITIATED FRESH START (SLAP1).
059786,000071: 
059787,000072:                                                                                                  #        SHOW-BANKSUM STARTING WITH BANK 0 DISPLAYS IN R1 THE BANK SUM (A +-NUMBER EQUAL TO THE BANK NUMBER), IN R2
059788,000073:                                                                                                  #        THE BANK NUMBER, AND IN R3 THE BUGGER WORD.
059789,000074: 
059790,000075:                                                                                                  #  ERASABLE INITIALIZATION REQUIRED
059791,000076:                                                                                                  #        ACCOMPLISHED BY FRESH START
059792,000077:                                                                                                  #                SMODE SET TO +0
059793,000078: 
059794,000079:                                                                                                  #  DEBRIS
059795,000080:                                                                                                  #        ALL EXITS FROM THE CHECK OF ERASABLE (ERASCHK) RESTORE ORIGINAL CONTENTS TO REGISTERS UNDER CHECK.
059796,000081:                                                                                                  #        EXCEPTION IS A RESTART.  RESTART THAT OCCURS DURING ERASCHK RESTORES ERASABLE, UNLESS THERE IS EVIDENCE TO DOUBT
059797,000082:                                                                                                  #        E MEMORY, IN WHICH CASE PROGRAM THEN DOES A FRESH START (DOFSTART).
059798,000083: 
059799,000084: 25,3774                                           BANK     25                                    
059800,000085: 43,2000                                           SETLOC   SELFCHEC                              
059801,000086: 43,2000                                           BANK                                           
059802,000087: 
059803,000088: 43,3234                                           COUNT    43/SELF                               
059804,000089: 
059805,000090: 43,3234     5017               SBIT1              EQUALS   BIT1                                  
059806,000091: 43,3234     5016               SBIT2              EQUALS   BIT2                                  
059807,000092: 43,3234     5015               SBIT3              EQUALS   BIT3                                  
059808,000093: 43,3234     5014               SBIT4              EQUALS   BIT4                                  
059809,000094: 43,3234     5013               SBIT5              EQUALS   BIT5                                  
059810,000095: 43,3234     5012               SBIT6              EQUALS   BIT6                                  
059811,000096: 43,3234     5011               SBIT7              EQUALS   BIT7                                  
059812,000097: 43,3234     5010               SBIT8              EQUALS   BIT8                                  
059813,000098: 43,3234     5007               SBIT9              EQUALS   BIT9                                  
059814,000099: 43,3234     5006               SBIT10             EQUALS   BIT10                                 
059815,000100: 43,3234     5005               SBIT11             EQUALS   BIT11                                 
059816,000101: 43,3234     5004               SBIT12             EQUALS   BIT12                                 
059817,000102: 43,3234     5003               SBIT13             EQUALS   BIT13                                 
059818,000103: 43,3234     5002               SBIT14             EQUALS   BIT14                                 
059819,000104: 43,3234     5001               SBIT15             EQUALS   BIT15                                 
059820,000105: 
059821,000106: 43,3234     5021               S+ZERO             EQUALS   ZERO                                  
059822,000107: 43,3234     5017               S+1                EQUALS   BIT1                                  
059823,000108: 43,3234     5016               S+2                EQUALS   BIT2                                  
059824,000109: 43,3234     6214               S+3                EQUALS   THREE                                 
059825,000110: 43,3234     5015               S+4                EQUALS   FOUR                                  
059826,000111: 43,3234     5022               S+5                EQUALS   FIVE                                  

Page 1396

059828,000113: 43,3234     6211               S+6                EQUALS   SIX                                   
059829,000114: 43,3234     5023               S+7                EQUALS   SEVEN                                 
059830,000115: 43,3234     4373               S8BITS             EQUALS   LOW8                                  #  00377
059831,000116: 43,3234     5033               CNTRCON            =        OCT50                                 #  USED IN CNTRCHK
059832,000117: 43,3234           00061        ERASCON1           OCTAL    00061                                 #  USED IN ERASCHK
059833,000118: 43,3235           01373        ERASCON2           OCTAL    01373                                 #  USED IN ERASCHK
059834,000119: 43,3236     5051               ERASCON6           =        OCT1400                               #  USED IN ERASCHK
059835,000120: 43,3236           01461        ERASCON3           OCTAL    01461                                 #  USED IN ERASCHK
059836,000121: 43,3237           01773        ERASCON4           OCTAL    01773                                 #  USED IN ERASCHK
059837,000122: 43,3240     5054               S10BITS            EQUALS   LOW10                                 #  01777, USED IN ERASCHK
059838,000123: 43,3240     5062               SBNK03             EQUALS   PRIO6                                 #  06000, USED IN ROPECHK
059839,000124: 43,3240     4364               -MAXADRS           =        HI5                                   #  FOR ROPECHK
059840,000125: 43,3240           00060        SIXTY              OCTAL    00060                                 
059841,000126: 43,3241           60017        SUPRCON            OCTAL    60017                                 #  USED IN ROPECHK
059842,000127: 43,3242           17777        S13BITS            OCTAL    17777                                 
059843,000128: 43,3243           25252        CONC+S1            OCTAL    25252                                 #  USED IN CYCLSHFT
059844,000129: 43,3244           52400        CONC+S2            OCTAL    52400                                 #  USED IN CYCLSHFT
059845,000130: 43,3245           76777        ERASCON5           OCTAL    76777                                 
059846,000131: 43,3246     5731               S-7                =        OCT77770                              
059847,000132: 43,3246     6061               S-4                EQUALS   NEG4                                  
059848,000133: 43,3246     7714               S-3                EQUALS   NEG3                                  
059849,000134: 43,3246     7715               S-2                EQUALS   NEG2                                  
059850,000135: 43,3246     7716               S-1                EQUALS   NEGONE                                
059851,000136: 43,3246     5020               S-ZERO             EQUALS   NEG0                                  
059852,000137: 
059853,000138: 43,3246  E3,1400                                  EBANK=   LST1                                  
059854,000139: 43,3246           01371        ADRS1              ADRES    SKEEP1                                
059855,000140: 43,3247           03340        SELFADRS           ADRES    SELFCHK                               #  SELFCHK RETURN ADDRESS.  SHOULD BE PUT
059856,000141:                                                                                                  #  IN SELFRET WHEN GOING FROM SELFCHK TO
059857,000142:                                                                                                  #  SHOWSUM AND PUT IN SKEEP1 WHEN GOING
059858,000143:                                                                                                  #  FROM SHOWSUM TO SELF-CHECK.
059859,000144: 
059860,000145: 43,3250           31360        PRERRORS           CA       ERESTORE                              #  IS IT NECESSARY TO RESTORE ERASABLE
059861,000146: 43,3251           00006                           EXTEND                                         
059862,000147: 43,3252           13261                           BZF      ERRORS                                #  NO
059863,000148: 43,3253           00006                           EXTEND                                         
059864,000149: 43,3254           31376                           DCA      SKEEP5                                
059865,000150: 43,3255           51377                           INDEX    SKEEP7                                
059866,000151: 43,3256           52001                           DXCH     0000                                  #  RESTORE THE TWO ERASABLE REGISTERS
059867,000152: 43,3257           35021                           CA       S+ZERO                                
059868,000153: 43,3260           55360                           TS       ERESTORE                              
059869,000154: 43,3261           00004        ERRORS             INHINT                                         
059870,000155: 43,3262           30002                           CA       Q                                     
059871,000156: 43,3263           55357                           TS       SFAIL                                 #  SAVE Q FOR FAILURE LOCATION
059872,000157: 43,3264           55363                           TS       ALMCADR                               #  FOR DISPLAY WITH BBANK AND ERCOUNT
059873,000158: 43,3265           25365                           INCR     ERCOUNT                               #  KEEP TRACK OF NUMBER OF MALFUNCTIONS.
059874,000159: 43,3266           05652        TCALARM2           TC       ALARM2                                
059875,000160: 43,3267           01102                           OCT      01102                                 #  SELF-CHECK MALFUNCTION INDICATOR
059876,000161: 43,3270           11362                           CCS      SMODE                                 
059877,000162: 43,3271           35021        SIDLOOP            CA       S+ZERO                                

Page 1397

059879,000164: 43,3272           55362                           TS       SMODE                                 
059880,000165: 43,3273           03340                           TC       SELFCHK                               #  GO TO IDLE LOOP
059881,000166: 43,3274           01357                           TC       SFAIL                                 #  CONTINUE WITH SELF-CHECK
059882,000167: 
059883,000168: 43,3275           10000        -1CHK              CCS      A                                     
059884,000169: 43,3276           13250                           TCF      PRERRORS                              
059885,000170: 43,3277           13250                           TCF      PRERRORS                              
059886,000171: 43,3300           10000                           CCS      A                                     
059887,000172: 43,3301           13250                           TCF      PRERRORS                              
059888,000173: 43,3302           00002                           TC       Q                                     
059889,000174: 
059890,000175: 43,3303           00006        SMODECHK           EXTEND                                         
059891,000176: 43,3304           23371                           QXCH     SKEEP1                                
059892,000177: 43,3305           03334                           TC       CHECKNJ                               #  CHECK FOR NEW JOB
059893,000178: 43,3306           11362                           CCS      SMODE                                 
059894,000179: 43,3307           03314                           TC       SOPTIONS                              
059895,000180: 43,3310           03305                           TC       SMODECHK   +2                         #  TO BACKUP IDLE LOOP
059896,000181: 43,3311           03314                           TC       SOPTIONS                              
059897,000182: 43,3312           25366                           INCR     SCOUNT                                
059898,000183: 43,3313           01371                           TC       SKEEP1                                #  CONTINUE WITH SELF-CHECK
059899,000184: 
059900,000185: 43,3314           65731        SOPTIONS           AD       S-7                                   
059901,000186: 43,3315           00006                           EXTEND                                         
059902,000187: 43,3316           63320                           BZMF     +2                                    #  FOR OPTIONS BELOW NINE.
059903,000188: 43,3317           03271        BNKOPTN            TC       SIDLOOP                               #  ILLEGAL OPTION.  GO TO IDLE LOOP.
059904,000189: 43,3320           25366                           INCR     SCOUNT                                #  FOR OPTIONS BELOW NINE.
059905,000190: 43,3321           65023                           AD       S+7                                   
059906,000191: 
059907,000192: 43,3322           50000                           INDEX    A                                     
059908,000193: 43,3323           03324                           TC       SOPTION1                              
059909,000194: 43,3324           01371        SOPTION1           TC       SKEEP1                                #  WAS TC+TCF
059910,000195: 43,3325           01371        SOPTION2           TC       SKEEP1                                #  WAS IN:OUT1
059911,000196: 43,3326           01371        SOPTION3           TC       SKEEP1                                #  WAS COUNTCHK
059912,000197: 43,3327           03341        SOPTION4           TC       ERASCHK                               
059913,000198: 43,3330           03522        SOPTION5           TC       ROPECHK                               
059914,000199: 43,3331           01371        SOPTION6           TC       SKEEP1                                
059915,000200: 43,3332           01371        SOPTION7           TC       SKEEP1                                
059916,000201: 43,3333           01371        SOPTON10           TC       SKEEP1                                #  CONTINUE WITH SELF-CHECK
059917,000202: 
059918,000203: 43,3334           00006        CHECKNJ            EXTEND                                         
059919,000204: 43,3335           23361                           QXCH     SELFRET                               #  SAVE RETURN ADDRESS WHILE TESTING NEWJOB
059920,000205: 43,3336           04701                           TC       POSTJUMP                              #  TO SEE IF ANY JOBS HAVE BECOME ACTIVE.
059921,000206: 43,3337           03231                           CADR     ADVAN                                 
059922,000207: 
059923,000208: 43,3340           03303        SELFCHK            TC       SMODECHK                              #  ** CHARLEY, COME IN HERE
059924,000209: 
059925,000210:                                                                                                  #  SKEEP7 HOLDS LOWEST OF TWO ADDRESSES BEING CHECKED.
059926,000211:                                                                                                  #  SKEEP6 HOLDS B(X+1).
059927,000212:                                                                                                  #  SKEEP5 HOLDS B(X).
059928,000213:                                                                                                  #  SKEEP4 HOLDS C(EBANK) DURING ERASLOOP AND CHECKNJ.

Page 1398

059930,000215:                                                                                                  #  SKEEP3 HOLDS LAST ADDRESS BEING CHECKED (HIGHEST ADDRESS).
059931,000216:                                                                                                  #  SKEEP2 CONTROLS CHECKING OF NON-SWITCHABLE ERASABLE MEMORY WITH BANK NUMBERS IN EB.
059932,000217: 
059933,000218:                                                                                                  #  ERASCHK TAKES APPROXMATELY 7 SECONDS
059934,000219: 
059935,000220: 43,3341           35017        ERASCHK            CA       S+1                                   
059936,000221: 43,3342           55372                           TS       SKEEP2                                
059937,000222: 43,3343           35021        0EBANK             CA       S+ZERO                                
059938,000223: 43,3344           54003                           TS       EBANK                                 
059939,000224: 43,3345           33236                           CA       ERASCON3                              #  01461
059940,000225: 43,3346           55377                           TS       SKEEP7                                #  STARTING ADDRESS
059941,000226: 43,3347           35054                           CA       S10BITS                               #  01777
059942,000227: 43,3350           55373                           TS       SKEEP3                                #  LAST ADDRESS CHECKED
059943,000228: 43,3351           03371                           TC       ERASLOOP                              
059944,000229: 
059945,000230: 43,3352           35051        E134567B           CA       ERASCON6                              #  01400
059946,000231: 43,3353           55377                           TS       SKEEP7                                #  STARTING ADDRESS
059947,000232: 43,3354           35054                           CA       S10BITS                               #  01777
059948,000233: 43,3355           55373                           TS       SKEEP3                                #  LAST ADDRESS CHECKED
059949,000234: 43,3356           03371                           TC       ERASLOOP                              
059950,000235: 
059951,000236: 43,3357           35051        2EBANK             CA       ERASCON6                              #  01400
059952,000237: 43,3360           55377                           TS       SKEEP7                                #  STARTING ADDRESS
059953,000238: 43,3361           33237                           CA       ERASCON4                              #  01773
059954,000239: 43,3362           55373                           TS       SKEEP3                                #  LAST ADDRESS CHECKED
059955,000240: 43,3363           03371                           TC       ERASLOOP                              
059956,000241: 
059957,000242: 43,3364           55372        NOEBANK            TS       SKEEP2                                #  +0
059958,000243: 43,3365           33234                           CA       ERASCON1                              #  00061
059959,000244: 43,3366           55377                           TS       SKEEP7                                #  STARTING ADDRESS
059960,000245: 43,3367           33235                           CA       ERASCON2                              #  01373
059961,000246: 43,3370           55373                           TS       SKEEP3                                #  LAST ADDRESS CHECKED
059962,000247: 
059963,000248: 43,3371           00004        ERASLOOP           INHINT                                         
059964,000249: 43,3372           30003                           CA       EBANK                                 #  STORES C(EBANK)
059965,000250: 43,3373           55374                           TS       SKEEP4                                
059966,000251: 43,3374           00006                           EXTEND                                         
059967,000252: 43,3375           51377                           NDX      SKEEP7                                
059968,000253: 43,3376           30001                           DCA      0000                                  
059969,000254: 43,3377           53376                           DXCH     SKEEP5                                #  STORES C(X) AND C(X+1) IN SKEEP6 AND 5.
059970,000255: 43,3400           31377                           CA       SKEEP7                                
059971,000256: 43,3401           55360                           TS       ERESTORE                              #  IF RESTART, RESTORE C(X) AND C(X+1)
059972,000257: 43,3402           54001                           TS       L                                     
059973,000258: 43,3403           24001                           INCR     L                                     
059974,000259: 43,3404           50000                           NDX      A                                     
059975,000260: 43,3405           52001                           DXCH     0000                                  #  PUTS OWN ADDRESS IN X AND X +1
059976,000261: 43,3406           51377                           NDX      SKEEP7                                
059977,000262: 43,3407           40001                           CS       0001                                  #  CS X+1
059978,000263: 43,3410           51377                           NDX      SKEEP7                                
059979,000264: 43,3411           60000                           AD       0000                                  #  AD X
059980,000265: 43,3412           03275                           TC       -1CHK                                 
059981,000266: 43,3413           31360                           CA       ERESTORE                              #  HAS ERASABLE BEEN RESTORED

Page 1399

059983,000268: 43,3414           00006                           EXTEND                                         
059984,000269: 43,3415           13441                           BZF      ELOOPFIN                              #  YES, EXIT ERASLOOP.
059985,000270: 43,3416           00006                           EXTEND                                         
059986,000271: 43,3417           51377                           NDX      SKEEP7                                
059987,000272: 43,3420           40001                           DCS      0000                                  #  COMPLEMENT OF ADDRESS OF X AND X+1
059988,000273: 43,3421           51377                           NDX      SKEEP7                                
059989,000274: 43,3422           52001                           DXCH     0000                                  #  PUT COMPLEMENT OF ADDRESS OF X AND X+1
059990,000275: 43,3423           51377                           NDX      SKEEP7                                
059991,000276: 43,3424           40000                           CS       0000                                  #  CS X
059992,000277: 43,3425           51377                           NDX      SKEEP7                                
059993,000278: 43,3426           60001                           AD       0001                                  #  AD X+1
059994,000279: 43,3427           03275                           TC       -1CHK                                 
059995,000280: 43,3430           31360                           CA       ERESTORE                              #  HAS ERASABLE BEEN RESTORED
059996,000281: 43,3431           00006                           EXTEND                                         
059997,000282: 43,3432           13441                           BZF      ELOOPFIN                              #  YES, EXIT ERASLOOP.
059998,000283: 43,3433           00006                           EXTEND                                         
059999,000284: 43,3434           31376                           DCA      SKEEP5                                
060000,000285: 43,3435           51377                           NDX      SKEEP7                                
060001,000286: 43,3436           52001                           DXCH     0000                                  #  PUT B(X) AND B(X+1) BACK INTO X AND X+1
060002,000287: 43,3437           35021                           CA       S+ZERO                                
060003,000288: 43,3440           55360                           TS       ERESTORE                              #  IF RESTART, DO NOT RESTORE C(X), C(X+1)
060004,000289: 43,3441           00003        ELOOPFIN           RELINT                                         
060005,000290: 43,3442           03334                           TC       CHECKNJ                               #  CHECK FOR NEW JOB
060006,000291: 43,3443           31374                           CA       SKEEP4                                #  REPLACES B(EBANK)
060007,000292: 43,3444           54003                           TS       EBANK                                 
060008,000293: 43,3445           25377                           INCR     SKEEP7                                
060009,000294: 43,3446           41377                           CS       SKEEP7                                
060010,000295: 43,3447           61373                           AD       SKEEP3                                
060011,000296: 43,3450           00006                           EXTEND                                         
060012,000297: 43,3451           13453                           BZF      +2                                    
060013,000298: 43,3452           03371                           TC       ERASLOOP                              #  GO TO NEXT ADDRESS IN SAME BANK
060014,000299: 43,3453           11372                           CCS      SKEEP2                                
060015,000300: 43,3454           03364                           TC       NOEBANK                               
060016,000301: 43,3455           25372                           INCR     SKEEP2                                #  PUT +1 IN SKEEP2.
060017,000302: 43,3456           30003                           CA       EBANK                                 
060018,000303: 43,3457           65007                           AD       SBIT9                                 
060019,000304: 43,3460           54003                           TS       EBANK                                 
060020,000305: 43,3461           63245                           AD       ERASCON5                              #  76777, CHECK FOR BANK E2
060021,000306: 43,3462           00006                           EXTEND                                         
060022,000307: 43,3463           13357                           BZF      2EBANK                                
060023,000308: 43,3464           10003                           CCS      EBANK                                 
060024,000309: 43,3465           03352                           TC       E134567B                              #  GO TO EBANKS 1,3,4,5,6, AND 7
060025,000310: 43,3466           35051                           CA       ERASCON6                              #  END OF ERASCHK
060026,000311: 43,3467           54003                           TS       EBANK                                 
060027,000312: 
060028,000313:                                                                                                  #  CNTRCHK PERFORMS A CS OF ALL REGISTERS FROM OCT. 60 THROUGH OCT. 10.
060029,000314:                                                                                                  #  INCLUDED ARE ALL COUNTERS, T6-1, CYCLE AND SHIFT, AND ALL RUPT REGISTERS
060030,000315: 
060031,000316: 43,3470           35033        CNTRCHK            CA       CNTRCON                               #  00050
060032,000317: 43,3471           55372        CNTRLOOP           TS       SKEEP2                                
060033,000318: 43,3472           65014                           AD       SBIT4                                 #  +10 OCTAL
060034,000319: 43,3473           50000                           INDEX    A                                     

Page 1400

060036,000321: 43,3474           40000                           CS       0000                                  
060037,000322: 43,3475           11372                           CCS      SKEEP2                                
060038,000323: 43,3476           03471                           TC       CNTRLOOP                              
060039,000324: 
060040,000325:                                                                                                  #  CYCLSHFT CHECKS THE CYCLE AND SHIFT REGISTERS
060041,000326: 
060042,000327: 43,3477           33243        CYCLSHFT           CA       CONC+S1                               #  25252
060043,000328: 43,3500           54020                           TS       CYR                                   #  C(CYR) = 12525
060044,000329: 43,3501           54022                           TS       CYL                                   #  C(CYL) = 52524
060045,000330: 43,3502           54021                           TS       SR                                    #  C(SR) = 12525
060046,000331: 43,3503           54023                           TS       EDOP                                  #  C(EDOP) = 00125
060047,000332: 43,3504           60020                           AD       CYR                                   #  37777         C(CYR) = 45252
060048,000333: 43,3505           60022                           AD       CYL                                   #  00-12524      C(CYL) = 25251
060049,000334: 43,3506           60021                           AD       SR                                    #  00-25251      C(SR) = 05252
060050,000335: 43,3507           60023                           AD       EDOP                                  #  00-25376      C(EDOP) = +0
060051,000336: 43,3510           63244                           AD       CONC+S2                               #  C(CONC+S2) = 52400
060052,000337: 43,3511           03275                           TC       -1CHK                                 
060053,000338: 43,3512           60020                           AD       CYR                                   #  45252
060054,000339: 43,3513           60022                           AD       CYL                                   #  72523
060055,000340: 43,3514           60021                           AD       SR                                    #  77775
060056,000341: 43,3515           60023                           AD       EDOP                                  #  77775
060057,000342: 43,3516           65017                           AD       S+1                                   #  77776
060058,000343: 43,3517           03275                           TC       -1CHK                                 
060059,000344: 
060060,000345: 43,3520           25367                           INCR     SCOUNT     +1                         
060061,000346: 43,3521           03303                           TC       SMODECHK                              
060062,000347: 
060063,000348:                                                                                                  #  SKEEP1 HOLDS SUM
060064,000349:                                                                                                  #  SKEEP2 HOLDS PRESENT CONTENTS OF ADDRESS IN ROPECHK AND SHOWSUM ROUTINES
060065,000350:                                                                                                  #  SKEEP2 HOLDS BANK NUMBER IN LOW ORDER BITS DURING SHOWSUM DISPLAY
060066,000351:                                                                                                  #  SKEEP3 HOLDS PRESENT ADDRESS (00000 TO 01777 IN COMMON FIXED BANKS)
060067,000352:                                                                                                  #                               (04000 TO 07777 IN FXFX BANKS)
060068,000353:                                                                                                  #  SKEEP3 HOLDS BUGGER WORD DURING SHOWSUM DISPLAY
060069,000354:                                                                                                  #  SKEEP4 HOLDS BANK NUMBER AND SUPER BANK NUMBER
060070,000355:                                                                                                  #  SKEEP5 COUNTS 2 SUCCESSIVE TC SELF WORDS
060071,000356:                                                                                                  #  SKEEP6 CONTROLS ROPECHK OR SHOWSUM OPTION
060072,000357:                                                                                                  #  SKEEP7 CONTROLS WHEN ROUNTINE IS IN COMMON FIXED OR FIXED FIXED BANKS
060073,000358: 
060074,000359: 43,3522           35020        ROPECHK            CA       S-ZERO                                #  *
060075,000360: 43,3523           55376                           TS       SKEEP6                                #  * -0 FOR ROPECHK.
060076,000361: 43,3524           35021        STSHOSUM           CA       S+ZERO                                #  * SHOULD BE ROPECHK
060077,000362: 
060078,000363: 43,3525           55374                           TS       SKEEP4                                #  BANK NUMBER
060079,000364: 43,3526           35017                           CA       S+1                                   
060080,000365: 43,3527           55377        COMMFX             TS       SKEEP7                                
060081,000366: 43,3530           35021                           CA       S+ZERO                                
060082,000367: 43,3531           55371                           TS       SKEEP1                                
060083,000368: 43,3532           55373                           TS       SKEEP3                                
060084,000369: 43,3533           35017                           CA       S+1                                   
060085,000370: 43,3534           55375                           TS       SKEEP5                                #  COUNTS DOWN 2 TC SELF WORDS
060086,000371: 43,3535           31374        COMADRS            CA       SKEEP4                                
060087,000372: 43,3536           54001                           TS       L                                     #  TO SET SUPER BANK

Page 1401

060089,000374: 43,3537           74364                           MASK     HI5                                   
060090,000375: 43,3540           61373                           AD       SKEEP3                                
060091,000376: 43,3541           04715                           TC       SUPDACAL                              #  SUPER DATA CALL
060092,000377: 43,3542           03565                           TC       ADSUM                                 
060093,000378: 43,3543           65005                           AD       SBIT11                                #  02000
060094,000379: 43,3544           03576                           TC       ADRSCHK                               
060095,000380: 
060096,000381: 43,3545           40000        FXFX               CS       A                                     
060097,000382: 43,3546           55377                           TS       SKEEP7                                
060098,000383: 43,3547           00006                           EXTEND                                         
060099,000384: 43,3550           13553                           BZF      +3                                    
060100,000385: 43,3551           35004                           CA       SBIT12                                #  04000, STARTING ADDRESS OF BANK 02
060101,000386: 43,3552           03554                           TC       +2                                    
060102,000387: 43,3553           35062                           CA       SBNK03                                #  06000, STARTING ADDRESS OF BANK 03
060103,000388: 43,3554           55373                           TS       SKEEP3                                
060104,000389: 43,3555           35021                           CA       S+ZERO                                
060105,000390: 43,3556           55371                           TS       SKEEP1                                
060106,000391: 43,3557           35017                           CA       S+1                                   
060107,000392: 43,3560           55375                           TS       SKEEP5                                #  COUNTS DOWN 2 TC SELF WORDS
060108,000393: 43,3561           51373        FXADRS             INDEX    SKEEP3                                
060109,000394: 43,3562           30000                           CA       0000                                  
060110,000395: 43,3563           03565                           TC       ADSUM                                 
060111,000396: 43,3564           03576                           TC       ADRSCHK                               
060112,000397: 
060113,000398: 43,3565           55372        ADSUM              TS       SKEEP2                                
060114,000399: 43,3566           61371                           AD       SKEEP1                                
060115,000400: 43,3567           55371                           TS       SKEEP1                                
060116,000401: 43,3570           35021                           CAF      S+ZERO                                
060117,000402: 43,3571           61371                           AD       SKEEP1                                
060118,000403: 43,3572           55371                           TS       SKEEP1                                
060119,000404: 43,3573           41372                           CS       SKEEP2                                
060120,000405: 43,3574           61373                           AD       SKEEP3                                
060121,000406: 43,3575           00002                           TC       Q                                     
060122,000407: 
060123,000408: 43,3576           22000        ADRSCHK            LXCH     A                                     
060124,000409: 43,3577           31373                           CA       SKEEP3                                
060125,000410: 43,3600           75054                           MASK     LOW10                                 #  RELATIVE ADDRESS
060126,000411: 43,3601           64364                           AD       -MAXADRS                              #  SUBTRACT MAX RELATIVE ADDRESS = 1777.
060127,000412: 43,3602           00006                           EXTEND                                         
060128,000413: 43,3603           13672                           BZF      SOPTION                               #  CHECKSUM FINISHED IF LAST ADDRESS.
060129,000414: 43,3604           11375                           CCS      SKEEP5                                #  IS CHECKSUM FINISHED
060130,000415: 43,3605           03610                           TC       +3                                    #  NO
060131,000416: 43,3606           03610                           TC       +2                                    #  NO
060132,000417: 43,3607           03672                           TC       SOPTION                               #  GO TO ROPECHK SHOWSUM OPTION
060133,000418: 43,3610           10001                           CCS      L                                     #  -0 MEANS A TC SELF WORD.
060134,000419: 43,3611           03620                           TC       CONTINU                               
060135,000420: 43,3612           03620                           TC       CONTINU                               
060136,000421: 43,3613           03620                           TC       CONTINU                               
060137,000422: 43,3614           11375                           CCS      SKEEP5                                
060138,000423: 43,3615           03621                           TC       CONTINU    +1                         

Page 1402

060140,000425: 43,3616           37716                           CA       S-1                                   
060141,000426: 43,3617           03621                           TC       CONTINU    +1                         #  AD IN THE BUGGER WORD
060142,000427: 43,3620           35017        CONTINU            CA       S+1                                   #  MAKE SURE TWO CONSECUTIVE TC SELF WORDS
060143,000428: 43,3621           55375                           TS       SKEEP5                                
060144,000429: 43,3622           11376                           CCS      SKEEP6                                #  *
060145,000430: 43,3623           10067                           CCS      NEWJOB                                #  * +1, SHOWSUM
060146,000431: 43,3624           05164                           TC       CHANG1                                #  *
060147,000432: 43,3625           03627                           TC       +2                                    #  *
060148,000433: 43,3626           03334                           TC       CHECKNJ                               #  -0 IN SKEEP6 FOR ROPECHK
060149,000434: 
060150,000435: 43,3627           25373        ADRS+1             INCR     SKEEP3                                
060151,000436: 43,3630           11377                           CCS      SKEEP7                                
060152,000437: 43,3631           03535                           TC       COMADRS                               
060153,000438: 43,3632           03535                           TC       COMADRS                               
060154,000439: 43,3633           03561                           TC       FXADRS                                
060155,000440: 43,3634           03561                           TC       FXADRS                                
060156,000441: 
060157,000442: 43,3635           41374        NXTBNK             CS       SKEEP4                                
060158,000443: 43,3636           63725                           AD       LSTBNKCH                              #  LAST BANK TO BE CHECKED
060159,000444: 43,3637           00006                           EXTEND                                         
060160,000445: 43,3640           13011                           BZF      ENDSUMS                               #  END OF SUMMING OF BANKS.
060161,000446: 43,3641           31374                           CA       SKEEP4                                
060162,000447: 43,3642           65005                           AD       SBIT11                                
060163,000448: 43,3643           55374                           TS       SKEEP4                                #  37 TO 40 INCRMTS SKEEP4 BY END RND CARRY
060164,000449: 43,3644           03650                           TC       CHKSUPR                               
060165,000450: 43,3645           35001        17TO20             CA       SBIT15                                
060166,000451: 43,3646           27374                           ADS      SKEEP4                                #  SET FOR BANK 20
060167,000452: 43,3647           03664                           TC       GONXTBNK                              
060168,000453: 43,3650           74364        CHKSUPR            MASK     HI5                                   
060169,000454: 43,3651           00006                           EXTEND                                         
060170,000455: 43,3652           13662                           BZF      NXTSUPR                               #  INCREMENT SUPER BANK
060171,000456: 43,3653           63242        27TO30             AD       S13BITS                               
060172,000457: 43,3654           00006                           EXTEND                                         
060173,000458: 43,3655           13657                           BZF      +2                                    #  BANK SET FOR 30
060174,000459: 43,3656           03664                           TC       GONXTBNK                              
060175,000460: 43,3657           33240                           CA       SIXTY                                 #  FIRST SUPER BANK
060176,000461: 43,3660           27374                           ADS      SKEEP4                                
060177,000462: 43,3661           03664                           TC       GONXTBNK                              
060178,000463: 43,3662           63241        NXTSUPR            AD       SUPRCON                               #  SET BNK 30 + INCR SUPR BNK AND CANCEL
060179,000464: 43,3663           27374                           ADS      SKEEP4                                #  ERC BIT OF THE 37 TO 40 ADVANCE.
060180,000465: 43,3664           11377        GONXTBNK           CCS      SKEEP7                                
060181,000466: 43,3665           03527                           TC       COMMFX                                
060182,000467: 43,3666           35017                           CA       S+1                                   
060183,000468: 43,3667           03545                           TC       FXFX                                  
060184,000469: 43,3670           35011                           CA       SBIT7                                 #  HAS TO BE LARGER THAN NO OF FXSW BANKS.
060185,000470: 43,3671           03527                           TC       COMMFX                                
060186,000471: 
060187,000472: 43,3672           31374        SOPTION            CA       SKEEP4                                
060188,000473: 43,3673           74364                           MASK     HI5                                   #  = BANK BITS
060189,000474: 43,3674           04345                           TC       LEFT5                                 

Page 1403

060191,000476: 43,3675           54001                           TS       L                                     #  BANK NUMBER BEFORE SUPER BANK
060192,000477: 43,3676           31374                           CA       SKEEP4                                
060193,000478: 43,3677           74373                           MASK     S8BITS                                #  = SUPER BANK BITS
060194,000479: 43,3700           00006                           EXTEND                                         
060195,000480: 43,3701           13707                           BZF      SOPT                                  #  BEFORE SUPER BANK
060196,000481: 43,3702           54021                           TS       SR                                    #  SUPER BANK NECESSARY
060197,000482: 43,3703           30001                           CA       L                                     
060198,000483: 43,3704           75023                           MASK     SEVEN                                 
060199,000484: 43,3705           60021                           AD       SR                                    
060200,000485: 43,3706           54001                           TS       L                                     #  BANK NUMBER WITH SUPER BANK
060201,000486: 43,3707           31376        SOPT               CA       SKEEP6                                #  *
060202,000487: 43,3710           00006                           EXTEND                                         #  *
060203,000488: 43,3711           13713                           BZF      +2                                    #  * ON -0 CONTINUE WITH ROPE CHECK.
060204,000489: 43,3712           02773                           TC       SDISPLAY                              #  * ON +1 GO TO DISPLAY OF SUM.
060205,000490: 43,3713           11371                           CCS      SKEEP1                                #  FORCE SUM TO ABSOLUTE VALUE.
060206,000491: 43,3714           03716                           TC       +2                                    
060207,000492: 43,3715           03717                           TC       +2                                    
060208,000493: 43,3716           65017                           AD       S+1                                   
060209,000494: 43,3717           55371                           TS       SKEEP1                                
060210,000495: 43,3720           40001        BNKCHK             CS       L                                     #  = - BANK NUMBER
060211,000496: 43,3721           61371                           AD       SKEEP1                                
060212,000497: 43,3722           67716                           AD       S-1                                   
060213,000498: 43,3723           03275                           TC       -1CHK                                 #  CHECK SUM
060214,000499: 43,3724           03635                           TC       NXTBNK                                
060215,000500: 
060216,000501: 43,3725     0067                                  EBANK=   NEWJOB                                
060217,000502: 43,3725           66100        LSTBNKCH           BBCON*                                         #  * CONSTANT, LAST BANK.
060218,000503: 43,3726  30,2000                                  SBANK=   LOWSUPER                              
060219,000504: 
060220,000505: 

End of include-file AGC_BLOCK_TWO_SELF-CHECK.agc.  Parent file is MAIN.agc