Source Code

This is the source-code for the Apollo 9 Command Module's Guidance Computer. These files were derived originally from the scan from MIT's Dibner Institute's now-discontinued website titled "History of Recent Science and Technology", which in turn was originally created by Gary Neff, though his high-quality scans were unfortunately reduced in legibility when presented online. The markings on the front of the printout imply that it was the original AGC developer Norm Brodeur's copy. A scan by Ron Burkey has superceded it, made from a more-legible copy from the collection of original AGC developer Fred Martin. The source code was transcribed from those images by Ron Burkey. 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:

	ASSEMBLE REVISION 249 OF AGC PROGRAM COLOSSUS BY NASA 2021111-041
	20'35 OCT. 28,1968
Note that the date is the date of the printout, not the date of the program revision.

052113,000002:                                                                                                  ## Copyright:   Public domain.
052114,000003:                                                                                                  ## Filename:    WAITLIST.agc
052115,000004:                                                                                                  ## Purpose:     Part of the source code for Colossus, build 249.
052116,000005:                                                                                                  ##              It is part of the source code for the Command Module's (CM)
052117,000006:                                                                                                  ##              Apollo Guidance Computer (AGC), for Apollo 9.
052118,000007:                                                                                                  ## Assembler:   yaYUL
052119,000008:                                                                                                  ## Reference:   Begins on p. 1191
052120,000009:                                                                                                  ## Contact:     Ron Burkey <info@sandroid.org>.
052121,000010:                                                                                                  ## Website:     www.ibiblio.org/apollo/index.html
052122,000011:                                                                                                  ## Mod history: 08/28/04   RSB  Began adapting from similar Luminary131 file.
052123,000012:                                                                                                  ##              05/14/05   RSB  Corrected website reference above.
052124,000013:                                                                                                  ##              2010-10-24 JL   Indentation fixes.
052125,000014:                                                                                                  ##              2011-05-07 JL   Remove workarounds.
052126,000015:                                                                                                  ##              2017-01-06 RSB  Page numbers now agree with those on the
052127,000016:                                                                                                  ##                              original harcopy, as opposed to the PDF page
052128,000017:                                                                                                  ##                              numbers in 1701.pdf.
052129,000018:                                                                                                  ##              2017-01-20 RSB  Cross-diff'd comment text (not whitespace)
052130,000019:                                                                                                  ##                              vs the already-proofed corresponding Colossus
052131,000020:                                                                                                  ##                              237 and Comanche 55 source-code files
052132,000021:                                                                                                  ##                              and corrected errors found.
052133,000022:                                                                                                  ##              2017-02-09 RSB  Comment-text fixes identified in proofing Artemis 72
052134,000023:                                                                                                  ##              2017-03-16 RSB  Comment-text fixes identified in 5-way
052135,000024:                                                                                                  ##                              side-by-side diff of Luminary 69/99/116/131/210.
052136,000025: 
052137,000026:                                                                                                  ## The contents of the "Colossus249" files, in general, are transcribed 
052138,000027:                                                                                                  ## from a scanned copy of the program listing.  Notations on this
052139,000028:                                                                                                  ## document read, in part:
052140,000029:                                                                                                  ##
052141,000030:                                                                                                  ##      Assemble revision 249 of AGC program Colossus by NASA
052142,000031:                                                                                                  ##      2021111-041.  October 28, 1968.  
052143,000032:                                                                                                  ##
052144,000033:                                                                                                  ##      This AGC program shall also be referred to as
052145,000034:                                                                                                  ##                              Colossus 1A
052146,000035:                                                                                                  ##
052147,000036:                                                                                                  ##      Prepared by
052148,000037:                                                                                                  ##                      Massachusetts Institute of Technology
052149,000038:                                                                                                  ##                      75 Cambridge Parkway
052150,000039:                                                                                                  ##                      Cambridge, Massachusetts
052151,000040:                                                                                                  ##      under NASA contract NAS 9-4065.
052152,000041:                                                                                                  ##
052153,000042:                                                                                                  ## Refer directly to the online document mentioned above for further information.
052154,000043:                                                                                                  ## Please report any errors (relative to the scanned pages) to info@sandroid.org.
052155,000044:                                                                                                  ##
052156,000045:                                                                                                  ## In some cases, where the source code for Luminary 131 overlaps that of 
052157,000046:                                                                                                  ## Colossus 249, this code is instead copied from the corresponding Luminary 131
052158,000047:                                                                                                  ## source file, and then is proofed to incorporate any changes.
052159,000048: 

Page 1191

052161,000050:                                                                                                  #  PROGRAM DESCRIPTION                                           DATE - 10 OCTOBER 1966
052162,000051:                                                                                                  #  MOD NO - 2                                                    LOG SECTION - WAITLIST
052163,000052:                                                                                                  #  MOD BY - MILLER       (DTMAX INCREASED TO 162.5 SEC)          ASSEMBLY SUNBURST REV 5
052164,000053:                                                                                                  #  MOD 3 BY KERNAN       (INHINT INSERTED AT WAITLIST) 2/28/68 SKIPPER REV 4
052165,000054:                                                                                                  #  MOD 4 BY KERNAN       (TWIDDLE IN 54) 3/28/68 SKIPPER REV 13.
052166,000055: 
052167,000056:                                                                                                  #  FUNCTIONAL DESCRIPTION -
052168,000057:                                                                                                  #        PART OF A SECTION OF PROGRAMS,- WAITLIST, TASKOVER, T3RUPT, USED TO CALL A PROGRAM, (CALLED A TASK),
052169,000058:                                                                                                  #        WHICH IS TO BEGIN IN C(A) CENTISECONDS.  WAITLIST UPDATES TIME3, LST1 AND LST2.  THE MEANING OF THESE LISTS
052170,000059:                                                                                                  #        FOLLOW.
052171,000060: 
052172,000061:                                                                                                  #                C(TIME3) = 16384 -(T1-T) CENTISECONDS, (T=PRESENT TIME, T1-TIME FOR TASK1)
052173,000062: 
052174,000063:                                                                                                  #                        C(LST1)         =       -(T2-T1)+1
052175,000064:                                                                                                  #                        C(LST1 +1)      =       -(T3-T2)+1
052176,000065:                                                                                                  #                        C(LST1 +2)      =       -(T4-T3)+1
052177,000066:                                                                                                  #                                        .
052178,000067:                                                                                                  #                                        .
052179,000068:                                                                                                  #                        C(LST1 +6)      =       -(T8-T7)+1
052180,000069:                                                                                                  #                        C(LST1 +7)      =       -(T9-T8)+1
052181,000070: 
052182,000071:                                                                                                  #                        C(LST2)         =       2CADR OF TASK1
052183,000072:                                                                                                  #                        C(LST2 +2)      =       2CADR OF TASK2
052184,000073:                                                                                                  #                                        .
052185,000074:                                                                                                  #                                        .
052186,000075:                                                                                                  #                        C(LST2 +14)     =       2CADR OF TASK8
052187,000076:                                                                                                  #                        C(LST2 +16)     =       2CADR OF TASK9
052188,000077: 
052189,000078:                                                                                                  #  WARNINGS-
052190,000079:                                                                                                  #  --------
052191,000080:                                                                                                  #        1)      1 <= C(A) <= 16250D (1 CENTISECOND TO 162.5 SEC)
052192,000081:                                                                                                  #        2)      9 TASKS MAXIMUM
052193,000082:                                                                                                  #        3)      TASKS CALLED UNDER INTERRUPT INHIBITED
052194,000083:                                                                                                  #        4)      TASKS END BY TC TASKOVER
052195,000084: 
052196,000085:                                                                                                  #  CALLING SEQUENCE -
052197,000086:                                                                                                  #        L-1     CA      DELTAT  (TIME IN CENTISECONDS TO TASK START)
052198,000087:                                                                                                  #        L       TC      WAITLIST
052199,000088:                                                                                                  #        L+1     2CADR   DESIRED TASK
052200,000089:                                                                                                  #        L+2     (MINOR OF 2CADR)
052201,000090:                                                                                                  #        L+3     RELINT          (RETURNS HERE)
052202,000091: 
052203,000092:                                                                                                  #  TWIDDLE-
052204,000093:                                                                                                  #  -------
052205,000094:                                                                                                  #        TWIDDLE IS FOR USE WHEN THE TASK BEING SET UP IS IN THE SAME EBANK AND FBANK AS THE USER.  IN
052206,000095:                                                                                                  #        SUCH CASES, IT IMPROVES UPON WAITLIST BY ELIMINATING THE NEED FOR THE BBCON HALF OF THE 2CADR,

Page 1192

052208,000097:                                                                                                  #        SAVING A WORD.  TWIDDLE IS LIKE WAITLIST IN EVERY RESPECT EXCEPT CALLING SEQUENCE, TO WIT-
052209,000098:                                                                                                  #                L-1     CA      DELTAT
052210,000099:                                                                                                  #                L       TC      TWIDDLE
052211,000100:                                                                                                  #                L+1     ADRES   DESIRED TASK
052212,000101:                                                                                                  #                L+2     RELINT          (RETURNS HERE)
052213,000102: 
052214,000103:                                                                                                  #  NORMAL EXIT MODES -
052215,000104:                                                                                                  #        AT L+3 OF CALLING SEQUENCE
052216,000105: 
052217,000106:                                                                                                  #  ALARM OR ABORT EXIT MODES -
052218,000107:                                                                                                  #        TC      ABORT
052219,000108:                                                                                                  #        OCT     1203    (WAITLIST OVERFLOW - TOO MANY TASKS)
052220,000109: 
052221,000110:                                                                                                  #  ERASABLE INITIALIZATION REQUIRED -
052222,000111:                                                                                                  #        ACCOMPLISHED BY FRESH START,--  LST2, ..., LST2 +16 = ENDTASK
052223,000112:                                                                                                  #                                        LST1, ..., LST1 +7  = NEG1/2
052224,000113: 
052225,000114:                                                                                                  #  OUTPUT --
052226,000115:                                                                                                  #        LST1 AND LST2 UPDATED WITH NEW TASK AND ASSOCIATED TIME.
052227,000116: 
052228,000117:                                                                                                  #  DEBRIS -
052229,000118:                                                                                                  #        CENTRALS - A,Q,L
052230,000119:                                                                                                  #        OTHER    - WAITEXIT, WAITADR, WAITTEMP, WAITBANK
052231,000120: 
052232,000121:                                                                                                  #  DETAILED ANALYSIS OF TIMING -
052233,000122:                                                                                                  #        CONTROL WILL NOT BE RETURNED TO THE SPECIFIED ADDRESS (2CADR) IN EXACTLY DELTA T CENTISECONDS.
052234,000123:                                                                                                  #        THE APPROXIMATE TIME MAY BE CALCULATED AS FOLLOWS
052235,000124:                                                                                                  #                LET TO = THE TIME OF THE TC WAITLIST
052236,000125:                                                                                                  #                LET TS = TO +147U + COUNTER INCREMENTS (SET UP TIME)
052237,000126:                                                                                                  #                LET X  = TS -(100TS)/100  (VARIANCE FROM COUNTERS)
052238,000127:                                                                                                  #                LET Y  = LENGTH OF TIME OF INHIBIT INTERRUPT AFTER T3RUPT
052239,000128:                                                                                                  #                LET Z  = LENGTH OF TIME TO PROCESS TASKS WHICH ARE DUE THIS T3RUPT BUT DISPATCHED EARLIER.
052240,000129:                                                                                                  #                         (Z=0, USUALLY)
052241,000130:                                                                                                  #                LET DELTD = THE ACTUAL TIME TAKEN TO GIVE CONTROL TO 2CADR
052242,000131:                                                                                                  #                        THEN DELTD = TS+DELTA T -X +Y +Z +1.05MS* +COUNTERS*
052243,000132:                                                                                                  #                *-THE TIME TAKEN BY WAITLIST ITSELF AND THE COUNTER TICKING DURING THIS WAITLIST TIME.
052244,000133:                                                                                                  #        IN SHORT, THE ACTUAL TIME TO RETURN CONTROL TO A 2CADR IS AUGMENTED BY THE TIME TO SET UP THE TASK:S
052245,000134:                                                                                                  #        INTERRUPT, ALL COUNTERS TICKING, THE T3RUPT PROCESSING TIME, THE WAITLIST PROCESSING TIME AND THE POSSIBILITY
052246,000135:                                                                                                  #        OF OTHER TASKS INHIBITING THE INTERRUPT.
052247,000136: 
052248,000137:    5130                                           BLOCK    02                                    

Page 1193

052250,000139:    5130  E3,1400                                  EBANK=   LST1                                  #  TASK LISTS IN SWITCHED E BANK.
052251,000140: 
052252,000141:    5130                                           COUNT    02/WAIT                               
052253,000142: 
052254,000143:    5130           00004        TWIDDLE            INHINT                                         
052255,000144:    5131           54001                           TS       L                                     #  SAVE DELAY TIME IN L
052256,000145:    5132           34672                           CA       POSMAX                                
052257,000146:    5133           26002                           ADS      Q                                     #  CREATING OVERFLOW AND Q-1 IN Q
052258,000147:    5134           30006                           CA       BBANK                                 
052259,000148:    5135           00006                           EXTEND                                         
052260,000149:    5136           04007                           ROR      SUPERBNK                              
052261,000150:    5137           56001                           XCH      L                                     
052262,000151: 
052263,000152:    5140           00004        WAITLIST           INHINT                                         
052264,000153:    5141           56002                           XCH      Q                                     #  SAVE DELTA T IN Q AND RETURN IN
052265,000154:    5142           54061                           TS       WAITEXIT                              #  WAITEXIT.
052266,000155:    5143           00006                           EXTEND                                         
052267,000156:    5144           50061                           INDEX    WAITEXIT                              #  IF TWIDDLING, THE TS SKIPS TO HERE
052268,000157:    5145           30001                           DCA      0                                     #  PICK UP 2CADR OF TASK.
052269,000158:    5146           54063                 -1        TS       WAITADR                               #  BBCON WILL REMAIN IN L
052270,000159:    5147           35155        DLY2               CAF      WAITBB                                #  ENTRY FROM FIXDELAY AND VARDELAY.
052271,000160:    5150           56006                           XCH      BBANK                                 
052272,000161:    5151           13246                           TCF      WAIT2                                 
052273,000162: 
052274,000163:                                                                                                  #  RETURN TO CALLER AFTER TASK INSERTION:
052275,000164: 
052276,000165:    5152           52062        LVWTLIST           DXCH     WAITEXIT                              
052277,000166:    5153           64711                           AD       TWO                                   
052278,000167:    5154           52006                           DTCB                                           
052279,000168: 
052280,000169:    5155  E3,1400                                  EBANK=   LST1                                  
052281,000170:    5155           02063        WAITBB             BBCON    WAIT2                                 
052282,000171: 
052283,000172:                                                                                                  #  RETURN TO CALLER +2 AFTER WAITING DT SPECIFIED AT CALLER +1.
052284,000173: 
052285,000174:    5156           50002        FIXDELAY           INDEX    Q                                     #  BOTH ROUTINES MUST BE CALLED UNDER
052286,000175:    5157           30000                           CAF      0                                     #  WAITLIST CONTROL AND TERMINATE THE TASK
052287,000176:    5160           24002                           INCR     Q                                     #  IN WHICH THEY WERE CALLED.
052288,000177: 
052289,000178:                                                                                                  #  RETURN TO CALLER +1 AFTER WAITING THE DT AS ARRIVING IN A.
052290,000179: 
052291,000180:    5161           56002        VARDELAY           XCH      Q                                     #  DT TO Q.  TASK ADRES TO WAITADR.
052292,000181:    5162           54063                           TS       WAITADR                               
052293,000182:    5163           30006                           CA       BBANK                                 #  BBANK IS SAVED DURING DELAY.
052294,000183:    5164           00006                           EXTEND                                         
052295,000184:    5165           04007                           ROR      SUPERBNK                              #  ADD SBANK TO BBCON.
052296,000185:    5166           54001                           TS       L                                     
052297,000186:    5167           35172                           CAF      DELAYEX                               
052298,000187:    5170           54061                           TS       WAITEXIT                              #  GO TO TASKOVER AFTER TASK ENTRY.
052299,000188:    5171           15147                           TCF      DLY2                                  
052300,000189: 

Page 1194

052302,000191:    5172           15211        DELAYEX            TCF      TASKOVER   -2                         #  RETURNS TO TASKOVER
052303,000192: 

Page 1195

052305,000194:                                                                                                  #  ENDTASK MUST BE ENTERED IN FIXED-FIXED SO IT IS DISTINGUISHABLE BY ITS ADRES ALONE.
052306,000195: 
052307,000196:    5173  E3,1400                                  EBANK=   LST1                                  
052308,000197:    5173           72602 73714  ENDTASK            -2CADR   SVCT3                                 
052309,000198: 
052310,000199:    5175           10076        SVCT3              CCS      FLAGWRD2                              #  DRIFT FLAG
052311,000200:    5176           15213                           TCF      TASKOVER                              
052312,000201:    5177           15213                           TCF      TASKOVER                              
052313,000202:    5200           15201                           TCF      +1                                    
052314,000203: 
052315,000204:    5201           11322                           CCS      IMUCADR                               #  DON'T DO NBDONLY IF SOMEONE ELSE IS IN
052316,000205:    5202           15213                           TCF      TASKOVER                              #  IMUSTALL.
052317,000206:    5203           15206                           TCF      +3                                    
052318,000207:    5204           15213                           TCF      TASKOVER                              
052319,000208:    5205           15213                           TCF      TASKOVER                              
052320,000209: 
052321,000210:    5206           37672                 +3        CAF      PRIO35                                #  COMPENSATE FOR NBD COEFFICIENTS ONLY.
052322,000211:    5207           05027                           TC       NOVAC                                 #        ENABLE EVERY 81.93 SECONDS
052323,000212:    5210  E3,1460                                  EBANK=   NBDX                                  
052324,000213:    5210           03542 14063                     2CADR    NBDONLY                               
052325,000214: 
052326,000215:    5212           15213                           TCF      TASKOVER                              
052327,000216: 

Page 1196

052329,000218:                                                                                                  #  BEGIN TASK INSERTION.
052330,000219: 
052331,000220: 01,3246                                           BANK     01                                    
052332,000221: 01,3246                                           COUNT    01/WAIT                               
052333,000222: 
052334,000223: 01,3246           54062        WAIT2              TS       WAITBANK                              #  BBANK OF CALLING PROGRAM.
052335,000224: 01,3247           40026                           CS       TIME3                                 
052336,000225: 01,3250           64703                           AD       BIT8                                  #  BIT 8 = OCT 200
052337,000226: 01,3251           10000                           CCS      A                                     #  TEST 200 - C(TIME3).  IF POSITIVE,
052338,000227:                                                                                                  #  IT MEANS THAT TIME3 OVERFLOW HAS OCCURRED PRIOR TO CS TIME3 AND THAT
052339,000228:                                                                                                  #  C(TIME3) = T - T1, INSTEAD OF 1.0 - (T1 - T).  THE FOLLOWING FOUR
052340,000229:                                                                                                  #  ORDERS SET C(A) = TD - T1 + 1 IN EITHER CASE.
052341,000230: 
052342,000231: 01,3252           66056                           AD       OCT40001                              #  OVERFLOW HAS OCCURRED.  SET C(A) =
052343,000232: 01,3253           40000                           CS       A                                     #  T - T1 + 1.0 - 201
052344,000233: 
052345,000234:                                                                                                  #  NORMAL CASE (C(A) NNZ) YIELDS SAME C(A):  -( -(1.0-(T1-T)) + 200) - 1
052346,000235: 
052347,000236: 01,3254           63402                           AD       OCT40201                              
052348,000237: 01,3255           60002                           AD       Q                                     #  RESULT = TD - T1 + 1.
052349,000238: 
052350,000239: 01,3256           10000                           CCS      A                                     #  TEST TD - T1 +1
052351,000240: 
052352,000241: 01,3257           61400                           AD       LST1                                  #  IF TD - T1 POS, GO TO WTLST5 WITH
052353,000242: 01,3260           13322                           TCF      WTLST5                                #  C(A) = (TD - T1) + C(LST1) = TD-T2+1
052354,000243: 
052355,000244: 01,3261           13262                           NOOP                                           
052356,000245: 01,3262           40002                           CS       Q                                     
052357,000246: 
052358,000247:                                                                                                  #  NOTE THAT THIS PROGRAM SECTION IS NEVER ENTERED WHEN T-T1 G/E -1,
052359,000248:                                                                                                  #  SINCE TD-T1+1 = (TD-T) + (T-T1+1), AND DELTA T = TD-T G/E +1.  (G/E
052360,000249:                                                                                                  #  SYMBOL MEANS GREATER THAN OR EQUAL TO).  THUS THERE NEED BE NO CON-
052361,000250:                                                                                                  #  CERN OVER A PREVIOUS OR IMMINENT OVERFLOW OF TIME3 HERE.
052362,000251: 
052363,000252: 01,3263           64675                           AD       POS1/2                                #  WHEN TD IS NEXT, FORM QUANTITY
052364,000253: 01,3264           64675                           AD       POS1/2                                #        1.0 - DELTA T = 1.0 - (TD - T)
052365,000254: 01,3265           56026                           XCH      TIME3                                 
052366,000255: 01,3266           64674                           AD       NEGMAX                                
052367,000256: 01,3267           60002                           AD       Q                                     #  1.0 - DELTAT T NOW COMPLETE.
052368,000257: 01,3270           00006                           EXTEND                                         #  ZERO INDEX Q.
052369,000258: 01,3271           22007                           QXCH     7                                     #  (ZQ)
052370,000259: 

Page 1197

052372,000261: 01,3272           57400        WTLST4             XCH      LST1                                  
052373,000262: 01,3273           57401                           XCH      LST1       +1                         
052374,000263: 01,3274           57402                           XCH      LST1       +2                         
052375,000264: 01,3275           57403                           XCH      LST1       +3                         
052376,000265: 01,3276           57404                           XCH      LST1       +4                         
052377,000266: 01,3277           57405                           XCH      LST1       +5                         
052378,000267: 01,3300           57406                           XCH      LST1       +6                         
052379,000268: 01,3301           57407                           XCH      LST1       +7                         
052380,000269: 
052381,000270: 01,3302           30063                           CA       WAITADR                               #  (MINOR PART OF TASK CADR HAS BEEN IN L.)
052382,000271: 01,3303           50002                           INDEX    Q                                     
052383,000272: 01,3304           13305                           TCF      +1                                    
052384,000273: 
052385,000274: 01,3305           53411                           DXCH     LST2                                  
052386,000275: 01,3306           53413                           DXCH     LST2       +2                         
052387,000276: 01,3307           53415                           DXCH     LST2       +4                         
052388,000277: 01,3310           53417                           DXCH     LST2       +6                         
052389,000278: 01,3311           53421                           DXCH     LST2       +8D                        
052390,000279: 01,3312           53423                           DXCH     LST2       +10D                       #  AT END, CHECK THAT C(LST2 +10) IS STD
052391,000280: 01,3313           53425                           DXCH     LST2       +12D                       
052392,000281: 01,3314           53427                           DXCH     LST2       +14D                       
052393,000282: 01,3315           53431                           DXCH     LST2       +16D                       
052394,000283: 01,3316           65173                           AD       ENDTASK                               #  END ITEM, AS CHECK FOR EXCEEDING
052395,000284:                                                                                                  #  THE LENGTH OF THE LIST.
052396,000285: 01,3317           00006                           EXTEND                                         #  DUMMY TASK ADRES SHOULD BE IN FIXED-
052397,000286: 01,3320           15152                           BZF      LVWTLIST                              #  FIXED SO ITS ADRES ALONE DISTINGUISHES
052398,000287: 01,3321           13375                           TCF      WTABORT                               #  IT.
052399,000288: 

Page 1198

052401,000290: 01,3322           10000        WTLST5             CCS      A                                     #  TEST TD - T2 + 1
052402,000291: 01,3323           61401                           AD       LST1       +1                         
052403,000292: 01,3324           13330                           TCF      +4                                    
052404,000293: 01,3325           64712                           AD       ONE                                   
052405,000294: 01,3326           03403                           TC       WTLST2                                
052406,000295: 01,3327           00001                           OCT      1                                     
052407,000296: 
052408,000297: 01,3330           10000                 +4        CCS      A                                     #  TEST TD - T3 + 1
052409,000298: 01,3331           61402                           AD       LST1       +2                         
052410,000299: 01,3332           13336                           TCF      +4                                    
052411,000300: 01,3333           64712                           AD       ONE                                   
052412,000301: 01,3334           03403                           TC       WTLST2                                
052413,000302: 01,3335           00002                           OCT      2                                     
052414,000303: 
052415,000304: 01,3336           10000                 +4        CCS      A                                     #  TEST TD - T4 + 1
052416,000305: 01,3337           61403                           AD       LST1       +3                         
052417,000306: 01,3340           13344                           TCF      +4                                    
052418,000307: 01,3341           64712                           AD       ONE                                   
052419,000308: 01,3342           03403                           TC       WTLST2                                
052420,000309: 01,3343           00003                           OCT      3                                     
052421,000310: 
052422,000311: 01,3344           10000                 +4        CCS      A                                     #  TEST TD - T5 + 1
052423,000312: 01,3345           61404                           AD       LST1       +4                         
052424,000313: 01,3346           13352                           TCF      +4                                    
052425,000314: 01,3347           64712                           AD       ONE                                   
052426,000315: 01,3350           03403                           TC       WTLST2                                
052427,000316: 01,3351           00004                           OCT      4                                     
052428,000317: 
052429,000318: 01,3352           10000                 +4        CCS      A                                     #  TEST TD - T6 + 1
052430,000319: 01,3353           61405                           AD       LST1       +5                         
052431,000320: 01,3354           13360                           TCF      +4                                    
052432,000321: 01,3355           64712                           AD       ONE                                   
052433,000322: 01,3356           03403                           TC       WTLST2                                
052434,000323: 01,3357           00005                           OCT      5                                     
052435,000324: 
052436,000325: 01,3360           10000                 +4        CCS      A                                     #  TEST TD - T7 + 1
052437,000326: 01,3361           61406                           AD       LST1       +6                         
052438,000327: 01,3362           13366                           TCF      +4                                    
052439,000328: 01,3363           64712                           AD       ONE                                   
052440,000329: 01,3364           03403                           TC       WTLST2                                
052441,000330: 01,3365           00006                           OCT      6                                     
052442,000331: 

Page 1199

052444,000333: 01,3366           10000                 +4        CCS      A                                     
052445,000334: 01,3367           61407                           AD       LST1       +7                         
052446,000335: 01,3370           13374                           TCF      +4                                    
052447,000336: 01,3371           64712                           AD       ONE                                   
052448,000337: 01,3372           03403                           TC       WTLST2                                
052449,000338: 01,3373           00007                           OCT      7                                     
052450,000339: 
052451,000340: 01,3374           10000                 +4        CCS      A                                     
052452,000341: 01,3375           05604        WTABORT            TC       BAILOUT                               #  NO ROOM IN THE INN.
052453,000342: 01,3376           01203                           OCT      1203                                  
052454,000343: 
052455,000344: 01,3377           64712                           AD       ONE                                   
052456,000345: 01,3400           03403                           TC       WTLST2                                
052457,000346: 01,3401           00010                           OCT      10                                    
052458,000347: 
052459,000348: 01,3402           40201        OCT40201           OCT      40201                                 
052460,000349: 

Page 1200

052462,000351:                                                                                                  #  THE ENTRY TO WTLST2 JUST PRECEDING OCT N IS FOR T  LE TD LE T   -1.
052463,000352:                                                                                                  #                                                   N           N+1
052464,000353:                                                                                                  #  (LE MEANS LESS THAN OR EQUAL TO).  AT ENTRY, C(A) = -(TD - T   + 1)
052465,000354:                                                                                                  #                                                              N+1
052466,000355:                                                                                                  #  THE LST1 ENTRY-(T   -T +1) IS TO BE REPLACED BY -(TD - T  + 1), AND
052467,000356:                                                                                                  #                   N+1  N                                 N
052468,000357:                                                                                                  #  THE ENTRY-(T   - TD + 1) IS TO BE INSERTED IMMEDIATELY FOLLOWING.
052469,000358:                                                                                                  #              N+1
052470,000359: 
052471,000360: 01,3403           54064        WTLST2             TS       WAITTEMP                              #  C(A) = -(TD - T + 1)
052472,000361: 01,3404           50002                           INDEX    Q                                     
052473,000362: 01,3405           30000                           CAF      0                                     
052474,000363: 01,3406           54002                           TS       Q                                     #  INDEX VALUE INTO Q.
052475,000364: 
052476,000365: 01,3407           34712                           CAF      ONE                                   
052477,000366: 01,3410           60064                           AD       WAITTEMP                              
052478,000367: 01,3411           50002                           INDEX    Q                                     #  C(A) = -(TD - T ) + 1.
052479,000368: 01,3412           27377                           ADS      LST1       -1                         #                 N
052480,000369: 
052481,000370: 01,3413           40064                           CS       WAITTEMP                              
052482,000371: 01,3414           50002                           INDEX    Q                                     
052483,000372: 01,3415           13272                           TCF      WTLST4                                
052484,000373: 
052485,000374:                                                                                                  #        C(TIME3)        =       1.0 - (T1 - T)
052486,000375: 
052487,000376:                                                                                                  #        C(LST1)         =       - (T2 - T1) + 1
052488,000377:                                                                                                  #        C(LST1+1)       =       - (T3 - T2) + 1
052489,000378:                                                                                                  #        C(LST1+2)       =       - (T4 - T3) + 1
052490,000379:                                                                                                  #        C(LST1+3)       =       - (T5 - T4) + 1
052491,000380:                                                                                                  #        C(LST1+4)       =       - (T6 - T5) + 1
052492,000381: 
052493,000382:                                                                                                  #        C(LST2)         =       2CADR TASK1
052494,000383:                                                                                                  #        C(LST2+2)       =       2CADR TASK2
052495,000384:                                                                                                  #        C(LST2+4)       =       2CADR TASK3
052496,000385:                                                                                                  #        C(LST2+6)       =       2CADR TASK4
052497,000386:                                                                                                  #        C(LST2+8)       =       2CADR TASK5
052498,000387:                                                                                                  #        C(LST2+10)      =       2CADR TASK6
052499,000388: 

Page 1201

052501,000390:                                                                                                  #  ENTERS HERE ON T3 RUPT TO DISPATCH WAITLISTED TASK.
052502,000391: 
052503,000392: 01,3416           00006        T3RUPT             EXTEND                                         
052504,000393: 01,3417           04007                           ROR      SUPERBNK                              #  READ CURRENT SUPERBANK VALUE AND
052505,000394: 01,3420           54016                           TS       BANKRUPT                              #  SAVE WITH E AND F BANK VALUES.
052506,000395: 01,3421           00006                           EXTEND                                         
052507,000396: 01,3422           22012                           QXCH     QRUPT                                 
052508,000397: 
052509,000398: 01,3423           34673        T3RUPT2            CAF      NEG1/2                                #  DISPATCH WAITLIST TASK.
052510,000399: 01,3424           57407                           XCH      LST1       +7                         
052511,000400: 01,3425           57406                           XCH      LST1       +6                         
052512,000401: 01,3426           57405                           XCH      LST1       +5                         
052513,000402: 01,3427           57404                           XCH      LST1       +4                         #  1. MOVE UP LST1 CONTENTS, ENTERING
052514,000403: 01,3430           57403                           XCH      LST1       +3                         #     A VALUE OF 1/2 +1 AT THE BOTTOM
052515,000404: 01,3431           57402                           XCH      LST1       +2                         #     FOR T6-T5, CORRESPONDING TO THE
052516,000405: 01,3432           57401                           XCH      LST1       +1                         #     INTERVAL 81.91 SEC FOR ENDTASK.
052517,000406: 01,3433           57400                           XCH      LST1                                  
052518,000407: 01,3434           64672                           AD       POSMAX                                #  2. SET T3 = 1.0 - T2 - T USING LIST 1.
052519,000408: 01,3435           26026                           ADS      TIME3                                 #     SO T3 WONT TICK DURING UPDATE.
052520,000409: 01,3436           54734                           TS       RUPTAGN                               
052521,000410: 01,3437           44714                           CS       ZERO                                  
052522,000411: 01,3440           54734                           TS       RUPTAGN                               #  SETS RUPTAGN TO +1 ON OVERFLOW.
052523,000412: 
052524,000413: 01,3441           00006                           EXTEND                                         #  DISPATCH TASK.
052525,000414: 01,3442           45174                           DCS      ENDTASK                               
052526,000415: 01,3443           53431                           DXCH     LST2       +16D                       
052527,000416: 01,3444           53427                           DXCH     LST2       +14D                       
052528,000417: 01,3445           53425                           DXCH     LST2       +12D                       
052529,000418: 01,3446           53423                           DXCH     LST2       +10D                       
052530,000419: 01,3447           53421                           DXCH     LST2       +8D                        
052531,000420: 01,3450           53417                           DXCH     LST2       +6                         
052532,000421: 01,3451           53415                           DXCH     LST2       +4                         
052533,000422: 01,3452           53413                           DXCH     LST2       +2                         
052534,000423: 01,3453           53411                           DXCH     LST2                                  
052535,000424: 
052536,000425: 01,3454           56001                           XCH      L                                     
052537,000426: 01,3455           00006                           EXTEND                                         
052538,000427: 01,3456           01007                           WRITE    SUPERBNK                              #  SET SUPERBANK FROM BBCON OF 2CADR
052539,000428: 01,3457           56001                           XCH      L                                     #  RESTORE TO L FOR DXCH Z.
052540,000429: 01,3460           52006                           DTCB                                           
052541,000430: 

Page 1202

052543,000432:                                                                                                  #  RETURN, AFTER EXECUTION OF T3 OVERFLOW TASK:
052544,000433: 
052545,000434:    5213                                           BLOCK    02                                    
052546,000435:    5213                                           COUNT    02/WAIT                               
052547,000436: 
052548,000437:    5213           10734        TASKOVER           CCS      RUPTAGN                               #  IF +1 RETURN TO T3RUPT, IF -0 RESUME.
052549,000438:    5214           35155                           CAF      WAITBB                                
052550,000439:    5215           54006                           TS       BBANK                                 
052551,000440:    5216           13423                           TCF      T3RUPT2                               #  DISPATCH NEXT TASK IF IT WAS DUE.
052552,000441: 
052553,000442:    5217           30016                           CA       BANKRUPT                              
052554,000443:    5220           00006                           EXTEND                                         
052555,000444:    5221           01007                           WRITE    SUPERBNK                              #  RESTORE SUPERBANK BEFORE RESUME IS DONE
052556,000445: 
052557,000446:    5222           00006        RESUME             EXTEND                                         
052558,000447:    5223           22012                           QXCH     QRUPT                                 
052559,000448:    5224           30016        NOQRSM             CA       BANKRUPT                              
052560,000449:    5225           56006                           XCH      BBANK                                 
052561,000450:    5226           52011        NOQBRSM            DXCH     ARUPT                                 
052562,000451:    5227           00003                           RELINT                                         
052563,000452:    5230           50017                           RESUME                                         
052564,000453: 

Page 1203

052566,000455:                                                                                                  #  LONGCALL
052567,000456:                                                                                                  #  PROGRAM DESCRIPTION                           DATE - 17 MARCH 1967
052568,000457:                                                                                                  #  PROGRAM WRITTEN BY W.H.VANDEVER               LOG SECTION WAITLIST
052569,000458:                                                                                                  #  MOD BY - R. MELANSON TO ADD DOCUMENTATION     ASSEMBLY SUNDISK REV. 100
052570,000459: 
052571,000460:                                                                                                  #  FUNCTIONAL DESCRIPTION -
052572,000461:                                                                                                  #        LONGCALL IS CALLED WITH THE DELTA TIME ARRIVING IN A,L SCALED AS TIME2,TIME1 WITH THE 2CADR OF THE TASK
052573,000462:                                                                                                  #        IMMEDIATELY FOLLOWING THE TC LONGCALL.  FOR EXAMPLE, IT MIGHT BE DONE AS FOLLOWS WHERE TIMELOC IS THE NAME OF
052574,000463:                                                                                                  #        A DP REGISTER CONTAINING A DELTA TIME AND WHERE TASKTODO IS THE NAME OF THE LOCATION AT WHICH LONGCALL IS TO
052575,000464:                                                                                                  #        START
052576,000465:                                                                                                  #  CALLING SEQUENCE -
052577,000466:                                                                                                  #                EXTEND
052578,000467:                                                                                                  #                DCA     TIMELOC
052579,000468:                                                                                                  #                TC      LONGCALL
052580,000469:                                                                                                  #                2CADR   TASKTODO
052581,000470:                                                                                                  #  NORMAL EXIT MODE -
052582,000471:                                                                                                  #        1).     TC      WAITLIST
052583,000472:                                                                                                  #        2).     DTCB    (TO L+3 OF CALLING ROUTINE 1ST PASS THRU LONGCYCL)
052584,000473:                                                                                                  #        3).     DTCB    (TO TASKOVER ON SUBSEQUENT PASSES THRU LONGCYCL)
052585,000474:                                                                                                  #  ALARM OR ABORT EXIT MODE -
052586,000475:                                                                                                  #        NONE
052587,000476:                                                                                                  #  OUTPUT -
052588,000477:                                                                                                  #        LONGTIME AND LONGTIME+1 = DELTA TIME
052589,000478:                                                                                                  #        LONGEXIT AND LONGEXIT+1 = RETURN 2CADR
052590,000479:                                                                                                  #        LONGCADR AND LONGCADR+1 = TASK 2CADR
052591,000480:                                                                                                  #        A = SINGLE PRECISION TIME FOR WAITLIST
052592,000481:                                                                                                  #  ERASABLE INITIALIZATION -
052593,000482:                                                                                                  #        A = MOST SIGNIFICANT PART OF DELTA TIME
052594,000483:                                                                                                  #        L = LEAST SIGNIFICANT PART OF DELTA TIME
052595,000484:                                                                                                  #        Q = ADDRESS OF 2CADR TASK VALUE
052596,000485:                                                                                                  #  DEBRIS -
052597,000486:                                                                                                  #        A,Q,L
052598,000487:                                                                                                  #        LONGCADR AND LONGCADR+1
052599,000488:                                                                                                  #        LONGEXIT AND LONGEXIT+1
052600,000489:                                                                                                  #        LONGTIME AND LONGTIME+1
052601,000490:                                                                                                  #  *** THE FOLLOWING IS TO BE IN FIXED-FIXED AND UNSWITCHED ERRASIBLE ***
052602,000491: 
052603,000492:    5231                                           BLOCK    02                                    
052604,000493:    5231  E3,1400                                  EBANK=   LST1                                  
052605,000494:    5231           53140        LONGCALL           DXCH     LONGTIME                              #  OBTAIN THE DELTA TIME
052606,000495: 
052607,000496:    5232           00006                           EXTEND                                         #  OBTAIN THE 2CADR

Page 1204

052609,000498:    5233           50002                           NDX      Q                                     
052610,000499:    5234           30001                           DCA      0                                     
052611,000500:    5235           53134                           DXCH     LONGCADR                              
052612,000501: 
052613,000502:    5236           00006                           EXTEND                                         #  NOW GO TO THE APPROPRIATE SWITCHED BANK
052614,000503:    5237           35242                           DCA      LGCL2CDR                              #  FOR THE REST OF LONGCALL
052615,000504:    5240           52006                           DTCB                                           
052616,000505: 
052617,000506:    5241  E3,1400                                  EBANK=   LST1                                  
052618,000507:    5241           03461 02063  LGCL2CDR           2CADR    LNGCALL2                              
052619,000508: 
052620,000509:                                                                                                  #  *** THE FOLLOWING MAY BE IN A SWITCHED BANK, INCLUDING ITS ERASABLE ***
052621,000510: 
052622,000511: 01,3461                                           BANK     01                                    
052623,000512: 01,3461                                           COUNT    01/WAIT                               
052624,000513: 
052625,000514: 01,3461           23435        LNGCALL2           LXCH     LONGEXIT   +1                         #  SAVE THE CORRECT BB FOR RETURN
052626,000515: 01,3462           34711                           CA       TWO                                   #  OBTAIN THE RETURN ADDRESS
052627,000516: 01,3463           26002                           ADS      Q                                     
052628,000517: 01,3464           55434                           TS       LONGEXIT                              
052629,000518: 
052630,000519:                                                                                                  #  *** WAITLIST TASK LONGCYCL ***
052631,000520: 
052632,000521: 01,3465           00006        LONGCYCL           EXTEND                                         #  CAN WE SUCCESFULLY TAKE ABOUT 1.25
052633,000522: 01,3466           43477                           DCS      DPBIT14                               #  MINUTES OFF OF LONGTIME
052634,000523: 01,3467           21140                           DAS      LONGTIME                              
052635,000524: 
052636,000525: 01,3470           11140                           CCS      LONGTIME   +1                         #  THE REASONIBG BEHIND THIS PART IS
052637,000526: 01,3471           13510                           TCF      MUCHTIME                              #  INVOLVED, TAKING INTO ACCOUNT THAT THE
052638,000527:                                                                                                  #  WORDS MAY NOT BE SIGNED CORRECTED (DP
052639,000528:                                                                                                  #  BASIC INSTRUCTIONS
052640,000529:                                                                                                  #  DO NOT SIGN CORRECT) AND THAT WE SUBTRAC
052641,000530:                                                                                                  #  TED BIT14 (1 OVER HALF THE POS. VALUE
052642,000531:                                                                                                  #  REPRESENTIBLE IN SINGLE WORD)
052643,000532: 01,3472           13473                           NOOP                                           #  CAN:T GET HERE    **********
052644,000533: 01,3473           13474                           TCF      +1                                    
052645,000534: 01,3474           11137                           CCS      LONGTIME                              
052646,000535: 01,3475           13510                           TCF      MUCHTIME                              
052647,000536: 01,3476           00000        DPBIT14            OCT      00000                                 
052648,000537: 01,3477           20000                           OCT      20000                                 
052649,000538: 
052650,000539:                                                                                                  #  LONGCALL
052651,000540: 01,3500           34675        LASTTIME           CA       BIT14                                 #  GET BACK THE CORRECT DELTA TFOR WAITLIST
052652,000541: 01,3501           27140                           ADS      LONGTIME   +1                         
052653,000542: 01,3502           05140                           TC       WAITLIST                              
052654,000543: 01,3503  E3,1400                                  EBANK=   LST1                                  
052655,000544: 01,3503           03515 02063                     2CADR    GETCADR                               #  THE ENTRY TO OUR LONGCADR
052656,000545: 
052657,000546: 01,3505           33517        LONGRTRN           CA       TSKOVCDR                              #  SET IT UP SO THAT ONLY THE FIRST EXIT IS

Page 1205

052659,000548: 01,3506           53435                           DXCH     LONGEXIT                              #  TO THE CALLER OF LONGCALL
052660,000549: 01,3507           52006                           DTCB                                           #  THE REST ARE TO TASKOVER
052661,000550: 
052662,000551: 01,3510           34675        MUCHTIME           CA       BIT14                                 #  WE HAVE OVER OUR ABOUT 1.25 MINUTES
052663,000552: 01,3511           05140                           TC       WAITLIST                              #  SO SET UP FOR ANOTHER CYCLE THROUGH HERE
052664,000553: 01,3512  E3,1400                                  EBANK=   LST1                                  
052665,000554: 01,3512           03465 02063                     2CADR    LONGCYCL                              
052666,000555: 
052667,000556: 01,3514           13505                           TCF      LONGRTRN                              #  NOW EXIT PROPERLY
052668,000557: 
052669,000558:                                                                                                  #  *** WAITLIST TASK GETCADR ***
052670,000559: 
052671,000560: 01,3515           53134        GETCADR            DXCH     LONGCADR                              #  GET THE LONGCALL THAT WE WISHED TO START
052672,000561: 01,3516           52006                           DTCB                                           #  AND TRANSFER CONTROL TO IT
052673,000562: 
052674,000563: 01,3517           05213        TSKOVCDR           GENADR   TASKOVER                              

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