Source Code
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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.
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051986,000002: ## Copyright: Public domain.
051987,000003: ## Filename: EXECUTIVE.agc
051988,000004: ## Purpose: A section of Comanche revision 044.
051989,000005: ## It is part of the reconstructed source code for the
051990,000006: ## original release of the flight software for the Command
051991,000007: ## Module's (CM) Apollo Guidance Computer (AGC) for Apollo 10.
051992,000008: ## The code has been recreated from a copy of Comanche 055. It
051993,000009: ## has been adapted such that the resulting bugger words
051994,000010: ## exactly match those specified for Comanche 44 in NASA drawing
051995,000011: ## 2021153D, which gives relatively high confidence that the
051996,000012: ## reconstruction is correct.
051997,000013: ## Assembler: yaYUL
051998,000014: ## Contact: Ron Burkey <info@sandroid.org>.
051999,000015: ## Website: www.ibiblio.org/apollo/index.html
052000,000016: ## Mod history: 2020-12-03 MAS Created from Comanche 51.
052001,000017:
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Page 1208
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052003,000019: 5134 BLOCK 02
052004,000020:
052005,000021: # TO ENTER A JOB REQUEST REQUIRING NO VAC AREA:
052006,000022:
052007,000023: 5134 COUNT 02/EXEC
052008,000024:
052009,000025: 5134 00004 NOVAC INHINT
052010,000026: 5135 65226 AD FAKEPRET # LOC(MPAC +6) - LOC(QPRET)
052011,000027: 5136 54063 TS NEWPRIO # PRIORITY OF NEW JOB + NOVAC C(FIXLOC)
052012,000028:
052013,000029: 5137 00006 EXTEND
052014,000030: 5140 50002 INDEX Q # Q WILL BE UNDISTURBED THROUGHOUT.
052015,000031: 5141 30001 DCA 0 # 2CADR OF JOB ENTERED.
052016,000032: 5142 52066 DXCH NEWLOC
052017,000033: 5143 35225 CAF EXECBANK
052018,000034: 5144 56004 XCH FBANK
052019,000035: 5145 54061 TS EXECTEM1
052020,000036: 5146 12650 TCF NOVAC2 # ENTER EXECUTIVE BANK.
052021,000037:
052022,000038: # TO ENTER A JOB REQUEST REQUIRING A VAC AREA - E.G., ALL (PARTIALLY) INTERPRETIVE JOBS.
052023,000039:
052024,000040: 5147 00004 FINDVAC INHINT
052025,000041: 5150 54063 TS NEWPRIO
052026,000042: 5151 00006 EXTEND
052027,000043: 5152 50002 INDEX Q
052028,000044: 5153 30001 DCA 0
052029,000045: 5154 52066 SPVACIN DXCH NEWLOC
052030,000046: 5155 35225 CAF EXECBANK
052031,000047: 5156 56004 XCH FBANK
052032,000048: 5157 12626 TCF FINDVAC2 # OFF TO EXECUTIVE SWITCHED-BANK.
052033,000049:
052034,000050: # TO ENTER A FINDVAC WITH THE PRIORITY IN NEWPRIO TO THE 2CADR ARRIVING IN A AND L:
052035,000051: # USERS OF SPVAC MUST INHINT BEFORE STORING IN NEWPRIO.
052036,000052:
052037,000053: 5160 56002 SPVAC XCH Q
052038,000054: 5161 67715 AD NEG2
052039,000055: 5162 56002 XCH Q
052040,000056: 5163 15154 TCF SPVACIN
052041,000057:
052042,000058: # TO SUSPEND A BASIC JOB SO A HIGHER PRIORITY JOB MAY BE SERVICED:
052043,000059:
052044,000060: 5164 22002 CHANG1 LXCH Q
052045,000061: 5165 35225 CAF EXECBANK
052046,000062: 5166 56006 XCH BBANK
052047,000063: 5167 12727 TCF CHANJOB
052048,000064:
052049,000065: # TO SUSPEND AN INTERPRETIVE JOB:
052050,000066:
052051,000067: 5170 40164 CHANG2 CS LOC # NEGATIVE LOC SHOWS JOB = INTERPRETIVE.
052052,000068: # ITRACE (4) REFERS TO "CHANG2".
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Page 1209
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052054,000070: 5171 54001 TS L
052055,000071: 5172 35225 +2 CAF EXECBANK
052056,000072: 5173 54006 TS BBANK
052057,000073: 5174 12726 TCF CHANJOB -1
052058,000074:
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Page 1210
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052060,000076: # TO VOLUNTARILY SUSPEND A JOB UNTIL THE COMPLETION OF SOME ANTICIPATED EVENT (I/O EVENT ETC.):
052061,000077:
052062,000078: 5175 54164 JOBSLEEP TS LOC
052063,000079: 5176 35225 CAF EXECBANK
052064,000080: 5177 54004 TS FBANK
052065,000081: 5200 13017 TCF JOBSLP1
052066,000082:
052067,000083: # TO AWAKEN A JOB PUT TO SLEEP IN THE ABOVE FASHION:
052068,000084:
052069,000085: 5201 00004 JOBWAKE INHINT
052070,000086: 5202 54065 TS NEWLOC
052071,000087: 5203 45016 CS TWO # EXIT IS VIA FINDVAC/NOVAC PROCEDURES.
052072,000088: 5204 26002 ADS Q
052073,000089: 5205 35225 CAF EXECBANK
052074,000090: 5206 56004 XCH FBANK
052075,000091: 5207 13044 TCF JOBWAKE2
052076,000092:
052077,000093: # TO CHANGE THE PRIORITY OF A JOB CURRENTLY UNDER EXECUTION:
052078,000094:
052079,000095: 5210 00004 PRIOCHNG INHINT # NEW PRIORITY ARRIVES IN A. RETURNS TO
052080,000096: 5211 54063 TS NEWPRIO # CALLER AS SOON AS NEW JOB PRIORITY IS
052081,000097: 5212 35225 CAF EXECBANK # HIGHEST. PREPARE FOR POSSIBLE BASIC-
052082,000098: 5213 56006 XCH BBANK # STYLE CHANGE-JOB.
052083,000099: 5214 54165 TS BANKSET
052084,000100: 5215 30002 CA Q
052085,000101: 5216 13113 TCF PRIOCH2
052086,000102:
052087,000103: # TO REMOVE A JOB FROM EXECUTIVE CONSIDERATIONS:
052088,000104:
052089,000105: 5217 35225 ENDOFJOB CAF EXECBANK
052090,000106: 5220 54004 TS FBANK
052091,000107: 5221 13124 TCF ENDJOB1
052092,000108:
052093,000109: 5222 30061 ENDFIND CA EXECTEM1 # RETURN TO CALLER AFTER JOB ENTRY
052094,000110: 5223 54004 TS FBANK # COMPLETE.
052095,000111: 5224 16710 TCF Q+2
052096,000112: 5225 02626 EXECBANK CADR FINDVAC2
052097,000113:
052098,000114: 5226 00110 FAKEPRET ADRES MPAC -36D # LOC(MPAC +6) - LOC(QPRET)
052099,000115:
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Page 1211
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052101,000117: # LOCATE AN AVAILABLE VAC AREA.
052102,000118:
052103,000119: 01,2626 BANK 01
052104,000120: 01,2626 COUNT 01/EXEC
052105,000121:
052106,000122: 01,2626 54061 FINDVAC2 TS EXECTEM1 # (SAVE CALLER'S BANK FIRST.)
052107,000123: 01,2627 10400 CCS VAC1USE
052108,000124: 01,2630 12643 TCF VACFOUND
052109,000125: 01,2631 10454 CCS VAC2USE
052110,000126: 01,2632 12643 TCF VACFOUND
052111,000127: 01,2633 10530 CCS VAC3USE
052112,000128: 01,2634 12643 TCF VACFOUND
052113,000129: 01,2635 10604 CCS VAC4USE
052114,000130: 01,2636 12643 TCF VACFOUND
052115,000131: 01,2637 10660 CCS VAC5USE
052116,000132: 01,2640 12643 TCF VACFOUND
052117,000133: 01,2641 07755 TC BAILOUT
052118,000134: 01,2642 01201 OCT 1201 # NO VAC AREAS.
052119,000135:
052120,000136: 01,2643 65016 VACFOUND AD TWO # RESERVE THIS VAC AREA BY STORING A ZERO
052121,000137: 01,2644 22007 ZL # IN ITS VAC USE REGISTER AND STORE THE
052122,000138: 01,2645 50000 INDEX A # ADDRESS OF THE FIRST WORD OF IT IN THE
052123,000139: 01,2646 21777 LXCH 0 -1 # LOW NINE BITS OF THE PRIORITY WORD.
052124,000140: 01,2647 26063 ADS NEWPRIO
052125,000141:
052126,000142: 01,2650 35021 NOVAC2 CAF ZERO # NOVAC ENTERS HERE. FIND A CORE SET.
052127,000143: 01,2651 54064 TS LOCCTR
052128,000144: 01,2652 32657 CAF NO.CORES # SEVEN SETS OF ELEVEN REGISTERS EACH.
052129,000145: 01,2653 54062 NOVAC3 TS EXECTEM2
052130,000146: 01,2654 50064 INDEX LOCCTR
052131,000147: 01,2655 10167 CCS PRIORITY # EACH PRIORITY REGISTER CONTAINS -0 IF
052132,000148: 01,2656 12717 TCF NEXTCORE # THE CORRESPONDING CORE SET IS AVAILABLE.
052133,000149: 01,2657 00006 NO.CORES DEC 6 B-14
052134,000150: 01,2660 12717 TCF NEXTCORE # AN ACTIVE JOB HAS A POSITIVE PRIORITY
052135,000151: # BUT A DORMANT JOB'S PRIORITY IS NEGATIVE
052136,000152:
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Page 1212
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052138,000154: 01,2661 30063 CORFOUND CA NEWPRIO # SET THE PRIORITY OF THIS JOB IN THE CORE
052139,000155: 01,2662 50064 INDEX LOCCTR # SET'S PRIORITY REGISTER AND SET THE
052140,000156: 01,2663 54167 TS PRIORITY # JOB'S PUSH-DOWN POINTER AT THE BEGINNING
052141,000157: 01,2664 75046 MASK LOW9 # OF THE WORK AREA AND OVERFLOW INDICATOR
052142,000158: 01,2665 50064 INDEX LOCCTR
052143,000159: 01,2666 54166 TS PUSHLOC # OFF TO PREPARE FOR INTERPRETIVE PROGRAMS
052144,000160:
052145,000161: 01,2667 10064 CCS LOCCTR # IF CORE SET ZERO IS BEING LOADED, SET UP
052146,000162: 01,2670 12704 TCF SETLOC # OVFIND AND FIXLOC IMMEDIATELY.
052147,000163: 01,2671 54121 TS OVFIND
052148,000164: 01,2672 30166 CA PUSHLOC
052149,000165: 01,2673 54120 TS FIXLOC
052150,000166:
052151,000167: 01,2674 10067 SPECTEST CCS NEWJOB # SEE IF ANY ACTIVE JOBS WAITING (RARE).
052152,000168: 01,2675 12704 TCF SETLOC # MUST BE AWAKENED BUT UNCHANGED JOB.
052153,000169: 01,2676 05741 TC CCSHOLE
052154,000170: 01,2677 05741 TC CCSHOLE
052155,000171: 01,2700 54067 TS NEWJOB # +0 SHOWS ACTIVE JOB ALREADY SET.
052156,000172: 01,2701 52066 DXCH NEWLOC
052157,000173: 01,2702 52165 DXCH LOC
052158,000174: 01,2703 15222 TCF ENDFIND
052159,000175:
052160,000176: 01,2704 52066 SETLOC DXCH NEWLOC # SET UP THE LOCATION REGISTERS FOR THIS
052161,000177: 01,2705 50064 INDEX LOCCTR
052162,000178: 01,2706 52165 DXCH LOC
052163,000179: 01,2707 50067 INDEX NEWJOB # THIS INDEX INSTRUCTION INSURES THAT THE
052164,000180: 01,2710 40167 CS PRIORITY # HIGHEST ACTIVE PRIORITY WILL BE COMPARED
052165,000181: 01,2711 60063 AD NEWPRIO # WITH THE NEW PRIORITY TO SEE IF NEWJOB
052166,000182: 01,2712 00006 EXTEND # SHOULD BE SET TO SIGNAL A SWITCH.
052167,000183: 01,2713 65222 BZMF ENDFIND
052168,000184: 01,2714 30064 CA LOCCTR # LOCCTR IS LEFT SET AT THIS CORE SET IF
052169,000185: 01,2715 54067 TS NEWJOB # THE CALLER WANTS TO LOAD ANY MPAC
052170,000186: 01,2716 15222 TCF ENDFIND # REGISTERS, ETC.
052171,000187:
052172,000188: 01,2717 33054 NEXTCORE CAF COREINC
052173,000189: 01,2720 26064 ADS LOCCTR
052174,000190: 01,2721 10062 CCS EXECTEM2
052175,000191: 01,2722 12653 TCF NOVAC3
052176,000192: 01,2723 07755 TC BAILOUT # NO CORE SETS.
052177,000193: 01,2724 01202 OCT 1202
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Page 1213
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052179,000195: # THE FOLLOWING ROUTINE SWAPS CORE SET 0 WITH THAT WHOSE RELATIVE ADDRESS IS IN NEWJOB.
052180,000196:
052181,000197: 01,2725 22164 -2 LXCH LOC
052182,000198: 01,2726 30165 -1 CAE BANKSET # BANKSET, NOT BBANK, HAS RIGHT CONTENTS.
052183,000199: 01,2727 00004 CHANJOB INHINT
052184,000200: 01,2730 00006 EXTEND
052185,000201: 01,2731 04007 ROR SUPERBNK # PICK UP CURRENT SBANK FOR BBCON
052186,000202: 01,2732 56001 XCH L # LOC IN A AND BBCON IN L.
052187,000203: 01,2733 50067 +4 INDEX NEWJOB # SWAP LOC AND BANKSET.
052188,000204: 01,2734 52165 DXCH LOC
052189,000205: 01,2735 52165 DXCH LOC
052190,000206:
052191,000207: 01,2736 30165 CAE BANKSET
052192,000208: 01,2737 00006 EXTEND
052193,000209: 01,2740 01007 WRITE SUPERBNK # SET SBANK FOR NEW JOB.
052194,000210: 01,2741 52155 DXCH MPAC # SWAP MULTI-PURPOSE ACCUMULATOR AREAS.
052195,000211: 01,2742 50067 INDEX NEWJOB
052196,000212: 01,2743 52155 DXCH MPAC
052197,000213: 01,2744 52155 DXCH MPAC
052198,000214: 01,2745 52157 DXCH MPAC +2
052199,000215: 01,2746 50067 INDEX NEWJOB
052200,000216: 01,2747 52157 DXCH MPAC +2
052201,000217: 01,2750 52157 DXCH MPAC +2
052202,000218: 01,2751 52161 DXCH MPAC +4
052203,000219: 01,2752 50067 INDEX NEWJOB
052204,000220: 01,2753 52161 DXCH MPAC +4
052205,000221: 01,2754 52161 DXCH MPAC +4
052206,000222: 01,2755 52163 DXCH MPAC +6
052207,000223: 01,2756 50067 INDEX NEWJOB
052208,000224: 01,2757 52163 DXCH MPAC +6
052209,000225: 01,2760 52163 DXCH MPAC +6
052210,000226:
052211,000227: 01,2761 35021 CAF ZERO
052212,000228: 01,2762 56121 XCH OVFIND # MAKE PUSHLOC NEGATIVE IF OVFIND NZ.
052213,000229: 01,2763 00006 EXTEND
052214,000230: 01,2764 12767 BZF +3
052215,000231: 01,2765 40166 CS PUSHLOC
052216,000232: 01,2766 54166 TS PUSHLOC
052217,000233:
052218,000234: 01,2767 52167 DXCH PUSHLOC
052219,000235: 01,2770 50067 INDEX NEWJOB
052220,000236: 01,2771 52167 DXCH PUSHLOC
052221,000237: 01,2772 52167 DXCH PUSHLOC # SWAPS PUSHLOC AND PRIORITY.
052222,000238: 01,2773 35046 CAF LOW9 # SET FIXLOC TO BASE OF VAC AREA.
052223,000239: 01,2774 70167 MASK PRIORITY
052224,000240: 01,2775 54120 TS FIXLOC
052225,000241:
052226,000242: 01,2776 10166 CCS PUSHLOC # SET OVERFLOW INDICATOR ACCORDING TO
052227,000243: 01,2777 35021 CAF ZERO
052228,000244: 01,3000 13005 TCF ENDPRCHG -1
052229,000245:
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Page 1214
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052231,000247: 01,3001 40166 CS PUSHLOC
052232,000248: 01,3002 54166 TS PUSHLOC
052233,000249: 01,3003 35017 CAF ONE
052234,000250: 01,3004 56121 XCH OVFIND
052235,000251: 01,3005 54067 TS NEWJOB
052236,000252:
052237,000253: 01,3006 00003 ENDPRCHG RELINT
052238,000254: 01,3007 52165 DXCH LOC # BASIC JOBS HAVE POSITIVE ADDRESSES, SO
052239,000255: 01,3010 00006 EXTEND # DISPATCH WITH A DTCB.
052240,000256: 01,3011 63013 BZMF +2 # IF INTERPRETIVE, SET UP EBANK, ETC.
052241,000257: 01,3012 52006 DTCB
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Page 1215
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052243,000259: 01,3013 40000 COM # EPILOGUE TO JOB CHANGE FOR INTERPRETIVE
052244,000260: 01,3014 65017 AD ONE
052245,000261: 01,3015 54164 TS LOC # RESUME.
052246,000262: 01,3016 16017 TCF INTRSM
052247,000263:
052248,000264: # COMPLETE JOBSLEEP PREPARATIONS.
052249,000265:
052250,000266: 01,3017 00004 JOBSLP1 INHINT
052251,000267: 01,3020 40167 CS PRIORITY # NNZ PRIORITY SHOWS JOB ASLEEP.
052252,000268: 01,3021 54167 TS PRIORITY
052253,000269: 01,3022 36043 CAF LOW7
052254,000270: 01,3023 70006 MASK BBANK
052255,000271: 01,3024 00006 EXTEND
052256,000272: 01,3025 04007 ROR SUPERBNK # SAVE OLD SUPERBANK VALUE.
052257,000273: 01,3026 54165 TS BANKSET
052258,000274: 01,3027 45021 CS ZERO
052259,000275: 01,3030 54131 JOBSLP2 TS BUF +1 # HOLDS - HIGHEST PRIORITY.
052260,000276: 01,3031 13141 TCF EJSCAN # SCAN FOR HIGHEST PRIORITY ALA ENDOFJOB.
052261,000277:
052262,000278: 01,3032 00004 NUCHANG2 INHINT # QUICK... DONT LET NEWJOB CHANGE TO +0.
052263,000279: 01,3033 10067 CCS NEWJOB
052264,000280: 01,3034 13037 TCF +3 # NEWJOB STILL PNZ
052265,000281: 01,3035 00003 RELINT # NEW JOB HAS CHANGED TO +0. WAKE UP JOB
052266,000282: 01,3036 13233 TCF ADVAN +2 # VIA NUDIRECT. (VERY RARE CASE.)
052267,000283:
052268,000284: 01,3037 35016 CAF TWO
052269,000285: 01,3040 00006 EXTEND
052270,000286: 01,3041 05011 WOR DSALMOUT # TURN ON ACTIVITY LIGHT
052271,000287: 01,3042 52165 DXCH LOC # AND SAVE ADDRESS INFO FOR BENEFIT OF
052272,000288: 01,3043 12733 TCF CHANJOB +4 # POSSIBLE SLEEPING JOB.
052273,000289:
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Page 1216
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052275,000291: # TO WAKE UP A JOB, EACH CORE SET IS FOUND TO LOCATE ALL JOBS WHICH ARE ASLEEP. IF THE FCADR IN THE
052276,000292: # LOC REGISTER OF ANY SUCH JOB MATCHES THAT SUPPLIED BY THE CALLER, THAT JOB IS AWAKENED. IF NO JOB IS FOUND,
052277,000293: # LOCCTR IS SET TO -1 AND NO FURTHER ACTION TAKES PLACE.
052278,000294:
052279,000295: 01,3044 54061 JOBWAKE2 TS EXECTEM1
052280,000296: 01,3045 35021 CAF ZERO # BEGIN CORE SET SCAN.
052281,000297: 01,3046 54064 TS LOCCTR
052282,000298: 01,3047 32657 CAF NO.CORES
052283,000299: 01,3050 54062 JOBWAKE4 TS EXECTEM2
052284,000300: 01,3051 50064 INDEX LOCCTR
052285,000301: 01,3052 10167 CCS PRIORITY
052286,000302: 01,3053 13056 TCF JOBWAKE3 # ACTIVE JOB - CHECK NEXT CORE SET.
052287,000303: 01,3054 00014 COREINC DEC 12 B-14 # 12 REGISTERS PER CORE SET.
052288,000304: 01,3055 13065 TCF WAKETEST # SLEEPING JOB - SEE IF CADR MATCHES.
052289,000305:
052290,000306: 01,3056 33054 JOBWAKE3 CAF COREINC
052291,000307: 01,3057 26064 ADS LOCCTR
052292,000308: 01,3060 10062 CCS EXECTEM2
052293,000309: 01,3061 13050 TCF JOBWAKE4
052294,000310: 01,3062 45017 CS ONE # EXIT IF SLEEPING JOB NOT FOUND.
052295,000311: 01,3063 54064 TS LOCCTR
052296,000312: 01,3064 15222 TCF ENDFIND
052297,000313:
052298,000314: 01,3065 40065 WAKETEST CS NEWLOC
052299,000315: 01,3066 50064 INDEX LOCCTR
052300,000316: 01,3067 60164 AD LOC
052301,000317: 01,3070 00006 EXTEND
052302,000318: 01,3071 13073 BZF +2 # IF MATCH.
052303,000319: 01,3072 13056 TCF JOBWAKE3 # EXAMINE NEXT CORE SET IF NO MATCH.
052304,000320:
052305,000321: 01,3073 50064 INDEX LOCCTR # RE-COMPLEMENT PRIORITY TO SHOW JOB AWAKE
052306,000322: 01,3074 40167 CS PRIORITY
052307,000323: 01,3075 54063 TS NEWPRIO
052308,000324: 01,3076 50064 INDEX LOCCTR
052309,000325: 01,3077 54167 TS PRIORITY
052310,000326:
052311,000327: 01,3100 44364 CS FBANKMSK # MAKE UP THE 2CADR OF THE WAKE ADDRESS
052312,000328: 01,3101 70065 MASK NEWLOC # USING THE CADR IN NEWLOC AND THE EBANK
052313,000329: 01,3102 65005 AD 2K # HALF OF BBANK SAVED IN BANKSET.
052314,000330: 01,3103 56065 XCH NEWLOC
052315,000331: 01,3104 74364 MASK FBANKMSK
052316,000332: 01,3105 50064 INDEX LOCCTR
052317,000333: 01,3106 60165 AD BANKSET
052318,000334: 01,3107 54066 TS NEWLOC +1
052319,000335:
052320,000336: 01,3110 10064 CCS LOCCTR # SPECIAL TREATMENT IF THIS JOB WAS
052321,000337: 01,3111 12704 TCF SETLOC # ALREADY IN THE RUN (0) POSITION.
052322,000338: 01,3112 12674 TCF SPECTEST
052323,000339:
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Page 1217
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052325,000341: # PRIORITY CHANGE. CHANGE THE CONTENTS OF PRIORITY AND SCAN FOR THE JOB OF HIGHEST PRIORITY.
052326,000342:
052327,000343: 01,3113 54164 PRIOCH2 TS LOC
052328,000344: 01,3114 35021 CAF ZERO # SET FLAG TO TELL ENDJOB SCANNER IF THIS
052329,000345: 01,3115 54130 TS BUF # JOB IS STILL HIGHEST PRIORITY.
052330,000346: 01,3116 35046 CAF LOW9
052331,000347: 01,3117 70167 MASK PRIORITY
052332,000348: 01,3120 60063 AD NEWPRIO
052333,000349: 01,3121 54167 TS PRIORITY
052334,000350: 01,3122 40000 COM
052335,000351: 01,3123 13030 TCF JOBSLP2 # AND TO EJSCAN.
052336,000352:
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Page 1218
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052338,000354: # RELEASE THIS CORE SET AND VAC AREA AND SCAN FOR THE JOB OF HIGHEST ACTIVE PRIORITY.
052339,000355:
052340,000356: 01,3124 00004 ENDJOB1 INHINT
052341,000357: 01,3125 45021 CS ZERO
052342,000358: 01,3126 54131 TS BUF +1
052343,000359: 01,3127 56167 XCH PRIORITY
052344,000360: 01,3130 75046 MASK LOW9
052345,000361: 01,3131 54001 TS L
052346,000362:
052347,000363: 01,3132 45226 CS FAKEPRET
052348,000364: 01,3133 60001 AD L
052349,000365:
052350,000366: 01,3134 00006 EXTEND
052351,000367: 01,3135 63141 BZMF EJSCAN # NOVAC ENDOFJOB
052352,000368:
052353,000369: 01,3136 10001 CCS L
052354,000370: 01,3137 50000 INDEX A
052355,000371: 01,3140 54000 TS 0
052356,000372:
052357,000373: 01,3141 10203 EJSCAN CCS PRIORITY +12D
052358,000374: 01,3142 03206 TC EJ1
052359,000375: 01,3143 05741 TC CCSHOLE
052360,000376: 01,3144 13145 TCF +1
052361,000377:
052362,000378: 01,3145 10217 CCS PRIORITY +24D # EXAMINE EACH PRIORITY REGISTER TO FIND
052363,000379: 01,3146 03206 TC EJ1 # THE JOB OF HIGHEST ACTIVE PRIORITY.
052364,000380: 01,3147 05741 TC CCSHOLE
052365,000381: 01,3150 13151 TCF +1
052366,000382:
052367,000383: 01,3151 10233 CCS PRIORITY +36D
052368,000384: 01,3152 03206 TC EJ1
052369,000385: 01,3153 67610 -CCSPR -CCS PRIORITY
052370,000386: 01,3154 13155 TCF +1
052371,000387:
052372,000388: 01,3155 10247 CCS PRIORITY +48D
052373,000389: 01,3156 03206 TC EJ1
052374,000390: 01,3157 05741 TC CCSHOLE
052375,000391: 01,3160 13161 TCF +1
052376,000392:
052377,000393: 01,3161 10263 CCS PRIORITY +60D
052378,000394: 01,3162 03206 TC EJ1
052379,000395: 01,3163 05741 TC CCSHOLE
052380,000396: 01,3164 13165 TCF +1
052381,000397:
052382,000398: 01,3165 10277 CCS PRIORITY +72D
052383,000399: 01,3166 03206 TC EJ1
052384,000400: 01,3167 05741 TC CCSHOLE
052385,000401: 01,3170 13171 TCF +1
052386,000402:
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Page 1219
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052388,000404: # EVALUATE THE RESULTS OF THE SCAN.
052389,000405:
052390,000406: 01,3171 10131 CCS BUF +1 # SEE IF THERE ARE ANY ACTIVE JOBS WAITING
052391,000407: 01,3172 05741 TC CCSHOLE
052392,000408: 01,3173 05741 TC CCSHOLE
052393,000409:
052394,000410: 01,3174 13176 TCF +2
052395,000411: 01,3175 13223 TCF DUMMYJOB
052396,000412: 01,3176 10130 CCS BUF # BUF IS ZERO IF THIS IS A PRIOCHNG AND
052397,000413: 01,3177 13201 TCF +2 # CHANGED PRIORITY IS STILL HIGHEST.
052398,000414: 01,3200 13005 TCF ENDPRCHG -1
052399,000415:
052400,000416: 01,3201 50000 INDEX A # OTHERWISE, SET NEWJOB TO THE RELATIVE
052401,000417: 01,3202 27777 CAF 0 -1 # ADDRESS OF THE NEW JOB'S CORE SET.
052402,000418: 01,3203 63153 AD -CCSPR
052403,000419: 01,3204 54067 TS NEWJOB
052404,000420: 01,3205 12725 TCF CHANJOB -2
052405,000421:
052406,000422: 01,3206 54132 EJ1 TS BUF +2
052407,000423: 01,3207 60131 AD BUF +1 # - OLD HIGH PRIORITY.
052408,000424: 01,3210 10000 CCS A
052409,000425: 01,3211 40132 CS BUF +2
052410,000426: 01,3212 13216 TCF EJ2 # NEW HIGH PRIORITY.
052411,000427: 01,3213 13214 NOOP
052412,000428: 01,3214 50002 INDEX Q
052413,000429: 01,3215 00002 TC 2 # PROCEED WITH SEARCH.
052414,000430:
052415,000431: 01,3216 54131 EJ2 TS BUF +1
052416,000432: 01,3217 00006 EXTEND
052417,000433: 01,3220 22130 QXCH BUF # FOR LOCATING CCS PRIORITY + X INSTR.
052418,000434: 01,3221 50130 INDEX BUF
052419,000435: 01,3222 00002 TC 2
052420,000436:
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Page 1220
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052422,000438: # IDLING AND COMPUTER ACTIVITY (GREEN) LIGHT MAINTENANCE. THE IDLING ROUTINE IS NOT A JOB IN ITSELF,
052423,000439: # BUT RATHER A SUBROUTINE OF THE EXECUTIVE.
052424,000440:
052425,000441: 01,3223 1361 EBANK= SELFRET # SELF-CHECK STORAGE IN EBANK.
052426,000442:
052427,000443: 01,3223 45021 DUMMYJOB CS ZERO # SET NEWJOB TO -0 FOR IDLING.
052428,000444: 01,3224 54067 TS NEWJOB
052429,000445: 01,3225 00003 RELINT
052430,000446: 01,3226 45016 CS TWO # TURN OFF THE ACTIVITY LIGHT.
052431,000447: 01,3227 00006 EXTEND
052432,000448: 01,3230 03011 WAND DSALMOUT
052433,000449: 01,3231 10067 ADVAN CCS NEWJOB # IS A NEWJOB ACTIVE?
052434,000450: 01,3232 13032 TCF NUCHANG2 # YES... ONE REQUIRING A CHANGE JOB.
052435,000451: 01,3233 35016 CAF TWO # NEW JOB ALREADY IN POSITION FOR
052436,000452: 01,3234 13242 TCF NUDIRECT # EXECUTION.
052437,000453:
052438,000454: 01,3235 31361 CA SELFRET
052439,000455: 01,3236 54001 TS L # PUT RETURN ADDRESS IN L.
052440,000456: 01,3237 33241 CAF SELFBANK
052441,000457: 01,3240 15230 TCF SUPDXCHZ +1 # AND DISPATCH JOB.
052442,000458:
052443,000459: 01,3241 1361 EBANK= SELFRET
052444,000460: 01,3241 66102 SELFBANK BBCON SELFCHK
052445,000461:
052446,000462: 01,3242 00006 NUDIRECT EXTEND # TURN THE GREEN LIGHT BACK ON.
052447,000463: 01,3243 05011 WOR DSALMOUT
052448,000464: 01,3244 52165 DXCH LOC # JOBS STARTED IN THIS FASHION MUST BE
052449,000465: 01,3245 15227 TCF SUPDXCHZ
052450,000466:
052451,000467: 5227 BLOCK 2 # IN FIXED-FIXED SO OTHERS MAY USE.
052452,000468:
052453,000469: 5227 COUNT 02/EXEC
052454,000470:
052455,000471: # SUPDXCHZ - ROUTINE TO TRANSFER TO SUPERBANK.
052456,000472: # CALLING SEQUENCE
052457,000473: # TCF SUPDXCHZ WITH 2CADR OF DESIRED LOCATION IN A + L.
052458,000474:
052459,000475: 5227 56001 SUPDXCHZ XCH L # BASIC.
052460,000476: 5230 00006 +1 EXTEND
052461,000477: 5231 01007 WRITE SUPERBNK
052462,000478: 5232 54006 TS BBANK
052463,000479: 5233 00001 TC L
052464,000480:
052465,000481: 5234 77677 NEG100 OCT 77677
052466,000482:
052467,000483:
052468,000484:
End of include-file EXECUTIVE.agc. Parent file is MAIN.agc