Source Code

045551,000001: 045552,000002: 045553,000003: 045554,000004: 045555,000005: 045556,000006: 045557,000007: 045558,000008: 045559,000009: 045560,000010: 045561,000011: 045562,000012: 045563,000013: 045564,000014: 045565,000015: 045566,000016: 045567,000017: 5072 045568,000018: 045569,000019: 045570,000020: 045571,000021: 5072 < 045573,000023: 5073 045574,000024: 5074 045575,000025: 045576,000026: 5075 045577,000027: 5076 045578,000028: 5077 045579,000029: 5100 045580,000030: 5101 045581,000031: 5102 045582,000032: 5103 045583,000033: 5104 045584,000034: 045585,000035: 045586,000036: < 045601,000051: 5117 045602,000052: 5120 045603,000053: 5121 045604,000054: 045605,000055: 045606,000056: 045979,000429: 045980,000430: 01,3173 045981,000431: 01,3174 045982,000432: 01,3175 045983,000433: 01,3176 045984,000434: 01,3177 045985,000435: 01,3200 045986,000436: 01,3201 045987,000437: 045988,000438: 045989,000439: 01,3203 045990,000440: 01,3204 045991,000441: 01,3205 045992,000442: 01,3206 045993,000443: 045994,000444: 045995,000445: 045996,000446: 045997,000447: 045998,000448: 01,3207 045999,000449: < 046007,000457: 01,3216 046008,000458: 01,3217 046009,000459: 01,3220 046010,000460: 046011,000461: 01,3221 046012,000462: 01,3222 046013,000463: 01,3223 046014,000464: 01,3224 046015,000465: 046016,000466: 01,3225 # Copyright: Public domain. # Filename: EXECUTIVE.agc # Purpose: A section of Luminary 1C, revision 131. # It is part of the source code for the Lunar Module's (LM) # Apollo Guidance Computer (AGC) for Apollo 13 and Apollo 14. # This file is intended to be a faithful transcription, except # that the code format has been changed to conform to the # requirements of the yaYUL assembler rather than the # original YUL assembler. # Reference: pp. 1102-1115 of 1729.pdf. # Contact: Ron Burkey <info@sandroid.org>. # Website: www.ibiblio.org/apollo/index.html # Mod history: 05/31/03 RSB. Began transcribing. # 05/14/05 RSB Corrected website reference above. # Page 1102 BLOCK 02 # TO ENTER A JOB REQUEST REQUIRING NO VAC AREA: COUNT* $$/EXEC /a>045572,000022: 5072 00004 NOVAC INHINT 65164 AD FAKEPRET # LOC(MPAC +6) - LOC(QPRET) 54063 TS NEWPRIO # PRIORITY OF NEW JOB + NOVAC C(FIXLOC) 00006 EXTEND 50002 INDEX Q # Q WILL BE UNDISTURBED THROUGHOUT. 30001 DCA 0 # 2CADR OF JOB ENTERED. 52066 DXCH NEWLOC 35163 CAF EXECBANK 56004 XCH FBANK 54061 TS EXECTEM1 12626 TCF NOVAC2 # ENTER EXECUTIVE BANK. # TO ENTER A JOB REQUEST REQUIREING A VAC AREA -- E.G., ALL (PARTIALLY) INTERPRETIVE JOBS. 3">045587,000037: 5105 00004 FINDVAC INHINT 54063 TS NEWPRIO 00006 EXTEND 50002 INDEX Q 30001 DCA 0 E">045592,000042: 5112 52066 SPVACIN DXCH NEWLOC 35163 CAF EXECBANK 56004 XCH FBANK 12602 TCF FINDVAC2 # OFF TO EXECUTIVE SWITCHED-BANK. # TO ENTER A FINDVAC WITH THE PRIORITY IN NEWPRIO TO THE 2CADR ARRIVING IN A AND L: # USERS OF SPVAC MUST INHINT BEFORE STORING IN NEWPRIO. /a>045600,000050: 5116 56002 SPVAC XCH Q 67751 AD NEG2 56002 XCH Q 15112 TCF SPVACIN # TO SUSPEND A BASIC JOB SO A HIGHER PRIORITY JOB MAY BE SERVICED: >045607,000057: 5122 22002 CHANG1 LXCH Q 35163 CAF EXECBANK 56006 XCH BBANK 12707 TCF CHANJOB # TO SUSPEND AN INTERPRETIVE JOB: >045614,000064: 5126 40164 CHANG2 CS LOC # NEGATIVE LOC SHOWS JOB = INTERPRETIVE. # ITRACE (4) REFERS TO "CHANG2" 54001 TS L # Page 1103 35163 +2 CAF EXECBANK 54006 TS BBANK 12706 TCF CHANJOB -1 # Page 1104 # TO VOLUNTARILY SUSPEND A JOB UNTIL THE COMPLETION OF SOME ANTICIPATED EVENT (I/O EVENT ETC.): 550">045625,000075: 5133 54164 JOBSLEEP TS LOC 35163 CAF EXECBANK 54004 TS FBANK 12777 TCF JOBSLP1 # TO AWAKEN A JOB PUT TO SLEEP IN THE ABOVE FASHION: 5">045632,000082: 5137 00004 JOBWAKE INHINT 54065 TS NEWLOC 44752 CS TWO # EXIT IS VIA FINDVAC/NOVAC PROCEDURES. 26002 ADS Q 35163 CAF EXECBANK 56004 XCH FBANK 13024 TCF JOBWAKE2 # TO CHANGE THE PRIORITY OF A JOB CURRENTLY UNDER EXECUTION: E47">045642,000092: 5146 00004 PRIOCHNG INHINT # NEW PRIORITY ARRIVES IN A. RETURNS TO 54063 TS NEWPRIO # CALLER AS SOON AS NEW JOB PRIORITY IS 35163 CAF EXECBANK # HIGHEST. PREPARE FOR POSSIBLE BASIC- 56006 XCH BBANK # STYLE CHANGE-JOB. 54165 TS BANKSET 30002 CA Q 13073 TCF PRIOCH2 # TO REMOVE A JOB FROM EXECUTIVE CONSIDERATIONS: F42">045652,000102: 5155 35163 ENDOFJOB CAF EXECBANK 54004 TS FBANK 13104 TCF ENDJOB1 4">045656,000106: 5160 30061 ENDFIND CA EXECTEM1 # RETURN TO CALLER AFTER JOB ENTRY 54004 TS FBANK # COMPLETE. 16744 TCF Q+2 E4B">045659,000109: 5163 02602 EXECBANK CADR FINDVAC2 554">045661,000111: 5164 00110 FAKEPRET ADRES MPAC -36D # LOC(MPAC +6) - LOC(QPRET) # Page 1105 # LOCATE AN AVAILABLE VAC AREA BANK 01 COUNT* $$/EXEC 332">045668,000118: 01,2602 54061 FINDVAC2 TS EXECTEM1 # (SAVE CALLER'S BANK FIRST.) 10400 CCS VAC1USE 12621 TCF VACFOUND 10454 CCS VAC2USE 12621 TCF VACFOUND 10530 CCS VAC3USE 12621 TCF VACFOUND 10604 CCS VAC4USE 12621 TCF VACFOUND 10660 CCS VAC5USE 12621 TCF VACFOUND 22061 LXCH EXECTEM1 30002 CA Q 05706 TC BAILOUT1 31201 OCT 31201 # NO VAC AREAS. E44">045684,000134: 01,2621 64752 VACFOUND AD TWO # RESERVE THIS VAC AREA BY STORING A ZERO 22007 ZL # IN ITS VAC USE REGISTER AND STORE THE 50000 INDEX A # ADDRESS OF THE FIRST WORD OF IT IN THE 21777 LXCH 0 -1 # LOW NINE BITS OF THE PRIORITY WORD. 26063 ADS NEWPRIO >045690,000140: 01,2626 34755 NOVAC2 CAF ZERO # NOVAC ENTERS HERE. FIND A CORE SET. 54064 TS LOCCTR 32635 CAF NO.CORES # SEVEN SETS OF ELEVEN REGISTERS ECH. >045693,000143: 01,2631 54062 NOVAC3 TS EXECTEM2 50064 INDEX LOCCTR 10167 CCS PRIORITY # EACH PRIORITY REGISTER CONTAINS -0 IF 12675 TCF NEXTCORE # THE CORESPONDING CORE SET IS AVAILABLE. 553">045697,000147: 01,2635 00007 NO.CORES DEC 7 B-14 12675 TCF NEXTCORE # AN ACTIVE JOB HAS A POSITIVE PRIORITY # BUT A DORMANT JOB'S PRIORITY IS NEGATIVE # Page 1106 E44">045702,000152: 01,2637 30063 CORFOUND CA NEWPRIO # SET THE PRIORITY OF THIS JOB IN THE CORE 50064 INDEX LOCCTR # SET'S PRIORITY REGISTER AND SET THE 54167 TS PRIORITY # JOB'S PUSH-DOWN POINTER AT THE BEGINNING 75004 MASK LOW9 # OF THE WORK AREA AND OVERFLOW INDICATOR. 50064 INDEX LOCCTR 54166 TS PUSHLOC # OFF TO PREPARE FOR INTERPRETIVE PROGRAMS. 10064 CCS LOCCTR # IF CORE SET ZERO IS BEING LOADED, SET UP 12662 TCF SETLOC # OVFIND AND FIXLOC IMMEDIATELY. 54121 TS OVFIND 30166 CA PUSHLOC 54120 TS FIXLOC 354">045715,000165: 01,2652 10067 SPECTEST CCS NEWJOB # SEE IF ANY ACTIVE JOBS WAITING (RARE). 12662 TCF SETLOC # MUST BE AWAKENED OUT UNCHANGED JOB. 05675 TC CCSHOLE 05675 TC CCSHOLE 54067 TS NEWJOB # +0 SHOWS ACTIVE JOB ALREADY SET. 52066 DXCH NEWLOC 52165 DXCH LOC 15160 TCF ENDFIND >045724,000174: 01,2662 52066 SETLOC DXCH NEWLOC # SET UP THE LOCATION REGISTERS FOR THIS 50064 INDEX LOCCTR 52165 DXCH LOC 50067 INDEX NEWJOB # THIS INDEX INSTRUCTION INSURES THAT THE 40167 CS PRIORITY # HIGHEST ACTIVE PRIORITY WILL BE COMPARED 60063 AD NEWPRIO # WITH THE NEW PRIORITY TO SEE IF NEWJOB 00006 EXTEND # SHOULD BE SET TO SIGNAL A SWITCH. 65160 BZMF ENDFIND 30064 CA LOCCTR # LOCCTR IS LEFT SET AT THIS CORE SET IF 54067 TS NEWJOB # THE CALLER WANTS TO LOAD ANY MPAC 15160 TCF ENDFIND # REGISTERS, ETC. 245">045736,000186: 01,2675 33034 NEXTCORE CAF COREINC 26064 ADS LOCCTR 10062 CCS EXECTEM2 12631 TCF NOVAC3 22061 LXCH EXECTEM1 30002 CA Q 05706 TC BAILOUT1 # NO CORE SETS AVAILABLE. 31202 OCT 31202 # Page 1107 # THE FOLLOWING ROUTINE SWAPS CORE SET 0 WITH THAT WHOSE RELATIVE ADDRESS IS IN NEWJOB. 22164 -2 LXCH LOC 30165 -1 CAE BANKSET # BANKSET, NOT BBANK, HAS RIGHT CONTENTS. 2">045749,000199: 01,2707 00004 CHANJOB INHINT 00006 EXTEND 04007 ROR SUPERBNK # PICK UP CURRENT SBANK FOR BBCON 56001 XCH L # LOC IN A AND BBCON IN L. 50067 +4 INDEX NEWJOB 52165 DXCH LOC 52165 DXCH LOC 30165 CAE BANKSET 00006 EXTEND 01007 WRITE SUPERBNK # SET SBANK FOR NEW JOB. 52155 DXCH MPAC # SWAP MULTI-PURPOSE ACCUMULATOR AREAS. 50067 INDEX NEWJOB 52155 DXCH MPAC 52155 DXCH MPAC 52157 DXCH MPAC +2 50067 INDEX NEWJOB 52157 DXCH MPAC +2 52157 DXCH MPAC +2 52161 DXCH MPAC +4 50067 INDEX NEWJOB 52161 DXCH MPAC +4 52161 DXCH MPAC +4 52163 DXCH MPAC +6 50067 INDEX NEWJOB 52163 DXCH MPAC +6 52163 DXCH MPAC +6 34755 CAF ZERO 56121 XCH OVFIND # MAKE PUSHLOC NEGATIVE IF OVFIND NZ. 00006 EXTEND 12747 BZF +3 40166 CS PUSHLOC 54166 TS PUSHLOC 52167 DXCH PUSHLOC 50067 INDEX NEWJOB 52167 DXCH PUSHLOC 52167 DXCH PUSHLOC # SWAPS PUSHLOC AND PRIORITY. 35004 CAF LOW9 # SET FIXLOC TO BASE OF VAC AREA. 70167 MASK PRIORITY 54120 TS FIXLOC 10166 CCS PUSHLOC # SET OVERFLOW INDICATOR ACCORDING TO 34755 CAF ZERO 12765 TCF ENDPRCHG -1 # Page 1108 40166 CS PUSHLOC 54166 TS PUSHLOC 34753 CAF ONE 56121 XCH OVFIND 54067 TS NEWJOB 847">045803,000253: 01,2766 00003 ENDPRCHG RELINT 52165 DXCH LOC # BASIC JOBS HAVE POSITIVE ADDRESSES, SO 00006 EXTEND # DISPATCH WITH A DTCB. 62773 BZMF +2 # IF INTERPRETIVE, SET UP EBANK, ETC. 52006 DTCB # Page 1109 40000 COM # EPILOGUE TO JOB CHANGE FOR INTERPRETIVE 64753 AD ONE 54164 TS LOC # RESUME 16053 TCF INTRSM # COMPLETE JOBSLEEP PREPARATIONS. 1">045816,000266: 01,2777 00004 JOBSLP1 INHINT 40167 CS PRIORITY # NNZ PRIORITY SHOWS JOB ASLEEP. 54167 TS PRIORITY 36077 CAF LOW7 70006 MASK BBANK 00006 EXTEND 04007 ROR SUPERBNK # SAVE OLD SUPERBANK VALUE. 54165 TS BANKSET 44755 CS ZERO 2">045825,000275: 01,3010 54131 JOBSLP2 TS BUF +1 # HOLDS -- HIGHEST PRIORITY. 13121 TCF EJSCAN # SCAN FOR HIGHEST PRIORITY ALA ENDOFJOB. 732">045828,000278: 01,3012 00004 NUCHANG2 INHINT # QUICK... DON'T LET NEWJOB CHANGE TO +0. 10067 CCS NEWJOB 13017 TCF +3 # NEWJOB STILL PNZ 00003 RELINT # NEW JOB HAS CHANGED TO +0. WAKE UP JOB 13217 TCF ADVAN +2 # VIA NUDIRECT. (VERY RARE CASE.) 34752 CAF TWO 00006 EXTEND 05011 WOR DSALMOUT # TURN ON ACTIVITY LIGHT 52165 DXCH LOC # AND SAVE ADDRESS INFO FOR BENEFIT OF 12713 TCF CHANJOB +4 # POSSIBLE SLEEPINT JOB. # Page 1110 # TO WAKE UP A JOB, EACH CORE SET IS FOUND TO LOCATE ALL JOBS WHICH ARE ASLEEP. IF THE FCADR IN THE # LOC REGISTER OF ANY SUCH JOB MATCHES THAT SUPPLIED BY THE CALLER, THAT JOB IS AWAKENED. IF NO JOB IS FOUND, # LOCCTR IS SET TO -1 AND NO FURTHER ACTION TAKES PLACE. 532">045845,000295: 01,3024 54061 JOBWAKE2 TS EXECTEM1 34755 CAF ZERO # BEGIN CORE SET SCAN 54064 TS LOCCTR 32635 CAF NO.CORES 534">045849,000299: 01,3030 54062 JOBWAKE4 TS EXECTEM2 50064 INDEX LOCCTR 10167 CCS PRIORITY 13036 TCF JOBWAKE3 # ACTIVE JOB -- CHECK NEXT CORE SET. 3">045853,000303: 01,3034 00014 COREINC DEC 12 B-14 # 12 REGISTERS PER CORE SET. 13045 TCF WAKETEST # SLEEPING JOB -- SEE IF CADR MATCHES. 533">045856,000306: 01,3036 33034 JOBWAKE3 CAF COREINC 26064 ADS LOCCTR 10062 CCS EXECTEM2 13030 TCF JOBWAKE4 44753 CS ONE # EXIT IF SLEEPIN JOB NOT FOUND. 54064 TS LOCCTR 15160 TCF ENDFIND 354">045864,000314: 01,3045 40065 WAKETEST CS NEWLOC 50064 INDEX LOCCTR 60164 AD LOC 00006 EXTEND 13053 BZF +2 # IF MATCH. 13036 TCF JOBWAKE3 # EXAMINE NEXT CORE SET IF NO MATCH. 50064 INDEX LOCCTR # RE-COMPLEMENT PRIORITY TO SHOW JOB AWAKE 40167 CS PRIORITY 54063 TS NEWPRIO 50064 INDEX LOCCTR 54167 TS PRIORITY 44350 CS FBANKMSK # MASK UP THE 2CADR OF THE WAKE ADDRESS 70065 MASK NEWLOC # USING THE CADR IN NEWLOC AND THE EBANK 64741 AD 2K # HALF OF BBANK SAVED IN BANKSET. 56065 XCH NEWLOC 74350 MASK FBANKMSK 50064 INDEX LOCCTR 60165 AD BANKSET 54066 TS NEWLOC +1 10064 CCS LOCCTR # SPECIAL TREATMENT IF THIS JOB WAS 12662 TCF SETLOC # ALREADY IN THE RUN (0) POSITION. 12652 TCF SPECTEST # Page 1111 # PRIORITY CHANGE. CHANGE THE CONTENTS OF PRIORITY AND SCAN FOR THE JOB OF HIGHEST PRIORITY. 2">045893,000343: 01,3073 54164 PRIOCH2 TS LOC 34755 CAF ZERO # SET FLAG TO TELL ENDJOB SCANNER IF THIS 54130 TS BUF # JOB IS STILL HIGHEST PRIORITY. 35004 CAF LOW9 70167 MASK PRIORITY 60063 AD NEWPRIO 54167 TS PRIORITY 40000 COM 13010 TCF JOBSLP2 # AND TO EJSCAN. # Page 1112 # RELEASE THIS CORE SET AND VAC AREA AND SCAN FOR THE JOB OF HIGHEST ACTIVE PRIORITY. 1">045906,000356: 01,3104 00004 ENDJOB1 INHINT 44755 CS ZERO 54131 TS BUF +1 56167 XCH PRIORITY 75004 MASK LOW9 54001 TS L 45164 CS FAKEPRET 60001 AD L 00006 EXTEND 63121 BZMF EJSCAN # NOVAC ENDOFJOB 10001 CCS L 50000 INDEX A 54000 TS 0 >045923,000373: 01,3121 10203 EJSCAN CCS PRIORITY +12D 03172 TC EJ1 05675 TC CCSHOLE 13125 TCF +1 10217 CCS PRIORITY +24D # EXAMINE EACH PRIORITY REGISTER TO FIND 03172 TC EJ1 # THE JOB OF HIGHEST ACTIVE PRIORITY. 05675 TC CCSHOLE 13131 TCF +1 10233 CCS PRIORITY +36D 03172 TC EJ1 >045935,000385: 01,3133 67610 -CCSPR -CCS PRIORITY 13135 TCF +1 10247 CCS PRIORITY +48D 03172 TC EJ1 05675 TC CCSHOLE 13141 TCF +1 10263 CCS PRIORITY +60D 03172 TC EJ1 05675 TC CCSHOLE 13145 TCF +1 10277 CCS PRIORITY +72D 03172 TC EJ1 05675 TC CCSHOLE 13151 TCF +1 10313 CCS PRIORITY +84D # Page 1113 03172 TC EJ1 05675 TC CCSHOLE 13155 TCF +1 # Page 1114 # EVALUATE THE RESULTS OF THE SCAN. 10131 CCS BUF +1 # SEE IF THERE ARE ANY ACTIVE JOBS WAITING 05675 TC CCSHOLE 05675 TC CCSHOLE 13162 TCF +2 13207 TCF DUMMYJOB 10130 CCS BUF # BUF IS ZERO IS THIS IS A PRIOCHNG AND 13165 TCF +2 # CHANGED PRIORITY IS STILL HIGHEST. 12765 TCF ENDPRCHG -1 50000 INDEX A # OTHERWISE, SE NEWJOB TO THE RELATIVE # Was CAF --- RSB 2004 27777 CA 0 -1 # ADDRESS OF THE NEW JOB'S CORE SET. 63133 AD -CCSPR 54067 TS NEWJOB 12705 TCF CHANJOB -2 01,3172 54132 EJ1 TS BUF +2 60131 AD BUF +1 # - OLD HIGH PRIORITY. 10000 CCS A 40132 CS BUF +2 13202 TCF EJ2 # NEW HIGH PRIORITY. 13200 NOOP 50002 INDEX Q 00002 TC 2 # PROCEED WITH SEARCH. 01,3202 54131 EJ2 TS BUF +1 00006 EXTEND 22130 QXCH BUF # FOR LOCATING CCS PRIORITY + X INSTR. 50130 INDEX BUF 00002 TC 2 # Page 1115 # IDLING AND COMPUTER ACTIVITY (GREEN) LIGHT MAINTENANCE. THE IDLING ROUTIEN IS NOT A JOB IN ITSELF, # BUT RATHER A SUBROUTINE OF THE EXECUTIVE. 1361 EBANK= SELFRET # SELF-CHECK STORAE IN EBANK. F42">046000,000450: 01,3207 44755 DUMMYJOB CS ZERO # SET NEWJOB TO -0 FOR IDLING. 54067 TS NEWJOB 00003 RELINT 44752 CS TWO # TURN OFF THE ACTIVITY LIGHT. 00006 EXTEND 03011 WAND DSALMOUT /a>046006,000456: 01,3215 10067 ADVAN CCS NEWJOB # IS THE NEWJOB ACTIVE? 13012 TCF NUCHANG2 # YES... ONE REQUIRING A CHANGE JOB. 34752 CAF TWO # NEW JOB ALREADY IN POSITION FOR 13226 TCF NUDIRECT # EXECUTION 31361 CA SELFRET 54001 TS L # PUT RETURN ADDRESS IN L. 33225 CAF SELFBANK 15166 TCF SUPDXCHZ +1 # AND DISPATCH JOB. 1361 EBANK= SELFRET E4B">046017,000467: 01,3225 66102 SELFBANK BBCON SELFCHK 354">046019,000469: 01,3226 00006 NUDIRECT EXTEND # TURN THE GREEN LIGHT BACK ON. 05011 WOR DSALMOUT 52165 DXCH LOC # JOBS STARTED IN THIS FASHION MUST BE 15165 TCF SUPDXCHZ BLOCK 2 # IN FIXED-FIXED SO OTHERS MAY USE. COUNT* $$/EXEC # SUPDXCHZ -- ROUTINE TO TRANSFER TO SUPEBANK. # CALLING SEQUENCE: # TCF SUPDXCHZ # WITH 2CADR OF DESIRED LOCATION IN A + l. 85A">046032,000482: 5165 56001 SUPDXCHZ XCH L # BASIC. 00006 +1 EXTEND 01007 WRITE SUPERBNK 54006 TS BBANK 00001 TC L >046038,000488: 5172 77677 NEG100 OCT 77677 Parent file is MAIN.agc