missing Luminary099 files retrieved from virtualagc at https://github.com/rburkey2005/virtualagc/tree/master/Luminary099
This commit is contained in:
Gary Young
503
Luminary099/EXECUTIVE.agc
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503
Luminary099/EXECUTIVE.agc
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@ -0,0 +1,503 @@
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||||
# Copyright: Public domain.
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# Filename: EXECUTIVE.agc
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# Purpose: Part of the source code for Luminary 1A build 099.
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# It is part of the source code for the Lunar Module's (LM)
|
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# Apollo Guidance Computer (AGC), for Apollo 11.
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# Assembler: yaYUL
|
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# Contact: Ron Burkey <info@sandroid.org>.
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# Website: www.ibiblio.org/apollo.
|
||||
# Pages: 1103-1114
|
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# Mod history: 2009-05-25 RSB Adapted from the corresponding
|
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# Luminary131 file, using page
|
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# images from Luminary 1A.
|
||||
# 2011-01-06 JL Fixed pseudo-label indentation.
|
||||
# 2011-05-08 JL Removed workaround.
|
||||
|
||||
# This source code has been transcribed or otherwise adapted from
|
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# digitized images of a hardcopy from the MIT Museum. The digitization
|
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# was performed by Paul Fjeld, and arranged for by Deborah Douglas of
|
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# the Museum. Many thanks to both. The images (with suitable reduction
|
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# in storage size and consequent reduction in image quality as well) are
|
||||
# available online at www.ibiblio.org/apollo. If for some reason you
|
||||
# find that the images are illegible, contact me at info@sandroid.org
|
||||
# about getting access to the (much) higher-quality images which Paul
|
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# actually created.
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#
|
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# Notations on the hardcopy document read, in part:
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#
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# Assemble revision 001 of AGC program LMY99 by NASA 2021112-61
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# 16:27 JULY 14, 1969
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# Page 1103
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BLOCK 02
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|
||||
# TO ENTER A JOB REQUEST REQUIRING NO VAC AREA:
|
||||
|
||||
COUNT* $$/EXEC
|
||||
NOVAC INHINT
|
||||
AD FAKEPRET # LOC(MPAC +6) - LOC(QPRET)
|
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TS NEWPRIO # PRIORITY OF NEW JOB + NOVAC C(FIXLOC)
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|
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EXTEND
|
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INDEX Q # Q WILL BE UNDISTURBED THROUGHOUT.
|
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DCA 0 # 2CADR OF JOB ENTERED.
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DXCH NEWLOC
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CAF EXECBANK
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XCH FBANK
|
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TS EXECTEM1
|
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TCF NOVAC2 # ENTER EXECUTIVE BANK.
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||||
|
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# TO ENTER A JOB REQUEST REQUIREING A VAC AREA -- E.G., ALL (PARTIALLY) INTERPRETIVE JOBS.
|
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|
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FINDVAC INHINT
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TS NEWPRIO
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EXTEND
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INDEX Q
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DCA 0
|
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SPVACIN DXCH NEWLOC
|
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CAF EXECBANK
|
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XCH FBANK
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TCF FINDVAC2 # OFF TO EXECUTIVE SWITCHED-BANK.
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|
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# TO ENTER A FINDVAC WITH THE PRIORITY IN NEWPRIO TO THE 2CADR ARRIVING IN A AND L:
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# USERS OF SPVAC MUST INHINT BEFORE STORING IN NEWPRIO.
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|
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SPVAC XCH Q
|
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AD NEG2
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XCH Q
|
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TCF SPVACIN
|
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|
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# TO SUSPEND A BASIC JOB SO A HIGHER PRIORITY JOB MAY BE SERVICED:
|
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|
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CHANG1 LXCH Q
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CAF EXECBANK
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XCH BBANK
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TCF CHANJOB
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|
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# TO SUSPEND AN INTERPRETIVE JOB:
|
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|
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CHANG2 CS LOC # NEGATIVE LOC SHOWS JOB = INTERPRETIVE.
|
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# ITRACE (4) REFERS TO "CHANG2"
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TS L
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# Page 1104
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||||
+2 CAF EXECBANK
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TS BBANK
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TCF CHANJOB -1
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|
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# Page 1105
|
||||
# TO VOLUNTARILY SUSPEND A JOB UNTIL THE COMPLETION OF SOME ANTICIPATED EVENT (I/O EVENT ETC.):
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JOBSLEEP TS LOC
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CAF EXECBANK
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TS FBANK
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TCF JOBSLP1
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||||
|
||||
# TO AWAKEN A JOB PUT TO SLEEP IN THE ABOVE FASHION:
|
||||
|
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JOBWAKE INHINT
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TS NEWLOC
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CS TWO # EXIT IS VIA FINDVAC/NOVAC PROCEDURES.
|
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ADS Q
|
||||
CAF EXECBANK
|
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XCH FBANK
|
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TCF JOBWAKE2
|
||||
|
||||
# TO CHANGE THE PRIORITY OF A JOB CURRENTLY UNDER EXECUTION:
|
||||
|
||||
PRIOCHNG INHINT # NEW PRIORITY ARRIVES IN A. RETURNS TO
|
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TS NEWPRIO # CALLER AS SOON AS NEW JOB PRIORITY IS
|
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CAF EXECBANK # HIGHEST. PREPARE FOR POSSIBLE BASIC-
|
||||
XCH BBANK # STYLE CHANGE-JOB.
|
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TS BANKSET
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CA Q
|
||||
TCF PRIOCH2
|
||||
|
||||
# TO REMOVE A JOB FROM EXECUTIVE CONSIDERATIONS:
|
||||
|
||||
ENDOFJOB CAF EXECBANK
|
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TS FBANK
|
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TCF ENDJOB1
|
||||
|
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ENDFIND CA EXECTEM1 # RETURN TO CALLER AFTER JOB ENTRY
|
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TS FBANK # COMPLETE.
|
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TCF Q+2
|
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EXECBANK CADR FINDVAC2
|
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|
||||
FAKEPRET ADRES MPAC -36D # LOC(MPAC +6) - LOC(QPRET)
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|
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# Page 1106
|
||||
# LOCATE AN AVAILABLE VAC AREA
|
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|
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BANK 01
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COUNT* $$/EXEC
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FINDVAC2 TS EXECTEM1 # (SAVE CALLER'S BANK FIRST.)
|
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CCS VAC1USE
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TCF VACFOUND
|
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CCS VAC2USE
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TCF VACFOUND
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CCS VAC3USE
|
||||
TCF VACFOUND
|
||||
CCS VAC4USE
|
||||
TCF VACFOUND
|
||||
CCS VAC5USE
|
||||
TCF VACFOUND
|
||||
LXCH EXECTEM1
|
||||
CA Q
|
||||
TC BAILOUT1
|
||||
OCT 1201 # NO VAC AREAS.
|
||||
|
||||
VACFOUND AD TWO # RESERVE THIS VAC AREA BY STORING A ZERO
|
||||
ZL # IN ITS VAC USE REGISTER AND STORE THE
|
||||
INDEX A # ADDRESS OF THE FIRST WORD OF IT IN THE
|
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LXCH 0 -1 # LOW NINE BITS OF THE PRIORITY WORD.
|
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ADS NEWPRIO
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|
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NOVAC2 CAF ZERO # NOVAC ENTERS HERE. FIND A CORE SET.
|
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TS LOCCTR
|
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CAF NO.CORES # SEVEN SETS OF ELEVEN REGISTERS EACH.
|
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NOVAC3 TS EXECTEM2
|
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INDEX LOCCTR
|
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CCS PRIORITY # EACH PRIORITY REGISTER CONTAINS -0 IF
|
||||
TCF NEXTCORE # THE CORESPONDING CORE SET IS AVAILABLE.
|
||||
NO.CORES DEC 7
|
||||
TCF NEXTCORE # AN ACTIVE JOB HAS A POSITIVE PRIORITY
|
||||
# BUT A DORMANT JOB'S PRIORITY IS NEGATIVE
|
||||
|
||||
# Page 1107
|
||||
CORFOUND CA NEWPRIO # SET THE PRIORITY OF THIS JOB IN THE CORE
|
||||
INDEX LOCCTR # SET'S PRIORITY REGISTER AND SET THE
|
||||
TS PRIORITY # JOB'S PUSH-DOWN POINTER AT THE BEGINNING
|
||||
MASK LOW9 # OF THE WORK AREA AND OVERFLOW INDICATOR.
|
||||
INDEX LOCCTR
|
||||
TS PUSHLOC # OFF TO PREPARE FOR INTERPRETIVE PROGRAMS.
|
||||
|
||||
CCS LOCCTR # IF CORE SET ZERO IS BEING LOADED, SET UP
|
||||
TCF SETLOC # OVFIND AND FIXLOC IMMEDIATELY.
|
||||
TS OVFIND
|
||||
CA PUSHLOC
|
||||
TS FIXLOC
|
||||
|
||||
SPECTEST CCS NEWJOB # SEE IF ANY ACTIVE JOBS WAITING (RARE).
|
||||
TCF SETLOC # MUST BE AWAKENED OUT UNCHANGED JOB.
|
||||
TC CCSHOLE
|
||||
TC CCSHOLE
|
||||
TS NEWJOB # +0 SHOWS ACTIVE JOB ALREADY SET.
|
||||
DXCH NEWLOC
|
||||
DXCH LOC
|
||||
TCF ENDFIND
|
||||
|
||||
SETLOC DXCH NEWLOC # SET UP THE LOCATION REGISTERS FOR THIS
|
||||
INDEX LOCCTR
|
||||
DXCH LOC
|
||||
INDEX NEWJOB # THIS INDEX INSTRUCTION INSURES THAT THE
|
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CS PRIORITY # HIGHEST ACTIVE PRIORITY WILL BE COMPARED
|
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AD NEWPRIO # WITH THE NEW PRIORITY TO SEE IF NEWJOB
|
||||
EXTEND # SHOULD BE SET TO SIGNAL A SWITCH.
|
||||
BZMF ENDFIND
|
||||
CA LOCCTR # LOCCTR IS LEFT SET AT THIS CORE SET IF
|
||||
TS NEWJOB # THE CALLER WANTS TO LOAD ANY MPAC
|
||||
TCF ENDFIND # REGISTERS, ETC.
|
||||
|
||||
NEXTCORE CAF COREINC
|
||||
ADS LOCCTR
|
||||
CCS EXECTEM2
|
||||
TCF NOVAC3
|
||||
LXCH EXECTEM1
|
||||
CA Q
|
||||
TC BAILOUT1 # NO CORE SETS AVAILABLE.
|
||||
OCT 1202
|
||||
# Page 1108
|
||||
# THE FOLLOWING ROUTINE SWAPS CORE SET 0 WITH THAT WHOSE RELATIVE ADDRESS IS IN NEWJOB.
|
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|
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-2 LXCH LOC
|
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-1 CAE BANKSET # BANKSET, NOT BBANK, HAS RIGHT CONTENTS.
|
||||
CHANJOB INHINT
|
||||
EXTEND
|
||||
ROR SUPERBNK # PICK UP CURRENT SBANK FOR BBCON
|
||||
XCH L # LOC IN A AND BBCON IN L.
|
||||
+4 INDEX NEWJOB # SWAP LOC AND BANKSET.
|
||||
DXCH LOC
|
||||
DXCH LOC
|
||||
|
||||
CAE BANKSET
|
||||
EXTEND
|
||||
WRITE SUPERBNK # SET SBANK FOR NEW JOB.
|
||||
DXCH MPAC # SWAP MULTI-PURPOSE ACCUMULATOR AREAS.
|
||||
INDEX NEWJOB
|
||||
DXCH MPAC
|
||||
DXCH MPAC
|
||||
DXCH MPAC +2
|
||||
INDEX NEWJOB
|
||||
DXCH MPAC +2
|
||||
DXCH MPAC +2
|
||||
DXCH MPAC +4
|
||||
INDEX NEWJOB
|
||||
DXCH MPAC +4
|
||||
DXCH MPAC +4
|
||||
DXCH MPAC +6
|
||||
INDEX NEWJOB
|
||||
DXCH MPAC +6
|
||||
DXCH MPAC +6
|
||||
|
||||
CAF ZERO
|
||||
XCH OVFIND # MAKE PUSHLOC NEGATIVE IF OVFIND NZ.
|
||||
EXTEND
|
||||
BZF +3
|
||||
CS PUSHLOC
|
||||
TS PUSHLOC
|
||||
|
||||
DXCH PUSHLOC
|
||||
INDEX NEWJOB
|
||||
DXCH PUSHLOC
|
||||
DXCH PUSHLOC # SWAPS PUSHLOC AND PRIORITY.
|
||||
CAF LOW9 # SET FIXLOC TO BASE OF VAC AREA.
|
||||
MASK PRIORITY
|
||||
TS FIXLOC
|
||||
|
||||
CCS PUSHLOC # SET OVERFLOW INDICATOR ACCORDING TO
|
||||
CAF ZERO
|
||||
TCF ENDPRCHG -1
|
||||
|
||||
# Page 1109
|
||||
CS PUSHLOC
|
||||
TS PUSHLOC
|
||||
CAF ONE
|
||||
XCH OVFIND
|
||||
TS NEWJOB
|
||||
|
||||
ENDPRCHG RELINT
|
||||
DXCH LOC # BASIC JOBS HAVE POSITIVE ADDRESSES, SO
|
||||
EXTEND # DISPATCH WITH A DTCB.
|
||||
BZMF +2 # IF INTERPRETIVE, SET UP EBANK, ETC.
|
||||
DTCB
|
||||
# Page 1110
|
||||
COM # EPILOGUE TO JOB CHANGE FOR INTERPRETIVE
|
||||
AD ONE
|
||||
TS LOC # RESUME
|
||||
TCF INTRSM
|
||||
|
||||
# COMPLETE JOBSLEEP PREPARATIONS.
|
||||
|
||||
JOBSLP1 INHINT
|
||||
CS PRIORITY # NNZ PRIORITY SHOWS JOB ASLEEP.
|
||||
TS PRIORITY
|
||||
CAF LOW7
|
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MASK BBANK
|
||||
EXTEND
|
||||
ROR SUPERBNK # SAVE OLD SUPERBANK VALUE.
|
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TS BANKSET
|
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CS ZERO
|
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JOBSLP2 TS BUF +1 # HOLDS -- HIGHEST PRIORITY.
|
||||
TCF EJSCAN # SCAN FOR HIGHEST PRIORITY ALA ENDOFJOB.
|
||||
|
||||
NUCHANG2 INHINT # QUICK... DON'T LET NEWJOB CHANGE TO +0.
|
||||
CCS NEWJOB
|
||||
TCF +3 # NEWJOB STILL PNZ
|
||||
RELINT # NEW JOB HAS CHANGED TO +0. WAKE UP JOB
|
||||
TCF ADVAN +2 # VIA NUDIRECT. (VERY RARE CASE.)
|
||||
|
||||
CAF TWO
|
||||
EXTEND
|
||||
WOR DSALMOUT # TURN ON ACTIVITY LIGHT
|
||||
DXCH LOC # AND SAVE ADDRESS INFO FOR BENEFIT OF
|
||||
TCF CHANJOB +4 # POSSIBLE SLEEPINT JOB.
|
||||
|
||||
# Page 1111
|
||||
# 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.
|
||||
|
||||
JOBWAKE2 TS EXECTEM1
|
||||
CAF ZERO # BEGIN CORE SET SCAN
|
||||
TS LOCCTR
|
||||
CAF NO.CORES
|
||||
JOBWAKE4 TS EXECTEM2
|
||||
INDEX LOCCTR
|
||||
CCS PRIORITY
|
||||
TCF JOBWAKE3 # ACTIVE JOB -- CHECK NEXT CORE SET.
|
||||
COREINC DEC 12 # 12 REGISTERS PER CORE SET.
|
||||
TCF WAKETEST # SLEEPING JOB -- SEE IF CADR MATCHES.
|
||||
|
||||
JOBWAKE3 CAF COREINC
|
||||
ADS LOCCTR
|
||||
CCS EXECTEM2
|
||||
TCF JOBWAKE4
|
||||
CS ONE # EXIT IF SLEEPIN JOB NOT FOUND.
|
||||
TS LOCCTR
|
||||
TCF ENDFIND
|
||||
|
||||
WAKETEST CS NEWLOC
|
||||
INDEX LOCCTR
|
||||
AD LOC
|
||||
EXTEND
|
||||
BZF +2 # IF MATCH.
|
||||
TCF JOBWAKE3 # EXAMINE NEXT CORE SET IF NO MATCH.
|
||||
|
||||
INDEX LOCCTR # RE-COMPLEMENT PRIORITY TO SHOW JOB AWAKE
|
||||
CS PRIORITY
|
||||
TS NEWPRIO
|
||||
INDEX LOCCTR
|
||||
TS PRIORITY
|
||||
|
||||
CS FBANKMSK # MAKE UP THE 2CADR OF THE WAKE ADDRESS
|
||||
MASK NEWLOC # USING THE CADR IN NEWLOC AND THE EBANK
|
||||
AD 2K # HALF OF BBANK SAVED IN BANKSET.
|
||||
XCH NEWLOC
|
||||
MASK FBANKMSK
|
||||
INDEX LOCCTR
|
||||
AD BANKSET
|
||||
TS NEWLOC +1
|
||||
|
||||
CCS LOCCTR # SPECIAL TREATMENT IF THIS JOB WAS
|
||||
TCF SETLOC # ALREADY IN THE RUN (0) POSITION.
|
||||
TCF SPECTEST
|
||||
|
||||
# Page 1112
|
||||
# PRIORITY CHANGE. CHANGE THE CONTENTS OF PRIORITY AND SCAN FOR THE JOB OF HIGHEST PRIORITY.
|
||||
|
||||
PRIOCH2 TS LOC
|
||||
CAF ZERO # SET FLAG TO TELL ENDJOB SCANNER IF THIS
|
||||
TS BUF # JOB IS STILL HIGHEST PRIORITY.
|
||||
CAF LOW9
|
||||
MASK PRIORITY
|
||||
AD NEWPRIO
|
||||
TS PRIORITY
|
||||
COM
|
||||
TCF JOBSLP2 # AND TO EJSCAN.
|
||||
|
||||
# Page 1113
|
||||
# RELEASE THIS CORE SET AND VAC AREA AND SCAN FOR THE JOB OF HIGHEST ACTIVE PRIORITY.
|
||||
|
||||
ENDJOB1 INHINT
|
||||
CS ZERO
|
||||
TS BUF +1
|
||||
XCH PRIORITY
|
||||
MASK LOW9
|
||||
TS L
|
||||
|
||||
CS FAKEPRET
|
||||
AD L
|
||||
|
||||
EXTEND
|
||||
BZMF EJSCAN # NOVAC ENDOFJOB
|
||||
|
||||
CCS L
|
||||
INDEX A
|
||||
TS 0
|
||||
|
||||
EJSCAN CCS PRIORITY +12D
|
||||
TC EJ1
|
||||
TC CCSHOLE
|
||||
TCF +1
|
||||
|
||||
CCS PRIORITY +24D # EXAMINE EACH PRIORITY REGISTER TO FIND
|
||||
TC EJ1 # THE JOB OF HIGHEST ACTIVE PRIORITY.
|
||||
TC CCSHOLE
|
||||
TCF +1
|
||||
|
||||
CCS PRIORITY +36D
|
||||
TC EJ1
|
||||
-CCSPR -CCS PRIORITY
|
||||
TCF +1
|
||||
|
||||
CCS PRIORITY +48D
|
||||
TC EJ1
|
||||
TC CCSHOLE
|
||||
TCF +1
|
||||
|
||||
CCS PRIORITY +60D
|
||||
TC EJ1
|
||||
TC CCSHOLE
|
||||
TCF +1
|
||||
|
||||
CCS PRIORITY +72D
|
||||
TC EJ1
|
||||
TC CCSHOLE
|
||||
TCF +1
|
||||
|
||||
CCS PRIORITY +84D
|
||||
# Page 1114
|
||||
TC EJ1
|
||||
TC CCSHOLE
|
||||
TCF +1
|
||||
|
||||
# Page 1115
|
||||
# EVALUATE THE RESULTS OF THE SCAN.
|
||||
|
||||
CCS BUF +1 # SEE IF THERE ARE ANY ACTIVE JOBS WAITING
|
||||
TC CCSHOLE
|
||||
TC CCSHOLE
|
||||
|
||||
TCF +2
|
||||
TCF DUMMYJOB
|
||||
CCS BUF # BUF IS ZERO IS THIS IS A PRIOCHNG AND
|
||||
TCF +2 # CHANGED PRIORITY IS STILL HIGHEST.
|
||||
TCF ENDPRCHG -1
|
||||
|
||||
INDEX A # OTHERWISE, SET NEWJOB TO THE RELATIVE
|
||||
CAF 0 -1 # ADDRESS OF THE NEW JOB'S CORE SET.
|
||||
AD -CCSPR
|
||||
TS NEWJOB
|
||||
TCF CHANJOB -2
|
||||
|
||||
EJ1 TS BUF +2
|
||||
AD BUF +1 # - OLD HIGH PRIORITY.
|
||||
CCS A
|
||||
CS BUF +2
|
||||
TCF EJ2 # NEW HIGH PRIORITY.
|
||||
NOOP
|
||||
INDEX Q
|
||||
TC 2 # PROCEED WITH SEARCH.
|
||||
|
||||
EJ2 TS BUF +1
|
||||
EXTEND
|
||||
QXCH BUF # FOR LOCATING CCS PRIORITY + X INSTR.
|
||||
INDEX BUF
|
||||
TC 2
|
||||
|
||||
# Page 1116
|
||||
# IDLING AND COMPUTER ACTIVITY (GREEN) LIGHT MAINTENANCE. THE IDLING ROUTINE IS NOT A JOB IN ITSELF,
|
||||
# BUT RATHER A SUBROUTINE OF THE EXECUTIVE.
|
||||
|
||||
EBANK= SELFRET # SELF-CHECK STORAGE IN EBANK.
|
||||
|
||||
DUMMYJOB CS ZERO # SET NEWJOB TO -0 FOR IDLING.
|
||||
TS NEWJOB
|
||||
RELINT
|
||||
CS TWO # TURN OFF THE ACTIVITY LIGHT.
|
||||
EXTEND
|
||||
WAND DSALMOUT
|
||||
ADVAN CCS NEWJOB # IS THE NEWJOB ACTIVE?
|
||||
TCF NUCHANG2 # YES... ONE REQUIRING A CHANGE JOB.
|
||||
CAF TWO # NEW JOB ALREADY IN POSITION FOR
|
||||
TCF NUDIRECT # EXECUTION
|
||||
|
||||
CA SELFRET
|
||||
TS L # PUT RETURN ADDRESS IN L.
|
||||
CAF SELFBANK
|
||||
TCF SUPDXCHZ +1 # AND DISPATCH JOB.
|
||||
|
||||
EBANK= SELFRET
|
||||
SELFBANK BBCON SELFCHK
|
||||
|
||||
NUDIRECT EXTEND # TURN THE GREEN LIGHT BACK ON.
|
||||
WOR DSALMOUT
|
||||
DXCH LOC # JOBS STARTED IN THIS FASHION MUST BE
|
||||
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.
|
||||
|
||||
SUPDXCHZ XCH L # BASIC.
|
||||
+1 EXTEND
|
||||
WRITE SUPERBNK
|
||||
TS BBANK
|
||||
TC L
|
||||
|
||||
NEG100 OCT 77677
|
||||
|
||||
Reference in New Issue
Block a user