SERVICE_ROUTINES.agc
### FILE="Main.annotation"
# Copyright: Public domain.
# Filename: SERVICE_ROUTINES.agc
# Purpose: Part of the source code for Colossus build 237.
# This is for the Command Module's (CM) Apollo Guidance
# Computer (AGC), we believe for Apollo 8.
# Assembler: yaYUL
# Contact: Jim Lawton <jim DOT lawton AT gmail DOT com>
# Website: www.ibiblio.org/apollo/index.html
# Page scans: www.ibiblio.org/apollo/ScansForConversion/Colossus237/
# Mod history: 2011-04-17 JL Adapted from corresponding Colossus 249 file.
## Page 1449
BLOCK 3
SETLOC FFTAG6
BANK
COUNT 03/FLAG
UPENT2 TS L # WHICH FLAGWORD IS IT
MASK OCT7
XCH L # SAVE IN L FOR INDEXING
MASK OCT77770 # OBTAIN THE BIT INFORMATION
INHINT # PREVENT INTERUPTS
TS ITEMP1 # STORE THE BIT INFORMATION TEMPORARIALY
NDX L
CS FLAGWRD0
MASK ITEMP1
NDX L
ADS FLAGWRD0
RELINT # RELEASE INTERUPT INHIBIT
INCR Q # OBTAIN THE CORRECT RETURN ADDRESS
TC Q # RETURN
DOWNENT2 TS L # WHICH FLAGWORD IS IT
MASK OCT7
XCH L # SAVE IN L FOR INDEXING
MASK OCT77770 # OBTAIN THE BIT INFORMATION
COM # START TO PROCESS THE INFORMATION
INHINT # PREVENT INTERUPTS
NDX L
MASK FLAGWRD0
NDX L
TS FLAGWRD0
RELINT # RELEASE INTERUPT INHIBIT
INCR Q # OBTAIN THE CORRECT RETURN ADDRESS
TC Q # RETURN
OCT7 EQUALS SEVEN
BANK 10
## Page 1450
# UPFLAG AND DOWNFLAG ARE ENTIRELY GENERAL FLAG SETTING AND CLEARING SUBROUTINES. USING THEM, WHETHER OR
# NOT IN INTERRUPT, ONE MAY SET OR CLEAR ANY SINGLE, NAMED BIT IN ANY ERASABLE REGISTER, SUBJECT OF COURSE TO
# EBANK SETTING. A "NAMED" BIT, AS THE WORD IS USED HERE, IS ANY BIT WITH A NAME FORMALLY ASSIGNED BY THE YUL
# ASSEMBLER.
# AT PRESENT THE ONLY NAMED BITS ARE THOSE IN THE FLAGWORDS. ASSEMBLER CHANGES WILL MAKE IT POSSIBLE TO
# NAME ANY BIT IN ERASABLE MEMORY.
# CALLING SEQUENCES ARE AS FOLLOWS:-
# TC UPFLAG TC DOWNFLAG
# ADRES NAME OF FLAG ADRES NAME OF FLAG
# RETURN IS TO THE LOCATION FOLLOWING THE "ADRES" ABOUT .58 MS AFTER THE "TC".
# UPON RETURN A CONTAINS THE CURRENT FLAGWRD SETTING.
BLOCK 02
SETLOC FFTAG1
BANK
COUNT* $$/FLAG
UPFLAG CA Q
TC DEBIT
COM # +(15 - BIT)
EXTEND
ROR LCHAN # SET BIT
COMFLAG INDEX ITEMP1
TS FLAGWRD0
LXCH ITEMP3
RELINT
TC L
DOWNFLAG CA Q
TC DEBIT
MASK L # RESET BIT
TCF COMFLAG
DEBIT AD ONE # GET DE BITS
INHINT
TS ITEMP3
CA LOW4 # DEC15
TS ITEMP1
INDEX ITEMP3
CA 0 -1 # ADRES
TS L
CA ZERO
## Page 1451
EXTEND
DV ITEMP1 # A = FLAGWRD, L = (15 - BIT)
DXCH ITEMP1
INDEX ITEMP1
CA FLAGWRD0
TS L # CURRENT STATE
INDEX ITEMP2
CS BIT15 # -(15 - BIT)
TC Q
## Page 1452
# DELAYJOB- A GENERAL ROUTINE TO DELAY A JOB A SPECIFIC AMOUNT OF TIME BEFORE PICKING UP AGAIN.
# ENTRANCE REQUIREMENTS...
# CAF DT DELAY JOB FOR DT CENTISECS
# TC BANKCALL
# CADR DELAYJOB
BANK 06
SETLOC DLAYJOB
BANK
# THIS MUST REMAIN IN BANK 0 *****************************************
COUNT 00/DELAY
DELAYJOB INHINT
TS Q # STORE DELAY DT IN Q FOR DLY -1 IN
CAF DELAYNUM # WAITLIST
DELLOOP TS RUPTREG1
INDEX A
CA DELAYLOC # IS THIS DELAYLOC AVAILABLE
EXTEND
BZF OK2DELAY # YES
CCS RUPTREG1 # NO, TRY NEXT DELAYLOC
TCF DELLOOP
TC BAILOUT # NO AVAILABLE LOCS AVAILABLE.
OCT 1104
OK2DELAY CA TCSLEEP # SET WAITLIST IMMEDIATE RETURN
TS WAITEXIT
CA FBANK
AD RUPTREG1 # STORE BBANK FOR TASK CALL
TS L
CAF WAKECAD # STORE CADR FOR TASK CALL
TCF DLY2 -1 # DLY IS IN WAITLIST ROUTINE
TCGETCAD TC MAKECADR # GET CALLERS FCADR
INDEX RUPTREG1
TS DELAYLOC # SAVE DELAY CADRS
TC JOBSLEEP
WAKER CAF ZERO
INDEX BBANK
XCH DELAYLOC # MAKE DELAYLOC AVAILABLE
## Page 1453
TC JOBWAKE
TC TASKOVER
TCSLEEP GENADR TCGETCAD -2
WAKECAD GENADR WAKER
## Page 1454
# GENTRAN, A BLOCK TRANSFER ROUTINE.
# WRITTEN BY D. EYLES
# MOD 1 BY KERNAN UTILITYM REV 17 11/18/67
# MOD 2 BY SCHULENBERG (REMOVE RELINT) SKIPPER REV 4 2/28/68
# THIS ROUTINE IS USEFUL FOR TRANSFERRING N CONSECUTIVE ERASABLE OR FIXED QUANTITIES TO SOME OTHER N
# CONSECUTIVE ERASABLE LOCATIONS. IF BOTH BLOCKS OF DATA ARE IN SWITCHABLE EBANKS, THEY MUST BE IN THE SAME ONE.
# GENTRAN IS CALLABLE IN A JOB AS WELL AS A RUPT. THE CALLING SEQUENCE IS:
# I CA N-1 # OF QUANTITIES MINUS ONE.
# I +1 TC GENTRAN IN FIXED-FIXED.
# I +2 ADRES L STARTING ADRES OF DATA TO BE MOVED.
# I +3 ADRES M STARTING ADRES OF DUPLICATION BLOCK.
# I +4 RETURNS HERE.
# GENTRAN TAKES 25 MCT'S (300 MICROSECONDS) PER ITEM + 5 MCT'S (60 MICS) FOR ENTERING AND EXITING.
# A, L AND ITEMP1 ARE NOT PRESERVED.
BLOCK 02
SETLOC FFTAG4
BANK
EBANK= ITEMP1
COUNT* $$/TRAN
GENTRAN INHINT
TS ITEMP1 # SAVE N-1.
INDEX Q # C(Q) = ADRES L.
AD 0 # ADRES (L + N - 1).
INDEX A
CA 0 # C(ABOVE).
TS L # SAVE DATA.
CA ITEMP1
INDEX Q
AD 1 # ADRES (M + N - 1).
INDEX A
LXCH 0 # STUFF IT.
CCS ITEMP1 # LOOP UNTIL N-1 = 0.
TCF GENTRAN +1
TCF Q+2 # RETURN TO CALLER.
## Page 1455
# B5OFF ZERO BIT 5 OF EXTVBACT, WHICH IS SET BY TESTXACT.
# MAY BE USED AS NEEDED BY ANY EXTENDED VERB WHICH HAS DONE TESTXACT
COUNT* $$/EXTVB
B5OFF CS BIT5
MASK EXTVBACT
TS EXTVBACT
TC ENDOFJOB
## Page 1456
# SUBROUTINES TO TURNOFF AND TURN ON TRACKER FAIL LIGHT.
TRFAILOF INHINT
CS OCT40200 # TURN OFF TRACKER LIGHT
MASK DSPTAB +11D
AD BIT15
TS DSPTAB +11D
CS OPTMODES # TO INSURE THAT OCDU FAIL WILL GO ON
MASK BIT7 # AGAIN IF IT WAS ON IN ADDITION TO
ADS OPTMODES # TRACKER FAIL.
REQ RELINT
TC Q
TRFAILON INHINT
CS DSPTAB +11D # TURN ON
MASK OCT40200
ADS DSPTAB +11D
TCF REQ
