Revision b508eba08cabca570b58330e6ec8085b5ded1025 authored by Jim Lawton on 19 August 2016, 17:44:51 UTC, committed by Jim Lawton on 19 August 2016, 17:44:51 UTC
1 parent bf4037d
SERVICE_ROUTINES.agc
# Copyright: Public domain.
# Filename: SERVICE_ROUTINES.agc
# Purpose: Part of the source code for Luminary 1A build 099.
# It is part of the source code for the Lunar Module's (LM)
# Apollo Guidance Computer (AGC), for Apollo 11.
# Assembler: yaYUL
# Contact: Ron Burkey <info@sandroid.org>.
# Website: www.ibiblio.org/apollo.
# Pages: 1374-1380
# Mod history: 2009-05-10 SN (Sergio Navarro). Started adapting
# from the Luminary131/ file of the same
# name, using Luminary099 page images.
#
# This source code has been transcribed or otherwise adapted from
# digitized images of a hardcopy from the MIT Museum. The digitization
# was performed by Paul Fjeld, and arranged for by Deborah Douglas of
# the Museum. Many thanks to both. The images (with suitable reduction
# 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
# actually created.
#
# Notations on the hardcopy document read, in part:
#
# Assemble revision 001 of AGC program LMY99 by NASA 2021112-61
# 16:27 JULY 14, 1969
# Page 1374
BANK 10
SETLOC DISPLAYS
BANK
COUNT* $$/DSPLA
UPENT2 INHINT
MASK OCT77770
TS L
CS FLAGWRD4
MASK L
ADS FLAGWRD4
JOIN RELINT
TCF Q+1
DOWNENT2 INHINT
MASK OCT77770
COM
MASK FLAGWRD4
TS FLAGWRD4
TCF JOIN
OCT7 EQUALS SEVEN
# Page 1375
# UPFLAG AND DOWNFLAG ARE ENTIRELY GENERAL FLAG SETTING AND CLEARING SUBROUTINES. USING THEM, WHETHER OR
# NOT IN INTERRUPT, ONE MAY SET OR CLEAR ANY SINGLE, NAMED BIT IN ANY ERASABLE REGISTER, SUBJECT OF COURSE TO
# EBANK SETTING. A "NAMED" BIT, AS THE WORD IS USED HERE, IS ANY BIT WITH A NAME FORMALLY ASSIGNED BY THE YUL
# ASSEMBLER.
#
# AT PRESENT THE ONLY NAMED BITS ARE THOSE IN THE FLAGWORDS. ASSEMBLER CHANGES WILL MAKE IT POSSIBLE TO
# NAME ANY BIT IN ERASABLE MEMORY.
#
# CALLING SEQUENCES ARE AS FOLLOWS :-
# TC UPFLAG TC DOWNFLAG
# ADRES NAME OF FLAG ADRES NAME OF FLAG
#
# RETURN IS TO THE LOCATION FOLLOWING THE "ADRES" ABOUT .58 MS AFTER THE "TC".
# UPON RETURN A CONTAINS THE CURRENT FLAGWRD SETTING.
BLOCK 02
SETLOC FFTAG1
BANK
COUNT* $$/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 # CET DE BITS
INHINT
TS ITEMP3
CA LOW4 # DEC15
TS ITEMP1
INDEX ITEMP3
CA 0 -1 # ADRES
TS L
CA ZERO
# Page 1376
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 1377
# 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* $$/DELAY
DELAYJOB INHINT
TS Q # STORE DELAY DT IN Q FOR DLY -1 IN
CAF DELAYNUM # WAITLIST
DELLOOP TS RUPTREG1
INDEX A
CA DELAYLOC # IS THIS DELAYLOC AVAILABLE
EXTEND
BZF OK2DELAY # YES
CCS RUPTREG1 # NO, TRY NEXT DELAYLOC
TCF DELLOOP
DXCH BUF2
TC BAILOUT1 # NO AVAILABLE LOCS.
OCT 1104
OK2DELAY CA TCSLEEP # SET WAITLIST IMMEDIATE RETURN
TS WAITEXIT
CA FBANK
AD RUPTREG1 # STORE BBANK FOR TASK CALL
TS L
CAF WAKECAD # STORE CADR FOR TASK CALL
TCF DLY2 -1 # DLY IS IN WAITLIST ROUTINE
TCGETCAD TC MAKECADR # GET CALLERS FCADR
INDEX RUPTREG1
TS DELAYLOC # SAVE DELAY CADRS
TC JOBSLEEP
WAKER CAF ZERO
INDEX BBANK
XCH DELAYLOC # MAKE DELAYLOC AVAILABLE
# Page 1378
TC JOBWAKE
TC TASKOVER
TCSLEEP GENADR TCGETCAD -2
WAKECAD GENADR WAKER
# Page 1379
# GENTRAN, A BLOCK TRANSFER ROUTINE
# WRITTEN BY D. EYLES
# MOD 1 BY KERNAN UTILITYM REV 17 11/18/67
# MOD 2 BY SCHULENBERG (REMOVE RELINT) SKIPPER REV 4 2/28/68
#
# THIS ROUTINE IS USEFUL FOR TRANSFERING N CONSECUTIVE ERASABLE OR FIXED QUANTITIES TO SOME OTHER N
# CONSECUTIVE ERASABLE LOCATIONS. IF BOTH BLOCKS OF DATA ARE IN SWITCHABLE EBANKS, THEY MUST BE IN THE SAME ONE.
#
# GENTRAN IS CALLABLE IN A JOB AS WELL AS A RUPT. THE CALLING SEQUENCE IS:
# I CA N-1 # # OF QUANTITIES MINUS ONE.
# I +1 TC GENTRAN # IN FIXED-FIXED.
# I +2 ADRES L # STARTING ADRES OF DATA TO BE MOVED.
# I +3 ADRES M # STARTING ADRES OF DUPLICATION BLOCK.
# I +4 # RETURNS HERE.
#
# GENTRAN TAKES 25 MCT'S (300 MICROSECONDS) PER ITEM + 5 MCT'S (60 MICS) FOR ENTERING AND EXITING.
# A, L, AND ITEMP1 ARE NOT PRESERVED.
BLOCK 02
SETLOC FFTAG4
BANK
EBANK= ITEMP1
COUNT* $$/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 1380
# B5OFF ZERO BIT 5 OF EXTVBACK, 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
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