458 lines
17 KiB
ArmAsm
458 lines
17 KiB
ArmAsm
# Copyright: Public domain.
|
|
# Filename: DOWN-TELEMETRY_PROGRAM.agc
|
|
# Purpose: Part of the source code for Comanche, build 055. It
|
|
# is part of the source code for the Command Module's
|
|
# (CM) Apollo Guidance Computer (AGC), Apollo 11.
|
|
# Assembler: yaYUL
|
|
# Reference: pp. 1093-1102
|
|
# Contact: Ron Burkey <info@sandroid.org>
|
|
# Website: http://www.ibiblio.org/apollo.
|
|
# Mod history: 2009-05-08 RSB Adapted from Colossus249/ file of same name
|
|
# and page images. Corrected various typos
|
|
# in the transcription of program comments,
|
|
# and these should be back-ported to
|
|
# Colossus249.
|
|
#
|
|
# The contents of the "Comanche055" files, in general, are transcribed
|
|
# from scanned documents.
|
|
#
|
|
# Assemble revision 055 of AGC program Comanche by NASA
|
|
# 2021113-051. April 1, 1969.
|
|
#
|
|
# This AGC program shall also be referred to as Colossus 2A
|
|
#
|
|
# Prepared by
|
|
# Massachussets Institute of Technology
|
|
# 75 Cambridge Parkway
|
|
# Cambridge, Massachusetts
|
|
#
|
|
# under NASA contract NAS 9-4065.
|
|
#
|
|
# Refer directly to the online document mentioned above for further
|
|
# information. Please report any errors to info@sandroid.org.
|
|
|
|
# Page 1093
|
|
# PROGRAM NAME -- DOWN TELEMETRY PROGRAM
|
|
# MOD NO. -- 0 TO COMPLETELY REWRITE THE DOWN TELEMETRY PROGRAM AND DOWNLINK ERASABLE DUMP PROGRAM FOR THE
|
|
# PURPOSE OF SAVING APPROXIMATELY 150 WORDS OF CORE STORAGE.
|
|
# THIS CHANGE REQUIRES AN ENTIRELY NEW METHOD OF SPECIFYING DOWNLINK LISTS. REFER TO DOWNLINK
|
|
# LISTS LOG SECTION FOR MORE DETAILS. HOWEVER THIS CHANGES WILL NOT AFFECT THE GROUND PROCESSING
|
|
# OF DOWN TELEMETRY DATA.
|
|
# MOD BY -- KILROY, SMITH, DEWITT
|
|
# DATE -- 02 OCT 67
|
|
# AUTHORS -- KILROY, SMITH, DWWITT, DEWOLF, FAGIN
|
|
# LOG SECTION -- DOWN-TELEMETRY PROGRAM
|
|
#
|
|
# FUNCTIONAL DESCRIPTION -- THIS ROUTINE IS INITIATED BY TELEMETRY END
|
|
# PULSE FROM THE DOWNLINK TELEMETRY CONVERTER. THIS PULSE OCCURS
|
|
# AT 50 TIMES PER SEC (EVERY 20 MS) THEREFORE DODOWNTM IS
|
|
# EXECUTED AT THESE RATES. THIS ROUTINE SELECTS THE APPROPRIATE
|
|
# AGC DATA TO BE TRANSMITTED DOWNLINK AND LOADS IT INTO OUTPUT
|
|
# CHANNELS 34 AND 35. THE INFORMATION IS THEN GATED OUT FROM THE
|
|
# LGC IN SERIAL FASHION.
|
|
#
|
|
# THIS PROGRAM IS CODED FOR A 2 SECOND DOWNLIST. SINCE DOWNRUPTS
|
|
# OCCUR EVERY 20 MS AND 2 AGC COMPUTER WORDS CAN BE PLACED IN
|
|
# CHANNELS 34 AND 35 DURING EACH DOWNRUPT THE PROGRAM IS CAPABLE
|
|
# OF SENDING 200 AGC WORDS EVERY 2 SECONDS.
|
|
#
|
|
# CALLING SEQUENCE -- NONE
|
|
# PROGRAM IS ENTERED VIA TCF DODOWNTM WHICH IS EXECUTED AS A
|
|
# RESULT OF A DOWNRUPT. CONTROL IS RETURNED VIA TCF RESUME WHICH
|
|
# IN EFFECT IS A RESUME.
|
|
#
|
|
# SUBROUTINES CALLED -- NONE
|
|
#
|
|
# NORMAL EXIT MODE -- TCF RESUME
|
|
#
|
|
# ALARM OR ABORT EXIT MODE -- NONE
|
|
#
|
|
# RESTART PROTECTION:
|
|
# ON A FRESH START AND RESTART THE `STARTSUB' SUBROUTINE WILL INITIALIZE THE DOWNLIST POINTER (ACTUALLY
|
|
# DNTMGOTO) TO THE BEGINNING OF THE CURRENT DOWNLIST (I.E., CURRENT CONTENTS OF DNLSTADR). THIS HAS THE
|
|
# EFFECT OF IGNORING THE REMAINDER OF THE DOWNLIST WHICH THE DOWN-TELEMETRY PROGRAM WAS WORKING ON WHEN
|
|
# THE RESTART (OR FRESH START) OCCURRED AND RESUME DOWN TELEMETRY FROM THE BEGINNING OF THE CURRENT
|
|
# DOWNLIST.
|
|
#
|
|
# ALSO OF INTEREST IS THE FACT THAT ON A RESTART THE AGC WILL ZERO DOWNLINK CHANNELS 13, 34 AND 35.
|
|
#
|
|
# DOWNLINK LIST SELECTION:
|
|
# THE APPROPRIATE DOWNLINK LISTS ARE SELECTED BY THE FOLLOWING:
|
|
# 1. FRESH START
|
|
# 2. V37EXXE WHERE XX = THE MAJOR MODE BEING SELECTED.
|
|
# 3. UPDATE PROGRAM (P27)
|
|
# 4. NON-V37 SELECTABLE TYPE PROGRAMS (E.G., AGS INITIALIZATION (SUNDANCE, LUMINARY) AND P61-P62
|
|
# TRANSITIONS (COLOSSUS) ETC.).
|
|
#
|
|
# DOWNLINK LIST RULES AND LIMITATIONS:
|
|
# READ SECTION(S) WHICH FOLLOW `DEBRIS' WRITEUP.
|
|
#
|
|
# OUTPUT -- EVERY 2 SECONDS 100 DOUBLE PRECISION WORDS (I.E., 200 LGC
|
|
# COMPUTER WORDS) ARE TRANSMITTED VIA DOWNLINK.
|
|
#
|
|
# ERASABLE INITIALIZATION REQUIRED -- NONE
|
|
# `DNTMGOTO' AND `DNLSTADR' ARE INITIALIZED BY THE FRESH START PROGRAM.
|
|
#
|
|
# DEBRIS (ERASABLE LOCATIONS DESTROYED BY THIS PROGRAM) --
|
|
# LDATALST, DNTMBUFF TO DNTMBUFF +21D, TMINDEX, DNQ.
|
|
# Page 1094
|
|
# (No source on this page of the original assembly listing.)
|
|
|
|
# Page 1095
|
|
# DODOWNTM IS ENTERED EVERY 20 MS BY AN INTERRUPT TRIGGERED BY THE
|
|
# RECEIPT OF AN ENDPULSE FROM THE SPACECRAFT TELEMETRY PROGRAMMER.
|
|
#
|
|
# NOTES REGARDING DOWNLINK LISTS ASSOCIATED WITH THIS PROGRAM:
|
|
# 1. DOWNLISTS. DOWNLISTS MUST BE COMPILED IN THE SAME BANK AS THE
|
|
# DOWN-TELEMETRY PROGRAM. THIS IS DONE FOR EASE OF CODING, FASTER
|
|
# EXECUTION.
|
|
# 2. EACH DOWNLINK LIST CONSISTS OF A CONTROL LIST AND A NUMBER OF
|
|
# SUBLISTS.
|
|
# 3. A SUBLIST REFERS TO A SNAPSHOT OR DATA COMMON TO THE SAME OR OTHER
|
|
# DOWNLINK LISTS. ANY SUBLIST CONTAINING COMMON DATA NEEDS TO BE
|
|
# CODED ONLY ONCE FOR THE APPLICABLE DOWNLINK LISTS.
|
|
# 4. SNAPSHOT SUBLISTS REFER SPECIFICALLY TO HOMOGENEOUS DATA WHICH MUST BE
|
|
# SAVED IN A BUFFER DURING ONE DOWNRUPT.
|
|
# 5. THE 1DNADR FOR THE 1ST WORD OF SNAPSHOT DATA IS FOUND AT THE END
|
|
# OF EACH SNAPSHOT SUBLIST, SINCE THE PROGRAM CODING SENDS THIS DP WORD
|
|
# IMMEDIATELY AFTER STORING THE OTHERS IN THE SNAPSHOT BUFFER.
|
|
# 6. ALL LISTS ARE COMBINATIONS OF CODED ERASABLE ADDRESS CONSTANTS
|
|
# CREATED FOR THE DOWNLIST PROGRAM.
|
|
# A. 1DNADR 1-WORD DOWNLIST ADDRESS.
|
|
# SAME AS ECADR, BUT USED WHEN THE WORD ADDRESSED IS THE LEFT
|
|
# HALF OF A DOUBLE-PRECISION WORD FOR DOWN TELEMETRY.
|
|
# B. 2DNADR - 6DNADR N-WORD DOWNLIST ADDRESS, N = 2 - 6.
|
|
# SAME AS 1DNADR, BUT WITH THE 4 UNUSED BITS OF THE ECADR FORMAT
|
|
# FILLED IN WITH 0001-0101. USED TO POINT TO A LIST OF N DOUBLE-
|
|
# PRECISION WORDS, STORED CONSECUTIVELY, FOR DOWN TELEMETRY.
|
|
# C. DNCHAN DOWNLIST CHANNEL ADDRESS.
|
|
# SAME AS 1DNADR, BUT WITH PREFIX BITS 0111. USED TO POINT TO
|
|
# A PAIR OF CHANNELS FOR DOWN TELEMETRY.
|
|
# D. DNPTR DOWN-TELEMETRY SUBLIST POINTER.
|
|
# SAME AS CAF BUT TAGGES AS A CONSTANT. USED IN CONTROL LIST TO POINT TO A SUBLIST.
|
|
# CAUTION --- A DNPTR CANNOT BE USED IN A SUBLIST.
|
|
# 7. THE WORD ORDER CODE IS SET TO ZERO AT THE BEGINNING OF EACH DOWNLIST (I.E., CONTROL LIST) AND WHEN
|
|
# A `1DNADR TIME2' IS DETECTED IN THE CONTROL LIST (ONLY).
|
|
# 8. IN THE SNAPSHOT SUBLIST ONLY, THE DNADR'S CANNOT POINT TO THE FIRST WORD OF ANY EBANK.
|
|
#
|
|
# DOWNLIST LIST RESTRICTIONS:
|
|
# (THE FOLLOWING POINTS MAY BE LISTED ELSEWHERE BUT ARE LISTED HERE SO IT IS CLEAR THAT THESE THINGS CANNOT BE
|
|
# DONE)
|
|
# 1. SNAPSHOT DOWNLIST:
|
|
# (A) CANNOT CONTAIN THE FOLLOWING ECADRS (I.E., 1DNADR'S): Q, 400, 1000, 1400, 2000, 2400, 3000, 3400.
|
|
# (B) CAN CONTAIN ONLY 1DNADR'S
|
|
# 2. ALL DOWNLINKED DATA (EXCEPT CHANNELS) IS PICKED UP BY A DCA SO DOWNLINK LISTS CANNOT CONTAIN THE
|
|
# EQUIVALENT OF THE FOLLOWING ECADRS (I.E., IDNADRS): 377, 777, 1377, 1777, 2377, 2777, 3377, 3777.
|
|
# (NOTE: TE TERM `EQUIVALENT' MEANT THAT THE IDNADR TO 6DNADR WILL BE PROCESSED LIKE 1 TO 6 ECADRS)
|
|
# 3. CONTROL LISTS AND SUBLISTS CANNOT HAVE ENTRIES = OCTAL 00000 OR OCTAL 77777
|
|
# Page 1096
|
|
# 4. THE `1DNADR TIME2' WHICH WILL CAUSE THE DOWNLINT PROGRAM TO SET THE WORDER CODE TO 3 MUST APPEAR IN THE
|
|
# CONTROL SECTION OF THE DOWNLIST.
|
|
# 5. `DNCHAN 0' CANNOT BE USED.
|
|
# 6. `DNPTR 0' CANNOT BE USED.
|
|
# 7. DNPTR CANNOT APPEAR IN A SUBLIST.
|
|
#
|
|
# EBANK SETTINGS
|
|
# IN THE PROCESS OF SETTING THE EBANK (WHEN PICKING UP DOWNLINK DATA) THE DOWN TELEMETRY PROGRAM PUTS
|
|
# `GARBAGE' INTO BITS15-12 OF EBANK. HUGH BLAIR-SMITH WARNS US THAT BITS15-12 OF EBANK MAY BECOME
|
|
# SIGNIFICANT SOMEDAY IN THE FUTURE. IF/WHEN THAT HAPPENS, THE PROGRAM SHOULD INSURE (BY MASKING ETC.)
|
|
# THAT BITS 15-12 OF EBANK ARE ZERO.
|
|
#
|
|
# INITIALIZATION REQUIRED -- TO INTERRUPT CURRENT LIST AND START A NEW ONE.
|
|
# 1. ADRES OF DOWNLINK LIST INTO DNLSTADR
|
|
# 2. NEGONE INTO SUBLIST
|
|
# 3. NEGONE INTO DNECADR
|
|
|
|
BANK 22
|
|
SETLOC DOWNTELM
|
|
BANK
|
|
|
|
EBANK= DNTMBUFF
|
|
|
|
COUNT 05/DPROG
|
|
|
|
DODOWNTM TS BANKRUPT
|
|
EXTEND
|
|
QXCH QRUPT # SAVE Q
|
|
CA BIT7 # SET WORD ORDER CODE TO 1. EXCEPTION: AT
|
|
EXTEND # THE BEGINNING OF EACH LIST THE WORD
|
|
WOR CHAN13 # CODE WILL BE SET BACK TO 0.
|
|
TC DNTMGOTO # GOTO APPROPRIATE PHASE OF PROGRAM
|
|
|
|
DNPHASE1 CA NEGONE # INITIALIZE ALL CONTROL WORDS
|
|
TS SUBLIST # WORDS TO MINUS ONE
|
|
TS DNECADR
|
|
CA LDNPHAS2 # SET DNTMGOTO = 0 ALL SUSEQUENT DOWRUPTS
|
|
TS DNTMGOTO # GO TO DNPHASE2
|
|
TCF NEWLIST
|
|
DNPHASE2 CCS DNECADR # SENDING OF DATA IN PROGRESS
|
|
DODNADR TC FETCH2WD # YES -- THEN FETCH THE NEXT 2 SP WORDS
|
|
MINTIME2 -1DNADR TIME2 # NEGATIVE OF TIME2 1DNADR
|
|
TCF +1 # (ECADR OF 3776 + 74001 = 77777)
|
|
|
|
CCS SUBLIST # IS THE SUBLIST IN CONTROL
|
|
# Page 1097
|
|
TCF NEXTINSL # YES
|
|
DNADRDCR OCT 74001 # DNADR COUNT AND ECADR DECREMENTER
|
|
|
|
CHKLIST CA CTLIST
|
|
EXTEND
|
|
BZMF NEWLIST # IT WILL BE NEGATIVE AT END OF LIST
|
|
TCF NEXTINCL
|
|
NEWLIST INDEX DNLSTCOD
|
|
CA DNTABLE # INITIALIZE CTLIST WITH
|
|
TS CTLIST # STARTING ADDRESS OF NEW LIST
|
|
CS DNLSTCOD
|
|
TCF SENDID +3
|
|
NEXTINCL INDEX CTLIST
|
|
CA 0
|
|
CCS A
|
|
INCR CTLIST # SET POINTER TO PICK UP NEXT CTLIST WORD
|
|
TCF +4 # ON NEXT ENTRY TO PROG. (A SHOULD NOT =0)
|
|
XCH CTLIST # SET CTLIST TO NEGATIVE AND PLACE(CODING)
|
|
COM # UNCOMPLEMENTED DNADR INTO A. (FOR LA)
|
|
XCH CTLIST # (ST IN )
|
|
+4 INCR A # (CTLIST)
|
|
TS DNECADR # SAVE DNADR
|
|
AD MINTIME2 # TEST FOR TIME2 (NEG. OF ECADR)
|
|
CCS A
|
|
TCF SETWO +1 # DON'T SET WORD ORDER CODE
|
|
MINB1314 OCT 47777 # MINUS BIT 13 AND 14 (CAN'T GET HERE)
|
|
TCF SETWO +1 # DON'T SET WORD ORDER CODE
|
|
SETWO TC WOZERO # GO SET WORD ORDER CODE TO ZERO.
|
|
+1 CA DNECADR # RELOAD A WITH THE DNADR.
|
|
+2 AD MINB1314 # IS THIS A REGULAR DNADR?
|
|
EXTEND
|
|
BZMF FETCH2WD # YES. (A MUST NEVER BE ZERO)
|
|
AD MINB12 # NO. IS IT A POINTER (DNPTR) OR A
|
|
EXTEND # CHANNEL(DNCHAN)
|
|
BZMF DODNPTR # IT'S A POINTER. (A MUST NEVER BE ZERO)
|
|
|
|
DODNCHAN TC 6 # (EXECUTED AS EXTEND) IT'S A CHANNEL
|
|
INDEX DNECADR
|
|
INDEX 0 -4000 # (EXECUTED AS READ)
|
|
TS L
|
|
TC 6 # (EXECUTED AS EXTEND)
|
|
INDEX DNECADR
|
|
INDEX 0 -4001 # (EXECUTED AS READ)
|
|
TS DNECADR # SET DNECADR
|
|
CA NEGONE # TO MINUS
|
|
XCH DNECADR # WHILE PRESERVING A.
|
|
TCF DNTMEXIT # GO SEND CHANNELS
|
|
|
|
WOZERO CS BIT7
|
|
EXTEND
|
|
# Page 1098
|
|
WAND CHAN13 # SET WORD ORDER CODE TO ZERO
|
|
TC Q # RETURN TO CALLER
|
|
|
|
DODNPTR INDEX DNECADR # DNECADR CONTAINS ADRES OF SUBLIST
|
|
0 0 # CLEAR AND ADD LIST ENTRY INTO A.
|
|
CCS A # IS THIS A SNAPSHOT SUBLIST
|
|
CA DNECADR # NO, IT IS A REGULAR SUBLIST.
|
|
TCF DOSUBLST # A MUST NOT BE ZERO.
|
|
|
|
XCH DNECADR # YES. IT IS A SNAPSHOT SUBLIST.
|
|
TS SUBLIST # C(DNECADR) INTO SUBLIST
|
|
CAF ZERO # A INTO A
|
|
XCH TMINDEX # (NOTE: TMINDEX = DNECADR)
|
|
|
|
# THE FOLLOWING CODING (FROM SNAPLOOP TO SNAPEND) IS FOR THE PURPOSE OF TAKING A SNAPSHOT OF 12 DP REGISTERS.
|
|
# THIS IS DONE BY SAVING 11 DP REGISTERS IN DNTMBUFF AND SENDING THE FIRST DP WORD IMMEDIATELY.
|
|
# THE SNAPSHOT PROCESSING IS THE MOST TIME CONSUMING AND THEREFORE THE CODING AND LIST STRUCTURE WERE DESIGNED
|
|
# TO MINIMIZE TIME. THE TIME OPTIMIZATION RESULTS IN RULES UNIQUE TO THE SNAPSHOT PORTION OF THE DOWNLIST.
|
|
# THESE RULES ARE ......
|
|
# 1. ONLY 1DNADR'S CAN APPEAR IN THE SNAPSHOT SUBLIST
|
|
# 2. THE 1DNADR'S CANNOT REFER TO THE FIRST LOCATION IN ANY BANK.
|
|
|
|
SNAPLOOP TS EBANK # SET EBANK
|
|
MASK LOW8 # ISOLATE RELATIVE ADDRESS
|
|
EXTEND
|
|
INDEX A
|
|
EBANK= 1401
|
|
DCA 1401 # PICK UP 2 SNAPSHOT WORDS.
|
|
EBANK= DNTMBUFF
|
|
INDEX TMINDEX
|
|
DXCH DNTMBUFF # STORE 2 SNAPSHOT WORDS IN BUFFER
|
|
INCR TMINDEX # SET BUFFER INDEX FOR NEXT 2 WORDS.
|
|
INCR TMINDEX
|
|
SNAPAGN INCR SUBLIST # SET POINTER TO NEXT 2 WORDS OF SNAPSHOT
|
|
INDEX SUBLIST
|
|
0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
|
|
CCS A # TEST FOR LAST TWO WORDS OF SNAPSHOT.
|
|
TCF SNAPLOOP # NOT LAST TWO.
|
|
LDNPHAS2 GENADR DNPHASE2
|
|
TS SUBLIST # YES, LAST. SAVE A.
|
|
CA NEGONE # SET DNECADR AND
|
|
TS DNECADR # SUBLIST POINTERS
|
|
XCH SUBLIST # TO NEGATIVE VALUES
|
|
TS EBANK
|
|
MASK LOW8
|
|
EXTEND
|
|
INDEX A
|
|
EBANK= 1401
|
|
# Page 1099
|
|
DCA 1401 # PICK UP FIRST 2 WORDS OF SNAPSHOT.
|
|
EBANK= DNTMBUFF
|
|
SNAPEND TCF DNTMEXIT # NOW GO SEND THEM.
|
|
|
|
FETCH2WD CA DNECADR
|
|
TS EBANK # SET EBANK
|
|
MASK LOW8 # ISOLATE RELATIVE ADDRESS
|
|
TS L
|
|
CA DNADRDCR # DECREMENT COUNT AND ECADR
|
|
ADS DNECADR
|
|
EXTEND
|
|
INDEX L
|
|
EBANK= 1400
|
|
DCA 1400 # PICK UP 2 DATA WORDS
|
|
EBANK= DNTMBUFF
|
|
TCF DNTMEXIT # NOW GO SEND THEM.
|
|
|
|
DOSUBLST TS SUBLIST # SET SUBLIST POINTER
|
|
NEXTINSL INDEX SUBLIST
|
|
0 0 # = CA SSSS (SSSS = NEXT ENTRY IN SUBLIST)
|
|
CCS A # IS IT THE END OF THE SUBLIST
|
|
INCR SUBLIST # NO --
|
|
TCF +4
|
|
TS SUBLIST # SAVE A.
|
|
CA NEGONE # SET SUBLIST TO MINUS
|
|
XCH SUBLIST # RETRIEVE A.
|
|
+4 INCR A
|
|
TS DNECADR # SAVE DNADR
|
|
TCF SETWO +2 # GO USE COMMON CODING (PROBLEMS WOULD
|
|
# OCCUR IF THE PROGRAM ENCOUNTERED A
|
|
# DNPTR NOW)
|
|
|
|
DNTMEXIT EXTEND # DOWN-TELEMETRY EXIT
|
|
WRITE DNTM1 # TO SEND A + L TO CHANNELS 34 + 35
|
|
CA L # RESPECTIVELY
|
|
TMEXITL EXTEND
|
|
WRITE DNTM2
|
|
TMRESUME TCF RESUME # EXIT TELEMTRY PROGRAM VIA RESUME.
|
|
|
|
MINB12 EQUALS -1/8
|
|
DNECADR EQUALS TMINDEX
|
|
CTLIST EQUALS LDATALST
|
|
SUBLIST EQUALS DNQ
|
|
|
|
# Page 1100
|
|
# SUBROUTINE NAME -- DNDUMP
|
|
#
|
|
# FUNCTIONAL DESCRIPTION -- TO SEND (DUMP) ALL 8 BANKS OF ERASABLE STORAGE TWICE. BANKS ARE SENT ONE AT A TIME
|
|
# EACH BANK IS PRECEDED BY AN ID WORD, SYNCH BITS, ECADR AND TIME1 FOLLOWED BY THE 256D WORDS OF EACH
|
|
# EBANK. EBANKS ARE DUMPED IN ORDER (I.E., EBANK 0 FIRST, THEN EBANK1 ETC.)
|
|
#
|
|
# CALLING SEQUENCE -- THE GROUND OR ASTRONAUT BY KEYING V74E CAN INITIALIZE THE DUMP.
|
|
# AFTER KEYING IN V74E THE CURRENT DOWNLIST WILL BE IMMEDIATELY TERMINATED AND THE DOWNLINK ERASABLE DUMP
|
|
# WILL BEGIN.
|
|
#
|
|
# ONCE INITIATED THE DOWNLINK ERASABLE DUMP CAN BE TERMINATED (AND INTERRUPTED DOWNLIST REINSTATED) ONLY
|
|
# BY THE FOLLOWING:
|
|
#
|
|
# 1. A FRESH START
|
|
# 2. COMPLETION OF ALL DOWNLINK DUMPS REQUESTED (ACCORDING TO BITS SET IN DUMPCNT). NOTE THAT DUMPCNT
|
|
# CAN BE ALTERED BY A V21N01.
|
|
# 3. AND INVOLUNTARILY BY A RESTART.
|
|
#
|
|
# NORMAL EXIT MODE -- TCF DNPHASE1
|
|
#
|
|
# ALARM OR ABORT MODE -- NONE
|
|
#
|
|
# *SUBROUTINES CALLED -- NONE
|
|
#
|
|
# ERASABLE INITIALIZATION REQUIRED --
|
|
# DUMPCNT OCT 20000 IF 4 COMPLETE ERASABLE DUMPS ARE DESIRED
|
|
# DUMPCNT OCT 10000 IF 2 COMPLETE ERASABLE DUMPS ARE DESIRED
|
|
# DUMPCNT OCT 04000 IF 1 COMPLETE ERASABLE DUMP IS DESIRED
|
|
#
|
|
# DEBRIS -- DUMPLOC, DUMPSW, DNTMGOTO, EBANK, AND CENTRAL REGISTERS
|
|
#
|
|
# TIMING -- TIME (IN SECS) = ((NO.DUMPS)*(NO.EBANKS)*(WDSPEREBANK + NO.IDWDS)) / NO.WDSPERSEC
|
|
# TIME (IN SECS) = ( 4 )*( 8 )*( 256 + 4 ) / 100
|
|
# THUS TIME (IN SECS TO SEND DUMP OF ERASABLE 4 TIMES VIA DOWNLINK) = 83.2 SECONDS
|
|
#
|
|
# STRUCTURE OF ONE EBANK AS IT IS SENT BY DOWNLINK PROGRAM --
|
|
# (REMINDER -- THIS ONLY DESCRIBES ONE OF THE 8 EBANKS X 4 (DUMPS) = 32 EBANKS WHICH WILL BE SENT BY DNDUMP)
|
|
#
|
|
# DOWNLIST W
|
|
# WORD TAKEN FROM CONTENTS OF EXAMPLE O COMMENTS
|
|
# 1 ERASID 0177X 0 DOWNLIST I.D. FOR DOWNLINK ERASABLE DUMP (X=7 CSM, 6 LM)
|
|
# 2 LOWIDCOD 77340 1 DOWNLINK SYNCH BITS. (SAME ONE USED IN ALL OTHER DOWNLISTS)
|
|
# 3 DUMPLOC 13400 1 (SEE NOTES ON DUMPLOC) 1 = 3RD ERAS DUMP, 3400=ECADR OF 5TH WD
|
|
# 4 TIME1 14120 1 TIME IN CENTISECONDS
|
|
# 5 FIRST WORD OF EBANK X 03400 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1400 (ECADR 3400)
|
|
# 6 2ND WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1401 (ECADR 3401)
|
|
# 7. 3RD WORD OF EBANK X 00142 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1402 (ECADR 3402)
|
|
# .
|
|
# .
|
|
# .
|
|
# 260D 256TH WORD OF EBANK X 03777 1 IN THIS EXAMPLE THIS WORD = CONTENTS OF E7,1777 (ECADR 3777)
|
|
#
|
|
# NOTE -- DUMPLOC CONTAINS THE COUNTER AND ECADR FOR EACH WORD BEING SENT.
|
|
# THE BIT STRUCTURE OF DUMPLOC IS FOLLOW --
|
|
# X = NOT USED
|
|
# X ABC EEE RRRRRRRR ABC = ERASABLE DUMP COUNTER (I.E. ABC = 0,1,2, OR 3 WHICH MEANS THAT
|
|
# COMPLETE ERASABLE DUMP NUMBER 1,2,3, OR 4 RESPECTIVELY IS IN PROGRESS)
|
|
# EEE = EBANK BITS
|
|
# RRRRRRRR = RELATIVE ADDRESS WITHIN AN EBANK
|
|
|
|
# Page 1101
|
|
DNDUMPI CA ZERO # INITIALIZE DOWNLINK
|
|
TS DUMPLOC # ERASABLE DUMP
|
|
+2 TC SENDID # GO SEND ID AND SYNCH BITS
|
|
CA LDNDUMP1 # SET DNTMGOTO
|
|
TS DNTMGOTO # TO LOCATION FOR NEXT PASS
|
|
CA TIME1 # PLACE TIME1
|
|
XCH L # INTO L
|
|
CA DUMPLOC # AND ECADR OF THIS EBANK INTO A
|
|
TCF DNTMEXIT # SEND DUMPLOC AND TIME1
|
|
|
|
LDNDUMP ADRES DNDUMP
|
|
LDNDUMP1 ADRES DNDUMP1
|
|
|
|
DNDUMP CA TWO # INCREMENT ECADR IN DUMPLOC
|
|
ADS DUMPLOC # TO NEXT DP WORD TO BE
|
|
MASK LOW8 # DUMPED AND SAVE IT.
|
|
CCS A # IS THIS THE BEGINNING OF A NEW EBANK
|
|
TCF DNDUMP2 # NO -- THEN CONTINUE DUMPING
|
|
CA DUMPLOC # YES -- IS THIS THE END OF THE
|
|
MASK DUMPCNT # N-TH(N = 1 TO 4) COMPLETE ERASABLE
|
|
MASK PRIO34 # DUMP(BIT14 FOR 4, BIT13 FOR 2 OR BIT12
|
|
CCS A # FOR 1 COMPLETE ERASABLE DUMP(S)).
|
|
TCF DNPHASE1 # YES -- SEND DOWNLIST AGAIN
|
|
# AGAIN
|
|
TCF DNDUMPI +2 # NO -- GO BACK AND INITIALZE NEXT BANK
|
|
|
|
DNDUMP1 CA LDNDUMP # SET DNTMGOTO
|
|
TS DNTMGOTO # FOR WORDS 3 TO 256D OF CURRENT EBANK
|
|
|
|
DNDUMP2 CA DUMPLOC
|
|
TS EBANK # SET EBANK
|
|
MASK LOW8 # ISOLATE RELATIVE ADDRESS.
|
|
TS Q # (NOTE: MASK INSTRUCTION IS USED TO PICK
|
|
CA NEG0 # UP ERASABLE REGISTERS TO THAT EDITING
|
|
TS L # REGISTERS 20-23 WILL NOT BE ALTERED.)
|
|
INDEX Q
|
|
EBANK= 1400 # PICK UP LOW ORDER REGISTER OF PAIR
|
|
MASK 1401 # OF ERASABLE REGISTERS.
|
|
XCH L
|
|
INDEX Q # PICK UP HIGH ORDER REGISTER OF PAIR
|
|
MASK 1400 # OF ERASABLE REGISTERS.
|
|
EBANK= DNTMBUFF
|
|
TCF DNTMEXIT # GO SEND THEM
|
|
|
|
SENDID EXTEND # ** ENTRANCE USED BY ERASABLE DUMP PROG. **
|
|
QXCH DNTMGOTO # SET DNTMGOTO SO NEXT TIME PROG WILL GO
|
|
CAF ERASID # TO LOCATION FOLLOWING `TC SENDID'
|
|
|
|
TS L # ** ENTRANCE USED BY REGULAR DOWNLINK PG **
|
|
# Page 1102
|
|
TC WOZERO # GO SET WORD ORDER CODE TO ZERO
|
|
CAF LOWIDCOD # PLACE SPECIAL ID CODE INTO L
|
|
XCH L # AND ID BACK INTO A
|
|
TCF DNTMEXIT # SEND DOWNLIST ID CODE(S).
|
|
|
|
|
|
|