UPDATE_PROGRAM.agc
### FILE="Main.annotation"
## Copyright: Public domain.
## Filename: UPDATE_PROGRAM.agc
## Purpose: Part of the source code for Artemis (i.e., Colossus 3),
## build 072. This is for the Command Module's (CM)
## Apollo Guidance Computer (AGC), for
## Apollo 15-17.
## 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/Artemis072/
## Mod history: 2009-08-18 JL Adapted from corresponding Comanche 055 file.
## 2009-09-05 JL Fixed typos.
## 2010-02-16 JL Added SBANK= directive on page 1493.
## 2010-02-20 RSB Un-##'d this header.
## 2010-07-18 JL Fixed indentation.
## 2011-05-07 JL Flagged SBANK= workarounds for future removal.
## 2011-05-17 JL Removed all SBANK= workarounds.
## 2017-01-28 RSB Comment-text fixes identified for Luminary 69.
## 2017-02-09 RSB Proofed comment text by diff'ing vs Comanche 55
## and/or octopus/ProoferComments as most-appropriate.
## Page 1490
# PROGRAM NAME: P27
# WRITTEN BY: KILROY/ DE WOLF
#
# MOD NO: 6
# MOD BY: KILROY
# DATE: 01DEC67
#
# LOG SECTION: UPDATE PROGRAM.
#
# FUNCT. DESCR: P27 (THE UPDATE PROGRAM) PROCESSES COMMANDS AND DATA
# INSERTIONS REQUESTED BY THE GROUND VIA UPLINK.
# THE P27 PROGRAM WILL ACCEPT UPDATES
# ONLY DURING P00 FOR THE LM, AND ONLY DURING P00,
# P02, AND FRESH START FOR THE CSM
#
# CALLING SEQ: PROGRAM IS INITIATED BY UPLINK ENTRY OF VERBS 70, 71, 72 AND 73.
#
# SUBROUTINES: TESTXACT, NEWMODEX, NEWMODEX +3, GOXDSPF, BANKCALL, FINDVAC, INTPRET, INTSTALL, TPAGREE,
# INTWAKEU, ENDEXT, POSTJUMP, FALTON, NEWPHASE, PHASCHNG
#
# NORMAL EXIT: TC ENDEXT
#
# ALARM/ABORT: TC FALTON FOLLOWED BY TC ENDEXT
#
# RESTARTS: P27 IS RESTART PROTECTED IN TWO WAYS...
# 1. PRIOR TO VERIFLAG INVERSION (WHICH IS CAUSED BY THE GROUND/ASTRONAUT'S VERIFICATION OF UPDATE
# DATA BY SENDING A V33E WHEN V21N02 IS FLASHING)---
# NO PROTECTION EXCEPT PRE-P27 MODE IS RESTORED, COAST + ALIGN DOWNLIST IS SELECTED AND UPLINK
# ACTIVITY LIGHT IS TURNED OFF. (JUST AS IF A V34E WAS SENT DURING P27 DATA LOADS).
# V70,V71,V72 OR V73 WILL HAVE TO BE COMPLETELY RESENT BY USER.
# 2. AFTER VERIFLAG INVERSION (WHEN UPDATE OF THE SPECIFIED ERASABLES IS BEING PERFORMED)---
# PROTECTED AGAINST RESTARTS.
#
# DEBRIS: UPBUFF (20D) TEMP STORAGE FOR ADDRESSES AND CONTENTS.
# UPVERB (1) VERB NUMBER MINUS 70D (E.G. FOR V72, UPVERB = 72D - 70D = 2)
# UPOLDMOD(1) FOR MAJOR MODE INTERRUPTED BY P27.
# COMPNUMB(1) TOTAL NUMBER OF COMPONENTS TO BE TRANSMITTED.
# UPCOUNT (1) ACTUAL NUMBER OF COMPONENTS RECEIVED.
# UPTEMP (1) SCRATCH, BUT USUALLY CONTAINS COMPONENT NUMBER TO BE CHANGED DURING VERIFY CYCLE
#
# INPUT:
#
# ENTRY: DESCRIPTION
#
# V70EXXXXXEXXXXXE (LIFTOFF TIME INCREMENT) DOUBLE PRECISION OCTAL TIME INCREMENT, XXXXX XXXXX,
# IS ADDED TO TEPHEM, SUBTRACTED FROM AGC CLOCK(TIME2,TIME1), SUBTRACTED FROM CSM STATE
# VECTOR TIME(TETCSM) AND SUBTRACTED FROM LEM STATE VECTOR TIME (TETLEM).
# THE DP OCTAL TIME INCREMENT IS SCALED AT 2(28).
## Page 1491
#
# V71EIIEAAAAE (CONTIGUOUS BLOCK UPDATE) II-2 OCTAL COMPONENTS, XXXXX,
# XXXXXE ARE LOADED INTO ERASABLE STARTING AT ECADR, AAAA.
# XXXXXE IT IS .GE. 3 .AND. .LE. 20D.,
# AND (AAAA + II - 3) DOES NOT PRODUCE AN ADDRESS IN THE
# 9 NEXT BANK
# . SCALING IS SAME AS INTERNAL REGISTERS.
#
# V72EIIE (SCATTER UPDATE) (II-1)/2 OCTAL COMPONENTS, XXXXX, ARE
# AAAAEXXXXXE LOADED INTO ERASABLE LOCATIONS, AAAA.
# AAAAEXXXXXE II IS .GE. 3 .AND. .LE. 19D, AND MUST BE ODD.
# . SCALING IS SAME AS INTERNAL REGISTERS.
#
# V73EXXXXXEXXXXXE (OCTAL CLOCK INCREMENT) DOUBLE PRECISION OCTAL TIME
# INCREMENT XXXXX XXXXX, IS ADDED TO THE AGC CLOCK, IN
# CENTISECONDS SCALED AT (2)28.
# THIS LOAD IS THE OCTAL EQUIVALENT OF V55.
#
# OUTPUT: IN ADDITION TO THE ABOVE REGISTER LOADS, ALL UPDATES
# COMPLEMENT BIT3 OF FLAGWORD7.
#
# ADDITIONAL NOTES: VERB 71, JUST DEFINED ABOVE WILL BE USED TO PERFORM BUT NOT LIMITED TO THE FOLLOWING UPDATES --
# 1. CSM/LM STATE VECTOR UPDATE
# 2. REFSMMAT UPDATE
#
#
# THE FOLLOWING COMMENTS DELINEATE EACH SPECIAL UPDATE----
#
# 1. CSM/LM STATE VECTOR UPDATE (ALL DATA ENTRIES IN OCTAL)
#
# ENTRIES: DATA DEFINITION: SCALE FACTORS:
# V71E CONTIGUOUS BLOCK UPDATE VERB
# 21E NUMBER OF COMPONENTS FOR STATE VECTOR UPDATE
# AAAAE ECADR OF 'UPSVFLAG'
# XXXXXE STATE VECTOR IDENTIFIER: 00001 FOR CSM, 77776 FOR LEM - EARTH SPHERE OF INFLUENCE SCALING
# 00002 FOR CSM, 77775 FOR LEM - LUNAR SPHERE OF INFLUENCE SCALING
# XXXXXEXXXXXE X POSITION
# XXXXXEXXXXXE Y POSITION
# XXXXXEXXXXXE Z POSITION
# XXXXXEXXXXXE X VELOCITY
# XXXXXEXXXXXE Y VELOCITY
# XXXXXEXXXXXE Z VELOCITY
# XXXXXEXXXXXE TIME FROM AGC CLOCK ZERO
# V33E VERB 33 TO SIGNAL THAT THE STATE VECTOR IS READY TO BE STORED.
#
#
# 2. REFSMMAT (ALL DATA ENTRIES IN OCTAL)
# ENTRIES: DATA DEFINITIONS: SCALE FACTORS:
## Page 1492
# V71E CONTIGUOUS BLOCK UPDATE VERB
# 24E NUMBER OF COMPONENTS FOR REFSMMAT UPDATE
# AAAAE ECADR OF 'REFSMMAT'
# XXXXXEXXXXXE ROW 1 COLUMN 1 2(-1)
# XXXXXEXXXXXE ROW 1 COLUMN 2 2(-1)
# XXXXXEXXXXXE ROW 1 COLUMN 3 2(-1)
# XXXXXEXXXXXE ROW 2 COLUMN 1 2(-1)
# XXXXXEXXXXXE ROW 2 COLUMN 2 2(-1)
# XXXXXEXXXXXE ROW 2 COLUMN 3 2(-1)
# XXXXXEXXXXXE ROW 3 COLUMN 1 2(-1)
# XXXXXEXXXXXE ROW 3 COLUMN 2 2(-1)
# XXXXXEXXXXXE ROW 3 COLUMN 3 2(-1)
# V33E VERB 33 TO SIGNAL THAT REFSMMAT IS READY TO BE STORED.
SETLOC EXTVERBS
BANK
EBANK= TEPHEM
COUNT* $$/P27
V70UPDAT CAF UP70 # COMES HERE ON V70E
TCF V73UPDAT +1
V71UPDAT CAF UP71 # COMES HERE ON V71E
TCF V73UPDAT +1
V72UPDAT CAF UP72 # COMES HERE ON V72E
TCF V73UPDAT +1
V73UPDAT CAF UP73 # COMES HERE ON V73E
+1 TS UPVERBSV # SAVE UPVERB UNTIL IT'S OK TO ENTER P27
TC TESTXACT # GRAB DISPLAY IF AVAILABLE, OTHERWISE
# TURN *OPERATOR ERROR* ON AND TERMINATE JOB
CA MODREG # CHECK IF UPDATE ALLOWED
EXTEND # FIRST CHECK FOR MODREG = +0, -0
BZF UPDATEOK # FRESH START OR P00
CS FLAGWRD8
MASK UTBIT
CCS A
TCF +5
CS MODREG
AD OCT24
## Page 1493
EXTEND
BZF UPDATEOK
CS TWO
MASK MODREG
EXTEND
BZF +2 # P02
TCF UPERROR
UPDATEOK CAE MODREG # UPDATE ALLOWED.
TS UPOLDMOD # SAVE CURRENT MAJOR MODE
CAE UPVERBSV # SET UPVERB TO INDICATE TO P27
TS UPVERB # WHICH EXTENDED VERB CALLED IT.
CAF ONE
TS UPCOUNT # INITIALIZE UPCOUNT TO 1
TC POSTJUMP # LEAVE EXTENDED VERB BANK AND
CADR UPPART2 # GO TO UPDATE PROGRAM (P27) BANK.
UPERROR TC FALTON # TURN ON OP. ERROR
TC UPACTOFF # TURN OFF UPLINK ACT LITE
TCF ENDEXT # (RESTART GROUP NOT ESTABLISHED YET)
UP70 EQUALS ZERO
UP71 EQUALS ONE
UP72 EQUALS TWO
UP73 EQUALS THREE
SETLOC UPDATE3
BANK
COUNT* $$/P27
UPPART2 EQUALS # UPDATE PROGRAM - PART 2
TC PHASCHNG # SET RESTART GROUP 6 TO RESTORE OLD MODE
OCT 07026 # AND DOWNLIST AND EXIT IF RESTART OCCURS.
OCT 30000 # PRIORITY SAME AS CHRPRIO
EBANK= UPBUFF
2CADR UPOUT +1
CAF ONE
TS DNLSTCOD # DOWNLIST
TC NEWMODEX # SET MAJOR MODE = 27
DEC 27
## Page 1494
INDEX UPVERB # BRANCH DEPENDING ON WHETHER THE UPDATE
TCF +1 # VERB REQUIRES A FIXED OR VARIABLE NUMBER
TCF +3 # V70 FIXED. (OF COMPONENTS.
TCF OHWELL1 # V71 VARIABLE - GO GET NO. OF COMPONENTS
TCF OHWELL1 # V72 VARIABLE - GO GET NO. OF COMPONENTS
CA TWO # V73 (AND V70) FIXED
TS COMPNUMB # SET NUMBER OF COMPONENTS TO 2.
TCF OHWELL2 # GO GET THE TWO UPDATE COMPONENTS
OHWELL1 CAF ADUPBUFF # * REQUEST USER TO SEND NUMBER *
TS MPAC +2 # * OF COMPONENTS PARAMETER(II). *
+2 CAF UPLOADNV # (CK4V32 RETURNS HERE IF V32 ENCOUNTERED)
TC BANKCALL # DISPLAY A FLASHING V21N01
CADR GOXDSPF # TO REQUEST II.
TCF UPOUT4 # V34 TERMINATE UPDATE (P27) RETURN
TCF OHWELL1 +2
TC CK4V32 # DATA OR V32 RETURN
CS BIT2
AD UPBUFF # IS II (NUMBER OF COMPONENTS PARAMETER)
EXTEND # .GE. 3 AND .LE. 20D.
BZMF OHWELL1 +2
CS UPBUFF
AD UP21
EXTEND
BZMF OHWELL1 +2
CAE UPBUFF
TS COMPNUMB # SAVE II IN COMPNUMB
# UPBUFF LOADING SEQUENCE
-1 INCR UPCOUNT # INCREMENT COUNT OF COMPONENTS RECEIVED
OHWELL2 CAF ADUPBFM1 # CALCULATE LOCATION (ECADR) IN UPBUFF
AD UPCOUNT # WHERE NEXT COMPONENT SHOULD BE STORED.
+2 TS MPAC +2 # PLACE ECADR INTO R3.
+3 CAF UPLOADNV # (CK4V32 RETURNS HERE IF V32 ENCOUNTERED)
TC BANKCALL # DISPLAY A FLASHING V21N01
CADR GOXDSPF # TO REQUEST DATA.
TCF UPOUT4 # V34 TERMINATE UPDATE (P27) RETURN.
TCF OHWELL2 +3 # V33 PROCEED RETURN
TC CK4V32 # DATA OR V32 RETURN
CS UPCOUNT # HAVE WE FINISHED RECEIVING ALL
AD COMPNUMB # THE DATA WE EXPECTED.
EXTEND
BZMF UPVERIFY # YES - GO TO VERIFICATION SEQUENCE
TCF OHWELL2 -1 # NO - REQUEST ADDITIONAL DATA.
# VERIFY SEQUENCE
## Page 1495
UPVERIFY CAF ADUPTEMP # PLACE ECADR WHERE COMPONENT NO. INDEX
TS MPAC +2 # IS TO BE STORED INTO R3.
CAF UPVRFYNV # (CK4V32 RETURNS HERE IF V32 ENCOUNTERED)
TC BANKCALL # DISPLAY A FLASHING V21N02 TO REQUEST
CADR GOXDSPF # DATA CORRECTION OR VERIFICATION.
TCF UPOUT4 # V34 TERMINATE UPDATE(P27) RETURN
TCF UPSTORE # V33 DATA SENT IS GOOD. GO STORE IT.
TC CK4V32 # COMPONENT NO. INDEX OR V32 RETURN
CA UPTEMP # DOES THE COMPONENT NO. INDEX JUST SENT
EXTEND # SPECIFY A LEGAL COMPONENT NUMBER?
BZMF UPVERIFY # NO, IT IS NOT POSITIVE NONZERO
CS UPTEMP
AD COMPNUMB
AD BIT1
EXTEND
BZMF UPVERIFY # NO
CAF ADUPBFM1 # YES - BASED ON THE COMPONENT NO. INDEX
AD UPTEMP # CALCULATE THE ECADR OF LOCATION IN
TCF OHWELL2 +2 # UPBUFF WHICH USER WANTS TO CHANGE.
UPOUT4 TC POSTJUMP # COMES HERE ON V34 TO TERMINATE UPDATE
CADR UPOUT +1
# CHECK FOR VERB 32 SEQUENCE
CK4V32 CS MPAC # ON DATA RETURN FROM 'GOXDSPF'
MASK BIT6 # ON DATA RETURN FROM "GOXDSP"& THE CON-
CCS A # TENTS OF MPAC = VERB. SO TEST FOR V32.
TC Q # IT'S NOT A V32, IT'S DATA. PROCEED.
INDEX Q
TC 0 -6 # V32 ENCOUNTERED - GO BACK AND GET DATA
ADUPTEMP ADRES UPTEMP # ADDRESS OF TEMP STORAGE FOR CORRECTIONS
ADUPBUFF ADRES UPBUFF # ADDRESS OF UPDATE DATA STORAGE BUFFER
ADUPBFM1 ADRES UPBUFF -1 # SAME AS ADUPBUFF BUT LESS ONE
UPLOADNV VN 2101 # VERB 21 NOUN 01
UPVRFYNV VN 2102 # VERB 21 NOUN 02
UP21 = MD1 # DEC 21 = MAX NO OF COMPONENTS +1
UPDTPHAS EQUALS FIVE
# PRE-STORE AND FAN TO APPROPRIATE BRANCH SEQUENCE
UPSTORE EQUALS # GROUND HAS VERIFIED UPDATE. STORE DATA.
INHINT
CAE FLAGWRD7 # INVERT VERIFLAG(BIT3 OF FLAGWRD7) TO
XCH L # INDICATE TO THE GROUND(VIA DOWNLINK)
CAF VERIFBIT # THAT THE V33 (WHICH THE GROUND SENT TO
EXTEND # VERIFY THE UPDATE) HAS BEEN SUCCESSFULLY
## Page 1496
RXOR LCHAN # RECEIVED BY THE UPDATE PROGRAM
TS FLAGWRD7
TC PHASCHNG # SET RESTART GROUP 6 TO REDO THE UPDATE
OCT 04026 # DATA STORE IF A RESTART OCCURS.
INHINT # (BECAUSE PHASCHNG DID A RELINT)
CS TWO # GO TO UPFNDVAC IF INSTALL IS REQUIRED,
AD UPVERB # THAT IS, IF IT'S A V70 - V72.
EXTEND # GO TO UPEND73 IF IT'S A V73.
BZMF UPFNDVAC
TC POSTJUMP
CADR UPEND73
UPFNDVAC CAF CHRPRIO # (USE EXTENDED VERB PRIORITY)
TC FINDVAC # GET VAC AREA FOR 'CALL INTSTALL'
EBANK= TEPHEM
2CADR UPJOB # (NOTE: THIS WILL ALSO SET EBANK FOR
TC ENDOFJOB # 'TEPHEM' UPDATE BY V70)
SETLOC UPDATE2
BANK
COUNT* $$/P27
UPJOB TC INTPRET # THIS COULD BE A STATE VECTOR UPDATE--SO
CALL # WAIT(PUT JOB TO SLEEP) IF ORBIT INT(OI)
INTSTALL # IS IN PROGRESS--OR--GRAB OI AND RETURN
# TO UPWAKE IF OI IS NOT IN PROGRESS.
UPWAKE EXIT
TC PHASCHNG # RESTART PROTECT(GROUP 6)
OCT 04026
TC UPFLAG # SET INTEGRATION RESTART BIT
ADRES REINTFLG
INHINT
UPPART3 EQUALS
INDEX UPVERB # BRANCH TO THE APPROPRIATE UPDATE VERB
TCF +1 # ROUTINE TO ACTUALLY PERFORM THE UPDATE
TCF UPEND70 # V70
TCF UPEND71 # V71
TCF UPEND72 # V72
# ROUTINE TO INCREMENT CLOCK (TIME2,TIME1) WITH CONTENTS OF DP WORD AT UPBUFF.
## Page 1497
TIMEDIDL EXTEND
QXCH UPTEMP # SAVE Q FOR RETURN
CAF ZERO # ZERO AND SAVE TIME2,TIME1
ZL
DXCH TIME2
DXCH UPBUFF +18D # STORE IN CASE OF OVERFLOW
CAF UPDTPHAS # DO
TS L # A
COM # QUICK
DXCH -PHASE6 # PHASCHNG
6P5SPT1 = 6.5SPOT
TIMEDIDR INHINT
CAF ZERO
ZL # PICK UP INCREMENTER(AND ZERO
TS MPAC +2 # IT IN CASE OF RESTARTS) AND
DXCH UPBUFF +8D # STORE IT
DXCH MPAC # INTO MPAC FOR TPAGREE.
EXTEND
DCA UPBUFF +18D
DAS MPAC # FORM SUM IN MPAC
EXTEND
BZF DELTATOK # TEST FOR OVERFLOW
CAF ZERO
DXCH UPBUFF +18D # OVERFLOW, RESTORE OLD VALUE OF CLOCK
DAS TIME2 # AND TURN ON OPERATOR ERROR
TC PHASCHNG # RESTART PROTECT (GROUP 6)
OCT 04026
TC UPTEMP # GO TO ERROR EXIT
DELTATOK TC TPAGREE # FORCE SIGN AGREEMENT
DXCH MPAC
DAS TIME2 # INCREMENT TIME2,TIME1
TC PHASCHNG # RESTART PROTECT (GROUP 6)
OCT 04026
INHINT
INDEX UPTEMP # (CODED THIS WAY FOR RESTART PROTECTION)
TC 1 # NORMAL RETURN
# VERB 71 BRANCH
UPEND71 CAE UPBUFF +1 # SET EBANK
TS EBANK # AND
MASK LOW8 # CALCULATE
## Page 1498
TS UPTEMP # S-REG VALUE OF RECEIVING AREA
AD NEG3 # IN THE PROCESS OF
AD COMPNUMB # PERFORMING
EXTEND # THIS UPDATE
BZF STORLP71 # WILL WE
MASK BIT9 # OVERFLOW
CCS A # INTO THE NEXT EBANK....
TCF UPERROUT # YES
CA NEG3 # NO - CALCULATE NUMBER OF
AD COMPNUMB # WORDS TO BE STORED MINUS ONE
STORLP71 TS MPAC # SAVE NO. OF WORDS REMAINING MINUS ONE
INDEX A # TAKE NEXT UPDATE WORD FROM
CA UPBUFF +2 # UPBUFF AND
TS L # SAVE IT IN L
CA MPAC # CALCULATE NEXT
AD UPTEMP # RECEIVING ADDRESS
INDEX A
EBANK= 1400
LXCH 1400 # UPDATE THE REGISTER BY CONTENTS OF L
EBANK= TEPHEM
CCS MPAC # ARE THERE ANY WORDS LEFT TO BE STORED
TCF STORLP71 # YES
TCF UPOUT # NO - THEN EXIT UPDATE PROGRAM
UPERROUT TC FALTON # TURN ON OP ERROR, CCS CANT GET HERE
TCF UPOUT # NO - EXIT UPDATE (HERE WHEN COMPNUMB = 3)
# VERB 72 BRANCH
UPEND72 CAF BIT1 # HAVE AN ODD NO. OF COMPONENTS
MASK COMPNUMB # BEEN SENT FOR A V72 UPDATE...
CCS A
TCF +2 # YES
TCF UPERROUT # ERROR - SHOULD BE ODD NO. OF COMPONENTS
CS BIT2
AD COMPNUMB
LDLOOP72 TS MPAC # NOW PERFORM THE UPDATE
INDEX A
CAE UPBUFF +1 # PICK UP NEXT UPDATE WORD
LXCH A
CCS MPAC # SET POINTER TO ECADR (MUST BE CCS)
TS MPAC
INDEX A
CAE UPBUFF +1 # PICK UP NEXT ECADR OF REG TO BE UPDATED
TS EBANK # SET EBANK
MASK LOW8 # ISOLATE RELATIVE ADDRESS
INDEX A
EBANK= 1400
## Page 1499
LXCH 1400 # UPDATE THE REGISTER BY CONTENTS OF L
EBANK= TEPHEM
CCS MPAC # ARE WE THROUGH THE V72 UPDATE...
TCF LDLOOP72 # NO
# NORMAL FINISH OF P27
UPOUT EQUALS
TC INTWAKEU # RELEASE GRAB OF ORBITAL INTEGRATION
+1 CAE UPOLDMOD # RESTORE PRIOR P27 MODE
TC NEWMODEA
CS BIT1
AD MODREG
CCS A
CCS A
CAF TWO
TS DNLSTCOD
TC UPACTOFF # TURN OFF 'UPLINK ACTIVITY' LIGHT
TC BANKCALL # KILL GROUP 6
CADR UPKLEAN
TC ENDEXT # EXTENDED VERB EXIT
# VERB 70 BRANCH
UPEND70 EXTEND # V70 DOES THE FOLLOWING WITH DP DELTA
DCS UPBUFF # TIME IN UPBUFF
DXCH UPBUFF +8D
TC TIMEDIDL # DECREMENT AGC CLOCK
TC UPERROUT # ERROR WHILE DECREMENTING CLOCK -- EXIT
EBANK= TEPHEM
EXTEND
DCS UPBUFF # COPY DECREMENTERS FOR
DXCH UPBUFF +10D # RESTART PROTECTION
EXTEND
DCS UPBUFF
DXCH UPBUFF +12D
TC PHASCHNG # RESTART PROTECT (GROUP 6)
OCT 04026
CAF ZERO
ZL
DXCH UPBUFF +10D # DECREMENT CSM STATE VECTOR TIME
DAS TETCSM
## Page 1500
CAF ZERO
ZL
DXCH UPBUFF +12D # DECREMENT LEM STATE VECTOR TIME
DAS TETLEM
CAF ZERO
ZL
DXCH UPBUFF
DAS TEPHEM +1 # INCREMENT TP TEPHEM
ADS TEPHEM
TC PHASCHNG # RESTART PROTECT (GROUP 6)
OCT 04026
EBANK= UPBUFF
TC UPOUT # GO TO STANDARD UPDATE PROGRAM EXIT
# VERB 73 BRANCH
UPEND73 EXTEND
DCA UPBUFF
DXCH UPBUFF +8D
TC TIMEDIDL
TC FALTON
TC UPOUT +1
# ERROR SEQUENCE
SBANK= LOWSUPER
