T4RUPT_PROGRAM.agc
### FILE="Main.annotation"
## Copyright: Public domain.
## Filename: T4RUPT_PROGRAM.agc
## Purpose: A section of Luminary revision 116.
## It is part of the source code for the Lunar Module's (LM)
## Apollo Guidance Computer (AGC) for Apollo 12.
## This file is intended to be a faithful transcription, except
## that the code format has been changed to conform to the
## requirements of the yaYUL assembler rather than the
## original YUL assembler.
## Reference: pp. 156-190
## Assembler: yaYUL
## Contact: Ron Burkey <info@sandroid.org>.
## Website: www.ibiblio.org/apollo/index.html
## Mod history: 2017-01-22 MAS Created from Luminary 99.
## 2017-01-26 RSB Back-ported comment-text fixes found while
## proofing corresponding Luminary 69 file.
## 2017-01-28 RSB WTIH -> WITH.
## 2017-02-08 RSB Comment-text fixes identified while proofing Artemis 72.
## 2017-03-03 RSB Transcribed, and then proofed comment-text using
## diff vs Luminary 131.
## Page 156
BANK 12
SETLOC T4RUP
BANK
EBANK= M11
COUNT* $$/T4RPT
T4RUPT TS BANKRUPT
EXTEND
QXCH QRUPT
CCS DSRUPTSW # GOES 7(-1)0 AROUND AND AROUND
TCF NORMT4 +1
TCF NORMT4
TCF QUIKDSP
NORMT4 CAF SEVEN
TS RUPTREG1
TS DSRUPTSW
BLOCK 02
SETLOC FFTAG10
BANK
COUNT* $$/T4RPT
100MRUPT = OCT37766 # (DEC 16374)
# RELTAB IS A PACKED TABLE. RELAYWORD CODE IN UPPER 4 BITS, RELAY CODE
# IN LOWER 5 BITS.
RELTAB OCT 04025
OCT 10003
OCT 14031
OCT 20033
OCT 24017
OCT 30036
OCT 34034
OCT 40023
OCT 44035
OCT 50037
OCT 54000
RELTAB11 OCT 60000
## Page 157
# SWITCHED-BANK PORTION.
BANK 12
SETLOC T4RUP
BANK
COUNT* $$/T4RPT
CDRVE CCS DSPTAB +11D
TC DSPOUT
TC DSPOUT
XCH DSPTAB +11D
MASK LOW11
TS DSPTAB +11D
AD RELTAB11
EXTEND
WRITE OUT0
TC HANG20
## Page 158
# DSPOUT PROGRAM. PUTS OUT DISPLAYS.
DSPOUTSB TS NOUT
CS ZERO
TS DSRUPTEM # SET TO -0 FOR 1ST PASS THRU DSPTAB
XCH DSPCNT
AD NEG0 # TO PREVENT +0
TS DSPCNT
DSPSCAN INDEX DSPCNT
CCS DSPTAB
CCS DSPCNT # IF DSPTAB ENTRY +, SKIP
TCF DSPSCAN -2 # IF DSPCNT +, TRY AGAIN
TCF DSPLAY # IF DSPTAB ENTRY -, DISPLAY
TABLNTH OCT 12 # DEC 10 LENGTH OF DSPTAB
CCS DSRUPTEM # IF DSRUPTEM=+0,2ND PASS THRU DSPTAB
120MRUPT DEC 16372 # (DSPCNT = 0). +0 INTO NOUT.
TS NOUT
TC Q
TS DSRUPTEM # IF DSRUPTEM=-0, 1ST PASS THRU DSPTAB
CAF TABLNTH # (DSPCNT=0). +0 INTO DSRUPTEM. PASS AGAIN
TCF DSPSCAN -1
DSPLAY AD ONE
INDEX DSPCNT
TS DSPTAB # REPLACE POSITIVELY
MASK LOW11 # REMOVE BITS 12 TO 15
TS DSRUPTEM
CAF HI5
INDEX DSPCNT
MASK RELTAB # PICK UP BITS 12 TO 15 OF RELTAB ENTRY
AD DSRUPTEM
EXTEND
WRITE OUT0
TCF Q+1
DSPOUT CCS FLAGWRD5 # IS DSKY FLAG ON
CAF ZERO # NO
TCF NODSPOUT # NO
CCS NOUT # YES
TC DSPOUTSB
TCF NODSPOUT # NO DISPLAY REQUESTS
HANG20 CS 14,11,9
ADS DSRUPTSW
CAF 20MRUPT
SETTIME4 TS TIME4
## Page 159
# THE STATUS OF THE PROCEED PUSHBUTTON IS MONITORED EVERY 120 MILLISECONDS VIA THE CHANNEL 32 BIT 14 INBIT.
# THE STATE OF THIS INBIT IS COMPARED WITH ITS STATE DURING THE PREVIOUS T4RUPT AND IS PROCESSED AS FOLLOWS.
# IF PREV ON AND NOW ON - BYPASS
# IF PREV ON AND NOW OFF - UPDATE IMODES33
# IF PREV OFF AND NOW ON - UPDATE IMODES33 AND PROCESS VIA PINBALL
# IF PREV OFF AND NOW OFF - BYPASS
# THE LOGIC EMPLOYED REQUIRES ONLY 9 MCT (APPROX. 108 MICROSECONDS) OF COMPUTER TIME WHEN NO CHANGES OCCUR.
PROCEEDE CA IMODES33 # MONITIOR FOR PROCEED BUTTON
EXTEND
RXOR CHAN32
MASK BIT14
EXTEND
BZF T4JUMP # NO CHANGE
LXCH IMODES33
EXTEND
RXOR LCHAN
TS IMODES33 # UPDATE IMODES33
MASK BIT14
CCS A
TCF T4JUMP # WAS ON - NOW OFF
CAF CHRPRIO # WAS OFF - NOW ON
TC NOVAC
EBANK= DSPCOUNT
2CADR PROCKEY
## Page 160
# JUMP TO APPROPRIATE ONCE-PER SECOND (.96 SEC ACTUALLY) ACTIVITY
T4JUMP INDEX RUPTREG1
TCF +1
TC RCSMONIT
TCF RRAUTCHK
TCF IMUMON
TCF DAPT4S
TC RCSMONIT
TCF RRAUTCHK
TCF IMUMON
TCF DAPT4S
20MRUPT = OCT37776 # (DEC 16382)
## Page 161
# ADDITIONAL ROUTINES FOR 20MS. KEYBOARD ACTIVITY
NODSPOUT EXTEND
WRITE OUT0
CAF 120MRUPT # SET FOR NEXT CDRIVE
TCF SETTIME4
QUIKDSP CAF BIT14
MASK DSRUPTSW
EXTEND
BZF QUIKOFF # WROTE LAST TIME, NOW TURN OFF RELAYS.
CCS NOUT
TC DSPOUTSB
TCF NODSPY # NOUT=0 OR BAD RETURN FROM DSPOUTSB
CS BIT14 # GOOD RETURN (WE DISPLAYED SOMETHING)
QUIKRUPT ADS DSRUPTSW
CAF 20MRUPT
TS TIME4
CAF BIT9
ADS DSRUPTSW
TC RESUME
NODSPY EXTEND
WRITE OUT0
SYNCT4 CAF 20MRUPT
ADS TIME4
CAF BIT9
ADS DSRUPTSW
CCS DSRUPTSW
TC RESUME
OCT37737 OCT 37737
TC SYNCT4
TC RESUME
QUIKOFF EXTEND
WRITE OUT0
CAF BIT14 # RESET DSRUPTSW TO SEND DISPLAY NEXT PASS
TCF QUIKRUPT
14,11,9 OCT 22400
## Page 162
# PROGRAM NAME: IMUMON
# FUNCTIONAL DESCRIPTION: THIS PROGRAM IS ENTERED EVERY 480 MS. IT DETECTS CHANGES OF THE IMU STATUS BITS IN
# CHANNEL 30 AND CALLS THE APPROPRIATE SUBROUTINES. THE BITS PROCESSED AND THEIR RELEVANT SUBROUTINES ARE:
# FUNCTION BIT SUBROUTINE CALLED
# -------- --- -----------------
# TEMP IN LIMITS 15 TLIM
# ISS TURN-ON REQUEST 14 ITURNON
# IMU FAIL 13 IMUFAIL (SETISSW)
# IMU CDU FAIL 12 ICDUFAIL (SETISSW)
# IMU CAGE 11 IMUCAGE
# IMU OPERATE 9 IMUOP
# THE LAST SAMPLED STATE OF THESE BITS IS LEFT IN IMODES30. ALSO, EACH SUBROUTINE CALLED FINDS THE NEW
# VALUE OF THE BIT IN A, WITH Q SET TO THE PROPER RETURN LOCATION, NXTIFAIL.
# CALLING SEQUENCE: T4RUPT EVERY 480 MILLISECONDS.
# JOBS OR TASKS INITIATED: NONE.
# SUBROUTINES CALLED: TLIM, ITURNON, SETISSW, IMUCAGE, IMUOP.
# ERASABLE INITIALIZATION:
# FRESH START OR RESTART WITH NO GROUPS ACTIVE: C(IMODES30) = OCT 37411.
# RESTART WITH ACTIVE GROUPS: C(IMODES30) = (B(IMODES30)AND(OCT 00035)) PLUS OCT 37400.
# THIS LEAVES IMU FAIL BITS INTACT.
# ALARMS: NONE.
# EXIT: TNONTEST.
# OUTPUT: UPDATED IMODES30 WITH CHANGES PROCESSED BY APPROPRIATE SUBROUTINE.
IMUMON CA IMODES30 # SEE IF THERE HAS BEEN A CHANGE IN THE
EXTEND # RELEVANT BITS OF CHAN 30.
RXOR CHAN30
MASK 30RDMSK
EXTEND
BZF TNONTEST # NO CHANGE IN STATUS.
TS RUPTREG1 # SAVE BITS WHICH HAVE CHANGED.
LXCH IMODES30 # UPDATE IMODES30.
EXTEND
RXOR LCHAN
TS IMODES30
CS ONE
XCH RUPTREG1
EXTEND
## Page 163
BZMF TLIM # CHANGE IN IMU TEMP.
TCF NXTIFBIT # BEGIN BIT SCAN.
-1 AD ONE # (RE-ENTERS HERE FROM NXTIFAIL.)
NXTIFBIT INCR RUPTREG1 # ADVANCE BIT POSITION NUMBER.
+1 DOUBLE
TS A # SKIP IF OVERFLOW.
TCF NXTIFBIT # LOOK FOR BIT.
XCH RUPTREG2 # SAVE OVERFLOW-CORRECTED DATA.
INDEX RUPTREG1 # SELECT NEW VALUE OF THIS BIT.
CAF BIT14
MASK IMODES30
INDEX RUPTREG1
TC IFAILJMP
NXTIFAIL CCS RUPTREG2 # PROCESS ANY ADDITIONAL CHANGES.
TCF NXTIFBIT -1
## Page 164
# PROGRAM NAME: TNONTEST.
# FUNCTIONAL DESCRIPTION: THIS PROGRAM HONORS REQUESTS FOR ISS INITIALIZATION. ISS TURN-ON (CHANNEL 30 BIT 14)
# AND ISS OPERATE (CHANNEL 30 BIT 9) REQUESTS ARE TREATED AS A PAIR AND PROCESSING TAKES PLACE .480 SECONDS
# AFTER EITHER ONE APPEARS. THIS INITIALIZATION TAKES ON ONE OF THE FOLLOWING THREE FORMS:
# 1) ISS TURN-ON: IN THIS SITUATION THE COMPUTER IS OPERATING WHEN THE ISS IS TURNED ON. NOMINALLY,
# BOTH ISS TURN-ON AND ISS OPERATE APPEAR. THE PLATFORM IS CAGED FOR 90 SECONDS AND THE ICDU'S ZEROED
# SO THAT AT THE END OF THE PROCESS THE GIMBAL LOCK MONITOR WILL FUNCTION PROPERLY.
# 2) ICDU INITIALIZATION: IN THIS CASE THE COMPUTER WAS PROBABLY TURNED ON WITH THE ISS IN OPERATE OR
# A FRESH START WAS DONE WITH THE ISS IN OPERATE. IN THIS CASE ONLY ISS OPERATE IS ON. THE ICDU'S ARE
# ZEROED SO THE GIMBAL LOCK MONITOR WILL FUNCTION. AN EXCEPTION IS IF THE ISS IS IN GIMBAL LOCK AFTER
# A RESTART, THE ICDU'S WILL NOT BE ZEROED.
# 3) RESTART WITH RESTARTABLE PROGRAM USING THE IMU: IN THIS CASE, NO INITIALIZATION TAKES PLACE SINCE
# IT IS ASSUMED THAT THE USING PROGRAM DID THE INITIALIZATION AND THEREFORE T4RUPT SHOULD NOT INTERFERE.
# IMODES30 BIT 7 IS SET = 1 BY THE FIRST BIT (CHANNEL 30 BIT 14 OR 9) WHICH ARRIVES. FOLLOWING THIS. TNONTEST IS
# ENTERED, FINDS BIT 7 = 1 BUT BIT 8 = 0, SO IT SETS BIT 8 = 1 AND EXITS. THE NEXT TIME IT FINDS BIT 8 = 1 AND
# PROCEEDS, SETTING BITS 8 AND 7 = 0. AT PROCTNON, IF ISS TURN-ON REQUEST IS PRESENT, THE ISS IS CAGED (ZERO +
# COARSE). IF ISS OPERATE IS NOT PRESENT PROGRAM ALARM 00213 IS ISSUED. AT THE END OF A 90 SECOND CAGE, BIT 2
# OF IMODES30 IS TESTED. IF IT IS = 1, ISS TURN-ON WAS NOT PRESENT FOR THE ENTIRE 90 SECONDS. IN THAT CASE, IF
# THE ISS TURN-ON REQUEST IS PRESENT THE 90 SECOND WAIT IS REPEATED, OTHERWISE NO ACTION OCCURS UNLESS A PROGRAM
# WAS WAITING FOR THE INITIALIZATION IN WHICH CASE THE PROGRAM IS GIVEN AN IMUSTALL ERROR RETURN. IF THE DELAY
# WENT PROPERLY, THE ISS DELAY OUTBIT IS SENT AND THE ICDU'S ZEROED. A TASK IS INITIATED TO REMOVE THE PIPA FAIL
# INHIBIT BIT IN 10.24 SECONDS. IF A MISSION PROGRAM WAS WAITING IT IS INFORMED VIA ENDIMU.
# AT PROCTNON, IF ONLY ISS OPERATE IS PRESENT (OPONLY), THE CDU'S ARE ZEROED UNLESS THE PLATFORM IS IN COARSE
# ALIGN (= GIMBAL LOCK HERE) OR A MISSION PROGRAM IS USING THE IMU (IMUSEFLG = 1).
# CALLING SEQUENCE: T4RUPT EVERY 480 MILLISECONDS AFTER IMUMON.
# JOBS OR TASKS INITIATED: 1) ENDTNON, 90 SECONDS AFTER CAGING STARTED. 2) ISSUP, 4 SECONDS AFTER CAGING DONE.
# 3) PFAILOK, 10.24 SECONDS AFTER INITIALIZATION COMPLETED. 4) UNZ2, 320 MILLISECONDS AFTER ZEROING
# STARTED.
# SUBROUTINES CALLED: CAGESUB, CAGESUB2, ZEROICDU, ENDIMU, IMUBAD, NOATTOFF, SETISSW, VARDELAY.
# ERASABLE INITIALIZATION: SEE IMUMON.
# ALARMS: PROGRAM ALARM 00213 IF ISS TURN-ON REQUESTED WITHOUT ISS OPERATE.
# EXIT: ENDTNON EXITS TO C33TEST. TASKS HAVING TO DO WITH INITIALIZATION EXIT AS FOLLOWS: MISSION PROGRAM
# WAITING AND INITIALIZATION COMPLETE, EXIT TO ENDIMU, MISSION PROGRAM WAITING AND INITIALIZATION FAILED, EXIT TO
# IMUBAD, IMU NOT IN USE, EXIT TO TASKOVER.
# OUTPUT: ISS INITIALIZED.
TNONTEST CS IMODES30 # AFTER PROCESSING ALL CHANGES, SEE IF IT
## Page 165
MASK BIT7 # IS TIME TO ACT ON A TURN-ON SEQUENCE.
CCS A
TCF C33TEST # NO - EXAMINE CHANNEL 33.
CAF BIT8 # SEE IF FIRST SAMPLE OR SECOND.
MASK IMODES30
CCS A
TCF PROCTNON # REACT AFTER SECOND SAMPLE.
CAF BIT8 # IF FIRST SAMPLE, SET BIT TO REACT NEXT
ADS IMODES30 # TIME.
TCF C33TEST
# PROCESS IMU TURN-ON REQUESTS AFTER WAITING 1 SAMPLE FOR ALL SIGNALS TO ARRIVE.
PROCTNON CS BITS7&8
MASK IMODES30
TS IMODES30
MASK BIT14 # SEE IF TURN-ON REQUEST.
CCS A
TCF OPONLY # OPERATE ON ONLY.
CS IMODES30 # IF TURN-ON REQUEST, WE SHOULD HAVE IMU
MASK BIT9 # OPERATE.
CCS A
TCF +3
TC ALARM # ALARM IF NOT.
OCT 213
+3 TC CAGESUB
CAF 90SECS
TC WAITLIST
EBANK= M11
2CADR ENDTNON
TCF C33TEST
RETNON CAF 90SECS
TC VARDELAY
ENDTNON CS BIT2 # RESET TURN-ON REQUEST FAIL BIT.
MASK IMODES30
XCH IMODES30
MASK BIT2 # IF IT WAS OFF, SEND ISS DELAY COMPLETE.
EXTEND
BZF ENDTNON2
CAF BIT14 # IF IT WAS ON AND TURN-ON REQUEST NOW
## Page 166
MASK IMODES30 # PRESENT, RE-ENTER 90 SEC DELAY IN WL.
EXTEND
BZF RETNON
CS FLAGWRD0 # IF IT IS NOT ON NOW, SEE IF A PROG WAS
MASK IMUSEBIT # WAITING.
CCS A
TCF TASKOVER
TC POSTJUMP
CADR IMUBAD # UNSUCCESSFUL TURN-ON.
ENDTNON2 CAF BIT15 # SEND ISS DELAY COMPLETE.
EXTEND
WOR CHAN12
TC IBNKCALL # TURN OFF NO ATT LAMP.
CADR NOATTOFF
UNZ2 TC ZEROICDU
CS BITS4&5 # REMOVE ZERO AND COARSE.
EXTEND
WAND CHAN12
CAF BIT11 # WAIT 10 SECS FOR CTRS TO FIND GIMBALS
TC VARDELAY
ISSUP CS OCT54 # REMOVE CAGING, IMU FAIL INHIBIT, AND
MASK IMODES30 # ICDUFAIL INHIBIT FLAGS.
TS IMODES30
CS BIT6 # ENABLE DAP
MASK IMODES33
TS IMODES33
CS FLAGWRD2 # TEST DRIFTFLG: IF ON, DO NOTHING BECAUSE
MASK DRFTBIT # IMUCOMP SHOULD BE ALL SET UP(RESTART
EXTEND # WITH IMUSE DOWN). IF OFF, SET DRIFTFLG
BZF +4 # AND 1/PIPADT TO GET FREEFALL IMUCOMP
ADS FLAGWRD2 # GOING (FRESH START OR ISS TURN-ON).
CA TIME1
XCH 1/PIPADT # CANNOT GET HERE IF RESTART WITH IMUSE UP
TC SETISSW # ISS WARNING MIGHT HAVE BEEN INHIBITED.
CS BIT15 # REMOVE IMU DELAY COMPLETE DISCRETE.
EXTEND
WAND CHAN12
CAF 4SECS # DONT ENABLE PROG ALARM ON PIP FAIL FOR
## Page 167
TC WAITLIST # ANOTHER 4 SECS.
EBANK= CDUIND
2CADR PFAILOK
TCF TASKOVER
OPONLY CAF BIT4 # IF OPERATE ON ONLY, AND WE ARE IN COARSE
EXTEND # ALIGN, DONT ZERO THE CDUS BECAUSE WE
RAND CHAN12 # MIGHT BE IN GIMBAL LOCK
CCS A
TCF C33TEST
CAF IMUSEBIT # OTHERWISE, ZERO THE COUNTERS.
MASK FLAGWRD0 # UNLESS SOMEONE IS USING THE IMU.
CCS A
TCF C33TEST
TC CAGESUB2 # SET TURNON FLAGS.
ISSZERO TC IBNKCALL # TURN OFF NO ATT LAMP
CADR NOATTOFF # IMU CAGE OFF ENTRY
CAF BIT5 # ISS CDU ZERO
EXTEND
WOR CHAN12
TC ZEROICDU
CAF BIT6 # WAIT 300 MS FOR AGS TO RECEIVE SIGNAL.
TC WAITLIST
EBANK= M11
2CADR UNZ2
TCF C33TEST
## Page 168
# PROGRAM NAME: C33TEST
# FUNCTIONAL DESCRIPTION: THIS PROGRAM MONITORS THREE FLIP-FLOP INBITS OF CHANNEL 33 AND CALLS THE APPROPRIATE
# SUBROUTINE TO PROCESS A CHANGE. IT IS ANALOGOUS TO IMUMON, WHICH MONITORS CHANNEL 30, EXCEPT THAT IT READS
# CHANNEL 33 WITH A WAND INSTRUCTION BECAUSE A 'WRITE' PULSE IS REQUIRED TO RESET THE FLIP-FLOPS. THE BITS
# PROCESSED AND THE SUBROUTINES CALLED ARE:
# BIT FUNCTION SUBROUTINE
# --- -------- ----------
# 13 PIPA FAIL PIPFAIL
# 12 DOWNLINK TOO FAST DNTMFAST
# 11 UPLINK TOO FAST UPTMFAST
# UPON ENTRY TO THE SUBROUTINE, THE NEW BIT STATE IS IN A.
# CALLING SEQUENCE: EVERY 480 MILLISECONDS AFTER TNONTEST.
# JOBS OR TASKS INITIATED: NONE.
# SUBROUTINES CALLED: PIPFAIL, DNTMFAST AND UPTMFAST ON BIT CHANGES.
# ERASABLE INITIALIZATION: C(IMODES33) = OCT 16000 ON A FRESH START OR RESTART, THEREFORE, THESE ALARMS WILL
# REAPPEAR IF THE CONDITIONS PERSIST.
# ALARMS: NONE.
# EXIT: GLOCKMON.
# OUTPUT: UPDATED BITS 13, 12 AND 11 OF IMODES33 WITH CHANGES PROCESSED.
C33TEST CA IMODES33 # SEE IF RELEVANT CHAN33 BITS HAVE
MASK 33RDMSK
TS L # CHANGED.
CAF 33RDMSK
EXTEND
WAND CHAN33 # RESETS FLIP-FLOP INPUTS
EXTEND
RXOR LCHAN
EXTEND
BZF GLOCKMON # ON NO CHANGE.
TS RUPTREG1 # SAVE BITS WHICH HAVE CHANGED.
LXCH IMODES33
EXTEND
RXOR LCHAN
TS IMODES33 # UPDATED IMODES33.
CAF ZERO
XCH RUPTREG1
DOUBLE
## Page 169
TCF NXTIBT +1 # SCAN FOR BIT CHANGES.
-1 AD ONE
NXTIBT INCR RUPTREG1
+1 DOUBLE
TS A # (CODING IDENTICAL TO CHAN 30).
TCF NXTIBT
XCH RUPTREG2
INDEX RUPTREG1 # GET NEW VALUE OF BIT WHICH CHANGED.
CAF BIT13
MASK IMODES33
INDEX RUPTREG1
TC C33JMP
NXTFL33 CCS RUPTREG2 # PROCESS POSSIBLE ADDITIONAL CHANGES.
TCF NXTIBT -1
## Page 170
# PROGRAM NAME: GLOCKMON
# FUNCTIONAL DESCRIPTION: THIS PROGRAM MONITORS THE CDUZ COUNTER TO DETERMINE WHETHER THE ISS IS IN GIMBAL LOCK
# AND TAKES ACTION IF IT IS. THREE REGIONS OF MIDDLE GIMBAL ANGLE (MGA) ARE USED:
# 1) ABS(MGA) LESS THAN OR EQUAL TO 70 DEGREES - NORMAL MODE.
# 2) ABS(MGA) GREATER THAN 70 DEGREES AND LESS THAN OR EQUAL TO 85 DEGREES - GIMBAL LOCK LAMP TURNED ON.
# 3) ABS(MGA) GREATER THAN 85 DEGREES - ISS PUT IN COARSE ALIGN AND NO ATT LAMP TURNED ON.
# CALLING SEQUENCE: EVERY 480 MILLISECONDS AFTER C33TEST.
# JOBS OR TASKS INITIATED: NONE.
# SUBROUTINES CALLED: 1) SETCOARS WHEN ABS(MGA) GREATER THAN 85 DEGREES AND ISS NOT IN COARSE ALIGN.
# 2) LAMPTEST BEFORE TURNING OFF GIMBAL LOCK LAMP.
# ERASABLE INITIALIZATION:
# 1) FRESH START OR RESTART WITH NO GROUPS ACTIVE: C(CDUZ) = 0, IMODES30 BIT 6 = 0, IMODES33 BIT 1 = 0.
# 2) RESTART WITH GROUPS ACTIVE: SAME AS FRESH START EXCEPT C(CDUZ) NOT CHANGED SO GIMBAL MONITOR
# PROCEEDS AS BEFORE.
# ALARMS: 1) MGA REGION (2) CAUSES GIMBAL LOCK LAMP TO BE LIT.
# 2) MGA REGION (3) CAUSES THE ISS TO BE PUT IN COARSE ALIGN AND THE NO ATT LAMP TO BE LIT IF EITHER NOT
# SO ALREADY.
GLOCKMON CCS CDUZ
TCF GLOCKCHK # SEE IF MAGNITUDE OF MGA IS GREATER THAN
TCF SETGLOCK # 70 DEGREES.
TCF GLOCKCHK
TCF SETGLOCK
GLOCKCHK AD -70DEGS
EXTEND
BZMF SETGLOCK -1 # NO LOCK.
AD -15DEGS # SEE IF ABS(MGA) GREATER THAN 85 DEGREES.
EXTEND
BZMF NOGIMRUN
CAF BIT4 # IF SO, SYSTEM SHOULD BE IN COARSE ALIGN
EXTEND # TO PREVENT GIMBAL RUNAWAY.
RAND CHAN12
CCS A
TCF NOGIMRUN
TC IBNKCALL
CADR SETCOARS
CAF SIX # ENABLE ISS ERROR COUNTERS IN 60 MS
TC WAITLIST
## Page 171
EBANK= CDUIND
2CADR CA+ECE
NOGIMRUN CAF BIT6 # TURN ON GIMBAL LOCK LAMP.
TCF SETGLOCK
-1 CAF ZERO
SETGLOCK AD DSPTAB +11D # SEE IF PRESENT STATE OF GIMBAL LOCK LAMP
MASK BIT6 # AGREES WITH DESIRED STATE BY HALF ADDING
EXTEND # THE TWO.
BZF GLOCKOK # OK AS IS.
MASK DSPTAB +11D # IF OFF, DONT TURN ON IF IMU BEING CAGED.
CCS A
TCF GLAMPTST # TURN OFF UNLESS LAMP TEST IN PROGRESS.
CAF BIT6
MASK IMODES30
CCS A
TCF GLOCKOK
GLINVERT CS DSPTAB +11D # INVERT GIMBAL LOCK LAMP.
MASK BIT6
AD BIT15 # TO INDICATE CHANGE IN DSPTAB +11D.
XCH DSPTAB +11D
MASK OCT37737
ADS DSPTAB +11D
TCF GLOCKOK
GLAMPTST TC LAMPTEST # TURN OFF UNLESS LAMP TEST IN PROGRESS.
TCF GLOCKOK
TCF GLINVERT
-70DEGS DEC -.38888 # -70 DEGREES SCALED IN HALF-REVOLUTIONS.
-15DEGS DEC -.08333
## Page 172
# PROGRAM NAME: TLIM.
# FUNCTIONAL DESCRIPTION: THIS PROGRAM MAINTAINS THE TEMP LAMP (BIT 4 OF CHANNEL 11) ON THE DSKY TO AGREE WITH
# THE TEMP SIGNAL FROM THE ISS (BIT 15 OF CHANNEL 30). HOWEVER, THE LIGHT WILL NOT BE TURNED OFF IF A LAMP TEST
# IS IN PROGRESS.
# CALLING SEQUENCE: CALLED BY IMUMON ON A CHANGE OF BIT 15 OF CHANNEL 30.
# JOBS OR TASKS INITIATED: NONE.
# SUBROUTINES CALLED: LAMPTEST.
# ERASABLE INITIALIZATION: FRESH START AND RESTART TURN THE TEMP LAMP OFF.
# ALARMS: TEMP LAMP TURNED ON WHEN IMU TEMP GOES OUT OF LIMITS.
# EXIT: NXTIFAIL.
# OUTPUT: SERVICE OF TEMP LAMP. IN A, EXCEPT FOR TLIM.
TLIM MASK POSMAX # REMOVE BIT FROM WORD OF CHANGES AND SET
TS RUPTREG2 # DSKY TEMP LAMP ACCORDINGLY.
CCS IMODES30
TCF TEMPOK
TCF TEMPOK
CAF BIT4 # TURN ON LAMP.
EXTEND
WOR DSALMOUT
TCF NXTIFAIL
TEMPOK TC LAMPTEST # IF TEMP NOW OK, DONT TURN OFF LAMP IF
TCF NXTIFAIL # LAMP TEST IN PROGRESS.
CS BIT4
EXTEND
WAND DSALMOUT # TURN OFF LAMP
TCF NXTIFAIL
## Page 173
# PROGRAM NAME: ITURNON.
# FUNCTIONAL DESCRIPTION: THIS PROGRAM IS CALLED BY IMUMON WHEN A CHANGE OF BIT 14 OF CHANNEL 30 (ISS TURN-ON
# REQUEST) IS DETECTED. UPON ENTRY, ITURNON CHECKS IF A TURN-ON DELAY SEQUENCE HAS FAILED, AND IF SO, IT EXITS.
# IF NOT, IT CHECKS WHETHER THE TURN-ON REQUEST CHANGE IS TO ON OR OFF. IF ON, IT SETS BIT7 OF IMODES30 TO 1 SO
# THAT TNONTEST WILL INITIATE THE ISS INITIALIZATION SEQUENCE. IF OFF, THE TURN-ON DELAY SIGNAL, CHANNEL 12 BIT
# 15, IS CHECKED AND IF IT IS ON, ITURNON EXITS. IF THE DELAY SIGNAL IS OFF, PROGRAM ALARM 00207 IS ISSUED, BIT 2
# OF IMODES30 IS SET TO 1 AND THE PROGRAM EXITS.
# THE SETTING OF BIT 2 OF IMODES30 (ISS DELAY SEQUENCE FAIL) INHIBITS THIS ROUTINE AND IMUOP FROM
# PROCESSING ANY CHANGES. THIS BIT WILL BE RESET BY THE ENDTNON ROUTINE WHEN THE CURRENT 90 SECOND DELAY PERIOD
# ENDS.
# CALLING SEQUENCE: FROM IMUMOM WHEN ISS TURN-ON REQUEST CHANGES STATE.
# JOBS OR TASKS INITIATED: NONE.
# SUBROUTINES CALLED: ALARM, IF THE ISS TURN-ON REQUEST IS NOT PRESENT FOR 90 SECONDS.
# ERASABLE INITIALIZATION: FRESH START AND RESTART SET BIT 15 OF CHANNEL 12 AND BITS 2 AND 7 OF IMODES30 TO 0,
# AND BIT 14 OF IMODES30 TO 1.
# ALARMS: PROGRAM ALARM 00207 IS ISSUED IF THE ISS TURN-ON REQUEST SIGNAL IS NOT PRESENT FOR 90 SECONDS.
# EXIT: NXTIFAIL.
# OUTPUT: BIT 7 OF IMODES30 TO START ISS INITIALIZATION, OR BIT 2 OF IMODES30 AND PROGRAM ALARM 00207 TO INDICATE
# A FAILED TURN-ON SEQUENCE.
ITURNON CAF BIT2 # IF DELAY REQUEST HAS GONE OFF
MASK IMODES30 # PREMATURELY, DO NOT PROCESS ANY CHANGES
CCS A # UNTIL THE CURRENT 90 SEC WAIT EXPIRES.
TCF NXTIFAIL
CAF BIT14 # SEE IF JUST ON OR OFF.
MASK IMODES30
EXTEND
BZF ITURNON2 # IF JUST ON.
CAF BIT15
EXTEND # SEE IF DELAY PRESENT DISCRETE HAS BEEN
RAND CHAN12 # SENT. IF SO, ACTION COMPLETE
EXTEND
BZF +2
TCF NXTIFAIL
CAF BIT2 # IF NOT, SET BIT TO INDICATE REQUEST NOT
ADS IMODES30 # PRESENT FOR FULL DURATION.
TC ALARM
OCT 207
TCF NXTIFAIL
## Page 174
ITURNON2 CS IMODES30 # SET BIT7 TO INDICATE WAIT OF 1 SAMPLE
MASK BIT7
ADS IMODES30
CAF RRINIT
TS RADMODES
TCF NXTIFAIL
RRINIT OCT 00102
## Page 175
# PROGRAM NAME: IMUCAGE.
# FUNCTIONAL DESCRIPTION: THIS PROGRAM PROCESSES CHANGES OF THE IMUCAGE INBIT, CHANNEL 30 BIT 11. IF THE BIT
# CHANGES TO 0 (CAGE BUTTON PRESSED), THE ISS IS CAGED (ICDU ZERO + COARSE ALIGN + NO ATT LAMP) UNTIL THE
# ASTRONAUT SELECTS ANOTHER PROGRAM TO ALIGN THE ISS. ANY PULSE TRAINS TO THE ICDU'S AND GYRO'S ARE TERMINATED,
# THE ASSOCIATED OUTCOUNTERS ARE ZEROED AND THE GYRO'S ARE DE-SELECTED. NO ACTION OCCURS WHEN THE BUTTON IS
# RELEASED (INBIT CHANGES TO 1).
# CALLING SEQUENCE: BY IMUMON WHEN IMU CAGE BIT CHANGES.
# JOBS OR TASKS INITIATED: NONE.
# SUBROUTINES CALLED: CAGESUB.
# ERASABLE INITIALIZATION: FRESH START AND RESTART SET BIT 11 OF IMODES30 TO 1.
# ALARMS: NONE.
# EXIT: NXTIFAIL.
# OUTPUT: ISS CAGED, COUNTERS ZEROED, PULSE TRAINS TERMINATED AND NO ATT LAMP LIT.
IMUCAGE CCS A # NO ACTION IF GOING OFF.
TCF ISSZERO
CS OCT77000 # TERMINATE ICDU,RCDU, GYRO PULSE TRAINS
EXTEND
WAND CHAN14
CS OCT272 # KNOCK DOWN DISPLAY INERTIAL DATA, IMU
EXTEND # ERROR COUNTER ENABLE, ZERO ICDU, COARSE
WAND CHAN12 # ALIGN ENABLE, RR ERROR COUNTER ENABLE.
CS ENGONBIT # INSURE ENGONFLG IS CLEAR.
MASK FLAGWRD5
TS FLAGWRD5
CS PRIO30 # TURN ENGINE OFF.
EXTEND
RAND DSALMOUT
AD BIT14
EXTEND
WRITE DSALMOUT # FORCE BIT14=1, BIT13=0.
TC CAGESUB1
TC IBNKCALL # KNOCK DOWN TRACK, REFSMMAT, DRIFT FLAGS
CADR RNDREFDR
CS ZERO
TS CDUXCMD
TS CDUYCMD
## Page 176
TS CDUZCMD
TS GYROCMD
CS OCT740 # HAVING WAITED AT LEAST 27 MCT FROM
EXTEND # GYRO PULSE TRAIN TERMINATION, WE CAN
WAND CHAN14 # DE-SELECT THE GYROS
TCF NXTIFAIL
## Page 177
# PROGRAM NAME: IMUOP.
# FUNCTIONAL DESCRIPTION: THIS PROGRAM PROCESSES CHANGES IN THE ISS OPERATE DISCRETE, BIT 9 OF CHANNEL 30.
# IF THE INBIT CHANGES TO 0, INDICATING ISS ON, IMUOP GENERALLY SETS BIT 7 OF IMODES30 TO 1 TO REQUEST ISS
# INITIALIZATION VIA TNONTEST. AN EXCEPTION IS DURING A FAILED ISS DELAY DURING WHICH BIT 2 OF IMODES30 IS SET
# TO 1 AND NO FURTHER INITIALIZATION IS REQUIRED. WHEN THE INBIT CHANGES TO 1, INDICATING ISS OFF, IMUSEFLG IS
# TESTED TO SEE IF ANY PROGRAM WAS USING THE ISS. IF SO, PROGRAM ALARM 00214 IS ISSUED.
# CALLING SEQUENCE: BY IMUMON WHEN BIT 9 OF CHANNEL 30 CHANGES.
# JOBS OR TASKS INITIATED: NONE.
#
# SUBROUTINES CALLED: ALARM, IF ISS IS TURNED OFF WHILE IN USE.
# ERASABLE INITIALIZATION: ON FRESH START AND RESTART, BIT 9 OF IMODES30 IS SET TO 1 EXCEPT WHEN THE GIMBAL LOCK
# LAMP IS ON, IN WHICH CASE IT IS SET TO 0. THIS PREVENTS ICDU ZERO BY TNONTEST WITH THE ISS IN GIMBAL LOCK.
# ALARMS: PROGRAM ALARM 00214 IF THE ISS IS TURNED OFF WHILE IN USE.
# EXIT: NXTIFAIL.
# OUTPUT: ISS INITIALIZATION REQUEST (IMODES30 BIT 7) OR PROGRAM ALARM 00214.
IMUOP EXTEND
BZF IMUOP2
CS IMODES33 # DISABLE DAP
MASK BIT6
ADS IMODES33
TC IBNKCALL # KNOCK DOWN TRACK, REFSMMAT, DRIFT FLAGS
CADR RNDREFDR
CS BITS7&8 # KNOCK DOWN RENDEZVOUS, IMUUSE FLAGS
MASK FLAGWRD0
XCH FLAGWRD0 # IF GOING OFF, ALARM IF PROG USING IMU.
COM
MASK IMUSEFLG
CCS A
TCF NXTIFAIL
TC ALARM
OCT 214
TCF NXTIFAIL
IMUOP2 CAF BIT2 # SEE IF FAILED ISS TURN-ON SEQ IN PROG.
MASK IMODES30
CCS A
TCF NXTIFAIL # IF SO, DONT PROCESS UNTIL PRESENT 90
TCF ITURNON2 # SECONDS EXPIRES.
## Page 178
# PROGRAM NAME: PIPFAIL
# FUNCTIONAL DESCRIPTION: THIS PROGRAM PROCESSES CHANGES OF BIT 13 OF CHANNEL 33, PIPA FAIL. IT SETS BIT 10 OF
# IMODES30 TO AGREE. IT CALLS SETISSW IN CASE A PIPA FAIL NECESSITATES AN ISS WARNING. IF NOT,I.E., IMODES30
# BIT 1 = 1, AND A PIPA FAIL IS PRESENT AND THE ISS IS NOT BEING INITIALIZED, PROGRAM ALARM 00212 IS ISSUED.
# CALLING SEQUENCE: BY C33TEST ON CHANGES OF CHANNEL 33 BIT 13.
# JOBS OR TASKS INITIATED: NONE.
# SUBROUTINES CALLED: 1) SETISSW, AND 2) ALARM (SEE FUNCTIONAL DESCRIPTION).
# ERASABLE INITIALIZATION: SEE IMUMON FOR INITIALIZATION OF IMODES30. THE RELAVANT BITS ARE 5, 7, 8, 9, AND 10.
# ALARMS: PROGRAM ALARM 00212 IF PIPA FAIL IS PRESENT BUT NEITHER ISS WARNING IS TO BE ISSUED NOR THE ISS IS
# BEING INITIALIZED.
# EXIT: NXTFL33.
# OUTPUT: PROGRAM ALARM 00212 AND ISS WARNING MAINTENANCE.
PIPFAIL CCS A # SET BIT10 IN IMODES30 SO ALL ISS WARNING
CAF BIT10 # INFO IS IN ONE REGISTER.
XCH IMODES30
MASK -BIT10
ADS IMODES30
TC SETISSW
CS IMODES30 # IF PIP FAIL DOESNT LIGHT ISS WARNING, DO
MASK BIT1 # A PROGRAM ALARM IF IMU OPERATING BUT NOT
CCS A # CAGED OR BEING TURNED ON.
TCF NXTFL33
CA IMODES30
MASK OCT1720
CCS A
TCF NXTFL33 # ABOVE CONDITION NOT MET.
TC ALARM
OCT 212
TCF NXTFL33
## Page 179
# PROGRAM NAMES: DNTMFAST, UPTMFAST
# FUNCTIONAL DESCRIPTION: THESE PROGRAMS PROCESS CHANGES OF BITS 12 AND 11 OF CHANNEL 33. IF A BIT CHANGES TO A
# 0, A PROGRAM ALARM IS ISSUED. THE ALARMS ARE:
# BIT ALARM CAUSE
# --- ----- -----
# 12 01105 DOWNLINK TOO FAST
# 11 01106 UPLINK TOO FAST
# CALLING SEQUENCE: BY C33TEST ON A BIT CHANGE.
# SUBROUTINES CALLED: ALARM, IF A BIT CHANGES TO A 0.
# ERASABLE INITIALIZATION: FRESH START OR RESTART, BITS 12 AND 11 OF IMODES33 ARE SET TO 1.
# ALARMS: SEE FUNCTIONAL DESCRIPTION.
# EXIT: NXTFL33.
# OUTPUT: PROGRAM ALARM ON A BIT CHANGE TO 0.
DNTMFAST CCS A # DO PROG ALARM IF TM TOO FAST.
TCF NXTFL33
TC ALARM
OCT 1105
TCF NXTFL33
UPTMFAST CCS A # SAME AS DNLINK TOO FAST WITH DIFFERENT
TCF NXTFL33 # ALARM CODE.
TC ALARM
OCT 1106
TCF NXTFL33
## Page 180
# PROGRAM NAME: SETISSW
# FUNCTIONAL DESCRIPTION: THIS PROGRAM TURNS THE ISS WARNING LAMP ON AND OFF (CHANNEL 11 BIT 1 = 1 FOR ON,
# 0 FOR OFF) DEPENDING ON THE STATUS OF IMODES30 BITS 13 (IMU FAIL) AND 4 (INHIBIT IMU FAIL), 12 (ICDU FAIL) AND
# 3 (INHIBIT ICDU FAIL), AND 10 (PIPA FAIL) AND 1 (INHIBIT PIPA FAIL). THE LAMP IS LEFT ON IF A LAMP TEST IS IN
# PROGRESS.
# CALLING SEQUENCE: CALLED BY IMUMON ON CHANGES TO IMU FAIL AND ICDU FAIL. CALLED BY IFAILOK AND PFAILOK UPON
# REMOVAL OF THE FAIL INHIBITS. CALLED BY PIPFAIL WHEN THE PIPA FAIL DISCRETE CHANGES. IT IS CALLED BY PIPUSE
# SINCE THE PIPA FAIL PROGRAM ALARM MAY NECESSITATE AN ISS WARNING, AND LIKEWISE BY PIPFREE WHEN THE ALARM DEPARTS
# AND IT IS CALLED BY IMUZERO3 AND ISSUP AFTER THE FAIL INHIBITS HAVE BEEN REMOVED.
# JOBS OR TASKS INITIATED: NONE.
# SUBROUTINES CALLED: NONE.
# ERASABLE INITIALIZATION:
# 1) IMODES30 - SEE IMUMON.
# 2) IMODES33 BIT 1 = 0 (LAMP TEST NOT IN PROGRESS).
# ALARMS: ISS WARNING.
# THE FOLLOWING PROGRAM ALARMS WILL SHOW WHICH FAILURE CAUSED THE ISS WARN
# PROGRAM ALARM 00777 PIPA FAIL
# PROGRAM ALARM 03777 ICDU FAIL
# PROGRAM ALARM 04777 ICDU , PIPA FAILS
# PROGRAM ALARM 07777 IMU FAIL
# PROGRAM ALARM 10777 IMU , PIPA FAILS
# PROGRAM ALARM 13777 IMU , ICDU FAILS
# PROGRAM ALARM 14777 IMU , ICDU , PIPA FAILS
# EXIT: VIA Q.
# OUTPUT: ISS WARNING LAMP SET PROPERLY.
SETISSW CAF OCT15 # SET ISS WARNING USING THE FAIL BITS IN
MASK IMODES30 # BITS 13, 12, AND 10 OF IMODES30 AND THE
EXTEND # FAILURE INHIBIT BITS IN POSITIONS
MP BIT10 # 4, 3, AND 1.
CA IMODES30
EXTEND
ROR LCHAN # 0 INDICATES FAILURE
COM
MASK OCT15000
CCS A
TCF ISSWON # FAILURE.
ISSWOFF CAF BIT1 # DONT TURN OFF ISS WARNING IF LAMP TEST
MASK IMODES33 # IN PROGRESS.
## Page 181
CCS A
TC Q
CS BIT1
EXTEND
WAND DSALMOUT
TC Q
ISSWON EXTEND
QXCH ITEMP6
TC VARALARM # TELL EVERYONE WHAT CAUSED THE ISS WARNING
CAF BIT1
EXTEND
WOR DSALMOUT
TC ITEMP6
CAGESUB CS BITS6&15 # SET OUTBITS AND INTERNAL FLAGS FOR
EXTEND # SYSTEM TURN-ON OR CAGE. DISABLE THE
WAND CHAN12 # ERROR COUNTER AND REMOVE IMU DELAY COMP.
CAF BITS4&5 # SEND ZERO AND COARSE.
EXTEND
WOR CHAN12
CAGESUB1 CS DSPTAB +11D # TURN ON NO ATT LAMP
MASK OC40010
ADS DSPTAB +11D
CAGESUB2 CS IMODES30 # SET FLAGS TO INDICATE CAGING OR TURN-ON
MASK OCT75 # AND INHIBIT ALL ISS WARNING INFO
ADS IMODES30
CS IMODES33 # DISABLE DAP AUTO AND HOLD MODES
MASK BIT6
ADS IMODES33
TC Q
IMUFAIL EQUALS SETISSW
ICDUFAIL EQUALS SETISSW
## Page 182
# JUMP TABLES AND CONSTANTS.
IFAILJMP TCF ITURNON # CHANNEL 30 DISPATCH.
TCF IMUFAIL
TCF ICDUFAIL
TCF IMUCAGE
30RDMSK OCT 76400 # (BIT 10 NOT SAMPLED HERE).
TCF IMUOP
C33JMP TCF PIPFAIL # CHANNEL 33 DISPATCH.
TCF DNTMFAST
TCF UPTMFAST
# SUBROUTINE TO SKIP IF LAMP TEST NOT IN PROGRESS.
LAMPTEST CS IMODES33 # BIT 1 OF IMODES33 = 1 IF LAMP TEST IN
MASK BIT1 # PROGRESS.
CCS A
INCR Q
TC Q
33RDMSK EQUALS PRIO16
OC40010 OCT 40010
OCT54 OCT 54
OCT75 OCT 75
OCT272 OCT 00272
BITS7&8 OCT 300
OCT1720 OCT 1720
OCT740 OCT 00740
OCT15000 EQUALS PRIO15
OCT77000 OCT 77000
BITS6&15 OCT 40040
-BIT10 OCT -1000
90SECS DEC 9000
120MS = OCT14 # (DEC12)
GLOCKOK EQUALS RESUME
## Page 183
# PROGRAM NAME_ RRAUTCHK
# FUNCTIONAL DESCRIPTION_
# RRAUTCHK IS THE RENDEZVOUS RADAR INBIT MONITOR. INITIALLY THE RR
# POWER ON AUTO (CHAN 33 BIT 2) INBIT IS CHECKED. IF NO CHANGE, THE
# PROGRAM EXITS TO RRCDUCHK. IF A CHANGE, RADMODES IS UPDATED
# AND A CHECK MADE IF RR POWER HAS JUST COME ON. IF JUST OFF, A CHECK
# IS MADE TO SEE IF A PROGRAM WAS USING THE RR (STATE BIT 7). IF NO,
# THE PROGRAM EXITS TO RRCDUCHK. IF YES, PROGRAM ALARM 00514
# IS REQUESTED BEFORE EXITING TO RRCDUCHK. IF RR POWER HAS JUST COME
# ON, A CHECK IS MADE TO SEE IF A PROGRAM WAS USING THE RR (STATE BIT 7).
# IF YES, THE PROGRAM EXITS TO RRCDUCHK WITHOUT REQUESTING THE TURN-ON
# SEQUENCE. IF NO, RADMODES IS UPDATED TO INDICATE RR CDU ZERO AND
# RR TURN-ON SEQUENCE (BITS 13, 1). A 10 MILLISECOND WAITLIST CALL
# IS THEN SET FOR RRTURNON BEFORE THE PROGRAM EXITS TO NORRGMON.
# CALLING SEQUENCE_
# T4RUPT EVERY 480 MILLISECONDS
# ERASABLE INITIALIZATION REQUIRED_
# RADMODES, STATE
# SUBROUTINES CALLED_
# WAITLIST
# JOBS OR TASKS INITIATED_
# RRTURNON
# ALARMS_ PROGRAM ALARM 00514 - RADAR GOES OUT OF AUTO MODE WHILE BEING
# USED
# EXIT_ RRCDUCHK, NORRGMON
RRAUTCHK CA RADMODES # SEE IF CHANGE IN RR AUTO MODE BIT.
EXTEND
RXOR CHAN33
MASK AUTOMBIT
EXTEND
BZF RRCDUCHK
LXCH RADMODES # UPDATE RADMODES.
EXTEND
RXOR LCHAN
MASK OCT05776 # CLR CONT. DES., REMODE, REPOS, CDUZERO,
TS RADMODES # AND TURNON BITS.
MASK BIT2 # SEE IF JUST ON.
CCS A
TCF RRCDUCHK -3 # OFF. GO DISABLE RR CDU ERROR COUNTERS.
CA OCT10001 # SET RRCDUZRO AND TURNON BITS.
ADS RADMODES
## Page 184
CAF ONE
TC WAITLIST
EBANK= LOSCOUNT
2CADR RRTURNON
TCF NORRGMON
OCT05776 OCT 5776
## Page 185
# PROGRAM NAME_ RRCDUCHK
# FUNCTIONAL DESCRIPTION_
# RRCDUCHK CHECKS FOR RR CDU FAIL (CHAN 30 BIT 7). INITIALLY THE
# RR CDU FAIL BIT IS SAMPLED (CHAN 30 BIT 7). IF NO CHANGE, THE
# PROGRAM EXITS TO RRGIMON. IF A CHANGE, THE RR AUTO MODE
# (RADMODES BIT 2) BIT IS CHECKED. IF NOT IN RR AUTO MODE, THE
# PROGRAM EXITS TO NORRGMON. IF IN AUTO MODE, RADMODES BIT 7
# (RR CDU OK) IS UPDATED AND IF P-20 IS OPERATING PROGRAM ALARM 00515 IS
# REQUESTED. CONTROL IS TRANSFERRED TO SETTRKF TO UPDATE
# THE TRACKER FAIL LAMP (DSPTAB+11D BIT 8). CONTROL RETURNS TO
# RRGIMON.
# CALLING SEQUENCE_
# EVERY 480 MILLISECONDS FROM RRAUTCHK (VIA T4RUPT) UNLESS A
# TURN-ON SEQUENCE HAS JUST BEEN INITIATED.
# ERASABLE INITIALIZATION REQUIRED_
# RADMODES
# SUBROUTINES CALLED_
# SETTRKF
# JOBS OR TASKS INITIATED_
# NONE
# ALARMS_
# TRACKER FAIL
# PROGRAM ALARM 00515 - RRCDU FAIL DURING P-20
# EXIT_
# RRGIMON, NORRGMON
-3 CS BIT2
EXTEND
WAND CHAN12 # AT TURNON, DISABLE CDU ERROR COUNTERS.
RRCDUCHK CA RADMODES # LAST SAMPLED BIT IN RADMODES.
EXTEND
RXOR CHAN30
MASK RCDUFBIT
EXTEND
BZF RRGIMON
CAF AUTOMBIT # IF RR NOT IN AUTO MODE, DON'T CHANGE BIT
MASK RADMODES # 7 OF RADMODES. IF THIS WERE NOT DONE,
CCS A # THE TRACKER FAIL MIGHT COME ON WHEN
TCF NORRGMON # JUST READING LR DATA.
CAF RCDUFBIT # SET BIT 7 OF RADMODES FOR SETTRKF.
## Page 186
LXCH RADMODES # UPDATE RADMODES.
EXTEND
RXOR L
TS RADMODES
CA RADMODES # DID RR CDU FAIL
MASK 13,7,2 # CDU ZERO+ CDUFAIL+ RR AUTO
CCS A
TCF TRKFLCDU # NO
CS FLAGWRD0 # RNDVFLG P20 OR P22 OPERATING
MASK RNDVZBIT
CCS A
TCF TRKFLCDU # NO
TC ALARM # YES
OCT 00515
TRKFLCDU TC SETTRKF # UPDATE TRACKER FAIL LAMP ON DSKY.
## Page 187
# PROGRAM NAME_ RRGIMON E AUTO MODE EXCEPT WHEN THE RR CDUS ARE
# FUNCTIONAL DESCRIPTION_ TTER IS INITIATED BY THIS MONITOR WHEN
# RRGIMON IS THE RR GIMBAL LIMIT MONITOR. INITIALLY THE FOLLOWING IS ED TO DRIVE THE GIMBALS TO T = 0 AND
# CHECKED_ REMODE, RR CDU:S BEING ZEROED, REPOSITION, AND RR
# NOT IN AUTO MODE (RADMODES BITS 14, 13, 11 2). IF ANY OF THESE
# EXIST THE PROGRAM EXITS TO GPMATRIX. IF NONE ARE PRESENT RRLIMCHK
# IS CALLED TO SEE IF THE PRESENT RR CDU ANGLES (OPTY, OPTX) ARE WITHIN
# THE LIMITS OF THE CURRENT MODE. IF WITHIN LIMITS, THE PROGRAM EXITS
# TO NORRGMON. IF NOT WITHIN LIMITS, THE REPOSITION FLAG (RADMODES
# BIT 11) IS SET, THE RR AUTO TRACKER AND RR ERROR COUNTER
# (CHAN 12 BITS 14, 2) ARE DISABLED, AND A 20 MILLISECOND WAITLIST
# CALL IS SET FOR DORREPOS AFTER WHICH THE PROGRAM EXITS TO NORRGMON.
# CALLING SEQUENCE_
# EVERY 480 MILLISECONDS FROM RRCDUCHK (VIA T4RUPT) UNLESS TURN-ON
# HAS JUST BEEN INITIATED VIA RRAUTCHK OR IF THERE HAS BEEN A CHANGE IN
# THE RR CDU FAIL BIT (CHAN 30 BIT 7) AND THE RR IS NOT IN THE AUTO MODE
# (RADMODES BIT 2).
# ERASABLE INITIALIZATION_ RADMODES
# SUBROUTINES CALLED_
# RRLIMCHK, WAITLIST
# JOBS OR TASKS INITIATED_
# DORREPOS
# ALARMS_
# NONE
# EXIT_
# NORRGMON
RRGIMON CAE FLAGWRD5 # IS NO ANGLE MONITOR FLAG SET
MASK NORRMBIT
CCS A
TCF NORRGMON # YES - SKIP LIMIT CHECK
CS FLAGWRD7 # IS SERVICER RUNNING?
MASK AVEGFBIT
CCS A
TCF +5 # NO. DO R25
CA FLAGWRD6 # YES. IS MUNFLAG SET?
MASK MUNFLBIT
CCS A
TCF NORRGMON # YES. DON'T DO R25
+5 CAF OCT32002 # INHIBIT BY REMODE,ZEROING,MONITOR.
MASK RADMODES # OR RR NOT IN AUTO.
CCS A
TCF NORRGMON
## Page 188
TC RRLIMCHK # SEE IF ANGLES IN LIMITS.
ADRES CDUT
TCF MONREPOS
TCF NORRGMON # (ADDITIONAL CODING MAY GO HERE).
MONREPOS CAF REPOSBIT # SET FLAG TO SHOW REPOSITION IN PROGRESS.
ADS RADMODES
CS OCT20002 # DISABLE TRACKER AND ERROR COUNTER.
EXTEND
WAND CHAN12
CAF TWO
TC WAITLIST
EBANK= LOSCOUNT
2CADR DORREPOS
NORRGMON CA RADMODES # IF SELECT SWITCH IS NOT IN LGC, SEND RR
MASK AUTOMBIT # CDU ZERO BIT TO PREVENT MEMORY CYCLE
CCS A # SNATCHING BY MANIC RR CDUS. BIT2 OF
NOOP # RADMODES AGREES WITH BIT2 OF CHANNEL
EXTEND # 33. FOR THIS CODING, WHICH ASSUMES
WOR CHAN12 # AUTOMBIT = BIT2, THANKS TO HUGH B-S.
TCF ENDRRMON
ENDRRMON EQUALS DAPT4S
OCT32002 OCT 32002
OCT20002 OCT 20002
OCT02100 OCT 02100 # P20, P22 MASK BITS
## Page 189
# PROGRAM NAME: GPMATRIX (DAPT4S) MOD. NO. 2 DATE: OCTOBER 27, 1966
# AUTHOR: JONATHAN D. ADDELSTON (ADAMS ASSOCIATES)
# MODIFIED: 7FEB. 1968 BY P. S. WEISSMAN TO DELETE COMPUTATION OF MR12 AND MR13, WHICH ARE NO LONGER REQIURED.
# THIS PROGRAM CALCULATES ALL THE SINGLE-PRECISION MATRIX ELEMENTS WHICH ARE USED BY LEM DAP TO TRANSFORM VECTORS
# FROM GIMBAL TO PILOT (BODY) AXES AND BACK AGAIN. THESE ELEMENTS ARE USED EXCLUSIVELY BY BASIC LANGUAGE ROUTINES
# AND THEREFORE ARE NOT ARRAYED FOR USE BY INTERPRETIVE PROGRAMS.
# CALLING SEQUENCE: GPMATRIX IS TRANSFERRED TO FROM DAPT4S AND IS THUS EXECUTED 4 TIMES A SECOND BY T4RUPT.
# DAPT4S IS LISTED IN T4JUMP TABLE TWICE EXPLICITLY AND ALSO OCCURS AFTER RRAUTCHK (WHICH IS ALSO LISTED TWICE).
# SUBROUTINES CALLED: SPSIN, SPCOS.
# NORMAL EXIT MODE: TCF RESUME
# ALARM AND ABORT MODES: NONE.
# INPUT: CDUX, CDUY, CDUZ.
# OUTPUT: M11, M21, M31, M22, M32.
# AOG = CDUX, AIG = CDUY, AMG = CDUZ: MNEMONIC IS : OIM = XYZ
# * * SIN(MG) 0 1 *
# M = * COS(MG)COS(OG) SIN(OG) 0 *
# GP * -COS(MG)SIN(OG) COS(OG) 0 *
# * * 0 COS(OG)/COS(MG) -SIN(OG)/COS(MG) *
# M = * 0 SIN(OG) COS(OG) *
# PG * 1 -SIN(MG)COS(OG)/COS(MG) SIN(MG)SIN(OG)/COS(MG) *
EBANK= M11
DAPT4S EQUALS GPMATRIX
# T4RUPT DAP LOGIC:
GPMATRIX CAE CDUZ # SINGLE ENTRY POINT
TC SPSIN # SIN(CDUZ) = SIN(MG)
TS M11 # SCALED AT 1
CAE CDUZ
TC SPCOS # COS(CDUZ) = COS(MG)
TS COSMG # SCALED AT 1 (ONLY A FACTOR)
CAE CDUX
TC SPSIN # SIN(CDUX) = SIN(OG)
TS M22 # SCALED AT 1 (ALSO IS MR22)
CS M22
## Page 190
EXTEND
MP COSMG # -SIN(OG)COS(MG)
TS M31 # SCALED AT 1
CAE CDUX
TC SPCOS # COS(CDUX) = COS(OG)
TS M32 # SCALED AT 1 (ALSO IS MR23)
EXTEND
MP COSMG # COS(OG)COS(MG)
TS M21 # SCALED AT 1
TC RESUME
ENDDAPT4 EQUALS RESUME
