### FILE="Main.annotation"
## Copyright:   Public domain.
## Filename:    ALARM_AND_ABORT.agc
## Purpose:     A section of LUM69 revision 2.
##              It is part of the reconstructed source code for the flown
##              version of the flight software for the Lunar Module's (LM)
##              Apollo Guidance Computer (AGC) for Apollo 10. The code has
##              been recreated from a copy of Luminary revsion 069, using
##              changes present in Luminary 099 which were described in
##              Luminary memos 75 and 78. The code has been adapted such
##              that the resulting bugger words exactly match those specified
##              for LUM69 revision 2 in NASA drawing 2021152B, which gives
##              relatively high confidence that the reconstruction is correct.
## Reference:   pp. 1375-1378
## Assembler:   yaYUL
## Contact:     Ron Burkey <info@sandroid.org>.
## Website:     www.ibiblio.org/apollo/index.html
## Mod history: 2019-07-27 MAS  Created from Luminary 69.
##              2021-05-30 ABS  OCT21103 -> OCT1103

## Page 1375
#          THE FOLLOWING SUBROUTINE MAY BE CALLED TO DISPLAY A NON-ABORTIVE ALARM CONDITION. IT MAY BE CALLED
# EITHER IN INTERRUPT OR UNDER EXECUTIVE CONTROL.
#
# CALLING SEQUENCE IS AS FOLLOWS:
#		TC	ALARM
#		OCT	AAANN		ALARM NO. NN IN GENERAL AREA AAA.
#					(RETURNS HERE)

		BLOCK	02
		SETLOC	FFTAG7
		BANK

		EBANK=	FAILREG

		COUNT*	$$/ALARM
# ALARM TURNS ON THE PROGRAM ALARM LIGHT, BUT DOES NOT DISPLAY.

ALARM		INHINT

		CA	Q
ALARM2		TS	ALMCADR
		INDEX	Q
		CA	0
BORTENT		TS	L

PRIOENT		CA	BBANK
 +1		EXTEND
		ROR	SUPERBNK	# ADD SUPER BITS.
		TS	ALMCADR +1

LARMENT		CA	Q		# STORE RETURN FOR ALARM
		TS	ITEMP1

CHKFAIL1	CCS	FAILREG		# IS ANYTHING IN FAILREG
		TCF	CHKFAIL2	# YES TRY NEXT REG
		LXCH	FAILREG
		TCF	PROGLARM	# TURN ALARM LIGHT ON FOR FIRST ALARM

CHKFAIL2	CCS	FAILREG +1
		TCF	FAIL3
		LXCH	FAILREG +1
		TCF	MULTEXIT

FAIL3		CA	FAILREG +2
		MASK	POSMAX
		CCS	A
		TCF	MULTFAIL
		LXCH	FAILREG +2
		TCF	MULTEXIT

## Page 1376

PROGLARM	CS	DSPTAB +11D
		MASK	OCT40400
		ADS	DSPTAB +11D

MULTEXIT	XCH	ITEMP1		# OBTAIN RETURN ADDRESS IN A
		RELINT
		INDEX	A
		TC	1

MULTFAIL	CA	L
		AD	BIT15
		TS	FAILREG +2

		TCF	MULTEXIT

# PRIOLARM DISPLAYS V05N09 VIA PRIODSPR WITH 3 RETURNS TO THE USER FROM THE ASTRONAUT AT CALL LOC +1,+2,+3 AND
# AN IMMEDIATE RETURN TO THE USER AT CALL LOC +4.  EXAMPLE FOLLOWS,
#		CAF	OCTXX		ALARM CODE
#		TC	BANKCALL
#		CADR	PRIOLARM
#
#		...	...
#		...	...
#		...	...		ASTRONAUT RETURN
#		TC	PHASCHNG	IMMEDIATE RETURN TO USER.  RESTART
#		OCT	X.1		PHASE CHANGE FOR PRIO DISPLAY

		BANK	10
		SETLOC	DISPLAYS
		BANK

		COUNT*	$$/DSPLA
PRIOLARM	INHINT			# * * * KEEP IN DISPLAY ROUTINES BANK
		TS	L		# SAVE ALARM CODE

		CA	BUF2		# 2 CADR OF PRIOLARM USER
		TS	ALMCADR
		CA	BUF2 +1
		TC	PRIOENT +1	# * LEAVE L ALONE
-2SEC		DEC	-200		# *** DONT MOVE
		CAF	V05N09
		TCF	PRIODSPR

		BLOCK	02
		SETLOC	FFTAG7
		BANK

		COUNT*	$$/ALARM
BAILOUT		INHINT
		CA	Q
## Page 1377
		TS	ALMCADR

		INDEX	Q
		CAF	0
		TC	BORTENT
OCT40400	OCT	40400

		INHINT
WHIMPER		CA	TWO
		AD	Z
		TS	BRUPT
		RESUME
		TC	POSTJUMP	# RESUME SENDS CONTROL HERE
		CADR	ENEMA
POODOO		INHINT
		CA	Q
ABORT2		TS	ALMCADR
		INDEX	Q
		CAF	0
		TC	BORTENT
OCT77770	OCT	77770		# DON'T MOVE

		CAF	OCT35		# 4.35SPOT FOR GOPOODOO
		TS	L
		COM
		DXCH	-PHASE4
GOPOODOO	INHINT
		CA	FLAGWRD7	# IS SERVICER CURRENTLY IN OPERATION?
		MASK	V37FLBIT
		CCS	A
		TCF	STRTIDLE
		TC	BANKCALL
		CADR	MR.KLEAN
		TCF	WHIMPER
STRTIDLE	TC	POSTJUMP	# PUT SERVICER INTO ITS "GROUND" STATE
		CADR	SERVIDLE	# AND PROCEED TO GOTOPOOH.
CCSHOLE		INHINT
		CA	Q
		TC	ABORT2
OCT1103		OCT	1103
CURTAINS	INHINT
		CA	Q
		TC	ALARM2
OCT217		OCT	00217
		TC	ALMCADR		# RETURN TO USER

BAILOUT1	INHINT
		DXCH	ALMCADR
		CAF	ADR40400
BOTHABRT	TS	ITEMP1
## Page 1378
		INDEX	Q
		CAF	0
		TS	L
		TCF	CHKFAIL1
POODOO1		INHINT
		DXCH	ALMCADR
		CAF	ADR77770
		TCF	BOTHABRT

ALARM1		INHINT
		DXCH	ALMCADR
ALMNCADR	INHINT
		INDEX	Q
		CA	0
		TS	L
		TCF	LARMENT

ADR77770	TCF	OCT77770
ADR40400	TCF	OCT40400
DOALARM		EQUALS	ENDOFJOB

# CALLING SEQUENCE FOR VARALARM
#		CAF	(ALARM)
#		TC	VARALARM
#
# VARALARM TURNS ON PROGRAM ALARM LIGHT BUT DOES NOT DISPLAY

VARALARM	INHINT

		TS	L		# SAVE USERS ALARM CODE

		CA	Q		# SAVE USERS Q
		TS	ALMCADR

		TC	PRIOENT
OCT14		OCT	14		# DONT MOVE

		TC	ALMCADR		# RETURN TO USER

ABORT		EQUALS	WHIMPER