# Copyright:	Public domain.
# Filename:	DISPLAY_INTERFACE_ROUTINES.s
# Purpose:	A section of Luminary 1C, revision 131.
#		It is part of the source code for the Lunar Module's (LM)
#		Apollo Guidance Computer (AGC) for Apollo 13 and Apollo 14.
#		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. 1338-1370 of 1729.pdf.
# Contact:	Ron Burkey <info@sandroid.org>.
# Website:	www.ibiblio.org/apollo/index.html
# Mod history:	06/06/03 RSB.	Began transcribing.
#		05/14/05 RSB.	Corrected website reference above.

# Page 1338
# DISPLAYS CAN BE CLASSIFIED INTO THE FOLLOWING CATEGORIES --
#	1.  PRIORITY DISPLAYS -- DISPLAYS WHICH TAKE PRIORITY OVER ALL OTHER DISPLAYS.  USUALLY THESE DISPLAYS ARE SENT
#	    OUT UNDER CRITICAL ALARM CONDITIONS.
#	2.  EXTENDED VERB DISPLAYS -- ALL EXTENDED VERBS AND MARK ROUTINES SHOULD USE EXTENDED VERB (MARK) DISPLAYS.
#	3.  NORMAL DISPLAYS -- ALL MISSION PROGRAM DISPLAYS WHICH INTERFACE WITH THE ASTRONAUT DURING THE NORMAL
#	    SEQUENCE OF EVENTS.
#	4.  MISC. DISPLAYS -- ALL DISPLAYS NOT HANDLED BY THE DISPLAY INTERFACE ROUTINES.  THESE INCLUDE SUCH DISPLAYS AS
#	    MM DISPLAYS AND SPECIAL PURPOSE DISPLAYS HANDLED BY PINBALL.
#	5.  ASTRONAUT INITIATED DISPLAYS -- ALL DISPLAYS INITIATED EXTERNALLY.
#
# THE FOLLOWING TERMS ARE USED TO DESCRIBE THE STATUS OF DISPLAYS --
#	1.  ACTIVE -- THE DISPLAY WHICH IS (1) BEING DISPLAYED TO THE ASTRONAUT AND WAITING FOR A RESPONSE OR
#	    (2) WAITING FIRST IN LINE FOR THE ASTRONAUT TO FINISH USING THE DSKY OR (3) BEING DISPLAYED ON THE DSKY
#	    BUT NOT WAITING FOR A RESPONSE.
#	2.  INACTIVE -- A DISPLAY WHICH HAS (1) BEEN ACTIVE BUT WAS INTERRUPTED BY A DISPLAY OF HIGHER PRIORITY,
#	    (2) BEEN PUT INTO THE WAITING LIST AT TIME IT WAS REQUESTED DUE TO THE FACT A HIGHER PRIORITY DISPLAY
#	    WAS ALREADY DOING, (3) BEEN INTERRUPTED BY THE ASTRONAUT (CALLED A PINBRANCH CONDITION, SINCE THIS TYPE
#	    OF INACTIVE DISPLAY IS USUALLY REACTIVATED ONLY BY PINBALL) OR (4) A DISPLAY WHICH HAS FINISHED BUT STILL
#	    HAS INFO SAVED FOR RESTART PURPOSES.
#
# DISPLAY PRIORITIES WORK AS FOLLOWS --
#	INTERRUPTS --
#		1.  THE ASTRONAUT CAN INTERRUPT ANY DISPLAY WITH AN EXTERNAL DISPLAY REQUEST.
#		2.  INTERNAL DISPLAYS CAN NOT BE SENT OUT WHEN THE ASTRONAUT IS USING THE DSKY.
#		3.  PRIORITY DISPLAYS INTERRUPT ALL OTHER TYPES OF INTERNAL DISPLAYS.  A PRIORITY DISPLAY INTERRUPTING ANOTHER
#		    PRIORITY DISPLAY WILL CAUSE AN ABORT UNLESS BIT14 IS SET FOR TEH LINUS ROUTINE.
#		4.  A MARK DISPLAY INTERRUPTS ANY NORMAL DISPLAY.
#		5.  A MARK THAT INTERRUPTS A MARK COMPLETELY REPLACES IT.
#
# 	ORDER OF WAITING DISPLAYS --
#		1.  ASTRONAUT
#		2.  PRIORITY
#		3.  INTERRUPTED MARK
#		4.  INTERRUPTED NORMAL
#		5.  MARK TO BE REQUESTED (SEE DESCRIPTION OF ENDMARK)
#		6.  MARK WAITING
#		7.  NORMAL WAITING
#
# Page 1339
# THE DISPLAY ROUTINES ARE INTENDED TO SERVE AS AN INTERFACE BETWEEN THE USER AND PINBALL.  THE
# FOLLOWING STATEMENTS CAN BE MADE ABOUT NORMAL DISPLAYS AND PRIORITY DISPLAYS (A DESCRIPTION OF MARK ROUTINES
# WILL FOLLOW LATER):
#	1.  ALL ROUTINES THAT END IN R HAVE AN IMMEDIATE RETURN TO THE USER.  FOR ALL FLASHING DISPLAYS THIS RETURN
#	    IS TO THE USER'S CALL CADR +4.  FOR THE ONLY NON-FLASHING IMMEDIATE RETURN DISPLAY (GODSPR) THIS RETURN
#	    IS TO THE USER'S CALLING LOC +1.
#	2.  ALL ROUTINES NOT ENDING IN R DO NOT DO AN IMMEDIATE RETURN TO THE USER.
#	3.  ALL ROUTINES THAT END IN R START A SEPARATE JOB (MAKEPLAY) WITH USER'S JOB PRIORITY.
#	4.  ALL ROUTIENS NOT ENDING IN R BRANCH DIRECTLY TO MAKEPLAY WHICH MAKES THESE DISPLAYS A PART OF THE
#	    USER'S JOB.
#	5.  ALL DISPLAY ROUTIENS ARE CALLED VIA BANKCALL.
#	6.  TO RESTART A DISPLAY THE USER WILL GENERALLY USE A PHASE OF ONE WITH DESIRED RESTART GROUP (SEE
#	    DESCRIPTION OF RESTARTS).
#	7.  ALL FLASHING DISPLAYS HAVE 3 RETURNS TO THE USER FROM ASTRONAUT RESPOSES.  A TERMINATE (V34) BRANCHES
#	    TO THE USER'S CALL CADR +1.  A PROCEED (V33) BRANCHES TO THE USER'S CALL CADR +2.  AN ENTER OR RECYCLE
#	    (V32) BRANCHES TO THE USER'S CALL CADR +3.
#	8.  ALL ROUTINES MUST BE USED UNDER EXECUTIVE CONTROL
#
# A DESCRIPTION OF EACH ROUTINE WITH AN EXAMPLE FOLLOWS:
#	GODSP IS USED TO DISPLAY A VERB NOUN ARRIVING IN A.  NO RETURN IS MADE TO THE USER.
#		1.  GODSP IS NOT RESTARTABLE
#		2.  A VERB PASTE WITH GODSP ALWAYS TURNS ON THE FLASH.
#				CAF	VXXNYY
#				TC	BANKCALL
#				CADR	GODSP
#			VXXNYY	OCT	OXXYY
#	GODSPR IS THE SAME AS GODSP ONLY RETURN IS TO THE USER.
#				CAF	VXXNYY
#				TC	BANKCALL
#				CADR	GODSPR
#				...	...		# IMMEDIATE RETURN OF GODSPR
#	GOFLASH DISPLAYS A FLASHING VERB NOUN WITH NO IMMEDIATE RETURN TO THE USER.  3 RETURNS ARE POSSIBLE FORM
#	THE ASTRONAUT (SEE NO. 7 ABOVE).
#				CAF	VXXNYY		# VXX NYY WILL BE A FLASHING VERB NOUN.
#				TC	BANKCALL
#				CADR	GOFLASH
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER OR RECYCLE RETURN
#	GOPERF1 IS ENTERED WITH DESIRED CHECKLIST VALUE IN A.  GOPERF1 WILL DISPLAY THIS VALUE IN R1 BY MEANS OF A
# Page 1340
# 	V01 N25.  A FLASHING PLEASE PERFORM ON CHECKLIST (V50 N25) IS THEN DISPLAYED.  NO IMMEDIATE RETURN IS MADE TO
# 	USER (SEE NO. 7 ABOVE).
#	GOPERF1 BLANKS REGISTERS R2 AND R3
#				CAF	OCTXX		# CODE FOR CHECKLIST VALUE XX
#				TC	BANKCALL
#				CADR	GOPERF1
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER RETURN
#	GOPERF2 IS ENTERED WITH A VARIABLE NOUN AND V01 (V00 FOR N10 OR N11) IN A.  GOPERF2 WILL FIRST DISPLAY THE
# 	REQUESTED NOUN BY MEANS OF A V01NYY OR A V00NYY.  PLEASE PERFORM ON NOUN (V50 NYY) THEN BECOMES A FLASHING
#	DISPLAY.  NO IMMEDIATE RETURN IS MADE TO THE USER (SEE NO. 7 ABOVE).
#	GOPERF2 DOES NOT BLANK ANY REGISTERS
#				CAF	VXXNYY		# VARIABLE NOUN YY. XX=0 OR 01.
#				TC	BANKCALL
#				CADR	GOPERF2
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER RETURN
#	GOPERF3 IS USED FOR A PLEASE PERFORM ON A PROGRAM NUMBER.  THE DESIRED PROGRAM NO. IS ENTERED IN A.  GOPERF3
#	DISPLAYS THE NO. BY MEANS OF A V06 N07 FOLLOWED BY A FLASHING V50 N07 FOR A PLEASE PERFORM.  NO IMMEDIATE RETURN
#	IS MADE TO THE USER (SEE NO. 7 ABOVE).
#	GOPERF3 BLANKS REGISTERS R2 AND R3
#				CAF	DECXX		# REQUEST PERFORM ON PXX
#				TC	BANKCALL
#				CADR	GOPERF3
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER RETURN
#	GOPERF4 IS USED FOR A PLEASE PERFORM ON AN OPTION.  THE DESIRED OPTION IS ENTERED IN A AND STORED IN OPTION1.
#	GOPERF4 DISPLAYS R1 AND R2 BY MEANS OF A V04N06 FOLLOWED BY A FLASHING V50N06 FOR A PLEASE PERFORM.  NO
#	IMMEDIATE RETURN IS MADE TO THE USER (SEE NO. 7 ABOVE).
#	GOPERF4 BLANKS REGISTER R3.
#				CAF	OCTXX		# REQUEST PERFORM ON OPTION XX
#				TC	BANKCALL
#				CADR	GOPERF4
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER RETURN
# Page 1341
#	GODSPRET IS USED TO DISPLAY A VERB NOUN ARRIVING IN A WITH A RETURN TO THE USER AFTER THE DISPLAY HAS BEEN SENT
#	OUT.
#				CAF	VXXXNYY
#				TC	BANKCALL
#				CADR	GODSPRET
#				...	...		# RETURN TO USER.
#	REGODSP IS USED TO DISPLAY A VERB NOUN ARRIVING IN A.  REGODSP IS THE SAME AS GODSP ONLY REGODSP REPLACES AND
# 	ACTIVE NORMAL DISPLAY IF ONE WAS ACTIVE.
#				CAF	VXXNYY
#				TC	BANKCALL
#				CADR	REGODSP
#	REFLASH IS THE SAME AS GOFLASH ONLY REFLASH REPLACES ANY ACTIVE NORMAL DISPLAY IF ONE WAS ACTIVE.
#				CAF	VXXNYY		# VXX NYY WILL BE A FLASHING VERB NOUN
#				TC	BANKCALL
#				CADR	REFLASH
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER RETURN
# 	GOFLASHR IF SAME AS GOFLASH ONLY AN IMMEDIATE RETURN IS MADE TO THE USER'S CALL CADR +4.
#				CAF	VXXNYY
#				TC	BANKCALL
#				CADR	GOFLASHR
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER OR RECYCLE RETURN
#				...	...		# IMMEDIATE RETURN FROM GOFLASHR
#	GOPERF1R IS THE SAME AS GOPERF1 ONLY GOPERF1R HAS AN IMMEDIATE RETURN TO USER'S CALL CADR +4.
#	GOPERF1R BLANKS REGISTERS R2 AND R3
#				CAF	OCTXX		# CODE FOR CHECKLIST VALUE XX.
#				TC	BANKCALL
#				CADR	GOPERF1R
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER RETURN
#				...	...		# IMMEDIATE RETURN FROM GOPERF1R
#	GOPERF2R IS THE SAME AS GOPERF2 ONLY AN IMMEDIATE RETURN IS MADE TO USER'S CALL CADR +4.
# Page 1342
#	GOPERF2R DOES NOT BLANK ANY REGISTERS
#				CAF	VXXXNYY		# VARIABLE NOUN YY REQUESTED.  XX=00 OR 01
#				TC	BANKCALL
#				CADR	GOPERF2R
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER RETURN
#				...	...		# IMMEDIATE RETURN HERE FROM GOPERF2R
# 	GOPERF3R IS THE SAME AS GOPERF3 ONLY AN IMMEDIATE RETURN IS MADE TO USER'S CALL CADR +4.
#	GOPERF3R BLANKS REGISTERS R2 AND R3
#				CAF	PROGXX		# PERFORM PROGRAM XX
#				TC	BANKCALL
#				CADR	GOPERF3R
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER RETURN
#				...	...		# GOPERF3R IMMEDIATELY RETURNS HERE
#	GOPERF4R IS THE SAME AS GOPERF4 ONLY AN IMMEDIATE RETURN IS MADE TO USER'S CALL CADR +4.
#	GOPERF4R BLANKS REGISTER R3.
#				CAF	OCTXX		# REQUEST PERFORM ON OPTIONXX
#				TC	BANKCALL
#				CADR	GOPERF4R
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER RETURN
#				...	...		# IMMEDIATE RETURN TO USER
#	REFLASHR IS THE SAME AS REFLASH ONLY AN IMMEDIATE RETURN IS MADE TO THE USER'S CALL CADR +4.
#				CAF	VXXNYY		# VXX NYY WILL BE A FLASHING VERB NOUN
#				TC	BANKCALL
#				CADR	REFLASHR
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER RETURN
#				...	...		# IMMEDIATE RETURN TO USER
#	REGODSPR IS THE SAME AS REGODSP ONLY A RETURN (IMMEDIATE) IS MADE TO THE USER.
# Page 1343
#				CAF	VXXNYY
#				TC	BANKCALL
#				CADR	REGODSPR
#				...	...		# IMMEDIATE RETURN TO USER
# Page 1344
#	GOMARK IS USED TO DISPLAY A MARK VERB NOUN ARRIVING IN A.  NO RETURN IS MADE TO THE USER.
#	GOXDSP = GOMARK
#				CAF	VXXNYY		# VXXNYY CONTAINS VERB AND NOUN
#				TC	BANKCALL
#				CADR	GOMARK		# OTHER EXTENDED VERBS USE CADR GOXDSP
#	GOMARKR IS THE SAME AS GOMARK ONLY RETURN IS TO THE USER.
#	GOXDSPR = GOMARKR
#				CAF	VXXNYY
#				TC	BANKCALL
#				CADR	GOMARKR		# OTHER EXTENDED VERBS USE CADR GOXDSPR
#				...	...		# IMMEDIATE RETURN OF GOMARKR
#	GOMARKF DISPLAYS A FLASHING MARK VERB NOUN WITH NO IMMEDIATE RETURN TO THE USER.  3 RETURNS ARE POSSIBLE FORM
#	THE ASTRONAUT (SEE NO. 7 ABOVE).
#	GOXDSPF = GOMARKF
#				CAF	VXXNYY		# VXXNYY WILL BE A FLASHING MARK VERB NOUN
#				TC	BANKCALL
#				CADR	GOMARKFR	# OTHER EXTENDED VERBS USE CADR GOXDSPFR
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER OR RECYCLE RETURN
#				...	...		# IMMEDIATE RETURN TO THE USER
#	GOMARK1 IS USED FOR A PLEASE PERFORM ON A MARK REQUEST WITH ONLY 1 ASTRONAUT RETURN TO THE USER.  NO IMMEDIATE
#	RETURN IS MADE.  THE DESIRED MARK PLEASE PERFORM VERB AND DESIRED NOUN IS ENTERED IN A.  GOMARK1 DISPLAYS R1, R2, R
#	MEANS OF A V05NYY FOLLOWED BY A FLASHING V5XNYY FOR A PLEASE PERFORM.  THE ASTRONAUT WILL RESPOND WITH A MARK
#	OR MARK REJECT OR AN ENTER.  THE ENTER IS THE ONLY ASTRONAUT RESPONSE THAT WILL COME BACK TO THE USER.
#				CAF	V5XNYY		# X=1,2,3,4	YY=NOUN
#				TC	BANKCALL
# Page 1345
#				CADR	GOMARK1
#				...	...		# ENTER RETURN
#	*** IF BLANKING DESIRED ON NON-R ROUTINES, NOTIFY DISPLAYER.
#
#	GOMARK1R IS THE SAME AS A GOMARK1 ONLY AN IMMEDIATE RETURN IS MADE TO THE USER'S CALL CADR +2.
#				CAF	V5XNYY		# X=1,2,3,4	YY=NOUN
#				TC	BANKCALL
#				CADR	GOMARK1R
#				...	...		# ASTRONAUT ENTER RETURN
#				...	...		# IMMEDIATE RETURN TO USER
#	GOMARK2 IS THE SAME AS GOMARK1 ONLY 3 RETURNS ARE MADE TO THE USER FROM THE ASTRONAUT.
#				CAF	V5XNYY		# X=1,2,3,4	YY=NOUN
#				TC	BANKCALL
#				CADR	GOMARK2
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER RETURN
#	GOMARK2R IS THE SAME AS GOMARK1R ONLY 3 ASTRONAUT RETURNS ARE MADE TO THE USER.
#				CAF	V5XNYY		# X=0,1,2,3,4	YY=NOUN
#				TCF	BANKCALL
#				CADR	GOMARK24
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER RETURN
#				...	...		# IMMEDIATE RETURN TO THE USER.
#	GOMARK3 IS USED FOR A PLEASE PERFORM ON A MARK REQUEST WITH A 3 COMP. DEC DISPLAY.  THE DESIRED MARK PLEASE
#	PERFORM VERB AND NOUN ARE ENTERED IN A.  GOMARK3 DISPLAYS R1, R2, R3 BY MEANS OF A V06NYY FOLLOWED BY A FLASHING
#	V5XNYY FOR A PLEASE PERFORM.  GOMARK3 HAS 3 ASTRONAUT RETURNS TO THE USER WITH NO IMMEDIATE RETURN.
#				CAF	V5XNYY		# X=1,2,3,4	YY=NOUN
#				TC	BANKCALL
#				CADR	GOMARK3
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
#				...	...		# ENTER RETURN
#	GOMARK4 IS THE SAME AS GOMARK3 ONLY R2 AND R3 ARE BLANKED AND R1 IS DISPLAYED IN OCTAL.
#				CAF	V5XNYY		# X=1,2,3,4	YY=NOUN
#				TC	BANKCALL
#				CADR	GOMARK4
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
# Page 1346
#			...	...			# ENTER RETURN
#	EXDSPRET IS USED TO DISPLAY A VERB NOUN ARRIVING IN A WITH A RETURN MADE TO THE USER AFTER THE DISPLAY HAS BEEN
#	SEND OUT.
#				CAF	VXNYY
#				TC	BANKCALL
#				CADR	EXDSPRET
#				...	...		# RETURN TO USER
#	KLEENEX CLEANS OUT ALL MARK DISPLAYS (ACTIVE AND INACTIVE). A RETURN IS MADE TO THE USER AFTER THE MARK DISPLAYS
#	HAVE BEEN CLEANED OUT.
#				TC	BANKCALL
#				CADR	KLEENEX
#				...	...		# RETURN TO USER
#	MARKBRAN IS A SPECIAL PURPOSE ROUTINE USED FOR SAVING JOB VAC AREAS (SEE DESCRIPTION OF MARKBRAN BELOW).
#				TC	BANKCALL
#				CADR	MARKBRAN
#				...	...		# BAD RETURN IF MARK DISPLAY NOT ACTIVE
#							# (GOOD RETURN TO IMMEDIATE RETURN LOC OF
#							# LAST FLASHING MARK R ROUTINE)
#	PINBRNCH REESTABLISHES THE LAST ACTIVE FLASHING DISPLAY.  IF THERE IS NO ACTIVE FLASHING DISPLAY, THE DSKY IS
#	BLANKED AND CONTROL IS SENT TO ENDOFJOB.
#				TC	POSTJUMP
#				CADR	PINBRNCH
#	PRIODSP IS USED AS A PRIORITY DISPLAY.  IT WILL DISPLAY A GOFLASH TYPE DISPLAY WITH THREE POSSIBLE RETURNS FROM
#	THE ASTRONAUT (SEE NO. 7 ABOVE).
#	THE MAIN PURPOSE OF PRIODSP IS TO REPLACE THE PRESENT DISPLAY WITH A DISPLAY OF HIGHER PRIORITY AND TO
#	PROVIDE A MEANS FOR RESTORING THE OLD DISPLAY WHEN THE PRIORITY DISPLAY
# 	IS RESPONDED TO BY THE ASTRONAUT.
#	THE FORMER DISPLAY IS RESTORED BY AN AUTOMATIC BRANCH TO WAKE UP THE DISPLAY THAT WAS INTERRUPTED BY THE
#	PRIO DISPLAY
#				CAF	VXXNYY		# VXXNYY WILL BE A FLASHING VERB NOUN
#				TC	BANKCALL
#				CADR	PRIODSP
#				...	...		# TERMINATE RETURN
#				...	...		# PROCEED RETURN
# Page 1347
#				...	...		# ENTER OR RECYCLE RETURN
#	PRIODSPR IS THE SAME AS PRIODSP ONLY AN IMMEDIATE RETURN IS MADE TO THE USER'S CALL CADR +4.
#				CAF	VXXNYY		# VXXNYY WILL BE A FLASHING VERB NOUN
#				TC	BANKCALL
#				CADR	PRIODSPR
#				...	...		# TERMINATE ACTION
#				...	...		# PROCEED RETURN
#				...	...		# ENTER OR RECYCLE RETURN
#				...	...		# IMMEDIATE RETURN
#	PRIOLARM DOES A V05N09 PRIODSPR.
#
#	CLEANDSP CLEANS OUT ALL NORMAL DISPLAYS (ACTIVE AND INACTIVE).  A RETURN IS MADE TO THE USER AFTER NORMAL
#	DISPLAYS ARE CLEANED OUT.
#				TC	BANKCALL
#				CADR	CLEANDSP
#				...	...		# RETURN TO USER
# Page 1348
#
# GENERAL INFORMATION
# -------------------
#
# ALARM OR ABORT EXIT MODE --
#	PRIOBORT	TC	ABORT
#			OCT	1502
#
#	PRIOBORT IS BRANCHED TO WHEN (1) A NORMAL DISPLAY IS REQUESTED AND ANOTHER NORMAL DISPLAY IS ALREADY ACTIVE
#	(REFLASH AND REGODSP ARE EXCEPTIONS) OR (2) A PRIORITY DISPLAY IS REQUESTED WHEN ANOTHER PRIORITY DISPLAY IS
#	ALREADY ACTIVE (A PRIORITY WITH LINUS BIT14 IS AN EXCEPTION).
#
# ERASABLE INITIALIZATION REQUIRED --
#	ACCOMPLISHED BY FRESH START --	1.  FLAGWRD4 (USED EXCLUSIVELY BY DISPLAY INTERFACE ROUTINES)
#					2.  NVSAVE = NORMAL VERB AND NOUN REGISTER.
#					3.  EBANKTEM = NORMAL INACTIVE FLAGWORD (ALSO CONTAINS NORMALS EBANK).
#					5.  R1SAVE = MARKBRAN CONTROL WORD
#					4.  RESTREG = PRIORITY 30 AND SUPERBANK 3.
#
# OUTPUT --
#	NVWORD = PRIO VERB AND NOUN
#	NVWORD +1 (MARKNV) = MARK VERB AND NOUN
#	NVWORD +2 (NVSAVE) = NORMAL VERB AND NOUN
#	DSPFLG (EBANKSAV) = PRIO FLAGWORD (INCLUDING EBANK)
#	DSPFLG +1 (MARKEBAN) = MARK FLAGWORD (INCLUDING EBANK)
#	DSPFLG +2 (EBANKTEM) = NORMAL FLAGWORD (INCLUDING EBANK)
#	CADRFLSH = PRIO USER'S CALL CADR +1 LOCATION
#	CADRFLSH +1 (MARKFLSH) = MARK USER'S CALL CADR +1 LOCATION
#	CADRFLSH +2 (TEMPFLSH) = NORMAL USER'S CALL CADR +1 LOCATION
#	PRIOTIME = TIME EACH PRIO REQUEST FIRST SENT OUT
#	OPTION1 = DESIRED OPTION FROM GOPERF4
#	FLAGWRD4 = BIT INFO FOR CONTROL OF ALL DISPLAY ROUTINES
#	DSPTEM1 = R1 INFO FOR ASTRONAUT FROM PERFORM DISPLAYS (NORMAL)
#
# SUBROUTINES USED -- NVSUB, FLAGUP, FLAGDOWN, ENDOFJOB, BLANKSUB, ABORT, JOBWAKE, JOBSLEEP, FINDVAC, PRIOCHNG,
#	JAMTERM, NVSUBUSY, FLASHON, ENDIDLE, CHANG1, BANKJUMP, MAKECADR, NOVAC
#
# DEBRIS -- (STORED INTO)
#	TEMPORARY TEMPORARIES -- A, Q, L, MPAC +2, MPAC +3, MPAC +4, MPAC +5, MPAC +6, RUPREG2, RUPTREG3, CYL,
#		EBANK, RUPTREG4, LOC, BANKSET, MODE, MPAC, MPAC +1, FACEREG(?)
#	ERASABLES (SHARED AND USED WITH OTHER PROGRAMS) -- CADRSTORE, DSPLIST, LOC, DSPTEM1, OPTION1
#	ERASABLES (USED ONLY BY DISPLAY ROUTINES) -- NVWORD,+1,+2, DSPFLAG,+1,+2, CADRFLSH,+1,+2, PRIOTIME, FLAGWRD4,
# Page 1349
#		R1SAVE, MARK2PAC
#
# DEBRIS -- (USED BUT NOT STORED INTO) -- NOUNREG, VERBREG, LOCCTR, MONSAVE1
#
# FLAGWORD DESCRIPTIONS --
#	FLAGWRD4 -- SEE DESCRIPTION UNDER LOG SECTION ERASABLE ASSIGNMENTS
#
#	DSPFLG, DSPFLG+1, DSPFLG+2
#	--------------------------
#	BITS 1	BLANK R1
#	     2	BLANK R2
#	     3	BLANK R3
#	     4	FLASHING DISPLAY REQUESTED
#	     5	PERFORM DISPLAY REQUESTED
#	     6	-----			EXDSPRET		GODSPRET
#	     7	PRIO DISPLAY		-----			-----
#	     8	-----			DEC MARK PERFORM	-----
#	     9	EBANK
#	    10	EBANK
#	    11	EBANK
#	    12	-----			-----			V99PASTE
#	    13	2ND PART OF PERFORM
#	    14	REFLASH OR REDO		-----			REFLASH OR REDO
#	    15	-----			MARK REQUEST		-----
#
# RESTARTING DISPLAYS --
#
# RULES FOR THE DSKY OPERATOR --
#	1.  PROCEED AND TERMINATE SERVE AS RESPONSES TO REQUESTS FOR OPERATOR RESPONSE (FLASHING Y/N).  AS LONG
#	    AS THERE IS ANY REQUEST AWAITING OPERATOR RESPONSE, ANY USE OF PROCEED OR TERMINATE WILL SERVE AS
#	    RESPONSES TO THAT REQUEST.  CARE SHOULD BE EXERCISED IN ATTEMPTING TO KILL AN OPERATOR INITIATED MONITOR
#	    WITH PROCEED AND TERMINATE FOR THIS REASON.
#	2.  THE ASTRONAUT MUST RESPOND TO A PRIORITY DISPLAY NO SOONER THAN 2 SECONDS FROM THE TIME THE
#	    PROGRAM SENT OUT THE REQUEST FOR OPERATOR RESPONSE (THE ASTRONAUT WOULD SEE THIS DISPLAY FOR LESS TIME
#	    DUE TO TIME IT TAKES TO GET DISPLAY SENT OUT.)  IF THE ASTRONAUT RESPONDS TOO SOON, THE PRIORITY DISPLAY
#	    IS SENT OUT AGAIN -- AND AGAIN UNTIL AN ACCUMULATED 2 SECS FROM THE TIME THE FIRST PRIORITY DISPLAY
#	    OUT.  THE SAME 2 SEC. DELAY WILL OCCUR AT 163.84 SECS OR IN ANY MULTIPLE OF THAT TIME DUE TO PROGRAM
#	    CONSIDERATION.
#	3.  KEY RELEASE BUTTON --
#	    A)  IF THE KEY RELEASE LIGHT IS ON, IT SIMPLY RELEASES THE KEYBOARD AND DISPLAY FOR INTERNAL USE.
#	    B)  IF THE KEY RELEASE LIGHT IS OFF, AND IF SOME REQUEST FOR OPERATOR RESPONSE (FLASHING V/N) IS STILL
#	        AWAITING RESPONSE THEN IT RE-ESTABLISHES THE DISPLAYS THAT ORIGINALLY REQUESTED RESPONSE.
#	    IF AN OPERATOR WANTS THEREFORE TO RE-ESTABLISH BUT CONDITION (A) IS ENCOUNTERED, A SECOND DEPRESSION OF
#	    KEY RELEASE BUTTON MAY BE NECESSARY.
#	4.  IT IS IMPORTANT TO ANSWER ALL REQUESTS FOR OPERATOR RESPONSE.
#	5.  IT IS ALWAYS GOOD PRACTICE TO TERMINATE AN EXTENDED VERB BEFORE ASKING FOR ANOTHER ONE OR THE SAME ONE
#	    OVER AGAIN.
#
# SPECIAL CONSIDERATONS --
# Page 1350
#	1.  MPAC +2 SAVED ONLY IN MARK DISPLAYS
#	2.  GODSP(R), REGODSP(R), GOMARK(R) ALWAYS TURN ON THE FLASH IF ENTERED WITH A PASTE VERB REQUEST.
#	3.  ALL NORMAL DISPLAYS ARE RESTARTABLE EXCEPT GODSP(R), REGODSP(R)
#	4.  ALL EXTENDED VERBS WITH DISPLAYS SHOULD START WITH A TC TESTXACT AND FINISH WITH A TC ENDEXT.
#	5.  GODSP(R) AND REGODSP(R) MUST BE IN THE SAME EBANK AND SUPERBANK AS THE LAST NORMAL DISPLAY RESTARTED
#	    BY A .1 RESTART PHASE CHANGE.
#	6.  IN ORDER TO SET UP A NON DISPLAY .1 RESTART POINT, THE USER MUST MAKE CERTAIN THAT RESTREG CONTAINS THE
#	    CORRECT PRIORITY AND SUPERBANK AND THAT EBANKTEM CONTAINS THE CO
#	7.  IF CLEANDSP IS RESTARTED VIA A .1 PHASE CHANGE, CAF ZERO SHOULD BE EXECUTED BEFORE THE TC BANKCALL.

# Page 1351
# CALLING SEQUENCE FOR BLANKING
#		CAF	BITX		# X=1,2,3 BLANK R1,R2,R3 RESPECTIVELY
#		TC	BLANKET
#		...	...		# RETURN TO USER HERE
# IN ORDER TO USE BLANKET CORRECTLY, THE USER MUST USE A DISPLAY ROUTINE THAT ENDS IN R FIRST FOLLOWED BY THE CALL
# TO BLANKET AT THE IMMEDIATE RETURN LOC.
		BLOCK	02
		SETLOC	FFTAG4
		BANK

		COUNT*	$$/DSPLA
BLANKET		TS	MPAC +6
		CS	PLAYTEM4
		MASK	MPAC +6
		INDEX	MPAC +5
		ADS	PLAYTEM4

		TC	Q

ENDMARK		TC	POSTJUMP
		CADR	MARKEND

CLEARMRK	CAF	ZERO
		TS	EXTVBACT

	+2	INHINT
		CS	XDSPBIT
		MASK	FLAGWRD4
		TS	FLAGWRD4

		RELINT
		TC	Q

# *** ALL EXTENDED VERB ROUTINES THAT HAVE AT LEAST ONE FLASHING DISPLAY MUST TCF ENDMARK OR TCF ENDEXT WHEN
# FINISHED.

		BANK	10
		SETLOC	DISPLAYS
		BANK

		COUNT*	$$/DSPLA

# NTERONLY IS USED TO DIFFERENTIATE THE MARK ROUTINE WITH ONLY ONE RETURN TO THE USER FROM THE MARKING ROUTINE WITH
# 3 RETURNS TO THE USER.  THIS ROUTINE IS ONLY USED BY GOMARK1 AND GOMARK1R.

MARKEND		TC	CLEARMRK
		TCF	MARKOVER

GOMARK		TS	PLAYTEM1	# ENTRANCE FOR MARK GODSP

# Page 1352
GOMARS		CAF	BIT15		# BIT15 SET FOR ALL MARK REQUESTS
		TCF	GOFLASH2

KLEENEX		CAF	ZERO		# CLEAN OUT EXTENDED VERBS
GOMARKF		TS	PLAYTEM1	# ENTRANCE FOR MARK GOFLASH

		CAF	MARKFMSK	# MARK, FLASH
		TCF	GOFLASH2

GOMARK2		TS	PLAYTEM1	# MARK GOPERFS-3 AST. RETURNS
MARKFORM	CAF	MPERFMSK	# MARK, PERFORM, FLASH
		TCF	GOFLASH2

GOMARK3		TS	PLAYTEM1	# USED FOR 3COMP DECIMAL PERFORM
		CAF	MARK3MSK
		TCF	GOFLASH2

GOMARK4		TS	PLAYTEM1
		CAF	MARK4MSK	# MARK,PERFORM,FLASH,BLANK
		TCF	GOFLASH2

GOMARKR		TS	PLAYTEM1	# ENTRANCE FOR MARK GODSPR

		CAF	BIT15
		TCF	GODSPR2

GOMARKFR	TS	PLAYTEM1	# ENTRANCE FOR MARK GOFLASHR

		CAF	MARKFMSK
		TCF	GODSPRS

GOMARK2R	TS	PLAYTEM1	# MARK GOPERFS-3 AST. RETS+ IMMEDIATE RET.
		CAF	MPERFMSK	# MARK, PERFORM, FLASH
		TCF	GODSPRS

	-1	AD	PRIO13
GOMARK3R	TS	PLAYTEM1
		CAF	MARK3MSK
		TCF	GODSPRS

MAKEMARK	CAF	ONE
		TC	COPIES

		CA	FLAGWRD4	# IS NORM OR PRIO BUSY OR WAITING
		MASK	OCT34300
		CCS	A
		TCF	CHKPRIO

		CA	FLAGWRD4	# IS MARK SLEEPING DUE TO ASTRO BUSY?
		MASK	MRKNVBIT

# Page 1353
		EXTEND
		BZF	MARKPLAY	# NO

		TCF	ENDOFJOB

MARKPLAY	INHINT
		CS	FIVE		# RESET MARK OVER NORM, SET MARK
		MASK	FLAGWRD4
		AD	ONE
		TS	FLAGWRD4
		RELINT

GOGOMARK	CS	MARKFLAG	# PERFORM
		MASK	BIT5
		CCS	A
		TCF	MARKCOP
		CS	MARKNV
		TS	MARKNV

MARKCOP		CAF	ONE		# MARK INDEX
		TCF	PRIOPLAY

COPYTOGO	CA	MPAC2SAV
		TS	MPAC +2

COPYPACS	INDEX	COPINDEX
		CAF	PRIOOCT
		TS	GENMASK

		INDEX	COPINDEX
		CA	EBANKSAV	# Was CAF --- RSB 2004.
		TS	TEMPOR2		# ACTIVE EBANK AND FLAG

		TS	EBANK

		TC	Q

# PINCHEK CHECKS TO SEE IF THE CURRENT MARK REQUEST IS MADE BY THE ASTRONAUT WHILE INTERUPTING A GOPLAY DISPLAY
# (A NORMAL OR A PRIO).  IF THE ASTRONAUT TRIES TO MARK DURING A PRIO, THE CHECK FAIL LIGHT GOES ON AND THE MARK
# REQUEST IS ENDED.  IF HE TRIES TO MARK DURING A NORM, THE MARK IS ALLOWED.  IN THIS CASE THE NORM IS PUT TO SLEEP
# UNTIL ALL MARKING IS FINISHED.
#
# IF THE MARK REQUEST COMES FROM THE PROGRAM DURING A TIME THE ASTRONAUT IS NOT INTERRUPTING A NORMAL OR A
# PRIO, THE MARK REQUEST IS PUT TO SLEEP UNTIL THE PRESENT ACTIVE DISPLAY IS RESPONDED TO BY THE ASTRONAUT.

CHKPRIO		CA	FLAGWRD4	# MARK ATTEMPT DURING PRIO
		MASK	OCT24100
		CCS	A
		TCF	MARSLEEP

# Page 1354
		CS	FLAGWRD4
		MASK	MKOVBIT		# SET MARK OVER NORM
		INHINT
		ADS	FLAGWRD4

		TCF	SETNORM

MARKPERF	CA	MARKNV
		MASK	VERBMASK
		TCF	NV50DSP

GODSP		TS	PLAYTEM1

GODSP2		CAF	ZERO
		TCF	GOFLASH2

GODSPRET	TS	PLAYTEM1	# ENTRANCE FOR A GODSP WITH A PASTE

		CAF	BIT6		# SET BIT6 TO GO BACK TO USER AFTER NVSUB
		TCF	GOFLASH2

GODSPR		TS	PLAYTEM1

GODSPR1		CAF	ZERO
GODSPR2		TS	PLAYTEM4

		CAF	ZERO		# * DON'T MOVE
		TCF	GODSPRS1

# CLEANDSP IS USED FOR CLEARING OUT A NORMAL DISPLAY THAT IS PRESENTLY ACTIVE OR A NORMAL DISPLAY THAT IS
# SET UP TO BE STARTED OR RESTARTED.
#
# NORMALLY THE USER WILL NOT NEED TO USE THIS ROUTINE SINCE A NEW NORMAL DISPLAY AUTOMATICALLY CLEARS OUT AN
# OLD DISPLAY.
#
# CALLING SEQUENCE FOR CLEANDSP --
#
#		TC	BANKCALL
#		CADR	CLEANDSP

CLEANDSP	CAF	ZERO
REFLASH		TS	PLAYTEM1

		CAF	REDOMASK	# FLASH AND PERMIT
		TCF	GOFLASH2

REFLASHR	TS	PLAYTEM1

		CAF	REDOMASK	# FLASH AND PERMIT
		TCF	GODSPRS

# Page 1355
REGODSP		TS	PLAYTEM1

		CAF	BIT14
		TCF	GOFLASH2

REGODSPR	TS	PLAYTEM1

		CAF	BIT14
		TCF	GODSPR2

CLOCPLAY	TS	PLAYTEM1
		CAF	CLOCKCON
		TCF	GOFLASH2

GOFLASH		TS	PLAYTEM1

		CAF	BIT4		# LEAVE ONLY FLASH BIT SET
GOFLASH2	TS	PLAYTEM4

		TC	SAVELOCS

		RELINT

		TCF	MAKEPLAY	# BRANCH DIRECT WITH NO SEPARATE JOB CALL

PRIODSPR	TS	PLAYTEM1

		CAF	BITS7+4
		TCF	GODSPRS

PRIODSP		TS	PLAYTEM1

SETPRIO		CAF	BITS7+4
		TCF	GOFLASH2

MAKEPRIO	CAF	ZERO
		TS	COPINDEX

		TC	LINUSCHR
		TCF	HIPRIO		# LINUS RETURN
		CA	FLAGWRD4
		MASK	OCT20100	# IS PRIO IN ENDIDLE OR BUSY
		CCS	A
		TCF	PRIOBORT	# YES, ABORT

HIPRIO		CA	FLAGWRD4	# MARK ACTIVE
		MASK	OCT40400
		EXTEND
		BZF	ASKIFNRM	# NO

# Page 1356
SETMARK		CAF	ZERO
		TCF	JOBXCHS

ASKIFNRM	CA	FLAGWRD4	# NORMAL ACTIVE
		MASK	OCT10200	# BITS 13+8
		EXTEND
		BZF	OKTOCOPY	# NO

SETNORM		CAF	ONE
		TCF	JOBXCHS

OKTOCOPY	TC	COPYNORM
		TC	WITCHONE

		TC	JOBWAKE

		TC	XCHTOEND

REDOPRIO	CA	TIME1		# SAVE TIME PRIODSP SENT OUT
		TS	PRIOTIME

KEEPPRIO	CAF	ZERO		# START UP PRIO DISPLAY
		TCF	PRIOPLAY

MAKEPLAY	CA	PRIORITY	# SAVE USER'S PRIORITY
		MASK	PRIO37
		TS	USERPRIO

		CAF	PRIO33		# RAISE PRIORITY FOR FAST JOBS AFTER WAKE
		TC	PRIOCHNG

		CA	PLAYTEM4	# IS IT MARK OR PRIO OR NORM
		MASK	BITS15+7
		CCS	A
		TCF	MAKEPRIO	# ITS PRIO
		TCF	IFLEGAL
		TCF	MAKEMARK	# ITS MARK

IFLEGAL		CAF	TWO
		TS	COPINDEX

		TC	LINUSCHR

		TCF	OKTOPLAY	# LINUS RETURN
		CS	EBANKTEM
		MASK	BIT4
		CCS	A
		TCF	OKTOPLAY	# NO

		CA	FLAGWRD4	# WAS NORM ASLEEP
# Page 1357
		MASK	NBUSMASK	# ARE ANY NORMS ASLEEP
		EXTEND
		BZF	OKTOPLAY	# NO

PRIOBORT	TC	BAILOUT
		OCT	31502

OKTOPLAY	TC	COPIES2

		CA	USERPRIO
		EXTEND
		ROR	SUPERBNK
		TS	RESTREG

		CA	FLAGWRD4	# PRIO OR MARK GOING
		MASK	PMMASK
		CCS	A
		TCF	GOSLEEPS	# MARK GOING

		TCF	+2
		TCF	GOSLEEPS

# COULD PUT NORM BUSY CHECK HERE TO SAVE TIME

		TC	WITCHONE	# IS IT NVSUB BUSY, ENDIDLE OR NOONE
		TC	JOBWAKE

		TC	XCHTOEND

PLAYJUM1	CAF	TWO
PRIOPLAY	TS	COPINDEX

		TCF	GOPLAY

EXDSPRET	TS	PLAYTEM1

		CAF	BIT15+6
		TCF	GOFLASH2

GOPERF1		TS	NORMTEM1	# STORE DESIRED CHECKLIST VALUE
		CAF	V01N25		# USED TO DISPLAY CHECKLIST VALUE IN R1

GOPERFS		TS	PLAYTEM1

		CAF	PERFMASK	# LEAVE ONLY FLASH, PERFORM, BLANKING
		TCF	GOFLASH2

GOPERF2		TS	PLAYTEM1	# DESIRED VERB-NOUN TO DISPLAY R1,R2,R3

		CAF	PERF2MSK
		TCF	GOFLASH2

# Page 1358
GOPERF4		TC	PURRS4

		TCF	GOFLASH2

GOFLASHR	TS	PLAYTEM1

		CAF	BIT4		# LEAVE ONLY FLASH BIT SET
GODSPRS		TS	PLAYTEM4

		CAF	THREE

GODSPRS1	INHINT			# IMMEDIATE RETURN IS CALL CADR +4
		TS	RUPTREG3

		CA	PRIORITY	# MAKE DISPLAY ONE HIGHER THAN USER
		MASK	PRIO37
		TS	NEWPRIO

		CA	PLAYTEM4	# IS THIS A FLASHING R DISPLAY
		MASK	BIT4
		CCS	A
		TCF	VACDSP		# YES, MAKE DSPLAY JOB A VAC
		CA	NEWPRIO		# NO, MAKE DSPLAY JOB A NOVAC
		TC	NOVAC
		EBANK=	WHOCARES
		2CADR	MAKEPLAY

		TCF	BOTHJOBS

VACDSP		CA	BBANK
		EXTEND
		ROR	SUPERBNK
		TS	L
		CAF	MAKEGEN
		TC	SPVAC

BOTHJOBS	TC	SAVELOCS	# COPY TEMPS INTO PERMANENT REGISTERS

		EXTEND			# SAVE NVWORD AND USER'S MPAC +2
		DCA	MPAC +1
		INDEX	LOCCTR
		DXCH	MPAC +1

		EXTEND			# SAVE USER'S CADR, FLAGS AND EBANK
		DCA	MPAC +3
		INDEX 	LOCCTR
		DXCH	MPAC +3

		CA	LOCCTR
		TS	MPAC +5
# Page 1359
		TC	SAVELOCR
		RELINT

		TCF	BANKJUMP	# CALL CADR +4

GOPERF1R	TS	NORMTEM1	# DESIRED CHECKLIST VALUE

		CAF	V01N25		# DISPLAYS CHECKLIST VALUE IN R1

GOPERFRS	TS	PLAYTEM1

		CAF	PERFMASK	# LEAVE ONLY FLASH, PERFORM, BLANKING
		TCF	GODSPRS

GOPERF2R	TS	PLAYTEM1	# DESIRED VERB-NOUN TO DISPLAY R1,R2,R3

		CAF	PERF2MSK
		TCF	GODSPRS

GOPERF4R	TC	PURRS4

		TCF	GODSPRS

PURRS4		TS	OPTION1		# DESIRED OPTION CODE

		CAF	V04N06
		TS	PLAYTEM1

		CAF	PERF4MSK	# FLASH, PERFORM AND EBANK R3
		TC	Q

SAVELOCS	INHINT

		CS	OCT3400		# EBANK BITS
		MASK	PLAYTEM4
		AD	EBANK
		TS	PLAYTEM4

SAVELOCR	LXCH	Q

		TC	MAKECADR
		TS	PLAYTEM3

		AD	RUPTREG3	# NOT USED FOR NON R ROUTINES
		TC	L

COPYNORM	CAF	ZERO
COPIES		TS	COPINDEX
COPIES2		INHINT
		CA	PLAYTEM4	# FLAGWORD

# Page 1360
		INDEX	COPINDEX
		TS	EBANKSAV	# EQUIV TO DSPFLG

		MASK	CADRMASK	# FLASH AND GODSPRET
		EXTEND
		BZF	SKIPADD

		CA	PLAYTEM3
		INDEX	COPINDEX
		TS	CADRFLSH

SKIPADD		CA	PLAYTEM1	# VERB NOUN
		INDEX	COPINDEX
		TS	NVWORD

		TCF	RELINTQ

GOSLEEPS	INDEX	COPINDEX
		CA	PRIOOCT
		MASK	WAITMASK
		TC	UPENT2
WAITMASK	OCT	3004
		CS	ONE
		AD	COPINDEX
		TS	FACEREG

XCHSLEEP	INDEX	FACEREG
		CAF	WAKECADR
		INHINT
		TC	JOBWAKE		# FIND CADR IN JOB AREA

		TC	XCHTOEND	# CAUSES AWAKENED JOB TO GO TO ENDOFJOB

		INDEX	FACEREG		# REPLACE SAME CADR BUT NEW JOB AREA
		CAF	WAKECADR
		TCF	JOBSLEEP

JOBXCHS		TS	FACEREG		# CONTROLS TYPE OF DISPLAY PUT TO SLEEP
		TC	WITCHONE
		TC	JOBWAKE
		CA	FACEREG
		INDEX	LOCCTR
		TS	FACEREG

		CAF	XCHQADD
		TC	XCHNYLOC

		INDEX	FACEREG
		CA	MARKOCT
		MASK	IDLESLEP

# Page 1361
		TC	DOWNENT2
IDLEMASK	OCT	74004		# * DON'T MOVE

		INDEX	FACEREG		# BIT SHOWS PRIO INTERRUPTED NORM OR MARK
		CA	BIT5		# BIT5 FOR MARK, BIT4 FOR NORMAL
		AD	FOUR
		TC	UPENT2		# FLAG ROUTINE DOES RELINT
XCHQADD		GENADR	XCHSLEEP	# * DON'T MOVE
		CA	FLAGWRD4
		MASK	MKOVBIT		# MARK OVER NORM?
		CCS	A
GENMARK		TC	MARKPLAY	# USED AS GENADR FOR JOBWAKE
		TCF	OKTOCOPY

MARKWAKE	CAF	ZERO
WAKEPLAY	TS	TEMPOR2

		INDEX	TEMPOR2
		CA	BITS5+11
		AD	FOUR
		TC	DOWNENT2
MARKFMSK	OCT	40010		# *** DON'T MOVE

		INDEX	TEMPOR2
		CAF	WAKECADR
		INHINT
		TC	JOBWAKE

		TCF	ENDRET

# ALL .1 RESTARTS BRANCH DIRECTLY TO INITDSP.  NORMAL DISPLAYS ARE THE ONLY DISPLAYS ALLOWED TO USE .1 RESTARTS
# INITDSP FIRST RESTORES THE EBANK AND THE SUPERBANK TO THE MOST RECENT NORMAL EBANK AND SUPERBANK.
#
# IF THE MOST RECENT NORMAL DISPLAY REQUEST WAS NOT FINISHED, CONTROL IS SENT BACK TO TEH LAST NORMAL USER.
# OTHERWISE THE NORMAL DISPLAY SET UP IN THE NORMAL DISPLAY REGS IS STARTED UP IMMEDIATELY.

INITDSP		CA	EBANKTEM	# RESTORE MOST RECENT NORMAL EBANK
		TS	EBANK

		CA	RESTREG		# SUPERBANK AND JOB PRIORITY
		TC	SUPERSW		# RESTORE SUPERBANK

		MASK	PRIO37
		TC	PRIOCHNG

		CS	THREE
		AD	TEMPFLSH
		TCF	BANKJUMP

PINBRNCH	RELINT			# FOR GOPIN USERS
		CA	MARK2PAC	# NEEDED TO SAVE MPAC +2 FOR MARK USERS
# Page 1362
		TS	MPAC +2		# ONLY

		CA	FLAGWRD4	# PINBRANCH CONDITION
		MASK	PINMASK
		CCS	A
		TCF	+3
		TCF	ERASER		# ** NOTHING IN ENDIDLE
		TCF	MARKPLAY

NORMBNCH	TC	UPFLAG		# SET PINBRANCH BIT
		ADRES	PINBRFLG

		CAF	PRIODBIT	# PRIO INTERRUPTED
		MASK	FLAGWRD4
		CCS	A
		TCF	KEEPPRIO

		TCF	PLAYJUM1

NVDSP		TC	COPYPACS

		CA	TEMPOR2		# SET UP BLANK BITS FOR NVMONOPT IN CASE
		MASK	SEVEN		# USER REQUESTS BLANKING MONITOR
		TS	L

		CS	BIT13
		INDEX	COPINDEX
		MASK	DSPFLG
		INDEX	COPINDEX
		TS	DSPFLG

		MASK	BIT8		# BIT8 SET IF DEC MARK PERFORM DISPLAY
		TS	TEM1

		CA	MPAC +2
		TS	MPAC2SAV

		TS	MARK2PAC	# * FOR DISK ONLY *
		INDEX	COPINDEX
		CCS	NVWORD
		TCF	NVDSP1
		TCF	CLEANEND
		CS	MARKNV
		TS	MARKNV		# IN CASE MARKPLAY AWAKENED AFTER SLEEPING
		MASK	LOW7
		AD	V05N00M1
		AD	TEM1
NVDSP1		AD	ONE
NV50DSP		TC	NVMONOPT
		TCF	REST		# IF BUSY

# Page 1363
		TC	FLASHOFF	# IN CASE OF EXTENDED VERB NON-FLASH

		TC	COPYTOGO	# MPACS DESTROYED BY NVSUB
		TC	DOWNFLAG	# UNSET SLEEPING BITS
		ADRES	MRKNVFLG
		TC	DOWNFLAG
		ADRES	NRMNVFLG
		TC	DOWNFLAG
		ADRES	PRONVFLG
BLANKCHK	CA	TEMPOR2		# BLANK BITS 1,2,3 IF SET
		TC	BLANKSUB
		TCF	NVDSP
PERFCHEK	CAF	BIT5		# BIT5 FOR PERFORM
		MASK	TEMPOR2
		CCS	A		# IS THIS A GOPERF DISPLAY
		TCF	1STOR2ND	# YES

GOANIDLE	CAF	BIT4
		MASK	TEMPOR2
		CCS	A
		TCF	FLASHSUB	# IT IS

		CS	TEMPOR2		# IS THIS A GODSPRET
		MASK	BIT6
		CCS	A
		TCF	ISITN00

		INDEX	COPINDEX
		CA	CADRFLSH
		TS	MPAC +3
		TCF	ENDIT

ISITN00		INDEX	COPINDEX	# IS THIS A PASTE
		CA	NVWORD
		MASK	LOW7		# CHECK MADE FOR PINBRNCH AND PRIO ON MARK
		EXTEND
		BZF	FLASHSUB	# YES, ASSUME PASTE ALWAYS ON FLASH

		TCF	ENDOFJOB	# NOT FLASH, NOT GOPERF, THEREFORE EXIT

1STOR2ND	CA	TEMPOR2
		MASK	BIT13
		CCS	A
		TCF	GOANIDLE	# SECOND

		CA	BIT13
		INDEX	COPINDEX
		ADS	DSPFLG

		ZL
# Page 1364
		EXTEND			# IS IT MARK
		BZMF	MARKPERF	# YES

		MASK	BIT12
		EXTEND
		BZF	V50PASTE
		CS	NVWORD1		# NVOWRD1= -0 IS V97.  NVWORD1= -400 IS V99
		AD	V97N00
		TCF	NV50DSP
V50PASTE	CAF	V50N00
		TCF	NV50DSP		# DISPLAY SECOND PART OF GOPERF

WITCHONE	CS	BIT5		# TURN OFF KEY RELEASE LIGHT
		EXTEND
		WAND	DSALMOUT

		CA	FLAGWRD4
		MASK	NVBUSMSK	# IS IT NVSUB ALEEP
		CCS	A
		CAF	ONE
		TS	L
		CAF	ZERO
		INDEX	L
		XCH	CADRSTOR

		INHINT
		TC	Q

XCHTOEND	CAF	ENDINST		# TC ENDOFJOB REPLACES GENADR IN LOC FOR
XCHNYLOC	XCH	LOCCTR		# WAS THIS ADDRESS SLEEPING
		EXTEND
		BZMF	RELINTQ		# NO
		XCH	LOCCTR		# YES
		INDEX	LOCCTR
		TS	LOC

RELINTQ		RELINT
		TC	Q		# BACK TO USER

CLEANEND	CAF	PRIO32		# ONE LOWER THAN DISPLAYS SLEEPING
		TC	FINDVAC
		EBANK=	NVSAVE
		2CADR	JAMTERM

		TCF	FLASHSUB +1

ISITPRIO	CA	FLAGWRD4
		MASK	ITISMASK	# IS PINBRFLG, MARKIDFLG SET
		EXTEND
# Page 1365
		BZF	PRIOBORT
		TCF	ENDOFJOB

REST		CCS	CADRSTOR	# IS SOMEONE IN ENDIDLE
		TCF	ENDOFJOB	# YES
		TCF	RESTSLEP

		TCF	ENDOFJOB

RESTSLEP	CA	GENMASK		# SET NVSLEEP BITS
		MASK	ASTROMSK
		TC	UPENT2
OCT24100	OCT	24100		# *** DON'T MOVE

		INDEX	COPINDEX
		CAF	NVCADR
		TC	NVSUBUSY	# BUSY OR ABORT IF ILLEGAL

FLASHSUB	TC	FLASHON

		CA	COPINDEX	# COPINDEX DESTROYED BY ENDIDLE
		TS	COPMPAC

		CA	GENMASK
		MASK	IDLEMASK
		TC	UPENT2
ITISMASK	OCT	40040		# *** ENDIDLE ALLOW *** DON'T MOVE

		CA	R1SAVE		# IS THIS A REPEAT AND RETURN DISPLAY
		INDEX	COPINDEX
		MASK	BIT3
		CCS	A
		TCF	UNSETR1		# YES

		CCS	CADRSTOR	# SEE IF SOMEONE ALREADY IN ENDIDLE
		TCF	ISITPRIO
		TCF	+2
		TCF	ISITPRIO

		TC	ENDIDLE
IDLERET1	TCF	TERMATE

		TCF	PROCEED		# ENDIDLE RETURNS HERE ON PROCEED

		CS	LOWLOAD
		AD	MPAC		# VERBREG
		EXTEND
		DIM	A
		EXTEND
		BZF	LOADITIS	# V21 OR V22 OR V23 ON DSKY

# Page 1366
OKTOENT		CAF	TWO
ENDOUT		TS	OUTHERE

		CA	FLAGWRD4	# CHECK NATURE OF ENDIDLE RETURN
		MASK	OCT60000
		CCS	A
		TCF	TIMECHEK	# PRIO ENDIDLE RETURN
		TCF	NORMRET		# NORMAL ENDIDLE RETURN
		TCF	MARKRET		# MARK ENDIDLE RETURN

TIMECHEK	CS	TIME1
		AD	PRIOTIME
		CCS	A
		COM
		AD	OCT37776
		AD	ONE
		AD	-2SEC
		EXTEND
		BZMF	KEEPPRIO

		TCF	NORMRET

NORMWAKE	CAF	ONE
		TCF	WAKEPLAY

ENDRET		CCS	OUTHERE
		AD	ONE
		TCF	+2		# NORMAL ENDIDLE EXIT
		TCF	ENDOFJOB
		INDEX	COPMPAC
		AD	CADRFLSH
		TS	MPAC +3

		CA	GENMASK		# REMOVE ENDIDLE AND PINBRANCH BITS
		MASK	PINIDMSK
		TC	DOWNENT2
PINIDMSK	OCT	74044		# *** DON'T MOVE

		CS	THREE		# BLANK EVERYTHING EXCEPT MM
		TC	NVSUB
		TCF	+1

ENDIT		CA	USERPRIO	# RETURN TO USER'S PRIORITY
		MASK	PRIO37
		TC	PRIOCHNG
		CA	MPAC +3
		TCF	BANKJUMP

UNSETR1		INDEX	COPINDEX	# RESET REPEAT AND RETURN REQUEST
		CS	BIT3
# Page 1367
		MASK	R1SAVE
		TS	R1SAVE

		CAF	ZERO		# *** 205 ONLY MARKBRAN USERS IN
		TC	SUPERSW		# SUPERBANK 0

	-1	CAF	THREE		# RETURN TO USER'S IMMEDIATE RETURN LOC
IMMEDRET	INDEX	COPINDEX
		AD	CADRFLSH
		TCF	BANKJUMP

TERMATE		CAF	ZERO		# ASTRONAUT TERMINATE (V34) RETURNS TO
		TCF	ENDOUT

LINUSCHR	CS	PLAYTEM4	# IS THIS A LINUS
		MASK	BIT14
		CCS	A
		TCF	Q+1		# NO
		CS	PLAYTEM3	# YES, IS IT ALREADY IN ENDIDLE
		INDEX	COPINDEX
		AD	CADRFLSH
		EXTEND
		BZF	+2		# YES

		TC	Q		# NO
		CCS	DSPLOCK		# IS THE ASTRONAUT BUSY
		TC	ENDOFJOB	# END THE NEW DISPLAY, IT'S ALREADY ACTIVE
		TC	Q

# MORE LOGIC COULD BE INCORPORATED HERE TO MAKE SURE A RECYCLE IS A RECYCLE AND CONVERSELY THAT A LOAD IS A LOAD

PROCEED		CAF	ONE		# ASTRONAUT PROCEED (V33) RETURNS
		TCF	ENDOUT

# LASTPLAY CHECKS TO SEE IF (1) THE LAST NORMAL DISPLAY WAS EITHER INTERRUPTED BY A PRIO OR A MARK (MARK
# COULD ONLY HAPPEN DURING PINBRANCH) OR IF (2) THE LAST NORMAL DISPLAY WAS REQUESTED WHILE A HIGHER PRIORITY
# DISPLAY WAS GOING, RESULTING IN THE NORMAL BEING PUT TO SLEEP.
#
# IF EITHER OF THE ABOVE 2 CONDITIONS EXISTS, THE NORMAL DISPLAY IS AWAKENED TO GO TO PLAYJUM1 WHICH STARTS
# UP THE MOST RECENT VALID NORMAL DISPLAY.  IF THESE 2 CONDITIONS DO NOT EXIST, CONTROL GOES TO PLAYJUM1 WHICH IS
# STARTED IMMEDIATELY WITH THE ASSUMPTION THAT THE MOST RECENT NORMAL DISPLAY IS ALREADY IN ENDIDLE (DURING A
# PINBRNCH) OR THAT A RESTART HAS OCCURRED AND THE DISPLAY CAN BE STARTED AS A .1 RESTART.

MARKRET		CS	SIX
		MASK	FLAGWRD4
		INHINT			# *** MAY MOVE DISPLAY FLAGWORD OUT OF
		TS	FLAGWRD4

		RELINT			# INHINT REALM
		TCF	ENDRET

# Page 1368
MARKOVER	CAF	MINUS1		# RUPTREG2 IS - MEANS ENDOFJOB TO ENDRET
		TS	OUTHERE

		CA	FLAGWRD4	# IS ENDIDFLG SET
		MASK	PRIO30		# IS NORMAL OR PRIO IN ENDIDLE
		CCS	A
		TCF	NORMBNCH

NORMRET		CA	FLAGWRD4	# IS MARK SLEEPING
		MASK	BITS5+11	# OR WAITING
		CCS	A
		TCF	MARKWAKE

		CA	FLAGWRD4	# NO
		MASK	BITS4+10	# IS NORMAL INTERRUPTED OR WAITING
		CCS	A
		TCF	NORMWAKE	# YES

		CA	EBANKTEM	# NO, WAS IT A FLASH REQUEST
		MASK	OCT50		# OR A GODSPRET
		CCS	A
		TCF	ENDRET		# YES
		CA	NVSAVE
		EXTEND
		BZF	ENDRET

		CAF	PRIO15
		INHINT
		TC	NOVAC
		EBANK=	NVWORD
		2CADR	PLAYJUM1

		TCF	ENDRET

MARSLEEP	CA	FLAGWRD4	# IS MARK ALREADY ON
		MASK	BITS5+11
		CCS	A
		TCF	ENDOFJOB	# YES
		TCF	GOSLEEPS

LOADITIS	INDEX	COPMPAC
		CA	NVWORD
		MASK	LOW7
		COM
		AD	MPAC +1		# NOUNREG
		EXTEND
		BZF	OKTOENT		# NO, THEN LOAD IS VALID
		TCF	PINBRNCH	# YES, ACCEPT LOAD BUT ASK FOR LAST AGAIN

# Page 1369
ERASER		CS	THREE		# BLANK EVERYTHING EXCEPT MM
		TC	NVSUB
		TCF	ENDOFJOB
		TCF	ENDOFJOB

PERFMASK	OCT	0036		# FLASH, PERFORM, BLANK R2 AND R3
V01N25		VN	00125
V06N07		VN	00607		# GOPERF3 VN DISPLAY BEFORE V50
V50N00		VN	5000
PERF2MSK	OCT	00030		# FLASH, PERFORM
V04N06		VN	00406
PERF4MSK	OCT	14		# FLASH, BLANK R3
GOAGIN		EQUALS	PINBRNCH
REDOMASK	OCT	20010		# BITS 4 AND 14
MARK3MSK	OCT	40230		# MARK, DECIMAL NOUN, PERFORM, FLASH
MARK4MSK	OCT	40036		# MARK, PERFORM, FLASH, BLANK 2 AND 3
NVCADR		CADR	REDOPRIO
WAKECADR	CADR	MARKPLAY
		CADR	PLAYJUM1

OCT3400		OCT	3400		# EBANK MASK
NBUSMASK	OCT	11210
PMMASK		OCT	66521
VERBMASK	=	MID7		# (OCT 37600)
V05N00M1	OCT	1177		# V05 MINUS ONE
GOXDSP		EQUALS	GOMARK
GOXDSPR		EQUALS	GOMARKR
GOXDSPF		EQUALS	GOMARKF
GOXDSPFR	EQUALS	GOMARKFR
ENDEXT		EQUALS	ENDMARK
MPAC2SAV	EQUALS	BANKSET
NVBUSMSK	OCT	700
ASTROMSK	OCT	704
MPERFMSK	OCT	40030		# BIT 15,5,4 FOR MARK,PERFORM,FLASH
OCT34300	OCT	34300
BITS15+7	OCT	40100
BITS7+4		OCT	110
DSPFLG		EQUALS	EBANKSAV
MARKFLAG	EQUALS	MARKEBAN
SAVEFLAG	EQUALS	EBANKTEM
BITS5+11	OCT	2020		# * DON'T MOVE
BITS4+10	OCT	1010		# * DON'T MOVE
LOWLOAD		DEC	22
BUSYMASK	OCT	77730
CADRMASK	OCT	50
PINMASK		EQUALS	13,14,15
GOPLAY		EQUALS	NVDSP
PRIOSAVE	EQUALS	R1SAVE
COPMPAC		EQUALS	MPAC +3
TEMPOR2		EQUALS	MPAC +4

# Page 1370
OUTHERE		EQUALS	MPAC +5
COPINDEX	EQUALS	LOC
USERPRIO	EQUALS	MODE
GENMASK		EQUALS	MPAC +6
PRIOOCT		OCT	20144		# PRIO
MARKOCT		OCT	42424		# MARK
		OCT	11254		# NORM

IDLESLEP	OCT	74704
OCT67777	OCT	67777
LINUS		EQUALS	BLANKET
FACEREG		EQUALS	MPAC
PLAYTEM1	EQUALS	MPAC +1
PLAYTEM3	EQUALS	MPAC +3
PLAYTEM4	EQUALS	MPAC +4
OCT40420	OCT	40420
MAKEGEN		GENADR	MAKEPLAY
OCT10200	OCT	10200
V97N00		VN	09700		# PASTE FOR V97 OR V99
OCT20100	OCT	20100
CLOCKCON	OCT	24030		# FLASH, PERFORM, V99 OR V97 PASTE, REFLASH
