UNIVERSAL	DPYDEF	DEFINITIONS FOR DPY MODULE



;THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY ONLY BE USED
;  OR COPIED IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE.
;
;COPYRIGHT (C) 1976,1977,1978,1979 BY DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.



;THIS IS THE DEFINITION FILE FOR DPY.  THE DPY MODULE IS CALLED BY LUUOS.
;A STACK POINTER MUST EXIST IN AC 17.  THE FOLLOWING INSTRUCTIONS SHOW
;HOW TO BEGIN TO USE DPY:
;
;	SEARCH	DPYDEF			;GET DEFINITIONS
;
;	MOVE	T1,[PUSHJ P,DPYUUO]	;GET CALLING INSTRUCTION
;	MOVEM	T1,.JB41		;AND SET UP LUUO DISATCH
;
;THEN ANY OF THE LUUOS CAN BE USED.  THE INI$ LUUO MUST BE DONE FIRST.




;GLOBAL SYMBOLS USED TO COMMUNICATE BETWEEN DPY AND OUTSIDE PROGS:


	EXTERN	DPYUUO		;ADDRESS OF ROUTINE TO ENTER DPY
	EXTERN	DPYTAB		;ADDRESS OF TABLE OF VARIABLES



;LUUO DEFINITIONS:


	OPDEF	INI$	[ 1B8]		;INITIALIZE DPY		
	OPDEF	STR$	[ INI$	1,]	;GIVE ASCIZ STRING TO DPY
	OPDEF	CHR$	[ INI$	2,]	;GIVE SINGLE CHARACTER TO DPY
	OPDEF	CHI$	[ INI$	3,]	;GIVE IMMEDIATE CHARACTER TO DPY
	OPDEF	SIZ$	[ INI$	4,]	;SET WINDOW BOUNDARIES
	OPDEF	TAB$	[ INI$	5,]	;SET TAB STOPS
	OPDEF	REF$	[ INI$	6,]	;REFRESH THE SCREEN
	OPDEF	DPY$	[ INI$	7,]	;SHOW CHANGES TO SCREEN
	OPDEF	SET$	[ INI$	10,]	;SET VARIOUS PARAMETERS
	OPDEF	TTY$	[ INI$	11,]	;DO VARIOUS TTY ACTIONS
	OPDEF	LOC$	[ INI$	12,]	;RETURN ADDRESS OF NEXT OUTPUT TO DPY
	OPDEF	ADR$	[ INI$	13,]	;MOVE CURSER TO GIVEN SCREEN LOCATION

;OFFSETS INTO THE INI$ ARGUMENT BLOCK:


	$INCNT==0		;ARGUMENTS FOLLOWING AND FLAGS
	$INADR==1		;ADDRESS OF STORAGE FOR DPY'S DATA
	$INERR==2		;LOCATION TO GO TO ON ERRORS
	$INTTY==3		;TERMINAL TYPE CODE OR POINTER
	$INJFN==4		;JFN OR BUFFER,,CHANNEL FOR OUTPUT
	$INMAX==4		;HIGHEST ARGUMENT


;FLAGS AND FIELDS DEFINED FOR THE VARIOUS LUUOS:


	IN$NCL==400000		;FOR INI$ - DON'T CLEAR SCREEN

	RE$CLR==000001		;FOR REF$ - CLEAR SCREEN FIRST
	RE$NOH==000002		;FOR REF$ - DON'T HOME UP WHEN DONE

	DP$NOH==000002		;FOR DPY$ - DON'T HOME UP WHEN DONE

	AD$NOM==400000		;FOR ADR$ - DON'T MOVE CURSER




;FUNCTIONS FOR SET$ LUUO:


	$SEACR==1		;DO AUTOMATIC CRLFS AT END OF LINE
	$SEDCW==2		;DON'T CLEAR END OF WINDOWS
	$SEUDA==3		;KEEP DPY'S ACS WHEN GIVING CHARS TO USER
	$SECHR==4		;SET OUTPUT ROUTINE FOR GETTING CHARS
	$SEERR==5		;SET ERROR ROUTINE HANDLER
	$SEWND==6		;SET MULTIPLE WINDOWS
	$SEUOK==7		;UPDATING SAME LOCATION TWICE IS OK
	$SEEAT==10		;SET NUMBER OF LINES TO IGNORE



;FUNCTIONS FOR TTY$ LUUO:


	$TTHOM==0		;HOME TO TOP LEFT CORNER
	$TTCLR==1		;HOME UP AND CLEAR SCREEN

;OFFSETS IN DPYTAB TABLE:


	$DPLEN==0		;POINTER TO TERMINAL'S LENGTH
	$DPWID==1		;POINTER TO TERMINAL'S WIDTH
	$DPSIZ==2		;POINTER TO 4 WORDS GIVING CURRENT WINDOW
	$DPWCT==3		;POINTER TO CURRENT WINDOW COUNTER
	$DPDTL==4		;LENGTH OF RELOCATABLE DATA
	$DPADR==5		;POINTER TO ADDRESS OF RELOCATABLE DATA
	$DPSCR==6		;POINTER TO SCREEN STORAGE
	$DPERR==7		;HIGHEST ERROR,,ADDRESS OF ERROR TABLE
	$DPTTY==10		;ADDRESS OF TERMINAL TYPE TABLE
	$DPJFN==11		;POINTER TO JFN USED FOR TTY
	$DPEAT==12		;POINTER TO NUMBER OF LINES LEFT TO EAT
	$DPMAX==12		;HIGHEST LEGAL OFFSET


;ERROR CODES RETURNED FROM DPY:


	$ERUKE==0		;UNKNOWN ERROR
	$ERILR==1		;ILLEGAL LUUO RECEIVED
	$ERUSL==2		;UPDATED SAME LOCATION TWICE
	$ERIWS==3		;ILLEGAL WINDOW SIZE GIVEN
	$ERISF==4		;ILLEGAL SET FUNCTION GIVEN
	$ERITF==5		;ILLEGAL TTY FUNCTION GIVEN
	$ERCDS==6		;CANNOT OUTPUT DESIRED SEQUENCE
	$EROPF==7		;OUTPUT FAILURE OCCURRED
	$ERIPG==10		;ILLEGAL TERMINAL ADDRESS GIVEN
	$ERING==11		;INITIALIZE FUNCTION NOT GIVEN
	$ERIFF==12		;INITIALIZE FUNCTION FAILED

;MACRO TO GENERATE TAB STOPS.  MAKES 4 WORDS OF DATA, WHERE BIT N
;MEANS SET A TAB STOP AT COLUMN N.  ALL QUANTITIES ARE IN DECIMAL.





	DEFINE	$TABS(COLS),<

	$TAB$1==0		;;INITIALIZE ALL 4 WORDS
	$TAB$2==0
	$TAB$3==0
	$TAB$4==0

IRP	<COLS>,<		;;LOOP OVER ALL DESIRED COLUMNS

	$TAB$N==^D<COLS>/^D36	;;FIND WHICH WORD TO PUT BIT IN
	$TAB$B==1B0_<$TAB$N*^D36-^D<COLS>>	;;AND BIT VALUE

	IFE	<$TAB$N-0>,<$TAB$1==$TAB$1!$TAB$B>
	IFE	<$TAB$N-1>,<$TAB$2==$TAB$2!$TAB$B>
	IFE	<$TAB$N-2>,<$TAB$3==$TAB$3!$TAB$B>
	IFE	<$TAB$N-3>,<$TAB$4==$TAB$4!$TAB$B>
>

	EXP	$TAB$1		;;DUMP THE FOUR DATA WORDS NOW
	EXP	$TAB$2
	EXP	$TAB$3
	EXP	$TAB$4
>




	END