; VIEW OVERLAY (for VIEW43)
;	Assemble to a HEX file and overlay on VIEW43 with MLOAD

	true	equ	-1
	false	equ	0
	esc	equ	1bh
	cr	equ	0dh
	lf	equ	0ah

;
; CODE BEGINS
;
	org	103h

	db	'Z3ENV'		; Z-tool header
	db	3
z3eadr:
	dw	0fe00h		; Installed by Z3INS (or overlay)
	dw	100h
;----------------------------------------------------------------------------
; 
; PATCHABLE OPTIONS
;

; Printer initialization string sent by "I" command.
;   Begins with byte count, then the bytes.  Max char count is 16.

; Don't change this unless patching a version which was assembled differently
	lstok	equ	true	; Include listing options
	initsz	equ	16	; Max length of printer init string


	IF LSTOK
init$str:
	db	1		; Char count
	db	cr		; Chars

	ds	(initsz+1)-($-init$str)
	ENDIF


; If CRT supports insert line function, performance of VIEW is enhanced by
;  using it.  INSFLG tells VIEW whether or not user has installed code.

insflg:	db	true		; True = use insert line, false = work around

; This is the insert line code.  Default is used by Wyse, Televideo, et. al.
;   Must use 5 bytes with terminating 0's.

inscrt:
	db	esc,'E',0,0	; Insert line on CRT, up to 4 bytes.
	db	0



; Scan speed - speed of continuous scrolling
; Smaller number goes faster.  (May be changed from within program, also.)
; Must be a power of 2 i.e.  1,2,4,8...128
scanspd:
	db	32


	end