title	Module from library BASE_4 : SETOPN
	name	('SETOPN')
	maclib	baselib.lib

; Open an existing file definnig extent and current record

; Copyright (C)	Werner Cirsovius
;		Hohe Weide 44
;		D-20253 Hamburg
;		Tel.: +49-40-4223247

;		Version 1.0 September 1997

; ENTRY	Reg pair <DE> points to FCB
;	Reg L holds extent
;	Reg H holds current record

; EXIT	On normal return carry is reset
;	On error carry will be set or extended error
;	will be processed

	entry	setopn

	extrn	reopen

setopn:
	push	ix
	push	de
	pop	ix		; Copy FCB
	ld	(ix+_EX),l	; Set values
	ld	(ix+_CR),h
	call	reopen		; Open file
	pop	ix
	ret

	end