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INT 21h, function 4Fh produces Segmentation fault

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First post, by trepan

Posted on 
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I made a program in NASM.
It crashes.
Code :

BITS 16
ORG 0x100
SECTION .text
	; Lets do DTA
	mov	ah,0x1a
	mov	dx,buf
	int	0x21
	; Find a COM file
	mov	ah,0x4f
	xor	cx,cx
	mov	dx,fname
	int	0x21 ** we crash here
	; Did we find it ...
	cmp	ax,0x0
	je	end
fname	db	'c:\*.com',0
buf	db	'                                                    '

DosBOX 0.63 [Core:simple and full] Running FreeBSD/4.10 XFree 4.x ; Sound disabled; RAM : 256MB [system] 4;8;16;32 [Dosbox]

Reply 1 of 2, by Qbix

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yes
you must use 4e first to initilase the dta. (and get the first result)

while this crash has actually been fixed in the cvs. you will not find a file.
if you only use 4f

Water flows down the stream
How to ask questions the smart way!

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