From: Jason Hood <jadoxa AT yahoo DOT com DOT au>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: AT&T inline asm in DJGPP...
Date: Mon, 02 Dec 2002 12:13:52 +1000
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lewi9908 wrote:
> 
>  and byte [edx], 0x0                   ;Check for Null char
>  jz short PrintDone
>  mov byte al, [edx]

I think you want something like:

mov byte al, [edx]
test al,al
jz short PrintDone

here. "and byte [edx], 0x0" is always going to set [edx] to zero.

Jason.