From: michael young <mhyoung@valdosta.edu>
Cc: linux-assembly@vger.kernel.org
Subject: Re: DOS assembly questions?
Date: Thu, 23 Oct 2003 13:00:32 -0400 [thread overview]
Message-ID: <3F980930.6080207@valdosta.edu> (raw)
In-Reply-To: <3F961EB4.BE9DB472@yahoo.co.uk>
Hi willy,
thank you for your response.
a question below.
willy meier wrote:
>michael young wrote:
>
>apparently, a common 'problem':
>if ah:=9 and int 21 is supposed to send text,
>the binary counter data can't appear visibly.
>
>
> [...]
>
>
>>START:
>>
>>
> mov cx, 10 => mov cx,"9"
>
>
>> call myloop
>>
>>myloop:
>> mov dx, cx
>> mov ah, 9
>> int 21H
>> dec cx
>>
>>
> cmp cx,"0"
> jnz myloop => jc myloop
>
Here, wouldn't the 'dec' instruction set the 'ZF' if cx hit 0?
where am I going wrong on this?
>
>
>> mov dx, donemsg
>>
>>
> [...]
>
>best,
> hp
>
>
michael
next prev parent reply other threads:[~2003-10-23 17:00 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-20 23:46 DOS assembly questions? michael young
2003-10-21 6:05 ` Fekete Gabor
2003-10-21 18:05 ` michael young
2003-10-22 6:07 ` willy meier
2003-10-23 17:00 ` michael young [this message]
2003-10-24 17:12 ` willy meier
2003-10-28 22:19 ` michael young
2003-10-24 5:22 ` FernanBolando
2003-10-28 22:11 ` michael young
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