From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stas Sergeev <stssppnn@yahoo.com>
Subject: Re: how do you get a DOS returncode back into unix ?
Date: Sat, 24 Aug 2002 01:33:04 +0400
Sender: linux-msdos-owner@vger.kernel.org
Message-ID: <3D66AA10.9040604@yahoo.com>
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Return-path: <linux-msdos-owner@vger.kernel.org>
List-Id: <linux-msdos.vger.kernel.org>
Content-Type: text/plain; charset="us-ascii"; format="flowed"
To: linux-msdos@vger.kernel.org

Hello.

Per Jessen wrote:
>>No. What DOSEMU could do is to intercept int21,4d and "peek" the code
>>from DOS memory, at the SDA (obtained via int21/5d06), location 14h.
>>SDA=DOS Swappable Data Area, basically the current state of DOS,
>>combined with all its "static" variables and internal stacks.
>>The "Undocumented DOS" books attempt to do multitasking with DOS by
>>swapping the SDA. Of course multitasking with DOSEMU is trivial and 
>not
>>nearly as dangerous and full of potholes :)
>>The SDA is already used by the redirector code, so DOSEMU knows its
>>location.
> Thanks Bart - I'll have a think about it.
Just wondering: is it really worth doing it
that way? Can you just create a .bat file
that will execute your program and then exitemu
with an argument to depend on ERRORLEVEL?