Re: Dos App hangs with DPMI / PIC problem

anon permutation
2004-09-17T04:18:34Z

Hello,

1. Tried
>e c316:903a EB
>e c316:903b 08

the trace becomes different, but the app still hangs...

2. Also tried using freedos instead of msdos. Same thing...

BTW, the app is actually a client - server app running on netx. Not sure if
this is relevant...

Thank you, everyone, for helping out!

>From: Ryan Underwood <nemesis-lists@icequake.net>
>To: anon permutation <anonpermutation@hotmail.com>
>CC: bartoldeman@users.sourceforge.net,
>nemesis-lists@icequake.net,linux-msdos@vger.kernel.org
>Subject: Re: Dos App hangs with DPMI / PIC problem
>Date: Thu, 16 Sep 2004 15:01:50 -0500
>
>
>On Thu, Sep 16, 2004 at 03:33:03AM +0000, anon permutation wrote:
> >
> > Hi,
> >
> > Thank you for helping. Okay:
> >
> > 1. I tried e c316:903a 75, and I see the je changed to jne. However,
>the
> > app continues to hang inside that loop...
>
>The flow of execution should be diverted either to or away from the jump
>target depending on the value of the zero flag. If nothing changes in
>the trace, then I guess you've done something wrong. Note that it is
>possible for the program to find another place to get stuck after that.
>
> > 2. I tried e c316:903a EB08, and I see the je changed to or [bi+si], cl
>.
> > The app continues to hang inside that loop. However, I think I am not
> > doing exactly what Ryan wanted me to do though...
>
>Um, something didn't work there. Try
>e c316:903a EB
>e c316:903b 08
>
>But inverting the conditional jump as bart suggested should have at
>least gotten you past that point.
>
> > What else can I try?
>
>Asking the vendor what the program is doing at that point so they can
>offer suggestions.
>
>--
>Ryan Underwood, <nemesis@icequake.net>
><< signature.asc >>

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