> Ryan, the dos app was designed for running on a MS-DOS machine that has no 
> Windows on it.  Since it is not meant for Linux, the vendor is not willing 
> to support me in any way...

Maybe you should make some noise to his competitors...

> I also tried to attach dosdebug to dosemu before I start the Dos App.  I 
> was told that dosdebug will give a lot more information on the problem this 
> way. However, dosdebug did not give me any extra info when the Dosemu hang.
> 
> Thank you for helping me.  What else can I try?

Well, the first thing I'm wondering is what int you are inside of in
that trace.  Eventually it does iret, but there was never an int that I
can see.  Was part of the trace omitted?

The other thing is that you can try patching the conditional jump
immediately after that comparison that never succeeds:
c316:9036 F64408FF         test    [si+0x8],0xff
c316:903a 7408             je      9044

The op code for jmp 9044 is EB08.  This will at least get you past this
while (foo != -1) situation, but it might just loop again or crash
afterwards.  You could also try printing the value at the memory
location si+0x8 when you arrive at that instruction to see if it ever
changes.

-- 
Ryan Underwood, <[EMAIL PROTECTED]>
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