From mboxrd@z Thu Jan  1 00:00:00 1970
From: Reinhard Karcher <reinhard.karcher@gmx.net>
Subject: Re: Invalid Opcode with BBE Lite on AMD64 (Ubuntu 10.10)
Date: Tue, 06 Jul 2010 17:05:22 +0200
Message-ID: <4C334632.9050806@gmx.net>
References: <878fc64695e8c08a552cbe4fa4dae486@127.0.0.1> <4C33331B.2010105@gmx.net> <4C3341D8.2070604@inferential.com>
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Am 06.07.2010 16:46, schrieb Frederic Herman:
> I have not been able to use dosemu for a long time, through a couple of
> versions of Fedora: FC11 and now FC12 with my x64_64 system. I have had
> to run my legacy BPI accounting package on a i386 system remotely
> through a ssh session to use it.
>
> I also tried building DosEmu from source, but I had the same op code
> problem.
>
> I also get op code errors, although different ones with the x86_64
> system. In my case, the problem may be due to my x86_64 system being an
> AMD processor. I don't have an Intel x86_64 system to try to see if it's
> the AMD or just an x86_64 memory emulation issue. Is yours an AMD or an
> Intel?
>

There were some errors in the emulation code, even in the latest revsion 
of dosemu. All I know of (except 1, for which an patch exits on sf.net) 
are corrected in the latest svn.
I can run my 32-bit dpmi program and my 16-bit dpmi programs without
op code errors, both in full simulation and in jit mode.
My computer has an Intel processesor, but the bugs were on both 
architectures.

Reinhard