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From: "Charles Sandmann" <cwsdpmi AT earthlink DOT net>
Newsgroups: comp.os.msdos.djgpp
References: <39cdc18e-eccb-4213-b896-db3be020702e AT w9g2000prg DOT googlegroups DOT com>
Subject: Re: csdpmi7 not working on virtualbox, how use dosmemget with seg ofs from int21h?
Date: Fri, 4 Mar 2011 18:41:18 -0600
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

"Jim Michaels" <jmichae3 AT yahoo DOT com> wrote in message 
news:39cdc18e-eccb-4213-b896-db3be020702e AT w9g2000prg DOT googlegroups DOT com...
> also, just like it says in http://www.delorie.com/djgpp/v2faq/faq6_2.html
> I am getting the "No DPMI" message.  the way I dealt with that was to
> gcc whatever -o a.exe something.cpp
> exe2coff a.exe
> copy /b cwsdstub.exe+a something.exe
> del a
> del a.exe

Before trying the cwsdstub, does the following work in virtualbox?

cwsdpmi.exe  (this should load cwsdpmi)
cwsdpmi -u  (this should unload cwsdpmi)

> this kind of executable does not work on virtualbox.  I followed the
> csdpmi7b documentation explicitly.
> I get "No DPMI" when I run it under FreeDOS 1.0 under virtualbox.  Do
> you know why this might be?

I would not expect to get the "No DPMI" message with cwsdstub attached.