Slightly OT: DOS programs in Win XP

From: Dan Williams <>
Date: Tue Jan 4 08:05:19 2005

On Mon, 3 Jan 2005 20:58:35 -0800 (PST), Computer Collector Newsletter
<> wrote:
> A while ago I asked if anyone on the list could help me get AutoCAD 12 for DOS.
> Several people came through and I now have a copy. Thanks, everyone!
> As expected though, it doesn't work and play nicely with Windows XP. I was
> hoping that just running it through a command prompt window and giving that
> giving the Win 95 compatibility attribute to the acad.exe file would make it
> work. It didn't and I got a strange error message:
> "Phar Lap err 74: Can't use -REALBREAK under this version of DPMI"
> So I Google that and found a few threads like this one:
> Apparently it's just not possible to run Acad 12 in 'real' DOS in XP. I
> already knew XP's prompt is nothing close to real DOS, but I was hoping to find
> a way to trick the program, or a way to emulate DOS perhaps. Anyone have a
> clever solution to this? (I do have a suitable second PC to install real DOS
> on, but I'd rather not have to dedicate a whole system just to use one program.)
> =====
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If you don't need to have windows running at the same time, get a copy
of freedos. Make a bootable cd with autocad on it.

Received on Tue Jan 04 2005 - 08:05:19 GMT

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