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From:	Georg <dosusb AT googlemail DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: incompatible
Date:	Mon, 21 May 2012 14:46:55 -0700 (PDT)
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On May 21, 10:56 pm, RayeR <gl DOT  DOT  DOT  AT centrum DOT cz> wrote:
> Yes, RSX/NT but I never tried it. I also think that watcom can do it
> or is it my misremember?
> It seems to me impractical to use extra DLL and extender. Also it  is
> probably a hack to some older djgpp source. We would need something
> that could be easily patched to recent gcc, binutils, djdev... without
> much extra effort to allow update it again when newer versions will be
> released. But it may be hard due to DJGPP dependency on DPMI and DOS
> calls so in this case it may be better to make some NTVDM-like
> extension for win64 cmd (e.g. with using those mentionex VTX - I don't
> know details how it works and if it's helpfull for 16bit code). It
> would be much comfortable to run DJGPP programs directly via cmd
> instead of loading some VM with DOS inside separated from host
> filesystem and taking long time to load. I think if Japheth could
> write win32 support for DOS it shouldn't be harder to make DOS/DPMI
> support for win64 if VTX can help instead of missing V86...

I do not know much about RSX/NT but upgrading a part of it could be
less effort than writing a NTVDM.

The Win7 command window already features DPMI as standard, at least
the ones I tried.

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