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From: Rugxulo <rugxulo AT gmail DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: DJGPP for Windows7
Date: Fri, 11 Dec 2009 09:44:00 -0800 (PST)
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Hi,

On Dec 11, 5:00=A0am, Gerrit van Niekerk <gerri DOT  DOT  DOT  AT gpvno DOT co DOT za> wrote:
> > On Fri, Dec 11, 2009 at 11:27 AM, Eli Zaretskii <e DOT  DOT  DOT  AT gnu DOT org> wrote:
>
> >> > From: "Alex" <ale DOT  DOT  DOT  AT users DOT sourceforge DOT net>
> >> > Date: Fri, 11 Dec 2009 10:50:11 +0200
> >> > Bytes: 1015
>
> >> > Is there DJGPP version for Windows7?
>
> >> DJGPP programs run on Windows, so it is unclear what exactly do you
> >> mean. =A0Please provide more details: what are you looking for, exactl=
y?
>
> Just tried compiling quite a big DJGPP project using the DJGPP port of
> GCC4.2.1 on Windows7 and it worked just fine. Unfortunately it is a
> graphics program and it can't run because the "16 bit MS-DOS
> Subsystem" "does not support fullscreen mode" :(
>
> For the same reason my favorite IDE for DJGPP (RHIDE) also does not
> work on Windows 7 and neither did under Windows Vista.

The DPMI limit was introduced originally in Win2003. It's only able to
be manually fixed in Vista SP1 or later. Vista also changed the driver
model, hence you'd have to risk using an old XP video driver which
would disable Aero. Much easier to just use DOSBox (slow but good) or
VirtualBox (fast but less good), IMHO. Also, they removed support
for .VxDs ("thunking"??), hence things like VDMsound don't work
anymore. And there is no NTVDM under x86-64 versions of Windows (which
is becoming more and more common). At least DOSEMU works fast and well
under x86-64 (e.g. Quake). For some reason, using PAE isn't popular
these days, even if Windows could support it with > 4 GB of RAM (but
they limit that due to "potential buggy drivers").

http://www.trnicely.net/misc/vista.html
http://www.geoffchappell.com/viewer.htm?doc=3Dnotes/windows/license/memory.=
htm