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From:	Georg <dosusb AT googlemail DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: incompatible
Date:	Mon, 21 May 2012 13:22:50 -0700 (PDT)
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On May 21, 1:22 pm, Georg <dos DOT  DOT  DOT  AT googlemail DOT com> wrote:
> On 21 Mai, 10:57, RayeR <gl DOT  DOT  DOT  AT centrum DOT cz> wrote:
>
>
>
> > Just a note, if you want to use >4GB RAM in windows the 64bits is not
> > only one possible way. I guess you heard about PAE. It's supported in
> > server editions of win2000 and win2003 and also vista and 7. Also it
> > works well in Linux (may require that you will recompile kernel with
> > enabled PAE feature). Your windows apps will not be able to use >4GB
> > at once but more runnings apps can utilize >4GB from system. If you
> > have 32bit version of Vista or 7 you can try this patchhttp://arstechnica.com/civis/viewtopic.php?f=15&t=49358
> > that will cure the windows kernel to not be limited by nonsense
> > restrictions. But you may expect that some driver will not be PAE
> > compatible and cause crash at boot and you will have to revert and
> > track the problem. But it's a way to go. My way is to stay on XP-SP3
> > until there will be drivers for new hardware. I know it will not last
> > forever. Then I probably switch fully to Linux with use of wine,
> > dosemu/dosbox, vmware etc.
>
> > About DOS 32bit bins support under Win64 - On bttr forum it was
> > noticed that openwatcom can do this. It can make standard win32 PE
> > console apps that are stubbed to run under DOS. So they runs under
> > Win64 too because stub is not executed instead PE is loaded. I think
> > this is possible way for DJGPP - it could exploit openwatcom's libc
> > and support of PE format, we already have HDPMI for running win32
> > PEs... But my knowledges don't go so deep here to write it all myself.
> > I rather wrote some thin layer and driver that let me use source
> > compatibility and compile separately under dos/linux/win32 (all gcc)
> > same source. But I have issue with Win64 driver signing (afaik there's
> > boot switch to disable the check but nobody would want mess up his
> > system).
>
> Did you mean this thread?:http://www.bttr-software.de/forum/forum_entry.php?id=10847
>
> Rugxulo wrote in this thread that he made a djgpp program that works
> both with DOS and Windows64 by using RSX/NT. Will this work with just
> about any djgpp program?
>
> Georg

I tried Rugxulo's program (7zdecRSX.exe) and yes, it works in DOS and
Win7-64bit equally well.

In the Windows command window you need the rsxnt.dll file to run and
in real mode DOS the rtx.exe file plus cwsdpmi loaded first.

I guess if Guenther could compile his program this way it would solve
his problem.

Georg

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