From:	erfarmer201 AT comcast DOT net (Eric Farmer)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Not really a dual installation?
Date:	22 Nov 2002 05:33:47 -0800
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

Hello all,

I have read the FAQ regarding dual DOS/Windows installations, and I
still have a couple of questions.  Here is my situation: I am running
Windows XP, and would like to build _and_ run _most_ of my DJGPP
applications in XP.  However, I also want to build (in XP, if
possible, for convenience) a "production" application that will run in
pure MS-DOS (probably via a boot disk).  (I need DOS for easy access
to hardware interrupts, and for more precise timing that multi-tasking
Windows can't provide.)

Having read the FAQ, I am not sure I "need" long filename support, if
that simplifies things.  At any rate, my questions are these:

1. When I build a DJGPP application, will it run, as is, in either XP
or MS-DOS?  I ask because the zip picker gives a different set of
files to install for the two environments (namely, long filename
support or DPMI server).  For example, does unpacking csdpmi5b.zip
result in executables being built which will _not_ run in XP?

2. To get to a pure MS-DOS environment, I plan to use the boot disk
created by Windows Explorer in XP.  Have others had success with this,
or should I look elsewhere (bootdisk.com, etc.)?

I am still trying to get smart on the differences between Windows and
DOS, so any comments are appreciated.

Thanks,
Eric Farmer

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