From:	"John M. Aldrich" <fighteer AT NO DOT SPAM DOT cs DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: DJGPP OS Compatability WAS:detecting dpmi
Date:	Mon, 21 Apr 1997 07:57:08 +0000
Organization:	Two pounds of chaos and a pinch of salt
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Jason Barstow wrote:
> 
> I wondered if anyone out there had any personal experiences of difficulties
> running their app in any of these OSs.
> I'm currently working on a game (like many people I think). This does all the
> usual stuff - hooks keyboard interrupt; uses VESA1.2/2.0; does sound via
> Soundblaster; uses NEARPTRS (optional).
> 
> I think I can claim MS-DOS(obviously), Win3.1 and Win95 compatability, but
> given all the lowlevel stuff I'm not sure about OS/2Warp, WinNT or Linux.

You're right here.  Compatibility problems show up when running
low-level, hardware-oriented routines on these operating systems,
because they like to hide the real hardware behind shadow registers and
generally make things difficult for programmers.

The FAQ has a fair bit of information on NT programming; the only thing
you will really have problems with is SVGA graphics.  I have heard that
Linux is also somewhat wierd in this respect.  I don't know anything
about OS/2, one way or the other.

-- 
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| John M. Aldrich, aka Fighteer I |     mailto:fighteer AT cs DOT com      |
| Proud owner of what might one   |   http://www.cs.com/fighteer    |
| day be a spectacular MUD...     | Plan: To make Bill Gates suffer |
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