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From:	Andrew Cottrell <andspamtrap DOT aty DOT exemail DOT doty DOT com DOT dot DOT yau AT unknown DOT addr>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: BIOS video fails under XP?
Date:	Sat, 28 Aug 2004 07:59:51 +1000
Organization:	HOME
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>I have written a small, simple hex editor.  It works properly
>in a DOS box under Win98, compiled either with DJGPP or with
>Turbo C 2.01.  
What is the text library used? If you are not using a text library
then have a quick look at TVision and see  how it goes. It may be of
some help in seeing how it works.
> In WinXP, the 16-bit Turbo C version works,
>but the DJGPP version displays a screenful of garbage.  I
>suspect the problem is in the BIOS video interrupt interface.
>Is this a known problem?  
No
>Does the latest DJGPP work properly with the Int 10h functions?

I have recompiled a few versions fo the Rhide 1.5/CVS about 1-2 years
ago while working on the fixes required to get the LIBC updated to
support XP with other people and did not have any problems with the
resulting app with regards to garbage being displayed.

Please check that you are using the latest DJGPP packages as old ones
are not XP compatible. You could try the 2.04 beta release.

On 2K and XP MS broke a number of low level int calls which caused a
number of issues with the LIBC. In the code you are wrote/using there
may be an API call that MS broke that is being used one way with TC
and another way with DJGPP.

Let us know how you get on.

Andrew

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