Xref: news2.mv.net comp.os.msdos.djgpp:4032
From: Shawn Hargreaves <slh100 AT york DOT ac DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: graphics
Date: Sun, 19 May 1996 23:49:26 +0100
Organization: The University of York, UK
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On 19 May 1996, Watcom353 wrote:

> But I can't get a pixel on the screen.  I've tried
> unsigned char *scr=0xa000;
> with many different amounts of 0s after the a.  But I always get a GPF. 

You can't do that in protected mode: you have to use far pointers or the 
fat DS trick. Read the FAQ, or Brennan's VGA tutorial 
(http://www.rt66.com/~brennan/djgpp/how_to_access_vga.html).

> (Any suggestions for setting the mode without bios would also be 
> appreciated)

Why on earth would you want to do that? The BIOS is there to make life 
easier for you: it seems pretty silly not to use it :-)


/*
 *	Shawn Hargreaves.        Why is 'phonetic' spelt with a ph?
 *	Check out Allegro and FED on http://www.york.ac.uk/~slh100/
 */