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echo: power_bas
to: ALL
from: WIEBE ZOON
date: 1998-05-21 17:30:00
subject: Re: SVGA AND HIGH RESOLUT

From: Wiebe Zoon 
Subject: Re: SVGA AND HIGH RESOLUTIONS ???
 
Jellyfish wrote:
> Does anyone know how to program svga and high resolutions ?
> For instant 800x600x256.
 
Yes, I do.
> In what memory addresses is this information stored and what is VESA >??
This information is not stored on a certain address.(My mind works
diffrently :)
 
VESA is a standard for using Video cards on higher resolutions. This
should mean that if your video card is VESA-compatible, you can use
interrupt 10 function &h4F00 through &h4F0A to customize the screen to
your needs.
 
To put pixels on the screen (Which is the actual goal, isn't it?) you
have to poke bytes is segment &hA000. Because &ha000 is not large enough
to contain all pixels, you have to flip your page once in a while.
 
for an example you can download my library at
http://members.xoom.com/waczoon/vesa.zip
 
good luck !
 
Wiebe
 
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