From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: ScreenUpdate function..
Date: Mon, 18 Jan 1999 17:07:57 +0200
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On Sun, 17 Jan 1999, Alvin Lau wrote:

> Does any one know how to write a buffer for "ScreenUpdate" or
> "ScreenUpdateLine" function to update the text screen ??

The buffer should include 2 bytes for every displayed character: the 
character itself and its text attribute byte (foreground and background 
colors encoded in one byte).  This is how the displayed characters are 
layed out in the video memory.