VGA font programming

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#5195

From: Christopher M. Reid
Date: Thu, 14 Mar 1991 06:12

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I need help in using a standard VGA graphics adapter to redefine the
fonts that are used to display to the screen.  I want to define a
second character set and define some special characters.  I am
currently using BIOS calls (fn 10 hex) to load defined characters in
Borland C++.  The main problem is that the screen flashes on every
font load call, and I need to be able to define the new characters one
at a time.

Can this be done by direct memory manipuation?  If so, what addresses?
Or am I using incorrect BIOS routines?

Please HELP!

Thanks very much,
Chris Reid
reid@iris.ucdavis.edu

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Path: arc1-ca.pugleaf.net!utzoo!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!decwrl!csus.edu!ucdavis!iris!reid
From: reid@iris.ucdavis.edu (Christopher M. Reid)
Newsgroups: comp.os.msdos.programmer
Subject: VGA font programming
Message-ID: <8568@ucdavis.ucdavis.edu>
Date: 14 Mar 91 06:12:46 GMT
Sender: usenet@ucdavis.ucdavis.edu
Reply-To: reid@iris.ucdavis.edu (Christopher M. Reid)
Organization: U.C. Davis - Department of Electrical Engineering and Computer Science
Lines: 16