Video help request

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Article #41697

#41697

From: Christopher Schanck
Date: Tue, 06 Feb 1990 00:42

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Ladies and Gentlemen,

This is a problem which has been bugging me for quite a while.  I need
some correct information on how to recognize text video modes.  Primarily,
I need to be able to recognize the base segment address of the video
memory page 0, the number of columns, and the number of rows.  I have
a hand-coded library which works lickety split fast given this info,
but I have had little luck tracking down this info down.

Ideally, I would like a function which would handle this similar to
the method Telix uses.  You can specify three possibilties:
	1) current setup (means recognizing the current setup)
	2) 80x43 (EGA & VGA)
	3) 80x50 (Mostly VGA)
	4) 132 versions of 2&3

So if anyone can provide the info, or point to a text with the
appropriate info, I would really appreciate it.

Chris




-=-
"Ixnay on the Ottenray!"
                           --- Igor, "Young Frankenstein"
Christopher Schanck (schanck@cis.ohio-state.edu)

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!harmonica.cis.ohio-state.edu!schanck
From: schanck@harmonica.cis.ohio-state.edu (Christopher Schanck)
Newsgroups: comp.sys.ibm.pc
Subject: Video help request
Message-ID: <76694@tut.cis.ohio-state.edu>
Date: 6 Feb 90 00:42:56 GMT
Sender: news@tut.cis.ohio-state.edu
Reply-To: <schanck@cis.ohio-state.edu>
Organization: Ohio State University Computer and Information Science
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