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From: bt@eng.auburn.edu (bt garner)
Newsgroups: comp.os.msdos.misc
Subject: Re: EGA and other text screens
Keywords: EGA,text screen height
Message-ID: <bt.910329100907@lab23.eng.auburn.edu>
Date: 29 Mar 91 16:09:07 GMT
References: <8196@dnlunx.pttrnl.nl>
Organization: Process Modeling Group
Lines: 20
Nntp-Posting-Host: lab23.eng.auburn.edu

In article <8196@dnlunx.pttrnl.nl> dondorp@dnlunx.pttrnl.nl (Dondorp E.) wrote:
>
>How can a program determine the width and height of the text screen.
>I found out there was a BIOS call that returned the number of
>character columns, but none returns the number of lines.
>I tried to figure out the height via the 'get screen mode' BIOS call
>only to find out that both 80x25 and 80x43 are screen mode nr 7.
>
>So the real question is: can I find out the screen height unambigously?
>	(and of course how?)
>

Screen width can be retrieved from memory location 0H:44AH 
Screen height can be retrieved from location 40H:84H 

these are both short int values.

bt garner (bt@eng.auburn.edu)
mutant systems programmer, process modeling group
chemical engineering department, auburn university