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From: Ralf.Brown@B.GP.CS.CMU.EDU
Newsgroups: comp.sys.ibm.pc
Subject: Re: detection of 43/50/... line modes
Message-ID: <2610c536@ralf>
Date: 28 Mar 90 13:07:50 GMT
Sender: ralf@b.gp.cs.cmu.edu
Organization: Carnegie Mellon University School of Computer Science
Lines: 16
In-Reply-To: <58consult@physc1.byu.edu>

In article <58consult@physc1.byu.edu>, consult@physc1.byu.edu wrote:
}    Is there a standard way to detect the number of lines an EGA or VGA display
}adapter is currently using?  It seems to me that there should be an address in
}the ROM data area that contains this info... Anybody know where?  What about

If an EGA or higher is present (check with INT 10h/AH=12h/BL=10h), then the
byte at 0040h:0084h contains the number of the last row on the screen (total
lines less one).

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    The negation of the proposition is unimaginable or meaningless.  Popular
    for proofs of the existence of God.