From:	Victor Jetten <v DOT jetten AT frw DOT ruu DOT nl>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: allegro at > 60Hz?
Date:	Fri, 20 Mar 1998 15:09:40 +0100
Organization:	Academic Computer Centre Utrecht, (ACCU)
Lines:	32
Message-ID:	<351278A4.56FCA6D7@frw.ruu.nl>
References:	<m0yG152-000S2uC AT inti DOT gov DOT ar>
NNTP-Posting-Host:	ip65118.frw.ruu.nl
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

yep, your right, found a bios update and dos tsr to do this (matrox). Thanks!

Salvador Eduardo Tropea (SET) wrote:

> Victor Jetten <victor AT forest DOT demon DOT nl> wrote:
>
> > Normally my monitor runs at a refresh rate of >75Hz, but whenever I run
> > an Allegro application (under a dos box in win95) it switches to 60Hz,
> > which makes the image a bit jittery, especially at a rsolution of
> > 1280x1024. Can I adjust the frequency with Allegro?
>
> That's a problem of your VESA BIOS/drivers. Some boards have a program to
> configure it. For example: Trident boards have a program called smonitor,
> running it you can specify the frequencies supported by your monitor and then
> the BIOS will use these frequencies. By default the BIOS doesn't do it because
> it doesn't  work in a lot of monitors. W95 knows the model of your monitor and
> hence the W95 driver can choose 75Hz (the driver knows that it will work).
>
> SET
> ------------------------------------ 0 --------------------------------
> Visit my home page: http://set-soft.home.ml.org/
> or
> http://www.geocities.com/SiliconValley/Vista/6552/
> Salvador Eduardo Tropea (SET). (Electronics Engineer)
> Alternative e-mail: set-soft AT usa DOT net set AT computer DOT org
> CQ: 2951574
> Address: Curapaligue 2124, Caseros, 3 de Febrero
> Buenos Aires, (1678), ARGENTINA
> TE: +(541) 759 0013

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