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)
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References: <m0yG152-000S2uC AT inti DOT gov DOT ar>
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To: djgpp AT delorie DOT com
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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
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> Salvador Eduardo Tropea (SET). (Electronics Engineer)
> Alternative e-mail: set-soft AT usa DOT net set AT computer DOT org
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