Message-Id: <m0yG152-000S2uC@inti.gov.ar>
Comments: Authenticated sender is <salvador AT natacha DOT inti DOT gov DOT ar>
From: "Salvador Eduardo Tropea (SET)" <salvador AT inti DOT gov DOT ar>
Organization: INTI
To: Victor Jetten <victor AT forest DOT demon DOT nl>, djgpp AT delorie DOT com
Date: Fri, 20 Mar 1998 09:41:55 +0000
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Subject: Re: allegro at > 60Hz?
In-reply-to: <3511AA12.EFA829C6@forest.demon.nl>
Precedence: bulk

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
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Salvador Eduardo Tropea (SET). (Electronics Engineer)
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