Newsgroups: comp.os.msdos.djgpp
From: manni AT hotbot DOT com (Manni Heumann)
Subject: ALLEGRO: Vesa and Refresh rate
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Date: Fri, 13 Nov 1998 09:18:56 GMT
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

To the ALLEGRO-Pros:

I often use Vesa 1 graphics mode 640x480. I need to influence the refresh 
rate, not because I want flicker free displays, but because I need to time the 
display very accurately.
So using vsync() and a ms-timer (millisecond not that other bad word), I 
measured the time between refreshes, and on the average I always get some 13.6 
ms.
It doesn't matter, whether I use SciTech's utitlities that claim to influence 
refresh rate or use the Dos-Drivers of my VGA card.

Question: Am I on my own using vesa-modes with ALLEGRO, or can I get some 
utility to help me out?