Date: Tue, 22 Jul 1997 08:00:15 -0700 (PDT)
Message-Id: <199707221500.IAA26318@adit.ap.net>
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To: jgfw AT usa DOT net
From: Nate Eldredge <eldredge AT ap DOT net>
Subject: Re: Vesa 2.0 is slower than 1.2 on my video card !!!!!
Cc: djgpp AT delorie DOT com
Precedence: bulk

I think the most likely reason Vesa 2.0 would be slower is that your
hardware doesn't actually support it. Your `Display Doctor' software has to
emulate the Vesa 2.0 interface and translate to Vesa 1.2. This, of course,
means that each action will take longer and slow things down.
You wrote:
>My video card's (Cirrus Logic Cl-54M30) bios doesn't support vesa 2.0 
>but vesa 1.2. I install the Display Doctor 5.3a into my computer so that 
>my video card can support vesa 2.0. 
>
>Then I ran the Allegro's Demo.exe. I choose vesa 2.0 linear frame 
>buffer and 640x480 mode with double buffer. When the game starts, it 
>reported the frame rate to be 16 fps. This is even slower than the vesa 1.2 
>(which is about 24 fps with univbe and 22 without univbe). Can someone tell 
>me why vesa 2.0 is slower in my video card when it suppose to be faster 
>??? anyone ??
>

Nate Eldredge
eldredge AT ap DOT net