Re: Q: vertical retrace interrupt?

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From: Matan Ziv-Av (matan@svgalib.org)
Date: Wed 02 Jan 2002 - 17:15:32 IST


On Wed, 2 Jan 2002, Ph. Marek wrote:

> I have the problem that I have some computing-intensive application which
> would run in parallel in realtime on a celeron 300.
> But now I'd need some function that allows me to pause the svgalib program
> and reactivate it on a vertical retrace interrupt to switch the visible
> portion and paint another.
> I can't do that busy-waiting.
> 
> Does a development version of svgalib has such a feature, or does someone
> know of any solution under linux?

I though about this, but the problem with this is that this requires a
part of the driver for each chipset to be in the kernel, since the
interrupt handler needs to be able to acknowledge the interrupt, which
is specific to every chipset. 

-- 
Matan Ziv-Av.                         matan@svgalib.org



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