On Thu, 4 Oct 2001, Egbert Eich wrote:
> Alan Hourihane writes:
> > >
> > Egbert - I hope we really don't have to kludge around like this, but if we
> > do, you can check the current video output mode in the BlockHandler and
>
> I just did. Had a brown paper bag ready - just in case.
>
> > use a callback to update values.
> >
>
> I did some code which does it every 100 frames. This seems to be very
> reasonable. But I'll play around a little bit more. BlockHandler is
> a nice idea, too.
>
The BlockHandler will get called once per frame. Reading a
register every frame is not a big deal. The overhead of that
is small compared to copying all that data across the bus. Alot
of drivers have to read every frame. MGA and ATI both do.
Mark.
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