On Mon, 16 Apr 2007 16:31:50 -0400
"Timothy Normand Miller" <[EMAIL PROTECTED]> wrote:
> One example of a case where we want to do a one-shot vsync interrupt
> is when we want to update the color table. Depending on how the color
> table is implemented, writing to it during active video may glitch
> pixels, so we wait for blank and update then.
I'm not argueing against interrupts and interrupt disabling,
but such one shot things that have to be done during blank
time ask for a task queue that is to be executed during
blank time. Then it would be a queue and forget thing.
No need to implement a complex interrupt handler that might
be calleded a few ms later and thus after the card has left
the blank time already.
Of course the draw back is that the hardware becomes more
complex as some form of interpreter needs to be implement.
But we could merge this with the CPU which we are going
to implement anyways (please note that i have not read
the threads about the CPU yet).
Attila Kinali
--
Linux ist... wenn man einfache Dinge auch mit einer kryptischen
post-fix Sprache loesen kann
-- Daniel Hottinger
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