On Jun 18, 2007, at 4:31 PM, Thor Lancelot Simon wrote:

> Oh, I've been down this road (painfully) with other accellerators.   
> Unless
> you're going to run the system at very high HZ you can't really use a
> callout unless you want awful single-stream performance.

This particular part also has a cycle counter, right?

Sounds like a perfect candidate for Soft Timers!

http://www.cs.rice.edu/CS/Systems/Soft-timers/

-- thorpej