Interval timer

Matthew Chapman
2008-03-05T09:41:28Z

Is there any interval timer on HP zx1 platforms, other than the
CPU-based ITC/ITM?

All I need is some mechanism that can deliver an interrupt "after a
short time", where I don't care exactly how long that is, but preferably
of the order of several microseconds (pinging the chipset is a bit short
I think).

I used to use the PMU for this - the PMU is useful for an incredible
number of things - but this was causing a bug (because of the 'freeze'
behaviour on an interrupt, I miss important events in other counters).

Multiplexing ITC/ITM complicates my common path so I'm trying to avoid
doing that if I can find any other way...

Any ideas?

Matt