Been poking at
a PPC based linux system lately. Now, if I've been correctly
informed (and my photagrafik memory isn't playing tricks on me) the Apple PP
C
platforms lacks an RTC compatible device.
Major stumbling block... how does one accomplish an high resolution timer in
this environment, any ideas?
What does a Mac use?
It's called the Time Base register. See the CPU frequency scaling
thread from last month's jackit-devel archives for a discussion.
unrelated, i believe. the RTC on intel machines is basically a crystal
with a configurable interrupt interval. AFAIK, the time base register
on PPC is equivalent to the TSC on x86, and if so, it cannot generate
interrupts.
--p