Subject: Re: [linux-audio-dev] PPC Linux, precision timing problem
From: Paul Davis (paul_AT_linuxaudiosystems.com)
Date: Mon Nov 22 2004 - 03:03:42 EET
>> 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
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