by Niall Douglas. Last updated . This page has been accessed 37,712 times since the 15th May 2006.
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is a kernel driver for Apple MacOS X which throttles the CPU clock and
voltage for generic Intel and AMD processors. It works by querying ACPI for
possible clock configurations so if your BIOS doesn't think your system
should be throttled, the driver will fail to load. It should work on the
vast majority of standard PC laptops, including Apple's own machines.
It is licensed under the FreeBSD licence and so can be used for any purpose. It also serves as an excellent example of how to query ACPI in MacOS X (which is virtually undocumented) and how to parse through kernel structures. It may also prove useful for the "Apple Whine" problem for normal Apple hardware.
If you want more background about the development of this driver, please consult this forum thread on osx86project.org.
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