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Important: The information in this document is obsolete and should not be used for new development.

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Inside Macintosh: Devices /
Chapter 6 - Power Manager / Power Manager Reference
Power Manager Dispatch Routines / Controlling the Processor

MaximumProcessorSpeed

You can use the MaximumProcessorSpeed function to find out the maximum speed of the computer's microprocessor. 

short MaximumProcessorSpeed();
DESCRIPTION
The MaximumProcessorSpeed function returns the maximum clock speed of the computer's microprocessor, in MHz.

ASSEMBLY-LANGUAGE INFORMATION
The trap is _PowerMgrDispatch ($A09E). The selector value for MaximumProcessorSpeed is 16 ($10) in the low word of register D0. The processor speed value is returned in the low word of register D0.

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© Apple Computer, Inc.
3 JUL 1996