Inside Macintosh: Devices /

Chapter 6 - Power Manager / Power Manager Reference

Power Manager Dispatch Routines / Controlling the Processor

IsProcessorCyclingEnabled

You can use the IsProcessorCyclingEnabled function to find out whether processor cycling is enabled.

Boolean IsProcessorCyclingEnabled();

DESCRIPTION

The IsProcessorCyclingEnabled function returns a Boolean value of true if processor cycling is currently enabled, or false if it is disabled.

ASSEMBLY-LANGUAGE INFORMATION

The trap is _PowerMgrDispatch ($A09E). The selector value for IsProcessorCyclingEnabled is 24 ($18) in the low word of register D0. The Boolean result is returned in register D0.