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What Is Different

Even though ROM-in-RAM involves a fundamental change to the construction of the product-specific part of the Mac OS, the changes in the code and its execution are not that large. Many components are in changed locations, but their functions with respect to boot time and run time have not greatly changed. Many Mac OS components remain untouched.

Interrupt Handling

RAM Footprint

Run-Time Abstraction Services (RTAS)

NVRAM

Startup Disk Control Panel


© 1999 Apple Computer, Inc. – (Last Updated 26 March 99)