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System Software

The latest Power Macintosh G3 computer is different from previous Macintosh computers in that it has no single, large ROM that contains the many components of the Mac OS software, along with the 68K emulator, hardware initialization, and the nanokernel. Instead, a small ROM provides hardware initialization functions and provides a mechanism to load the Mac OS ROM image into RAM. The new software architecture that is centered around ROM-in-RAM and its ramifications has the code name NewWorld.

Boot ROM Contents

Mac OS ROM Image File Contents

NewWorld Boot Process

What Is Different