Q:
What are NewWorld and Open Firmware version 3, and are they related?
A:
NewWorld is a project to reduce the size of the 4MB Mac ROM by removing the Tool Box code contained in that ROM. For details see the iMac Developer Note.
Open Firmware version 3 is a part of that project. When the Tool Box was removed from the 4MB ROM, a portion of the booting logic was also removed. Open Firmware version 3 also provides for booting using FCode drivers. Version 3 first appeared on the iMac and is being used on all future platforms.
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