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Interrupt Handling

Interrupt handling is very different with the NewWorld approach. The interrupt code has been rewritten to allow for dynamic creation of the interrupt layout. In addition, interrupt latency has been reduced to such an extent as to make it negligible. The description of the interrupt layout is now part of an Open Firmware interrupt tree that is interlaced within the Open Firmware device tree. The Trampoline code uses this interrupt tree to build the Mac OS native interrupt tree.

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