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About This Document

The purpose of this document is to provide fundamental high-level information about the Mac OS X core operating-system architecture. It also provides background for system programmers and developers of device drivers, file systems, and network extensions. In addition, it goes into detail about topics of interest to kernel programmers as a whole.

This is not a document on drivers. It covers device drivers at a high level only. It does, however, cover some areas of interest to driver writers, such as crossing the user-kernel boundary. If you are writing device drivers, you should primarily read the document I/O Kit Fundamentals, but you may still find this document helpful as background reading.


Who Should Read This Document
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Other Apple Publications
Mach API Reference
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Last updated: 2006-11-07

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