February 2003
Intermediate to advanced
592 pages
11h 47m
English
PC compatibility remains important in many operating environments and may include the use of several legacy buses. HT is intended to support connections to a variety of I/O buses, and the specification gives special attention to the PC legacy buses to ensure compatible support.
Several areas must be considered to ensure compatibility with I/O buses, including:
Protocol differences
Ordering requirements
Command translation
Address space and range differences
Potential deadlocks
The buses currently supported and discussed by the HT specification include PCI, PCI-X, AGP, and host processor buses, with special attention given to issues associated with PC legacy support via the ISA/LPC buses.
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