February 2003
Intermediate to advanced
592 pages
11h 47m
English
Content preview from HyperTransport™ System Architecture
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The Interrupt Message Address Range
The reserved address range used by the Interrupt Request and EOI messages is pictured in Figure 8-2 on page 202. This 3984MB address range is mapped from location FD_0000_0000h to FD_F8FF_FFFFh.
Figure 8-2. Interrupt Request and EOI Message Reserved Address Range
The specified range reserved for the interrupt request packets seems straight forward until one looks at the interrupt request packet definition (Figure 8-2 on page 202). Note that the address field (byte 7) defined by the specification includes only Addr[39:32]. These upper eight address bits identify a 4GB address range starting at FD_0000_0000h. When ...
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