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Chapter 4
BIOS Configuration
Primary/Secondary IDE INT#
Each PCI peripheral connection is capable of activating up to four interrupts:
INT# A, INT# B, INT# C and INT# D. By default, a PCI connection is assigned
INT# A. Assigning INT# B has no meaning unless the peripheral device
requires two interrupt services rather than just one. Because the PCI IDE
interface in the chipset has two channels, it requires two interrupt services.
The primary and secondary IDE INT# fields default to values appropriate for
two PCI IDE channels, with the primary PCI IDE channel having a lower
interrupt than the secondary.
Used Mem base addr
Select a base address for the memory area used by any peripheral that requires
high memory.
Used Mem Length
Select a length for the memory area specified in the previous field. This field
does not appear if no base address is specified.
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