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Chapter 2: Running Setup
These options specify which bus the specified IRQ line is used on
and allow you to reserve IRQs for legacy ISA adapter cards. If more
IRQs must be removed from the pool, the end user can use these
options to reserve the IRQ by assigning an ISA/EISA setting to it.
Onboard I/O is configured by AMIBIOS. All IRQs used by onboard I/
O are configured as PCI/PnP.
IRQ14 and 15 will not be available if the onboard PCI IDE is en-
abled. If all IRQs are set to ISA/EISA and IRQ14 and 15 are allo-
cated to the onboard PCI IDE, IRQ 9 will still be available for PCI
and PnP devices. This is because at least one IRQ must be avail-
able for PCI and PnP devices.
The settings are ISA/EISA or PCI/PnP. The Optimal and Fail-Safe
default settings are PCI/PnP, except for IRQ 12.
Reserved Memory Size
This option specifies the size of the memory area reserved for
legacy ISA adapter cards. The settings are Disabled, 16K, 32K, or
64K. The Optimal and Fail-Safe default settings are Disabled.
Reserved Memory Address
This option specifies the beginning address (in hex) of the reserved
memory area. The specified ROM memory area is reserved for use
by legacy ISA adapter cards. The settings are C0000, C4000,
C8000, CC000, D0000, D4000, D8000, or DC000. The Optimal
and Fail-Safe default settings are C8000.
