AR-B1641 User’s Guide
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IRQ3/4/5/7/9/10/11/14/15:
These items specify the bus where the specified IRQ line is used. The settings determine if
AMIBIOS should remove an IRQ from the pool of available IRQs passed to devices that are configurable by the system
BIOS. The available IRQ pool is determined by reading the ESCD NVRAM. If more IRQs must be removed from the IRQ
pool, the end user can use these settings to reserve the IRQ by assigning an ISA/EISA setting to it. Onboard I/O is
configures by AMIBIOS. All IRQs used by onboard I/O are configured as PCI/PnP. If all IRQs are set to ISA/EISA, and
IRQ14/15 are allocated to the onboard PCI IDE, IRQ9 will still be available for PCI and PnP devices. Settings: ISA/EISA
and PCI/PnP.
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, D4000, D8000, or DC000. The Optimal and Fail-safe default settings are C0000.
