TYAN S1686D Manual page 56

PCI/PnP Setup,
Continued
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 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. IRQ12 only appears if the Mouse Support option in Advanced Setup is
set to Disabled. IRQ14 and 15 will not be available if the onboard PCI IDE is enabled.
If all IRQs are set to ISA/EISA and IRQ14 and 15 are allocated to the onboard PCI IDE,
IRQ9 will still be available for PCI and PnP devices, because at least one IRQ must be
available for PCI and PnP devices. The settings are ISA/EISA or PCI/PnP. The Optimal
and Fail-Safe default settings are 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.
This option does not appear if the Reserved Memory Size option is set to Disabled.
The settings are C0000, C4000, C8000, CC000, D0000, D4000, D8000, or DC000. The
Optimal default setting is Disabled and the Fail-Safe default setting is N/A.
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Pentium II Motherboards AMI BIOS Setup -Page
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