American Megatrends Atlas III PCI User Manual page 61

PCI/PnP Setup,
Continued
IRQ3
IRQ4
IRQ5
IRQ7
IRQ9
IRQ10
IRQ11
IRQ12
IRQ14
IRQ15 These options specify the bus that the specified IRQ line is used on. These
options allow you to reserve IRQs for legacy ISA adapter cards. These options
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 setting to it. Onboard I/O is configured by AMIBIOS. All
IRQs used by onboard I/O are configured as PCI, PnP, or PCI/PnP. IRQ14 and
15 will not be available if the onboard Triton 2 PCI IDE is enabled. If all IRQs
are set to ISA 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, PnP, PCI/PnP, or PCI.
The Optimal and Fail-Safe default settings are:
Option
IRQ3
IRQ4
IRQ5
IRQ7
IRQ9
IRQ10
IRQ11
IRQ12
IRQ14
IRQ5
Chapter 2 WINBIOS Setup
Optimal Default Fail-Safe Default
PnP
PnP
PCI/PnP
PnP
PCI/PnP
PCI/PnP
PCI/PnP
PnP
PCI/PnP
PCI/PnP
55
PCI/PnP
PCI/PnP
PCI/PnP
PCI/PnP
PCI/PnP
PCI/PnP
PCI/PnP
PnP
PCI/PnP
PCI/PnP
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