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• IRQ Resource Setup
Press <Enter> to enter the sub-menu and the following screen appears:
•
IRQ 3/ 4/ 5/ 7/ 9/ 10/ 11/ 14/ 15
These items specify the bus where the specified IRQ line is used.
The settings determine if AMI BIOS 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 [Reserved] setting to it. Onboard I/O is configured by AMI
BIOS. All IRQs used by onboard I/O are configured as [Available]. If all IRQs are set to [Reserved],
and IRQ 14/ 15 are allocated to the onboard PCI IDCE, IRQ 9 will be available for PCI and PnP
devices.
IRQ (Interrupt Request) lines are system resources allocated to I/O devices. When an
I/O device needs to gain attention of the operating system, it signals this by causing
an IRQ to occur. After receiving the signal, and when the operating system is ready,
the system will interrupt itself and perform the service required by the I/O device.
• DMA Resource Setup
Reserve the DMA resource.
