MSI P965 NEO-F - Motherboard - ATX User Manual page 55

PCI Slot1/2 IRQ
These items specify the IRQ line for each PCI slot.
IRQ Resources Setup
Press <Enter> to enter the submenu:
Important
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, when the operating
system is ready, the system will interrupt itself and perform the service re-
quired by the I/O device.
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 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 re-
moved 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 AMIBIOS. 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 IDE, IRQ 9 will still be
available for PCI and PnP devices.
DM A Resources Setup
Press <Enter> and you will enter the sub-menu of the items.DMA Resources 0/1/3/5/
6/7 for setting determine if BIOS should remove a DMA from the available DMAs
passed to devices that are configurable by the system BIOS. The available DMA pool
is determined by reading the NVRAM. If more DMAs must be removed from the pool,
the end user can reserve the DMA.
BIOS Setup
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