MSI G31M Series User Manual

3-19
BIOS Setup
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 AMIBIOS should remove an IRQ from the pool of avail-
able 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
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.
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 sig-
nals 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 required by the I/O device.

MSI G31M Series Specifications

General

Form Factor	Micro ATX
Socket	LGA 775
Front Side Bus	1333/1066/800 MHz
Maximum Memory	4 GB
Storage	4 x SATA 3Gb/s
IDE	1 x ATA100
Onboard Video	Intel GMA 3100
Chipset	Intel G31 / ICH7
Supported CPUs	Intel Core 2 Quad, Core 2 Duo, Pentium, Celeron
Memory Slots	2 x DDR2
Memory Standard	DDR2 800/667 MHz
Expansion Slots	1 x PCIe x16, 2 x PCI
USB Ports	8 x USB 2.0
Audio	Realtek ALC888 8-Channel HD Audio Codec
LAN	Realtek 8111B, 10/100/1000 Mbps