MSI manual PNP/PCI Resource Management, 3-16, Clear NVRAM, PCI Latency Timer, MS-7255 Mainboard

MS-7255 Mainboard

PNP/PCI Resource Management

This section describes configuring the PCI bus system and PnP (Plug & Play) feature. PCI, or Peripheral Component Interconnect, is a system which allows I/O devices to operate at speeds nearing the speed the CPU itself uses when communicating with its special components. This section covers some very technical items and it is strongly recommended that only experienced users should make any changes to the default settings.

Clear NVRAM

The NVRAM (Non-volatile Random Access Memory) is where the BIOS stores re- source information for both PNP and non-PNP devices in a bit string format. When the item is set to [Yes], the system will reset NVRAM right after the system is booted up and then set the setting of the item back to [No] automatically.

PCI Latency Timer

This item controls how long each PCI device can hold the bus before another takes over. When set to higher values, every PCI device can conduct transactions for a longer time and thus improve the effective PCI bandwidth. For better PCI performance, you should set the item to higher values.

PCI Slot1~2 IRQ Preference

These items specify the IRQ line for each PCI slot.

3-16