3-20
MS-7207 M-ATX Mainboard
PNP/PCI Configurations
This section describes configuring the PCI bus system and PnP (Plug & Play)
feature. PCI, or
P
eripheral
C
omponent
I
nterconnect, is a system which allows I/O
devices to operate at speeds nearing the speed the CPU itself uses when communi-
cating 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 ESCD (Extended System Configuration Data) NVRAM (Non-volatile Random Ac-
cess Memory) is where the BIOS stores resource information for both PNP and non-
PNP devices in a bit string format. W hen the item is set to [Yes], the system will reset
ESCD 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. W hen 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. Setting options: [32], [64], [96], [128], [160],
[192], [224], [248].
PCI Slot1/2 IRQ
These items specify the IRQ line for each PCI slot. Setting options: [4], [5], [7], [10],
[11], [Auto]. Selecting [Auto] allows BIOS to automatically determine the IRQ line for
each PCI slot.
