3-20
MS-6742 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 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 ESCD (Extended System Configuration Data) NVRAM (Non-volatile
Random Access Memory) is where the BIOS stores resource information for
both PNP and non-PNP devices in a bit string format. When 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 (PCI Clocks)
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. Settings
range from
32
to
248
at a 32 increment.