MSI 865PE User Guide - Page 61

PNP/PCI Configurations, The ESCD Extended System Configuration Data NVRAM Non-volatile

Page 61 highlights

MS-6728 ATX Mainboard PNP/PCI Configurations 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 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 are: 32, 64, 96, 128, 160, 192, 224, 248. 3-18

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3-18
MS-6728 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
are:
32, 64, 96, 128, 160, 192, 224, 248
.