User`s manual

Chapter 7: BIOS
7-15
32Bit Data Transfer
Select Enable to enable 32-bit IDE data transferring support. The options are
Enabled and Disabled.
XPCI/PnP Confi guration
Clear NVRAM
This feature clears the NVRAM during system boot. The options are No and Yes.
Plug & Play OS
Selecting Yes allows the OS to confi gure Plug & Play devices. (This is not required
for system boot if your system has an OS that supports Plug & Play.) Select No to
allow the AMI BIOS to confi gure all devices in the system.
PCI Latency Timer
This feature sets the latency Timer of each PCI device installed on a PCI bus. Select
64 to set the PCI latency to 64 PCI clock cycles. The options are 32, 64, 96, 128,
160, 192, 224 and 248.
PCI IDE Bus Master
When enabled, the BIOS uses PCI bus mastering for reading/writing to IDE drives.
The options are Disabled and Enabled.
PCIe I/O Performance
Some add-on cards perform faster with the coalesce feature, which limits the pay-
load size to 128B; while others, with a payload size of 256B by disabling coalesce
support. Please refer to your add-on card user guide for the desired setting. The
options are 256B and 128B.
ROM Scan Ordering
This item determines what kind of option ROM activates over another. The options
are Onboard First and Add-on First.
PCI-E Slot 1 x4 (in x16 slot), PCI-E Slot 2 x4 (in x16 slot), PCI Slot 3
33MHz, PCI-E Slot 4 x16, PCI Slot 5 33MHz, PCI-E Slot 6 x16, PCI-E Slot 6
x16, PCI-E Slot 8 x16, PCI-E Slot 10 x16, PCI-E Slot 11 x4 (in x8 Slot)
Use this setting to disable any of the PCI slots. The options are Disabled and
Enabled.
Onboard LAN Option ROM Select
The item selects the type of onboard option ROM to load. The options are PXE
and iSCSI.