User's Manual

Chapter 7: BIOS
7-11
Select UDMA4 to allow the BIOS to use Ultra DMA mode 4 . It has a data
transfer rate of 100 MBs.
The options are Auto, SWDMAn, MWDMAn, and UDMAn.
S.M.A.R.T. For Hard disk drives
Self-Monitoring Analysis and Reporting Technology (SMART) can help predict
impending drive failures. Select Auto to allow the AMI BIOS to automatically de-
tect hard disk drive support. Select Disabled to prevent the AMI BIOS from using
the S.M.A.R.T. Select Enabled to allow the AMI BIOS to use the S.M.A.R.T. to
support hard drive disk. The options are Disabled, Enabled, and Auto.
32-Bit Data Transfer
Select Enable to enable the function of 32-bit IDE data transfer. The options are
Enabled and Disabled.
XPCI/PnP Confi guration
This feature allows the user to set the PCI/PnP confi gurations for the following
items:
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.
ROM Scan Ordering
This item determines what kind of option ROM activates over another. The options
are Onboard First and Add-on First.