User`s manual

Chapter 4: BIOS
4-9
Discrete MTRR Allocation
If enabled, MTRRs (-Memory Type Range Registers) are confi gured as distinct,
separate units and cannot be overlapped. If enabled, the user can achieve better
graphic effects when using a Linux graphic driver that requires the write-combining
confi guration with 4GB or more memory. The options are Enabled and Disabled.
PCI Confi guration
Access the submenu to make changes to the following settings for PCI devices.
Onboard GLAN1/Onboard GLAN2 (Gigabit- LAN) OPROM Confi gure
Enabling this option provides the capability to boot from GLAN. The options are
Disabled and Enabled.
Default Primary Video Adapter
This item allows the user to select the Primary Video Adapter between two adapters
instead of selecting among three or more adapters. The options are Other and
Onboard Video.
Onboard MASS Storage OPROM Confi gure (*Available if an onboard
MASS Storage Controller is detected.)
Select Enable to allow the user to boot from a onboard mass storage device. The
options are Enabled and Disabled.
Emulated IRQ Solution
Select Enabled to enable Emulation IRQ support. The options are Enabled and
Disabled.
PCI-Exp. I/O Performance
Some add-on cards perform faster with the coalesce feature, which limits the payload
size to 128 Bytes; while others, with a payload size of 256 Bytes which inhibits the
coalesce feature. Please refer to your add-on card user guide for the desired setting.
The options are Payload (256 Bytes) and Coalesce Enabled (128 Bytes).
PCI Parity Error Forwarding
The feature allows SERR and PERR errors detected in PCI slots to be sent
(forwarded) to the BIOS DMI Event Log for the user to review. The options are
Enabled and Disabled.
ROM Scan Ordering
This feature allows the user to decide which Option ROM to be activated fi rst. The
options are Onboard fi rst and Add-On fi rst.
Frequency for PCI-X#1 On Riser, Frequency for PCI-X#2-#3 On Riser
(Available when an Active Riser Card is present.)