Datasheet

Chapter 4: BIOS
4-9
Cache Extended Memory
If enabled, this feature will allow the data stored in the extended memory area
to be cached (written) into a buffer, a storage area in Static DROM (SDROM) or
written into L1, L2, L3 cache inside the CPU to speed up CPU operations. Select
Uncached to disable this function. Select Write Through to allow data to be cached
into the buffer and written into the system memory at the same time. Select Write
Protect to prevent data from being written into the system memory area above 1MB.
Select Write Back to allow the CPU to write data back directly from the buffer without
writing data to the System Memory for fast CPU data processing and operation.
The options are Uncached, Write Through, Write Protect, and Write Back.
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 the GLAN ports as specifi ed.
The options are Disabled and Enabled.
Default Primary Video Adapter
This feature allows the user to specify which video adapter to be used as the
default primary video adapter--the onboard video adapter or others. The options
are Other and Onboard Video.
Emulated IRQ Solutions
When Enabled, the Emulated IRQ Scheme will allow PCI devices to run on legacy
operating systems that use the MSI mechanism to generate INTX compatible
interrupts. The options are Disabled and Enabled.
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 perform better 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 the PCI slots to be sent
(forwarded) to the BIOS DMI Event Log for the user to review. The options are
Enabled and Disabled.