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MAC1 LAN1 Bridge
Settings are Enabled and Disabled for MAC1 LAN1 bridge.
Legacy USB Support
Select "Enabled" to enable the support for USB Legacy. Disable Legacy support if
there are no USB devices installed in the system. "Auto" disabled Legacy support
if no USB devices are connected. The options are Disabled, Enabled and Auto.
Processor & Clock Options
This submenu lists CPU information and the following settings:
MTRR Mapping
This determines the method used for programming CPU MTRRs when 4 GB or
more memory is present. The options are Continuous, which makes the PCI
hole non-cacheable, and Discrete, which places the PCI hole below the 4 GB
boundary.
Thermal Throttling
Used to Enable or Disable thermal to generate a power management event.
Power Now
This setting is used to Enable or Disable the AMD Power Now feature.
I/O Device Confi guration
Serial Port1 Address
This option specifi es the base I/O port address and Interrupt Request address of
serial port 1. Select "Disabled" to prevent the serial port from accessing any system
resources. When this option is set to Disabled, the serial port physically becomes
unavailable. Select "3F8/IRQ4" to allow the serial port to use 3F8 as its I/O port
address and IRQ 4 for the interrupt address. The options are Disabled, 3F8/IRQ4,
3E8/IRQ4 and 2E8/IRQ3.
Serial Port2 Address
This option specifi es the base I/O port address and Interrupt Request address of
serial port 2. Select "Disabled" to prevent the serial port from accessing any system
resources. When this option is set to "Disabled", the serial port physically becomes
unavailable. Select "2F8/IRQ3" to allow the serial port to use 2F8 as its I/O port
address and IRQ 3 for the interrupt address. The options are Disabled, 2F8/IRQ3,
3E8/IRQ4 and 2E8/IRQ3.
7-11
Chapter 7: BIOS
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