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Memory Timing Confi guration
Memory Timing Confi g
This option allows you to set the DRAM timing confi guration for the system.
Options include Auto or Manual.
Memory Clock Speed
This options is only confi gurable if Memory Timing Confi g is set to
Manual. This option sets the memory clock speed to either 200 Mhz,
266 Mhz, 333 Mhz, 400 Mhz, 533 Mhz, 667 Mhz, 800 Mhz or 933 Mhz.
HT Speed Support
This option allows you to select an HT Link Frequency. Options are H1 and Auto.
Note: A cold reset is required if you change this option.
IOMMU
This setting is used to enable or disable or set the GART size in systems without
AGP. Options include Enabled and Disabled.
Memory Power Policy
This sets the Memory Power Policy to either Enabled or Disabled.
SouthBridge Confi guration
OHCI/EHCI HC Device Functions
These settings allow you to either Enable or Disable functions for OHCI or EHCI
bus devices.
USB 2.0 Controller Mode
Use this setting to confi gure the USB 2.0 Controller in either Hi-Speed (480
Mps) or Full Speed (12 Mps) mode. Options include Enabled (Hi-Speed Mode)
or Disabled (Full Speed Mode).
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.
4-7
Chapter 4: BIOS
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