User`s manual
4-10
X7SBA User's Manual
Memory Remapping
Select Enable to enable the functionality of Memory Remapping above 4GB. The
settings are Enabled and Disabled.
Enable V T- d
Select Enable to enable the functionality of the Intel Virtualization Technology for
Direct I/O support, which offers fully-protected I/O resource-sharing across the
Intel platforms, providing the user with greater reliability, security and availability
in networking and data-sharing. The settings are Enabled and Disabled.
High Precision Event Time
Select Yes to activate the High Precision Event Timer (HPET), which is capable
of producing periodic interrupts at a much higher frequency than a Real-time
Clock (RTC) can in synchronizing multimedia streams, providing smooth playback
and reducing the dependency on other timestamp calculation devices, such as
an x86 RDTSC Instruction embedded in a CPU. The High Precision Event Timer
is used to replace the 8254 Programmable Interval Timer. The options for this
feature are Yes and No.
Route Port 80h Cycles to
This feature allows the user to decide which bus to send debug information to.
The options are PCI and LPC.
USB Host Controller
This feature allows the user to congure the USB Host Controller setting for the USB
Host Controller Functions 0, 1, 2, 3, 7. The settings are Enabled and Disabled.
EHCI Controller
This feature enables the onboard Enhanced Host Controller Interface. The options
Enabled and Disabled.
Legacy USB Support
This setting allows you to enable support for Legacy USB devices. The settings
are Enabled and Disabled.