Software • BIOS options
Chapter 4 Software
Power Panel 500 user's manual V1.40
187
1.5.8 ACPI table/features control
InsydeH2O Setup Utility Rev. *
Advanced
High Performance Event
Timer Support in Windows
XP. Enable this
feature, the HPET table
will be add-into ACPI
Tables.
ACPI Table/Features Control
FACP – C2 Latency Value <Disabled>
FACP – C3 Latency Value <Disabled>
HPET – HPET Support <Enabled>
APIC - IO APIC Mode <Enabled>
F1
F9
Esc
Enter
F10
Help Select Item
Change Values Setup Defaults
Exit Select Menu
Select SubMenu
Save and Exit
F5/F6
Figure 114: US15W Advanced - ACPI Table/Features Control
BIOS setting
Function
Configuration options
Effect
Enabled
Enables this function
Sets a latency of 1 µs (i.e. the C2 state will be
entered within 1 µs and exited again within 1 µs)
FACP – C2 latency value
1)
Option for setting a latency period in the C2 state
Disabled
Disables this function
Enabled
Enables this function
Sets a latency of 85 µs (i.e. the C3 state will be
entered within 85 µs and exited again within 85
µs)
FACP – C3 latency value
1)
Option for setting a latency period in the C3 state
Disabled
Disables this function
Enabled
Enables this function
This function is recommended for multimedia
applications.
HPET – HPET support
The HPET is a timer inside the PC. It is able to
trigger an interrupt with a high degree of accu-
racy, which allows other programs to better syn-
chronize a variety of applications.
Disabled
Disables this function
Enabled
Enables this function
APIC - I/O APIC mode
This option controls the support of the advanced
programmable interrupt controller in the proces-
sor.
Disabled
Disables this function
Warning!
Windows XP will not be started if this
setting is disabled.
Table 130: US15W Advanced - ACPI table/features control - Configuration options
1)
These settings are only possible if
C-States
under the
Advanced CPU control
menu item is set to
Enabled
.
1.5.9 PCI Express root port 1
Warning!
Improper settings can cause instability or device problems. It is therefore strongly recommended that
these settings only be changed by experienced users.
