Chapter 4: AMI BIOS
4-17
Fan1 ~ Fan 6 Reading
This feature displays the fan speed readings from fan interfaces Fan1 through
Fan5.
CPU Vcore, AVCC, 3.3Vcc, 12V, V_DIMM, 5V, -12V, 3.3Vsb, and Vbat
ACPI Configuration
Use this feature to configure Advanced Configuration and Power Interface (ACPI)
power management settings for your system.
High Performance Event Timer
Select Enabled to activate the High Performance Event Timer (HPET) that produces
periodic interrupts at a much higher frequency than a Real-time Clock (RTC) does in
synchronizing multimedia streams, providing smooth playback and reducing the de-
pendency on other timestamp calculation devices, such as an x86 RDTSC Instruc-
tion embedded in the CPU. The High Performance Event Timer is used to replace
the 8254 Programmable Interval Timer. The options are
Enabled
and Disabled.
PS2 KB/MS Wakeup
This feature is used to awaken the system from Standby mode by a PS/2 mouse or
PS/2 keyboard. This must be enabled in the system level and Operating System
(O/S) as well, if supported).
S1 (OS Control)
- Enables system wake up from S1 (default).
S5 (OS Control) - Enables system wake up from S1/S3/S4/S5.
Force Enable - Wake up support is always enabled regardless whether it is
disabled in the O/S.
Force Disable - Wake up support is always disabled regardless whether it is
enabled in the O/S.
ACPI Aware O/S
Enable ACPI support if it is supported by the OS to control ACPI through the Operat-
ing System. Otherwise, disable this feature. The options are
Yes
and No.
ACPI APIC Support
Select Enabled to include the ACPI APIC Table Pointer in the RSDT (Root System
Description Table) pointer list. The options are
Enabled
and Disabled.
APIC ACPI SCI IRQ
When this item is set to Enabled, APIC ACPI SCI IRQ is supported by the system.
The options are Enabled and
Disabled
.
