User manual

APC-3580 User Manual
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ACPI 2.0 Features [No]
Use the ACPI 2.0 Features option to enable the ACPI (Advanced Configuration and Power Interface)
features. By enabling this feature the system RSDP (Root System Description Pointer) is able to
obtain physical addresses for other 64-bit fixed system
description tables.

No Yes
DEFAULT
RSDP pointers to 64-bit fixed systems are not
provided to the system RSDP pointers to 64-bit
fixed systems are provided to the system
ACPI APIC Support [Enabled]
Use the ACPI APIC Support option to add a pointer to an ACPI APIC table in the RSDT (Root System
Description Table). The RSDT is an array of pointers that direct the system to the physical addresses
of other description tables. The RSDT is the main ACPI table. The RSDP is located in low memory
space of the system and provides the physical address of the RSDT. The RSDT itself is identified in
memory because it starts with the signature "RSDT."

Disabled Pointers to the APIC APIC table are not be provided in the RSDT

Enabled DEFAULT Pointers to the APIC APIC table are provided in the RSDT
AMI OEMB table [Enabled]
Use the AMI OEMB table option to add a pointer to an OEMB table in the RSDT table and the
Extended System Description Table (XSDT), which accommodates physical addresses of description
headers that are larger than 32-bits. Notice that both the XSDT and the RSDT can be pointed to by the
RSDP structure.
.
Disabled Pointers to the AMI OEMB table are not provided in the RSDT and the
XSDT
Enabled DEFAULT Pointers to the AMI OEMB table are provided in the RSDT and the XSDT
Headless Mode [Disabled]
Use the Headless Mode option to update the ACPI FACP (Fixed ACPI Description Table) to
indicate headless operations, i.e. a computer without a monitor, keyboard and mouse.

Disabled DEFAULT The FACP is not updated to indicate headless mode

Enabled The FACP is updated to indicate headless mode