6 acpi configuration, Parallel port mode [normal, Acpi 2.0 features [no – Asus RS161-E4/PA2 User Manual
Page 92: Headless mode [disabled, Acpi ems support [disabled, Acpi mcfg support [enabled

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Chapter 4: BIOS setup
V00.00 (C)Copyright 1985-2004, American Megatrends, Inc.
BIOS SETUP UTILITY
Advanced
ACPI Configuration
ACPI 2.0 Features
[No]
Headless Mode
[Disabled]
ACPI EMS Support
[Disabled]
ACPI MCFG Support
[Enabled]
→← Select Screen
↑↓
Select Item
+-
Change Field
F1
General Help
F10 Save and Exit
ESC Exit
Parallel Port Mode [Normal]
Allows you to select the Parallel Port mode. Configuration options: [Normal]
[Bi-directional] [ECP] [EPP] [ECP & EPP]
EPP Version [1.9]
Allows selection of the Parallel Port EPP version. This item appears
when the Parallel Port Mode is set to [EPP] or [ECP & EPP].
Configuration options: [1.9] [1.7]
ECP Mode DMA Channel [DMA3]
Appears when the Parallel Port Mode is set to [ECP] or [ECP & EPP]. This item
allows you to set the Parallel Port ECP DMA.
Configuration options: [DMA0] [DMA1] [DMA3]
Parallel Port IRQ [IRQ7]
Sets the Parallel port IRQ. Configuration options: [IRQ5] [IRQ7]
5.4.6 ACPI Configuration
ACPI 2.0 Features [No]
Enables or disables the ACPI 2.0 features. Configuration options: [Yes] [No]
Headless Mode [Disabled]
Enables or disables the headless operation mode in ACPI. Configuration options:
[Disabled] [Enabled]
ACPI EMS Support [Disabled]
Enables or disables the ACPI EMS support. Configuration options: [Disabled]
[Enabled]
ACPI MCFG Support [Enabled]
When Enabled, BIOS will reoprt ACPI MCFG Table. Configuration options:
[Disabled] [Enabled]
Enable RSDP pointers to 64-
bit Fixed System Description
Tables. Different ACPI
version has some addition.