Intel D815EEA User Manual

Intel
®
Desktop Board D815EEA Technical Product Specification
40
The BIOS enables APM by default; but the operating system must support an APM driver for the
power management features to work. For example, Windows 98 supports the power management
features upon detecting that APM is enabled in the BIOS.
For information about Refer to
Enabling or disabling power management in the BIOS Setup program Section 4.6, page 112
The D815EEA board’s compliance level with APM Table 3, page 16
1.13.1.2 ACPI
ACPI gives the operating system direct control over the power management and Plug and Play
functions of a computer. The use of ACPI with the D815EEA board requires an operating system
that provides full ACPI support. ACPI features include:
• Plug and Play (including bus and device enumeration) and APM support normally contained in
the BIOS
• Power management control of individual devices, add-in boards (some add-in boards may
require an ACPI-aware driver), video displays, and hard disk drives
• Methods for achieving less than 30-watt system operation in the power-on/standby sleeping
state
• A Soft-off feature that enables the operating system to power-off the computer
• Support for multiple wake up events (see Table 10 on page 42)
• Support for a front panel power and sleep mode switch. Table 8 lists the system states based
on how long the power switch is pressed, depending on how ACPI is configured with an
ACPI-aware operating system.
Table 8. Effects of Pressing the Power Switch
If the system is in this state…
…and the power switch is
pressed for …the system enters this state
Off (ACPI G2/G5 – Soft off) Less than four seconds Power-on
(ACPI G0 – working state)
On (ACPI G0 – working state) Less than four seconds Soft-off/Standby
(ACPI G1 – sleeping state)
On (ACPI G0 – working state) More than four seconds Fail safe power-off
(ACPI G2/G5 – Soft off)
Sleep (ACPI G1 – sleeping
state)
Less than four seconds Wake up
(ACPI G0 – working state)
Sleep (ACPI G1 – sleeping
state)
More than four seconds Power-off
(ACPI G2/G5 – Soft off)
For information about Refer to
The D815EEA board’s compliance level with ACPI Section 1.3, page 16

Intel D815EEA Specifications

General

Brand	Intel
Model	D815EEA
Category	Motherboard
Language	English