Chapter 1: Product Overview 1-21
Note: An external alphanumeric keyboard is recommended for
running the BIOS CMOS Setup Utility. Otherwise, a Touch Screen can
be used.
Plug and Play
The Processor BIOS also has a setup option to support the Windows
runtime plug and play utilities. When this option is selected, only
devices critical to boot are assigned resources by the BIOS. Device
Node information is available for all devices to ensure compatibility
with Windows 95. System configuration information is stored in ESCD
format. The ESCD data is cleared upon loss of the CMOS voltage.
Advanced Power Management
The Processor BIOS has support for both 1.1 and 1.2 Advanced Power
Management (APM). The version of APM drivers loaded in the
operating system by the user determines what specification the BIOS
adheres too. In either case the energy saving Standby mode can be
initiated by a keyboard hot key sequence or a time‐out period set by
the user.
When in Stand‐by mode, the Processor Board reduces power
consumption by utilizing the processor System Management Mode
(SMM) capabilities and also spinning down hard drives and turning off
VESA DPMS compliant monitors. During setup, the user may select
which DPMS mode (Stand By, Suspend, or Off) is sent to the monitor.
The ability to respond to external interrupts is fully maintained while
in Stand‐by mode enabling the system to service requests such as in‐
coming data or network messages while unattended. The user may
also select any keyboard or mouse activity to take the system out of the
energy saving Standby mode. When this occurs, the monitor and IDE
drives are turned back on immediately.
APM is disabled in BIOS by default; therefore, the user must enable
this feature. The system must be configured with an APM driver in
order for the system power saving features to take effect.