1-24 Chapter 1: 7401-2xxx and 3xxx Product Overview
When in Stand By mode, the Processor Board reduces power
consumption by using the processor Sy ste m Management Mode
(SMM) capabilities and also spinning down h ard driv es a n d turn ing o ff
VESA DPMS compliant monitors. During setup, the user may select
which DPMS mode (Stand By, Suspend, Auto, or Off) is sent to the
monitor. The ability to respond to external interrupts is fully
maintained while in Stand By mode permitting t h e syst e m to se rv ice
requests such as in-coming data or network mes s a ge s wh ile
unattended. Keyboard or mouse activity may also be used to take the
system out of the energy saving Stand By mode. When this occurs, the
monitor and IDE drives are turned back on immediately.
Advanced Power Management is achieved by the following:
• DOS requires a driver (FS-APM.dos)
• NT requires a driver (NCRSYSM.SYS)
• Windows 2000 must enable the operating system APM setting. The
OS APM setting is disabled by default. NCR Gold Drivers are
enabled in this setting by selectin g:
Start, Control Panel, Power Options, APM tab and check the box
Enable Advance Power Management Support
Click Ok to finish.
ACPI
The Release 2.5 terminal BIOS supports Advance Configu ra t ion P o wer
Interface (ACPI) 2.0 power management. Primary differences between
APM and ACPI are as follows:
• On an APM- managed terminal, the BIOS determines when to
switch between power states and also performs the switch. When
using ACPI, the operating system d e t erm in e s wh e n to swit ch and
informs the BIOS to perform the switch.
• APM must be enabled in the BIOS. ACPI is automatically active
with the operating system.
• ACPI Setup options are available in the OS Control Panel.