NCR RealPOS 70, User Manual

Page: 44 / 306

1-26 Chapter 1: Product Overview
Power Management
The BIOS supports the supports the Advanced Configuration and
Power Management Interface (ACPI) 1.1 specification. The 7402
supports the system power states defined by ACPI:
G3 Mechanical Off
A computer state that is entered and left by a mechanical means
Example:
Turning off the system’s power through the movement of a
large red switch.
Various government agencies and countries require this operating
mode. It is implied by the entry of this off state through a mechanical
means that no electrical current is running through the circuitry and
that it can be worked on without damaging the hardware or
endangering service personnel. The OS must be restarted to return to
the Working state. No hardware context is retained. Except for the real ‐
time clock, power consumption is zero.
G2/S5 Soft Off
A computer state where the computer consumes a minimal amount of
power. No user mode or system mode code is run. This state requires a
large latency in order to return to the Working state. The system’s
context will not be preserved by the hardware. The system must be
restarted to return to the Working state. It is not safe to disassemble the
machine in this state.