1-14 Chapter 1: Product Overview
APM
Standby
•
System
is
in
a
low
power
state
with
some
power
savings
•
Most
devices
are
in
a
low
power
mode.
•
The
CPU
clock
is
slowed
or
stopped.
•
Operational
parameters
are
retained.
•
System
returns
quickly
to
the
APM
Enabled
State.
•
The
Resume
Timer
event
must
return
the
system
to
the
APM
Enabled
state.
•
User
activity
may
be
required
to
return
the
system
to
the
APM
Enabled
State.
•
The
operating
system
is
notified
after
the
system
transitions
to
the
APM
Enabled
State.
•
Prior
operation
resumes
after
returning
to
the
APM
Enabled
state.
•
Interrupts
must
still
be
processed
normally.
This
may
require
waking
up
the
CPU
temporarily
if
it
was
stopped.
•
The
CPU
may
be
stopped
again
when
the
APM
Driver
calls
the
CPU
Idle
function.
Some
(not
all)
specific
device
states:
•
Hard
Drive:
Standby
(motor
not
spinning,
interface
buffer
active)
•
Display:
CRT
–
Suspend
(No
image
on
screen,
LCD
–
Off
•
Video
Controller:
Standby
•
Chipset:
Standby
Entry:
a)
Programmable
timeout
b)
Under
software
control
Exit:
a)
Wake
On
LAN
c)
Wake
ON
Ring
d)
Wake
On
Alarm
e)
Wake
on
PS/2
keyboard
or
PS/2
mouse
activity
Summary of Contents for 7446
Page 1: ...NCR RealPOS 30 7446 Release 2 1 User Guide 2 B005 0000 1551 Issue E...
Page 90: ......
Page 98: ...3 8 Chapter 3 Setup...
Page 148: ...A 10 Appendix A Cables...
