5 The Power System
SA200 71
•
Accounts for o
eratin
s
stem inactivit
and
ower
demands.
•
Accounts for a
lication inactivit
and
ower demands.
•
Allows a
lication
ro
rams, o
eratin
s
stems, and
the s
stem BIOS to share
ower mana
ement features
to ensure more efficient use of
ower.
•
Determines when
ower savin
features should be
active.
•
O
erates trans
arentl
behind the scenes.
While
ou are runnin
an APM-aware a
lication, the APM
detects an
s
stem inactivit
. If APM detects that either the
o
eratin
s
stem or the a
lication is waitin
for in
ut (or is in
some other idle state), APM reduces the CPU to minimum s
eed.
When hi
h s
eed is re
uired a
ain, APM increases the CPU to
maximum s
eed.
Because APM constantl
monitors all s
stem activit
, accounts for
our la
to
’s
ower consum
tion, and controls all
ower savin
features,
our la
to
will realize si
nificant additional
ower
savin
s.
Because APM is software based,
ou must set u
our s
stem
software confi
uration to load APM for it to o
erate automaticall
.
When the APM driver is correctl
confi
ured, APM loads and
becomes active each time
ou boot
our com
uter. An APM icon
also a
ears in
our la
to
’s Windows 95 Control Panel. When
ou double-click on this icon, a dialo
box dis
la
s and
ou can
select between standard, advanced, or no
ower mana
ement
modes. The dialo
box also contains a batter
ower status
au
e
that indicates the current batter
ower level and status.
Refer to
our Windows 95 documentation for a more thorou
h
ex
lanation of the APM interface and its features.
lonestar.boo : sa200.fm Page 71 Friday, March 6, 1998 10:53 AM
