26
M
M
X
X
4
4
G
G
O
O
n
n
l
l
i
i
n
n
e
e
M
M
a
a
n
n
u
u
a
a
l
l
A
A
O
O
p
p
e
e
n
n
“
“
W
W
a
a
t
t
c
c
h
h
D
D
o
o
g
g
T
T
i
i
m
m
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r
r
”
”
AOpen provides a special and useful feature on this motherboard for overclockers. When you power-on the system, BIOS will
check last system
status. If it succeeds, the BIOS will enable “Watch Dog Timer” function immediately, and set the CPU
frequency according to user’s settings stored in BIOS. If system fails in BIOS POST, then “Watch Dog Timer” will reset the
system to reboot in five seconds. BIOS will detect the CPU’s default frequency and POST again. With this special feature, you
can easily overclock your system to get a higher system performance without removing the system housing and save the hassle
from setting the jumper to clear CMOS data when system hangs.
BIOS
Clock Generator
CPU
AOpen
Watch Dog
Timer
CPU ID Signal
Enable/Disable Signal
from BIOS
Reset Signal
Countdown about
5 seconds if fails
in POST
