31
A
A
K
K
7
7
7
7
-
-
8
8
X
X
M
M
a
a
x
x
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
e
e
r
r
”
”
With this motherboard, AOpen provides a very special, useful feature for overclockers. When you
power-on the system, the BIOS will check last system
POST
status. If it succeeded, the BIOS will
enable “Watch Dog Timer” function immediately, and set the CPU
FSB
frequency by user’s setting
that stored in the BIOS. If system failed in BIOS POST, the “Watch Dog Timer” will reset the
system to reboot in five seconds. Then, BIOS will detect the CPU’s default frequency and POST
again. With this special feature, you can easily overclock your system to get higher system performance without removing the
cover of system housing, and be able to set the jumper to clear CMOS data when your system hanged.
BIOS
Clock Generator
CPU
AOpen
Watch Dog
Timer
Countdown about
5 seconds if fails
in POST
Reset Signal
Enable/Disable Signal
from BIOS
CPU ID Signal
