A
A
X
X
4
4
T
T
-
-
5
5
3
3
3
3
P
P
r
r
o
o
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
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g
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T
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m
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”
”
AOpen provides a special and useful feature on this motherboard for overclockers. When you
power-on the system, the BIOS will check last system
status. If it succeeded, the BIOS will
enable “Watch Dog Timer” function immediately, and set the CPU
frequency according to
user’s settings 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 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
Countdown about
5 seconds if fails
in POST
Reset Signal
Enable/Disable Signal
from BIOS
CPU ID Signal
24
