101
A
A
X
X
4
4
L
L
/
/
A
A
X
X
4
4
L
L
-
-
N
N
O
O
n
n
l
l
i
i
n
n
e
e
M
M
a
a
n
n
u
u
a
a
l
l
F
F
l
l
a
a
s
s
h
h
R
R
O
O
M
M
Flash ROM can be re-programmed by electronic signals. It is easier for BIOS to upgrade by a flash utility, but it is also easier to
e infected by virus. Because of increase of new functions, BIOS size is increased from 64KB to 256KB (2M bit). AOpen AX5T is
ash ROM size is moving to 4M bit on AX6C (Intel 820) and MX3W
for jumper-less and battery-less design.
ans CPU external bus clock.
b
the first board to implement 256KB (2Mbit) Flash ROM. Now fl
(Intel 810) motherboard. , AOpen motherboard uses EEPROM
F
F
S
S
B
B
(
(
F
F
r
r
o
o
n
n
t
t
S
S
i
i
d
d
e
e
B
B
u
u
s
s
)
)
C
C
l
l
o
o
c
c
k
k
FSB Clock me
CPU internal clock = CPU FSB Clock x CPU Clock Ratio
I
I
2
2
C
C
B
B
u
u
s
s
See
