AOpen AX4L, Онлайн-руководство

Страница: 100 / 116

100
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
E E E E P P R R O O M M ( ( E E l l e e c c t t r r o o n n i i c c E E r r a a s s a a b b l l e e P P r r o o g g r r a a m m m m a a b b l l e e R R O O M M ) )
Also known as E
2
PROM. Both EEPROM and Flash ROM can be re-programmed by electronic signals, but the interface
technology is different. Size of EEPROM is much smaller than flash ROM.
E
E
P
P
R
R
O
O
M
M
(
(
E
E
r
r
a
a
s
s
a
a
b
b
l
l
e
e
P
P
r
r
o
o
g
g
r
r
a
a
m
m
m
m
a
a
b
b
l
l
e
e
R
R
O
O
M
M
)
)
EPROM. EPROM can only be erased by ultra-violet (UV) light. If BIOS has to be
re-program, and then insert back.
using 100 MHz external bus clock, but the equivalent speed is 200 MHz.
F F C C - - P P G G A A ( ( F F l l i i p p C C h h i i p p - - P P i i n n G G r r i i d d A A r r r r a a y y ) )
FC means Flip Chip, FC-PGA is a package of Intel for Pentium III CPU. It can plug into SKT370 socket.
Traditional motherboard stores BIOS code in
upgraded, you need to remove EPROM from motherboard, clear by UV light,
E
E
V
V
6
6
B
B
u
u
s
s
EV6 Bus in the technology of Alpha processor from Digital Equipment Corporation. EV6 bus uses both rising and falling clock
edge to transfer data, similar as DDR SDRAM or ATA/66 IDE bus.
EV6 Bus Speed = CPU external bus clock x 2.
For example, 200 MHz EV6 bus is actually
F
F
C
C
C
C
D
D
o
o
C
C
(
(
D
D
e
e
c
c
l
l
a
a
r
r
a
a
t
t
i
i
o
o
n
n
o
o
f
f
C
C
o
o
n
n
f
f
o
o
r
r
m
m
i
i
t
t
y
y
)
)
The DoC is component certification standard of FCC EMI regulations. This standard allows DIY component (such as
motherboard) to apply DoC label separately without a shielding of housing.