Specifications

174
A
A
K
K
7
7
3
3
-
-
1
1
3
3
9
9
4
4
O
O
n
n
l
l
i
i
n
n
e
e
M
M
a
a
n
n
u
u
a
a
l
l
Glossary
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
)
)
Traditional motherboard stores BIOS code in EPROM. EPROM can only be erased by
ultra-violet (UV) light. If BIOS has to be upgraded, you need to remove EPROM from
motherboard, clear by UV light, re-program, and then insert back.
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 using 100 MHz external bus clock, but the equivalent
speed is 200 MHz.