85
M
M
X
X
3
3
6
6
C
C
E
E
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
T
T
A
A
/
/
1
1
0
0
0
0
ATA/100 is a new IDE specification under developing. ATA/100 uses both rising edge and falling edge as
but clock cycle
time is reduced to 40ns. The data transfer rate is (1/40ns) x 2 bytes x 2 = 100MB/s. To use ATA/100, you need special 80-wire
IDE cable, the same as ATA/66.
A
A
T
T
A
A
/
/
1
1
3
3
3
3
Compared to traditional ATA/100, ATA/133 has been up to 33 percent increase in interface speed with transfer rate of 133MB/s.
ATA/133 performance is ideal for new operating systems, such as Window XP, that demand more storage space and faster data
transfer rates from more responsive computing experiences.
B
B
I
I
O
O
S
S
(
(
B
B
a
a
s
s
i
i
c
c
I
I
n
n
p
p
u
u
t
t
/
/
O
O
u
u
t
t
p
p
u
u
t
t
S
S
y
y
s
s
t
t
e
e
m
m
)
)
BIOS is a set of assembly routine/program that reside in
. BIOS controls Input/output devices and other
hardware devices of motherboard. In general, to provide hardware independent portability, operation system and drivers is
required to access BIOS without directly access hardware devices.
B
B
u
u
s
s
M
M
a
a
s
s
t
t
e
e
r
r
I
I
D
D
E
E
(
(
D
D
M
M
A
A
m
m
o
o
d
d
e
e
)
)
The traditional PIO (Programmable I/O) IDE requires the CPU to involve in all the activities of the IDE access including waiting
for the mechanical events. To reduce the workload of the CPU, the bus master IDE device transfers data from/to memory
without interrupting CPU, and releases CPU to operate concurrently while data is transferring between memory and IDE device.
You need the bus master IDE driver and the bus master IDE HDD to support bus master IDE mode.
