Ata/100; Ata/133; Bios (Basic Input/Output System); Bus Master Ide (Dma Mode) - AOpen AX45-533 Online Manual
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A
X
4
5
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5
3
3
/
A
X
4
A
X
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5
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5
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A
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4
A
T
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1
0
0
A
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0
ATA/100 is a new IDE specification under developing. ATA/100 uses both rising edge and falling edge as
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
T
A
/
1
3
3
A
T
A
/
1
3
3
ATA/133 is a new IDE specification under developing. ATA/133 uses both rising edge and falling edge as
reduced to 30ns. The data transfer rate is (1/30ns) x 2 bytes x 2 = 133MB/s. To use ATA/133, you need special 80-wire IDE cable, the same
as ATA/66.
B
I
O
S
(
B
a
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i
c
I
n
p
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t
/
O
B
I
O
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B
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p
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/
O
BIOS is a set of assembly routine/program that reside in
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
u
s
M
a
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r
I
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(
D
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B
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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.
5
-
5
3
3
N
5
-
5
3
3
N
u
t
p
u
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S
y
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)
u
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)
EPROM
A
m
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)
A
m
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)
or
Flash
ROM. BIOS controls Input/output devices and other hardware
83
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M
a
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a
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O
n
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i
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M
a
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ATA/66
but clock cycle time is
ATA/66
but clock cycle time is
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