Fujitsu MAT3300FC 사용자 설명서
Command Specifications
4-80
C141-C008
4.1.8 REZERO UNIT (01)
Bit
Byte
Byte
7 6 5 4 3 2 1 0
0 X‘01’
1
0 0 0 0 0 0 0 0
2
0 0 0 0 0 0 0 0
3
0 0 0 0 0 0 0 0
4
0 0 0 0 0 0 0 0
5
0 0 0 0 0 0 0 0
This command moves the read/write heads of the disk drive to the initial position
(physical cylinder 0 / physical track 0). A data block with the physical block
address of zero exists at the initial position. Initialization of the disk drive's
positioning control system and automatic adjustment are also performed by this
command.
(physical cylinder 0 / physical track 0). A data block with the physical block
address of zero exists at the initial position. Initialization of the disk drive's
positioning control system and automatic adjustment are also performed by this
command.
4.1.9 START/STOP UNIT (1B)
Bit
Byte
Byte
7 6 5 4 3 2 1 0
0 X‘1B’
1
0 0 0 0 0 0 0
Immed
2
0 0 0 0 0 0 0 0
3
0 0 0 0 0 0 0 0
4
0 0 0 0 0 0
LoEj
Start
5
0 0 0 0 0 0 0 0
This command controls starting and stopping of the disk drive's spindle motor.
Control of the spindle motor is performed through the "Start" bit in bit 0 of the
CDB byte 4.
Control of the spindle motor is performed through the "Start" bit in bit 0 of the
CDB byte 4.
The spindle motor can be stopped if this command is issued with the "Start" bit as
"0." On the other hand, the spindle motor can be started by specifying "1" in the
"Start" bit.
"0." On the other hand, the spindle motor can be started by specifying "1" in the
"Start" bit.
Bit 1 (LoEj (load/eject) of byte 4 of the CDB is the exclusive bit which controls
devices with replaceable recording media, and it has no meaning for the IDD.
The IDD disregards the value specified in this bit and controls starting and
stopping of the spindle motor in accordance with the "Start" bit only.
devices with replaceable recording media, and it has no meaning for the IDD.
The IDD disregards the value specified in this bit and controls starting and
stopping of the spindle motor in accordance with the "Start" bit only.