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SCSI Commands: 22BMODE SELECT
Page
81
3.10.3.3
MODE SELECT(10) Parameter Header
Byte
Bits
7 6 5 4 3 2 1 0
0
(MSB)
1
Mode Data Length
(LSB)
2
MEDIUM TYPE
3
WP Buffered
Mode
Speed
4
Reserved
5
Reserved
6
(MSB)
7
Block Descriptor Length
(LSB)
3.10.3.4
MODE SELECT(10) Parameter Header Field Descriptions
Field
Bytes
Bits
Description
Mode Data
Length
0-1 MODE
SELECT:
Always
0.
MODE SENSE:
The number of bytes of data available.
MEDIUM
TYPE
1
00h = Data medium
01h = Cleaning medium
80h = WORM medium
WP 3
7
MODE
SELECT:
Ignored.
MODE SENSE:
0 = The cartridge is not write protected.
1 = the cartridge is write protected.
Buffered
Mode
3
4-6
0 = Un-buffered mode.
1 = Buffered mode (default).
Speed 3
0-3
This field indicates the speed at which the tape in the cartridge may
be used. Other speeds may be supported for manufacturing
purposes.
0 = variable speed (default)
Block
Descriptor
Length
6-7
0 = No Block Descriptor follows.
8 = 8-byte Block Descriptor follows.
Reserved
All reserved bits must be 0.
When Buffered Mode is 1, a WRITE command is completed when the data is
transferred to the internal buffer of the drive. When Buffered Mode is 0 a WRITE
command is not completed until all data has been transferred to tape.
3.10.4
MODE SELECT Block Descriptor
The following table presents the Parameter List block descriptor.
Byte
Bits
7 6 5 4 3 2 1 0
0
Density Code
1
Reserved
2
Reserved
3
Reserved
4
Reserved
5
(MSB)
6
7
Block Length
(LSB)
Summary of Contents for LTO 4
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