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SCSI Commands: 23BMODE SENSE
3.11.3.3
3.11.3.4
Field
Bytes
Bits
Block
3
Descriptor
Length
Reserved
When Buffered Mode is 1, a WRITE command is terminated when the data is
transferred to the internal buffer of the drive. When Buffered Mode is 0 a WRITE
command is not terminated until all data has been transferred to tape.
MODE SENSE(10) Parameter Header
Bits
Byte
7
0
(MSB)
1
2
3
WP
4
5
6
(MSB)
7
MODE SENSE(10) Parameter Field Descriptions
Field
Bytes
Bits
Mode Data
0-1
Length
Medium
1
Type
WP
3
7
Buffered
3
4-6
Mode
Speed
3
0-3
Block
6-7
Descriptor
Length
Reserved
When Buffered Mode is 1, a WRITE command is terminated when the data is
transferred to the internal buffer of the drive. When Buffered Mode is 0 a WRITE
command is not terminated until all data has been transferred to tape.
Description
0 = No Block Descriptor follows.
8 = 8-byte Block Descriptor follows.
All reserved bits must be 0.
6
5
4
Mode Data Length
Medium Type
Buffered Mode
Reserved
Reserved
Block Descriptor Length
Description
MODE SELECT:
Always 0.
MODE SENSE:
The number of bytes of data available.
Identifies the type of media currently in the drive.
00h = Data Cartridge
01h = Cleaning Cartridge
80h = WORM Cartridge
MODE SELECT:
Ignored.
MODE SENSE:
0 = The cartridge is not write protected.
1 = the cartridge is write protected.
0 = Un-buffered mode.
1 = Buffered mode (default).
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)
0 = No Block Descriptor follows.
8 = 8-byte Block Descriptor follows.
All reserved bits must be 0.
3
2
1
Speed
Page 110
0
(LSB)
(LSB)
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