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SCSI Commands
Quantum DLT 7000 Tape System 5-131
5.13 READ BLOCK LIMITS COMMAND (05h)
The READ BLOCK LIMITS command directs the tape drive to report it’s block
length limits.
Bit
Byte
7 6 5 4 3 2 1 0
0 Operation Code (05h)
1 Logical Unit Number Reserved
2 - 4 Reserved
5 Unused Reserved Flag Link
Figure 5–62 READ BLOCK LIMITS Command Descriptor Block - Data Format
The READ BLOCK LIMITS data shown below is sent during the DATA IN
phase of the command. The command does not reflect the currently selected
block size, only the available limits. MODE SENSE is the command that returns
the current block size.
Bit
Byte
7 6 5 4 3 2 1 0
0 Reserved
1 - 3
(MSB)
Maximum Block Length
(LSB)
4 - 5
(MSB)
Minimum Block Length (0001h)
(LSB)
Figure 5–63 READ BLOCK LIMITS Data - Data Format