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Chapter 4 SCSI Commands
READ BLOCK LIMITS Command (05h)
DLT-S4 Interface Reference Guide
262
READ BLOCK LIMITS Command (05h)
4
The
READ BLOCK LIMITS
command directs the tape drive to report its
block length limits.
Figure 126
READ BLOCK
LIMITS
Command Descriptor
Block — Data Format
The
READ BLOCK LIMITS
data shown in
figure 127
. The command does
not reflect the currently selected block size, only the available limits. The
MODE SENSE
command returns the current block size.
Figure 127
READ BLOCK
LIMITS
Data
—
Data Format
Bit
7
6
5
4
3
2
1
0
Byte
0
Operation Code (05h)
1 — 4
Reserved
5
Control
Bit
Byte
7
6
5
4
3
2
1
0
0
Reserved
Granularity (0)
1 — 3
(MSB)
Maximum Block Length (0xFFFFFC)
(LSB)
4 — 5
(MSB)
Minimum Block Length (0004H)
(LSB)