Mode Sense Command
August 2016 Commands 113
Mode Sense Header Data
Mode Sense—6 Byte Command returns a 4-byte header.
Mode Sense—10 Byte Command returns an 8-byte header
TABLE 3-68 Mode Sense (6) Header Data
Byte
Bit
76543210
0 Mode Data Length
1 Medium Type
2 WP Buffered Mode Speed
3 Block Descriptor Length
TABLE 3-69 Mode Sense (10) Header Data
Byte
Bit
76543210
0
thru
1
(MSB)
Mode Data Length
(LSB)
2 Medium Type
3 WP Buffered Mode Speed
4
thru
5
(MSB)
Reserved
(LSB)
6
thru
7
(MSB)
Block Descriptor Length
(LSB)
Parameter Value
Medium Type 0 = Vendor-specific (reserved)
WP: Write Protect 0 = Not file-protected
1 = File-protected
Buffered Mode 000b = Return Status on write commands after the data is
written on tape.
001b = Return status on write commands after data has been
transferred to the drive’s data buffer
Speed 0 = Default speed
1h = Lowest speed
2h = Next lowest speed
3h = Medium speed
4h = Next highest speed
5h = Highest speed