Load/Unload 1Bh - Sony DDS-4 Product Description Manual

6. COMMAND SPECIFICATION

6. 03 LOAD/UNLOAD 1Bh

Bit 7
Byte
0
1 Logical Unit Number
2
3
4
5 Unused (00b)
LOAD/UNLOAD allows the host to tell the drive to enable or disable the media for further operations.
Load:
When this bit is set, the drive loads the tape and positions it at the beginning of Partition 0. The load command is
used when the tape has been retained in the drive by the command sequence, PREVENT ALLOW MEDIA RE-
MOVAL (with prevent bit set), UNLOAD. The drive will automatically perform a Load operation when a tape is
inserted, a SCSI Reset is received, or when power is restored with a tape in the drive.
If the bit is not set (UNLOAD), the drive writes any buffered data to the tape, writes the EOD, then rewinds the tape
to BOM and ejects it.
Immed:
If this bit is set, status is returned as soon as the load or unload operation is initiated. Otherwise, the status is
returned after the operation has completed.
Re-Ten:
If this bit is set, the drive winds to EOM then rewinds to BOM before starting a normal loading sequence.
6 5 4
Operation Code (1Bh)
Reserved
3 2
Reserved
Reserved
Reserved
EOT
Reserved
SONY SDT-10000/SDT-11000 DDS Tape Drive
LOAD/UNLOAD
1 0
Immed
Re-Ten Load
6 - 9