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ATAPI Interface Chapter 5
STT8000A Product Manual Page 41
Load/Unload command
Bit
Byte
76543210
0 Operation code (1Bh)
1 Reserved
2 Reserved
3 Reserved
4 Reserved Re-Ten Load
5 Reserved
LOAD (with or without Re-tension) is accepted any time a tape is present in the
drive, (even if status indicates it is already loaded). This command includes implicit
rewind and select partition 0 operations. The DSC bit is reset (0) after this command
is accepted and is set (1) when the drive has initialized and is ready. REQUEST
SENSE can then be used to verify successful command completion.
The UNLOAD option(s) re-tensions the tape (if selected) and moves the tape to the
logical BOT or EOT end (as selected), then causes the drive to report not ready to
any subsequent media access commands. Either a manual load operation or LOAD
command is required for the drive to return to ready.