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CHAPTER 4 Command Specifications
4.1
4.2
4.3
4.4
This chapter describes detailed specifications of the SCSI commands which the
IDD is equipped with and how to use them.
4.1 Control/Sense Commands
4.1.1 TEST UNIT READY (00)
Bit
7
Byte
0
1
0
2
0
3
0
4
0
5
0
This command checks the status of the disk drive.
If the IDD is in the ready state and it is possible for it to be used by the INIT
(initiator) which issues this command, a GOOD status is reported for this
command.
If the IDD is not in the ready state, it reports a CHECK CONDITION status for
this command. The sense data generated at this time indicate the IDD's state at
this time.
C141-C009
Control/Sense Commands
Data Access Commands
Format Commands
Maintenance, Diagnostic Commands
6
5
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
2
X'00'
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
4-1
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