Test Unit Ready - Sony CDU-541 Interface Manual

CDU-541 CD-ROM DRIVE SCSI INTERFACE MANUAL
5.2.34. TEST UNIT READY
Command
==============================================================================
Bit: 7
6
5
4
3 2 1
o
Byte
i
==============================================================================
o
I
Operation Code (OOh) :
-----1-----------------------------------------------------------------------1
1 : Logical Unit Number: Reserved :
-----i-----------------------------------------------------------------------:
2
i
Reserved :
-----i-----------------------------------------------------------------------:
3 :
Reserved
i
-----1-----------------------------------------------------------------------:
4 I
Reserved :
-----1-----------------------------------------------------------------------1
5 1
Control Byte
i
==============================================================================
The TEST UNIT READY command provides a means to check if the logical unit is
in the ready condition. This is not a request for a self test.
If the ready condition does not exist a CHECK CONDITION status will be
returned and the appropriate additional sense code set.
5-61