Fujitsu MAX3073NC - SCSI,80, Dell DC961,Hard Drive Scsi Logical Interface Specifications page 39

•
Power on
•
Reset
•
TARGET RESET
•
Transciever Mode Changed to SINGLE-ENDED
•
Transciever Mode Changed to LVD
•
Mode parameters changed
•
Reservations Preempted
•
Reservations Released
•
Registrations Preempted
•
Commands cleared by another INIT
•
Spindle synchronized
•
Spindle not synchronized
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Microcode has been changed
•
Changed Operating Definition
•
Device Identifier Changed
However, if the IDD responds with a BUSY status or TASK SET FULL status due to its not being able to
receive the command that was issued, the UNIT ATTENTION condition is not cleared.
The above CHECK CONDITION status response that is the cause of the UNIT ATTENTION condition
hold can be prohibited by the specification of the CHANGE DEFINITION command. When the CHECK
CONDITION status response is prohibited, the IDD executes the commands it receives normally, except
in the case of a RESERVATION CONFLICT status, BUSY status or TASK SET FULL status. In this
case, the UNIT ATTENTION condition for the INIT that issued that command is cleared.
See Section 3.1.4 "CHANGE DEFINITION" concerning setting details.
(2) INQUIRY command
The INQUIRY command is executed normally, but the UNIT ATTENTION condition is not cleared.
(3) REQUEST SENSE command
One of the following operations is performed depending on whether or not the IDD is in the sense data
hold state (shown in Section 1.6).
a. In the case of a Sense Data Hold state
The IDD executes the REQUEST SENSE command normally and sends the sense data which are
being held to the INIT. In this case, the UNIT ATTENTION condition is not cleared.
b. In the case of a State other than a Sense Data Hold state
The IDD executes the REQUEST SENSE command normally and sends the sense data which
indicate the UNIT ATTENTION condition and are being held to the INIT. At this time, the UNIT
ATTENTION condition for that INIT is cleared.
C141-C010
1.5 UNIT ATTENTION Condition
[=29-01]
[=29-02]
[=29-03]
[=29-05]
[=29-06]
[=2A-01]
[=2A-03]
[=2A-04]
[=2A-05]
[=2F-00]
[=5C-01]
[=5C-02]
[=3F-01]
[=3F-02]
[=3F-05]
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