Seagate Ultra 160 Manuale Utente

138  

                                                      Parallel SCSI Interface Product Manual, Rev. A 

A Status byte shall be sent from the target to the initiator during the STATUS phase at the termination of each 
command as specified in Tables 63 and 64 unless the command is cleared by one of the following conditions:
1. an Abort message
2. a Bus Device Reset message
3. a hard reset condition
4. an unexpected Bus Free condition (see Section 3.1.1)
5. an ABORT TASK message
6. a CLEAR TASK SET message

[1] What was formerly called a “Command Queue” is now called a “Task Set.”
[2] Formerly “Command Terminated.”

A description of the status byte codes is given below.

Good. This status indicates that the Device Server has successfully completed the task.

Check Condition. This status indicates that an auto contingent allegiance or contingent allegiance condition 
has occurred (see Section 7.6.1). Optionally, autosense data may be delivered (see Section 7.6.4.2).

Condition Met. This status shall be returned whenever the requested operation specified by an unlinked
command is satisfied (see the PREFETCH commands in ANSI SCSI Block Commands-2, T10/1417D).

Reserved

STATUS BYTE CODE

Reserved

Good

Yes

Check Condition

Yes

Condition Met/Good

Yes

Busy

Yes

Intermediate/Good

No

Intermediate/Condition Met

No

Reservation Conflict

Yes

Obsolete [2]

Yes

Queue Full/Task Set Full [1]

Yes

ACA Active

Yes

Task Aborted

Yes

Reserved