Fujitsu MAT3300FC 用户手册

 

2-22 

C141-C008 

1)  If, during execution of a command received from an INIT, the IDD 

terminates execution of the command.  If the command is still in the queue 
and has not yet been executed, the IDD clears that command. 

2)  The IDD reports the CHECK CONDITION status with for the command that 

caused the overlap. The sense data generated by the IDD at this time shows 
ABORTED COMMAND [= B]/Overlapped commands attempted [= 4E-00]. 

 

 

1)  The INIT is permitted to sent an ABTS, ABORT TASK SET, 

CLEAR TASK SET or TARGET RESET command, specifying 
the logical unit in order to terminate processing of a command 
that is currently disconnecting. (Shown in item 2.7.6.) 

2)  Overlapped command specifications are applicable without 

dependence on the type of command that was issued second. 
For example, even if the command that was issued second is an 
INQUIRY or REQUEST SENSE command, the IDD reports 
the CHECK CONDITION status and terminates both 
commands abnormally. 

The IDD supports only the logical unit number (LUN) LUN = 0.  If a LUN other 
than this is specified, the IDD operates in one of the following ways, depending 
on the type of command that is issued at that time. 

1)  For an INQUIRY command, even if an invalid LUN is specified, the 

command is executed normally. However, byte 0 of the “Standard INQUIRY 
Data” transferred to the INIT by that command (the “Qualifier” field and the 
“Device Type Code” field) shows X‘7F’. 

2)  If an invalid LUN is specified for any command other than the INQUIRY 

command or the REQUEST SENSE command, that command is executed 
normally. 

Group 7 command operation codes (X‘E0’ ~ X‘FF’) are reserved by Fujitsu. 
When any command which has these operation codes is issued, the IDD may not 
necessarily respond with the CHECK CONDITION status (ILLEGAL REQUEST 
[= 5] Invalid command operation code [= 20-00]). 

The INIT must not issue commands which have these operation codes.