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C141-E124-01EN3 - 16
3.1.4 CHANGE DEFINITION (40)
Bit
Byte
76543210
0 X‘40’
1 LUN 00000
20000000Save
3 0 SCSI Level
400000000
500000000
600000000
700000000
8 Parameter List Length
9000000FlagLink
This command changes the IDD's SCSI level and the operation mode.
The INIT can know the SCSI level and operation mode that the IDD is currently using by the
INQUIRY command (Standard Inquiry Data and VPD Information - Operation Mode Page: Page
code X 'C0').
If the "Save" bit of CDB byte 2 specifies "1," the IDD saves the SCSI level and operation mode
specified in this command in the Boot-ROM (Flash ROM) when the command is executed.
If this bit specifies "0," the changes are not saved.
This command specifies a different SCSI level in the "SCSI level" field in SCB byte 3. The SCSI
level is indicated by 1 byte of code as shown in the following table. If a code other than the
following codes is specified, the command is terminated by a CHECK CONDITION status
(ILLEGAL REQUEST [=5] / Invalid field in CDB [=24-00] and the SCSI level and operation
mode are not changed.
Operation Code (HEX) SCSI Level
X'00' Not Change
X'01' SCSI-1 (Same as CCS)
X'02' CCS (Same as SCSI-1)
X'03' SCSI-2
*1 X'04' SCSI-3
*1 Set at shipping time.