Change Scsi Id; Change Wide Scsi Id - HP C2488A Technical Reference Manual

Change SCSI 10
Change SCSI 10
The CHANGE SCSI ID command instructs the Target to change its address to that supplied
in the SCSI ID field. The Target will accept the command at any time, but will not change
the ID until a SCSI bus reset is performed. This allows the Initiator to change the ID's of up
to seven targets without duplication.
If power is lost, the Target's SCSI ID source will revert to the address pinsets when power is
restored.
Rezero Unit Command DeScriptor Block (CDS)
Bit
Byte
7
I
6
I
5
I
4
I
3
I
2
J
1
1
0
00 Opcode= CIH
01 Logical Unit Number
I
Reserved
02-03 Reserved
04
Reserved
I
IDCF
I
SCSIID
05 Control Byte
IDCF (ID Control Field).
If IDCF
=
0: The SCSI ID field is ignored and the drive obtains its ID from the address
pinsets at the next bus reset.
If IDCF = 1:
The drive obtains its ID from the SCSI ID field in byte 4 at the next bus
reset.
SCSI ID. Provides the new SCSI address: MSB
=
bit 2; LSB
=
bit O.
DRAFT
Vendor Unique Command Descriptions B·7
1/18/93 09:58