IBM F80 Service Manual page 38

For SCSI devices, the location code is defined as follows:
AB-CD-EF-G,H
AB-CD-EF are the same as non-SCSI devices.
G defines the control unit address of the device. Values of 0 to 15 are valid.
H defines the logical unit address of the device. Values of 0 to 255 are valid.
A bus location code is also generated as 00-XXXXXXXX, where XXXXXXXX is
equivalent to the node's unit address.
Examples of physical location codes and AIX location codes are:
v PCI adapter in Slot 1
v Location code P1-I1
v AIX location code 20-58
20
Service Guide
| | | | |
| | | | Logical Unit address of the SCSI Device
| | | Control Unit Address of the SCSI Device
| | Connector ID
| devfunc Number, Adapter Number or Physical Location
Bus Type or PCI Parent Bus