v For pluggable PCI adapters/cards, CD is the device’s devfunc number (PCI devicenumber times 8, plus the function number). The C and D are characters in the rangeof 0-9, and A-F (hex numbers). Location codes therefore uniquely identify multipleadapters on individual PCI cards.v For pluggable ISA adapters, CD is equal to the order of the ISA cardsdefined/configured either by SMIT or the ISA Adapter Configuration Service Aid.v For an integrated ISA adapters, CD is equal to a unique code identifying the ISAadapter. In most cases, this code is equal to the adapter’s physical location code. Incases where a physical location code is not available, CD will be FF.EF is the connector ID. It is used to identify the adapter’s connector to which a resourceis attached.GH is used to identify a port, device, or FRU. For example:v For async, devices GH defines the port on the fanout box. The values re 00 a to 15.v For a diskette drive, H identifies either diskette drive 1 or 2. G is always 0.v For all other devices, GH is equal to 00.For an integrated adapter, EF-GH is the same as the definition for a pluggable adapter.For example, the location code for a diskette drive is 01-D1-00-00. A second diskettedrive is 01-D1-00-01.SCSI Devices/DrivesFor SCSI devices, the location code is defined as follows:AB-CD-EF-G,H| | | | || | | | Logical Unit address of the SCSI Device| | | Control Unit Address of the SCSI Device| | Connector ID| devfunc Number, Adapter Number or Physical LocationBus Type or PCI Parent BusWhere 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 isequivalent to the node’s unit address.Examples of physical location codes displayed by AIX are as follows:v First processor card plugged into planar 1:P1-C1Chapter 1. Reference Information 13
