IBM RS6000 Service Guide - Page 128
devfunc Number, Adapter Number or Physical Location
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EF is the connector ID. It is used to identify the adapter's connector that a resource is attached to. GH is used to identify a port, device, or FRU. For example: For async devices GH defines the port on the fanout box. The values are 00 to 15. For a diskette drive H defines which diskette drive 1 or 2. G is always 0. For all other devices GH is equal to 00. For 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 diskette drive is 01-D1-00-01. For SCSI the location code is defined as: 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 Location Bus Type or PCI Parent Bus Where 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. There is also a bus location code that is generated as '00-XXXXXXXX' where XXXXXXXX is equivalant to the node's unit address. Examples of physical location codes displayed by AIX are: Processor Card in slot 1 of planar 1 P1-C1 Memory module in system planar slot 2 P1-M2 Memory module 12 in card in slot 2 of system planar U1-P1-M2.12 3-56 Service Guide