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Inside Macintosh: Devices /
Chapter 4 - SCSI Manager 4.3 / SCSI Manager 4.3 Reference
Data Structures

Device Identification Record

You use the device identification record to specify a target device by its bus, SCSI ID, and logical unit number (LUN). The device identification record is defined by the DeviceIdent data type.

struct DeviceIdent
   UInt8    diReserved;
   UInt8    bus;
   UInt8    targetID;
   UInt8    LUN;
typedef struct DeviceIdent DeviceIdent;
Field Description
The bus number of the SIM/HBA for the target device.
The SCSI ID number of the target device.
The target LUN, or 0 if the device does not support logical units.

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© Apple Computer, Inc.
3 JUL 1996