The Small Computer System Interface (SCSI) hardware of the A3000 and
A2091/A590 is controlled by the SCSI device.  The SCSI device allows
an application to send Exec I/O commands and SCSI commands to
a SCSI peripheral.  Common SCSI peripherals include hard drives, streaming
tape units and CD-ROM drives.

 scsi device commands and functions 
 device interface 
 scsi-direct 
 rigiddiskblock - fields and implementation 
 amiga bootstrap 
 scsi-direct example 
 additional information on the scsi device