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It seems that another definition is needed.

CDB
     * is NOT just the 1-byte opcode
     * IS a 6 to 12-byte 'packet' of data that contains
          a) the opcode for a SCSI/ATAPI command
          b) command-specific parameters
          * INCLUDING a non-zero 'allocation length'
             if any data is to be transferred
              (units = bytes or number of blocks (of 'current logical
blocksize')

Judging from the way the term CDB is used, we have
* one set of people treating it as if it were merely a command opcode
* one set of people with the 'correct' definition

Please make sure you know which definition YOU are using !!!

- Jim Hatfield
   Overland Data, Inc.




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