Table 40

+=====-========-========-========-========-========-========-========-========+  
|  Bit|   7    |   6    |   5    |   4    |   3    |   2    |   1    |   0    | 
|Byte |        |        |        |        |        |        |        |        | 
|=====+==========================+========+========+==========================| 
| 0   | Source address           |   DC   |  Cat   | Source LUN               | 
|-----+--------------------------+-----------------+--------------------------| 
| 1   | Destination address      |   Reserved      | Destination LUN          | 
|-----+-----------------------------------------------------------------------| 
| 2   |                              Reserved                                 | 
|-----+-----------------------------------------------------------------------| 
| 3   |                              Reserved                                 | 
|-----+-----------------------------------------------------------------------| 
| 4   | (MSB)                                                                 | 
|-----+---                        Source block length                      ---| 
| 5   |                                                                 (LSB) | 
|-----+-----------------------------------------------------------------------| 
| 6   | (MSB)                                                                 | 
|-----+---                        Destination block length                 ---| 
| 7   |                                                                 (LSB) | 
|-----+-----------------------------------------------------------------------| 
| 8   | (MSB)                                                                 | 
|- - -+---                        Number of blocks                         ---| 
| 11  |                                                                 (LSB) | 
+=============================================================================+