Table 148

+=====-========-========-========-========-========-========-========-========+
|  Bit|   7    |   6    |   5    |   4    |   3    |   2    |   1    |   0    |
|Byte |        |        |        |        |        |        |        |        |
|=====+=======================================================================|
| 0   |                           Operation code (41h)                        |
|-----+-----------------------------------------------------------------------|
| 1   | Logical unit number      |     Reserved    | PBdata | LBdata | RelAdr |
|-----+-----------------------------------------------------------------------|
| 2   | (MSB)                                                                 |
|-----+---                                                                 ---|
| 3   |                                                                       |
|-----+---                        Logical block address                    ---|
| 4   |                                                                       |
|-----+---                                                                 ---|
| 5   |                                                                 (LSB) |
|-----+-----------------------------------------------------------------------|
| 6   |                           Reserved                                    |
|-----+-----------------------------------------------------------------------|
| 7   | (MSB)                                                                 |
|-----+---                        Number of blocks                            |
| 8   |                                                                 (LSB) |
|-----+-----------------------------------------------------------------------|
| 9   |                           Control                                     |
+=============================================================================+