Table 9

+=============-===============================================================+ 
|    Value    |  Message format                                               | 
|-------------+---------------------------------------------------------------| 
|     00h     |  One-byte message (COMMAND COMPLETE)                          | 
|     01h     |  Extended messages                                            | 
|  02h - 1Fh  |  One-byte messages                                            | 
|  20h - 2Fh  |  Two-byte messages                                            | 
|  30h - 7Fh  |  Reserved                                                     | 
|  80h - FFh  |  One-byte message (IDENTIFY)                                  | 
+=============================================================================+