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)                                  |
+=============================================================================+