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I have looked at the code sent from the keypad to the computer for all of the buttons on the keypad. I have set the keypad into various modes and set it at various selections within the menus. Each key sends the same code no matter the setting of the keypad. That is, the starting point. The computer interprets the key presses depending on what sequence it sees. And the computer interprets the meaning of the code sent depending on previous key presses. (or sequences of presses)
The code has nine bits. It always starts with a high (1) and ends with
a high (1) when the key is pressed and a low (0) when the key is released. Every
press sends a code and every release sends the same code but for the final bit.
Here are the codes. Only the code sent on the presses is given, for release
code change the final 1 to 0.
| North | 110001101 |
| South | 100110101 |
| East | 101011101 |
| West | 100010101 |
| Enter | 101001111 |
| Mode | 101011001 |
| GOTO | 100111001 |
| Next | 111011101 |
| Prev | 110001011 |
| Guide (0) | 100010011 |
| Center (1) | 101110011 |
| Map (2) | 110110011 |
| CNGC (3) | 100110011 |
| Find (4) | 111010011 |
| Focus (5) | 101010011 |
| Star (6) | 110010011 |
| Slew (7) | 111110011 |
| Ret (8) | 111100011 |
| M (9) | 101100011 |