Multi Button
------------

The Ultimate-64 has one button on the side of the board, which is placed
on the original position of the power button.

This button is called the MultiButton, because it handles several
functions.

+----------------------+-----------------------------------+
| Function             | Description                       |
+======================+===================================+
| Power on             | When the machine is off, press    |
|                      | the button briefly to switch it   |
|                      | on                                |
+----------------------+-----------------------------------+
| Power off            | Press the button for 4 seconds to |
|                      | switch off the machine.           |
+----------------------+-----------------------------------+
| Reset                | Press the button for about 1      |
|                      | second to reset the machine.      |
+----------------------+-----------------------------------+
| Menu                 | Press the button briefly to enter |
|                      | the File Selection (Ultimate)     |
|                      | menu.                             |
+----------------------+-----------------------------------+
| Freeze               | Hold the button and briefly tap   |
|                      | on the RESTORE key to get into the|
|                      | freeze function of the selected   |
|                      | utility cartridge.                |
+----------------------+-----------------------------------+
| Config Reset         | With the machine switched off,    |
|                      | press the RESTORE key and keep it |
|                      | pressed. Then turn the U64 on by  |
|                      | briefly pressing the button.      |
+----------------------+-----------------------------------+