The keyboard device gives low-level access to the Amiga keyboard.  When
you send this device the command to read one or more keystrokes from the
keyboard, for each keystroke (whether key-up or key-down) the keyboard
device creates a data structure called an input event to describe what
happened. The keyboard device also provides the ability to do operations
within the system reset processing (Ctrl-Amiga-Amiga).

 Keyboard Device Commands and Functions 
 Device Interface 
 Reading the Keyboard Matrix 
 Amiga Reset Handling 
 Reading Keyboard Events 
 Additional Information on the Keyboard Device