Editing Atari interface (section)

===KoalaPad===
The KoalaPad is a 4¼"×4¼" resistive [[graphics tablet]] with a stylus, but can also be activated with a finger. It produces input like a paddle, with the X and Y axes mapped to X and Y potentiometers and left and right buttons mapped to left and right paddle buttons. When the stylus is not pressing against the surface then the potentiometer reading is at maximum.
The valid pot interval is than 0..255, which is even that smaller than the screen resolution.

There were different versions for Atari 8-bit and Commodore 8-bit, each package containing a cartridge containing the painting program Koala Painter. It was also available for many other computer platforms with other interfaces.