The CX22 is a digital trakball controller which can be substituted for the joystick on several games. The CX22 is compatible with any Atari computer console or VCSTM (except the CX5200TM),

There are two types of CX22 Trakballs:

1. A single mode trakball which is a joystick emulator (only 15K produced).
2. A dual mode trakball which has a mode select switch for both joystick emulation and true trakball operation.

The single mode and dual mode units are externally the same except for the mode select switch at the left of the Outer Case on the dual mode.

The CX22 is composed of an outer case which houses the main PC Board, two firebutton PC boards, two roller shaft assemblies, one idler shaft assembly and a cue ball. Refer to Figure 1-1 as reference for the following discussion of trakball parts.