I have developed a custom Atari 2600 test cartridge to allow me to test the features of the Wolf adapter. It makes possible to test a keyboard and a Joystick with booster grip at the same time.

It will read the state of DIFFICULTY switches being A for joystick and B for keyboard and enter one of the following modes:

Left: Joystick, Right: Joystick

Left: Joystick, Right: Keyboard

Left: Keyboard, Right: Joystick

Left: Keyboard, Right: Keyboard

It can test joysticks with omega booster. The button state is show using 2 methods: - The score counter shows the logic state of the TIA inputs (1/0) in the following order:

- The second method is graphical and consider the fire button active low while the thumb and trigger buttons are active high.

The keyboard is straightforward.