| The Testcart is a cartridge that allows you to test Atari 2600 consoles and controllers. When you power up a 2600 with this cartridge inserted, it first displays a test pattern and plays some music to verify that the sound and video are working. It then switches to a screen where the controller switches, joysticks, keyboard controllers and paddles may all be tested.
The Testcart may be purchased in cartridge form complete with manual from the AtariAge Store. | 
Box Scan
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