Like the rest of the diagnostic cartridges surviving in Atari collections, this Diagnostic Test Cartrige runs a series of routines to verify the machine's memory, controls, and video, showing technical results on screen instead of any kind of entertainment. It wasn't meant to be sold or played, but to ease the work of technicians and factory staff. Its interest today is almost archaeological: it's part of the invisible infrastructure that supported the manufacturing and servicing of Atari consoles, more than part of the history of its games.
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