You can validate your puzzle solution with certitude.
The Atari 2600 Video Computer System was a video game console released in October 1977 by Atari, Inc. It is credited with popularizing the use of microprocessor-based hardware and cartridges containing game code, instead of having non-microprocessor dedicated hardware with all games built in.
The 2600 was typically bundled with two joystick controllers, a conjoined pair of paddle controllers, and a cartridge game—initially Combat and later Pac-Man.
The Atari 2600 was wildly successful, and during much of the 1980s, "Atari" was a synonym for this model in mainstream media and, by extension, for video games in general.
* A cheat code is something the video game designers often put into the game that would disclose a hidden feature when applied. These "Easter Eggs" as they were often referred to where often accessed by an intricate series of inputs by the player.