High Quality Content by WIKIPEDIA articles! The Television Interface Adaptor (TIA) is the custom computer chip that is the heart of the Atari 2600 game console, generating the screen display, sound effects, and reading input controllers. Its design was widely affected by an attempt to reduce the amount of RAM needed to operate the display. The resulting design is notoriously difficult to program, but at the same time offers flexibility well beyond the capabilities of contemporary designs. It remains a key reason that the 2600 maintains a strong homebrew following.