Nick Bild has built a handheld Atari 2600 that runs on real Atari silicon. Writing at Hackster.io, Bild describes the µTari Go as a portable version of his earlier µTari project, which shrank the Atari 2600 motherboard from about 9.75 x 5.25 inches to 4.7 x 3.5 inches. It uses the original 6507 processor, TIA, and RIOT chips. No emulation, no FPGA.

The µTari board drops the RF modulator in favor of composite video from a transistor and two resistors, and swaps the large switches and controller ports for pin headers. Inside the handheld, the composite signal goes to a 4-inch flat CRT without digital conversion. Seven pushbuttons handle the D-pad and console controls, and a Sullins EBC12DRTH edge connector takes authentic cartridges.

Audio runs through a PAM8302 amplifier into an 8-ohm speaker behind a rear grille. Power comes in at 12V through a 2.1mm jack, which feeds the CRT directly, while a Pololu D45V5F9 regulator supplies 9V to the µTari board.…