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Tom’s Hardware

Technology

Mark Tyson

Legendary Windows dev codes demos and games for ancient ‘War Games’ monitor — interfaces with the HP1345a vector display using an ESP32 microcontroller

HP Windows Dave W Plummer

HP1345a monitor demo using DIY interface.

There’s something extremely alluring about vector displays for tech enthusiasts beyond a certain age. Recently, legendary Windows developer Dave W Plummer got hold of a prime example of this type of monitor, the HP1345a, and set about making it usable with a PC via USB serial connection. Plummer has been busy, already showcasing a vector demo andan Asteroids clone on the HP monitor, best known for its starring role in the classic 1983 movie War Games.

I managed to get hold of an HP1345A, the vector display used to film the movie War Games. I've spent the last couple of days interfacing with it and coding for, it, and here's an early demo!Code at https://t.co/GmnnSpoNLj pic.twitter.com/L2PX5PbCn5February 2, 2026

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