It was 1995, 15-inch 800x600 monitors were the norm, what kind of monitor did John Carmack use to code Quake?

While most developers in 1995 worked on standard 15-inch 800x600 monitors, John Carmack used a cutting-edge Intergraph InterView 28HD96 CRT monitor featuring 1920x1080 resolution—technology that wouldn't become mainstream for another 15 years. This $10,000 display gave Carmack unprecedented visual clarity for developing Quake, far surpassing typical consumer setups of the era.