240p is a progressive 320×240 (or similar) video mode used by most retro consoles from the NES through the early 3D era. It is technically 240 lines of progressive (non-interlaced) video. Modern displays often handle it poorly, so enthusiasts use CRTs or upscalers like RetroTink to display it correctly with scanlines.
240p
The native progressive resolution of most retro game consoles.
