Also possibly of interest is CLK aka Clock Signal, an emulator that outputs a composite "signal" instead of pixels: > Consider an ordinary, unmodified Commodor

Also possibly of interest is CLK aka Clock Signal, an emulator that outputs a composite "signal" instead of pixels: > Consider an ordinary, unmodified Commodore Vic-20. Its only video output is composite. Therefore the emulated machine's only video output is composite. In order to display the video output, your GPU must decode composite video. Therefore composite video artefacts are present and correct not because of a post hoc filter but because the real signal is really being processed. https://github.com/TomHarte/CLK https://github.com/TomHarte/CLK