Arrows: d-pad · X / Z: A / B · Enter / Right Shift: START / SELECT · P: pause · hold Tab: fast forward · F2: reset · F7: piezo / bare pin sound · F9: stats · F1: help

Programs load from a file on this computer, from a URL, or with ?rom=name.bin from the folder the emulator is in (?rom=https://… works for any address that allows it). A games.json beside the page — a list of file names — fills the Games menu.