code: function() {
  		if ( this.interval ) {
  			// once is enough
  			return;
  		}
  
  		var self = this;
  		this.interval = setInterval( function() {
  			if ( !self.paused) {
  				self.runFrame();
  			}
  		}, 1000 / 60 );
  
  		this.output.video.run();
  
  		this.running = true;
  		this.paused = false;
  	}
docs: Turn on and run emulator.