ui.js

    function keyEvent(key) {
    	if(keyInterrupts) {
    		cpu.interrupt();
    	}
    };
    
    $(document).keydown(function(e) {
    	if(cpu.running && e.target.nodeName !== 'INPUT' && e.target.nodeName !== 'TEXTAREA') {
    		var key = keyMap[e.which] || e.which;
    		keysDown[key] = true;
    		keyEvent(key);
    		e.stopPropagation();
    	}
    });
    
    $(document).keyup(function(e) {
    	if(cpu.running && e.target.nodeName !== 'INPUT' && e.target.nodeName !== 'TEXTAREA') {
    		var key = keyMap[e.which] || e.which;
    		keysDown[key] = false;
    		keyEvent(key);
    		e.stopPropagation();
    	}
    });
    
    $(document).keypress(function(e) {
    	if(cpu.running && e.target.nodeName !== 'INPUT' && e.target.nodeName !== 'TEXTAREA') {
    		var key = keyMap[e.which] || e.which;
    		if(key <= 0x7f) {
    			keyboardBuffer.push(key);
    		}
	    	keyEvent(key);
	    	e.stopPropagation();
    	}
    });