                     break;
 
                     case '?':
+                    C64Serial.print(Modem_EchoOn);
                     //C64PrintIntln(EEPROM.read(ADDR_MODEM_ECHO));
                     break;
+
+                    default:
+                    errors++;
                 }
                 break;
                 

                    case '1':
                    Modem_QuietMode = true;
                    break;
                }
                break;


boolean Modem_isCommandMode = true;
boolean Modem_isConnected = false;
boolean Modem_isRinging = false;
boolean Modem_EchoOn = true;
//boolean Modem_EchoOn = true;
boolean Modem_VerboseResponses = true;
boolean Modem_QuietMode = false;
