C64Lib.Core.IEC.listen C# (CSharp) Method

        byte listen(int device)
        {
            if ((device >= 8) && (device <= 11))
            {
                if ((listener = drive[device - 8]) != null && listener.Ready)
                {
                    listener_active = true;
                    return (byte)C64StatusCode.ST_OK;
                }
            }

            listener_active = false;
            return (byte)C64StatusCode.ST_NOTPRESENT;
        }