CHIP_NONE
idev->keycodemax = (device_chip[APANEL_DEV_CDBTN] != CHIP_NONE) ? 12 : 4;
if (device_chip[APANEL_DEV_LED] != CHIP_NONE) {
if (device_chip[APANEL_DEV_LED] != CHIP_NONE)
else if (device_chip[devno] != CHIP_NONE)