Gates:
Finally we get somewhere. I know they are analog pins. I am going to treat them kindly. I did however ask if they are reserved for other function or devices. I have seen pins like this left to float for debugging hardware/software issues. My concern is are they free to use, or involved in other devices not spoken about in the past.
ADC6 and ADC7 are not reserved for any other purpose, they are exactly like the other analog pins, except that they are only analog inputs (cannot also be used as digital pins) and they are only available with the 32-pin packages.