Hello,
I don't understand what you want to do.
If you need value of 14° tile of your 1 line, you just need to do valueOfTile=mapcol[14], why are you usigned & for address of mapcol ?
If it is value of 14° tile of 2nd line, it's mapcol[14*256] if you have a short type for mapcol, and so on ...