CC:InvCheck

emptySlot = 16
i = 1
while i <= 16  do
    item = turtle.getItemdetail(i)
    if item ~= nil then
        emptySlot = emptySlot - 1
    end
    if emptySlot == 0 then
        for 1, 16, 1 do
           itemCount = turtle.getItemCount(i)
           if itemCount == 64 and item == minecraft:cobblestone then
            turtle.drop(i)
            emptySlot = emptySlot + 1
           end
        end
    end
end