startup

while true do
 sleep(0)
 if turtle.getItemCount(1) < 1 then
  rs.setOutput("top", true)
  sleep(0.1)
  rs.setOutput("top", false)
  while turtle.getItemCount(1) < 1 do sleep(0.1) end
 end
 turtle.select(1)
 turtle.place()
 for i = 2, 16 do
  if turtle.getItemCount(i) > 0 then
   turtle.select(i)
   turtle.dropDown()
  end
 end
end