I would like to use Control Register controlled pins of LPT (1, 14, 16, 17) as inputs. These are said to be normally used as open collector outputs, but have the ability to operate as inputs too. This site describes the use of this pins as inputs, but I'm a bit confused and don't really understand what I'm supposed to do.
Here's what the circuit looks so far. This fails for Control Register pins, but works for Status Register pins (10, 11, 12, 15). How do I need to change my schematic to make it work for with the other ones?