JoeDalton said:The HD44780 driver only supports 8-bit wiring.
The correct wiring schema for your display can be found here
Use the schema on the top.
If your display has a separate line for backlight control, connect that to pin 17 of the parallel port connector.
If you already connected it to pin 14, use the alternative light mode in the advanced setup.
Good luck,
Joe
Many thanks