I have an issue with the parallel port provided in the slides, it's probably something stupid but i already lost far too much time with that. I can only make it work in one direction, I can read with the Avalon bus but not write.
If you look on the simulation, it seems to me that all the necessary signals are properly setup but for some reason ParPort doesn't take the iRegPort value.
Thanks for your help,
Regards,
Sylvain