That's the problem I think. He's changed from a shared pixel memory in the reference design to a non shared one in his HW accelerated design. That's the impress

That's the problem I think. He's changed from a shared pixel memory in the reference design to a non shared one in his HW accelerated design. That's the impression I get from the diagrams. It's somewhat moving the goal posts IMO. Guess it's ok since it's a student project.