I've been working with my Zybo-Z7-20 board for about 6 weeks now and have been having a hard time with anything having to do with the DDR. If I built and run the OOB demo using Vivado 2016.4 It ran, sort of. I would sometimes get could not write to memory 0x0010000 errors when trying to load a new change into the memory. When I tried to run the demo in Vivado 2018.2, it would give the same message, but none of my breakpoints would get hit and the program in flash would only run. If I set the lin