DMA on a DE0

Yes, I saw the 'small' variant, but it doesn't do any DMA testing. I was trying to keep to the supplied code (to reduce the number of things I could have done wrong :) )

The code I'm using does do a non-DMA test, which works fine. It's only when it starts the DMA test that the board hangs. I was also using offsets from top/bottom of RAM to allow the stack/heap to have space to work in. I did try using a small section in the middle of RAM as well (0xA00000 -> 0xB00000), and had the same problem.

The goal is to have DMA sending video from SDRAM to a VGA core, and I want to try and get it working with a presumably "known good" solution before adding in my VGA core...

I did look at the university program stuff, because it sets up a PLL for the SDRAM and the CPU, but it's all wrapped up inside a custom component, so I don't think I can get at how they've configured it, to check if my -3ns is the correct phase offset. Perhaps I'll just try various offsets and see if it helps...

Cheers

Simon