All sound advise. Much of this is covered by Jan Grey's great blog [1]. However I'm disappointed seeing the ancient Cyclone IV compared to a the current seven

All sound advise. Much of this is covered by Jan Grey's great blog [1]. However I'm disappointed seeing the ancient Cyclone IV compared to a the current seven series. A fairer comparison would refer to Cyclone V, which uses the ALM, kind of a LUT6+ (that is, can sometimes even be a LUT7 or 8). This has an important impact on the optimization considered. [1] http://fpgacpu.org http://fpgacpu.org