how to automate device family change in megacores?

Hi nemo:

I know from past experience moving between family's, typically you are not required to modify the mega-cores from one family to another, however, the block utilizations may not be as efficient in the different families: (IE the DSP (Multiplier) blocks are different between Cyclone Families and Stratix Families, so it may not produced the most efficient logic in the move for that particular family).

Unless someone else says it's absolutely necessary, I would just target the new family and compile the design, and see where you stand. If you aren't meeting timing, and or run out of LE's, then start looking at converting the mega-functions, but otherwise leave them be.

The one limit to this, is if you have to switch versions of Quartus to access the new family. The old core may not know about the new family of device, and will through an error until you re-generate it.

Pete