Eventhough I instantiate CoreGen generated cores in my top level HDL code (or schematic), When I looked at the post-synthesis RTL level design schematic in ECS, I see that input and out data ports are not connected.
I have found the same problem on my design and in particular on the bus signals. No problem, it is only a graphical error but the design , and then the synthesis, is ok!
unfortunately it isn't the only problem and I think that it is the minus important.
More severe are problems during the mapping ( inconsistency of the design).
the use of the hierarchical design flow is very unstable and the result is unforeseeable.
I'm very very dissatisfied.