On Tue, 2009-11-17 at 17:19 -0700, John Doty wrote: > Another problem is that it doesn't play well with hierarchy. Suppose > you need a bunch of the same circuit, but one of the building blocks > comes in pairs, and another comes in duals. That forces you to draw > six of the circuit per block. And then maybe you need nine of them. > At that point, hierarchy isn't worth it. But nine identical (from a > signal flow point of view) circuits *should* be the kind of thing you > do with hierarchy.
That is of course, a distinction between the logical hierarchy, and the physical hierarchy. I'm not 100% convinced either way. I would find it very surprising to see a product schematic containing a hierarchy block, to find that when embodied, that hierarchy is violated. You would probably want separate _physical_ schematic produced, with some / all of the hierarchy flattened out, _as implemented_. _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user