Honored Contributor
Honored ContributorI don't find the conduits and blocks very useful either. I believe the purpose is to help keep a schematic "clean". But you can do that easy enough by tagging each symbol with a small connection line with a signal name. Any connection line segment with that signal name will be considered connected, so you don't have to draw lines all over the BDF to connect all of the desired nodes together. I prefer connecting all ports together though, that way it's easy to double click the connection line and see all of its sources / destinations.
There is one example design that gets installed with Quartus II that uses the conduits / symbols. Check out the filtref design in your installation directory: C:\altera\72sp1\qdesigns\fir_filter
