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1.) I'm assuming that connecting a wire to a bus requires the user to give the wire the same name as the bus, but append a single integer to the name instead of [N..M]. Doing this requires a lot of clicking, and it seems like there should be a shortcut for naming wires like this. Is there?
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From what I know, there is not such a shortcut.
Quartus relies more on wire naming than on actual graphical connections, especially when merging buses and wires.
Quartus schematic editor is not very smart. I have used better editors in the past. I think this is because Altera focused Quartus for HDL use and the schematic editor is only for connecting main system blocks or for very very simple designs. If you need to make a lot of wiring you'd better use a real CAD.
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2.) Lots of times I like to make a schematic where a bus segment branches into many wires, and is left unterminated. That way, I have a nice visual reminder of which nodes are bundled into a bus, and that there should be more similar bus segments somewhere else in the schematic. Quartus seems to complain about unterminated bus segments with a little X on the ends. Must I terminate busses in Quartus, or is there a way to get rid of those, or can I just ignore them?
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Don't mind the little X on the ends of segments. They are always there if the wire/bus is not graphically connected to anything, even if those signals are actually connected somewhere else in the schematic.
Quartus doesn't complain about anything when you draw the wires; however, in the processing phase, it will complain if the unterminated input wires are actually undriven signals.
Regards
Honored Contributor
