Jim Battle wrote:
> Finally, I noticed that some parts don't have the implicit power and > ground nets defined in the symbol, thus if the chip is used, these nets > must be added on each instance. > We talked about that maybe a year ago or so. IIRC the final consensus was that with design being more and more mixed voltage, it would be better to leave the VCC and GND out of the part definition, and let the users add whatever is required. One of my design right now has both 5V and 3.3V, with half the logic using one supply and the other half using the other supply. So I have to make sure the parts have the right power connections. You can't do that if the part definition is glued to Vcc. Chris.
