Bob Paddock <[EMAIL PROTECTED]> wrote: > Yes. The power pins should also be visible on all parts. Think field service > while your hunched over in a four foot high dark wet coal mine shaft > debugging equipment, because the fiber optic cable looked to much like > wire-rope to the coal miners (they where both gray).
It seems to me that net= attribute values should be visible and editable for cases like this. I don't think a pin is necessarily the best way to convey this information: power/return net diagrams tend to be unilluminating clutter. In my designs it is often necessary to have different supplies to similar parts. In mixed signal circuits, one often needs to segregate supplies and grounds for noise reasons. Power conservation may dictate that idle subsystems be switched off. Keeping radiation induced latchup from frying a part may require current limiters or circuit breakers, which in turn may require dividing circuitry into sections whose normal current draws are safe. The days of boards with lots of 74XX parts on a common power supply are pretty much over. The main applications for MSI are now as glue for specialized interfaces, and these often require special power arrangements. John Doty "You can't confuse me, that's my job." MIT-related mail: [EMAIL PROTECTED] Other mail: [EMAIL PROTECTED]
