gEDA-dev: idea for power pins

[DJ Delorie <dj-at-NOSPAMdelorie_dot_com>]

I've seen this elsewhere, how feasible would it be to add such a thing
to gschem/gnetlist?

Somewhere on the schematic, include a table.  This table has three
colums:  refdes, pin, netname.

The table would have to be a real object, not just decorated text.  It
would have to retain the relationships between the contents, so that
gnetlist can use it to attach the listed pins.

"Pin" could be either a pin number or a symbolic name, so that you
could list "VDD" regardless of which physical pin that's on (i.e. if
you switch from dip-14 to qfn-16, no need to update the table).

I suppose "pin" could be a comma-separated list, too, for chips with
multiple power pins.  "refdes" could be a list too, for identical
chips (or at least chips with identical power pinouts).

Alternately, the table could remap "net=" assignments within the
symbol.  So a row "U4; VDD; +5v" would map the Vdd pins to the +5v
net.

When you edit the table, it brings up a dialog that looks like
gattrib, so it's easy to edit.


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