On Tue, Nov 4, 2008 at 7:42 PM, Joerg <[EMAIL PROTECTED]> wrote: > Sorry for asking a lot here lately but I believe others will hit this > snag as well and I could not find much info about it, not even via a web > search outside geda.seul.org: > > Often power pins must be made visible. For example if you have to filter > the supply for digital parts or opamps separately for each instance. Or > if you use a 74HC14 at 5V and another 74HC14 on the same schematic at 3.3V. > > Those power pins show up on every single slot. Looks quite ghastly on a > schematic. So the LM358 dual-opamp was to be my first part made with > gEDA. I tried this: > > Slotdef=2: 5,6,7 > Slotdef=1: 3,2,8,4,1 > > That butchered it. Connected both outputs to pin 1 and assigned pin 7 to > the supply (which should have been the 2nd output). Somehow I'd have to > have power pins on slot 1 but none on all the others. > > Is there a somewhat orthodox way to do this? A method where renumbering > at a later point doesn't break refdeses? >
I don't know about renumbering, but the standard way to handle this is to use two different symbols with the same refdes. You could use one symbol for each slot in a dual part, with one having power pins included. Or as I do, have a two-pin symbol for the power pins, then two instantiations of the LM358 op-amp symbol for the two op-amps. As long as all three have the same reference designator, the netlister will do the right thing. Regards, Mark [EMAIL PROTECTED] -- Mark Rages, Engineer Midwest Telecine LLC [EMAIL PROTECTED] _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user