Mail Archives: geda-user/2016/09/19/18:20:04
Thanks, John. Just flipping the PINSEQs in the sym files seems to work
fine, FYI. Very powerful.
John
BTW, your answer should be in the documentation ... someday. I spent a
couple of hours finding why a circuit didn't work as expected using
the default library. At least your answer will show up for anyone
antagonizing the Google.
John Doty writes:
>
> On Sep 19, 2016, at 3:00 AM, John Conover <conover AT rahul DOT net> wrote:
>
> >
> > Unless I am mistaken, the PINSEQ is reversed in many of the library
> > diodes.
> >
> > Spice requires the anode node followed by the cathode node, as
> > determined by the PINSEQs, (these, I think, are reversed in many of
> > the diodes in the library.)
>
> The library symbols are starting points, developed for a variety of purposes by a variety of people. Some had no idea what the SPICE back ends need. In general, you need to make copies and tweak the symbols for *your* project.
>
> The gnetlist back end at https://github.com/noqsi/gnet-spice-noqsi gives you much more control of SPICE netlisting than the “spice” and “spice-sdb” back ends. You can use the standard library symbols (with an attached attribute) with this back end.
>
> John Doty Noqsi Aerospace, Ltd.
> http://www.noqsi.com/
> jpd AT noqsi DOT com
>
>
--
John Conover, conover AT rahul DOT net, http://www.johncon.com/
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