Mail Archives: geda-help/2020/12/08/10:34:17
On Tue, 8 Dec 2020, Klaus Rudolph (lts-rudolph AT gmx DOT de) [via geda-help AT delorie DOT com] wrote:
> It was in the docs in the past. But I only find a old pdf
> http://www-mdp.eng.cam.ac.uk/web/CD/engapps/geda/geda-doc/gschem/gschem.pdf.
>
> Is there somewhere an actual one available?
That's interesting; I didn't know about this document. There is a "gEDA
gschem User Guide" in the wiki, but it appears to be a completely
different text.
Does anyone know what has become of it?
> Currently the git.geda-project.org/geda-gaf is online again.
I pushed the updated `stable-1.10' branch there, as well.
> If I replace older refdes= to the "newer" portname= it works fine. But
> in which case I can/should use netname= attribute?
>
> I was not able to get an example working with using netname=
Components with a netname= attribute are considered power symbols, i.e.,
their only pin is connected to a named net. Typical examples for this
would be "netname=GND" or "netname=3.3V". The older way of doing this is
using a "net=3.3V:1" attribute, but this has the disadvantage that you
can't use that attribute as the visible text without having an ugly ":1"
suffix. With the netname= attribute, you can draw a single "power rail"
symbol and change the attribute value to whichever power rail you want it
to connect to. (In practice, you'll probably want to have a separate,
visually different symbol for GND.)
> P.S. If you like a can share my little example and we can add the
> netname= attribute to this example and make that public?
Sure!
Roland
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