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Date:	Sun, 20 Sep 2020 19:06:07 +0200
From:	"Gabriel Paubert (paubert AT iram DOT es) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To:	"N (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Subject:	Re: [geda-user] lepton-netlist add attribute for net
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On Sun, Sep 20, 2020 at 02:47:50PM +0200, N
(nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com] wrote:
> > On Wed, Sep 16, 2020 at 07:54:16PM +0200, N
> > (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com] wrote:
> > > Anybody here know if it's possible to add attribute for nets so
> > > they end up in netlist?
> > 
> > A bit like what I did here?
> > 
> > http://www.delorie.com/archives/browse.cgi?p=geda-user/2015/10/14/04:07:24
> 
> Yes.
> 
> > You need symbols with pins connected to the net(s) for which you
> > want to set attributes.
> 
> But ideally it should be added just as a netnamne attribute. Got the
> attached file from Vladimir on this mailing list two days ago and
> should start to take a look at howto extract attributes so they could
> be included in netlist by backend right now.

Maybe for single nets, but I found it quite nice for differential pairs:
the symbol connecting the two nets was a visible indication of which
nets formed the differential pairs.

The person who did the layout with CadStar asked me to add a "bus_name"
attribute to each net of a differential pair (it's the way CadStar works
apparently). Since the attribute was taken from the symbol, I was sure
that two nets had the same bus_name attribute (it had to be different
for each differential pair, but that's easy to check with simple scripts). 

	Gabriel


 

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