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Subject:	Re: [geda-user] A lesson from gnet-makefile
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From:	John Doty <jpd AT noqsi DOT com>
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Date:	Tue, 13 Oct 2015 10:23:24 -0600
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On Oct 12, 2015, at 9:56 PM, Evan Foss (evanfoss AT gmail DOT com) [via =
geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:

>> Translation to the various layout and simulation tools is then a job =
for gnetlist or xorn. Pcb, having no mechanism to do anything with this =
data, isn't terribly relevant at present.
>=20
> Well there needs to be something that works like s_conn and it's
> partners in gnetlist that walks the list mapping the nets but with
> this added metadata.

Walking lists is easy in Lisp: gnet-makefile.scm has functions like:

(define (names-on-net net pintype)

	(sort
		(apply append
			(map
				get-files
				(packages-with-pintype net pintype)
			)
		)
		string<
	)
)

Which collects all of the filenames mentioned in file=3D and source=3D =
attributes on symbols attached to a net via pins with a given pintype.

This is, incidentally, an experiment with a different code formatting =
style from my usual. A lot more lines and tabs. Does that help?

>=20
>> What we need is knowledge of layout programs that *can* handle this =
sort of extra data. Without tools to export to, what good is it? Finding =
out this information seems difficult.
>=20
> Good points although I would be happy to just have notations in pcb in
> the short term.

I=92m skeptical that that will ever happen. How many years have buried =
vias been on the table? Pcb issues have weirdly taken over this thread, =
which is not about pcb at all.

John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd AT noqsi DOT com



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