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	Wed, 26 Aug 2015 06:20:55 -0700 (PDT)
Date:	Wed, 26 Aug 2015 16:20:52 +0300
From:	"Vladimir Zhbanov (vzhbanov AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] speed-dial type buttons (was: Antifork)
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Hi, DJ.

On Tue, Aug 25, 2015 at 03:49:36PM -0400, DJ Delorie wrote:
> 
> In both cases there's a many-to-one relationship; one schematic can be
> used for many purposes, and one pcb is made of many schematics.
> 
> So gschem would have to have many buttons, one for each purpose the
> schematic is used for, but pcb would only need one - to collect the
> things it needs.  PCB's File->Import does this; it knows how to use a
> list of schematic pages or call out to a Makefile to get what *it*
> needs.  A "getting started" button on gschem would need to assume that
> the one schematic is sufficient for one pcb, or figure out how to ask
> the user what other schematics are needed.  Also, not everyone starts
> a pcb with the import - I prefer to lay out the board's boundaries and
> physical size first, *then* import.
> 
> BOMs are trickier, because you need to know the set of schematics but
> you also need to know the build-out of the board, i.e. which
> configuration of parts is populated.  I typically use a script to
> generate a BOM from schematics on a per-pcb basis, using attributes
> from the schematic, but I can't see that working as a button in either
> gschem or pcb.  Also, if your sch->pcb tool modifies any of the parts,
> the BOM generator would need to know about that too.

One could use 1) hierarchy or 2) the (active-pages) variable in gschem,
though the latter case is more error prone.

Cheers,
  Vladimir

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