Re: gEDA-user: nets in symbols

[Seb James <seb@xxxxxxxxxxxx>]

On Tue, 2007-03-06 at 08:06 -0700, Marc Moreau wrote:
> > Ah, no, that's not it quite yet...
> >
> > I called my slotted parts U3501io and the power part U3501pwr.
> >
> > That means I have 4 U3501io symbols in my schematic and 1 U3501pwr.
> >
> > On the pcb layout, I get 2 footprints - one for U3501pwr and one for
> > U3501io...
> >
> > I tried a step further, and called the io symbols:
> >
> > U3501ioone
> > U3501iotwo
> > U3501iothree
> > U3501iofour
> >
> > And then I get 5 footprints on the diagram...
> 
> Only put one footprint per refses, don't need one per symbol.
> Try putting all the one-time information in the pwr symbol, that way it will always be there, and if you don't need one or more of the io's all the footprint/copyright/documentation/foo attributes are still available.  The only attributes needed for io's is 'slot'.
> 
> Perhaps I should add a wiki article at www.geda.seul/wiki

I volunteer to proof-read such an article.

Things still don't quite work right here. If I call all the symbols
U3501 then I see the correct number of components on my pcb layout, even
though the design doesn't validate with gnetlist.

If I name the symbols U3501io and U3501pwr, then I get two components on
my layout instead of one, but the design validates through gnetlist.

It looks like the pcb program doesn't think U3501io is the same as
U3501pwr - it thinks they are two different components. Except that when
pcb reads in the netlist, it correctly understands that U3501pwr ==
U3501io == U3501..

Seb



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