Re: gEDA-user: gschem, attributes of in/out/power symbols

[Steve Meier <smeier@xxxxxxxxxxxxxxxxxxx>]

Think about what it is saying.

Fo a complex object which in this case there is one pin.

At the complex object level have a symbol level attribute named net and
set the value of that net to say 5V_Pos

net=5V_Pos  being that there is only one pin we could assume that that
net applies to the one pin. But this is risky, or at least not
universal. Since a complex object can have more then one pin.

I think if a net attribute is going to be attached at the symbol level,
and there are good reasons for doing so you should explicitly state what
pin or pins that net belongs to.

If you don't want to add the pin to the attribute then the attribute
should be attached to the pin object and not the complex object.

Steve Meier




On Tue, 2007-11-27 at 18:38 +0000, Peter Clifton wrote:
> On Tue, 2007-11-27 at 19:32 +0100, Stefan Salewski wrote:
> > Found an undocumented feature of gschem:
> > 
> > http://archives.seul.org/geda/dev/Mar-2004/msg00015.html
> > 
> > With this patch we can write
> > 
> > net=name
> > instead of
> > net=name:1
> > 
> > and do not get the visible ugly, confusing :1
> > 
> > This makes handling of variable Input/Output/Power pins easier.
> > 
> > Will test and modify my symbols.
> 
> I don't think that patch was ever applied, so it won't work.
> (This is based on a quick skim of the gnetlist code, comparing it to the
> patch you lined to).
> 
> I'm tempted to say its a good idea, but there may be better reason why
> it wasn't applied.
> 
> Best wishes,
> 



_______________________________________________
geda-user mailing list
geda-user@xxxxxxxxxxxxxx
http://www.seul.org/cgi-bin/mailman/listinfo/geda-user