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Date: Tue, 20 Sep 2016 11:17:38 -0700
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] pin number and pin sequence of diodes
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From: conover AT rahul DOT net (John Conover)
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Thanks, Nicklas. Spice was the issue. The situation was resolved by
swapping the PINSEQs.

    John

Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com] writes:
> > Unless I am mistaken, the PINSEQ is reversed in many of the library
> > diodes.
> > 
> > Spice requires the anode node followed by the cathode node, as
> > determined by the PINSEQs, (these, I think, are reversed in many of
> > the diodes in the library.)
> > 
> > Pcb routes on the pin number, (which are correct in most of the diodes
> > in the library.)
> > 
> > So, if I want a spice simulation of a diode, PINSEQ=1 would be the
> > anode, and PINSEQ=2 would be the cathode. I think this is the way
> > gnetlist -g spice-sdb works.
> > 
> > If I want to layout the diode circuit, PINNUMBER=1 would be the
> > cathode, and PINNUMBER=2 would be the anode, (and the PINLABEL would
> > be K and A, respectively.) I think this is the way gsch2pcb works.
> > 
> > Am I right?
> > 
> >     Thanks,
> > 
> >     John
> > 
> > -- 
> > 
> > John Conover, conover AT rahul DOT net, http://www.johncon.com/
> 
> In gschem numbering have no particular meaning since it is a graphical representation of the circuit supposed to be read by a human. For layout footprints usually are simple numbers although characters may also be used A1,A2,A3,... and then there may be pin swapping and gate swapping. For spice I have no idea.
> 
> 
> -- 
> Nicklas Karlsson <nicklas DOT karlsson17 AT gmail DOT com>

-- 

John Conover, conover AT rahul DOT net, http://www.johncon.com/