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Date: Fri, 18 Apr 2014 15:53:23 -0400
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From: DJ Delorie <dj AT delorie DOT com>
To: geda-help AT delorie DOT com
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	(message from Cyrus Vatan on Fri, 18 Apr 2014 13:23:22 -0400)
Subject: Re: [geda-help] Alphanumeric pins a lie?
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> I assumed the pin seq attribute drove which pin would be mapped when
> they were letters.

The pinseq attribute is used primarily for the simulators, and is
ignored by PCB.  IIRC the only effect it has on the netlist is that it
determines what order the pins are scanned for netlisting.

> although i am suprised there is no error when there is a mismatch between
> sym and footprint pins.

Did you check the Messages window?

Note that the *only* connection between the symbol and the footprint
is the netlist, so any mismatch would show up as a netlist error.

Also, there's no rule that says there has to be a perfect match
between symbols and footprints.  A footprint might have extra pins
that aren't mentioned in the schematic.