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Subject: Re: [geda-help] New user help with gEDA-  gschem, ngspice, and opamps
From: John Doty <jpd AT noqsi DOT com>
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Date: Thu, 15 Nov 2012 17:19:18 -0700
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On Nov 15, 2012, at 2:29 PM, keitho AT strucktower DOT com wrote:

> I see that gnetlist has designated my opamp with a "U" instead of an "X",
> not sure what that suggests.

That's why it doesn't work. You need to start the refdes of a device modeled by a subcircuit with "X".

My new netlist back end at https://github.com/noqsi/gnet-spice-noqsi handles this more flexibly, but the documentation is a bit terse (just a README). There's also a (rapidly evolving) project using this at https://github.com/noqsi/VideoASIC, which might be of assistance as an example, although it's rather complex.

John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd AT noqsi DOT com