wrote: > > The spice-noqsi backend works fine in gEDA/gaf. Also, it shouldn't be > hard to adapt the Python version of the backend to your needs: > > > https://github.com/rlutz/geda-gaf/blob/master/xorn/src/backend/gnet_spice= _noqsi.py Thanks, will take a look at that. Hyral --0000000000001f6fdf05c6b21582 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

On Fri, Jul 9, 2021 at 9:07 PM John Doty <jpd AT noqsi DOT com> wrote:

On Jul 9, 2021, at 7:32 AM, hyral.sacai (hyral DOT sacai AT gmail DOT com) = [via=C2=A0geda-h= elp AT delorie DOT com] <geda-help AT delorie DOT com> wrote:

Unfortunately, I'm using a specia= l circuit simulator that does not like the gnetlist result where symbols ar= e associated with sub-schematics via the source attribute.=C2=A0

What, exactly, is the trouble?

<= div>Have you tried the spice-noqsi back end? It can handle this sort of org= anization. See=C2=A0https://github.com/noqsi/gn= et-spice-noqsi/wiki/Broadband-amplifier-board. Unfortunately, I am no l= onger maintaining it for gEDA, but it works fine in Lepton, I just used it = yesterday.

When using the= source attribute, the gnetlist (spice-sdb) result is a flattened netlist u= sing syntax like "X2/X0/R1" "X1/X3/R1" and the circuit = simulator does not support this, but it does support the .SUBCKT hierarchic= al approach which I can achieve by using the file attribute to point to the= appropriate subckt netlist file, it's just that it would be nice to sp= ecify a folder of subckt netlist files that gnetlist will search in so that= users of my library don't have to specify the exact location of those = netlists.=C2=A0

I took a look at the BBamp ex= ample and tried to emulate the attributes pointed out in the following text= :

The =
BBamp.sch schematic is the amplifier itself. Its symbol is included in the =
drawing as a graphical comment for the reader, using a graphical=3D1 attrib=
ute. A toplevel "spice-prolog=3D.subckt BBamp %up" attribute crea=
tes the .subckt "card" using the %up function. It is mirrored by =
a "spice-prototype=3DX? %down BBamp" attribute in the symbol itse=
lf. The SPICE code generated by this pair of attributes mimics the semantic=
s of hierarchy traversal in gnetlist. The symbol also contains "file=
=3DBBamp.cir". This generates ".INCLUDE BBamp.cir" in the hi=
gher level SPICE netlist.

I couldn= 9;t get it to work right away, probably missed something, will look at it m= ore earnestly later.

But if I do use the source attribute a= pproach with the spice-noqsi backend, will it generate a netlist that uses = .SUBCKT definitions instead of the forward slash syntax (X1/X2/X3...)? From= the above description, it sounds like it does.

On Fri, Jul 9, 20= 21 at 10:14 PM Roland Lutz <rlutz AT hedmen DOT org> wrote:

The spice-noqsi backend works fine in gEDA/gaf.=C2=A0 Also, it shouldn'= t be
hard to adapt the Python version of the backend to your needs:

https://github.com= /rlutz/geda-gaf/blob/master/xorn/src/backend/gnet_spice_noqsi.py

Thanks, will take a look at that.

<= /div>
Hyral=C2=A0

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