Re: gEDA-user: gnetlist - Found unknown component. Refdes..

["John P. Doty" <jpd@xxxxxxxxx>]

Csanyi Pal wrote:
> "John P. Doty" <jpd@xxxxxxxxx> writes:
>
>   
>> Csanyi Pal wrote:
>>     
>>> I'm using gedasuite20080328 installed from tarball.
>>>
>>> When I'm running:
>>> gnetlist -v -g spice-sdb -o WPB_F18_PCB_v2_Prog.net
>>> WPB_F18_PCB_v2_Prog.sch >gnetlist_error
>>>
>>> I get the messages:
>>>   
>>>       
>> Much, perhaps all, of your trouble seems to be due to your use of the 
>> toxic IEC417/ground.sym, which is not a proper ground symbol. In 
>> general, you should not be using the IEC417 library symbols in 
>> schematics: they are only for block diagrams. Stuart fixed the ground 
>> symbol anyway (it's the most likely to cause trouble) at the January 
>> code sprint, but I suppose it hasn't made it to the version you're 
>> using. Use  power/gnd-1.sym.
>>     
>
> Thanks, I used Power rails/gnd-1.sym and the error gone.
>
>   
I note that using a SPICE netlister on a schematic intended for PCB 
layout is not generally useful. A SPICE simulation needs sources that 
aren't in the schematic, and SPICE will think your connectors are FETs 
(J) and capacitors (C). In cases like this, I tend to snip out the piece 
I really need to understand and make a separate simulation schematic.

-- 
John Doty      Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd@xxxxxxxxx 



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