Re: gEDA-user: A little puzzled about the purpose of gschem

[Madhusudan Singh <singh.madhusudan@xxxxxxxxx>]

   Thanks to everyone who responded.

   Just so that everyone is clear, I understand and appreciate the amount
   of work that has likely gone into geda. I have authored two smaller,
   unrelated LGPL projects myself and would never mock anyone for doing
   this.

   A couple of people have mentioned that I need to enter a library. My
   questions:

   Do these libraries bind the attributes to the symbols (so that I do not
   have to do any post-gschem drawing and pre-gnetlist work) ?

   As to the respondent who said that gschem is useful because it creates
   the net that gnetlist can use to generate the netlist, I am sorry to
   say that you are missing the bigger picture in the workflow. The way my
   initial experience was - I found that I would have to enter portions of
   that spice netlist in some scattered boxes in gschem, then use gnetlist
   to presumably do some topological analysis and write out the actual
   node numbers in the spice netlist. That is where there is a disconnect.
   There is no way that that is a more efficient use of anyone's time than
   simply drawing a circuit by hand, assigning node numbers and typing it
   all in in one shot.

   Now, if I could use a library that came with properly defined symbols
   (instead of just empty pretty pictures that they are right now), I
   could see the utility of doing this. Without that, its a waste of time.

   And to the respondent who said that GUIs are not necessarily faster
   than typing it by hand, I would have to disagree. I am hazarding a
   guess that you have not used Design Architect (and yes, I have timed
   the two approaches in the past - the DA bit was much much faster for
   even a moderately complicated circuit). The difference was - that
   beyond defining input and output nodes, I did not have to do any
   post-drawing pointy-clicky.

   All I now need are good libraries and a proper tutorial that shows how
   they can be used in gschem properly (see above). Someone linked a
   source - are there others ? Most vendors provide text spice libraries.
   How can they be converted into a form that gschem can understand ?


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