gEDA-user: Opensymbol library

[Peter Clifton <pcjc2@xxxxxxxxx>]

Has anyone seen this site?

http://freelabs.com/~whitis/opensymbol/


We get bad press!

"""
What about the gEDA/xpcb libraries?

Due to poorly conceived standards, limitations of the gschem package
itself, and GPL fanaticism, these symbols are not usable. 

      * GPL license prevents most commercial uses or even free uses
        where the creator wants to release the project under a more
        reasonable license. 
      * 
      * Gschem schematic symbols are based on a preposterous 0.3" pin
        spacing. At that pin spacing, you can't fit enough of a
        schematic on a sheet of paper to make a compehensible schematic
        for circuits of any reasonable complexity. In fact, many of the
        parts I use would not fit on an 8-1/2x11 or even 11x17 sheet of
        paper even without connecting components. Even worse, they used
        a 0.3 mil pin spacing but didn't use 0.3 mil grid so the symbols
        can't be reduced to 0.1" grid (even though I wrote a program to
        do so). Symbols based on a 0.1" spacing can be scaled up but
        0.3" symbols can not scale down. Symbols drawn at the more
        common 0.1" lead spacing are quite readable and can even be read
        when reduced 2:1 on a 600dpi laser printer. 
        
      * gschem doesn't support pinswapping information, either for
        simple cases such as gates or more complex cases where you need
        to swap output pins when you swap the corresponding input pin. 
        
      * gschem does not support demorgan equivalents. 
        
      * gschem makes the user act as janitor, positioning all the
        invisable pin attributes. 
        
      * Does not handle power pins properly.

"""

I believe there are (if anyone cares) a few points the author could be
set straight on - especially the licensing.

Regards,

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)



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