Spice Simulation Program with Integrated Circuit Emphasis.

Creative Electronic Solutions

After not touching Spice since school, I've started using it as a sanity check, or where things would be prohibitively expensive to build up.

I've been using ngspice, based on Berkeley Spice 3f5, released under the Berkeley License at http://sourceforge.net/projects/ngspice
Always nice to get a big, powerful, confusing iterative calculator for my tax dollars.. and I appreciate the work the community has done
in porting this to Linux where I can use it.

I ran into the fact that Spice 3 does not include the "POLY" statement for non-linear polynomials that Spice 2 did. 

Seems as if a lot of the freely available models on the web for National, ADI, TI, etc, use the old skool POLY statements.  They're a pain to convert.  I figured somebody would have written a converter.. there was some limited awk code out there, and a whole lot of  postings from folks who also were also looking for a spice2 to spice3 converter.

The best way to handle this is probably to compile ngspice with options to handle the poly statements,   -- but if this is not practical,

I'm releasing a spice2to3.pl converter here.   I started this thinking it would be easy, but couldn't figure out an elegant way to expand the polynomials and did it with a brute force approach using the Math::Combinatorial module to come up with the combinations.    You'll need the Math::Combinatorics Perl module, which can be found here on CPAN.

I haven't done much testing at all. (in fact, haven't tested current controlled sources AT ALL.)   Use at your own risk!  I'd be interested to get bugs or improvements back to Alex at d n l n k dot see oh em.