Re: Poll: Who works for the Semiconductor industry?

[Hotte <spam@die-kempers.de>]

On Oct 4, 9:16 pm, glen herrmannsfeldt <g...@ugcs.caltech.edu> wrote:
> Michael J. Mahon wrote:
>
> (snip)
>
> > Spice is an "analog" simulator and makes very heavy use of floating-
> > point, so both speed and RAM space would be major issues running on
> > an Apple II.
>
> You could do small problems, like the ones in books about
> learning to use Spice.  Sometimes for real problems one only
> needs to run Spice on a small part.
>
> I haven't looked to see how big it is, though.
> You might want more than 64K of (bank switched) RAM to
> use it.
>
> -- glen


I totally agree. We allways try a simulation of the whole device but
this can take several days on our mashines.
For the most times I am only intrested in a handfull of elements .

I found a spice2g6 Fortran source code. 530k size. The biniary will
hopefully much smaller.
Maybe I can compile it on a IIGS? Is there a Fortran compiler
availiable?

After glancing through the source code I gave up hope to get it
running on any Apple II.
The program will consume most of the memory and there will be no room
left for calculations.
Just by looking how they build up  a memory matrix to hold the values
you can see that the Apple can not handle it.

Maybe a stripped down version for simple RC networks will do but just
a simple transistor array will cause trouble.


By diggin arround here in TI I found a PSPICE from MicroSim
Corporation with Manual and Floppies dated 1987.

Wolfgang