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[Gnucap-devel] Commercial BSIM4 model crashes gnucap
From: |
Ruben Undheim |
Subject: |
[Gnucap-devel] Commercial BSIM4 model crashes gnucap |
Date: |
Sat, 10 Nov 2018 10:27:34 +0100 |
Hi,
I've been playing around a bit with CMOS transistor models. Using some
commercial BSIM4 models for NMOS and PMOS, I was surprisingly able to
get it to load in ngspice without much trouble at all. It even
simulated with reasonable results! When loading it in gnucap, I get a
number of warnings and then gnucap crashes.
Using the bsim465 model from gnucap-models [1], it seems like gnucap
understands all the model parameters in the model, but it still gets
some problems..
I get thousands of messages like this:
parameter # not specified, using default
parameter # not specified, using default
..
..
and some like this:
parameter ad not specified, using default
parameter ad value is "NOT_INPUT"
..
and then thousands of these:
parameter # recursion too deep
parameter # recursion too deep
...
At last, it crashes with:
gnucap: /usr/include/gnucap/spice-wrapper.cc:1074: virtual void
DEV_SPICE::precalc_last(): Assertion `_maxEqNum == ckt()->CKTmaxEqNum'
failed.
Any ideas where I should start to debug? or if this is some kind of
known issue/expected behaviour?
Best regards
Ruben
[1] https://git.savannah.gnu.org/git/gnucap/gnucap-models.git