[Ngspice-devel] model numbering

[Martin, M. <Mar...@jh...>]

I recently got ngspice running.  it seems to work fine and I plan to
incorporate
it into my work flow as soon as I relearn some of differences from my
usual 
simulator (HSPICE)

I see that in ngspice mos level =49 is used for BSIM3v1S (Serban's
Code).
I consider this an unfortunate choice because in HSPICE mos level=49 is
an HSPICE enhanced BSIM3v3 model.  Since some foundries supply HSPICE
level 49
models, I think some users may get themselves confused when they try to
use
the HSPICE level 49 model with ngspice, especially users that are only
casually
familiar with the various models out there. 

One solutions would be to change the level number.  However, I realize
this is 
probably not desirable at this stage.  Therefore, I suggest that the
documentation 
has some words to inform the user that the ngspice mos level 49 is not
equivalent to 
the HSPICE level 49 model.

Thanks

Mark