Why does spp in 5.0.33 behave differently than spp in 4.4.6?

Hi,
has anybody tried to convert a spice netlist to spectre with spp in
5.0.33? In that case, did you have the feeling that spp translated MOS
transistors as if they have 5 pins and not 4? I see with 5.0.33 spp -h
that it is possible to force 5 6 and 7 terminal mosfets, but no
possibility to force 4 terminal devices.

After upgrading from 4.4.6 to 5.0.33 the very same spice netlist did
not convert right. Luckily I have 4.4.6 handy
(http://modulefiles.sourceforge.net) and could do a quick rollback to
get it properly converted.

Anybody know what those extra terminals are used for?

--
Svenn

 

[Andrew Beckett]

Without a specific example, it's hard to say. Did you log this as a customer
support call? (that would be the right thing to do here, I think).

I couldn't spot any obvious new problems with spp.

Andrew.

On 4 Jul 2004 23:46:00 -0700, svenn.are@bjerkem.de wrote:

Hi,
has anybody tried to convert a spice netlist to spectre with spp in
5.0.33? In that case, did you have the feeling that spp translated MOS
transistors as if they have 5 pins and not 4? I see with 5.0.33 spp -h
that it is possible to force 5 6 and 7 terminal mosfets, but no
possibility to force 4 terminal devices.

After upgrading from 4.4.6 to 5.0.33 the very same spice netlist did
not convert right. Luckily I have 4.4.6 handy
(http://modulefiles.sourceforge.net) and could do a quick rollback to
get it properly converted.

Anybody know what those extra terminals are used for?

--
Andrew Beckett
Senior Technical Leader
Custom IC Solutions
Cadence Design Systems Ltd