Designer’s Guide Community

kamesh419 Junior Member Offline Posts: 25	Different netlist produced from spectre & spectreS May 20^th, 2005, 8:12am Dear all, Why is it that the netlist produced for Spectre and SpectreS different for the same design and in what way they are different ? Thanks and Regards, Kamesh.
Back to top	Truth lies everywhere and partially even with the error. IP Logged

Ken Kundert

Global Moderator

Offline

Posts: 2386
Silicon Valley

Re: Different netlist produced from spectre &
Reply #1 - May 20^th, 2005, 12:12pm

SpectreS is the remnants of an ancient hack in which a parameterized netlist was generated for CadenceSpice, which evaluated all the expressions and produced a new netlist for Spectre will all parameters removed. This was a very complicated affair that involved partially flattening the design. It should have been removed from Artist years ago.

I recommend that you completely ignore SpectreS.

-Ken

Back to top

IP Logged

kamesh419

Junior Member

Offline

Posts: 25

Re: Different netlist produced from spectre &
Reply #2 - May 23^rd, 2005, 8:27am

Thanks Ken for your reply. I am trying to use Spectre now but I have the following problem.

I am trying to simulate a design. All works well with "spectreS" simulator, but when it comes to "spectre" then I get an error.

Quote:

Error found by spectre during circuit read-in.
"input.scs" 8: Unable to open library file
`/opt/eda/xfab/spectre/xc06/xc06.scs'.
No such file or directory.

spectre terminated prematurely due to fatal error.

I am using XFAB 0.6u technology and the folder xc06 corresponds to that. I have checked that the library file xc06.scs file indeed does not exist.

Why is it that it works well with "spectreS" and not with "spectre". How could i make my design work for "spectre"? I am new to cadence.

Thanks in advance,
Kamesh

Back to top

Truth lies everywhere and partially even with the error.

IP Logged

kamesh419

Junior Member

Offline

Posts: 25

Re: Different netlist produced from spectre &
Reply #3 - May 23^rd, 2005, 10:15am

I have just checked out the documentaion for X-FAB. It has a link to "X-FAB supported Design Programs". Here is the link to the screenshot.

http://www.aisl.cyd.liu.se/temp/screen.jpg

Unfortunately "spectre" is no where to be found there. But i could find "spectreS".

So i guess i have to work with spectreS. Any suggestions.

Back to top

Truth lies everywhere and partially even with the error.

IP Logged

Andrew Beckett Senior Fellow Offline Life, don't talk to me about Life... Posts: 1742 Bracknell, UK	Re: Different netlist produced from spectre & Reply #4 - May 25^th, 2005, 10:16pm This question was resolved on comp.cad.cadence: http://groups.google.co.uk/group/comp.cad.cadence/browse_thread/thread/9afce5260... Thought I'd reference this for completeness. Regards, Andrew.
Back to top	IP Logged