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Simulators >> Circuit Simulators >> Renetlist the schematic in ocean
https://designers-guide.org/forum/YaBB.pl?num=1252045806

Message started by avlsi on Sep 3^rd, 2009, 11:30pm

Title: Renetlist the schematic in ocean
Post by avlsi on Sep 3^rd, 2009, 11:30pm

Hi everyone,

Is there a way to netlist the schematic using OCEAN?

I am using cadence 6.1.3 environment.I tried to specify the design() using lib,cell,view and createnetlist command. But it is not able to renetlist.

Thanks in advance.

Title: Re: Renetlist the schematic in ocean
Post by Andrew Beckett on Sep 4^th, 2009, 3:55am

In IC5141 there was a restriction that you couldn't use the design(lib cell view) form in the ocean executable. That's no longer the case in IC613, so it should be possible to renetlist. Normally that would be done with createNetlist(?recreateAll t). Is that what you were doing?

Which simulator are you using? It might not a difference if you were using AMS Cell-based netlisting...

Regards,

Andrew.

Title: Re: Renetlist the schematic in ocean
Post by avlsi on Sep 7^th, 2009, 11:57pm

I am using Spectre simulator.

In my oceanscript..

simulator('spectre)
design(lib,cell,view)
-----------line3
analysis()
desVar()
-----------line6
run()

At which place(line3/line6) should the command createNetlist(?reCreateAll t) be used? Which one makes more sense?

I am not able to renetlist by executing the oceanscript in a terminal, where as in CIW with the load command it is able to renetlist.

Please let me know..if i am missing anything.

Title: Re: Renetlist the schematic in ocean
Post by Andrew Beckett on Jan 3^rd, 2010, 7:31am

It depends on whether you want the resulting netlist input.scs to contain the design variables and analysis statements. If at line 3 it won't contain the analysis statements or design variables; if at line 6 it will. However, since the run() statement is present, it will produce the input.scs with the analyses and design variables anyway.

So the createNetlist(?recreateAll t) is purely for the purpose of forcing a renetlisting, rather than rely on the incremental netlister. Therefore it shouldn't matter where you put it.

You can use this (in IC5141) by doing:

icfb -restore oceanScript.ocn

You cannot (as I said before) use the ocean executable in IC5141 because that doesn't have the ability to netlist (it does in IC613 though).

Regards,

Andrew.