Save outputs in extracted netlist - Filter in Results Browser

Hello to all,

We are simulating large nets (50,000 range) and one of the problems we
have is to limit the number of outputs to be saved. The simulation
environment allows few options save-all save-selected etc., but our
netlists are extracted, so it is impossible to decent and "select on
the schematic" the desired outputs.

Here are couple of questions:

How can you save selected netlists on an extracted netlist, either by
net name or an entire instance (for hierarchical netlist)?

How do you use effectively the filter function in Results Browser ? (
Frankly all the king's horses and men could not figure this one yet.)

Thanks,

Kris

Maxtor Corp.

 

Kris:
If I am not mistaken, you can select outputs to be saved on the
schematic even though you are simulating the extracted view. I
believe it is called out of context probing.

 

Erik,

Thanks for the suggestion, I think that I was a bit misleading as I
don't have an extracted view, just an extracted netlist in text
format. Will this still work ?

Here is what I did so far. I wrote a skill code to scan the input file
and extract netlists that I am interested in. For example if I want to
save instance I1 with all the hierarchy underneath it, the skill code
will create a file that looks like this:

save I1\/net1
save I1\/net2
save I1\/I6\/net3
and so on for all occurances of I1

The file name is update.scs, believe it or not, the extension has to
be .scs, I went through Cadence help to get this one. Then you include
this file in your simulation and click on the option "Select signals
to output" "selected" and voila the desired nets are saved.

It might not be pretty but it works,

Kris