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how to check if a specific layer was used/created when LVS was running

Question asked by marcel.preda on Aug 5, 2010
Latest reply on Aug 9, 2010 by samantha_lizak

Hi there,


I need a kind of flag in SVDB database, to check if a specific rules file was used or not.
How can I do this?
My 1st idea was to create a dummy layer and to interrogate the calibre query server with "GDS MAP" if such layer exists.
Unfortunately looks like the solution is not working, seems "GDS MAP" query returns only the layers that have connectivity.


In a few words what I want to do:
I want to add some LVS rules which will create dummy(parasitics) devices based on some shapes overlap.


Latter on I want to interrogate the SVDB (using calibre query server) and based on the connectivity of those parasitics to highlight or not something in RVE.
This part is done from a TclTk script, and it can be run few hours later after the LVS .
The idea is that my rules file(which creates dummy devices) is not mandatory included into our "standard" LVS rules.
It can be included or not by the user.


If I will not find any "parasitic device" when I interrogate the SVDB that means:
      1 - the chip is clean, the check stops here.
OR 2 - my rules file was not included .
How can I make the difference ?




PS: My 1st post here, and I'm a beginner with calibre - just started to learn it few time ago.