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Netlist fails due to missing "nlAction" value

HoWei

We receive IP packages (OA-libs) from partners in which the instances do have the user-property "nlAction" without any value given.

This results in netlisting-errors, because "nlAction" requires the value "stop" or "ignore".

Currently the only option I see is to edit all instances in the hierarchy manually and save the IP cells again. But of course this is a bad way, because we do not want to touch the delivered IPs.

What are the options to fix this without editing all the instance-parameters manually ?

Can I set a global parameter for "lnAction" which is used by those instances ?

Parents

  • I encounter a similar issue with AMS simulator recently. I need this nlaction there because I have this cell instantiated somewhere else with nlaction=ignore. It looks like to me, the simulation with both spectre or AMS goes fine without a cadence upgrade. It looks like the simulator now force to check this parameter set or not. It's a good thing but there should be a parameter for the AMS to disable this check (since now it's forced to check) otherwise there are huge amount of maintenance issue in legacy library.

    BTW, I also find this thread earlier, https://designers-guide.org/forum/YaBB.pl?action=print;num=1447429351, but it looks like I should put nlaction=stop based on the cadence help doc.

  • in reply to monglebest2022

    I'm pretty certain having nlAction with no recognised value has never been supported (my reply on that other post was from 8 years ago, and it was the same then). Are you saying that you have nlAction=ignore on the spectre view or symbol view somewhere and you then need to override that on a specific instance? That's a reasonable justification for having an "allowed" value, but it's a pretty rare scenario. It's not obvious to me whether setting nlAction=stop is the right thing to do or not (It depends on whether it really is a stopping view). 

    I suggest you contact customer support so that the specifics of what you need can be discussed and then an enhancement filed if required. I had been wondering whether using nlIgnore instead would help, but I don't think that does (I don't know your specific requirement, but I think having nlIgnore set to ignore for a particular simulator on the master or switch view will supersede any instance setting - I didn't test this).

    Andrew

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  • in reply to monglebest2022

    I'm pretty certain having nlAction with no recognised value has never been supported (my reply on that other post was from 8 years ago, and it was the same then). Are you saying that you have nlAction=ignore on the spectre view or symbol view somewhere and you then need to override that on a specific instance? That's a reasonable justification for having an "allowed" value, but it's a pretty rare scenario. It's not obvious to me whether setting nlAction=stop is the right thing to do or not (It depends on whether it really is a stopping view). 

    I suggest you contact customer support so that the specifics of what you need can be discussed and then an enhancement filed if required. I had been wondering whether using nlIgnore instead would help, but I don't think that does (I don't know your specific requirement, but I think having nlIgnore set to ignore for a particular simulator on the master or switch view will supersede any instance setting - I didn't test this).

    Andrew

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