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Invoke Callbacks in Pcell and PVS

TobiasMrks

Hello,

I am building a PCell which includes a transistor of a PDK and to invoke the callbacks I am using the CCSinvokedCallbacks function recommended in "How to call CDF callbacks procedurally from SKILL?".

I am loading the CCSinvokedCallbacks file:

load("CCSinvokeCdfCallbacks.il")

    I call the CCSinvokedCallbacks in my PCell code and when I include my PCell in the layout, it works!


    But when I am now using PVS to check for drc errors I get the following errors:

    *WARNING* (DB-270001): Pcell evaluation for TESTS/test/layout has the following error(s):

    *WARNING* (DB-270002): ("eval" 0 t nil ("*Error* eval: undefined function" CCSinvokeCdfCallbacks))

    *WARNING* (DB-270003): Error kept in "errorDesc" property of the label "pcellEvalFailed" on layer/purpose "marker/error" in the submaster.

    ERROR (XSTRM-231): Pcell evaluation failed for 'TESTS/test/layout' because the pcell SKILL code contains either a syntax error or an unsupported XStream function. Check the standard output or the Virtuoso log file for more information. Either correct the pcell SKILL code or ignore the error by enabling the 'ignorePcellEvalFail' option for XStream Out.

    INFO (XSTRM-273): Translation failed. '1' error(s) and '6' warning(s) found.

    What is the recommanded way to get around this?
    Thank you in advance.

    Best regards

    Tobias

    Parents

    • Tobias,

      Happy to see you using my code to good effect!

      Anyway, what you should do is to add a file called "libInit.il" inside the library containing the pcell. This file should then load the CCSinvokeCdfCallbacks.il file. 

      The idea is that the first time the library is accessed in Virtuoso, in the stream interface or any other application that reads the database, it will load the libInit.il which will in turn load the callback-calling code. This means you wouldn't need to load the code from your .cdsinit as it would be auto-loaded from the libInit.il file.

      Hope that helps,

      Regards,

      Andrew.

    Reply

    • Tobias,

      Happy to see you using my code to good effect!

      Anyway, what you should do is to add a file called "libInit.il" inside the library containing the pcell. This file should then load the CCSinvokeCdfCallbacks.il file. 

      The idea is that the first time the library is accessed in Virtuoso, in the stream interface or any other application that reads the database, it will load the libInit.il which will in turn load the callback-calling code. This means you wouldn't need to load the code from your .cdsinit as it would be auto-loaded from the libInit.il file.

      Hope that helps,

      Regards,

      Andrew.

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