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Overloading $error in SVA under NCSIM

archive

Referring to recent thread on www.verificationguild.com, topic:

Assertion failures and pass/fail status


Adam asked:

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Any word from Cadence on the ability to substitute your own $error() routine ?

This definitely would be nice.
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I know that atleast one other vendor allows it easily. What about NC? Or is there any other easier way to keep a count of all SVA errors and declare PASS/FAIL at the end? How does URM handle this? This is a very common problem as many  RTL engineers write assertions and it is hard to ask them to keep following a standard action-block syntax. Also with IPs etc. it is nearly impossible to guarantee this.

So it will be really useful to have the SVA errors accounting to simulation PASS/FAIL.

Any advice on this will be appreciated.

Thanks
Ajeetha, CVC
www.noveldv.com


Originally posted in cdnusers.org by ajeetha
Parents

  • Posted By tpylant on 3/07/2007 7:43 AM
    I don't understand the difference between calling $error and calling `DUT_ERROR:

    assert(error_cond) $error;

    vs.

    assert(error_cond) `DUT_ERROR;



    Tim

    The difference is that SV LRM demands that $error is implicitly called when an assertion fails, so with:

      assert (error_cond);

    Tool should implicitly call $error.

    Regards
    Ajeetha, CVC
    www.noveldv.com


    Originally posted in cdnusers.org by ajeetha
Reply

  • Posted By tpylant on 3/07/2007 7:43 AM
    I don't understand the difference between calling $error and calling `DUT_ERROR:

    assert(error_cond) $error;

    vs.

    assert(error_cond) `DUT_ERROR;



    Tim

    The difference is that SV LRM demands that $error is implicitly called when an assertion fails, so with:

      assert (error_cond);

    Tool should implicitly call $error.

    Regards
    Ajeetha, CVC
    www.noveldv.com


    Originally posted in cdnusers.org by ajeetha
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