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ran out of data while unpack

Ravisinha
Hello All, In my project i am facing a very unpleasant error from specman : *** Error: Ran out of data while trying to unpack (use 'trace packing' for further details). the scenario is : i am sending some packet, all the checking and scoreaboard checking is finished. Now on the Bus there is nothing, means now bus is in IDLE state. After that again i am waiting for some more time to make sure no transaction is pending on any side. After that i have issued a RESET (a HW reset, which will reset all my peripheral), as soon as it enters into RESET i am getting the same error. In my verification env i have not use "unpack" function anywhere but still i am facing this issue. Can anybody please help me in this, i even tried by setting trace packing in specman but its tacking hell lots of time to reach to that point. Thanks

  • Hi,

    Here's how I would debug this issue:

    1. Grep all the files in your environment for the word "unpack". To grep all files in your env for a given expression use specviews search window or take a look here. Maybe you do some unpacking but have forgot about it.

    2. If you find some place where you use unpack place a breakpoint on it, if you don't want to break on it every time use "break if" and specify (sys.time > some time just before your error occurs) as condition.

    3. Run with break on error. This will take you to the line where the error occures, unless it comes from encrypted code.

    Avidan Efody

    Verifigen

    www.specman-verification.com

     

     

     

     

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