XSIM 2025.2 issue with CovPType in procedure

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  • March 3, 2026 at 20:51 #2880
    Matthias Alles
    Member

    Hi,
    I’m having an issue with OSVVM in XSIM. I have a procedure that uses a CovPType as inout parameter, similar to the CompareBins procedure in CoveragePkg. XSIM gives me this error for my procedure as well as for the CompareBins procedure of the CoveragePkg:

    FATAL_ERROR: Vivado Simulator kernel has discovered an exceptional condition from which it cannot recover. Process will terminate.

    Has anyone a workaround for this? Seems to be a bug in XSIM. Other simulators work just fine, e.g. NVC or commercial ones.

    Thanks
    Matthias

    March 3, 2026 at 21:08 #2881
    Matthias Alles
    Member

    OK, I just checked, this seems to be a regression in XSIM. It works in 2024.2.2 as well as 2025.1.

    March 25, 2026 at 15:01 #2890
    Jim Lewis
    Member

    Hi Matthias,
    XSIM seems to be a moving target. In 2024.2 similar things happened. Some of what worked in 2023.2 no longer worked. I was able to change things so they worked again – and many things that did not work previously started to work.

    Best Regards,
    Jim

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