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cjak's avatar
cjak
Icon for Occasional Contributor rankOccasional Contributor
8 days ago

QuestaSim - Fatal error simulating altpll-ip

Hi, I am trying to simulate design including the altpll-ip, but I get this fatal error: I have changed timescale to ps with no luck. Any suggestions?
Simulation
cjak's avatar
cjak
Icon for Occasional Contributor rankOccasional Contributor
5 days ago

hm, adding reset to init the PLL caused the error to come back :-)

I added stimuli controlling the areset-input on the PLL. Setting reset high for 10 us, then low.

  • RichardT_altera's avatar
    RichardT_altera
    Icon for Super Contributor rankSuper Contributor
    1 day ago

    Have you tried running the simulation using the NativeLink simulation flow?
    Without the design files, it is challenging to debug and understand the root cause. If possible, creating a simplified design would help us investigate further.

    Otherwise, the currently identified possible root cause is described in the KDB below, which I believe you have already reviewed:
    https://community.altera.com/kb/knowledge-base/fatal-sigfpe-floating-point-exception/342914

    Regards,
    Richard Tan
     

    • cjak's avatar
      cjak
      Icon for Occasional Contributor rankOccasional Contributor
      15 hours ago

      No, I have not tried NativeLink simulation flow before. How is it done?

      Changing to ps makes no difference.