Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Altera PLL simulation with Modelsim

Hi All,

I am currently simulating a design which internally uses a ALTPLL in one of its internal modules. When I try to simulate in Modelsim I get the following error message when I do the run command:

# ** Fatal: (SIGFPE) Floating point exception. And comes as a Fatal Error in altera_mf.vhd (which is autogenerated by Altera). I tried setting my resolution to different values , still I am seeing the same error. Currently my resolution is set to 'ps'.Any help will be much appreciated.

Thanks

Binu

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    I guess, -t ps has the same effect as this setting in modelsim.ini? 

    
Resolution = ps
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    I just fixed my problem by adding -t 1ps:

    vsim -vopt work.pll52_3s_vhd_tst -t 1ps

    I was getting the same error without that.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    17 years ago

    Hi Binupr,

    Did you find a solution to this issue? I am having a similar issue and would be interested to know how you finally got around it.

    Many thanks,

    Ardni