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Altera_Forum's avatar
Altera_Forum
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11 years ago

DDR3 Micron simulation model in Modelsim

Hi,

I'm trying to simulate the DDR3 along with Micron model in modelsim but no luck.

I keep getting this error:

# tb.sdramddr3_0.file_io_open: at time 0.0 ns warning: no +model_data option specified, using /tmp.# ** warning: (vsim-3533) [fofiw] - failed to open file "/tmp/tb.sdramddr3_0.open_bank_file.0" for writing.# no such file or directory. (errno = enoent) : e:/user/ddr_sim/ddr3.v(622)

ANy help from someone who did it?

Thx,

Ron

4 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    Hi Ron,

    Have you found a solution?

    Anyway, I created a "tmp" folder in the simulation directory and I did not get that error anymore.

    Zeahr
  • Altera_Forum's avatar
    Altera_Forum
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    11 years ago

    Hi,

    No, I did not.

    Nevertheless, I did something else, which was successful.

    I took Altera example design, extracted DDR3 component from it, and I used it as an external DDR model. Works great.

    That way I'm using all Altera files for the model.

    Ron
  • Altera_Forum's avatar
    Altera_Forum
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    10 years ago

    On modelsim's vsim line, you must specify the <folder> that you are going to use for files which are going to store the data that you are writing to DDR3. Following is an example: vsim -novopt +model_data+ddr3_tmp -t ps -L work -L work_lib <rest of your libraties> <testbench_file>.

  • Altera_Forum's avatar
    Altera_Forum
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    10 years ago

    In this case, the <folder> name is ddr3_tmp. Micron's ddr3.v model reads the vsim command line +option and now has a folder so it won't complain.