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Altera_Forum
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8 years ago

altera_onchip_flash Modelsim simulation error

Hi,

I'm trying to simulate the altera_onchip_flash for the MAX10 (10M25DA) FPGA by using the Altera-Modelsim. I cannot simulate the module because I get this eror:

ERROR: ./e_OnChipFlash/synthesis/submodules/altera_onchip_flash.v(305): Instantiation of 'altera_onchip_flash_block' failed. The design unit was not found.

Is there any way to solve this problem ?

Thanks in advance

Daniel

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    8 years ago

    Hi Daniel,

    I'm experiencing the same issue as well. It appears that Qsys delivers a file altera_onchip_flash_block.v in the following directory: /MAX10_FLASH/synthesis/submodules/rtl but it appears to be binary. If it was something that could be compiled, perhaps we could get past this issue. There doesn't appear to be a similar file in the /MAX10_FLASH/simulation sub-directory.
  • Altera_Forum's avatar
    Altera_Forum
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    8 years ago

    Hi,

    I successed to solve this issue. When you run the Modelsim Simulation Tool from the Quartus software, it automatically creates a compile files *.do with all the modules available into your design.

    For the altera_on_chip_flash, Quartus points to the following files:

    vlog -vlog01compat -work e_OnChipFlash +incdir+./qsys/e_OnChipFlash/synthesis/submodules{./qsys/e_OnChipFlash/synthesis/submodules/altera_onchip_flash_util.v}

    vlog -vlog01compat -work e_OnChipFlash +incdir+./qsys/e_OnChipFlash/synthesis/submodules{./qsys/e_OnChipFlash/synthesis/submodules/altera_onchip_flash.v}

    vlog -vlog01compat -work e_OnChipFlash +incdir+./qsys/e_OnChipFlash/synthesis/submodules{./qsys/e_OnChipFlash/synthesis/submodules/altera_onchip_flash_avmm_data_controller.v}

    vlog -vlog01compat -work e_OnChipFlash +incdir+./qsys/e_OnChipFlash/synthesis/submodules{./qsys/e_OnChipFlash/synthesis/submodules/altera_onchip_flash_avmm_csr_controller.v}

    In order to have the simulation working, you have to replace the synthesis folder with the simulation in the following way

    vlog -vlog01compat -work e_OnChipFlash +incdir+./qsys/e_OnChipFlash/synthesis/submodules{./qsys/e_OnChipFlash/simulation/submodules/altera_onchip_flash_util.v}

    vlog -vlog01compat -work e_OnChipFlash +incdir+./qsys/e_OnChipFlash/synthesis/submodules{./qsys/e_OnChipFlash/simulation/submodules/altera_onchip_flash.v}

    vlog -vlog01compat -work e_OnChipFlash +incdir+./qsys/e_OnChipFlash/synthesis/submodules{./qsys/e_OnChipFlash/simulation/submodules/altera_onchip_flash_avmm_data_controller.v}

    vlog -vlog01compat -work e_OnChipFlash +incdir+./qsys/e_OnChipFlash/synthesis/submodules{./qsys/e_OnChipFlash/simulation/submodules/altera_onchip_flash_avmm_csr_controller.v}

    Best Regards,

    Daniel
  • Altera_Forum's avatar
    Altera_Forum
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    8 years ago

    Hi,

    My problem occurred because I was not using Nativelink to generate the commands for Modelsim. I tried to create a *.do file by hand and probably missed some of the flags that Nativelink creates. Once I started using that, I had no issues and did not need to edit the *.do file created by Quartus to simulate my design.