VHDL Post-Fit Simulation Failure on Stratix V Devices - VHDL Post-Fit Simulation Failure on Stratix V Devices Description This problem affects DDR2, DDR3, QDR II, and RLDRAM II products. Error messages similar to the following may occur when running post-fit simulation of VHDL designs: # ** Error: /<project_path>/example_project/simulation/modelsim/myDDR3_example.vho(32614): (vcom-1136) Unknown identifier "test_mode". # ** Error: /<project_path>/example_project/simulation/modelsim/myDDR3_example.vho(32615): (vcom-1136) Unknown identifier "use_duty_cycle_correction". # ** Error: /<project_path>/example_project/simulation/modelsim/myDDR3_example.vho(71612): (vcom-1035) Formal port "clkin" has OPEN or no actual associated with it. # ** Error: /<project_path>/example_project/simulation/modelsim/myDDR3_example.vho(183112): (vcom-1136) Unknown identifier "test_mode". # ** Error: /<project_path>/example_project/simulation/modelsim/myDDR3_example.vho(183113): (vcom-1136) Unknown identifier "use_duty_cycle_correction". # ** Error: /<project_path>/example_project/simulation/modelsim/myDDR3_example.vho(225095): (vcom-1136) Unknown identifier "test_mode". # ** Error: /<project_path>/example_project/simulation/modelsim/myDDR3_example.vho(225096): (vcom-1136) Unknown identifier "use_duty_cycle_correction". # ** Error: /<project_path>/example_project/simulation/modelsim/myDDR3_example.vho(237040): VHDL Compiler exiting . Resolution The workaround for this issue is to modify the post-fit netlist, as follows: Open the post-fit netlist file <core_name>.v ho in a text editor. Locate and remove the following parameter declaration for stratixv_leveling_delay_chain : test_mode => "false" use_duty_cycle_correction => "false"� Ground the clkin port of stratixv_pll_dll_output : clkin => "0000" Ground the tdoutap port of stratixv_jtag : tdoutap -> ‘0’ This issue will be fixed in a future version. Custom Fields values: ['novalue'] Troubleshooting novalue True ['Simulation'] ['FPGA Dev Tools Quartus II Software'] 12.0.1 12.0 ['Stratix® V FPGAs'] ['novalue'] ['novalue'] ['novalue']