Why does the provided v11.0 Qsys Simulation for AN431 fail to compile correctly? - Why does the provided v11.0 Qsys Simulation for AN431 fail to compile correctly? Description The v11.0 Stratix® IV Qsys simulation provided with AN431 fails to compile if the instructions are followed on page 27 of the application note, as the provided msim_setup.tcl file does not match the required path locations if installed to the default location. To workaround the issue, follow the instructions below: Open the provided Quartus® II project, default location is: C:\altera\11.0\examples\qsys_pcie_ddr3\hip_gen2_x4_ddr3\s4gx_qsys_pcie_ddr3_64bit_533MHz\s4gx_qsys_pcie_ddr3.qpf Launch Qsys, then open the provided Qsys project, default location is: C:\altera\11.0\examples\qsys_pcie_ddr3\hip_gen2_x4_ddr3\s4gx_qsys_pcie_ddr3_64bit_533MHz\q_sys.qsys Switch to the "Generation" Tab, don't change anything, and simply click "Generate". This will regenerate the required files, specifically it will create a msim_setup.tcl file specific for your own library locations. When Qsys generation is completed, close Qsys and Quartus® II. Launch ModelSim® Change Directory to the \q_sys\testbench\ folder At the ModelSim command prompt, type do msim_setup.tcl For ModelSim SE 6.6d, type ld, then run -all For ModelSim AE 6.6d, type ld_debug, then run -all The simulation should then run correctly. Resolution Custom Fields values: ['novalue'] Troubleshooting novalue False ['Simulation'] ['FPGA Dev Tools Quartus II Software'] novalue 11.0 ['Stratix® IV GX FPGA'] ['novalue'] ['novalue'] ['novalue']