VCS Simulation Fails and Reports that Module was Previously Declared - VCS Simulation Fails and Reports that Module was Previously Declared Description If you set VCS as your simulator and attempt to simulate your high-performance controller II (HPC II)-based design with NativeLink, the VCS simulation fails and reports that the module was previously declared. This issue affects all high-performance controller II (HPC II)-based IP designs with ALTMEMPHY. Compilation fails in VCS. Resolution The workaround for this issue is to perform the following steps, before running the simulation: Open the < variation_name >.v file in an editor. In the < variation_name >.v file, find the following text: // IPFS_FILES: <files list>; Remove the entire file list by replacing the text located in step 2 with the following text: // IPFS_FILES: ; This issue will be fixed in a future version. Custom Fields values: ['novalue'] Troubleshooting novalue True ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 11.0 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']