Why does my 1G/10G or 10GBASE-KR PHY design fail Link Training in Verilog HDL simulation? - Why does my 1G/10G or 10GBASE-KR PHY design fail Link Training in Verilog HDL simulation? Description Due to a problem in Quartus® II software version 14.0 Intel® Arria® 10 Edition, you may see the following (or similar) warnings in simulation when Link Training is enabled. "Warning: (vsim-3533) [FOFIW] - Failed to open file 'USER_QUARTUS_INSTALLATION_PATH/acds/quartus/../ip/altera/alt_xcvr/altera_xcvr_10gbase_kr/arria10/ cpu/kra10_cpu_imem.ver' for writing." Following these warnings, Link Training will fail. Resolution To workaround this problem, perform the following steps: 1. Navigate to the directory in which the IP was generated: <USER_IP_GENERATION_DIR>/altera_avalon_onchip_memory2_140/sim/ 2. Within this directory, locate 2 Verilog HDL files with names similar to that shown below: krip_altera_avalon_onchip_memory2_140_<RANDOM_CHARACTERS>.v 3. Locate the following parameter line similar to the following in each of the files from above: parameter INIT_FILE = "/USER_QUARTUS_INSTALLATION_PATH/acds/quartus/../ip/altera/alt_xcvr/ altera_xcvr_10gbase_kr/arria10/cpu/kra10_cpu_imem.hex"; 4.) Change each parameter to: parameter INIT_FILE="kra10_cpu_Xmem.hex"; Custom Fields values: ['novalue'] Troubleshooting 2205864838 False ['Simulation'] ['FPGA Dev Tools Quartus II Software'] novalue 14.0a10 ['Arria® 10 FPGAs and SoCs', 'Arria® 10 GT FPGA', 'Arria® 10 GX FPGA', 'Arria® 10 SX FPGA'] ['novalue'] ['novalue'] ['novalue']