Internal Error: Sub-system: U2B2_CDB, File: /quartus/db/u2b2/u2b2_nf_lab_ibr_module_lcb.cpp, Line: 498 - Internal Error: Sub-system: U2B2_CDB, File: /quartus/db/u2b2/u2b2_nf_lab_ibr_module_lcb.cpp, Line: 498 Description Due to a problem in the Intel® Quartus® Prime Standard Edition software version 17.1 and earlier, you may see the error above during Fitter stage in the compilation. Resolution This problem is fixed beginning with the Intel® Quartus® Prime Standard Edition software version 18.0. Custom Fields values: ['novalue'] Troubleshooting 2205666247 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Standard'] 18.0 17.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']