Error: Domain Error: Argument not in valid range while parameterizing Nios II/f Cores in Qsys - Error: Domain Error: Argument not in valid range while parameterizing Nios II/f Cores in Qsys Description The following error can occur in Qsys within the Quartus® Prime software while parameterizing a Nios II/f processor with a peripheral region set to 2 Gigabytes. The problem will persist even if the data cache is turned off. Error: unsaved.: domain error: argument not in valid range while executing "expr int(ceil(log($NUMBER)/log(2)))" (procedure "proc_num2sz" line 10) invoked from within "proc_num2sz $ioregionsize " (procedure "sub_validate_check_module" line 774) invoked from within "sub_validate_check_module" (procedure "validate_process" line 4) invoked from within "validate_process" (procedure "validate" line 9) invoked from within "validate" Resolution If a peripheral region of 2 Gigabytes is required, check the box to “Use most-significant address bit in processor to bypass data cache”, map the peripherals in this region, and set the Peripheral Region size to None. Please note, a data cache of some size must be enabled to change the Peripheral Region size. This problem is scheduled to be fixed is a future version of the Quartus® Prime software. Custom Fields values: ['novalue'] Troubleshooting FB: 451602; False ['Nios® II Processor'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 16.1 ['Programmable Logic Devices'] ['Nios® II Embedded Design Suite (EDS)'] ['novalue'] ['novalue']