Why is the Global Signal CLKCTRL location assignment ignored when I use it to assign a clock to a specific periphery clock network? - Why is the Global Signal CLKCTRL location assignment ignored when I use it to assign a clock to a specific periphery clock network? Description Due to a problem with the Quartus® Prime Edition Software version 19.1 and earlier, a Global Signal CLKCTRL location assignment may be ignored with no warning message when you use it to assign a clock to a specific periphery clock network. Resolution To work around this problem, you should use a location assignment rather than a Global Signal CLKCTRL location assignment. For example, in the Intel® Quartus® settings file (.qsf), use the following assignment: set_location_assignment CLKCTRL_X0_Y74_N127 -to <clkctrl_instance_name> Custom Fields values: ['novalue'] Troubleshooting 2206125411 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 19.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']