Why is the JTAG user code greyed out in the Device and Pin Options pane? - Why is the JTAG user code greyed out in the Device and Pin Options pane? Description Due to a problem in the Intel® Quartus® Prime Pro Edition Software v21.2, the JTAG user code is greyed out in the Device and Pin Options pane even if you uncheck Auto user code . Resolution To work around this problem, modify the JTAG user code by using the following assignment: set_global_assignment -name STRATIX_JTAG_USER_CODE <JTAG user code> This problem is fixed beginning with v21.3 of the Intel® Quartus® Prime Pro Edition Software. Custom Fields values: ['novalue'] Troubleshooting 1509600732 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 21.3 21.2 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']