Warning (16295): Ignoring virtual IO assignment for "<signal name>" - Warning (16295): Ignoring virtual IO assignment for "<signal name>" Description The Intel® Quartus® Prime Pro edition software generates this warning during compilation when a virtual pin assigment is made to a module output that is also defined as open drain with the OPNDRN primitive. This cause the Intel® Quartus® Prime Pro edition software to ignore the virtual pin assignment. Resolution To avoid this warning, do not use virtual pin assignments on open drain outputs that uses the OPNDRN primitive. Custom Fields values: ['novalue'] Troubleshooting 22010899888 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 20.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']