Why does Fixed Point Dedicated Pre Adder with sub direction is not inferred for unsigned multiplier inputs? - Why does Fixed Point Dedicated Pre Adder with sub direction is not inferred for unsigned multiplier inputs? Description This problem can be seen when using Multiply Adder FPGA IP with the following settings: Preadder direction set to SUB Multiplier inputs set to UNSIGNED This is due to multiplier inputs must be signed when the preadder is performing subtraction. Resolution To avoid this problem, ensure that multiplier inputs are set to SIGNED when using SUB preadder direction. Custom Fields values: ['novalue'] Troubleshooting 1508656768 False ['Multiply Adder IP'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 20.3 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']