The Quartus II software does not fully support reg and logic SystemVerilog keywords - The Quartus II software does not fully support reg and logic SystemVerilog keywords Description The Quartus II software supports reg and logic SystemVerilog keywords (and, for Verilog, reg ) only to indicate the power-up value of a register. reg and logic are not supported for other purposes (for example, to pass a value to other hierarchies). Resolution In contexts other than indicating the power-up value of a register, use wire .For more information, refer to Recommended HDL Coding Styles in volume 1 of the Quartus II Handbook . Custom Fields values: ['novalue'] Troubleshooting novalue True ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 10.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue'] - 2021-08-25