module test(); wire [7:0] value1; wire [7:0] value2; assign value1[3:0] = 4'd2; assign value2 = value1 | 8'd1; initial begin #2 $display("%b %b", value1, value2); if (value2 === 8'bxxxx0011) $display("PASSED"); else $display("FAILED"); end endmodule