module DW_square_inst( inst_a, inst_tc, square_inst ); parameter width = 8; input [width-1 : 0] inst_a; input inst_tc; output [(2*width)-1 : 0] square_inst; // Instance of DW_square DW_square #(width) U1 ( .a(inst_a), .tc(inst_tc), .square(square_inst) ); endmodule