qq_41137205的博客

module top_module( input [399:0] a, b, input cin, output cout, output [399:0] sum ); wire [99:0] temp; bcd_fadd add0(a[3:0],b[3:0],cin,temp[0],sum[3:0]); genvar i; generate for(i=4;i<400;i=i+4) begin: add45