#!/usr/bin/env python

import string

tmpl = string.Template('''
module tb;
   reg [7:0] x;
   reg [7:0] y;
   reg [8:0] z;

   always_comb begin
     z = x + y;
   end

   initial begin
     x = 0;
     y = 0;
     #100;
     x = ${xval};
     y = ${yval};
     #100;
   end
endmodule : tb
''')

print(tmpl.substitute(xval=10, yval=200))
print(tmpl.substitute(xval=33, yval=111))