44. Bus Error Checker

How do you plan to solve it?

/*Write your code here*/
module error_checker_xz(input [7:0]bus, output all_known, output has_unknown , output [7:0]bus_if_known);

 
   assign has_unknown = (^bus === 1'bx);
   assign all_known  = ~has_unknown;

   assign bus_if_known = (has_unknown) ?  8'h00 : bus;


endmodule