44. Bus Error Checker

How do you plan to solve it?

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


assign has_unknown  =  (^bus===1'bx);
assign all_known    =  (~has_unknown);
assign bus_if_known =  (has_unknown) ? 8'b0 : bus;

endmodule