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


    assign has_unknown = ~all_known;

    assign bus_if_known = all_known ? bus : 8'd0;

endmodule