44. Bus Error Checker

How do you plan to solve it?

module error_checker_xz(
    input  [7:0] bus,
    output reg all_known,
    output reg has_unknown,
    output reg [7:0] bus_if_known
);

always @(*) begin
    // Default assignments (avoid latches)
    all_known    = 1'b0;
    has_unknown  = 1'b0;
    bus_if_known = 8'h00;

    // Check if bus has any X or Z
    if (^bus === 1'bx) begin
        // ^bus reduces bus bits using XOR; if any bit is X/Z, result is X
        has_unknown  = 1'b1;
        bus_if_known = 8'h00;
    end 
    else begin
        all_known    = 1'b1;
        bus_if_known = bus;
    end
end

endmodule