module safe_div8 (
input [7:0] dividend,
input [7:0] divisor,
output [7:0] q,
output [7:0] r,
output div_by_zero
);
// TODO: implement with ternary (?:)
assign div_by_zero=(divisor=={8{1'b0}})?1'b1:1'b0;
assign q=(div_by_zero==1'b1)?1'b0:dividend/divisor;
assign r=(div_by_zero==1'b1)?1'b0:dividend%divisor;
endmodule