module safe_div8 (
input [7:0] dividend,
input [7:0] divisor,
output [7:0] q,
output [7:0] r,
output div_by_zero
);
assign q = (divisor==8'd0)?8'd0:dividend/divisor;
assign r = (divisor==8'd0)?8'd0:dividend%divisor;
assign div_by_zero = (divisor==8'd0)?1:0;
endmodule