43. Guard Division by Zero

Build a combinational divider that avoids simulation x from divide-by-zero. If the divisor is zero, clamp outputs to zero and raise a flag.

Requirements

• Module: safe_div8
• Inputs: dividend[7:0], divisor[7:0]
• Outputs:
  • q[7:0] — unsigned quotient
  • r[7:0] — unsigned remainder
  • div_by_zero — 1 if divisor==0, else 0
• Behavior:
  • If divisor == 8'd0: q=8'd0, r=8'd0, div_by_zero=1'b1
  • Else: q = dividend / divisor, r = dividend % divisor, div_by_zero=1'b0
• Pure combinational RTL (no delays).