# DF-4728 — PoC evidence pack

**Finding:** AC97 codec access busy-waits (au_rdcd ~0.35 s/reg, au_wrcd
100 ms/reg), writes-through on timeout, and always reports success.

## Contents
- `VERDICT.md` — budget math, path:line, impact.
- `verdict.json` — machine verdict (status: untested; Info/hardening).
- `fix.diff` — capped budget + skip-write-on-timeout.

## Reproduce / Expected
Requires an AU8820 card with a wedged codec. Static analysis only.