Impressively long support. OpenBSD dropped support for i486 in 6.8, a bit under 5 years before Linux did (Oct 18, 2020). This happened when it was decided to ensure 64-bit atomics were always available.
21 comments a couple days ago: <a href="https://news.ycombinator.com/item?id=43928570">https://news.ycombinator.com/item?id=43928570</a>