> OpenBSD supports sparc very well and is compatible with old sunos stuff (iirc)

No 32-bit sparc anymore (only UltraSPARC, aka sparc64).

No SunOS compatibility (despite Theo de Raadt inventing it for NetBSD, before being copied by other BSDs).

https://marc.info/?l=openbsd-tech&m=161435521906992&w=2

> Technically there's a niche flavour of 68k that still is supported because of a very dedicated man in Japan

luna88k, while related, is not 68k.

https://www.openbsd.org/luna88k.html

I must've read about the sunos thing somewhere and imagined it still existed.

>luna88k, while related, is not 68k

I misremembered it as being similar to the relationship between the 6502 and the 65C816