From: Paul Ruizendaal <pnr(a)planet.nl>
a token ring driver (written by Noel Chiappa, if I
remember well).
No (unless they took one I wrote for the V6 machine and adapted it); I never
did anything on any Unix after V6 (I think there's nothing of any significant
interest in any later Unix).
Anyway, writing a driver for that board would be about as much work as
writing a driver for an RK11 controller - i.e. a day or so for someone
competent.
Noel