> From: Pete Turnbull > 2.9BSD doesn't need split I&D, but 2.11BSD does. Doesn't 2.11 also need Supervisor mode (at least, for the networking code)? Of course, there is not (AFAICR) any machine with split I&D but not Supervisor, so the question above is purely intellectual, not of practical consequence. (Unless you have an 11/xx with an Able ENABLE board! :-) Noel