Qbus split I&D?

Noel Chiappa jnc at mercury.lcs.mit.edu
Mon Mar 16 08:58:39 CDT 2015

    > 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! :-)


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