I think that the 3/50 was a "single board"
VME system... and as you say
you really couldn't add anything to it.
IIRC the only way to add anything to it was to pull the processor from its
socket, plug in a daughterboard, and then plug the processor back into that.
It did feel a whole lot more responsive with that extra 8MB of memory!
--
George D M Ross MSc PhD CEng MBCS CITP, University of Edinburgh,
School of Informatics, 10 Crichton Street, Edinburgh, Scotland, EH8 9AB
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