On Sat, Oct 13, 2007 at 03:30:25PM -0700, tim Rowledge wrote:
The OS was a version of Helios (eek, I still have a copy of the Helios manual in my bookshelf!) which I think started out life as TripOS at Cambridge (the real university, not the US) as a multi- processor system using messaging, or something like that. It was wrapped in a unix-like layer to please the unix-weenies.
Martin Richards provides a current implementation of the Tripos environment that runs as an interpreted guest (under Linux or whatever). It is called "Cintpos" and is available at: http://www.cl.cam.ac.uk/~mr10/Cintpos.html
Cintpos is implemented in BCPL: http://www.cl.cam.ac.uk/~mr10/BCPL.html
These and other interesting artifacts are at Dr Richards' home page at Cambridge: http://www.cl.cam.ac.uk/~mr10/
Dave