Fw: The LispOS Project: a position paper, part 2
William A. Barnett-Lewis
Tue, 03 Jun 1997 09:24:55 -0500
> > From: Scott L. Burson <email@example.com>
> > I do understand the attraction of having "Lisp down to the metal" (a goal
> > Lisp Machines never quite reached, by the way, because of their use of
> > microcode). But it's a massive amount of work to do well...
> The LMI K-machine -- designed, built, debugged, but never marketed --
> was Lisp down to the metal. There was *no* microcode, and all but
> about 64 lines of critical interrupt code (that handled the pipeline
> crawlout) was written in Lisp. The effort was in fact large, on the order
> of 10 man years and 1 million dollars from initial concept to working
> (Pretty cheap, actually, but more than I have in my pocket today.)
You've mentioned your work on the K-machine a few times now, esecially
in the context of lisp all the way down. Is there any reference to this
work that is available? Could you, perhaps, put together a short paper
explaining the basis hackery involved? Could you also explain the
differences between LMI's approaches and those of the other companies as
well? I'm most familer with Xerox D-Machines, sort of with Cons/Cadr &
Symbolics, but know virtualy nothing about the LMI machines.
PS the list seems to be working wrt you again. Excellent!