On Thu, Jun 30, 2016 at 3:59 PM, Joerg Schilling <schily@schily.net> wrote:
Dan Cross <crossd@gmail.com> wrote:

> Still, the point that the 68451 MMU was pretty lame is well taken. The
> segment table was too small (96 entries?) and it was clearly designed to
> support segmented memory rather than paging. It is inadequate to the latter
> task. The 68851 available for the 68020 got it right; supposedly this could
> be used with the 68010 as well, but I don't know that anyone ever tried
> that in a real product.

We at H.Berthold AG in Berlin did manage to use 12 68451 in parallel for our
virtual UNOS variant.

Sorry, I was referring to using a 68851 with a 68010; I'd imagine that by the time the 68851 was appearing in new designs, it was paired with the 68020.

Wow. *12* 68451s? That's pretty wild.