14 Jan
2002
14 Jan
'02
5:45 p.m.
On Jan 14, 14:56, Bruce Robertson wrote:
Yes, I seem to remember that with the 68000, there was
an interaction
with
the Bus Fault signal that prevented you from attaching
any kind of memory
management unit. Something to do with what state got saved on the stack;
I don't remember the exact details
Oops, I forgot about that. You're right; the 68010 saves slightly more
state on the stack than the early 68000. I have a feeling that was fixed
in later 68000; some traps save more state than others.
You can't get 68010s any more, unless you can find old stock somewhere :-(
You can still get 68000s and 68020s.
--
Pete Peter Turnbull
Network Manager
University of York