1 Nov
2010
1 Nov
'10
8:51 a.m.
On Sat, Oct 30, 2010 at 6:51 AM, Johnny Billquist <bqt at softjar.se> wrote:
On 2010-10-30 01:12, Ethan Dicks<ethan.dicks at
gmail.com> wrote:
Yes. I was previously unaware of the distinction but did know what
the 68000 could not do that the 68010 could.
I know it works well enough in early Sun
workstations and the AT&T
Unix PC (3B1/7300), but I have no knowledge of any required
workarounds due to possible bugs.
Yes, the 68010 worked fine with demand paging. The 68000 did not.
Neither of them implemented instructions restarts, though. As noted below,
the 68010 did instuction suspension instead. The "interesting" workarounds that I've
hear of are actually 68000-related...
Using their own designed MMU (there were none from
Motorola for the 68000),
What about the 68451? (we had one in a prototype product design in
1984/1985 that never made it to market)
It wasn't terribly popular, but it did exist.
and a second CPU, Apollo made the primary CPU stall on
a page fault, and the
secondady CPU wake up. The secondary CPU could then do a page in...
That sounds like the design of the Perkin-Elmer workstation I have -
two 68000s, one for running the OS, one for paging.
-ethan