--- Tony Duell <ard_at_p850ug1.demon.co.uk> wrote:
> Not even close IIRC. The 68451 is an MMU. I've only seen it as the 64 pin
> DIP version, again in the XXX (which has 3 64 pin chips on the CPU board
> (aka 'Stickleback'!) -- the 68000, 68450 and 68451.
Must have been some sort of Motorola reference design. The Software
Results "Node Box" I mentioned has a DIP 68451, too. We never got
the software that far advanced, so I have a DIP socket, wired to
bypass the MMU. Just drop it in, and the system works without
memory management.
It is listed as obsolete by Motorola because it is _not_ compatible
with the later, and more common, 68851 that was used with the 68020.
-ethan
=====
Visit "The Seventh Continent"
http://penguincentral.com/penguincentral.html
__________________________________________________
Do You Yahoo!?
Yahoo! Auctions - buy the things you want at great prices
http://auctions.yahoo.com/
Received on Sat Apr 28 2001 - 09:24:16 BST