Re: How to protect 65816's 16MB Memory?

[et472@FreeNet.Carleton.CA (Michael Black)]

Eric Smith (eric@brouhaha.com) writes:
> Matthew Russotto writes about MMUs:
>> I'm not sure when they become commonplace on
>> processors (as opposed to external units,
> 
> The first mainstream processors with integrated MMUs were the Intel 386 and
> the Motorola MC68020, introduced in 1885 and 1987, respectively.  Both
> had paged memory management.
> 
The 69020 did not have a built-in MMU.  It had more address lines (the
68000 had the core to address as much memory, but didn't bring the pins out),
and could better deal with co-processors.  There was an MMU and a math
coprocessor introduced to go with it.

This is why my Mac LC will not run Linux, it has no MMU.  That SUN computer
someone gave me that has a 68020 has an external MMU so it can.

So it would arrive internally with the 68030.

      Michael