Re: Memory Protection

[walra%moacs11@relay.NL.net (Waldi Ravens)]

In <m0pea2r-0000oEC@sdf.lonestar.org>, Evan K. Langlois writes:

>   On a totally unrelated issue, I think the fork should be non-blocking,
> using the slow memory copy method used in MINIX (only so that the call
> accomplishes the same on an 030 for a consistent interface), but use the
> MMU on the 030.  Why can't an MMu be added to the 68000?  It should be
> possible I think.

No, it ain't. You need at least an 68010. The 68000 lacks the ability to
continue an instruction following a memory fault. The 68010 can continue
the instruction after correcting the condition that caused the fault.


Regards,
           Waldi  (walra%moacs11@nl.net)