Alpha CPUs, was Re: [rescue] i860 Success

Phil Stracchino alaric at
Mon May 3 18:22:54 CDT 2004

On Mon, May 03, 2004 at 07:13:48PM -0400, Andrew Weiss wrote:
> On May 3, 2004, at 4:34 PM, Geoffrey S. Mendelson wrote:
> >BTW, IMHO the most important microprocessor chip was the 80386. It's
> >combination of support for virtual memory and a flat address space
> >made affordable UNIX, and it's children e.g. the 386 BSDs, Linux, etc
> >a reality.
> IMHO the 68K would have done the same thing had the 386 not been around.

Someone correct me please if I'm wrong, but didn't the MC68000 have flat
address space before the i80386 did?  And the 68k's address space was
flat by *default*, you didn't have to switch it into protected mode.

(However, I don't personally know whether the 68000 supported virtual

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