glen.slick at gmail.com
Fri Jul 3 19:09:44 CDT 2015
On Jul 3, 2015 4:59 PM, "Johnny Billquist" <bqt at update.uu.se> wrote:
> I find it hard to believe it was a plain 68K in there. That CPU have some
serious issues that makes it close to impossible to implement virtual
memory or proper usermode protection.
> (Yes, it can be done, but the amount of hardware required means most did
not. I think SUN did it with their own MMU, and an extra CPU in there.
Trying to remember who else - I seem to remember one other company who
actually used a plain 68K, and it was not Unisys.)
Apollo is the classic example of using plain 68K (two).
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