On 4/9/21 1:02 PM, Earl Baugh wrote:
> And the original CPU boards didn’t have an MMU.
wrong
They didn't have a 68010 capable of recovering from page faults
The original unix shipped on Sun 1's was a Unisoft port. The same
one sold by several other companies that sold the original Sun CPU
design.l
Right on both counts - his base/limit MMU even had a small PID/Context register which was pretty slick at the time. The MMU I created with Roger Bates for the Tektronix Magonia was not that smart and when I first saw it I did a face plant -- why didn't I think of that.