When did Memory- and IO Protection Emerge (Esp. in Minis)?

[Erik Baigar]

On Fri, 6 May 2016, Tor Arntsen wrote:

> On 5 May 2016 at 10:41, Mattis Lind <mattislind at gmail.com> wrote:

[snip]

> minicomputer with up to 64kw of core memory.  The NORD-1 reference

[snip]

> alteration. The optional features guarantees that protected areas of
> memory cannot be written into. The protection feature also prevents
> the execution of instructions that could initiate I/O transfers or
> change the status of the protection system."

OK, this machine also matches the requirements of my initial
question - great. So there quite some machine offering such
features well before 1975...

Thanks for citing from the reference manual!

    Erik.