Virtual memory

[Roger Holmes]

> From: Dave McGuire <mcguire at neurotica.com>
> 
>>> I'm not familiar with the B5000 implementation (did I miss it in the
>>> thread already?), but I did try to avoid restricting the def to that
>>> of paging.
>> 
>> The B5000, circa 1961 was an amazing bit of equipment.  Read about it
>> here, then compare with later systems.
>> 
>> http://www.ajwm.net/amayer/papers/B5000.html

The above says the first delivery was in 1963. I believe that is the date which matters. Ideas and plans for computers are around for a long time before they come to fruition and can maybe be traced back for many years but the one date you can rely on is when a customer accepted a machine as working to its specification and paid for it.



According to:

http://www.chilton-computing.org.uk/acl/literature/news/1962.htm

the Ferranti Atlas was working at Manchester University in 1962. I understand it had virtual memory. I wouldn't have wanted to pay for the quarter megawatt electricity bill !