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Inside the AS/400: Second Edition
Hardware & DIY
Author: Frank G. Soltis
Hacker News 1
Avaliable on Amazon
The AS/400 (or whatever they call it now) had an approach like that. Everything was on disk and RAM was just a cache of disk. That also meant every "object" had an address and could be accessed by any process with suitable permissions. There are lots of other things they do, with a
different approach than Unix, Windows etc.
Frank Soltis' book is recommended reading:
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