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[ih] vm vs. memory

>> VM stopped being a workaround when people realized that you could use
>> the same hardware to unify RAM and disk files.
> But that's exactly what ATLAS did. The one-level paper goes into
> a lot of detail about the ATLAS o/s, and when you wrote code in
> Atlas Autocode you simply didn't know that there was both core
> and disk memory. (Atlas Autocode was my first real programming
> language, ignoring a brief flurry with Titan Autocode).

I read the paper and it looked like it just gave you a big flattish 
address space, not a file system.  Multics and TSS had file systems with 
persistent named files.