history is hard

[Warner Losh]

On Sun, May 24, 2020, 11:04 AM Toby Thain via cctalk <cctalk at classiccmp.org>
wrote:

> On 2020-05-24 11:17 AM, Bill Gunshannon via cctalk wrote:
> > ... IBM was doing
> > Virtualization in the 70's.
>
> 1968 and probably before.[1]
>
> Most operating systems concepts[2] are much older than people think.
>

The topic for my talk next week. Unix had virtualization in 74. The second
Unix port ran under OS/360's VM in 78.

Warner


--T
>
> [1] https://en.wikipedia.org/wiki/History_of_CP/CMS
> [2] e.g. ref: Per Brinch Hansen, Classic Operating Systems
>
> >
> > bill
> >
>
>