history is hard

[Bill Gunshannon]

On 5/24/20 1:04 PM, Toby Thain via cctalk 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.
> 
> --T
> 
> [1] https://en.wikipedia.org/wiki/History_of_CP/CMS
> [2] e.g. ref: Per Brinch Hansen, Classic Operating Systems
> 
>>
>> bill
>>
> 

I only picked 70's because I used VM370 on a 4331 in 1980
and it was a mature product already then.

bill