Re: What were the first models to support Dual Address Space?

2021-01-03 Thread WILLIAM H BLAIR
| Does anybody remember the first models to support | Dual Address Space for MVS/SP Version 1? I'd like | to add that to the wiki [[IBM System/370]] article. In hardware, it was the 3033 (as well as the 3042 Attached Processor), as well as a hardware assist MES for the 3031. It was also, of co

Re: S/360

2019-04-11 Thread WILLIAM H BLAIR
On April 11, 2019 at 4:29 PM Mike Myers wrote: | an experience I had sometime back around 1967. | Nearby at another system was Don Ludlow, who | was reputed to be the primary designer of IOS | for OS/360. Donald Ludlow WAS indeed the principal author of OS/360 IOS. In fact, he wrote ALL of the