> On May 29, 2018, at 3:30 AM, Nigel Williams via cctalk
> <cctalk@classiccmp.org> wrote:
>
> On Tue, May 29, 2018 at 1:27 AM, Al Kossow via cctalk
> <cctalk@classiccmp.org> wrote:
>> I have 11D on bitsavers.
>
> this is actually RSX-11D? http://bitsavers.org/bits/DEC/pdp11/magtapes/ias/
IAS is basically RSX-11/D under the covers, with some minor tweaks and with a
sort of timesharing added. If I remember right that involved a new type of
partition where memory was managed more dynamically. I worked on Typeset-11
which was written for RSX-11/D and then ported to IAS, where the timesharing
part was left out since we had no use for it. So the "port" didn't involve any
real change, not even for drivers.
At one point DEC pushed to retire RSTS/E and replace it with IAS; that notion
was a miserable failure because IAS timesharing wasn't nearly as good.
paul
