Is AIS the same as AIDCS? http://vintagecomputer.net/digital/IDACS_11-07/
On Tue, May 29, 2018, 9:46 AM Paul Koning via cctalk <cctalk@classiccmp.org> wrote: > > > > On May 29, 2018, at 9:38 AM, Guy N. via cctalk <cctalk@classiccmp.org> > wrote: > > > > On Tue, 2018-05-29 at 17:30 +1000, Nigel Williams via cctalk 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/ > > > > As I recall, IAS ("Interactive Applications System") was a timesharing > > environment layered on top of RSX-11D. > > > > When I was working with RSX-11D many years ago, I heard the opinion > > expressed (maybe by DEC field service?) that RSX-11D was a pig, and IAS > > was an elephant on a pig's back. > > Sounds right to me. RSX-11/D could fit in 124 kwords, but not all that > comfortably. IAS required 22 bit addressing. RSX-11/M was apparently > created in response to that piggishness. > > I once saw an RSX-15 kernel listing, which had a lot of very familiar > looking data structures -- it implied that RSX-11/D had its origins, > at least as far as overall design is concerned, in RSX-15. > > paul > > >
