> On May 29, 2018, at 1:04 PM, Paul Koning <paulkon...@comcast.net> wrote: > > > >> On May 29, 2018, at 10:30 AM, John Forecast via cctalk >> <cctalk@classiccmp.org> wrote: >> >> >>> 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/ >> >> Yes. The two V3.4A tapes will allow you to build either RSX-11D or IAS. > > Wow, I did not know that. It certainly confirms that IAS is just a slightly > hacked RSX-11/D... > > paul > >
My first job in Maynard was project lead for DECnet-11D & DECnet-IAS (Phase II). It was basically the same source code for both, just separate builds since they were released as separate distributions. Later versions consolidated the releases into a single kit. The V3.4A tapes will claim to be running IAS but, if you select the “Real-Time” options during sysgen you’ll get the familiar MCR> prompt: 1920K (word) IAS Version 3.4A Baselevel 3414 SAV -- Partition GEN expanded by 57472 words MOUNT-**Volume Information** Device =DB0 Class =File 11 Label =IASSYS UIC =[1,1] Access =[RWED,RWED,RWED,RWED] Charac =[] MOUNT -- DB0 ** Mount Complete ** 20-NOV-90 12:15:53 Date and time, please? MCR> IIRC, IAS development in Reading was done mostly on an 11/45. The 2.0 SPD confirms that IAS was supported on 11/45, 55 and 60 but only with 2 active terminals. John.