29 May
2018
29 May
'18
7:10 a.m.
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 at classiccmp.org>
wrote:
On May 29, 2018, at 9:38 AM, Guy N. via cctalk
<cctalk at 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 at 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