On May 29, 2018, at 10:30 AM, John Forecast via cctalk
<cctalk at classiccmp.org> wrote:
  On May 29, 2018, at 3:30 AM, Nigel Williams via
cctalk <cctalk at classiccmp.org> 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/ 
        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