On Tue, Feb 12, 2013 at 8:08 PM, Johnny Billquist <bqt at softjar.se> wrote: Well, the 11/70 easily outlived the 11/44, in that 11/70 machines were still sold after the 11/44 was terminated, as far as I know. Interesting data. I'm a little surprised to hear it because DEC was clearly trying to get the traditional 11/70 customer to move to the VAX line in those days. I wonder if the 70 was used in some commercial settings where they wanted a real duplicate. Unlike the Nova/Esclipe the VAX had a "compatibility mode" but it was a tad impure. The OS was different and binaries did not work with some assistance. Other than running Dungeon and few other games, I never knew a customer that used compatibility mode in production - it was a great sales tools, but once folks got their VAX they tended to do a "full port" of the code. So swapping a VAX besides costing more, meant some systems/SW work on the customers part. That was not true of the 11/44. I remember buying an 11/44 for use where we did not need (could not afford an VAX for that use) but wanted the larger address space over the 40 class machines. We had a very large 11/70 and were also buying Vaxen at the time, That particular machine was the last 11 I ever personally was part of the purchase and I moved on to other things, so I sort of stopped watching the progress of the PDP11 line. I know the QBUS gave the 11 some amount of resurgence, although by then most of us were using Vaxen or 68K based UNIX boxes. Thanks for the information. Clem