On Wed, Aug 28, 2019, 12:27 PM Warner Losh <imp@bsdimp.com> wrote:


On Wed, Aug 28, 2019, 11:57 AM Doug McIlroy <doug@cs.dartmouth.edu> wrote:

> How long was research running on a PDP-11 and when did they move to a VAX?

London and Reiser had ported Unix to the VAX, replete with virtual memory, in 1978. By the time v7 was released (1979), Vaxen had become the workhorse machines in Research.


Is there a paper on this work?

Found the 32V paper, but this was still a swapping implementation if I'm reading correctly. I thought that the virtual memory was added by BSD / Bill Joy. That would explain why V8 was BSD 4.1 based, since it was the first usable Vax port with VM.

Warner