On Wed, Jun 19, 2019 at 9:23 PM Bob Smith via cctalk <cctalk@classiccmp.org> wrote: > My recollection, Unix on the 11 started with the 20 but because of the > limited capabilties, it really was done on the /45.
The good stuff, yes, but it was still recognizable on the 11/20... https://github.com/jserv/unix-v1 > > unix developed on 11/20 with 20 on panel or machine that just said pdp/11? Based on comments from Ken Thompson at his keynote at VCF East this year, just "PDP-11" (he specifically asked if anyone in the audience had ever touched _that_ version, no "/20"). > The three rings or 3 execution levels were not supported on the > original machine. Sure but v1/v2 UNIX was a lot simpler than v5. -ethan
