On 6/19/19 10:20 PM, Ethan Dicks via cctalk wrote: > 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. >
V6 will run on an LSI-11/02 with 28KW of memory. bill