unix developed on 11/20 with 20 on panel or machine that just said pdp/11?

[Bill Gunshannon]

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 at 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