From mboxrd@z Thu Jan 1 00:00:00 1970 From: imp@bsdimp.com (Warner Losh) Date: Mon, 21 May 2018 16:53:07 -0600 Subject: [TUHS] Genealogy of PDP-11 Unix In-Reply-To: References: <20180521202234.GA22144@minnie.tuhs.org> <065D3A8C-9A89-4EC8-9196-8409A5435709@ccc.com> Message-ID: OK. So I should ignore it then... Thanks for the clarification... Warner On Mon, May 21, 2018 at 4:48 PM, Clem Cole wrote: > @Warner Losh - the picture with the blue balloons is so wrong.... There > are a ton of errors, starting with claiming PWB 1.0 came from Fifth Edition > > On Mon, May 21, 2018 at 3:22 PM, Warner Losh wrote: > >> In case people are wondering, I found this https://www.quora.com/Wha >> t-is-Unix-and-why-is-it-important which contains a blue-oval chart that >> shows it being derived from CB Unix 3. But that the sources were also >> different than the ones for VAXen, etc. At least that's the implication >> here. Is this chart in error? >> >> Warner >> >> >> On Mon, May 21, 2018 at 2:30 PM, Clem cole wrote: >> >>> It contains Features from CB Unix but was not the same thing. In >>> particular shared memory and semaphores were contributed by Dale’s team but >>> it was PWB 3.0 that was rebranded system III and then updated and released >>> by USG aka summit eventually as sys V. System IV was not released outside >>> the bell system I’m not sure if it ever went out inside. >>> >>> Sent from my PDP-7 Running UNIX V0 expect things to be almost but not >>> quite. >>> >>> > On May 21, 2018, at 1:22 PM, Warren Toomey wrote: >>> > >>> > I had an e-mail from someone who said: >>> > >>> > PDP-11 Sys V is apparently derived from Unix CB 3.0, not from the >>> > normal route... Or so says the great interweb :) >>> > I found a family tree that suggests this. Know anything about this? >>> > >>> > I hadn't heard of this before, can anybody substantiate or negate this >>> > assertion, or shed more light on the genealogy od PDP-11 System V? >>> > >>> > Thanks, Warren >>> >> >> > -------------- next part -------------- An HTML attachment was scrubbed... URL: