From mboxrd@z Thu Jan 1 00:00:00 1970 From: imp@bsdimp.com (Warner Losh) Date: Mon, 21 May 2018 16:22:57 -0600 Subject: [TUHS] Genealogy of PDP-11 Unix In-Reply-To: <065D3A8C-9A89-4EC8-9196-8409A5435709@ccc.com> References: <20180521202234.GA22144@minnie.tuhs.org> <065D3A8C-9A89-4EC8-9196-8409A5435709@ccc.com> Message-ID: In case people are wondering, I found this https://www.quora.com/What-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: