From mboxrd@z Thu Jan 1 00:00:00 1970 From: lars at nocrew.org (Lars Brinkhoff) Date: Fri, 31 Jul 2020 15:32:21 +0000 Subject: [COFF] [TUHS] Will pdp 11/04 run unix? In-Reply-To: <20200731135637.8BC2818C0C0@mercury.lcs.mit.edu> (Noel Chiappa's message of "Fri, 31 Jul 2020 09:56:37 -0400 (EDT)") References: <20200731135637.8BC2818C0C0@mercury.lcs.mit.edu> Message-ID: <7wlfizk8e2.fsf@junk.nocrew.org> Noel Chiappa wrote: > Hmmm. My memory was that it was an -11/05-10 (they are identical, > except for the paint on the front panel; and I don't recall it in > enough detail to say), but perhaps I'm wrong? I couldn't say for sure. I have seen conflicting information in sources dating from the 70s when the TV-11 and XGP-11 were very much in use. For several reasons, I believe the TV-11 was the first machine attached to the 10-11 interface, and the XGP-11 came second. This would lend some weak support for the theory that the first would be a 11/20 and the second a 11/10. > Or maybe it was an -11/20 early, and then it got replaced with an > -11/10? (I have a _very_ vague memory that the XGP's -11 was a /20, > bur I wouldn't put much weight on that.) Replacing or changing machines around would explain the confusion, but I haven't seen anyone remembering such events, or any written record to support that. > Moon or TK or someone might remember better. I did bring it up with TK at some point. He said the TV-11 must have been a 11/20, because at the time there was no other PDP-11 model available. But as far as I can see from file timestamps, the AI lab TV project was started in 1973 or so when the 11/10 would have been shipped.