From mboxrd@z Thu Jan 1 00:00:00 1970 From: reed@reedmedia.net (Jeremy C. Reed) Date: Fri, 1 Sep 2017 20:51:41 -0500 (CDT) Subject: [TUHS] What was the first edition of UNIX that left AT&T In-Reply-To: <6A1D6BAF-E3B4-4DA2-B198-FD0929232A83@ccc.com> References: <20170831232738.GA1273@minnie.tuhs.org> <6A1D6BAF-E3B4-4DA2-B198-FD0929232A83@ccc.com> Message-ID: > > On Sep 1, 2017, at 7:16 PM, Clem cole wrote: > > > > Interesting. If O'Malley had a connection wonder what it was > > connected too on both sides. It had to be to lbl but the Vdh was a > > piece of shit even in the ingvax days. The first version was even > > worse. On the ucb side I wonder. It would not have been Unix > > because UofI did the original arpanet code and that was for v6. > > There was never a pdp10 at ucb so I wonder if it was one of the CDC > > machines which were the primary systems until Unix came to be. Regarding the ARPA network at UCB, see ARPANET Completion Report at http://walden-family.com/bbn/arpanet-completion-report.pdf PDF page 199 "ARPA NETWORK, LOGICAL MAP, SEPTEMBER 1973" shows LBL with 316-based IMP. The next page (June 1974) shows it (LBL IMP) linked with UCB with a PDP-11 "v". I don't know the key for "v" but maybe means "very distant host" as defined in Report 1822 Appendix F (PDF page 151 at http://walden-family.com/impcode/BBN1822_Jan1976.pdf ), If that is what it is, the BBN 1822 Section F.3.4 suggests "[e]ither an EIA RS232C interface or the special Bell 303 [modem] interface can be used. Speeds up to 230.4 kilobits/second are permitted. ... At the Host site there will be a mating full-duplex modem." "UCB" was removed from the Oct. 1976 map, but it still shows a PDP-11 "v" link. And the remote link removed from map in March 1977. Allman told me the INGRES link was a "VDH (Very Distant Host) interface, which was essentially a 9600 baud modem that took up most of a rack, plus a rather large card that plugged into the UNIBUS on the PDP-11." He also told me the Unix v6 Arpanet code was from San Diego. (I still don't know about the earlier connection but I assume was not on Unix.)