From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 29519 invoked from network); 11 Oct 2022 13:57:20 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 11 Oct 2022 13:57:20 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id 8C85140ED0; Tue, 11 Oct 2022 23:57:15 +1000 (AEST) Received: from junk.nocrew.org (junk.nocrew.org [51.15.56.219]) by minnie.tuhs.org (Postfix) with ESMTPS id 07B3840EAE for ; Tue, 11 Oct 2022 23:57:10 +1000 (AEST) Received: from localhost ([127.0.0.1] helo=junk.nocrew.org) by junk.nocrew.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1oiFkp-0003tl-Su; Tue, 11 Oct 2022 13:57:07 +0000 From: Lars Brinkhoff To: Michael Casadevall Organization: nocrew References: <7wbkqjmpdt.fsf@junk.nocrew.org> <7w35bvlydw.fsf@junk.nocrew.org> Date: Tue, 11 Oct 2022 13:57:07 +0000 In-Reply-To: (Michael Casadevall's message of "Tue, 11 Oct 2022 08:57:29 -0400") Message-ID: <7wczaylaz0.fsf@junk.nocrew.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-SA-Exim-Connect-IP: 127.0.0.1 X-SA-Exim-Mail-From: lars@nocrew.org X-SA-Exim-Scanned: No (on junk.nocrew.org); SAEximRunCond expanded to false Message-ID-Hash: EI7E2EMMJADPDQZB2CNIYE5554EYIRPN X-Message-ID-Hash: EI7E2EMMJADPDQZB2CNIYE5554EYIRPN X-MailFrom: lars@nocrew.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tuhs.tuhs.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: tuhs@tuhs.org X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: Attempting To Build NOSC and BBN UNIXs + ARPANET code List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Michael Casadevall wrote: > From what I got the impression From the docs, very early ARPA, you had > systems directly on the network, but most users had to dial into a > specific terminal machine, which, based on the comments on the RFCs, > was less than ideal Sounds like a TIP, "Terminal IMP". It was an IMP with double the amount of memory. In the upper half there was software to talk to a modem pool for dial-in access to the network. "Less than ideal", sure. Modem speeds were often 10-30 characters per second. Much more fun to sit at a video terminal next to the host. > VHD I guess was more to get more hosts online? In some cases there was an IMP which hooked up to some local hosts, but they also wanted to connect a computer that not in the same building but in the area. That's when a VDH type interface was used. > The BBN with TCP stack is a bit mislabeled: it still appears to > support NCP, but none of the client apps are there, but its directly > built off the NOSC stack. That's very good. I hope the NCP support there is in good shape. > it's probably a fork from earlier in development. 79-80 timespawn > would have been *very* early in TCP's life TCP had been underway since 1973. Experiments called "TCP bakeoffs" started around 1979. > > Pluribus IMP emulator, anyone? > > I do actually wonder how hard that would be. I'm not sure. I have the impression the Pluribus computer isn't well documented. It might not be too hard to write an IMP replacement from scratch.