<div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jun 14, 2019 at 3:52 PM Richard Bennett <<a href="mailto:richard@bennett.com">richard@bennett.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="overflow-wrap: break-word;">The PARC Ethernet that immediately preceded Blue Book was 2.94 Mbps, not 3. The difference is greater than the bandwidth of ARPANET at the time. I think an even earlier prototype was 1 Mbps. </div></blockquote><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Right... in both cases. One of the guys (Roger Bates IIRC), even calculated the number of bit of storage in the PARC network >>wires<< at one point. </div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="overflow-wrap: break-word;">These were both thin coax systems as thick net was a Blue Book designed-by-committee monstrosity with poor noise modeling.</div></blockquote><div><span class="gmail_default" style="font-family:arial,helvetica,sans-serif">Amen....</span></div><div><span class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></span></div><div><span class="gmail_default" style="font-family:arial,helvetica,sans-serif">A question for you: Was the ARCnet you are describing from Datapoint, the same technology as the 75 ohm coax ARCnet that was popular with Novell networks in the mid to late 1980s? I remember it was originally less costly than the 'Blue Book' ethernet per port until NS and group came up with 'CheaperNet' (running it across 50 ohm wire thin wire and using BNC connectors).</span> </div><div><br></div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="overflow-wrap: break-word;"><div><br></div><div>RB</div><div><br><div><blockquote type="cite"><div>On Jun 14, 2019, at 6:43 AM, Noel Chiappa <<a href="mailto:jnc@mercury.lcs.mit.edu" target="_blank">jnc@mercury.lcs.mit.edu</a>> wrote:</div><br class="gmail-m_-3227224952991069579Apple-interchange-newline"><div><div><blockquote type="cite">From: Jorge Amodio<br></blockquote><br><blockquote type="cite">Thank you so much for your detailed response<br></blockquote><br>Indeed, it was a fantastic and fascinating glimpse into a too-little-known<br>corner of computing history.<br><br>For those who would like to know more, in addition to online sources, I can<br>recommend "Datapoint: The Lost Story of the Texans Who Invented the Personal<br>Computer Revolution", by Lamont Wood. (I'm not sure if those who were there,<br>like Mr. Peterson, would consider it accurate, but it seemed to be to be quite<br>good.)<br><br>Typical nugget: the Intel 8008 was not a descendant of the Intel 4004<br>(although the production chips did use technology developed for the 4004), as<br>commonly thought at one point; rather, it was developed for Datapoint<br>(although they wound up building their own CPU out of discrete components).<br>The 8008 developed into the 8080, and then the 8086... and I expect many of us<br>are reading this on its descendants.<br><br><blockquote type="cite">I'll follow up on a private message so I don't get the rest of the list<br>bored with details.<br></blockquote><br>Bored? Never! :-)<br><br><br><blockquote type="cite"><blockquote type="cite">On Thu, Jun 13, 2019 at 6:18 PM Gordon Peterson <<a href="mailto:gep2@terabites.com" target="_blank">gep2@terabites.com</a>> wrote:<br></blockquote></blockquote><br><blockquote type="cite"><blockquote type="cite">(...and, at the time, Ethernet.... which wasn't a released product yet...<br>was running at just 2 megabits<br></blockquote></blockquote><br>Minor nit - 3.<br><br><blockquote type="cite"><blockquote type="cite">"Oh, Gordon," my colleagues told me. "It's a good system, but you're<br>crazy... big businesses will never give up their mainframes and run their<br>processing on networks of little computers."<br>I grinned at them and replied, "You just WATCH!" :-)<br></blockquote></blockquote><br>I suspect many people on this list have had similar experiences! (In my case,<br>circa mid-80s, telling my now-wife that one day everyone would have<br>email... :-)<br><br>It would be interesting to collect stories about when we got glimpses of the<br>future. I am particularly thinking of Craig's story about Swedish train<br>timetables; my equivalent was going home to Bermuda at one point and seeing<br>URL's painted on commercial vehicles.<br><br> Noel<br>_______<br>internet-history mailing list<br><a href="mailto:internet-history@postel.org" target="_blank">internet-history@postel.org</a><br><a href="http://mailman.postel.org/mailman/listinfo/internet-history" target="_blank">http://mailman.postel.org/mailman/listinfo/internet-history</a><br>Contact <a href="mailto:list-owner@postel.org" target="_blank">list-owner@postel.org</a> for assistance.<br></div></div></blockquote></div><br><div>
<div style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><div style="overflow-wrap: break-word;">—<br><div style="overflow-wrap: break-word;">Richard Bennett<br><a href="http://hightechforum.org" target="_blank">High Tech Forum</a> Founder</div><div style="overflow-wrap: break-word;">Ethernet & Wi-Fi standards co-creator</div><div style="overflow-wrap: break-word;"><br></div><div style="overflow-wrap: break-word;">Internet Policy Consultant</div></div></div>
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