A restored PDP-11/83 serving this page on 211BSD Unix

(pdp1173.com)

82 points | by davepl 7 hours ago

14 comments

  • kjs3 6 hours ago

    Please do not treat it as a challenge box; I can restore from tape, but that ruins it for everyone else.

    Unfortunately, for a disturbing percentage of the Internet, ruining things for everyone else is the goal. I'd turn off telnet.

    • dwedge 5 hours ago

      A PDP-11 serving adverts for an AI-written site in 2026 was not on my bingo card. Imagine being brought back from the dead for that.

      • nancyminusone 4 hours ago

        Unfortunately, this is just Dave "I wrote Task Manager" Plummer's handwriting.

        • ok123456 3 hours ago

          Dave "fake antivirus software scammer" Plummer

          https://www.atg.wa.gov/news/news-releases/attorney-general-s...

          • kev009 2 hours ago

            Wow. I can't imagine the thought process of going from accumulating a decade of Microsoft shares and experience during a pivotal era and deciding to plow it into a consumer scam op.

            • for some reason, the tech industry attracts these types like flies to...well, you know the saying. They aren't the majority of folks drawn to tech but outside of maybe finance, it seems to be their preferred habitat.

              it's their raison d'être to Always Be Conning

      • this appears to just be an ad for some webpage widget-maker.

        • hartjer 1 hour ago

          Has to be cached, no? Its snappy

          • encom 40 minutes ago

            >A restored PDP-11/83 serving this page on 211BSD Unix

            No it isn't.

              ~$ whois $(dig +short pdp1173.com | head -n1) | grep netname
              netname:        CLOUDFLARENET-EU
            • davepl 13 minutes ago

              It is though. Dig deeper.

            • mikerg87 5 hours ago

              I posted this to twostopbits. Community over there is small but devoted to such willful acts of restoration

              https://twostopbits.com/item?id=9970

              • sph 3 hours ago

                What in the AI slop is this website? Looks like it's trying to get me to download malware.

                • dboreham 3 hours ago

                  Dave Plummer definitely isn't AI.

                  • dallen33 3 hours ago

                    He isn't, but nearly everything he puts out there is AI produced. His video thumbnails look awful, and that task manager he built for macOS is fully AI coded. Not saying it's a bad thing, but I dunno it's kinda all ugly looking to me.

                    • davepl 10 minutes ago

                      Every pixel is where I put it, so that's all that matters to me. If it's ugly, it's intentionally so. AI had no input into designing the visuals or UX.

                • jmbwell 5 hours ago

                  I love it. My PDP-11 has some fault that keeps it blowing fuses. Emulators don’t feel the same. Real hardware doing the work, well done

                  • varjag 3 hours ago

                    Fantastic build.

                    Do you know by any chance a source for Q-Bus edge sockets?

                    • wrs 3 hours ago

                      What is the giant blinkenlight panel on the right?

                      • davepl 12 minutes ago

                        There's an 11/70 panel at the top of the rack; it's emulated (but a real panel). Below that are the two chassis of 11/83, which has a panel of its own from Joerg Hoppe.

                      • frumplestlatz 5 hours ago

                        Thanks for keeping the spirit of the old internet alive :)

                        I hope you won’t have to restore it from tape!

                        • hinkley 3 hours ago

                          How about a nice game of chess?

                          • budman1 5 hours ago

                            as of 12 noon CST, it pings but does not telnet.

                            • mlmonkey 5 hours ago

                              Why is the domain `pdp1173.com` when the machine is a PDP 11/83 ?

                              • davepl 9 minutes ago

                                Because it started as a 15Mhz 11/73 but I later upgraded it to an 18MHz 11/83 CPU. And now it's a Mentec M1, but it's still an "83 class" machine. That's my thinking, anyway.

                                • ktm5j 5 hours ago

                                  There's a couple eyebrow raising things about this post.. like the fact that there's nothing but vague details in text and one photo with an AI prompt like alt-text. I think they're just trying to get clicks for that banner ad.

                                  • roryirvine 5 hours ago

                                    Sadly, the site does seem AI-flavoured to a rather off-putting extent.

                                    And, as you say, the details are so vague - it's exactly what you might expect if an LLM wrote them based on reading a spec sheet rather than any practical experience.

                                    In particular, connecting that DEQNA to a modern network must have been a huge challenge all in itself and I'd have expected there to be a series of blog posts about just that. Maybe it's legit (and I'd love more detail if it is), but right now the presentation screams "thinly disguised ad".

                                    • spijdar 4 hours ago

                                      I think he has actually posted videos of the restoration before (they've popped up in my youtube feed in the past), but I've never watched them, so dunno. The LLM site design and advertisement front-and-center are certainly a... choice....

                                      But, more importantly, why do you reckon DEQNA would be hard to connect to a modern network? NetBSD still supports it when running on a q-bus VAX: https://github.com/NetBSD/src/blob/trunk/sys/dev/qbus/if_qe....

                                      It has some pretty broken behavior regarding multicast/broadcast traffic IIRC, but nothing putting it behind a vlan or separate LAN altogether wouldn't solve. I've got a little lsi-11 system under my bed I'm hoping to, one day, get the Fuzzball [0] distribution running on. The 22-bit address extension wirewrap the previous owner did needs to be redone entirely, so it's been a "later" project for years now, but I am hoping my little DEQNA will be able to ping the Internet still.

                                      [0] https://en.wikipedia.org/wiki/Fuzzball_router

                                      • roryirvine 4 hours ago

                                        I was assuming that something of that vintage would only have been able to handle a 10BASE5 transceiver, but a wee bit of googling suggests that an UTP transceiver works well enough.

                                        Needs a patched ROM and recompiled kernel, though! See http://www.cosam.org/computers/dec/pdp11-23/20080402.html (and the two subsequent installments)

                                        (That cosam.org site is more what I'd be expecting for a project like this, but maybe I'm just too old and grumpy for my own good!)

                                      • dboreham 3 hours ago

                                        Dave posts frequently about his work, some on YouTube and some on Facebook. You have to be in the right groups on FB.

                                        • ktm5j 1 hour ago

                                          You and several other people here are making unsubstantiated claims about how you're super sure this is real in a way that makes it seem less real. You guys seem to know this Dave character and are doing him a solid, right?

                                          • dcminter 51 minutes ago

                                            Dave Plummer's a well known YouTuber. He pops up in a couple of DEC groups that I'm in on Facebook. However I'm not a fan. He seems to take a lot and contribute only self-promotional videos.

                                            The photo on this page looks very AI heavy. I'm not an expert but I really don't think those light panels are real (if they're real they're not contemporary to the machines they're in).

                                            (Edit: I should qualify that I don't mean the panel with the octet switches, that looks roughly right - I mean the one under the 8" disks and the one on the vaguely Vax-pedestal looking thing)

                                      • cube00 5 hours ago

                                        While probably it's legit because I've seen Dave discussing the process on the YT channel (which I no longer watch) he unfortunately does have form https://news.ycombinator.com/item?id=39813625

                                        Having TMOG on a .org when it sells commercial licences doesn't sit well with me given the history.

                                        • davepl 11 minutes ago

                                          FWIW, .com was taken so I registered .org, and it's only used for the free version. The PRO version lives at tmog.store, which should be pretty plain.

                                          • roryirvine 4 hours ago

                                            Oh, yeah - this popped up on HN yesterday too and also met with scepticism: https://news.ycombinator.com/item?id=49772362

                                            Oh well, so this PDP restoration probably isn't real. Disappointing.

                                            • davepl 11 minutes ago

                                              "Probably isn't real". Interesting theory.

                                              • dboreham 3 hours ago

                                                What's not real about it?

                                              • ktm5j 5 hours ago

                                                I'm a little confused by your comment.. especially considering the fact that you edited it and changed the link from and old comment thread from 2024 to whatever this dead post is from 2012. What does having form mean? Who is Dave?

                                                • cube00 5 hours ago

                                                  Sorry, lost the last digit, fixed now. This restored PDP-11/83 project is Dave Plummer's