Hacker News

Top stories

Live mirror
30 storiesupdated just nowView source snapshot
  1. What Sun got wrong(dtrace.org ↗)
    190comments
  2. Turn off and restrict access to Apple Intelligence features on Mac(support.apple.com ↗)
    31comments
  3. Attention is all you have(alicegg.tech ↗)
    95comments
  4. Grok 4.7(x.ai ↗)
    260comments
  5. Fable 5 – Median thinking declined in August(twitter.com/lon ↗)
    133comments
  6. Avoiding the babbling-idiot failure in a time-triggered communication system(ieee.org ↗)
    1comments
  7. Python Workers are now generally available(cloudflare.com ↗)
    12comments
  8. Why Does an NPM Math Library Need an Encrypted Loader?(safedep.io ↗)
    discuss
  9. This Digital Radio Gets Messages to the World’s Remotest Locations(ieee.org ↗)
    22comments
  10. Advisory Group on Mathematics and Artificial Intelligence(openai.com ↗)
    10comments
  11. Kev: Tiny Jev-like family of decision models built on top of Qwen3.5(github.com/jaredpalmer ↗)
    153comments
  12. A restored PDP-11/83 serving this page on 211BSD Unix(pdp1173.com ↗)
    21comments
  13. US halts flights at busy East Coast airports, says fiber line cut(reuters.com ↗)
    8comments
  14. How do Traffic Signals Work (2019)(practical.engineering ↗)
    20comments
  15. Amazon blocks Meta’s new Muse AI agent from shopping on amazon.com(forbes.com/sites/jonmarkman ↗)
    82comments
  16. Grim Fandango Puzzle Document (1996) [pdf](jmac.org ↗)
    75comments
  17. What happened to the Snowden archive(libroot.org ↗)
    456comments
  18. Noodle Gallery- Open-source, self-hosted alternative to Google Photos and Immich(digitalescapetools.com ↗)
    20comments
  19. AX – Google’s Open Agentic Orchestrator(agentexecutor.io ↗)
    283comments
  20. M5 Ultra Mac Studio Review(macstories.net ↗)
    156comments
  21. Whirlpool Washer Transmission Repair (2007)(k0lee.com ↗)
    25comments
  22. macOS 27: Workaround to avoid downloading AI models and save storage(reddit.com ↗)
    70comments
  23. Help 404 Media Find Out How Your Local Police Are Surveiling You(404media.co ↗)
    1comments
  24. Samsung is expected to more than double output of its HBM4 and HBM4E DRAM(sedaily.com ↗)
    422comments
  25. Heretic removes restrictions from language models(heretic-project.org ↗)
    74comments
  26. Raspberry Pi blocks changing RAM chips(raspberrypi.com ↗)
    139comments
  27. Apple Mac mini review(arstechnica.com ↗)
    48comments
  28. Show HN: Lossless-memory – a personal AI memory that never summarizes(github.com/aru-labs ↗)
    15comments
  29. Show HN: Mini-AGI – Dynamic continual learning model trained on 8GB VRAM(github.com/volotat ↗)
    50comments
  30. ZuckOff is a free app that sees Meta glasses before they see you(wired.me ↗)
    313comments

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

54 pointsby 3h agopdp1173.com
21 comments
The box is a restored Q-bus PDP-11/83 named minerva: Mentec M11 CPU, two chassis tied with M9404/M9405, RQDX3, 2xEmulex UC07, KDA50, RLV12, DEQNA, M3104. Storage is RA82 + dual RA92, MFM boot/swap, dual RL02, RX50s, and a TKZ50. OS is 2.11BSD.

The live panel is top. /cgi-bin/webtop is the raw snapshot.

A 16-bit httpd will not survive the front page, so Varnish/Caddy/Cloudflare cache the HTML and a 5-second webtop sample. Origin is still the 11 itself, and it handles all of the webtop and visitor count requests.

Telnet exists (pdp1173.com, guest) but it is a 40-year-old UNIX with no modern security story. Please do not treat it as a challenge box; I can restore from tape, but that ruins it for everyone else.

Happy to answer Mentec, MSCP, Q-bus, or 2.11BSD questions.

To get BSD running on the Mentec, I had to customize the BSD kernel to use FPSIM, as the Mentec supports IEEE floating-point and NOT the DEC formats.

2h agoHN ↗

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.

2h agoHN ↗

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

1h agoHN ↗

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.

1h agoHN ↗

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.

1h agoHN ↗

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?

1h agoHN ↗

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

1h agoHN ↗

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".

1h agoHN ↗

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

58m agoHN ↗

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!)

6m agoHN ↗

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

2h agoHN ↗

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

2h agoHN ↗

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

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

1h agoHN ↗

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

1h agoHN ↗

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.

57m agoHN ↗

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

17m agoHN ↗

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