A restored PDP-11/83 serving this page on 211BSD Unix (pdp1173.com)
81 points by davepl 6 hours ago
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.
encom a minute 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-EUkjs3 5 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 4 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
hartjer 28 minutes ago
Has to be cached, no? Its snappy
b00ty4breakfast an hour ago
this appears to just be an ad for some webpage widget-maker.
mikerg87 5 hours ago
I posted this to twostopbits. Community over there is small but devoted to such willful acts of restoration
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.
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?
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 ?
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 4 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
dboreham 3 hours ago
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.