The PDP-8/e’s RK05 cleaned up and booted OS/8 just fine. Here it is loading up ADVENT for tonight’s event.

icm.museum

#vintagecomputing #retrogaming #retrocomputing

We’re ready for this evening!

https://icm.museum

#vintagecomputing #retrocomputing

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A thinking machines cm2

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A ka10

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The pdp12

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A cm2 processor card

The Interim Computer Festival FALL 2025 is this weekend October 4th and 5th at INTRASPACE from 10am - 6pm each day. This is a free event. Exhibitor registration will close soon.

https://sdf.org/icf

#free #event #seattle #vintagecomputing #retrocomputing #pnw

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A flyer poster by k8e for the Interim Computer Festival FALL 2025

Saturday we got one of the Symbolics LISP Machines up and running along side the Thinking Machines Connection Machine.

would you like to help us and learn more?

https://icm.museum

#retrocomputing #vintagecomputing #ai #hpc #hypercube #lisp

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A person with a lisp machine

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A person with a lisp machine and cm2

Hacked barebones string support into Palo Alto TinyBasic.

It is now possible to input a string with IN$, then access its characters as $(0), $(1), ...

As in the original language, there is no way to convert a numeric character code back to a character and display it on the screen. (Yet!)

#basic #retrocomputing

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ENTER STRING <user enters HELLO, seen at the bottom of the screen> STARTS WITH 72 69 76 OK

It is nice when a program's author leaves a source comment with well-wishes for future readers, and they are received almost 50 years later.

https://archive.org/details/dr_dobbs_journal_vol_01/page/n143/mode/1up

#retrocomputing #basic

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CHAR 'YOU MAY NEED THIS SPACE TO' CHAR 'PATCH UP THE I/O ROUTINES,' CHAR 'TO FIX UP BUGS, OR TO ADD' CHAR 'MORE COMMANDS AND FUNCTIONS.' CHAR 'SKY (SPACE) IS THE LIMIT.' CHAR 'GOOD LUCK AND GOOD BYE.' CHAR 'LICHEN WANG, 10 JUNE 76'

I just published v0.98 of #jSH, a #JavaScript scripting environment for #MSDOS. This is the 'little' text-mode brother to #DOjS.

- updated curl, mbedTLS and zip

https://github.com/SuperIlu/jSH

#RetroComputing
#FreeDOS
#DJGPP
#RetroDev
#RetroDevelopment

it’s getting there! help us at https://icm.museum to support the Thinking Machines Connection Machine re-animation journey!

#hypercube #supercomputer #ai #bigdata #retrocomputing #vintagecomputing #gpu

Come see us light up the Thinking Machines CM-2 on Thursday October 2nd just before the Interim Computer Festival weekend!

https://icm.museum

#supercomputing #hypercube #gpu #retrocomputing #vintagecomputing

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Thinking machines CM2

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Thinking machines CM2

My favorite #BootManager for MS-DOS and Win 9x systems:

https://btmgr.sourceforge.net/download.html

#RetroComputing #MSDOS #win9x

#EuroBSDCon #RunBSD #Retrocomputing #Fanboi #StarStruck

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Marshall Kirk McKusick, Eric Allman, a couple of (much) younger BSD developers and myself hovering over an old open-frame PC build which is busy booting NetBSD. Sponsor pull-up poster for Entersekt/Modirum (my employer) in the background.

I'm going to be talking about C compilers and DOS at my next retrocomputing event and I'm going to hand out "quick reference" style cards to anybody that passes by. Here is my first draft; what am I missing that I should include?

(I'm targeting an index card for these, so space is limited.)

#retrocomputing #dos

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C Programming in DOS Tips quick reference card draft.

Our precursor tech room features electromechanical machines from the 1950s and 1960s

https://icm.museum

#retrocomputing #vintagecomputing #em #electromechanical

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A teletype, a card sorter and a key punch

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A teletype, a card sorter and a key punch

I'm going to be participating at the next Interim Computer Festival in Seattle in two weeks. Here is the banner for the table that I'm having printed.

https://sdf.org/icf/

October 4th and 5th, Seattle

#retrocomputing #dos

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Banner for ICF - "C programming in DOS is fun. Change my mind."

Join us on ssh lcm3b2@bitzone.sdf.org in 'com' from the Vintage Computer Festival MidWest today!

#chat #vcfmw #retrocomputing #vintagecomputing #retrogaming

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a list of remote systems in an ascii menu

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a stack of remote systems

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The running remote systems at Interim Computer Museum

Here we go again, #EuroBSDCon! I may have mentioned it, but it's really happening*: I'm giving a talk again, this time titled:

Dirty Tricks: Using #nginx and #Lua to thwart bots and skript kiddies

This talk is specifically for anyone who

• has tried to host a BBS on the Internet,
• is struggling with scrapers and bots,
• lives in the #RetroComputing bubble,
• wants to see an early '90s PC on stage,
• needs a telnet captcha, or
• simply has nothing better to do.

Read more about it here, take a look at the conference schedule, and buy your ticket!

See you there!

#FreeBSD #Security #BSD #RunBSD #DOS #RunDOS #TheDraw #AnsiArt

* I didn't want to post this until I was fairly certain I could even pull this off..

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Introduction screen from my talk, presented in ANSI art. The words "nginx" and "LUA" in large ANSI fonts in the top left and bottom right corners, with some of the text from the talk description (linked in the post) in the middle.

X-Mailer: PMMail/2.20.2717

Phishing emails sent from an OS/2 box?

#phishing #retrocomputing #OS/2

I recently built an original Pentium 60MHz system, built on an ECS motherboard. Around the same time I received a "mystery" VGA card: A Matrox MGA Impression ISA card. And since most of my builds are "open builds" and therefore easily accessible, that machine got the pleasure of becoming the test bench for the Matrox.

As already revealed, the Matrox performs atrociously bad. So bad, in fact, that I had to test a couple other ISA cards to make sure it wasn't a system issue. I used my go-to benchmarking tool #3DBench from Phil's DOS Benchmark Pack. I really don't want to experience Doom with this card..

And without further ado, the contestants and their results in this spur-of-the-moment benchmark run:
- Baseline: A 32-bit PCI S3 Virge/DX based card with 4MB RAM: A perfectly workable 48.2
- The low-end Trident TVGA9000C with 512KB RAM (this is a real garbage card): A pretty shitty 14.2
- The mid-range Cirrus Logic CL-GD-5422 with 1MB RAM (this is a decent card, know for compatibility but not necessarily speed): A barely bearable 24.7
- And finally, the "star" of the show, the Matrox: A whopping 10.9!

I said it was atrocious, didn't I? But hey, I'm gonna use this one with #OS2 anyway, so who cares about DOS performance, right? ;)

#RetroComputing #Benchmarks #VGA #SlowVGA

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Montage: Close-up of the S3 card installed in the system, next to picture of the 3DBench result

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Montage: Picture of the Trident (a small ISA card) next to picture of the 3DBench result

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Montage: Picture of the Cirrus Logic (small ISA card) next to picture of the 3DBench result

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Montage: Picture of the Matrox (a very large full-length ISA card) next to picture of the 3DBench result

I recently built an original Pentium 60MHz system, built on an ECS motherboard. Around the same time I received a "mystery" VGA card: A Matrox MGA Impression ISA card. And since most of my builds are "open builds" and therefore easily accessible, that machine got the pleasure of becoming the test bench for the Matrox.

As already revealed, the Matrox performs atrociously bad. So bad, in fact, that I had to test a couple other ISA cards to make sure it wasn't a system issue. I used my go-to benchmarking tool #3DBench from Phil's DOS Benchmark Pack. I really don't want to experience Doom with this card..

And without further ado, the contestants and their results in this spur-of-the-moment benchmark run:
- Baseline: A 32-bit PCI S3 Virge/DX based card with 4MB RAM: A perfectly workable 48.2
- The low-end Trident TVGA9000C with 512KB RAM (this is a real garbage card): A pretty shitty 14.2
- The mid-range Cirrus Logic CL-GD-5422 with 1MB RAM (this is a decent card, known for compatibility but not necessarily speed): A barely bearable 24.7
- And finally, the "star" of the show, the Matrox: A whopping 10.9!

I said it was atrocious, didn't I? But hey, I'm gonna use this one with #OS2 anyway, so who cares about DOS performance, right? ;)

#RetroComputing #Benchmarks #VGA #SlowVGA

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Montage: Close-up of the S3 card installed in the system, next to picture of the 3DBench result

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Montage: Picture of the Trident (a small ISA card) next to picture of the 3DBench result

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Montage: Picture of the Cirrus Logic (small ISA card) next to picture of the 3DBench result

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Montage: Picture of the Matrox (a very large full-length ISA card) next to picture of the 3DBench result

Received these in the mail today. Haven't had a Norwegian OS/2 box since the early 90s! And the one on the right is the somewhat rare Norwegian "OS/2 2.1 for Windows 3.1" on CD-ROM - if it isn't on archive.org yet it will be soon. :)

Edit: Fixed alttext; only the 2.1 box is "for Windows", meaning they don't include Windows but use the license and files you presumably already have.

#RetroComputing #OS2 #WhereDidMyMoneyGo

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One boxed OS/2 Warp, one OS/2 2.1 "for Windows 3.1". Both in Norwegian. The 2.1 box is significantly larger than the Warp box.

Charles hacking through an intermittent single bit error on the PDP-7a getting closer to the problem.

https://icm.museum

#unix #vintagecomputing #retrocomputing #hardware #hacking

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Charles hacks away on the PDP-7a chasing a single bit error

This feels like a scene from an adventure puzzle game created by @lardmotel just needs more bunnies and planes.

#phosphors #lights #vintagecomputing #retrocomputing

something is happening

https://icm.museum

#lisp #vintagecomputing #retrocomputing

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A CM2 and its lisp machine front end

Finally I can ditch my tired old Sparc station, and switch to #Windows like everyone else!

Introducing SSH2WIN a port of SSH2DOS to #16bit Windows. No win32s here!

This was both harder and easier than I thought it would be.

Official release coming soon, once I clean up some details.

#retrocomputing

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A screenshot of a Windows 3.11 session. On the session there is a blue window with Qbasic showing the gorillas.bas source code. There is also a clock, mspaint, and the focal point is a window labeled "SSH2WIN - SSH Client For Windows". The SSH client is showing "neofetch" on a Fedora 42 system.

Not quite ready to run but it’s in progress.

#retrocomputing #lisp #vintagecomputing

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A symbolics 3670

My PCjr forum is basically getting DDoS'ed by IP addresses that point back to Tencent. It looks like AI bots scraping everything.

I got tired of playing whack-a-mole and I restricted access to the site for anonymous users. The instructions for joining now have a blurb about the Tiananmen Square massacre just in the case the great firewall can help me. And I'm aggressively blocking large subnets.

Does anybody have good tools for blocking by ASN ?

#retrocomputing

I don’t usually promote personal projects here, but I’ll give it a try.
Meet Tocaia, a minimalist, cross-platform TUI Gopher client written in C89 for POSIX systems.
It even supports Haiku.
Pull requests and bug reports are welcome! =)
https://github.com/manipuladordedados/tocaia

#gopher #TUI #haikuos #FreeBSD #NetBSD #OpenBSD #smolweb #retrocomputing #programming