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RetroChallenge @retrochallenge

RC2024/10 entry is open during September

Joined June 2008
  • Tweets 584
  • Following 133
  • Followers 684
115 Photos and videos
New entry for RC 2025/10: Digicool Things Platform: Minimalist Europe Card Bus (MECB) / DREAM 6800 (6809) Project
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RetroChallenge retweeted
Eric Poch@ep00ch
28 Oct 2025
On the final stretch of @retrochallenge 2015/10! retrochallenge.org/2025/10/o…

On the Final Stretch!

We are on the final stretch of RC2025/10, with awesome progress and great writeups, videos, and photos. Here are highlights of recent update...

retrochallenge.org
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RetroChallenge retweeted
Eric Poch@ep00ch
20 Oct 2025
RC2015/10 HalfTime update for @retrochallenge ! retrochallenge.org/2025/10/r…

RC2025/10 HalfTime Update!

Here is your RC2025/10 HalfTime Update! Everyone, except me, has made awesome progress already. This is a seriously impressive group of cont...

retrochallenge.org
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shebangs! shebangs! Louis Paul implements video mode (reminds me of Timeshock Pinball!) hackaday.io/project/204138-u…

Implementing the Video Mode | Details | Hackaday.io

I'll describe the development progress of the 2048 game on Midway 8080 hardware. For the video mode I'm using 8-bit tile-based structure with no scrolling and no sprites. I added 8x8 basic font with...

hackaday.io
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decl is thoroughly documenting his Drof drof-computox.blogspot.com/
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Purist has an update, and is attempting to draw triangles on the R500: r500.idk.st/
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New Entry - Robert Price: @robertprice@mastodonapp.uk Platform: RC2014 Project :  This year, I want to interface a classic Nintendo NES / Famicom joypad from 1983 to my RC2014 computer. 📷
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RetroChallenge retweeted
Mark Wickens@urbancamo
4 Oct 2025
The N-Queens problem in VAX BASIC is enough to start tripping up Claude Code! #retrochallenge urbancamo.github.io/retrostu…

Retrochallenge 2025/10

Online Documentation

urbancamo.github.io
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Don't forget to post your updates on X and tag us either as @retrochallenge or #retrochallenge and we will re-tweet-x-whatever for you!
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New entry from purist - Project :  Radeon R500 will be 20 years old as of 05 October 2025, so it now qualifies for Retro Challenge. The primary/minimal project goal is "draw a triangle on a Radeon R500 via direct memory-mapped hardware register and texture memory accesses". 📷
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Louis has an update: hackaday.io/project/204138-u…
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RetroChallenge retweeted
Adrian Franulovich@digitalrampage
2 Oct 2025
ACMS - October 2025 - Retrochallenge - Win cash and prizes! Rebuild a Mac SE/30! - mailchi.mp/86935c36f93f/acms…
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RetroChallenge retweeted
@mikko
@mikko
30 Sep 2025
Microsoft Excel turns 40 today. This is what Excel 1.0 looked like (it was only released on Macs).
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RetroChallenge retweeted
Mark Wickens@urbancamo
1 Oct 2025
#retrochallenge I'm out of the block with my first update: urbancamo.github.io/retrostu…
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LambdaMikel: Previously, I built a graphics card for the MPF-1B. So far it has done text output and Mandelbrot fractals. For RC2025/10, I want to see a rotating 3D cube on it!
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decle is first out of the block: I'll attempt to reverse engineer and document The Drof Computox, an electro-mechanical noughts and crosses machine. It seems to have been built by a hobbyist from telephone exchange parts perhaps at some point in the 1960s.
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And we're back for another month of madness! If you want to be a part of RC2025/10 fill in the form for a place docs.google.com/forms/d/e/1F…

RetroChallenge Sign Up

Submit your information here to sign up for the RetroChallenge!

docs.google.com
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Can't have too much green! Or can you? Come and see my table at the Retro Computer Festival and find out (and bring sunglasses) computinghistory.org.uk/det/…

The Loud Scots Bloke@loudscotsbloke
24 Oct 2024
6847 loveliness.
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This is what I've been up to: installed Solaris 2.6 under qemu and then WordPerfect 6.0/5.2 for Unix - I have a full box including the required serial number!
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