RetroChallenge

RC2024/10 entry is open during September

[RetroChallenge @retrochallenge]

New entry for RC 2025/10:
Digicool Things
Platform: Minimalist Europe Card Bus (MECB) / DREAM 6800 (6809) Project

[Eric Poch @ep00ch]

On the final stretch of @retrochallenge 2015/10!

https://t.co/yL0P81tyof

[Eric Poch @ep00ch]

RC2015/10 HalfTime update for @retrochallenge !
https://t.co/2cyXQLmZhn

[RetroChallenge @retrochallenge]

shebangs! shebangs! Louis Paul implements video mode (reminds me of Timeshock Pinball!) https://t.co/JNtUSavOEH

[RetroChallenge @retrochallenge]

decl is thoroughly documenting his Drof https://t.co/MMTwU08tvv

[RetroChallenge @retrochallenge]

Purist has an update, and is attempting to draw triangles on the R500: https://t.co/sAvWFOj9Mb

[RetroChallenge @retrochallenge]

New Entry - Robert Price: @[email protected]
Platform: RC2014
Project :  This year, I want to interface a classic Nintendo NES / Famicom joypad from 1983 to my RC2014 computer.

📷

[Mark Wickens @urbancamo]

The N-Queens problem in VAX BASIC is enough to start tripping up Claude Code! #retrochallenge https://t.co/ogQdDTuXsT

[RetroChallenge @retrochallenge]

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!

[RetroChallenge @retrochallenge]

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". 📷

[RetroChallenge @retrochallenge]

Louis has an update: https://t.co/BkJ04eEPxQ

[Adrian Franulovich @digitalrampage]

ACMS - October 2025 - Retrochallenge - Win cash and prizes! Rebuild a Mac SE/30! - https://t.co/3kZsZ9AEwc

[@mikko @mikko]

Microsoft Excel turns 40 today. This is what Excel 1.0 looked like (it was only released on Macs).

[Mark Wickens @urbancamo]

#retrochallenge I'm out of the block with my first update: https://t.co/vnlosg3iBA

[RetroChallenge @retrochallenge]

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!

[RetroChallenge @retrochallenge]

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.

[RetroChallenge @retrochallenge]

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 https://t.co/4IeHoyWkrt

[Here Be Dragons 🏴󠁧󠁢󠁷󠁬󠁳󠁿🐉 @HereBeDragons3]

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) https://t.co/gQNXEwiYI2

[RetroChallenge @retrochallenge]

@wgoodf No one will ever twitter like you Dale