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Posts by David Youd

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Breaking Enigma with Index of Coincidence on a Commodore 64 Breaking Enigma without known plaintext using statistical analysis on the Commodore 64.

A cool project from @mrdoornbos.bsky.social
imapenguin.com/2026/03/brea...

1 day ago 3 2 0 0

I just managed to order one! WooHoo!

1 day ago 0 0 0 0
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How do you kill a Supercomputer?



(Accidentally) using radioactive solder is a good way.



IBM’s Blue Gene/L frequently crashed when running simulations at LLNL.



Turned out that alpha particles from the lead solder in the board carrier were slamming the L1 cache with bit flips.

6 days ago 123 17 7 3
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Tower And Dragon Version 4.0 Retro Game Retro 2d adventure game that utilizes one of the first personal computers: A 1977 Commodore PET 8K. Playable on modern computers too!

The kickstarter just went live today. An impressive 8K RPG for the PET. Includes box and cloth map. <3 www.kickstarter.com/projects/tow...

1 month ago 1 1 0 0
What ears care about (it's not 256 Hz vs 261.63 Hz tuning)
What ears care about (it's not 256 Hz vs 261.63 Hz tuning) YouTube video by David Youd

My latest short: youtube.com/shorts/kXzG7...

1 month ago 2 0 1 0
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Trying out this old keyboard peripheral on the #C64ultimate ... Little bit of 'Sonic' from my daughter ❤️

1 month ago 35 4 1 0
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2 months ago 1 0 0 0
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This store is giving away GTA 6 for free – if you have a baby on release day - Dexerto A Norwegian electronics company is promising to give away free copies of GTA 6 to parents who manage to give birth on the day that the game releases.

www.dexerto.com/gta/this-sto...

2 months ago 0 0 1 0
Can AI Find the RNG in Bard’s Tale (C64)?
Can AI Find the RNG in Bard’s Tale (C64)? YouTube video by David Youd

Some AI 8-bit reverse engineering
www.youtube.com/watch?v=sLWf...

2 months ago 4 1 0 0
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Enigma machine replica reveals disappointing secret
Enigma machine replica reveals disappointing secret YouTube video by David Youd

Got a new toy today. :)
www.youtube.com/shorts/71jwc...

2 months ago 0 0 0 0
C64 Demos peek - The Hat - Up, Up, and Away! - The balloons part
C64 Demos peek - The Hat - Up, Up, and Away! - The balloons part YouTube video by Martin Piper's mostly Commodore related memories

I look at #Commodore64 demo "The Hat" by Fairlight and Genesis Project, specifically the part with the "14 balloon sprites" in a row and its "hires" scrolling border message.
youtu.be/DyteWLEPKzE

2 months ago 6 3 0 1
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Online #Zork I through III, but with an #LLM that replaces the normal input parser: infocom.tambo.co
For instance, I just typed a prompt, and it translated it into two zork commands:

2 months ago 2 0 0 0
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"It Was Exciting & Terrifying" — The Ultima Legend Who Taught Computers To Sing Kenneth W. Arnold reflects on his work on the groundbreaking RPG series

New Ken Arnold interview: www.timeextension.com/features/it-...

3 months ago 2 2 0 0
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All it takes to run Factorio off 1,000 floppies is to code your own file system and a week to load the game A masochistically manual gaming experience for the automated AI age.

A writeup: www.pcgamer.com/hardware/run...

3 months ago 1 0 1 0
I beat Factorio on 1,000 Floppy disks.
I beat Factorio on 1,000 Floppy disks. YouTube video by DocJade

Remember having to swap disks all the time on 8-bit RPGs? Well, this 21-year-old beat the modern (2020) game Factorio, after converting the game to an unfathomable disk-swapping hell of over 1,000 floppies: www.youtube.com/watch?v=cTPB...

3 months ago 3 2 1 0
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Then you need a Dr. Theopolis

3 months ago 4 0 0 0
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GitHub - Martijn-DevRev/Ultimate64MCP: MCP server for the Ultimate 64 series mainboards and cartridges MCP server for the Ultimate 64 series mainboards and cartridges - Martijn-DevRev/Ultimate64MCP

Of course, someone has already AI- #MCP -wrapped the new #C64Ultimate:
github.com/Martijn-DevR...

3 months ago 0 0 0 0
Tower And Dragon 4.0 Trailer
Tower And Dragon 4.0 Trailer YouTube video by Jason Cook

A new 8K PET RPG: youtu.be/dzSJlNHcFME

3 months ago 1 0 1 0
Dragon's Eye: Exploring an EPYX PET-Era RPG
Dragon's Eye: Exploring an EPYX PET-Era RPG YouTube video by David Youd

An early #Commdore #PET RPG worth exploring: Dragon’s Eye ( #EPYX, 1981)
youtu.be/jJfGN4Zeb7M

3 months ago 5 3 1 0
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> What is this?
The Commodore 64 came out 43 years ago. Recently, fans purchased the IP and resurrected the company. Brand new C64 "ultimate"s (they do cool stuff) are rolling off the assembly lines. A bunch of 50-year-olds are reliving their favorite childhood Christmas this year. :)

3 months ago 1 0 1 0
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With the cat :)

3 months ago 2 0 2 0
https://vice-emu.sourceforge.io/NEWS * About this file ================= This file lists the most important user-visible changes for each official release of VICE. For the gory details, please use the subversion history: $ svn log htt...

Change log: vice-emu.sourceforge.io/NEWS

3 months ago 0 0 0 0
VICE - the Versatile Commodore Emulator Homepage of VICE - the Versatile Commodore Emulator

Another Christmas Gift, a new version of VICE just dropped: vice-emu.sourceforge.io

3 months ago 7 4 1 0
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Release Retro Debugger v0.64.74 · slajerek/RetroDebugger Retro Debugger v0.64.74 Bug fixed: VIC Display bitmap/text Y pixel line was off 1 pixel (thanks to Brush/Elysium for reporting) Bug fixed: VIC Editor screen may become blank when view is not displa...

New version of Retro Debugger just dropped today! #c64 #reversing
github.com/slajerek/Ret...

3 months ago 6 4 0 0
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Just arrived!

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Reverse engineering a 'tony' 6502-based game console
Reverse engineering a 'tony' 6502-based game console YouTube video by Poking Technology

David Given uses #ghidra to explore a new 6502-based toy (bypassing some "security" in the process): www.youtube.com/watch?v=jJ0X...

4 months ago 2 1 0 1
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@burgerbecky.bsky.social Portland Vintage Gaming Conference 2018:

5 months ago 2 0 0 0
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Rebecca Heineman
October 30, 1963 – November 17, 2025
rest in peace

Here's a pic I took at VCF-W in 2022:

5 months ago 3 1 1 0

If you'd like to msg Becky Heineman, now is the time

5 months ago 1 0 1 0

Becky, I'm so blessed that you made time to sit and talk with me at VCF-W a few years ago. I loved hearing about the creative things you did and your approach to problem solving. Place yourself in God's hands who is ready to receive you. You are loved and will be remembered fondly by all. <3

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