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David Shadoff

@dshadoff.bsky.social
1.1K followers 66 following 1.1K posts

Mostly PC Engine and PC-FX reverse-engineering and development. I also contribute to MiSTer FPGA cores and a Mednafen fork. (hobby).

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David Shadoff @dshadoff.bsky.social · 3h
I feel like it's gotten to the point where I need to add the following label to all my repositories: "Designed and built using only the finest hand-made, artisanal code"
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David Shadoff @dshadoff.bsky.social · 26/09/2026
Seeing all the AI makers' press releases about their agents "escaping" and causing harm makes me wonder why. Why press releases? Why did everybody join with "me too"? Most of all, if these people are so smart, why would their "tests" be so willfully negligent in their setup?
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David Shadoff @dshadoff.bsky.social · 26/09/2026
Cool project ! But I want to know if it has an accelerometer to know when you are shaking it for erasing the picture… www.hackster.io/news/a-digit...
hackster.io
A Digital Take on the Classic Etch A Sketch
YouTuber Tekavou built a digital Etch A Sketch with an ePaper screen and a Raspberry Pi-based camera that draws pictures on its own.
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David Shadoff @dshadoff.bsky.social · 26/09/2026
Good book ! But while looking into this further, I learned that Raymond Chandler's whole catalog of books is now in the public domain (in Canada at least). Good news for fans of the genre (in Canada at least).
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David Shadoff @dshadoff.bsky.social · 25/09/2026
A follow-up to the recent PC Engine ADPCM discussion: Mesen2 and Geargrafx have updated ADPCM speed to 32100 in their codebases, although you may need to wait for a formal release. TurboEverdrive Pro updated firmware this week: krikzz.com/pub/support/...
krikzz.com
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Filler @playongofantrans.bsky.social · 23/09/2026
This is currently a functional in-game asset. #OjousamaSousamou #DebutanteDetectiveCorps #PCFX #romhacking #reverseengineering
The English title screen for Debutante Detective Corps on the PC-FX.
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David Shadoff @dshadoff.bsky.social · 22/09/2026
I keep wondering what Raspberry Pi will do for the next-generation RP series microcontroller, but then I realize it's still probably at least a year away.
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David Shadoff @dshadoff.bsky.social · 21/09/2026
OK, this is pretty cool. hackaday.com/2026/09/21/t...
hackaday.com
The RP2350 Does 1080p
Coaxing a DVI signal out of a microcontroller to drive a DVI or HDMI screen has been possible for a while now, but limitations in what the devices can do has, in turn, placed a limit on the resolut…
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David Shadoff @dshadoff.bsky.social · 19/09/2026
I like the "emulation on RP2040/2350 microcontroller" scene: early 1980s computers being replicated - keyboard to screen - on a single microcontroller. If I had time, I'd like to use multiple MCUs (per-subsystem) to get more power/modularity. They're cheap and easy to justify.
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pimoroni @pimoroni.com · 19/09/2026
Happy International Talk Like A Pirate Day folks! Get 20% off almost everything in store with code YARR today! shop.pimoroni.com
shop.pimoroni.com
Pimoroni
A curated range of the best of breed Maker products from Raspberry Pi to breakouts and components. Worldwide delivery, huge product range, great customer reviews, and personal support.
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My Life in Gaming @mylifeingaming.bsky.social · 18/09/2026
Try has a deep dive on @zaxour.bsky.social 's new Palette Cleanser board for the PC-Engine. Get accurate composite colors with analog RGB! Check it out! youtu.be/SreeUQL0Fso
youtu.be
PC Engine RGB is Fixed! - Getting better colors with Palette Cleanser! :: RGB334 / MY LIFE IN GAMING
YouTube video by My Life in Gaming
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zaxour 阿宅 @zaxour.bsky.social · 18/09/2026
Palette Cleanser is live! t.co/sOCXG64vL4
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David Shadoff @dshadoff.bsky.social · 17/09/2026
I'm always shocked at how much effort is spent by software companies on user interface changes compared to bugfixes and new features (and how frequently it happens). The metaphor for a house would be: getting all new windows and moving the location of the front door, instead of fixing the toilet.
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David Shadoff @dshadoff.bsky.social · 16/09/2026
Oh look, it arrived ! I won't have time to play until probably Christmas, but now I can in English.
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David Shadoff @dshadoff.bsky.social · 16/09/2026
I just realized that Hudson developed a game called "Quiz Econosaurus" for the LaserActive. I wonder if Hiromasa Iwasaki will be covering this in an upcoming Hudson Densetsu book. www.mobygames.com/game/113494/...
mobygames.com
Quiz Econosaurus (1993) - MobyGames
This environmental quiz game aims to raise awareness of climate issues. One to four players test their knowledge of environmental and climate facts in several themed stages. In between sets of questio...
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David Shadoff @dshadoff.bsky.social · 15/09/2026
Hmm... we can always hope. www.theregister.com/ai-and-ml/20...
theregister.com
Ex-FTC boss Khan urges Uncle Sam to break out the handcuffs for AI CEOs, citing 1934 precedent
There are plenty of laws on the books to hold companies, and potentially their execs, accountable
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Ian Scott @polpo.org · 14/09/2026
One of my favorite moments from #vcfmw this year was when @thegirlg33k.com let me test picoide out on her PC-9821 and do some IDE bus captures. After some shenanigans with drive geometry it booted right up off the picoide! And CD works too! Thanks again for letting me crash your table 😅
Me sitting in front of a PC-98 that is taken apart at a long table setup in a big expo hall. The table has a teal tablecloth on it
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Filler @playongofantrans.bsky.social · 14/09/2026
Here's another tease for Ojousama Sousamou (Debutante Detective Corps.) on PC-FX. This week, we concentrated on a complex scene handler that activates when the player encounters a specific lady. #PCFX #retrogaming #fantranslation #reverseengineering ko-fi.com/post/Ojousam...
ko-fi.com
Ojousama Sousamou Roulette Preview
Filler published a post on Ko-fi
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Basement Brothers @basementbrothers.bsky.social · 14/09/2026
What happens when a bunch of waitresses decide to fight it out? TGL's "Variable Geo" series happens! If you ever wondered what that "Advanced V.G." game in your import TGCD, PS1, or Saturn collection is all about, here's the PC-98 game that started it all! youtu.be/cX5Hefq9ukw
youtu.be
V.G. - Variable Geo (PC-98 Paradise) The 1993 Fighting Game About Waitresses
YouTube video by Basement Brothers
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David Shadoff @dshadoff.bsky.social · 13/09/2026
For the first time in a while, I had time and energy to do some baking. Pictured: Blueberry muffins, and a before/after picture of a peach galette.
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adafruit @adafruit.com · 13/09/2026
coming soon: port authority 🚌 the best, best usb hub for engineers and their smart tools. 100% open source, stackable, and designed for getting real hardware into your automated test loop.
the best, best usb hub for engineers and their smart tools. 100% open source, stackable, and designed for getting real hardware into your automated test loop.
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David Shadoff @dshadoff.bsky.social · 10/09/2026
Here's a question: If laws are made to stop people from doing bad things, and if a dog commits a crime, the owner should be held responible, how do we prosecute crimes committed by AI ? Should be the owners, right ? www.theregister.com/ai-and-ml/20...
theregister.com
Anthropic reveals fourth likely crime committed by its AI
Claude's Felony Bench rap sheet is now as long as OpenAI's
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David Shadoff @dshadoff.bsky.social · 10/09/2026
OK, I have more information on the ADPCM. We have a tracking spreadsheet that you can contribute to, and the link to the test ROM is in cell A-1. You will need to run this on a CDROM-based system (as only CDROM systems have the ADPCM unit). docs.google.com/spreadsheets...
docs.google.com
ADPCM Speed Test Results
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David Shadoff @dshadoff.bsky.social · 10/09/2026
Interesting story about improving the accuracy of all PC Engine emulation (hardware and software): Legend of Xanadu has very long animations (3 to 5 minutes) with ADPCM playing in the background. Some emulators gradually de-synchronize after a couple of minutes. We found out why.
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David Shadoff @dshadoff.bsky.social · 09/09/2026
I read this morning about an Anthropic researcher considering a 10% probability that an AI could wipe out all humans within 10 years. I feel like that would only be possible if humans acted on wacked-out, stupid suggestions without questioning them... Oh shit.
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David Shadoff @dshadoff.bsky.social · 09/09/2026
I really feel that linux and other open-source hardware and software are about to gain substantial market from the major players in hardware and software because of the active putrefaction of their products and services.
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David Shadoff @dshadoff.bsky.social · 08/09/2026
I thought that the LG Monitor auto-downloader scandal was a startling betrayal of trust. This is SO MUCH WORSE. It's got to be illegal - but that doesn't seem to stop anybody anymore. www.youtube.com/watch?v=6IFV...
youtube.com
216,000,000 Spy TVs | The LG Smart TV Problem
YouTube video by Gamers Nexus
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Betty - play 🌌AstraX🌌 please @neutronio.games · 07/09/2026
The thing with AI is much like when Radium☢️ was discovered in 1898. It was used in paint, glass, advertised as healthy, without care or knowledge of the actual costs it came with. Historically, capitalists jumped into trends to sell a fancy new technology thing that just happen to kill you
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Filler @playongofantrans.bsky.social · 07/09/2026
No video this week, so here's a brief progress update. This is not a promise, but a hope that I'll be able to bring this work to completion. #PCFX #fantranslation #retrogaming #reverseengineering ko-fi.com/post/Debutan...
ko-fi.com
Debutant Detective Corps (PC-FX) WIP Screenshots
Filler published a post on Ko-fi
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台羽正 @tadashidaiba.bsky.social · 06/09/2026
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Random Stranger @randomstranger.bsky.social · 01/09/2026
I just tripped on this while scrubbing through my footage and is this the first ( ^ _ ^ ) emoticon?!
Screenshot from Efera & Jiliora: The Emblem from Darkness. A conversion with a villager in the first town is taking place where he's just being a friendly guy. It ends with "( ^ _ ^ )".
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David Shadoff @dshadoff.bsky.social · 01/09/2026
And I just realized that the oldest datestamp on a file in my emulator zip file is August 28, 1996. 30 years ago, almost to the day. See "tgsim" on my old webpage (not updated in over 20 years): interlog.com/~daves/
interlog.com
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David Shadoff @dshadoff.bsky.social · 01/09/2026
So who am I anyway, and why do I have opinions on emulation-vs-FPGA anyway ? Some people may not have heard my name before. I've been following the PC Engine since 1989. I made the Kisado adapter to play import games on TG-16 after comparing the PCBs of TG16 and PCE in late 1989.
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David Shadoff @dshadoff.bsky.social · 01/09/2026
These look great ! Magazines, periodicals and mail-order leaflets from the 1980s really tell you a lot about the computer culture of the era. I found a bunch of this kind of stuff recently while cleaning my childhood home, and it brought back a lot of memories.
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David Shadoff @dshadoff.bsky.social · 30/08/2026
I've seen some people talking about "emulators" (CPU-based) versus "FPGA" again lately, and which is "better", and whether FPGAs are actually a form of emulation or not.
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David Shadoff @dshadoff.bsky.social · 29/08/2026
On the subject of RGB-versus-YUV color palettes on the PC Engine, the article I read mentioned "...as the original developers intended". Once upon a time, I thought this way, but now, I don't think it's possible to interpret the original developers' intent as a singular thing.
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David Shadoff @dshadoff.bsky.social · 29/08/2026
Ha, I just noticed that google translate understands "telling porkies" (cockney rhyming slang for "telling lies"), something that not all English speakers will understand.
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David Shadoff @dshadoff.bsky.social · 29/08/2026
I really enjoy visiting Japan, and catching up with friends on what's happening in retrogaming there. But Japan is quite isolated and since English is not a daily-use language, I sometimes feel like Japan is not up-to-date on news from the rest of the world in retrogaming.
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SUDDEN・DESU @sudden-desu.net · 27/08/2026
Oof, I completely forgot about bsky, it took me making a sour post over there to be reminded of it... Hey, look! Four player mode in Gun Force 2 was restored! sudden-desu.net/entry/geo-st...
sudden-desu.net
Geo Storm / Gun Force II - Fully Working 4 Player Mode and Debug Tools
Long suspected but not verified until now, the 4 Player mode in Gun Force 2 (aka Geo Storm) is fully implemented and playable!
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David Shadoff @dshadoff.bsky.social · 26/08/2026
I've updated the TRS-80 B-17 repository with much more information - commented disassemblies, cassette scans, a Python script to read files, advertisements, reviews, etc. It seemed really cool back then, and I don't want it to vanish without a trace. github.com/dshadoff/TRS...
github.com
GitHub - dshadoff/TRS-80_B-17: Information about ABS Suppliers' B-17 Software-based Tape System for the TRS-80 Model I
Information about ABS Suppliers' B-17 Software-based Tape System for the TRS-80 Model I - dshadoff/TRS-80_B-17
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Basement Brothers @basementbrothers.bsky.social · 24/08/2026
A PC game based on the "Record of Lodoss War" series was released by Humming Bird Soft in 1988. The game sold well, and fans loved it, but is there still any enjoyment to be had from this dry old RPG today? youtu.be/1Ujof7gryhk
youtu.be
How "Record of Lodoss War" Became One of Japan's Biggest PC Games of 1988 (PC-98 Paradise)
YouTube video by Basement Brothers
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Furrtek @furrtek.bsky.social · 22/08/2026
Freshly decapped and scanned NEO-PCM2: ADPCM ROM multiplexing and security used by late NeoGeo games. Hopefully will help fix inexact descrambling emulation. Fujitsu CG47 gate array from 1999 Kindly donated by @Rolel42
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Filler @playongofantrans.bsky.social · 22/08/2026
I've updated our unofficial English language translation patch for Welcome to Pia Carrot to v1.1! The update fixes a menu overflow issue and a couple of style issues in the script. Follow the link for details! #romhacking #fantranslation #piacarrot #vn ko-fi.com/post/Welcome...
ko-fi.com
Welcome to Pia Carrot EN Patch Updated to Version 1.1!
Filler published a post on Ko-fi
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Yuvi @yuvi.app · 18/07/2026
Team Innocent videos now fully subbed and running on hardware, with my new PC-FX Video Encoder I made.
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David Shadoff @dshadoff.bsky.social · 13/08/2026
Eeek ! I was still a kid when wirewrap was still considered a normal prototyping aid, and I missed out on all the "fun". Looking at designs like this one, I feel like I was better off not experiencing it firsthand.
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David Shadoff @dshadoff.bsky.social · 12/08/2026
My B-17 script managed to read all 17 of my initial recordings from tape. Although I did have to do a bit of audio adjustment (normalize and amplify) in some very specific sections where there were some dropout-like conditions.
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David Shadoff @dshadoff.bsky.social · 11/08/2026
I just added a script which reads the data from audio files, in the TRS-80 B-17 repository. github.com/dshadoff/TRS...
github.com
GitHub - dshadoff/TRS-80_B-17: Information about ABS Suppliers' B-17 Software-based Tape System for the TRS-80 Model I
Information about ABS Suppliers' B-17 Software-based Tape System for the TRS-80 Model I - dshadoff/TRS-80_B-17
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Ben Hanson @yozetty.bsky.social · 10/08/2026
Based on the attract screen, you won't see the name of this 90s arcade game coming...
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Filler @playongofantrans.bsky.social · 10/08/2026
Announcing the release of the unofficial English language translation patch for Mezase Pachi Pro - Pachio-kun (Become a Pachi-pro! Pachio-kun) on the #Famicom! #NES #pachinko #fantranslation #romhacking Get the patch here: ko-fi.com/post/Mezase-...
ko-fi.com
Mezase Pachi Pro - Pachio-kun EN Translation Patch Release!
Filler published a post on Ko-fi
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