All you really need to know about embedded systems is that an MPU has an MMU whilst an MCU has an MPU (no, a totally different kind of MPU).

I lost a couple of hours today trying to use a BlueSCSI HDD image with SCSI ID 0 on a Silicon Graphics machine... (one where the SCSI controller is on ID 0)

We are working to restore service. Apologies for the disruption!

Does anyone know how to wire an eject button to a @bluescsi.com DB25? I'm trying to install IRIX from 7 CD images and it's very painful having to remove the card every time I want to swap CDs.

Ugh, VFAT is a trip. But now I can open files based on their long file name. github.com/rust-embedde...

Another LGR Christmas thing! Watching/reacting/researching stuff in the Computer Chronicles Christmas Buyer's Guide from 1987 youtu.be/bWXLDfbmpU8 And that's it for both holiday videos and LGR overall in 2025. Have a happy new year and I look forward to getting back to more LGR things in January 🎉

I made a joke in my main Discord server about DOOM E1M1 being in a major key and @abigbagofkeys.sickonedude.com actually made it. Jesus fucking Christ listen to this hahahaha

Does anyone know how to *actually* get U-Boot working on a Raspberry Pi 3B (not a B+)? I followed a dozen guides online and nothing works. Just get a rainbow on HDMI and nothing on UART. Have tried macOS and Debian hosts.

We’re looking for a Werkstudent:in in Germany to help work on rust-analyzer, the open-source LSP server behind Rust editor features. Paid student position. 🦀 Details → ferrous-systems.com/blog/student...

I've finally managed to install Mac OS X Server 1.0 on a Power Macintosh (a Beige G3). It has Boink Out. It's delightfully NeXTSTEP-ish. Wonderful.

Maybe LLMs speak prep-school (post-) Imperial British English. Because that's what most English knowers globally use. marcusolang.substack.com/p/im-kenyan-...

Are you in a safety-critical industry? Using the Rust programming language (@rust-lang.org) or would like to? Make your voice heard when it comes to what you'd like to see for Rust Project Goals! (survey link below)

Oh yay, github actions are broken again. Downloading gzipped files in CI produces files that are not valid gzip files. No idea what the hell is going on but I'm going to uncharitably assume Copilot has been working on the codebase again.

iPhone: ok, fine, you can have 18.7.2 but I’m going to delete the update to 26.1 that I already downloaded in the background just to spite you Me: good

Finally, they've ended that Rust for Linux experiment.

The original article this article is leeching off of and voiding of context for ragebait points. It's a nothing statement, Aardman isn't switching to ai. The kind of "ai" here is the same automation stuff we've had for years, but renamed ai to attract investors. www.radiotimes.com/movies/walla...

Did you know Sun made an ATX form factor UltraSPARC board?

Delighted to have the wonderful @profaliceroberts.bsky.social back at #NineLessons this year. She'll be on stage for the Dec 19th show at Kings Place. Tickets here - www.kingsplace.co.uk/whats-on/nin... CC @robinince.bsky.social

I’ll be at the Bring and Buy at Cambridge Centre for Computing History today. There will be unrepeatable bargains.

How many SCSI LUNs (Logical Unit Numbers) is too many LUNs? Here I have 12.

So, this O2 sort of works. The power switch is broken but there’s a jumper on the main board to bypass it. SCSI drives are toast, obviously. But I have a box of them.

In my head Netflix were so pissed at having Friends taken away, they bought the company that owned the show to get it back.

I have acquired new items. hachyderm.io/@thejpster/1...

A perfect CVSS 10 🧑🏻‍🍳💋 CVE-2025-55182: Unauthenticated remote code execution vulnerability in React Server Components The vuln is in versions 19.0, 19.1.0, 19.1.1, and 19.2.0: react-server-dom-webpack react-server-dom-parcel react-server-dom-turbopack Upgrade immediately!

A Safety Certified (SIL 2) Rust libcore is shipping today! Hats off to my colleagues for this extraordinary feat. ferrous-systems.com/blog/ferroce...

I wrote up the saga of booting Debian from 2004 on an ARM based Acorn RiscPC from 1994. It was a wild ride. www.thejpster.org.uk/blog/blog-20...

I think I found a bug in LLVM but I think almost exactly zero people will over trip over it. But ... it is a bug, I'm sure of it.

Ok, now I want a StrongARM.

I have Debian 3.0 (Woody) booting on a ln Acorn RiscPC 700 with ARM710 CPU. It was a nightmare to install. Blog soon.

Does anyone have a RiscPC? If so, could you download archive.debian.org/debian/dists... onto a RiscPC, unpack it, and use it to boot Linux? On my machine it hangs starting init and I don't know if it's a hardware issue or a software issue.

Celebrating the Xbox 360's 20th anniversary on LGR! youtu.be/hlnbsRz6E2Y Opening a boxed and unused Xbox 360! They released it two decades ago now, so this was the perfect time to unbox a 60GB Pro model, set it up, enjoy the Blades, and play some games. While HOPEFULLY avoiding red rings. Jump in!

Incredibly disappointed (shocked even) that the plan is to make the default Rust mutex not poisonable in the 2027 edition. Poisoning is one of the best examples of Rust focusing on rigor, and removing it from the default mutex would be a massive step backwards.

I have no words. labs.watchtowr.com/stop-putting...

It’s not a bubble. It’s not a bubble but has some elements of irrationality It is a bubble, but only that subset, not this bit that we work on. Been a hell of a week, huh?

Android’s Rust code has 0.2 memory safety bugs per million lines of code. Their C and C++ had 1000 per million lines of code. security.googleblog.com/2025/11/rust...

I need some more RAM for my RiscPC. The Woody initrd hangs on boot and I want to rule out RAM issues before I make a new one. The Potato initrd works but once Potato is installed, it crashes all over the place. I have a disk I half upgraded from Potato to Woody which sort of works but it’s a mess.

Given that it's an e-mail client, Outlook is suprisingly bad at letting me type in the names and e-mail addresses of people I want to send my e-mail to.

I think my internet radio got stuck and just looped the same section over and over again, and honestly, it was great.

It's official! #PicoIDE, the open source IDE/ATAPI drive emulator I've been working on for the better part of this year, will be launching at Crowd Supply! Go there to sign up for updates and to be notified when the campaign is live: www.crowdsupply.com/polpotronics...

We're going to do it all over again! Very excited to announce RetroFest 2026 to be held at Swindon's STEAM museum on the 30th/31st May. If you'd like to exhibit, just full in the form - and if you'd like to come, why not buy a ticket! They also make wonderful Christmas presents :) - retrofest.uk

My blog is still up at Mythic Beasts, in case you need something to read. Here's a piece about HP-UX and the DUX cluster filesystem. thejpster.org.uk/blog/blog-20...

Busy busy.

My @raspberrypi.com 500+ Ethernet port has massive packet loss running at 10baseT. Switched to a USB Ethernet device and it’s OK. Cost me 90 minutes in debugging DNS for my #retrocomputerfestival exhibit :/

🦀 I've improved the implementation behind all the string formatting macros in Rust: println, panic, format, write, log::info, etc. (Everything using format_args!().) They will compile a bit faster, use a bit less memory while compiling, result in smaller binaries, and produce more efficient code! 🎉

PowerPC fans get really upset if you’re rude about the favourite chip. Also, if you post a video on Reddit no one watches it and they just kick off based on what they imagined it said based on the title.

Was PowerPC ultimately a failure? Asianometry makes a compelling argument for Yes. youtu.be/Tld91M_bcEI

Did you know that before Sega bought the rights, Columns was a demo bundled with HP's UNIX? I have it running on a 68030 based HP 9000. But it's doing it by booting over the network from a PA-RISC machine, and they share the same root filesystem. How?! Well. thejpster.org.uk/blog/blog-20...

I will be there, with a collection of incredibly expensive 90's UNIX workstations that you were absolutely not supposed to be gaming on ... but we're going to anyway.