Today marks the 44th anniversary of the ZX Spectrum, the weird little goblin of a computer that changed my life. My ongoing book series Speccy Nation is my attempt to explore why this period of gaming captivated me so deeply. Buy 'em here: www.amazon.co.uk/s?k=speccy+n... #ZXSpectrum

I'm at the "cleaning the grease out of the hob extractor fans" stage of avoiding writing slides for C++Now

Something for @bloopmuseum.bsky.social to consider? Remote video console access? :-)

Great to see this being appreciated!

Another day, another set of broken YouTube on Chromecast features... today: live premieres loop a 4-second clip over and over again.

hey @limitedrungames.com, I have a bunch of your games from over the years. Do you mind explaining why you're violating the license of my friends emulator? bsky.app/profile/did:...

Full Video: www.youtube.com/watch?v=KKbg...

Modern DRAM is based on a brilliant design from IBM. But, we're still paying for a latency penalty that's existed since the 60s! In this video, I'm introducing my research project (Tailslayer) that immensely reduces p99.99 latency on traditional RAM!

And the man knew what morals were worth teaching.

Less than 2 weeks until my C++Online Workshop! Make sure you sign up now! cpponline.uk/workshop/per...

I have a Basic Fractal Benchmark on this Google Sheet: If anyone has cool computers with 80-columns and BASIC, try running this little program while timing it. Report back so I can add it to the leaderboard. docs.google.com/spreadsheets...

The programme for C++Now 2026 is now live which features 50 different talks across 5 days from May 4th - 8th and includes talks from @matt.godbolt.org @foonathan.fosstodon.org.ap.brid.gy and more! View the full announcement: cppnow.org/announcement... #cpp #cplusplus #programming

Sharing this random doodle from a meeting 6 years ago as part of #badhumanart inspired by @lefticus.bsky.social :) Clearly it was a riveting meeting (can't remember what it was about but I've kept this doodle ever since)

C++Now is pleased to announce the third of three keynotes for the 2026 Conference which will be presented on Friday 8th May! Benchmarking - It's About Time by @matt.godbolt.org Find out more and register: schedule.cppnow.org/session/2026... #cpp #cplusplus #programming

🧑‍🎓 LEARN how to WRITE ✍️ , RECOGNIZE 👀 , and GENERATE 🤖 better C++! Preview: youtu.be/Ipr6ntCAm9A Apr 9 online cpponline.uk/workshop/per... May 5-7 CA ndctoronto.com/workshops/c-... Jun 15-16 UK accuonsea.uk/tickets/ Sep 12-13 US cppcon.org/class-2026-b... Sep 21-22 NO ndctechtown.com/tickets

@fbuontempo.bsky.social joins 🖥️ @matt.godbolt.org to break down Modern C++ • How to learn modern C++ • The features most people struggle with • Why teaching matters more than syntax • What’s coming next this might help you unlearn and relearn the right things 🎧 gotopia.tech/podcast

Walking down memory lane with a bit of Claude assistance: a game I made in 1993 but lost the source to, reverse engineered and things like maps etc created: github.com/mattgodbolt/...

Having a great old time meeting friends and hacking on old Acorns at ABUG south. Representing my adopted homeland with an @adriansdigitalbasement.com t-shirt :)

I'm starting to get as excited as a kid before Christmas. I'm packing to go to ABUG in the UK. Last year was a load of fun and I'm really looking forward to meeting up with my pals! The simple pleasures of playing with old 8-bit computers with friends in a pub. Something needed right now!

I love this idea!!!

I really appreciate the 6mo free, @anthropic.com ! Yay but - I'm already on 20x and I can't accept it... - please help :)

At our next meeting on Monday 16th March come chat with @matt.godbolt.org in the pub (or on Zoom if you must) about JSbeeb, Compiler Explorer, and more! Free entry, but you have to buy your own drinks 😛 rougol.jellybaby.net/meetings/ind...

I had to

Pentium 4 Trace Cache is so back! Except yeah in a different way. The trace cache was the right idea, and when it worked it worked really well. But when it didn't the perf holes were pretty terrible. So instead we have something slightly less full-on, but it recovers more gracefully.

Most programmers are taught that L1 is the “top level” cache on x86.
 It’s not quite true anymore! 
Intel calls it the Decoded Stream Buffer (DSB), AMD the OpCache. Only enough room for ~4,000 micro-ops, but there are interesting ways to take advantage of it.

How do we know the random series of bits we just sent down your cable didn't get corrupted on the way? With CRCs! But what are these mysteries checks...I try to explain on today's @computerphile.bsky.social !https://youtu.be/_x0vbnUKYSU

I'm releasing over 50 deep dives into The Sentinel, Geoff Crammond's epic #BBCMicro game. Batch #1 is now ready: 6 new articles about memory maps, program flow and interrupts, all at thesentinel.bbcelite.com/deep_dives Batch #2 (maths!) coming soon. Enjoy! #retrocomputing #retrogaming #c64 #8bit

Fellow nerds! 🤓 Want to help me play test my new Programming Puzzles Game website? programmingpuzzles.fun It's the companion site to my Programming Puzzles for Everyone book. Have fun and report any issues.

Uncommonly excited about this: www.youtube.com/watch?v=uDtv... - trailer for a biopic of the legend himself, Bjarne Stroustrup!

[email protected] interviews @fbuontempo.bsky.social about "Learn C++ by Example," exploring practical teaching methods that make modern C++ features accessible through games and self-contained examples.

Super important in this world of LLMs that /may/ speed up code writing but may also have some important caveats!

In 1980, Intel released the 8087 floating-point chip, making math much faster. I'm reverse-engineering this chip, 46 years later. Most of its instructions are implemented in microcode, but some are implemented in hardware. Let's look at the circuitry that decodes instructions and decides what to do.

New Two's Complement Episode: How Fast is Fast? Ben interviews Matt with a deceptively simple question: make my program go fast. 44 minutes later, robot dogs are falling over, Grace Hopper's wire turns up, and Matt still hasn't gotten the job. Listen at: twoscomplement.org#podcast/how-... :)

now that Git 2.53 is out, the Git data model @omarieclaire.bsky.social and I wrote is on the official Git website! git-scm.com/docs/gitdata...

Updates to my starter project. Including automatic build and deployment to github pages with a CI emscripten build! * emscripten * CI OS Updates * CI Compiler updates * Fine tuning of static analysis github.com/cpp-best-practices/cmake_template cpp-best-practices.github.io/cmake_templa...

woah, life goal achieved. the creator of C++ (mostly) liked my video lol

The last week I've been "home alone" juggling work and the kids (who are basically proto-adults) So I'm doing this on easy mode compared to most but... boy do I appreciate all my wife does for us all when she's here!

OK "god bless america" and then naming every country in the americas from south to north is absolute king shit

We just added CCC to @compiler-explorer.com - Claude's C Compiler. And what fitting way but to have gotten Claude to added itself to CE... @anthropic.com - added a build to our builder, added it to our daily builds, added the installation, the configuration, and tested it in staging. Nice!

I'm fairly convinced at this point that the secret to longevity is a nice hot shower. In 2024, I went to @revision-party.bsky.social for one and wrote a song about it... inversephase.bandcamp.com/track/hubsch... Inspired by leinad, it's also a @bloopmuseum.bsky.social shill. #demoscene

Come to my highly interactive and dynamic C++ Best Practices workshop at NDC Toronto May 5-6, 2026! ndctoronto.com/workshops/c-...

really looking forward to giving this keynote! 

imo the best reverse engineers also deeply understand compilers; I’ll be getting into the weeds with LLVM for this one

Is this whole thing just because he’s confused about the Mercator projection

#GOTOpodcast: @matt.godbolt.org sits down with Daniel Kusswurm to talk about the parts of modern computing most of us never touch but still rely on. They dig into: -> what SIMD actually is -> intrinsics vs handwritten assembly -> vectorized algorithms 🎧 gotopia.tech/podcast

David Bowie 8/1/1947 - 01/10/2016 Let’s flood Bluesky with our favorite Bowie songs today: youtu.be/bsYp9q3QNaQ?...

We cordially invite all members of the C++ community, to submit session proposals for the 14th annual C++Now Conference, to be held May 4th – May 8th, 2026, in Aspen, Colorado. Read the announcement at cppnow.org/announcement... #Coding #Cpp #Cppnow #Programming

Fun fact, this "world's most complicated/important machine" that Veritasium just covered runs C++! youtu.be/MiUHjLxm3V0 I know because I have had students from ASML on multiple occasions (they had me out there for training and to speak at a meetup back in 2018!) @veritasium.bsky.social

I just rediscovered that I have a Wikipedia page.... But only in German(!). Not quite sure how that came to be so...

The music for the Advent of Code Optimisation is available for you listening pleasure: youtu.be/6ZlVRMkFB9c?... and check out nocturnalplant's bandcamp too: nocturnalplant.bandcamp.com/music Thanks @nocturnalplant.bsky.social !