Julio Merino
banner
jmmv.dev
Julio Merino
@jmmv.dev
Operating systems, build systems, and programming languages. Mostly Unix, Bazel, and Rust. Author of Blog System/5. Creator of EndBASIC, and more. https://jmmv.dev/
The recording of my EndBASIC talk at BSDCan 2025 is now available: www.youtube.com/watch?v=WZFY... — Watch to learn about the inner makings of the "EndBASIC OS" RPI disk image. Thanks to the A/V team for getting it out!
An embedded dev kit for EndBASIC with NetBSD by Julio Merino
YouTube video by BSDCan
www.youtube.com
September 3, 2025 at 12:34 PM
Happy Friday! The instructions to build your very own EndBASIC microcomputer (aka the EndBOX), including links to components AND the very first public disk images 😱, are now available. Have fun! www.endbasic.dev/2025/07/endb...
EndBOX DIY kit now available - EndBASIC
Components to build the EndBOX I and the assembled EndBOX I Micro. About a month ago, I officially unveiled the EndBOX: a retro-style micro-computer designed to run the EndBOX OS. And what is the EndB...
www.endbasic.dev
July 11, 2025 at 3:23 PM
Instructions for the DIY kit ready and the very first release builds are in the oven. Interested in early, privileged access? coff.ee/jmmv !
July 3, 2025 at 1:53 AM
Work on the EndBOX continues (and you've seen some of it via tweets here), so... here is the first weekly progress report! buymeacoffee.com/jmmv/weekly-...
Weekly progress report: 2025-06-22 — Julio Merino
Post by Julio Merino
buymeacoffee.com
June 22, 2025 at 5:26 PM
TIL about Tildes. Do any of you have an invite? I see the EndBOX has been shared there and I ought to engage!
June 8, 2025 at 1:50 AM
My talk about the OS powering the EndBOX is coming quick next week, so I had to rush getting this out so... I guess it's official now? www.endbasic.dev/2025/06/unve... Join me in this craziness and let's make it happen!
Unveiling the EndBOX - EndBASIC
Remember when turning a computer on meant instantly jumping into code? No bloat, no distractions—just you and a prompt? That’s the experience I’ve been working to bring back with the EndBOX: a small, ...
www.endbasic.dev
June 6, 2025 at 5:28 PM
This shall be the next piece of hardware to add support for!

But… after the conference, and finishing the plan on what to actually do about producing this box “for real”.
June 5, 2025 at 2:38 AM
Time to resurface this! I found a draft update I prepared on Nov 8th to fix the text around username mapping and I published it now. I could not publish it back then because the CDN involved was being dumb and silently banned my updates due to a "dangerous substring".
June 3, 2025 at 11:59 PM
Ooooh look! Someone is featuring EndBASIC in their Game Development summer course! moosadee.gitlab.io/courses/camp...
Getting Started with Game Development
moosadee.gitlab.io
June 3, 2025 at 6:05 PM
After ALL morning of fighting DTBs, I finally got the WiFi on the Pi Zero 2 W to work on NetBSD. Perfect for showtime at BSDCan.
June 1, 2025 at 6:52 PM
The EndBASIC dev kit presentation for BSDCan ain't gonna write itself. Two weeks to go!
May 31, 2025 at 2:59 AM
I've been tinkering with 3D printing as a complete beginner for the last two weeks as you may have seen around here, so I wrote a thing. jmmv.dev/2025/05/begi...
Beginning 3D printing - Julio Merino (jmmv.dev)
Hello readers and sorry for the 2-month radio silence. I’ve been pretty busy at work, traveling during school breaks, hacking on EndBASIC when time permitted, and… as of two weeks ago… tinkering with ...
jmmv.dev
May 28, 2025 at 4:20 PM
It’s the weekend again so it’s time to continue iterating! Looking better now, I think? ☺️

… but the base warped again and I need to do some internal tweaks. Each iteration takes about 12 hours to print which doesn’t make it easy…
May 24, 2025 at 12:05 AM
Have you played VVVVVV? Did you know that its soundtrack is called PPPPPP? And... did you know that there is a metal remix called MMMMMM? I did not know the later and discovered it via the orange site! Amazing stuff. open.spotify.com/album/67mFUe...
Mmmmmm
Familyjules7x · Album · 2014 · 19 songs
open.spotify.com
May 9, 2025 at 8:30 PM
EndBASIC dev kit finally shaping up—literally. But this is my first 3D design+print, so bear with me...
May 7, 2025 at 2:28 AM
The SDL2-compat library in F42 (an SDL2 API shim on top of SDL3) isn't as "compat" as one would want, so I just wasted 2 hours figuring out why the EndBASIC console regression tests started failing 😒
May 4, 2025 at 10:56 PM
I hadn't booted Fedora on my laptop for a few months now. I did last week, upgraded to 42 KDE Plasma, and OH WOW. I forgot how fast everything feels compared to Win 11. And Fedora 42 works _really_ well, especially now that the KDE spin is official.
May 3, 2025 at 5:11 PM
Alrighty! I should have added this "project browser" a long time ago to the EndBASIC site... but better late than never. Next up: adding tiles for featured projects, with screenshots and the like.
April 25, 2025 at 2:33 PM
Got a cheapo luggage bag for the kid and, while packing, noticed this. Like… HTF does this happen?! The fix was two screws away but I wonder if this is why it was so cheap?
April 24, 2025 at 3:44 PM
Is that bump on the wall a trigger for a secret room? Or have I played too much Doom and Quake?
April 23, 2025 at 1:54 AM
For the Googlers and Xooglers around here… I found the Noogler hat store and the auth system building.
April 17, 2025 at 11:32 AM
My brain wasn’t very happy trying to continue sleeping at 3am due to jet lag (but didn’t want to wake up either) and it ended up designing the next feature I have to add to EndBASIC. And it actually makes sense. Maybe I’ll have time to code it on the flight back home.
April 15, 2025 at 11:46 PM
This (via HN) looks like a great read for tomorrow's long flight. I've wanted to learn Elisp "properly" for a long time, but then... I've never actually felt the need to use it other than for configuration. "Coding my editor" is not how I think about it...
April 13, 2025 at 1:37 AM
Aaah, the joys of using a non-mainstream OS: having to learn and understand random stuff when you most need it. Today's edition: how profiling works under the covers. TBF this is how I learned A LOT about systems ~25 years ago, but it gets old.
April 11, 2025 at 2:44 PM
BSDCan is just 2 months away so that’s the time I’ve got to learn me some CAD and figure out 3D printing…
April 10, 2025 at 2:07 PM