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TheAge_National
feeds.twtxt.net
 (6d ago)

‘Profound injustice’: 16 experts demand inquest for Epstein survivor Virginia Giuffre
A rare intervention by some of Australia’s most prominent domestic violence experts warns it would be a “profound injustice” if potential systemic failures were not scrutinised. ⌘ Read more

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TheAge_National
feeds.twtxt.net
 (2w ago)

Push to include AI chatbots in Australia’s under-16 social media ban
Cyber experts concerned about unregulated AI chatbots linked to a series of mass tragedies in the US are pushing for them to be included in Australia’s under-16 social media ban. ⌘ Read more

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Wired_Top_Stores
feeds.twtxt.net
 (2w ago)

Nike World Cup Uniforms Made of Recycled Textiles Won’t Solve Fashion Waste
The activewear giant has used chemical recycling to make jersey for 16 teams competing in the tournament. But the technique is unlikely to help solve fashion’s waste issue. ⌘ Read more

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ABC_horticulture
feeds.twtxt.net
 (8w ago)

WA wine industry warns of impact of Containers for Change expansion
A newly formed West Australian wine group warns that bottles of wine produced in the state could increase by $1.25 if the expansion of the Containers for Change scheme goes ahead. ⌘ Read more

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@villares@ciberlandia.pt
ciberlandia.pt
 (19w ago)

# Ateliê aberto de desenho com programação

Quintas-feiras 14:30 às 17:00 no #SescAvPaulista - 12 participantes, a partir de 16 anos. Distribuição gratuita de senhas 30 minutos antes.

Nesta atividade aberta, o público pode interagir com código de maneira lúdica e criativa, gerando desenhos a partir da modificação de programas em Python.

A cada encontro vamos explorar diferentes temas da chamada “#programaçãoCriativa”, estudando obras, exemplos visuais, e ideias da computação que inspiraram inúmeros artistas e programadores ao longo das décadas.

Fevereiro

5 de fevereiro - Módulos geométricos

12 de fevereiro - Animações em loop

19 de fevereiro - Imagens reticuladas

26 de fevereiro - Texturas algorítmicas

Março

5 de março - Recortes e colagens digitais

12 de março - Explorações combinatórias

19 de março - Malhas tridimensionais

26 de março - Tipografia experimental

Abril

2 de abril - Simulações físicas

9 de abril - Plantas e fractais

16 de abril - Autômatos celulares

23 de abril - Desenhos interativos

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@villares@ciberlandia.pt
ciberlandia.pt
 (19w ago)

# Ateliê aberto de desenho com programação

Quintas-feiras 14:30 às 16:30 no #SescAvPaulista - 12 participantes, a partir de 16 anos. Distribuição gratuita de senhas 30 minutos antes.

Nesta atividade aberta, o público pode interagir com código de maneira lúdica e criativa, gerando desenhos a partir da modificação de programas em Python.

A cada encontro vamos explorar diferentes temas da chamada “#programaçãoCriativa”, estudando obras, exemplos visuais, e ideias da computação que inspiraram inúmeros artistas e programadores ao longo das décadas.

Fevereiro

5 de fevereiro - Módulos geométricos

12 de fevereiro - Animações em loop

19 de fevereiro - Imagens reticuladas

26 de fevereiro - Texturas algorítmicas

Março

5 de março - Recortes e colagens digitais

12 de março - Explorações combinatórias

19 de março - Malhas tridimensionais

26 de março - Tipografia experimental

Abril

2 de abril - Simulações físicas

9 de abril - Plantas e fractais

16 de abril - Autômatos celulares

23 de abril - Desenhos interativos

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movq
www.uninformativ.de
 (21w ago)
↳ In-reply-to » Btw @movq you've inspired me to try and have a good 'ol crack at writing a bootloader, stage1 and customer microkernel (µKernel) that will eventually load up a Mu (µ) program and run it! 🤣 I will teach Mu (µ) to have a ./bin/mu -B -o ... -p muos/amd64 ... target.

@prologic@twtxt.net I’d love to take a look at the code. 😅

I’m kind of curious to know how much Assembly I need vs. How much of a microkernel can I build purely in Mu (µ)? 🤔

Can’t really answer that, because I only made a working kernel for 16-bit real mode yet. That is 99% C, though, only syscall entry points are Assembly. (The OpenWatcom compiler provides C wrappers for triggering software interrupts, which makes things easier.)

But in long mode? No idea yet. 😅 At least changing the page tables will require a tiny little bit of Assembly.

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@rlafuente@ciberlandia.pt
ciberlandia.pt
 (21w ago)

Ainda ando pasmado com o facto de uma série cheia de body horror, violência contra crianças, gore e violência gratuita (#StrangerThings) estar a ser agressivamente marketizada para um público infantil

Ontem um amigo de 9 anos do meu filho estava a contar-me como é a melhor série de sempre, e eu ainda estou burro de como há miúdos que estejam a ver isto

Btw não tenho problemas com a série (acabei ontem a 5ª temp e acho profundamente meh), é este esforço em vendê-la a crianças quando é claramente uma série 16+ no mínimo

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movq
www.uninformativ.de
 (24w ago)
↳ In-reply-to » My little toy operating system from last year runs in 16-bit Real Mode (like DOS). Since I’ve recently figured out how to switch to 64-bit Long Mode right after BIOS boot, I now have a little program that performs this switch on my toy OS. It will load and run any x86-64 program, assuming it’s freestanding, a flat binary, and small enough (< 128 KiB code, only uses the first 2 MiB of memory).

@prologic@twtxt.net That might be a challenge, at least in 16-bit Real Mode: The OS follows the model of COM files on DOS, i.e. the size of the binary cannot exceed 64 KiB and heap+stack of the running program will have to fit into that same 64 KiB. 😅 (The memory layout is very rigid, each process gets such a 64 KiB slice.)

And in 64-bit Long Mode, there is no “kernel” yet. The thing in the video is literally just a small bare-metal program.

But some day, maybe. 😃

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movq
www.uninformativ.de
 (24w ago)

My little toy operating system from last year runs in 16-bit Real Mode (like DOS). Since I’ve recently figured out how to switch to 64-bit Long Mode right after BIOS boot, I now have a little program that performs this switch on my toy OS. It will load and run any x86-64 program, assuming it’s freestanding, a flat binary, and small enough (< 128 KiB code, only uses the first 2 MiB of memory).

Here I’m running a little C program (compiled using normal GCC, no Watcom trickery):

https://movq.de/v/b27ced6dcb/los86%2D64.mp4

https://movq.de/v/b27ced6dcb/c.png

Next steps could include:

  • Use Rust instead of C for that 64-bit program?
  • Provide interrupt service routines. (At the moment, it just keeps interrupts disabled.)

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movq
www.uninformativ.de
 (28w ago)
↳ In-reply-to » Advent of Code 2025 starts tomorrow. 🥳🎄

Day 2 was pretty tough on my old hardware. Part 1 originally took 16 minutes, then I got it down to 9 seconds – only to realize later that my solution abused some properties of my particular input. A correct solution will probably take about 30 seconds. 🫤

Part 2 took 29 minutes this morning. I wrote an optimized version but haven’t tested it yet. I hope it’ll be under a minute.

Python 1 feels really slow, even compared to Java 1. And these first puzzles weren’t even computationally intensive. We’ll see how far I’ll make it …

https://movq.de/v/f831d98103/day02.jpg

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lyse
lyse.isobeef.org
 (29w ago)
↳ In-reply-to » 17, 21, and 22 are my favourites. Thank you for sharing! On 17, the pulley might be dangerously hanging, but if you manage to make it work, you will have a couple of nails to use! :-D

@bender@twtxt.net Thanks. That pulley is just to hang back up the telephone wire (on the ground in 16) for that farm and restaurant in 04 once they finish logging. Hahahahahaaahaaaa, I didn’t see the nails on top of the pole. :-D

Yup, these ice crystals are just lovely. :-)

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ABC_horticulture
feeds.twtxt.net
 (34w ago)

Australian wine labels feeling the pinch as Chinese buy and drink less
Cheaper bulk wine has been struggling in the market, but now even prestigious labels like Penfolds are feeling the pinch off the back of changing drinking habits and a reported crackdown on lavish banquets for civil servants. ⌘ Read more

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os-x-daily
feeds.twtxt.net
 (36w ago)

Deals: AirTags 4-pack for $65, M3 iPad Air from $449, & More
AirTags are super useful personal trackers with many uses from tracking a bag, purse, dog, cat, luggage, backpack, car keys, package, bike, car, or just about anything else you can imagine wanting to keep an eye on through the Find My network. Amazon is currently offering the AirTag 4-pack for just $65 ($16 per AirTag), … [Read More](https://osxdaily.com/2025/10/06/deals-airtags-4-pack-for-65-m3-ipad-air-from-449-m … ⌘ Read more

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ABC_JustIn
feeds.twtxt.net
 (36w ago)

Seven calls, 16 minutes, no answer. More Optus emergency failures exposed
Optus customers have come forward to report more cases of triple-0 calls failing outside the embattled telcos previously admitted outages. ⌘ Read more

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ABC_JustIn
feeds.twtxt.net
 (36w ago)

At least 16 injured as shots fired in Sydney’s inner west
A suburb in Sydney’s inner west was plunged into lockdown overnight after an alleged gunman opened fire on passing cars, including police vehicles. ⌘ Read more

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lwn-net
feeds.twtxt.net
 (36w ago)

[$] LWN.net Weekly Edition for October 2, 2025
Inside this week’s LWN.net Weekly Edition:

  • Front: Fedora and AI; Linting kernel Rust; openSUSE Leap 16; mmap() file operation; 6.17 statistics; dirlock.

  • Briefs: Bcachefs removal; Alpine /usr merge; F-Droid; Fedora AI policy; OpenSUSE Leap 16; PostgreSQL 18; Radicle 1.5.0; Quotes; …

  • Announcements: Newsletters, conferences, security updates, patches, and more. ⌘ Read more

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bender
twtxt.net
 (36w ago)

@aelaraji@aelaraji.com, I mean to follow up here on the brief exchange we had on irc.mills.io, but I forgot. Never too late, so here it goes:

18:16 <aelaraji> quark 🙏 much appreciated but it won't be necessary, since there isn't much to miss out on in most of  where I hang out, so I could just disconnect and spare everyone else the noise 
18:17 *** aelaraji (aelaraji@776014f5a3edd32f1ed19658b7b85c8c655945b0feacaedd92fe60e61a3c0ae2) has quit (/ME goes "yeeeeet..!")
18:18 <quark> No noise for me. 
18:18 <quark> It’s all good. 
18:18 <quark> What would IRC be without on/offs?
18:19 <quark> Preeeety boring!
18:19 <quark> Ah, he was gone. 
18:19 <quark> Well, I will twtxt this to him.  LOL.

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movq
www.uninformativ.de
 (40w ago)
↳ In-reply-to » Good morning. Driving the dot matrix printer from my little real-mode toy OS. 🖨️

@lyse@lyse.isobeef.org @dce@hashnix.club It’s pretty cool, I won’t argue that, but also really simple, to be completely honest. 😅 The BIOS already provides all you need to send data to the printer:

https://helppc.netcore2k.net/interrupt/bios-printer-services

The BIOS actually does provide a great deal of things, which, to me, was one of the most surprising learnings of this project (the project of writing a little 16-bit real-mode OS, that is). It often doesn’t feel like I was writing an operating system – it felt more like writing a normal program that just uses BIOS calls like we would use syscalls these days.

(I’ve also read a lot of warnings, like “don’t use the BIOS for this or that”. Mostly because it tends to be very slow.)

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bender
twtxt.net
 (46w ago)
↳ In-reply-to » linode's having a major outage (ongoing as of writing, over 24 hours in) and my friend runs a site i help out with on one of their servers. we didn't have recent backups so i got really anxious about possible severe data loss considering the situation with linode doesn't look great (it seems like a really bad incident).

@kat@yarn.girlonthemoon.xyz after 5 years or so with Linode, I started having little—but annoying—issues with them. Moved to Vultr and have been very happy with them since Ubuntu 16.04, so 9 years, and a little bit more.

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prologic
twtxt.net
 (46w ago)

Global update: Trump in Scotland says EU trade deal has 50-50 chance as tariff row grows. Gaza sees 9 more starvation deaths (122 total); UN says famine is deliberate. Thai-Cambodia clashes kill 16, displace 135k. US raid in Syria kills top ISIS leader & sons.

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lyse
lyse.isobeef.org
 (46w ago)
↳ In-reply-to » I was drafting support for showing “application icons” in my window manager, i.e. the Firefox icon in the titlebar:

@movq@www.uninformativ.de According to this screenshot, KDE still shows good old application icons: https://upload.wikimedia.org/wikipedia/commons/9/94/KDE_Plasma_5.21_Breeze_Twilight_screenshot.png

And GNOME used to have them, too: https://upload.wikimedia.org/wikipedia/commons/9/9f/Gnome-2-22_%284%29.png

I like the looks of your window manager. That’s using Wayland, right? The only thing on this screenshot to critique is all that wasted space of the windows not making use of the full screen!!!1 At least the file browser. 8-)

This drives me nuts when my workmates share their screens. I really don’t get it how people can work like that. You can’t even read the whole line in the IDE or log viewer with all the expanded side bars. And then there’s 200 pixels on the left and another 300 pixels on the right where the desktop wallpaper shows. Gnaa! There’s the other extreme end when somebody shares their ultra wide screen and I just have a “regularish” 16:10 monitor and don’t see shit, because it’s resized way too tiny to fit my width. Good times. :-D

Sorry for going off on a tangent here. :-) Back to your WM: It has the right mix of being subtle and still similar to motif. Probably close to the older Windowses. My memory doesn’t serve me well, but I think they actually got it fairly good in my opinion. Your purple active window title looks killer. It just fits so well. This brown one (https://www.uninformativ.de/blog/postings/2025-07-22/0/leafpads.png) gives me also classic vibes. Awww. We ran some similar brownish color scheme (don’t recall its name) on Win95 or Win98 for some time on the family computer. I remember other people visting us not liking these colors. :-D

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movq
www.uninformativ.de
 (46w ago)

Here’s an example of X11/Xlib being old and archaic.

X11 knows the data type “cardinal”. For example, the window property _NET_WM_ICON (which holds image data for icons) is an array of “cardinal”. I am already not really familiar with that word and I’m assuming that it comes from mathematics:

https://en.wikipedia.org/wiki/Cardinal_number

(It could also be a bird, but probably not: https://en.wikipedia.org/wiki/Cardinalidae)

We would probably call this an “integer” today.

EWMH says that icons are arrays of cardinals and that they’re 32-bit numbers:

https://specifications.freedesktop.org/wm-spec/latest-single/#id-1.6.13

So it’s something like 0x11223344 with 0x11 being the alpha channel, 0x22 is red, and so on.

You would assume that, when you retrieve such an array from the X11 server, you’d get an array of uint32_t, right?

Nope.

Xlib is so old, they use char for 8-bit stuff, short int for 16-bit, and long int for 32-bit:

https://x.org/releases/current/doc/libX11/libX11/libX11.html#Obtaining_and_Changing_Window_Properties

That is congruent with the general C data types, so it does make sense:

https://en.wikipedia.org/wiki/C_data_types

Now the funny thing is, on modern x86_64, the type long int is actually 64 bits wide.

The result is that every pixel in a Pixmap, for example, is twice as large in memory as it would need to be. Just because Xlib uses long int, because uint32_t didn’t exist, yet.

And this is something that I wouldn’t know how to fix without breaking clients.

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mc
feeds.twtxt.net
 (47w ago)

Status 2025-07-21
Morning, computer! Spending my days off trying to figure things out.
Some of them will occur in this post. I think best when I’m writing,
after all.

Intro

I’m back from a short vacation since a couple of weeks. I’m still
going to take a few days off every week for a while. I need the break.
It’s been way too many 12-16 hour workdays. I’m nominally working 80%
(~6 hour days), so I figure I’ve been working a lot for free.

Yeah, well, I like the TKey project to succeed. The ideas behind it
have implicatio … ⌘ Read more

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prologic
twtxt.net
 (47w ago)
↳ In-reply-to » After many weeks and probably at least a hundred hours of research, discussions and in-person viewing, I think I've finally come up with my Final Choices (shortlist) of a Hybrid Camper / Caravan that I think will suit my family and that I'll enjoy (far less work for me to setup and teardown). The one at the top of the list I'm leaning towards os the SWAG SCT16 Family 4B Media #Camping #Campers

@bender@twtxt.net That was one of the inputs into my research 🧐 So that’s already factored in. We bought our new truck (2025 GWM Canon) recently to replace the ‘ol 2nd hand Nissan Navara we bought that just had too many things go wrong with it, and I don’t have time or energy to learn to be a diesel mechanic haha 🤣 – So yes, the SCT-16 has a Tare (unladen weight) of 2150Kg and a maximum legal (ATM) weight of 2,800Kg.

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