Microsoft open-sources "the earliest DOS source code discovered to date"

https://cdn.arstechnica.net/wp-content/uploads/2026/04/86-DOS-artifact-and-IBM-PC.jpg
Microsoft released source code for the 86-DOS 1.00 kernel and PC-DOS 1.00 kernel, along with utilities like CHKDSK. The code was transcribed from paper printouts by the DOS Disassembly Group, a team of historians and preservationists.
https://techcrunch.com/wp-content/uploads/2026/05/spam-7f0198d1a59491c8.jpg
Scammers are abusing Microsoft's system to send fake emails from [email protected], potentially tricking people into thinking they're genuine. Microsoft is investigating and taking action to strengthen its detection and blocking mechanisms.

Wake up! 16b

https://content.pouet.net/files/screenshots/00106/00106210.jpg
The user created a 16-byte x86 real-mode DOS assembly program called "wakeup" that uses the video memory as a calculation space to draw an infinite Sierpinski fractal and bangs the speaker with that geometry. The program's sound is created by XORing against the environment, resulting in a unique and sensitive output that is highly dependent on the hardware and BIOS version.

Time to talk about my writerdeck

https://veronicaexplains.net/content/images/size/w160/2026/02/e7e8d217424253d8.jpg
The user converted an old laptop into a writerdeck, a dedicated writing device, by installing Debian in text mode, replacing the network stack with network-manager, and setting up neovim for writing. They also added features like tmux for terminal tiling, acpi for battery details, and light for backlight control, and set up automatic login and syncthing for syncing notes.

Green card seekers must leave U.S. to apply, Trump administration says

The Trump administration requires most foreigners to apply for green cards from their home countries, except in extraordinary circumstances. This change could make it harder for hundreds of thousands of people to obtain permanent residency in the US.

On The <dl> (2021)

https://benmyers.dev/images/on-the-dl/product-details.png
The HTML &lt;dl&gt; element represents a list of name-value pairs, which is a common UI pattern. It consists of &lt;dt&gt; for names and &lt;dd&gt; for values, allowing for semantic markup and improved accessibility.

Schlitz Is Gone, but First It's Getting One Last Hurrah

https://www.milwaukeemag.com/wp-content/uploads/2026/05/Schlitz-mural-1024x683.jpg
Pabst Brewing Co has discontinued Schlitz, a Milwaukee-based brand, due to increased costs. Wisconsin Brewing Co will brew the last Schlitz on May 23, with a limited release on June 27.

My two-part desk setup (2025)

https://storage.ghost.io/c/ce/27/ce27a3ef-1519-4f17-a161-c8cdf7793306/content/images/size/w1920/2025/11/L1000757-1.jpeg
The user changed their desk setup to face the room instead of the wall, creating a more open and comfortable space. They also split their desk into a digital and analog side, allowing for a clear separation of work and personal activities.

My I3-Emacs Integration

User is customizing their i3 and Emacs setup to integrate keybindings and window management. They've modified i3 to pass key events to Emacs if it's focused, and added Emacs functions to send messages back to i3 for window movement and terminal launching.

Sales and Dungeons: Thermal printer TTRPG utility

https://sales-and-dungeons.app/snd_example_screenshot-DmLOr8Ea.png
Sales &amp; Dungeons is a free, open-source tool for creating customizable handouts and references for Dungeons and Dragons sessions. It allows users to generate random content and organize sessions with a grid, and is available on GitHub with a community-driven workshop.

Judson's Last Ride

Please enable JS and disable any ad blocker

The Art of Money Getting

https://kk.org/cooltools/files/2026/05/TheArtOfMoneyGetting.jpg
P.T. Barnum's book "The Art of Money Getting" offers 20 rules for success, emphasizing finding one's natural abilities and avoiding debt. Key principles include being the best at one's work, keeping income above expenses, and maintaining a good reputation.

SpaceX launches Starship v3 rocket

https://cdn.mos.cms.futurecdn.net/DZ4Uavi49idDWQGhr4EuE5.jpg
SpaceX launched its Starship V3 rocket on its 12th suborbital test flight, reaching space despite a lost engine and failed boost back maneuver. The mission deployed 22 payloads and tested the rocket's heat shield tiles, bringing it one step closer to operational missions.

New map reveals lost roads of the Roman Empire

https://static.scientificamerican.com/dam/asset/bcce9619-01d3-4048-83c9-41a63d7554bb/sa0626Brug01.jpg?m=1778851821.765&w=600
Researchers created a high-resolution digital map of the Roman Empire's roads, revealing a network of 300,000 kilometers, nearly double the previously known total length. The map was created by combining historical datasets with modern topographical maps and satellite data, and it highlights the complexity and extent of the Roman road system.

Byrne's Euclid

https://www.c82.net/images/euclid/social-preview.jpg
A reproduction of Oliver Byrne’s celebrated work from 1847 plus interactive diagrams, cross references, and posters designed by Nicholas Rougeux Learn about Byrne’s original publication and how this site was made including design, typography, and more. Decorate your walls with a colorful detailed poster of every geometric illustration from Oliver Byrne’s colorful 1847 edition of Euclid’s Elements.

Hengefinder: Finding when the sun aligns with your street

https://victoriaritvo.com/blog/hengefinder/manhattanhenge_photo.jpg
The author built a tool called Hengefinder to find henge moments, where the sun aligns with a street, by calculating road bearings and sun azimuths. The tool uses a combination of astronomical data and binary search to find these rare geometric alignments.

.NET (OK, C#) finally gets union types

https://andrewlock.net/content/images/2026/unions.png
Union types are a feature in C# 15 that allows representing multiple types in a single variable, and they can be used to handle data that could be one of several unrelated types. The union keyword provides direct support for this scenario, and it can be used with switch expressions to automatically extract the inner case type.

Reverse engineering circuitry in a Spacelab computer from 1980

https://static.righto.com/images/cimsa/cimsa-diagram2-w500.jpg
The Spacelab computer was a 16-bit minicomputer built by CIMSA, using a French-built Mitra 125 MS processor. It had a 32-bit ALU and supported up to 128 KB of magnetic core memory.

Revised^7 Report on Scheme, Large: Procedural Fascicle Draft is now public

, , and , Editors of the Revised7 Report on the Algorithmic Language Scheme (small language) , , , and , Editors of the Revised6 Report on the Algorithmic Language Scheme

API proposed by Chrome: Declarative partial updates

https://developer.chrome.com/static/blog/declarative-partial-updates/image/thumbnail.png
The Chrome team has developed new APIs called Declarative Partial Updates to make it easier to deliver HTML in a less linear fashion, improving page load performance and enabling features like island architecture and streaming content. These APIs include new out-of-order streaming APIs using the <template> element and processing instruction placeholders, as well as new JavaScript APIs for ...

80386 microcode disassembled

The user and others extracted microcode from a high-resolution image of the 80386 CPU die, disassembled it, and found 215 entry points with new instructions and shared code. The microcode has a hidden security bug in IO permission bitmap handling and may have undocumented features or opcodes, but the exact nature of these is unclear.

Show HN: Anyone interested in a tool helps to explore C++ ASTs

https://uvic-aurora.github.io/acav-manual/images/acav-screenshot.png
ACAV is an interactive AST visualization tool for C, C++, and Objective-C built with Clang and Qt. It reads a JSON compilation database to explore real project ASTs interactively.

Air France and Airbus found guilty of manslaughter over 2009 plane crash

https://ichef.bbci.co.uk/news/480/cpsprodpb/d5b5/live/0f7f6c10-5511-11f1-9e5e-fb37d8c40e64.jpg.webp
Air France and Airbus found guilty of manslaughter over 2009 plane crash that killed 228 people. They will appeal the verdict and pay a maximum fine of €225,000 each.

PHP's Oddities

https://flowtwo.io/media/6a0cc116fa53c20f7a54e04a/banner.jpg
The author reflects on their experience with PHP, a language they initially didn't expect to use, but has grown to appreciate despite its quirks. PHP's array data structure is flexible but complex, and its type system has unintuitive features like uninitialized properties.

Kindle loyalists scramble as Amazon turns page on old e-readers

Please enable JS and disable any ad blocker

-​-dangerously-skip-reading-code

https://olano.dev/assets/img/bird.png
Assuming LLMs will fix code issues is irresponsible, but if organizational leadership mandates leveraging LLMs, we can adapt and move rigor elsewhere. This could involve standardized specifications and tests, checked into project repositories, to ensure accountability and understanding.

Making deep learning go brrrr from first principles (2022)

https://horace.io/img/perf_intro/gpus_go_brrr.webp
To improve deep learning model performance, first identify the bottleneck in your model, which can be compute, memory bandwidth, or overhead. Then, optimize accordingly, such as increasing compute intensity, reducing memory bandwidth costs, or minimizing overhead.

sp.h: Fixing C by giving it a high quality, ultra portable standard library

The user has created a high-quality, ultra-portable C standard library called sp.h1, which is a 15,000 line single header library written in plain C99. The library aims to modernize C by ditching null-terminated strings and providing a more ergonomic and performant alternative, while also being highly customizable and compatible with various platforms.

ICE Awards $25M Iris-Scanning Contract to Bi2 Technologies

https://substackcdn.com/image/fetch/$s_!Stcm!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fb22e7dca-a011-4721-aded-1e0da26b470e_1900x1214.png
ICE awarded Bi2 Technologies $25.1 million for iris-scanning technology to aid field operations. The contract grants ICE continuous access to Bi2's database of over 5 million booking records.

Spanish court declines to fine NordVPN over LaLiga piracy blocking order

https://torrentfreak.com/images/roadblock-blocked-feat-500x210.jpg
NordVPN was ordered to block IP addresses hosting LaLiga matches, but the court declined to fine the company due to lack of evidence of deliberate breach. The original injunction remains in place, with the case continuing as the court reviews NordVPN's technical objections.