Top Stories

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

274 points · arstechnica.com

A pre-1.0 build of MS-DOS — older than anything previously published — has been released under an MIT-style license, complete with the original assembly source. For software historians this is the equivalent of finding an earlier draft of the Magna Carta: it pre-dates the cleaned-up 1.25 and 2.0 sources Microsoft put up in 2014 and shows the operating system in a much rawer, CP/M-influenced form. Expect a wave of disassembly write-ups, comparisons to Tim Paterson’s 86-DOS, and at least one person trying to boot it on a modern x86 board just because.

Greg Brockman: Inside the 72 Hours That Almost Killed OpenAI

27 points · fs.blog

Brockman sits down with Shane Parrish to walk through the November 2023 board crisis from the inside — the texts, the all-night Zooms, the moment it looked like the company was actually going to evaporate. It’s the most detailed first-person account yet of how OpenAI’s governance broke and was reassembled, and it lands at a useful moment given how much of the current AI capex cycle rests on that one company holding together. Worth a listen for anyone who treats AI corporate structure as a real risk factor in their model.

Time to talk about my writerdeck

381 points · veronicaexplains.net

A “writerdeck” is a single-purpose laptop with no browser, no notifications, no Slack — just a text editor and the keyboard. The author walks through her build (a refurbished ThinkPad, a stripped-down Linux install, a hard block on the network at the kernel level) and, more interestingly, why it actually worked for her where productivity apps didn’t. The thread underneath is a small cottage industry of HN readers comparing their own focus rigs, from Freewrites to e-ink Kindles flashed with KOReader.

On The <dl>

400 points · benmyers.dev

A loving defense of HTML’s most-forgotten element. The description list — <dl>, <dt>, <dd> — turns out to be the right semantic tool for a surprising number of UI patterns (metadata blocks, key-value summaries, glossaries, even some forms), and the post is full of “oh, that’s what I should have used” moments. It’s a 2021 piece getting a fresh round of upvotes, which usually means people are still building accessible component libraries and discovering, again, that semantic HTML quietly does most of the work.

Why is Vivado 2026.1 dropping Linux support for free tier?

181 points · adaptivesupport.amd.com

AMD’s FPGA toolchain — inherited from the Xilinx acquisition — is quietly removing Linux support from the no-cost Vivado tier, restricting Linux to paid licenses. For hobbyists, university labs, and the open hardware community this is a meaningful hit; Vivado has been the de-facto path into Xilinx parts for a decade. The HN thread reads like a slow-rolling exodus to open toolchains (Yosys, nextpnr) and a reminder that “free tools” from big vendors are a strategic choice that can be revoked.

Amazon Web Services — Four Years and Out

215 points · adventuresinoss.com

A senior engineer’s frank exit interview after four years at AWS. He’s complimentary about the talent and the scale but blunt about the operational tax, the meeting load, and the “two-pizza team that needs six pizzas worth of reviews to ship anything.” It’s the kind of post that gets passed around on tech Slack channels for a week. For anyone hiring senior infra talent right now — or for PE folks looking at cloud-adjacent companies — it’s a useful data point on what kind of engineer is leaving Big Cloud and why.

—dangerously-skip-reading-code

152 points · olano.dev

A pointed riff on the new generation of coding agents that “ship features” without anyone — human or model — actually reading the diff. The author argues the industry is racing toward a workflow where reviews are theatrical, tests pass because they were written by the same model that wrote the bug, and the only quality gate left is “did production catch fire?” Whether you agree or not, it’s a clean articulation of the unease a lot of senior engineers have about the current AI-coding hype cycle.

162 points · techcrunch.com

An internal @microsoft.com notification address — the kind tenants implicitly trust — has been getting hijacked to fan out phishing links that sail straight past spam filters and SPF/DKIM checks. The mechanics are mostly “abuse of a legitimate notification template,” but the blast radius is huge because every Microsoft 365 tenant on Earth has whitelisted these sender domains. Expect a flurry of advisories from IT security teams over the next week.

Wake up! 16b

266 points · hellmood.111mb.de

A demoscene write-up of a 16-byte (yes, sixteen bytes) animated graphics intro for DOS. The author walks through every instruction, the trick that makes the palette cycle look like motion, and the broader art of squeezing visuals into a tweet’s worth of machine code. Pure craft, no LLMs involved — the kind of post that quietly reminds you why people fell in love with this stuff in the first place.