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We ran a Unix-like OS Xv6 on our home-built CPU with a home-built C compiler (2020)

news.ycombinator.com Likes Web 2025-08-28 18:20:08

How we ran a Unix-like OS (Xv6) on our home-built CPU with our home-built C compiler [Thanks for many comments and votes on Hacker News! ] It’s been two years since I started working as a software engineer. I sometimes tell my colleagues about a student project I did in my junior year of university, and it’s so well-received that I’m writing this post. Now, let me ask you a question. Have you ever designed your own ISA, built a processor of that ISA on FPGA, and built a compiler for it? Furth

Topics: cpu experiment group os xv6

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Paleontologists Find Skeleton That Weirdly Looks Exactly Like Barney the Purple Dinosaur

futurism.com Unknown 2025-08-29 04:30:31

We're a happy fa-m-ily! Funky Dino Deep in the heart of Texas, a goofy-looking dinosaur skeleton has been unearthed — and it's got a funny head that makes it look like a dead wringer for Barney, the purple lizard of 90s television fame with the annoyingly cheery voice. As the Houston Chronicle reports, the dinosaur in question — called Eryops megacephalus — has a wide, grinning smile on a large flat skull that sits on four squat legs. Paleontologist Andre LuJan told the newspaper that he foun

Topics: dinosaur dinosaurs lujan skull texas

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Tesla shows off its first fully autonomous delivery to convince us its self-driving cars work well

engadget.com Unknown 2025-08-29 03:38:05

Tesla's robotaxi service may have had some early hitches, but the company said it just successfully delivered a car autonomously. Using the same robotaxi technology, Tesla showed the delivery process of a Model Y from its Gigafactory Texas in Austin to a customer with a roughly 30-minute journey as seen in a video posted on X. Unlike the robotaxi service launch last week, the automated delivery had no safety monitor, nor anyone behind the wheel. Tesla's CEO, Elon Musk, also posted on X that the

Topics: delivery posted robotaxi service tesla

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The Great Illusion: When We Believed BeOS Would Save the World

news.ycombinator.com .Wp_Post_Author_Widget .Wp-Post-Author-Meta .Awpa-Display-Name 2025-08-29 06:54:05

A nostalgic dive into the Hacker News thread that in 2015 reminded us how beautiful we were when we dreamed in multithreading Once upon a time, in a galaxy not so far away called “the ’90s,” we still believed that the future of computing would be decided based on pure technical merit. What naivety! It was an era when an operating system could make you fall in love at first boot, when opening four videos simultaneously without hiccups seemed more magical than pulling a rabbit from a hat. BeOS wa

Topics: beos like operating thread time

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This Is How Much Interest You'll Earn by Depositing $10,000 Into a CD Now

cnet.com See Full Bio 2025-08-29 03:00:00

However much you have to deposit, a CD can help you grow your money reliably. Mensent Photography/Getty Images If you have some cash you can set aside for a while, a certificate of deposit can be a great way to grow it. Since your rate is locked in when you open a CD, your earnings will never change, even if rates drop after that. And with the Federal Reserve expected to cut interest rates as soon as July, now's the time to secure a great APY. Top CDs currently offer up to 4.50% APY -- more th

Topics: apy cd deposit savings year

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I Used AI to Track My Blood Sugar With My Oura Ring. These 3 Takeaways Surprised Me

cnet.com See Full Bio 2025-08-29 06:00:05

I've used my Oura Ring the past few years to track my sleep, recovery and stress. But recently, Oura unlocked a new insight I didn't know I needed: blood sugar levels. I'm constantly experimenting with the latest health tech, so I was naturally intrigued when I learned that Oura Ring partnered with Dexcom's Stelo, a continuous glucose monitor designed for people without diabetes. The goal of this collaboration is to help everyday people like me understand how food and general eating habits impac

Topics: blood body glucose oura sugar

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Apple @ Work: LambdaTest puts Apple Silicon to work for GenAI testing with MacStadium

9to5mac.com Bradley C 2025-08-29 05:00:00

Apple @ Work is exclusively brought to you by Mosyle, the only Apple Unified Platform. Mosyle is the only solution that integrates in a single professional grade platform all the solutions necessary to seamlessly and automatically deploy, manage & protect Apple devices at work. Over 45,000 organizations trust Mosyle to make millions of Apple devices work ready with no effort and at an affordable cost. Request your EXTENDED TRIAL today and understand why Mosyle is everything you need to work with

Topics: apple lambdatest mosyle silicon work

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Tesla shows off its first fully autonomous delivery to convince us its self-driving cars work

engadget.com Unknown 2025-08-29 08:38:05

Tesla's robotaxi service may have had some early hitches, but the company said it just successfully delivered a car autonomously. Using the same robotaxi technology, Tesla showed the delivery process of a Model Y from its Gigafactory Texas in Austin to a customer with a roughly 30-minute journey as seen in a video posted on X. Unlike the robotaxi service launch last week, the automated delivery had no safety monitor, nor anyone behind the wheel. Tesla's CEO, Elon Musk, also posted on X that the

Topics: delivery posted robotaxi service tesla

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ZeQLplus: Terminal SQLite Database Browser

news.ycombinator.com Unknown 2025-08-29 04:32:02

ZeQL+ : Terminal SQLite Database Browser Features Open any SQLite database file Very fast Runs in a Terminal / CMD window Tiny executable with no dependencies List all tables in the database to browse Paginated view of table rows Run custom SQL queries and view the results Cross platform: macOS, Linux, Windows Open source Install Pre-built binaries for macOS, Linux, Windows 10+ are available as zip files in the releases page. Just extract and run directly with no need to install. Ho

Topics: database linux macos sqlite zeql

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Microsoft extends free Windows 10 security updates into 2026

news.ycombinator.com Unknown 2025-08-25 09:16:34

Last fall, Microsoft announced that individuals who wanted to keep using Windows 10 past its official end-of-support date could do so by opting into the company's Extended Security Update (ESU) program at a cost of $30 per PC. That payment would get users a single year of additional security updates. Today, less than four months before that October 14, 2025, cutoff, Microsoft is announcing additional options for people who can't or don't want to pay that fee. Individuals who want to pay $30 for

Topics: 10 microsoft updates users windows

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Unheard works by Erik Satie to premiere 100 years after his death

news.ycombinator.com Dalya Alberge 2025-08-29 02:19:44

Twenty-seven previously unheard works by Erik Satie, from playful cabaret songs to minimalist nocturnes, are to be premiered a century after the death of the notoriously eccentric and innovative French composer. Painstakingly pieced together from hundreds of small notebooks, most of the new works are thought to have been written in the bohemian bistros of Montmartre in Paris where Satie worked as a pianist in the early decades of the 20th century. James Nye, a British musicologist and composer

Topics: composer nye previously said satie

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We ran a Unix-like OS Xv6 on our home-built CPU with a home-built C compiler

news.ycombinator.com Likes Web 2025-08-29 04:20:08

How we ran a Unix-like OS (Xv6) on our home-built CPU with our home-built C compiler [Thanks for many comments and votes on Hacker News! ] It’s been two years since I started working as a software engineer. I sometimes tell my colleagues about a student project I did in my junior year of university, and it’s so well-received that I’m writing this post. Now, let me ask you a question. Have you ever designed your own ISA, built a processor of that ISA on FPGA, and built a compiler for it? Furth

Topics: cpu experiment group os xv6

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Lenovo’s Legion Go S With SteamOS Is the Only Real Alternative to a Steam Deck

gizmodo.com Kyle Barr 2025-08-29 03:00:03

2025 For the last several years, most of us thinking about buying a handheld PC have heard the refrain “just get a Steam Deck.” The reasons are two-fold: one, the OLED version at $550 is the cheapest of its class, and two, it’s so damned easy to use thanks to SteamOS. No other company has come close to offering similar bang for the buck—until now. At $600, Lenovo’s Legion Go S with SteamOS is a superior handheld for on-the-go gaming compared to the Windows version released earlier this year, w

Topics: deck games legion steam steamos

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So Long, Blue Screen of Death. Amazingly, You'll Be Missed

wired.com Craig Grannell 2025-08-28 09:37:17

For decades, the Blue Screen of Death, or BSOD to its friends, has instilled a mix of panic, dread, exasperation, and rage across countless Windows users. But now, Microsoft is getting ready to retire it. According to a Microsoft blog post, the Windows 11 crash screen—or, as the company puts it, “unexpected restart screen”—will soon adopt a distinctly more minimalist vibe. Along with scrapping the blue (in favor of a perhaps even more dread-inducing black), the revamp also ditches the sad face

Topics: blue death microsoft screen windows

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I hated Google Photos’ AI search feature, but after the latest update, I love it

androidauthority.com Unknown 2025-08-29 06:00:10

Joe Maring / Android Authority At Google I/O 2024, Google introduced the world to “Ask Photos.” It was a new Gemini-powered search experience for Google Photos that would enable you to use natural language to easily find pictures in your library. The pitch sounded great and like a legitimately good use of AI. Unfortunately, Ask Photos’ implementation fell short. I’ve been using Ask Photos for the last several months, and in almost every scenario, it’s been significantly worse than the old sear

Topics: ask google new photos search

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The Original Macintosh: Calculator Construction Set

news.ycombinator.com Unknown 2025-08-26 21:21:38

The Original Macintosh: 35 of 125 Calculator Construction Set Author: Andy Hertzfeld Date: February 1982 Characters: Chris Espinosa, Steve Jobs, Donn Denman Topics: Software Design Summary: Chris tries to make a Steve-approved calculator The Calculator Chris Espinosa was one of Apple's earliest and youngest employees, who started work for the company at the ripe age of 14. He left Apple in 1978 to go to college at UC Berkeley, but he continued to do freelance work during the school year, like wr

Topics: calculator chris macintosh quickdraw steve

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Facebook is starting to feed its AI with private, unpublished photos

news.ycombinator.com Tina Nguyen 2025-08-29 07:08:28

is a senior reporter for The Verge, covering the Trump administration, Elon Musk’s takeover of the federal government, and the tech industry’s embrace of the MAGA movement. For years, Meta trained its AI programs using the billions of public images uploaded by users onto Facebook and Instagram’s servers. Now, it’s also hoping to access the billions of images that users haven’t uploaded to those servers. Meta tells The Verge that it’s not currently training its AI models on those photos, but it

Topics: ai facebook meta photos roll

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bootc-image-builder: Build your entire OS from a Containerfile

news.ycombinator.com Unknown 2025-08-26 03:01:07

A container to create disk images from bootc container inputs, especially oriented towards Fedora/CentOS bootc or derivatives. 🔨 Installation Have podman installed on your system. Either through your systems package manager if you're on Linux or through Podman Desktop if you are on macOS or Windows. If you want to run the resulting virtual machine(s) or installer media you can use qemu. A very nice GUI extension for Podman Desktop is also available. The command line examples below can be all

Topics: anaconda aws bootc centos image

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Facebook is starting to feed its AI with private, unpublished photos

theverge.com Tina Nguyen 2025-08-29 11:30:00

is a senior reporter for The Verge, covering the Trump administration, Elon Musk’s takeover of the federal government, and the tech industry’s embrace of the MAGA movement. For years, Meta’s trained its AI programs using the billions of public images uploaded by users onto Facebook and Instagram’s servers. But apparently, Meta has decided to try training its AI on the billions of images that users haven’t uploaded to those servers. On Friday, TechCrunch reported that Facebook users trying to p

Topics: ai facebook meta photos users

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Reinforcement learning, explained with a minimum of math and jargon

news.ycombinator.com Timothy B. Lee 2025-08-26 07:29:59

It’s Agent Week at Understanding AI! This week I’m going to publish a series of articles explaining the most important AI trend of 2025: agents! Today is a deep dive into reinforcement learning, the training technique that made agentic models like Claude 3.5 Sonnet and o3 possible. Today’s article is available for free, but some articles in the series—including tomorrow’s article on MCP and tool use—will be for paying subscribers only. I’m offering a 20 percent discount on annual subscriptions

Topics: learning model reinforcement ross training

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Glass nanostructures reflect nearly all visible light, challenging assumptions

news.ycombinator.com Singapore University Of Technology 2025-08-26 10:23:48

This article has been reviewed according to Science X's editorial process and policies . Editors have highlighted the following attributes while ensuring the content's credibility: Nanoscale 3D printing of glass. Credit: Science Advances (2025). DOI: 10.1126/sciadv.adv0267 A research team led by SUTD has created nanoscale glass structures with near-perfect reflectance, overturning long-held assumptions about what low-index materials can do in photonics. For decades, glass has been a reliable

Topics: glass light nanoscale photonic reflectance

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Microsoft Retires Legendary 'Blue Screen of Death' After 40 Years of Frowny Faces

cnet.com See Full Bio 2025-08-29 18:52:00

Like Pudding Pops and Benetton sweaters, another 1980s icon is gone. After 40 years of delivering the tragic news of a PC crash to Windows users, Microsoft's infamous "blue screen of death" will be going away. But not to worry -- a black screen of death will be replacing it, albeit without the sad emoticon face. The infamous "blue screen of death" has been around since Windows 1.0 came out in 1985. Named for its bright blue color, it's a critical error screen that pops up on computers using the

Topics: black death microsoft screen windows

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Nvidia notches 5-day win streak as it hits record highs

cnbc.com Samantha Subin 2025-08-29 23:00:31

Jensen Huang, CEO of Nvidia, speaks during the Viva Technology conference dedicated to innovation and startups at Porte de Versailles exhibition center in Paris, France, on June 11, 2025. Nvidia stock rose for a fifth consecutive day Friday as the chipmaker notched fresh highs and investors shook off China concerns. The rise in shares has helped the artificial intelligence chipmaking giant regain its seat as the most valuable company. The stock is up 66% since hitting its 52-week low in early

Topics: market microsoft nvidia stock trillion

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CFOs want AI that pays: real metrics, not marketing demos

venturebeat.com James Thomason 2025-08-29 23:00:00

This article is part of VentureBeat’s special issue, “The Real Cost of AI: Performance, Efficiency and ROI at Scale.” Read more from this special issue. Recent surveys and VentureBeat’s conversations with CFOs suggest the honeymoon phase of AI is rapidly drawing to a close. While 2024 was dominated by pilot programs and proof-of-concept demonstrations, in mid-2025, the pressure for measurable results is intensifying, even as CFO interest in AI remains high. According to a KPMG survey of 300 U.

Topics: ai cfos financial metrics value

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Why your enterprise AI strategy needs both open and closed models: The TCO reality check

venturebeat.com Sean Michael Kerner 2025-08-29 23:00:00

This article is part of VentureBeat’s special issue, “The Real Cost of AI: Performance, Efficiency and ROI at Scale.” Read more from this special issue. For the last two decades, enterprises have had a choice between open-source and closed proprietary technologies. The original choice for enterprises was primarily centered on operating systems, with Linux offering an open-source alternative to Microsoft Windows. In the developer realm, open-source languages like Python and JavaScript dominate,

Topics: closed model models open source

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The inference trap: How cloud providers are eating your AI margins

venturebeat.com Shubham Sharma 2025-08-29 23:00:00

This article is part of VentureBeat’s special issue, “The Real Cost of AI: Performance, Efficiency and ROI at Scale.” Read more from this special issue. AI has become the holy grail of modern companies. Whether it’s customer service or something as niche as pipeline maintenance, organizations in every domain are now implementing AI technologies — from foundation models to VLAs — to make things more efficient. The goal is straightforward: automate tasks to deliver outcomes more efficiently and s

Topics: ai cloud costs inference infrastructure

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Model minimalism: The new AI strategy saving companies millions

venturebeat.com Emilia David 2025-08-29 23:00:00

This article is part of VentureBeat’s special issue, “The Real Cost of AI: Performance, Efficiency and ROI at Scale.” Read more from this special issue. The advent of large language models (LLMs) has made it easier for enterprises to envision the kinds of projects they can undertake, leading to a surge in pilot programs now transitioning to deployment. However, as these projects gained momentum, enterprises realized that the earlier LLMs they had used were unwieldy and, worse, expensive. Ente

Topics: cost model models said use

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Google Photos won’t downgrade your edited HDR pictures to SDR anymore

androidauthority.com Unknown 2025-08-29 23:43:18

Joe Maring / Android Authority TL;DR HDR photos in Google Photos now keep their full dynamic range and HDR metadata when edited with tools like Photo Unblur and Magic Eraser. The app now has an “Ultra HDR” tool for brightening images. SDR photos can now be enhanced to HDR. Google is rolling out some improvements to how high dynamic range (HDR) and standard dynamic range (SDR) images are edited in the Photos app. The update will keep HDR photos from getting downgraded to SDR. Google is also u

Topics: google hdr images photos sdr

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Cloudflare blocks largest DDoS attack - here's how to protect yourself

zdnet.com Steven Vaughan-Nichols 2025-08-29 23:23:39

oxygen/Getty Cloudflare is a robust content delivery network (CDN) that specializes in providing protection against distributed denial of service (DDoS) attacks. Last month, Cloudflare blocked the largest DDoS attack in internet history. This assault peaked at a staggering 7.3 terabits per second (Tbps). That's a data deluge, equivalent to streaming nearly 10,000 high-definition movies in under a minute. The attack targeted an unnamed hosting provider using Cloudflare's Magic Transit DDoS pro

Topics: attack attacks cloudflare ddos traffic

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A New Threads Feature Saves You From Seeing and Posting Spoilers: Here's How It Works

cnet.com See Full Bio 2025-08-30 03:18:18

Social media can accidentally spoil a streaming movie or show for those who haven't yet watched it. Threads, the popular social media platform from Meta, now has a new feature that could save you from spoiling your next watch. The new feature allows users to mark media and text posts as spoilers. If it's a photo, the spoiler will then appear blurred in feeds, and text will be grayed out. Clicking on both types makes the spoiler visible. Netflix and Marvel are the first major studios to use the

Topics: feature posts spoiler text threads

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Latest Tech News

We ran a Unix-like OS Xv6 on our home-built CPU with a home-built C compiler (2020)

Paleontologists Find Skeleton That Weirdly Looks Exactly Like Barney the Purple Dinosaur

Tesla shows off its first fully autonomous delivery to convince us its self-driving cars work well

The Great Illusion: When We Believed BeOS Would Save the World

This Is How Much Interest You'll Earn by Depositing $10,000 Into a CD Now

I Used AI to Track My Blood Sugar With My Oura Ring. These 3 Takeaways Surprised Me

Apple @ Work: LambdaTest puts Apple Silicon to work for GenAI testing with MacStadium

Tesla shows off its first fully autonomous delivery to convince us its self-driving cars work

ZeQLplus: Terminal SQLite Database Browser

Microsoft extends free Windows 10 security updates into 2026

Unheard works by Erik Satie to premiere 100 years after his death

We ran a Unix-like OS Xv6 on our home-built CPU with a home-built C compiler

Lenovo’s Legion Go S With SteamOS Is the Only Real Alternative to a Steam Deck

So Long, Blue Screen of Death. Amazingly, You'll Be Missed

I hated Google Photos’ AI search feature, but after the latest update, I love it

The Original Macintosh: Calculator Construction Set

Facebook is starting to feed its AI with private, unpublished photos

bootc-image-builder: Build your entire OS from a Containerfile

Facebook is starting to feed its AI with private, unpublished photos

Reinforcement learning, explained with a minimum of math and jargon

Glass nanostructures reflect nearly all visible light, challenging assumptions

Microsoft Retires Legendary 'Blue Screen of Death' After 40 Years of Frowny Faces

Nvidia notches 5-day win streak as it hits record highs

CFOs want AI that pays: real metrics, not marketing demos

Why your enterprise AI strategy needs both open and closed models: The TCO reality check

The inference trap: How cloud providers are eating your AI margins

Model minimalism: The new AI strategy saving companies millions

Google Photos won’t downgrade your edited HDR pictures to SDR anymore

Cloudflare blocks largest DDoS attack - here's how to protect yourself

A New Threads Feature Saves You From Seeing and Posting Spoilers: Here's How It Works

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