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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 2026-03-24 15:20:08

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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The Death of the Middle-Class Musician

news.ycombinator.com Luc Rinaldi 2026-03-25 01:06:31

Rollie Pemberton was barely a teenager when he started rapping. His hometown, Edmonton, didn’t have much of a hip-hop scene in the early aughts, so he honed his craft online. He plugged an old-school microphone into his mom’s desktop computer, recorded a few verses, later turned them into tracks, and sent them out into the burgeoning music blogosphere. Within a few years, he’d adopted the emcee name Cadence Weapon and earned a reputation as a shrewd critic and sharp lyricist. This work didn’t p

Topics: artists industry music pemberton says

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Solving `Passport Application` with Haskell

news.ycombinator.com Unknown 2026-03-25 02:01:15

There's a trend at the moment of solving online games with programming, let's do one from the UK called Passport Application, which is developed by "His Majesty's Passport Office" or HMPO. It's a cultural phenomenon in the UK: despite being quite expensive (about £100 just to start) for the standard online version (a masterpiece of minimalist design, entirely text-based), most British play the game, and do so every 10 years or so. It's an adventure puzzle document collection game. The premise i

Topics: applicant born father parent person

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Today's NYT Mini Crossword Answers for Sunday, June 29

cnet.com See Full Bio 2026-03-25 05:06:58

Gael Cooper CNET editor Gael Fashingbauer Cooper, a journalist and pop-culture junkie, is co-author of "Whatever Happened to Pudding Pops? The Lost Toys, Tastes and Trends of the '70s and '80s," as well as "The Totally Sweet '90s." She's been a journalist since 1989, working at Mpls.St.Paul Magazine, Twin Cities Sidewalk, the Minneapolis Star Tribune, and NBC News Digital. She's Gen X in birthdate, word and deed. If Marathon candy bars ever come back, she'll be first in line.

Topics: 1989 author cooper gael journalist

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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 2026-03-25 03:54:05

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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The Book Cover Trend of Text on Old Paintings

news.ycombinator.com Elisabeth Egan 2026-03-22 00:46:20

Like fashion trends, fads in book covers come and go. One year, the backs of women’s heads might be all the rage; the next, soft focus photography. And who can forget the exploding flower craze? Or the proliferation of flames on jackets, from thrillers to science fiction to self-help? But the look that’s commanding today’s runways — a.k.a. bookshelves — is not so incendiary. It tends to lay blaringly bright type in a sans-serif font atop a painting, usually a few centuries old but not always. F

Topics: art book covers fiction type

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Today's Wordle Hints, Answer and Help for June 29, #1471

cnet.com See Full Bio 2026-03-25 05:00:03

Gael Cooper CNET editor Gael Fashingbauer Cooper, a journalist and pop-culture junkie, is co-author of "Whatever Happened to Pudding Pops? The Lost Toys, Tastes and Trends of the '70s and '80s," as well as "The Totally Sweet '90s." She's been a journalist since 1989, working at Mpls.St.Paul Magazine, Twin Cities Sidewalk, the Minneapolis Star Tribune, and NBC News Digital. She's Gen X in birthdate, word and deed. If Marathon candy bars ever come back, she'll be first in line.

Topics: 1989 author cooper gael journalist

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The AI Backlash Keeps Growing Stronger

wired.com Reece Rogers 2026-03-24 19:30:00

Before Duolingo wiped its videos from TikTok and Instagram in mid-May, social media engagement was one of the language-learning app’s most recognizable qualities. Its green owl mascot had gone viral multiple times and was well known to younger users—a success story other marketers envied. But, when news got out that Duolingo was making the switch to become an “AI-first” company, planning to replace contractors who work on tasks generative AI could automate, public perception of the brand soured

Topics: ai duolingo generative people tasks

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OpenAI Loses 4 Key Researchers to Meta

wired.com Kylie Robison 2026-03-25 05:16:10

Four OpenAI researchers are leaving the company to go to Meta, two sources confirm to WIRED. Shengjia Zhao, Shuchao Bi, Jiahui Yu, and Hongyu Ren have joined Meta’s superintelligence team. Their OpenAI Slack profiles have been deactivated. The Information first reported on the departures. It’s the latest in a series of aggressive moves by Mark Zuckerberg, who is racing to catch up to OpenAI, Anthropic and Google in building artificial general intelligence. Earlier this month, OpenAI CEO Sam Al

Topics: bi meta model openai source

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Nvidia RTX 5060 Ti 8GB vs. 16GB Tested Across PCIe 3.0, 4.0 and 5.0

techspot.com Steven Walton 2026-03-25 03:36:00

Recently we examined how PCI Express bandwidth influences the performance of the 8 GB Radeon RX 9060 XT when local video memory (VRAM) is exceeded. The entire purpose of that testing was to push past the VRAM limit, which, unfortunately for 8 GB graphics cards, is a relatively easy task in 2025. This can happen even when using settings that would otherwise be highly playable, as demonstrated by the 16 GB model. This is an interesting test for several reasons, the most notable being that PCIe ba

Topics: 16 gb model pcie performance

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Nvidia RTX 5060 Ti 8GB vs. 16GB Tested Across PCIe 3.0, 4.0 and 5.0

techspot.com Steven Walton 2026-03-25 03:41:00

Recently we examined how PCI Express bandwidth influences the performance of the 8 GB Radeon RX 9060 XT when local video memory (VRAM) is exceeded. The entire purpose of that testing was to push past the VRAM limit, which, unfortunately for 8 GB graphics cards, is a relatively easy task in 2025. This can happen even when using settings that would otherwise be highly playable, as demonstrated by the 16 GB model. This is an interesting test for several reasons, the most notable being that PCIe ba

Topics: 16 gb model pcie performance

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Tech Workers Say They're Rapidly Being Replaced by AI

futurism.com Unknown 2026-03-25 01:15:12

"She claimed it was outperforming us." As AI conquers every human-driven endeavor at a breathless pace, from bombing military targets to teaching kids, we gotta ask ourselves a scary question: what is it doing to the workplace right now, and in the future? Sure, we have Dario Amodei, CEO of hotshot AI company Anthropic, saying he foresees AI models erasing 50 percent of entry-level white collar positions throughout the entire job market, but that could be all marketing hype. To get to the bot

Topics: ai code company marketing people

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People Are Being Involuntarily Committed, Jailed After Spiraling Into "ChatGPT Psychosis"

futurism.com Unknown 2026-03-25 02:00:14

As we reported earlier this month, many ChatGPT users are developing all-consuming obsessions with the chatbot, spiraling into severe mental health crises characterized by paranoia, delusions, and breaks with reality. The consequences can be dire. As we heard from spouses, friends, children, and parents looking on in alarm, instances of what's being called "ChatGPT psychosis" have led to the breakup of marriages and families, the loss of jobs, and slides into homelessness. And that's not all.

Topics: ai chatgpt mental people said

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Are portable AC units viable at home? My verdict after testing one during a heat wave

zdnet.com Maria Diaz 2026-03-25 00:00:15

ZDNET's key takeaways The EcoFlow Wave 3 is a portable air conditioner and heater that costs $1,299 on its own and $1,399 with a battery, a limited-time discount This is a portable air conditioner and heater that is more powerful than its predecessor It is also off-grid ready for camping, RVing, and even helping in a pinch.The Wave 3 is pricey, loud in some settings, and is not as efficient in extreme heat, direct sun, or tent camping. $1,299 at Amazon Many parts of the US are sizzling right

Topics: air degrees heat temperature wave

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Parsing JSON in Forty Lines of Awk

news.ycombinator.com Mohamed Akram 2026-03-25 05:23:48

JSON is not a friendly format to the Unix shell — it’s hierarchical, and cannot be reasonably split on any character (other than the newline, which is not very useful) as that character might be included in a string. There are well-known tools such as jq that let you correctly parse JSON documents in the shell, but all require an additional dependency. Another option is to use Python, which is ubiquitous enough that it can be expected to be installed on virtually every machine, and for new proje

Topics: json key object substr type

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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 2026-03-25 01:20:08

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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This Town Started Charging for Trash by the Bag. Here’s What Happened

gizmodo.com Tik Root 2026-03-25 03:00:40

Until a few years ago, the town of Plympton, Massachusetts, was quite literally throwing away money. People were producing so much trash that it was threatening to put the municipal transfer station out of business. Under the town’s system, residents would buy a $240 sticker for their cars that allowed them yearlong access to the dump, where they could dispose of as much garbage as they wished. But the sheer volume, combined with climbing landfill fees, meant that this service was costing the l

Topics: bag people plympton said trash

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In a wild time for copyright law, the US Copyright Office has no leader

arstechnica.com Unknown 2026-03-25 02:32:57

It’s a tumultuous time for copyright in the United States, with dozens of potentially economy-shaking AI copyright lawsuits winding through the courts. It’s also the most turbulent moment in the US Copyright Office’s history. Described as “sleepy” in the past, the Copyright Office has taken on new prominence during the AI boom, issuing key rulings about AI and copyright. It also hasn’t had a leader in more than a month. In May, Copyright Register Shira Perlmutter was abruptly fired by email by

Topics: ai copyright email office perlmutter

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Missing Heritability: Much More Than You Wanted to Know

news.ycombinator.com Scott Alexander 2026-03-25 03:13:00

The Story So Far The mid-20th century was the golden age of nurture. Psychoanalysis, behaviorism, and the spirit of the ‘60s convinced most experts that parents, peers, and propaganda were the most important causes of adult personality. Starting in the 1970s, the pendulum swung the other way. Twin studies shocked the world by demonstrating that most behavioral traits - including socially relevant traits like IQ - were substantially genetic. Typical estimates for adult IQ found it was about 60%

Topics: genes heritability people studies twin

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Korean students seek 'digital undertakers' amid US visa social media screening

news.ycombinator.com Lee Jung-Joo 2026-03-21 13:10:34

The US Embassy in Seoul resumed accepting applications for student and exchange visas but requested that applicants make any private social media accounts public, prompting some South Korean students pursuing studies in the US to seek the help of "digital undertakers." On June 20, the US Embassy in Seoul announced that it will resume taking in applications for its F, M and J nonimmigrant visas, saying it will conduct “thorough vetting” of applicants’ presence on social media. In a notice poste

Topics: kim media online personal social

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Today's NYT Mini Crossword Answers for Saturday, June 28

cnet.com See Full Bio 2026-03-25 00:34:49

Gael Cooper CNET editor Gael Fashingbauer Cooper, a journalist and pop-culture junkie, is co-author of "Whatever Happened to Pudding Pops? The Lost Toys, Tastes and Trends of the '70s and '80s," as well as "The Totally Sweet '90s." She's been a journalist since 1989, working at Mpls.St.Paul Magazine, Twin Cities Sidewalk, the Minneapolis Star Tribune, and NBC News Digital. She's Gen X in birthdate, word and deed. If Marathon candy bars ever come back, she'll be first in line.

Topics: 1989 author cooper gael journalist

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Meta is offering multimillion-dollar pay for AI researchers, but not $100M ‘signing bonuses’

techcrunch.com Julie Bort 2026-03-25 00:02:42

Meta is definitely offering hefty multimillion-dollar pay packages to AI researchers when wooing them to its new superintelligence lab. But no one is really getting a $100 million “signing bonus,” according to a poached researcher and comments from a leaked internal meeting. During a company-wide all-hands meeting on Thursday leaked to The Verge, some of Meta’s top executives were asked about the bonuses that OpenAI CEO Sam Altman said Meta had offered to top researchers. Meta’s CTO Andrew Bos

Topics: ai meeting meta million openai

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Here’s why M4 MacBook Pro is one of the best upgrades you can make right now

9to5mac.com Michael Burkhardt 2026-03-25 16:57:45

Last October, Apple announced the M4 MacBook Pro. On the surface, it looks like yet another MacBook Pro spec bump. However, there are a number of key features that make it worth upgrading to, even if you already have an older 14″ MacBook Pro. Why M4? There’s recently been a pretty big flip in MacBook Pro pricing, which gradually took place over the past year or so: First, Apple introduced a new entry-level MacBook Pro at $1599 in 2023 with baseline M3 Then, it upped the base memory to 16GB a

Topics: apple m4 macbook performance pro

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Show HN: Shouldiuse.dev – Software dependency health checker

news.ycombinator.com Unknown 2026-03-25 15:42:21

New Remote MCP Server Empower LLMs to score a dependency before using them

Topics: dependency empower llms mcp new

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Spark AI (YC W24) is hiring a full-stack engineer in SF (founding team)

news.ycombinator.com Unknown 2026-03-25 16:01:03

About Us ⚡️ Join us to accelerate the energy transition with technology. At Spark, we’re building the AI engine behind the next generation of renewable energy infrastructure. Our mission is simple yet ambitious: To help renewable energy developers build solar farms, battery storage plants, and related projects more efficiently. If you’re excited to see your products directly accelerate the energy transition, read on. We’re already powering decision-making for industry leaders like Colliers En

Topics: ai building energy excited experience

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Why ‘Superman’ Has So Many Superheroes in It

gizmodo.com Germain Lussier 2026-03-25 16:00:55

Even before seeing it, it’s clear there are many, many things that set James Gunn’s Superman apart from other versions of the character. One is that, though this is very much a Superman movie, Superman interacts with a bunch of other superheroes. There’s the Guy Gardner Green Lantern, Mister Terrific, Hawkgirl, and more. It was an interesting choice for Gunn to make, especially since this is our first real glimpse at the larger DC Universe he’s helping to create. So we asked him about it. Speak

Topics: gunn make powerful superman versions

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Today's Wordle Hints, Answer and Help for June 28, #1470

cnet.com See Full Bio 2026-03-25 15:00:04

Gael Cooper CNET editor Gael Fashingbauer Cooper, a journalist and pop-culture junkie, is co-author of "Whatever Happened to Pudding Pops? The Lost Toys, Tastes and Trends of the '70s and '80s," as well as "The Totally Sweet '90s." She's been a journalist since 1989, working at Mpls.St.Paul Magazine, Twin Cities Sidewalk, the Minneapolis Star Tribune, and NBC News Digital. She's Gen X in birthdate, word and deed. If Marathon candy bars ever come back, she'll be first in line.

Topics: 1989 author cooper gael journalist

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'Persona 5: The Phantom X' Brings the Series to Your Phone—and It's Shockingly Good

wired.com Megan Farokhmanesh 2026-03-25 15:11:56

Persona games are herculean efforts to finish. A single playthrough of any game in the main series, which includes everything from saving the world to studying for finals, frequently clocks in at around 100 hours. Much of that time is spent building relationships with the game’s characters and world by hanging out with friends, doing mundane tasks like laundry, or finding new parts of the city to explore. It creates a dedication that leaves many players so attached to each game’s cast that they’

Topics: game like persona phantom world

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

venturebeat.com Sean Michael Kerner 2026-03-25 20:00:00

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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Gareth Edwards Is Glad You Liked ‘Rogue One,’ Just Don’t Ask Him to Make Another ‘Star Wars’

gizmodo.com Cheryl Eddy 2026-03-25 20:15:50

Gareth Edwards, who directed Godzilla (2014), The Creator, and the brand-new Jurassic World Rebirth, is always going to be asked about his time in the galaxy far, far away. That’s just the nature of Star Wars and, more specifically, Star Wars fans, most of whom look very fondly upon 2016’s Rogue One: A Star Wars Story—especially in the wake of Andor‘s two-season run on Disney+. Edwards is thrilled for all the goodwill, but that doesn’t mean he’s hoping for a return to that world. “I’m very happ

Topics: edwards people rogue star wars

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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)

The Death of the Middle-Class Musician

Solving `Passport Application` with Haskell

Today's NYT Mini Crossword Answers for Sunday, June 29

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

The Book Cover Trend of Text on Old Paintings

Today's Wordle Hints, Answer and Help for June 29, #1471

The AI Backlash Keeps Growing Stronger

OpenAI Loses 4 Key Researchers to Meta

Nvidia RTX 5060 Ti 8GB vs. 16GB Tested Across PCIe 3.0, 4.0 and 5.0

Nvidia RTX 5060 Ti 8GB vs. 16GB Tested Across PCIe 3.0, 4.0 and 5.0

Tech Workers Say They're Rapidly Being Replaced by AI

People Are Being Involuntarily Committed, Jailed After Spiraling Into "ChatGPT Psychosis"

Are portable AC units viable at home? My verdict after testing one during a heat wave

Parsing JSON in Forty Lines of Awk

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

This Town Started Charging for Trash by the Bag. Here’s What Happened

In a wild time for copyright law, the US Copyright Office has no leader

Missing Heritability: Much More Than You Wanted to Know

Korean students seek 'digital undertakers' amid US visa social media screening

Today's NYT Mini Crossword Answers for Saturday, June 28

Meta is offering multimillion-dollar pay for AI researchers, but not $100M ‘signing bonuses’

Here’s why M4 MacBook Pro is one of the best upgrades you can make right now

Show HN: Shouldiuse.dev – Software dependency health checker

Spark AI (YC W24) is hiring a full-stack engineer in SF (founding team)

Why ‘Superman’ Has So Many Superheroes in It

Today's Wordle Hints, Answer and Help for June 28, #1470

'Persona 5: The Phantom X' Brings the Series to Your Phone—and It's Shockingly Good

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

Gareth Edwards Is Glad You Liked ‘Rogue One,’ Just Don’t Ask Him to Make Another ‘Star Wars’

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