361
Examining circuit boards from the Space Shuttle's I/O Processor
The Space Shuttle's five 1 general-purpose computers played a critical role in each flight: controlling the engines, monitoring thousands o...
362
Microcode inside the Intel 8087 floating-point chip: register exchange
In 1980, Intel introduced the 8087 floating-point chip, a co-processor that made floating-point operations up to 100 times faster. This chip...
363
Quartz crystals
(This is an adapted version of part of an article I wrote for the Dutch amateur radio magazine Electron , August 2016.)
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OpenTitan Shipping in Production
Google has worked with the open source communities to build OpenTitan, the first open source silicon Root of Trust (RoT).
365
Cores in space: The core memory module from a 1980 Spacelab computer
Spacelab was a reusable laboratory that could be carried in the Space Shuttle's cargo bay, providing lab space for astronauts and experiment...
366
The Lost Atomic Update on Loongson CPU
杰哥的{教学，运维，编程，调板子}小笔记
367
AI At Home Part 1: A Box Of Scraps
data centers are so cool there should be one in every house
368
Microcode in Intel's 8087 floating-point chip: the scale instruction
In the 1970s, floating-point arithmetic was a mess. Computer manufacturers had a dozen incompatible arithmetic standards. Moreover, floating...
369
ZX Spectrum Next Laptop
Having created a laptop style case for my ZX Spectrum Next dev board previously, I wanted to re-visit the idea of a Spectrum laptop and address some of the issues faced in the previous version.
370
I Built a Stereo Vision Board for Hardware Hackers
This article was written entirely by a human, for humans. I tend to get excited about certain chips. This time, it was a microprocessor: The Rockchip …
371
Using ThinkPad T480 as a mobile phone
A collection of Maroš Grego's works.
372
A laser-based process that enables adhesive-free paper packaging
Paper packaging offers a number of advantages over its plastic counterparts: It has a high recycling rate, lower CO₂ emissions, and lower disposal costs. However, it cannot yet be sealed without adhesives or layers of plastic—a disadvantage for manufacturing and recycling processes. In the PAPURE project, four…
373
A few CPU hardware bugs
Catherine (Whitequark)’s recent observations on poorly-engineered firmware reminded me of a few mistakes I’ve seen in vendors’ CPUs; some unimportant and others surprisingly bad. Since I’ve never seen these widely discussed, here’s some discussion and links to supporting evidence to make them more widely known, since…
374
Tofolli gates are all you need
Any Boolean function can be computed with Tofolli gates, and Tofolli gates are reversible, and so any Boolean function can be computed reversibly.
375
A Year of 3D Printing
If you'd asked me a few years back if I thought I'd buy a 3D printer, I would have said no. My experience of 3D printers back when I was in college was that they were very slow, expensive, frequently failed mid-print, and needed constant calibration...
376
The Intel 8087 chip: floating-point addition and subtraction
In 1980, Intel introduced the 8087, a chip that made floating-point operations much faster in the IBM PC and other systems. Although the 808...
377
Will I ever own a zettaflop?
As the eleventh hour dawns all the pieces start to fall into place. I lived my life knowing this would happen, yet when it is I may be just as unprepared as anyone else. As any self driving car maker knows, predicting doesn’t mean you can act.
378
Samsung demonstrates 3D stacked FETs with triple nanosheet channels at 42nm
Samsung Electronics' Semiconductor Research Center presented the paper “First Demonstration of 3D Stacked FETs at Gate Pitch of 42 nm Featuring Triple Stacked Nanosheet Channels for Advanced Logic Applications” at the 2026 VLSI Symposium, held from June 14–18.
379
An ARM Homelab Server, or a Minisforum MS-R1 Review
I’ve always wanted an ARM server in my homelab. But earlier, I either had to use an underpowered ARM system, or use Asahi which not only requires expensive Mac hardware but also slowed down in the past few years.
380
Cyberdecks, going analog, and convivial technology
People are moving away from corporate controlled tech, and making their own. How the designs of cyberdecks are being driven by women. And how medieval guilds, Luddites, and the Arts and Crafts movement are all connected to our current moment.
381
Discovery of Cold War-era rare Eastern Bloc computers in a German hangar
In 2006, CHM curators traveled to Germany to follow a lead on an abandoned collection of historical computing artifacts. In a three-story warehouse, they found a real-world timeline of computing history. After days of exploring and assessing, they brought back nearly 2,000 items for the permanent collection.
382
The simple elegance of the integrated timing belt loopback fastener
I’ve recently been working on a mechatronics project that involves constructing an X-Y cartesian motion system. I opted to use stepper motors to drive each axis, and timing belts and pulleys for translating the rotational torque of the steppers into linear motion. The timing belts need to be anchored to the component…
383
Reverse-engineering the Intel 8087's tangent algorithm: more than CORDIC
I hope you're not tired of the 8087, because I have another article about Intel's floating-point chip. 1 In 1980, Intel introduced the 8087...
384
Bring Back MiniDV with This Raspberry Pi FireWire Hat
In my last post, I showed you to use FireWire on a Raspberry Pi with a PCI Express IEEE 1394 adapter. Now I'll show you how I'm using a new FireWire HAT and a PiSugar3 Plus battery to make a portable MRU, or 'Memory Recording Unit', to replace tape in older FireWire/i.Link/DV cameras. The alternative is an old used…
385
thunderbolt-ibverbs: We have InfiniBand at home
Linux kernel experiments implementing IB verbs over consumer Thunderbolt/USB4 hardware to give cheap mini-PCs high-performance RDMA suitable for cluster inference.
386
Rebuilding the Computer Room
We traded the physical boundaries of dedicated rooms for the convenience of our always-on digital lives -- but recently I've been building those walls back up.
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Gpiozero Flow
Back in 2015, I had the idea for gpiozero — a Python library for Raspberry Pi, making programming GPIO devices simpler by abstraction: instead of thinking about pin channels, voltages, pull-up resistors and rising or falling edges, we think about buttons being pressed and released, sensors...
388
80386 Protection
I'm building an 80386-compatible core in SystemVerilog and blogging the process. In the previous post , we looked at how the 386 reuses one barrel shifter for all shift and rotate instructions. This time we move from real mode to protected and talk about protection .
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Delidded Intel I9-14900KS CT Scan
Welcome to LTT Labs - your go-to destination for all things tech. Explore comprehensive test results, insightful commentary, and the latest analysis in hardware.
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The Curse of Soldered RAM
The trend for soldered on RAM in modern laptops is truely evil especially in these current trying times of shortage induced high prices. I normally run 2 laptops, one for personal stuff and one for…