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RISC-V port accepted for inclusion in GCC
This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project .
Topics /
Hardware & Electronics
The most popular blog posts about hardware & electronics on Hacker News. 4,805 posts.
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I made a macro keypad with 3D-printed switches
Latest on the 3d-printed keyboard switch project: I've reached a switch design that I think is probably reliable enough, and I've put 3 of them together to form a macro keypad just to see how it all goes together before I commit to a full keyboard. I don't have a number for how many presses the switch lasts, other…
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An unusual 7400-series chip implemented with a gate array
When I look inside a chip from the popular 7400 series, I know what to expect: a fairly simple die, implemented in a straightforward, cost-e...
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Retina iMac owners can greatly improve graphics performance of many applications
Hmph! Not sure which one is "correct" there... hmm... If you use kCGImageAlphaPremultipliedFirst for the CGBitmapContext rather than kCGImageAlphaNoneFirst, then it looks closer to the original, maybe. ? Also other caveat: NSBitmapImageRep can't seem to deal with the ARGB format either, so if you use that you need to…
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Nvidia Cosmos 3
Physical AI systems must understand the real world before they can act within it. Robots, autonomous vehicles, and smart spaces need to understand what’s happening in their world…
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Processing the Page Turn
This board isn’t strictly a CPU but it is a processor of sorts. I actually purchased this board as it was described as a DEC board, with not a great picture, having not seen a DEC board with LOGIC ALUs on it I bought it. When it arrived I found it wasnt DEC at all but DSC, Digital Services Corporation. DSC was a video…
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Extracting ROM constants from the 8087 math coprocessor's die
Intel introduced the 8087 chip in 1980 to improve floating-point performance on the 8086 and 8088 processors, and it was used with the ori...
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LensLeech: Touch a camera to control your devices
Christopher Getschmann
3190
Decoding the NEC V20 Microcode
reenigne's decoding of the 8088 microcode in 2020 opened the doors for extremely accurate emulation of the 8088 CPU. Although I had added...
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The Evolution of Tunnel Boring Machines
Tunneling is an important technology for modern civilization, as a tunnel is often the only reasonable way to create a direct path between two points.
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Nvidia adds liquid-cooled GPUs
A liquid-cooled NVIDIA A100 PCIe GPU is the first in a line of GPUs for mainstream servers responding to customer demand for high-performance, green data centers.
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ZFS on a single core RISC-V hardware with 512MB
Is this feasible? Yes it is! OpenZFS on Linux compiled from sources for RISC-V, it will work with less than 250MB of RAM for a nearly fully filled 2TB zfs volume with 225.000 files! Even stressing the system and run in parallel (via Wifi): a…
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DIY microscope lenses on BMD pocket 6K camera
I was having fun lately with some normal macro photography and was curious if I somehow can use my fathers microscope lenses on my photo and film cameras. The idea is not new, a quick google search showed that it was indeed possible but you need a special adapter for these microscope lenses. The adapter is called “RMS…
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Can My Water Cooled Raspberry Pi Cluster Beat My MacBook?
It's time to put my water cooled Raspberry Pi Cluster to the test. I put it up against my MacBook and a Windows PC to see which performed best
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VHDL's Crown Jewel
How VHDL preserves determinism In this post, I would like to talk about VHDL’s crown jewel: how it preserves determinism in a concurrent language. Here is a figure of how it works:
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Building a Titan: Better security through a tiny chip
At the Made by Google event last week, we talked about the combination of AI + Software + Hardware to help organize your information. To better protect that information at a hardware level, our new Pixel 3 and Pixel 3 XL devices include a Titan M chip.We briefly introduced Titan M and some of its benefits on our…
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Restoring YC's Xerox Alto: how our boot disk was trashed with random data
In the previous Xerox Alto restoration session , we got the disk working, but the system didn't boot. After much investigation, I discove...
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Pixelopolis, a self-driving car demo from Google I/O built with TensorFlow-Lite
Pixelopolis is an interactive installation that showcases self-driving miniature cars powered by TensorFlow Lite. Each car is outfitted with its own Pixel phone, which used its camera to detect and understand signals from the world around it. In order to sense lanes, avoid collisions and read traffic signs, the phone…
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Bit-Banging Bluetooth Low Energy
Dmitry.GR: Creating BTLE-compliant advertisement packets, so that iOS and android devices can see and parse them.
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Explanation of 44.1 kHz CD sampling rate
The CD sampling rate has to be larger than about 40 kHz to fulfill the Nyquist criterion that requires sampling at twice the maximum analog frequency, which is about 20 kHz for audio. The sampling frequency is chosen somewhat higher than the Nyquist rate since practical filters neede to prevent aliasing have a finite…
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Full Reverse Engineering of the TI-84 Plus Operating System
Evidence-indexed documentation of TI-84 Plus OS 2.55MP ROM behavior and hardware interfaces.
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Ludde's FPGA NES
I was a bit bored during Christmas, so I decided to construct a whole Nintendo Entertainment System (NES) in an FPGA . An FPGA is a progra...
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Holier Than Thou: Precision Holes by Drilling, Boring, and Reaming (2021)
It’s imperative that design engineers understand the full journey of the parts they design, from the drawing definition, through manufacturing, and inspection. One of the most common features in machine design is a hole. Whether it accepts a bolt or holds a precision bearing, it has to be the right size and in the…
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