Hacker NewsConditions in the Intel 8087 floating-point chip's microcode
https://www.righto.com/2025/12/8087-microcode-conditions.html
#HackerNews #Intel8087 #FloatingPoint #Microcode #Technology #History #ComputerArchitecture
BerndWaiting for #AMD to release the RDSEED #microcode fix for the "embedded" #EPYC 4005 series. I think it will be the first time I ever needed or wanted to update my CPU firmware. I know a bit more about it now that I attended the talk about AMD Zen microcode tools at the #39C3.
https://media.ccc.de/v/39c3-the-angry-path-to-zen-amd-zen-microcode-tools-and-insights
https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7055.html
https://media.ccc.de/v/39c3-the-angry-path-to-zen-amd-zen-microcode-tools-and-insights
https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7055.html
The Angry Path to Zen: AMD Zen Microcode Tools and Insights
โฎ โฅ โฌ ๐งโ๐ป#HardBoys / #MicroKids / #microcode / #TomWest / #DataGeneral / #MV8000 <https://hackaday.com/tag/tom-west/>
Z8086: Rebuilding the 8086 from Original Microcode
https://nand2mario.github.io/posts/2025/z8086/
#HackerNews #Z8086 #Rebuilding #8086 #Microcode #RetroComputing #Technology #Innovation
Dantali0n 
If you use #btrfs on kernels ranging from 6.12 to 6.19 and get the error:
VFS: Unable to mount root fs on unknown_block(0,0)
Add the 'btrfs' and 'microcode' hooks to /etc/mkinitcpio.conf via chroot and rerun initramfs generation.
If that doesn't help install `intel-ucode.img` and add it to your grub boot parameters in the initrd list.
If that still doesn't help (happens on Intel 3770k and older) disable #zstd initramfs compression, use gzip instead.
You are welcome
Kevin Karhan 
@adingbatponder yes as in the #remite part of it is offline so no #AMT functionality.
- But the general #microcode is still there.
This is called a "#neutered #ManagmentEngine" and "permanently disable" is also an option on commercial #UEFI|s like #ThinkPad.
- Personally I want #LinuxBoot instead of UEFI!
๐บ๐ฆ haxadecimal ๐ซ๐Courtesy of Eric Rechlin of hpcalc.org, now you can watch a fat ugly guy who says "um" far too often, at HHC 2025 talking about and demonstrating the forthcoming Nonpareil II microcode-level simulation of various HP RPN calculators (currently HP-15C and HP-16C):
https://www.youtube.com/watch?v=eraikEonaJQ
The audience really liked that the graphics is fully scalable, rather than only having integer multiple scaling of a bitmap, in the original Nonpareil.
HHC 2025: Scalable Reptoids from the Outer Reaches (Nonpareil II Updates) (Eric Smith)
At HHC 2025, I learned of the existence of another HP-95C in private hands, which makes four that I know of.
The HP-95C was a desktop scientific programmable printing calculator, with continuous (CMOS) memory but no card reader. It would have been introduced in 1976, positioned between the HP-91 desktop non-programmable printing scientific, and the HP-97 desktop programmable printing scientific with magnetic card reader.
1/
#hhc2025 #rpn #calculator #microcode #simulator
I just gave an HHC 2025 presentation and demonstration of Nonpareil II, my work--in-progress microcode-level HP calculator simulator, now written in C++20 using the Qt6 toolkit. Compared to the original, it uses vector graphics for smooth scaling over a wide range of window sizes.
#hhc2025 #rpn #calculator #microcode #simulator
#hhc2025 #rpn #calculator #microcode #simulator
Benjamin Carr, Ph.D. ๐จ๐ปโ๐ป๐งฌWorld's first #CPU-level #ransomware can "bypass every freaking traditional technology we have out there" โ new #firmware-based attacks could usher in new era of unavoidable ransomware
Beek, #Rapid7's senior director of threat analytics, revealed AMD Zen chip bug gave him idea that highly skilled attacker could in theory "allow those intruders to load unapproved #microcode into the processors, breaking encryption at the hardware level and modifying CPU behavior at will."
https://www.tomshardware.com/pc-components/cpus/worlds-first-cpu-level-ransomware-can-bypass-every-freaking-traditional-technology-we-have-out-there-new-firmware-based-attacks-could-usher-in-new-era-of-unavoidable-ransomware
Beek, #Rapid7's senior director of threat analytics, revealed AMD Zen chip bug gave him idea that highly skilled attacker could in theory "allow those intruders to load unapproved #microcode into the processors, breaking encryption at the hardware level and modifying CPU behavior at will."
https://www.tomshardware.com/pc-components/cpus/worlds-first-cpu-level-ransomware-can-bypass-every-freaking-traditional-technology-we-have-out-there-new-firmware-based-attacks-could-usher-in-new-era-of-unavoidable-ransomware
