Hacker News Top Stories with Summaries (April 24, 2023)
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<h1> Hacker News Top Stories</h1>
<p>Here are the top stories from Hacker News with summaries for April 24, 2023 :</p>
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Second IC – Homemade 1000 transistor array chip
Summary: Sam Zeloof, a college senior, has created a homemade 1000+ transistor array chip, called the Z2, using a 10µm polysilicon gate process. The chip is a simple 10x10 array of transistors that will allow Zeloof to test, characterise and tweak the process. The new FETs have excellent characteristics, including a much lower Vth which makes these chips compatible with 2.5V and 3.3V logic levels. The chip is small, about one quarter the die area of Zeloof's previous ICs (2.4mm^2), which makes it hard to probe. However, the simple design will give Zeloof a lot of characterisation data.
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QEMU 8.0
Summary: QEMU has released version 8.0.0, which includes over 2800 commits from 238 authors. The release features emulation support for FEAT_EVT, FEAT_FGT, and AArch32 ARMv8-R ARM, CPU emulation for Cortex-A55 and Cortex-R52, and new Olimex STM32 H405 machine type. Additionally, there is support for fid instruction, RISC-V ISA and Extension, and ACPI support. The release also includes support for asynchronous teardown of memory of secure KVM guests during reboot, new SapphireRapids CPU model, and improved efficient over TCP and when using TLS. The full list of changes is available in the changelog.