This describes replacing an IBM PC/XT’s Intel 8088 with an NEC V20 to get a straightforward performance boost and modest feature improvements. The NEC V20 is a pin‑compatible CPU that executes common 8088/8086 instructions faster, adds a handful of useful extra opcodes, and accelerates integer multiply/divide and string operations; swapped into an XT it produces measurable speed gains on real‑world DOS software and benchmarks. The writeup presents side‑by‑side timings, compatibility checks with XT BIOS and peripherals, and clear before‑and‑after comparisons showing noticeably snappier bootup, disk access, and application responsiveness without changing motherboard or software.
Practical guidance covers how to install the V20 as a direct DIP replacement, what hardware and BIOS behaviors to test after the swap, and which legacy quirks to watch for: timing‑sensitive peripherals, copy‑protection schemes or software that rely on undocumented 8088 behavior can fail, so verification of critical I/O and protected software is required. Power, heat, and voltage remain compatible with typical XT boards, making the V20 an economical, low‑risk upgrade for anyone wanting to extend an XT’s lifespan and improve day‑to‑day performance without a full system overhaul.
Summary generated by AI from the linked article. hn.today is not affiliated with Hacker News or Y Combinator.
Raspberry Pi has implemented a restriction that prevents users from changing or upgrading the RAM chips on their devices. This move limits user repairability and upgrade options for Raspberry Pi hardware. (forums.raspberrypi.com)
The Raspberry Pi 5 EEPROM update now prevents users from manually upgrading the RAM. This change aims to improve security and stability of the device. (reddit.com)
A browser-based version of the Elektron Machinedrum synthesizer allows users to create and study rhythmic patterns with digital synthesis and step sequencing. It features sound selection, pattern management, and real-time control, mimicking the hardware's functions. (machinedrum-study.pages.dev)
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papyDeck is a small, open-source console that runs Lua scripts as games, with source code accessible and modifiable by users. It features high-resolution graphics, multiple cores, and can display games over HDMI, emphasizing transparency and user creativity. (papydeck.eu)
Carlos Asmat built a custom home server using a Zotac MAGNUS EN1070K with added drives and upgrades to host backups and download Linux ISOs. He repurposed old hardware and printed custom parts to create a cost-effective NAS solution. (asmat.ca)
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