Intel's 386 processor was popular in late 1980s microcomputers. From the outside, the 386 chip is a boring ceramic square. But I obtained a 3-dimensional CT X-ray scan from Lumafield, revealing six layers of complex wiring hidden inside the ceramic package. Let's take a closer look... 1/N

Can anyone point me to a general guide on "tuning up" or adjusting old 80's CD players? I'm specially asking about adjusting the various pots on the main board, looking at signals with a scope, etc.

I have one where I don't have any service documentation for it.

You may or may not remember ScrapComputing's invention that revolutionizes DOS gaming:
youtu.be/g4OluJwGDEQ
The design of board that can slow down most CPUs to any speed you could possibly want is on github:
github.com/scrapcomputi...

Anyway I ordered a batch but accidentally got sent 11 lol

Any AGP graphics card you want me to test next on the 2x4 GHz Phenom II?
I'll do it if I have it!

time for a very early morning Electronics Flea Market thread. we're here in silicon valley at this legendary event that's existed since the '70s

Intel's Pentium processor (1993). Looking inside the chip , I found a large, complicated circuit just to multiply by 3 (lower right). Why? The Pentium uses a fast technique to multiply 64-bit number and it turns out that 3 is a special case. Let's take a closer look at multiplication... 1/N

Public service announcement: when you buy socket 775 enthusiast boards and throwaway overclocking CPUs at their rock bottom prices, don't forget you need OC RAM, too.
I recommend GEIL Black Dragon 800 MHz DDR2-800 4-4-4-12 which also works at 1066 5-5-5-15, allowing for the wildest FSBs at 1:1 ratio

hey i'm reverse-engineering a circuit board in this livestream, come check it out!

www.twitch.tv/tubetimeus

let's make a PS/2 model 77 floppy drive bezel!
www.twitch.tv/tubetimeus

Yea, its on github too.

github.com/ruenahcmohr/...

dronebotworkshop.com/custom-servo...

This is a super cool project by Mihai Parparita to make classic Mac and NeXT emulation easily accessible in your browser. Play with all these old machines without installing anything. Neat!

It uses WebAssembly ports of Mini vMac, Basilisk II, SheepShaver, DingusPPC, and Previous.

infinitemac.org

Intel launched the Pentium processor in 1993. Unfortunately, dividing sometimes gave a slightly wrong answer, the famous FDIV bug. Replacing the faulty chips cost Intel $475 million. I reverse-engineered the circuitry and can explain the bug. 1/9

A recently reuploaded lecture on phase locked loops (PLLs) from former Commodore hardware engineer Bil Herd, originally live streamed in 2011 by @jeriellsworth.bsky.social

Years in the making, today I've launched a brand new Amiga Software Archive. It contains hundreds of disks never available online before including Disk Magazines, (N.A.) User Group disks, Public Domain collections and Shareware/Freeware full-version stand-alone disks. youtu.be/PZJ9PxYlvTg

Putin’s Nuclear Meltdown: My Geopolitics Decanted chat with @armscontrolwonk.bsky.social about implications of Russia’s nuclear doctrine changes, Oreshik missile launch, the real Putin redlines, Iran’s resumption of warhead design work and China’s nuke buildup
podcast.silverado.org/episodes/put...