Ken Shirriff's blog

Computer history, restoring vintage computers, IC reverse engineering, and whatever

Showing posts with label reverse-engineering. Show all posts

Showing posts with label reverse-engineering. Show all posts

Why the Z-80's data pins are scrambled

If you look closely at the datasheet for a Z-80 chip, you'll notice the data pins are in a random-looking order. The address pins (A) ar...

Reverse engineering a counterfeit 7805 voltage regulator

Update: It turns out my 7805 isn't counterfeit. eclectro did an in-depth search ( details on reddit ) and found an old 7805 datasheet...

Reverse-engineering the TL431: the most common chip you've never heard of

This article is now available in Russian: Реверс-инжиниринг TL431, крайне распространенной микросхемы, о которой вы и не слышали . A die p...

How Hacker News ranking really works: scoring, controversy, and penalties

The basic formula for Hacker News ranking has been known for years , but questions remained. Does the published code give the real algorithm...

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