Ken Shirriff's blog

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

Inside a counterfeit 8086 processor

Intel introduced the 8086 processor in 1978, leading to the x86 architecture in use today. I'm currently reverse-engineering the circu...

How the 8086 processor handles power and clock internally

One under-appreciated characteristic of early microprocessors is the difficulty of distributing power inside the integrated circuit. While...

Latches inside: Reverse-engineering the Intel 8086's instruction register

The Intel 8086 microprocessor is one of the most influential chips ever created; it led to the x86 architecture that dominates desktop an...

Reverse-engineering the adder inside the Intel 8086

The Intel 8086 processor contains many interesting components that can be understood through reverse engineering. In this article, I'l...

Inside the 8086 processor, tiny charge pumps create a negative voltage

Introduced in 1978, the revolutionary Intel 8086 microprocessor led to the x86 processors used in most desktop and server computing today....

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