Ken Shirriff's blog

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

Inside the HP Nanoprocessor: a high-speed processor that can't even add

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The Nanoprocessor is a mostly-forgotten processor developed by Hewlett-Packard in 1974 1 as a microcontroller 2 for their products. Stra...
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Reverse-engineering the 8086's Arithmetic/Logic Unit from die photos

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The Intel 8086 processor was introduced in 1978, setting the course of modern computing. While the x86 processor family has supported 64-b...
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Inside a counterfeit 8086 processor

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

How the 8086 processor handles power and clock internally

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