Ken Shirriff's blog

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

Die shrink: How Intel scaled down the 8086 processor

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The revolutionary Intel 8086 microprocessor was introduced 42 years ago this month so I've been studying its die. 1 I came across t...
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Reverse-engineering and comparing two Game Boy audio amplifier chips

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The Nintendo Game Boy contains an audio amplifier chip for sound through a speaker or headphones. In this post, I reverse-engineer this ch...
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A look at the die of the 8086 processor

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The Intel 8086 microprocessor was introduced 42 years ago this month, 1 so I made some high-res die photos of the chip to celebrate. The ...
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Die analysis of the 8087 math coprocessor's fast bit shifter

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Floating-point numbers are very useful for scientific programming, but early microprocessors only supported integers directly. 1 Although...
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