Ken Shirriff's blog
Computer history, restoring vintage computers, IC reverse engineering, and whatever
Inside the Intel 8087 chip: floating-point addition and subtraction
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In 1980, Intel introduced the 8087, a chip that made floating-point operations much faster in the IBM PC and other systems. Although the 808...
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Inside a 1980s filter chip that uses switched capacitors
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Sometimes it's easier to identify an IC with a microscope. While sorting a box of old ICs, CuriousMarc came across some Harris ICs label...
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Reverse-engineering the vintage Intel 8087's tangent algorithm: more than CORDIC
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I hope you're not tired of the 8087, because I have another article about Intel's floating-point chip. 1 In 1980, Intel introduced ...
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