Ken Shirriff's blog

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

Reverse-engineering a carry-lookahead adder in the Pentium

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Addition is harder than you'd expect, at least for a computer. Computers use multiple types of adder circuits with different tradeoffs o...
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It's time to abandon the cargo cult metaphor

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The cargo cult metaphor is commonly used by programmers. This metaphor was popularized by Richard Feynman's "cargo cult science...
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