ChipsHacker Newsabout 10 hours ago
The adder at the heart of Intel's 8087 floating-point chip
1 min read
Intel's 1980 8087 floating-point coprocessor made math up to 100 times faster, computing transcendental functions like tangent and logarithms. Its arithmetic heart was a 69-bit adder in the fraction datapath, designed to speed up carries. The die measured 5mm by 6mm.
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