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Reverse-engineering the vintage Intel 8087's tangent algorithm: more than CORDIC
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Reverse-engineering the vintage Intel 8087's tangent algorithm: more than CORDIC

Hacker News·30 days ago
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#righto#fptan#cordic#microcode#article

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 the 8087...

15s
Microcode in Intel's 8087 floating-point chip: the scale instruction
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Microcode in Intel's 8087 floating-point chip: the scale instruction

Hacker News·about 1 month ago
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#righto#microcode#fscale#article#ama

In the 1970s, floating-point arithmetic was a mess. Computer manufacturers had a dozen incompatible arithmetic standards. Moreover, floating...

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Microcode inside the Intel 8087 floating-point chip: register exchange
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Microcode inside the Intel 8087 floating-point chip: register exchange

Hacker News·5 months ago
#WbgH6WyZ
#righto#microcode#instruction#stack#micro

In 1980, Intel introduced the 8087 floating-point chip, a co-processor that made floating-point operations up to 100 times faster. This chip...

15s