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TIL that x86 has a floating point NOP called FNOP

stackoverflow.com What's the difference between the x86 NOP and FNOP instructions?

I was reading the Intel instruction manual and noticed there is a 'NOP' instruction that does nothing on the main CPU, and a 'FNOP' instruction that does nothing on the FPU. Why are there two separ...

What's the difference between the x86 NOP and FNOP instructions?
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