Adiós 3DNOW!

AMD anuncia que abandona el juego de instrucciones K6-2 que mejoraban el calculo en punto flotante de los procesadores x86.

Básicamente eran estas instrucciones máquina:

  • PI2FD – Packed 32-bit integer to floating-point conversion
  • PF2ID – Packed floating-point to 32-bit integer conversion
  • PFCMPGE – Packed floating-point comparison, greater or equal
  • PFCMPGT – Packed floating-point comparison, greater
  • PFCMPEQ – Packed floating-point comparison, equal
  • PFACC – Packed floating-point accumulate
  • PFADD – Packed floating-point addition
  • PFSUB – Packed floating-point subtraction
  • PFSUBR – Packed floating-point reverse subtraction
  • PFMIN – Packed floating-point minimum
  • PFMAX – Packed floating-point maximum
  • PFMUL – Packed floating-point multiplication
  • PFRCP – Packed floating-point reciprocal approximation
  • PFRSQRT – Packed floating-point reciprocal square root approximation
  • PFRCPIT1 – Packed floating-point reciprocal, first iteration step
  • PFRSQIT1 – Packed floating-point reciprocal square root, first iteration step
  • PFRCPIT2 – Packed floating-point reciprocal/reciprocal square root, second iteration step

Qué descansen en paz.

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