MMX Instruction Set Architecture (ISA) Extension

MMX SIMD integer instructions added with the Pentium MMX processor:

• EMMS
  Empty MMX Technology State
• MOVD/MOVQ
  Move Doubleword/Move Quadword
• PACKSSWB/PACKSSDW
  Pack with Signed Saturation
• PACKUSWB
  Pack with Unsigned Saturation
• PADDB/PADDW/PADDD
  Add Packed Integers
• PADDSB/PADDSW
  Add Packed Signed Integers with Signed Saturation
• PADDUSB/PADDUSW
  Add Packed Unsigned Integers with Unsigned Saturation
• PAND
  Logical AND
• PANDN
  Logical AND NOT
• PCMPEQB/PCMPEQW/PCMPEQD
  Compare Packed Data for Equal
• PCMPGTB/PCMPGTW/PCMPGTD
  Compare Packed Signed Integers for Greater Than
• PMADDWD
  Multiply and Add Packed Integers
• PMULHW
  Multiply Packed Signed Integers and Store High Result
• PMULLW
  Multiply Packed Signed Integers and Store Low Result
• POR
  Bitwise Logical OR
• PSLLW/PSLLD/PSLLQ
  Shift Packed Data Left Logical
• PSRAW/PSRAD
  Shift Packed Data Right Arithmetic
• PSRLW/PSRLD/PSRLQ
  Shift Packed Data Right Logical
• PSUBB/PSUBW/PSUBD
  Subtract Packed Integers
• PSUBSB/PSUBSW
  Subtract Packed Signed Integers with Signed Saturation
• PSUBUSB/PSUBUSW
  Subtract Packed Unsigned Integers with Unsigned Saturation
• PUNPCKHBW/PUNPCKHWD/PUNPCKHDQ
  Unpack High Data
• PUNPCKLBW/PUNPCKLWD/PUNPCKLDQ
  Unpack Low Data
• PXOR
  Logical Exclusive OR