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Instruction mmx

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PMADDWD—Packed Multiply and Add
PMULHW—Packed Multiply High
PMULLW—Packed Multiply Low
POR—Bitwise Logical OR
PSLLW/PSLLD/PSLLQ—Packed Shift Left Logical
PSRAW/PSRAD—Packed Shift Right Arithmetic
PSRLW/PSRLD/PSRLQ—Packed Shift Right Logical
PSUBB/PSUBW/PSUBD—Packed Subtract
PSUBSB/PSUBSW—Packed Subtract with Saturation
PSUBUSB/PSUBUSW—Packed Subtract Unsigned with Saturation
PUNPCKHBW/PUNPCKHWD/PUNPCKHDQ—Unpack High Packed Data
PUNPCKLBW/PUNPCKLWD/PUNPCKLDQ—Unpack Low Packed Data

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Instruction mmx - POR—Bitwise Logical OR

Performs a bitwise logical OR operation on the quadword source (second) and destination (first) operands and stores the result in the destination operand location. The source operand can be an MMX technology register or a quadword memory location; the destination operand must be an MMX technology register. Each bit of the result is made 0 if the corresponding bits of both operands are 0; otherwise the bit is set to 1.