PADDUSW         Add Unsigned with Saturation on Word

PADDUSW destination, source                          CPU: MMX

        Logic
        mm(15..0)  <- SaturateToUnsignedWord( mm(15..0)  + mm/m64(15..0)  )
        mm(31..16) <- SaturateToUnsignedWord( mm(31..16) + mm/m64(31..16) )
        mm(47..32) <- SaturateToUnsignedWord( mm(47..32) + mm/m64(47..32) )
        mm(63..48) <- SaturateToUnsignedWord( mm(63..48) + mm/m64(63..48) )

    PADDUSW adds the unsigned words of the source operand to the unsigned
    words of the destination operand and stores the result in destination.

    If the result is larger than the range of an unsigned word (overflow),
    the value is saturated to 0FFFFh. If the result is smaller than the
    range of an unsigned word (underflow), the value is saturated to zero.

    The destination operand is an MMX register. The source operand can
    either be an MMX register or a 64-bit memory operand.


    Opcode      Format
    0F DD /r    PADDUSW mm/m64