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The instruction of MMX that is essential when a floating-point routine calls an MMX routine or viceversa is

The instruction of MMX that is essential when a floating-point routine calls an MMX routine or viceversa is Correct Answer EMMS

The EMMS instruction is imperative when a floating point routine calls an MMX routine or vice-versa. If we do not use EMMS at the end of MMX routine, subsequent floating-point instructions will produce erratic results.

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