FNDISI      Disable Interrupts (8087, No-wait)    Exception Flags: None

FNDISI

       Logic:      Interrupt Enable Mask . 1

     FNDISI is the no-wait form of FDISI. It sets the Interrupt Enable
     Mask in the control word, which prevents the 8087 from issuing
     interrupt requests.

     This instruction disables interrupts in the 8087 only. It is
     recognized but ignored in later coprocessors.

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   Operands            Clocks         Bytes           Example
   FNDISI              2-8              3             FNDISI
  --------------------------------------------------------------------------

        Note:          You should use this no-wait form of the instrcution
                       only when there is a danger of generating an infinite
                       wait condition.