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FNSAVE            Save State (No-wait)        Exception Flags: None

FNSAVE memory location

       Logic:      [memory location] . coprocessor state

     This is the no-wait form of FSAVE. It writes the coprocessor state,
     environment and register stack, to the memory area specified.

     The coprocessor environment includes the control word, the status word,
     the tag word, and an error block.

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   Operands            Clocks         Bytes           Example
   FNSAVE destination  197-207+EA       5             FSAVE MEM_AREA
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        Note:          You should use this no-wait form of the instruction
                       only when there is a danger of generating an infinite
                       wait condition.