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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.