FLDCW
Usage: FLDCW src Modifies flags:
Loads the 16-bit 'src' operand into the FPU control word. The 'src' operand is a memory location. This instruction is typically used to establish or change the FPU's mode of operation.
Load Floating-Point Control Word
FLDCW mem16 ; D9 /5 [8086,FPU]
FLDCW loads a 16-bit value out of memory and stores it into the FPU control word (governing things like the rounding mode, the precision, and the exception masks). See also FSTCW. If exceptions are enabled and you don't want to generate one, use FCLEX or FNCLEX before loading the new control word.
C0, C1, C2, C3 undefined.
EXAMPLE:
fldcw Label