FFREE             Free Register               Exception Flags: None

FFREE destination

       Logic:      TAG(i) . 11 (empty)

     This instruction changes destination's tag to empty. The
     destination must be a register. It does not affect the contents
     of the register.

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   Operands            Clocks         Bytes           Example
   FFREE reg           9-16             3             FFREE ST(7)
  --------------------------------------------------------------------------