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  Title:    Invalidate TLB Entry                  Flags: O D I T S Z A P C
            80486 Only                                   ═════════════════
                                                              -none-
  Syntax:   INVLPG
 
  See also: .486, INVD
 
  Description:
 
     Invalidates an entry in the Translation Lookaside Buffer (TLB),
     used by the demand-paging mechanism for virtual-memory systems.
 
     INVLPG takes a single memory operand and calculates the effective
     address of the operand, including the segment address. If the
     resulting address is mapped by any entry in the TLB, this entry is
     removed.
 
     Proper use of this instruction requires understanding of the
     hardware-supported demand-paging mechanism. INVLPG is intended
     primarily for systems programming. See Intel documentation for
     details.
                                    -♦-