INT 31H 0200H: Query Real-mode Interrupt Vector

                                                    Compatibility: DPMI 0.9+ 
 Expects: AX    0200H
          BL    interrupt number
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 Returns: CF    NC (clear) if successful; else AX = DPMI Error Code
          CX:DX segment:offset of requested vector
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    Info: Obtains the address of a real-mode interrupt handler.  The value
          return in CX is a real-mode segment address (not a selector).

See Also: DPMI API
          INT 2fH: Multiplex Interrupt
          DOS Functions
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