INT 31H 0204H: Query Protected-Mode Interrupt Vector

                                                    Compatibility: DPMI 0.9+ 
 Expects: AX    0204H
          BL    interrupt number
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 Returns: CF    NC (clear) if successful; else AX = DPMI Error Code
          CX:DX (or CX:EDX) selector:offset of requested vector
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    Info: Obtains the address of the current protected-mode interrupt
          handler for the specified interrupt.  The value return in CX is a
          protected-mode selector.

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