Compatibility: DPMI 0.9+
Expects: AX    0204H
BL    interrupt number
                                                                  
Returns: CF    NC (clear) if successful; else AX = DPMI Error Code
CX:DX (or CX:EDX) selector:offset of requested vector
                                                                  
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
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INT 31H 0204H: Query Protected-Mode Interrupt Vector