Compatibility: DPMI 0.9+
Expects: AX    0211H
BL    exception number (00h-ffH)
                                                                  
Returns: CF    NC (clear) if successful; else AX = DPMI Error Code
CX:DX (or CX:EDX) selector:offset of exception handler
                                                                  
Info: Obtains the address of the client's protected-mode handler for
the specified CPU exception (used when that exception occurs
while the processor is in real mode).

Note that CX is a protected mode selector.  When a CPU exception
occurs while in real mode, the host switches to protected mode
and calls this address.

See Also: DPMI API
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INT 31H 0211H: Query Exception Handler Vector (Real Mode)