Compatibility: DPMI 0.9+
Expects: AX    0210H
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 protect-mode address of a CPU exception handler for
the calling client.

See Also: DPMI API
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INT 31H 0210H: Query Exception Handler Vector (Prot. Mode)