INT 31 P - DPMI 1.0+ - GET PROTECTED MODE EXTENDED PROCESSOR EXCEPTION HANDLER
        AX = 0210h
        BL = exception number (00h-1Fh)
Return: CF clear if successful
            CX:(E)DX = selector:offset of exception handler
        CF set on error
            AX = error code (8021h) (see AX=0000h)
Note:   DPMI host reflects exception to current client's handler
SeeAlso: AX=0202h,AX=0211h,AX=0212h

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