INT 31 - DPMI 1.0+ - GET REAL MODE EXTENDED PROCESSOR EXCEPTION HANDLER

	AX = 0211h
	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 #03143)
Notes:	returns address of protected-mode handler for real-mode exception
	DPMI host performs a switch to protected mode, reflects the exception
	  to the virtual machine's primary client, and returns to real mode
	  on the handler's completion
SeeAlso: AX=0202h,AX=0210h,AX=0213h