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

	AX = 0213h
	BL = exception or fault number (00h-1Fh)
	CX:(E)DX = exception handler selector:offset
Return: CF clear if successful
	CF set on error
	    AX = error code (8021h,8022h) (see #03143)
Notes:	specifies 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=0203h,AX=0211h,AX=0212h