INT 31 - DPMI 0.9+ - SET PROCESSOR EXCEPTION HANDLER VECTOR

	AX = 0203h
	BL = exception number (00h-1Fh)
	CX:(E)DX = selector:offset of handler
Return: CF clear if successful
	CF set on error
	    AX = error code (DPMI 1.0+) (8021h,8022h) (see #03143)
Notes:	32-bit programs must supply an offset in EDX and use a 32-bit interrupt
	  stack frame on chaining to the next exception handler
	the handler should return using a FAR return
	all fault stack frames contain an error code, but it is only valid for
	  exceptions 08h and 0Ah-0Eh
	handlers will only be called if the exception occurs in protected mode,
	  and the DPMI host does not transparently handle the exception
	the handler may change certain values on the stack frame
	  (see #03146,#03147)
	DPMI 1.0+ supports this function only for backward compatibility; use
	   AX=0212h or AX=0213h instead
	not supported by MS Windows 3.0 in Standard mode
SeeAlso: AX=0202h,AX=0212h,AX=0213h,INT 2F/AX=FB42h/BX=0022h