INT 21 U - DOS 5+ ROM - SET EXCLUSION REGION LIST
        AX = 6F03h
        DS:DX -> new exclusion region list (see AX=6F02h)
Note:   DOS saves only the pointer and assumes that the contents of the list
          are never changed, and that regions do not overlap
SeeAlso: AX=6F01h,AX=6F02h

.