. . "n of a stack having top, intermediate, and bottom service objectsUS5566346 *Dec 21, 1993Oct 15, 1996Taligent, Inc.System for constructing hardware device interface software systems independent of operating systems including capability of installing and removing interrupt handlersUS5590297 *Jan 4, 1994Dec 31, 1996Intel CorporationAddress generation unit with segmented addresses in a mircroprocessor" . .