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WSAP has four levels, and each level has a clear division of labor. The functions of each layer from bottom to top are:
Operating system layer: it can adapt to Windows NT compatible operating systems, such as Win NT4.0, Windows2000, WinXP, etc.
Hardware driver layer: XFS middleware software technology is adopted. The function of this layer is to unify the hardware drivers according to XFS standard and provide a unified API interface for the upper layer. Therefore, it completely shields the hardware differences at the bottom and is completely transparent to the upper application.
Operation platform layer: This layer initially divides ATMC applications into presentation layer, action layer and process layer. The presentation layer is realized by Web technology, the action layer is realized by script engine technology, and the process layer is realized by finite state automata, expressing the application process of ATMC.