Design of Operating Systems with Micro-Programmed Implementation,

摘要

Different phases appear in the development of operating systems. Five of these are identified,based on the total effort. As most prominent emerge the design and implementation phases. The design process is analyzed for determining the underlaying sequence of decisions,and identifying the interfaces,connections,views,and assumptions of the modules. One specific design is described as demonstration for the selection of the levels,the use of the implementation tools in the realization,and the combining of top-down and bottom-up decision-making for best results. The decision of micro-programmed implementation influences the design phase and the implementation techniques. Examples are drawn from the basic functions with micro -programs,also how instructions can be designed for supporting more complex functions. Suggestions for further research conclude the paper.