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从国内实际出发，在分析当前工艺映射技术的基础上，提出从高层次（ＲＴＬ）和逻辑级两个层次上进行工艺映射的策略．提出并讨论了基于知识的高层次（ＲＴＬ）工艺映射方法，并将该方法与传统的逻辑级工艺映射方法相结合，建造ＭＬＴＭＭＴ（Ｍｕｌｔｉ－ＬｅｖｅｌＴｅｃｈｎｏｌｏｇｙ Ｍａｐｐｉｎｇ ｆｏｒ Ｍｕｌｔｉ－Ｔａｒｇｅｔ，多层次、多目标工艺映射）系统．在ＭＬＴＭＭＴ的具体实现上，采用了基于知识与基于算法相结合、知识作为数据与程序分离和知识库动态切换等技术，实现了面向多个工艺目标的工艺映射．最后，给出ＭＬＴＭＭＴ面向３种工艺的运行实例
Based on the actual situation in our country, based on the analysis of the current technology of process mapping, a strategy of process mapping from two levels: high level (RTL) and logical level is proposed. This paper presents and discusses the knowledge-based high level (RTL) process mapping method, and combines this method with the traditional logic level process mapping method to build MLTMMT (Multi-Level Technology Mapping for Multi-Target) )system. In the concrete realization of MLTMMT, the technology mapping based on the combination of knowledge and algorithm-based, knowledge as the data and program separation and dynamic switch of knowledge base are adopted to realize the process mapping oriented to multiple process goals. Finally, we give MLTMMT running examples for three kinds of technology