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1. 发明授权

US5537330A Method for mapping in logic synthesis by logic classification 失效
标题翻译：逻辑分类逻辑综合映射方法
公开(公告)号：US5537330A
公开(公告)日：1996-07-16
申请号：US258314
申请日：1994-06-10
申请人： Robert F. Damiano , Anthony D. Drumm , Michael K. Edwards , Robert L. Kanzelman , Kathy M. McCarthy
发明人： Robert F. Damiano , Anthony D. Drumm , Michael K. Edwards , Robert L. Kanzelman , Kathy M. McCarthy
IPC分类号： G06F17/50
CPC分类号： G06F17/505
摘要： A method within a logic synthesis system provides for using tags attached to the nodes in a parse string generated from an abstract description of a logic design to classify portions of a heterogeneous design as open control, structure dominant, or direct map. The classification is then used to govern the amount of optimization allowed during logic synthesis. The classification is further used to seed or bypass the covering algorithms to produce the technology implementation desired by the designer. Structure dominance is a technique for "seeding" patterns by a designer which best fit the structure to the technology, which implies that the structural representation of the design as entered by the designer dominates the patterns located by the covering algorithm. However, other pattern matching functions are allowed to find better matches, if they exist, and the covering algorithm is allowed the final choice. Direct map processing bypasses optimization and covering altogether to implement the structural representation exactly as written, if possible, using the available elements in the target technology library. In the event that direct map is not possible, the node is processed as structure dominant.
摘要翻译：逻辑综合系统中的方法提供使用从逻辑设计的抽象描述生成的解析字符串中的节点附加标签，以将异构设计的部分分类为开放控制，结构主导或直接映射。然后，分类用于管理在逻辑合成期间允许的优化量。分类进一步用于种子或绕过覆盖算法以产生设计者期望的技术实现。结构优势是一种设计人员将“结构化”模式最适合于技术结构的技术，这意味着由设计者输入的设计结构表示主导了覆盖算法所定位的模式。然而，其他模式匹配函数可以找到更好的匹配，如果它们存在，并且允许覆盖算法是最终选择。如果可能，使用目标技术库中的可用元素，直接映射处理将绕过优化和覆盖，以完全实现结构化表示。在直接映射不可能的情况下，节点被处理为结构主导。

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