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本文介绍了我所研制的LSIS-Ⅱ自动布图系统中的布局子系统.这是在[1]的基础之上,主要在以下的几个方面对布局模式和算法进行了发展. (1)布局子系统模块化,在布局过程的各主要界面上可以再入,可以做人机交互,并可以由人工调度布局的进程; (2)在子系统中采用了宏单元插入的多元胞布局模式,构成可兼容多种布图模式的分级布局设计子系统,提高了系统的适应能力和设计容量; (3)本文的布局算法进一步提高了求解精度,兼顾了布局的拓扑目标和布线目标.
This paper introduces the layout subsystem of LSIS-Ⅱ automatic layout system developed by myself, which is based on [1], and mainly develops layout patterns and algorithms in the following aspects: (1) The layout subsystem is modularized and can be re-entered in the main interface of the layout process, and can be man-machine interaction. The layout of the layout process can be manually controlled. (2) In the subsystem, the multivariate layout mode of the macro unit insertion is adopted, Constitute a hierarchical layout design subsystem that is compatible with a variety of layout patterns to improve the system’s adaptability and design capacity; (3) The layout algorithm in this paper further improves the accuracy of the solution, taking into account the topological and layout objectives of the layout.