Design flow management in the NELSIS CAD framework

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Abstract
In this paper a new approach for design flow management is presented. We describe how the input/output relations between tools can be defined in a flowmap. For this, several concepts are introduced, such as defining activities for tools, run-time activity identification, hierarchical flow graphs, modification versus extension, and the possibility to have loops in the flowmap. We also address tool scheduling and the integration of design flow management in the architecture of a frame-based design system. Powerful integrated design systems are required for the design of complex electronic circuits. An essential base component of such a design system is a CAD framework, which serves as a basis for tool integration and provides the designer with assistance for data organization and design management.

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