Xerox has instituted a set of software tools that close the loop between circuit design and mask generation of VLSI and provide checks and analysis along the way. The software includes circuit extraction, capacitance calaulation, nodal analysis and logic recognition as well as interfaces to graphic systems. The systematic method of capturing circuit designs… (More)
Incremental changes add new functionality and new properties to the software. This chapter presents a methodology for incremental changes, where domain concepts play a key role. A case study of a small application written in Java is also presented.