The second generation motis mixed-mode simulator
DAC '84 Proceedings of the 21st Design Automation Conference
Timing Verification and the Timing Analysis program
DAC '82 Proceedings of the 19th Design Automation Conference
Compiled-code-based simulation with timing verification
EURO-DAC '94 Proceedings of the conference on European design automation
A hierarchical approach to timing verification in CMOS VLSI design
EURO-DAC '91 Proceedings of the conference on European design automation
WCRT algebra and interfaces for Esterel-style synchronous processing
Proceedings of the Conference on Design, Automation and Test in Europe
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A new multi-level macromodeling technique for timing simulation has been developed. This technique is based upon the modeling of the behavior of subcircuits under single input changes. The possible interactions between multiple input changes determine the range of validity of the models. A formal method for developing the model validity conditions is presented. This work establishes a bridge between timing analysis by using single input change models, and timing simulation which correctly models signal interactions. The availability of a formal criterion for the validity of the models allows the dynamic identification of the parts of the circuit that require more accurate models. As a result, the cost advantage of high level models can be fully exploited while still allowing critical interactions to be simulated with high accuracy.