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Oscillation control in logic simulation using dynamic dominance graphs

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1 Author(s)
Dahlgren, P. ; Dept. of Comput. Eng., Chalmers Univ. of Technol., Goteborg, Sweden

Logic-level modeling of asynchronous circuits in the presence of races frequently gives rise to oscillation. A new method for solving oscillation occurring in feedback loops (FLs) is presented. First, a set of graph traversal algorithms is used to locate the FLs and order them with respect to a dominance relation. Next, a sequence of resimulations with the feedback vertices forced into stable states is performed. The proposed method can handle noncritical races occurring in asynchronous circuits and has applications in feedback bridging fault simulation

Published in:

Design Automation Conference Proceedings 1996, 33rd

Date of Conference:

3-7 Jun, 1996