A maximal resolution guided-probe testing algorithm

  • Authors:
  • Miron Abramovici

  • Affiliations:
  • -

  • Venue:
  • DAC '81 Proceedings of the 18th Design Automation Conference
  • Year:
  • 1981

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Abstract

The existing guided-probe testing procedures employ a simple strategy of following error path(s). This strategy may fail to locate faults (or may produce a wrong diagnostic) in the following situations: 1. Faults affecting lines connected to buses or wired-or junctions. 2. Faults whose error paths form closed asynchronous loops. 3. Faults which generate pseudo-intermittent symptoms. 4. Faults which do not propagate errors to the probed points. In this paper we introduce a new guided-probe algorithm which overcomes these difficulties. Our algorithm always achieves the maximal diagnostic resolution obtainable under the applied test.