In this work' we develop models of resistive bridging faults and study the fault coverage on ISCAS85 circuits of different test sets using resistive and zero-ohm bridges at different supply voltages. These results explain several previously observed anomalous behaviors. In order to serve as a reference, we have developed the $rst resistive bridging faylt ATPG, which attempts to detect the maxim...

Fault-tolerance has been an essential architectural attribute for achieving high reliability in many critical applications of digital systems. Automatic fault and error handling mechanisms play a crucial role in implementing fault tolerance because an uncovered (undetected) fault may lead to a system or a subsystem failure even when adequate redundancy exists. Examples of this effect can be fou...

The need for fault tolerant software has grown signiicantly with the need for providing computer-based continuous service in a variety of areas that include telecommunications , air and ground transportation, and defense. TAMER (a Testing, Analysis, and Measurement Environment for Robustness) is a tool designed to assess the dependability of such systems. Three key ideas make TAMER diierent fro...

Stratified fault sampling is used in register transfer level (RTL) fault simulation to estimate the gate-level fault coverage of given test patterns. RTL fault modeling and fault-injection algorithms are developed such that the RTL fault list of a module can be treated as a representative fault sample of the collapsed gate-level stuck-at fault set of the module. The RTL coverage for the module ...

The fault coverage of a random test can be estimated by fault simulation. If the simulation is performed by another random sequence than those used under test or a fault sample is used, a random difference between the simulation result and the fault coverage has to be considered. The simulation result must be larger than the fault coverage that has to be guaranteed. The difference is called gua...

--Due to the overall increase in computer performance software-implemented fault injection (SWIFI) techniques are becoming increasingly attractive. Not only the easyness of use but also the quality of the injected faults contribute to the successful application of SWIFI based tools in the field. SWIFLER is a tool for UNIX systems for sofware-implemented injection of control flow errors. Its pur...

During testing, it is nearly impossible to run all statments or branches of a program. It is especially difficult to test the code used to respond to exceptional conditions. This untested code, often the error recovery code, will tend to be an error prone part of a system. We show that test coverage can be increased through an “assertion violation” technique for injecting software faults during...

In this paper a complete analysis of spot defects in industrial S R A M s will be presented. All possible defects are simulated, and the resulting electrical faults are transformed into functional fault models. The existence of the usually used theoretical memory fault models will be verified and new on,es will be presented. Finally, a new march test detecting all realistic faults, with a test ...

Fault diagnosis in the presence of noise and model errors is of fundamental importance. In the paper, the meaning of fault isolation performance is formalized by using the established notion of coverage and false coverage from the field of statistics. Then formal relations describing the relationship between fault isolation performance and the residual related design parameters are derived. For...

A new fault model is developed for estimation of the coverage of physical defects by hierarchical defect simulation. At the higher level simulation we use the functional fault model, at the lower level we use the defect/fault relationships in the form of defect coverage table and the conditional defect probabilities. A description and the experimental data are given about probabilistic analysis...