Experiences with concurrent fault simulation of diagnostic programs

A methodology is presented for fault-simulation of system level diagnostic programs involving large models (50000 to 200000 gates) and long test sequences. Accuracy of memory models, interplay of target faults with diagnostic program development, and creation of shorter diagnostics are topics covered. Observation and statistical methods and tools used to investigate the operation of the faulty machine within the diagnostic program are also presented. Observation of individual faulty machines is critical to provide information about looping and erratic programs, violations of subprogram sequencing, etc. This methodology makes fault simulation of system diagnostics feasible.<
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