Error tracing system for data processing systems has sub-system whose behavior in first and second working phases is the same

摘要

A data processing system (S) includes a sub-system (T), at least one module (M), particularly a processor, and at least one data memory (DS). In a first working phase from an initial condition, the sub-system produces first data and a component (KP1) generates second data. In a second working phase from the initial condition, the data memory outputs third data based on the second data. The behavior of the sub-system in the second working phase is essentially equal to the behavior of the sub-system in the first working phase.