| 摘要 |
PURPOSE:To obtain trace data high in availability by providing a trace instruction circuit for outputting the trace instruction to a trace memory when the output of a trace condition memory coincides with trace condition information outputted from the titled processor. CONSTITUTION:The trace instruction circuit 5 compares the trace condition outputted from the trace condition memory 3 with the trace condition data outputted from a trace condition data output part 1-2 of a trace object device 1, and when they coincides, outputs a writing signal to a trace memory 2. When the device is operating, the contents of the trace condition memory 3 designated by an address register 4 are compared with the trace condition data outputted from the trace condition data output part 1-2 in the trace instruction circuit 5, when they coincide, a writing signal is outputted to the trace memory 2, at that time, the data outputted from a trace object data output part 1-1 is written in the trace memory 2 and the tracing of the data is performed. Thereby, the trace data with considerably wide range and high availability is obtained.
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