To provide the method and device for the analysis of a computer device which analyze the operation state of the computer device more accurately.

An internal signal S1 of a computer system 1 is taken out synchronously with its system clock CLK and is stored in a prescribed storage means 22, so that the processing state of the computer system 1 can be sampled without changing its program for the purpose of measurement. Thus, the data processing state of the computer system 1 can be analyzed more faithfully. Operation state information of the computer system 1 is displayed with display forms different by bus masters corresponding to internal busses of the computer system 1 and/or processing units (transactions), thereby more easily discriminating the operation state of the computer system 1.