Patent ID: 7437283

Claim:
An evaluation system for evaluating a target board which is produced for use with a microprocessor, and supplies first electric power to a first power supply circuit, comprising: an evaluation tool which supplies ROM data to an evaluation microcomputer, and second electric power to a second power supply circuit, wherein said evaluation microcomputer is connected to said target board and said evaluation tool, and comprises: an emulation circuit which emulates functions of said microprocessor, and supplies an emulation result to said evaluation tool through an interface circuit, said interface circuit which interfaces said emulation circuit with said evaluation tool, and stores environment setting data relating to said microprocessor, said first power supply circuit which supplies said first electric power to said emulation circuit and does not supply power to said interface circuit, and said second power supply circuit which supplies said second electric power to said interface circuit; and wherein said evaluation tool and said interface circuit retain said ROM data and said environment setting data when said emulation circuit and said target board are powered again and restarted.