Patent ID: 6918058

Claim:
A semiconductor integrated circuit comprising: an internal main bus; first and second microprocessors sharing said internal main bus; a first debug serial bus with one end thereof connected to said first microprocessor; a second debug serial bus with one end thereof connected to said second microprocessor; a debugging module connected to the other ends of said first and second debug serial buses and transferring at least a debugging program and debugging data to said first microprocessor via said first debug serial bus and to said second microprocessor via said second debug serial bus; a first debug supporting unit provided in said first microprocessor and controlling a debugging function of said first microprocessor; a second debug supporting unit provided in said second microprocessor and controlling a debugging function of said second microprocessor; a first debug controlling bus which connects said first debug supporting unit and said debugging module; and a second debug controlling bus which connects said second debug supporting unit and said debugging module.