Patent ID: 7313729

Claim:
An apparatus for debugging an electronic system, said electronic system including a target microcontroller (MCU) and at least one ROM connected together, comprising: a debugger unit for debugging said target MCU; a debugger MCU for communicating with said debugger unit and with said target MCU, and for performing requests from said debugger unit and said target MCU; a ROM/RAM emulator board, connected to said debugger unit, said emulator board being disposed to emulate said ROM of said target MCU, said emulator board including a ROM/RAM emulation memory and an emulator MCU, said emulation memory being disposed to store user program codes downloaded from said debugger unit, said emulator MCU being disposed to read and write data from and to said ROM/RAM emulation memory; and a target/debugger board, connected to said emulator board, said target/debugger board including a bus mapping unit, a debugger RAM, said target MCU and said debugger MCU.