In-target probe (ITP) is a device used incomputer hardware andmicroprocessor design, to control a targetmicroprocessor or similarASIC at the register level. It generally allows full control of the target device and allows the computer engineer access to individualprocessor registers,program counter, andinstructions within the device. It allows the processor to besingle-stepped or forbreakpoints to be set. Unlike anin-circuit emulator (ICE), an In-Target Probe uses the target device to execute, rather than substituting for the target device.