US Patent 7228264 Program-controlled unit

A program-controlled unit includes a selection device which can determine whether the program-controlled unit is to be emulated by using a first emulation unit or by using a second emulation unit. As a result, it is possible to provide a mass production version of the program-controlled unit with an emulation unit having a reduced functional and/or performance scope. Therefore, an emulatable mass production version of the program-controlled unit can be made available which is only insignificantly more expensive, if at all, than a non-emulatable version.