A memory disposition system, comprising a first memory device and a second memory device. First and second memory devices are provided to a system, such as an embedded system. The first and the second memory devices are coupled to a control unit, such as micro control unit. The first memory device stores first programs and the second memory device second programs. The first and second programs are controlled by the control unit. The first memory device can be a one time programmable memory device, such as a ROM, and the second memory device a multiple times programmable memory device, such as a flash memory.