Abstract: An electronic device is described having a microprocessor (100) and banked memory (otherwise known as virtual memory, 15, 16) as well as a method of operation of a such a device. A selected program is run from a first banked memory (15). An access program is loaded from the running program into common RAM (11). The access program is run from common RAM and actuates a memory switch (121) to disconnect the first banked memory from the microprocessor and to connect in its place a second banked memory (16). Memory access operations are performed to the second banked memory. The access program activates the memory switch to disconnect the second banked memory and to reconnect the first banked memory and running of the selected program is recommenced. By storing the access program in RAM, there is less usage of valuable common memory space.