Electronic system with remap function and method for generating bank with remap function

An electronic system with remap function, comprising:

• a memory unit, which at least has a first bank and a second bank, wherein each of the first bank and the second bank has a common area and a non-common area, the common area of the first bank comprises an addressing table, the common area of the second bank comprises at least one remap program code, the non-common areas of the first bank and the non-common area of the second bank respectively comprises at least one original program code;
• a remap unit, which receives an original address data, an original bank selecting data, and a virtual mapping data, generates an embodied bank selecting data in accordance with the virtual mapping data and the original bank selecting data, and generates an embodied address data in accordance with the virtual mapping data and the original address data;
• and
• a microprocessor, which fetches the original program code from the first bank or the second bank accordance with the embodied bank selecting data and the embodied address data, or fetches the remap program code from the second bank in accordance with the embodied bank selecting data and the embodied address data.