<p>A processor system includes: a command sending unit (202), an address mapping unit (203) which is connected with the command sending unit (202) through a peripheral component interconnect bus (205), and a memory (204) which is connected with the address mapping unit (203); the command sending unit (202) is used for receiving a command of a processor (201), and instructing the command of the processor (201) to the peripheral component interconnect bus (205); the address mapping unit (203) is used for mapping the address which is accessed by the command of the processor (201) to the memory (204). A working method of the processor system includes: receiving a command of a processor (201); instructing the command of the processor (201) to a peripheral component interconnect bus (205); and mapping the address which is accessed by the command of the processor (201) to the memory (204).</p>
