Device and method for accessing memory

A method for reading a memory in conjunction with a CPU (Central Processing Unit), a north bridge chipset and a memory module, wherein the north bridge chipset has a memory module controller, a data register and a pointer, and the memory module has an ordinary area and a redundant area, the method comprising the steps of:

• enabling the CPU to output redundant address data to the pointer;
• recording a to-be-read amount into the data register;
• and
• enabling the memory module controller to read to-be-read data from a physical address of the redundant area according to the pointer and the data register, wherein the physical address is determined according to the redundant address data, and a data amount of the to-be-read data is determined according to the to-be-read amount.

A method for writing a memory in conjunction with a CPU (Central Processing Unit), a north bridge chipset and a memory module, wherein the north bridge chipset has a memory module controller, a data register and a pointer, and the memory module has an ordinary area and a redundant area, the method comprising the steps of:

• enabling the CPU to output redundant address data to the pointer;
• recording to-be-stored data into the data register;
• and
• enabling the memory module controller to store the to-be-stored data into a physical address of the redundant area according to the pointer and the data register, wherein the physical address is determined according to the redundant address data.