Memory backup device and method

Abstract

A back-up device of internal memory is prepared as connecting internal memory to waiting storage controller being used to latch address bus and data bus of internal memory, copying content of internal memory into nonvolatile storage connected with waiting storage controller by waiting storage controller when internal memory bus is on idle state for finalizing internal memory back-up, connecting waiting storage controller on bus of internal memory and setting operation of internal memory controller to be prior than that of waiting storage controller.

Description

technical field

[0001] The invention relates to a memory backup device and method, in particular to a device and method for dynamic memory backup using a non-volatile memory. Background technique

[0002] As the carrier of all computer programs, memory plays an important role in computers. At present, the computer memory is all volatile memory. Although the operation speed is fast, the contents in the memory will be lost when there is no power supply. If the memory adopts a non-volatile memory, its access speed is too slow, so it cannot meet the operating requirements of the current computer system.

[0003] In order to solve the above problems, the current common practice is to store the contents of the memory in a large non-volatile memory (such as a hard disk), and then the computer can be powered off. However, copying data back and forth from the hard disk will slow down the switching speed.

[0004] In S3 (S3 is usually called STR (Suspend to RAM), suspend to memory)...

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