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Variable memory checking method and system

A memory and variable technology, applied in the field of verification, can solve the problems of complex operation of the walking detection method, low diagnostic coverage, and the detection board method cannot detect the crosstalk of memory cells.

Active Publication Date: 2015-03-11
CHONGQING CHUANYI AUTOMATION
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Problems solved by technology

[0005] The technical problem to be solved in this application is to provide a method and system for variable memory verification, which solves the problem that the detection board method in the prior art cannot detect the crosstalk between storage units, and can only achieve low effective diagnostic coverage problems and problems that are more complicated to operate with the walking detection method

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  • Variable memory checking method and system

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Embodiment 1

[0090] Corresponding to the method provided in Embodiment 1 of a variable memory verification method of the present application, see Figure 4 , the present application also provides Embodiment 1 of a system for verifying variable memory. In this embodiment, the system includes:

[0091] The first obtaining unit 401 is configured to obtain the first address and corresponding data of the current verification unit in the target storage area.

[0092] The storage unit 402 is configured to store the first address and corresponding data of the current verification unit in the target storage area.

[0093] The first check unit 403 is configured to perform CRC check on all units before the current check unit, and return a first CRC check value.

[0094] The second check unit 404 is configured to perform CRC check on all units following the current check unit, and return a second CRC check value.

[0095] The walking unit 405 is configured to perform a walking operation on the curre...

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Abstract

The invention provides a variable memory checking method which comprises the following steps: acquiring the starting address of a check unit in a memory region and corresponding data; performing CRC (cyclic redundancy check) on all units before the current check unit, and returning a first CRC value; performing CRC on all units after the current check unit, and returning a second CRC value; performing walking operation on the current data bit; performing CRC on all units before the current check unit, and returning a third CRC value; performing CRC on all units after the current check unit, and returning a fourth CRC value; comparing the second CRC value and the fourth CRC value when the first CRC value and the third CRC value are consistent, performing walking operation on next bit when the second CRC value and the fourth CRC value are consistent until all data bits are checked; and restoring data of the current check unit. Crosstalk among memory units can be detected, and high effective diagnostic coverage is realized.

Description

technical field [0001] The present application relates to the verification field, in particular to a method and system for verifying variable memory. Background technique [0002] With the development of technology, people have higher and higher requirements for the verification method of the variable memory. [0003] Existing methods for verifying variable memory generally use the detection board method and the walking method. The detection board method can only detect faults where the storage unit is fixed at 1 or 0, and cannot detect the crosstalk between storage units. To achieve low effective diagnostic coverage; using the walking detection method will change the content of the storage unit, or need to open another storage area to temporarily store the data of the detected unit, and restore it after the detection, which is more complicated to operate. [0004] Therefore, how to achieve simple operation and high effective diagnostic coverage when performing variable mem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/10
Inventor 吕鹏勃艾军
Owner CHONGQING CHUANYI AUTOMATION
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