Computer system with serial presence detection data and memory module control method

Abstract

A computer system with updatable serial presence detection data stores a virtual serial presence detection data with a client programmable memory. The virtual serial presence detection data comprisesconfiguration information of a memory module, and the storage of the virtual serial presence detection data is separated from a boot system code. An operation unit runs a memory driver for the memorymodule, and the memory driver reads the virtual serial existence detection data on the client programmable memory through a virtual serial existence detection module to obtain the configuration information of the memory module.

Description

technical field [0001] This case is about the serial presence detection (Serial PresenceDetect, SPD for short) of the memory module in the computer system, especially about the acquisition and update of the SPD data of the memory module in the computer system. Background technique [0002] Serial Presence Detect (SPD for short) is a standardized method for accessing memory module configuration information. Taking dynamic random access memory (DRAM) as an example, its serial presence detection (SPD) data report includes: the number of memory banks (banks) of the dynamic random access memory, operating voltage, number of row / column addresses, bit width, Operation timing... and other information. Typically 256 or even 512 bytes of storage is required. [0003] A traditional DRAM memory stick has an electronically erasable rewritable read-only memory (EEPROM). The memory manufacturer programs the corresponding SPD data into the EEPROM according to the type of DRAM chip used. ...

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Problems solved by technology

[0004] However, the SPD data may need to be readjusted

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