System and method for protecting memory during system initialization
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United States of America Patent
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Nov 23, 2010
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app pub date -
Apr 27, 2007
filing date -
Apr 27, 2007
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Abstract
A system and method for protecting memory during system initialization is provided. A complex programmable logic device (CPLD) is operatively interconnected with a multiplexer to enable control of a memory to be switched between a memory controller and the CPLD in response to error conditions. If an error condition is identified, the CPLD assumes control of the memory and activates a battery subsystem to provide memory refreshes until system re-initialization. Upon system bring-up, interactions between the BIOS and CPLD assure that protected memory is fully recovered by the system. The contents of memory will remain protected from any further faults that may occur during the bring-up sequence.
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