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American Megatrends Assigned Patent

Permanent allocation of large host memory

American Megatrends, Inc., Norcross, GA, has been assigned a patent (9,208,112) developed by Xie, Jinwen, Sugar Hill, GA, for a “permanent allocation of a large host memory.

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”An add-in card allocates memory from a host computer. An option ROM on the add-in card includes a first interrupt handler for handling an interrupt for resetting a mass storage device that reads a system address map, modifies the system address map by adding an entry for an amount of host memory to be allocated to the add-in card, and stores the modified system address map as a destination system address map. The first interrupt handler also changes the address of an interrupt handler for providing the system address map to the address of a second interrupt handler also stored in the option ROM of the add-in card. When an interrupt is generated that requests the system address map, the second interrupt handler reads the destination system address map, which includes a memory allocation for the add-in card, and provides the destination system address map to the requestor.

The patent application was filed on April 22, 2010 (12/765,072).

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