Providing access to memory configuration information in a...

Details Providing access to memory configuration information in a... Providing access to memory configuration information in a...

2006-10-31

2006-10-31

Perveen, Rehana (Department: 2112)

Electrical computers and digital data processing systems: input/

Interrupt processing

C710S261000, C711S200000

Reexamination Certificate

active

07130950

ABSTRACT:
Client software stores an identifier corresponding to memory configuration data of interest and causes a software interrupt that requests a memory configuration read function. An interrupt read function handler then reads the data of interest responsive to the identifier and returns the data of interest. The client software may include, for example, BIOS firmware or application software executing in real or protected mode. The memory configuration information may be stored in a hidden I/O or MMIO register device. In such an embodiment, the interrupt handler may enable access to the hidden I/O or MMIO register device prior to reading the data of interest and disable access to the hidden I/O or MMIO register device afterwards.

REFERENCES:
patent: 4744048 (1988-05-01), Blanset et al.
patent: 6154825 (2000-11-01), Murdoch et al.
patent: 6216183 (2001-04-01), Rawlins
patent: 6526464 (2003-02-01), Jobs et al.
patent: 2005/0068831 (2005-03-01), Johnson
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Intel® 865G/865GV Chipset Datasheet—Intel® 82865G/82865GV Graphics and Memory Controller Hub (GMCH); Sections 3.9-3.10, pp. 1, 127-138; Feb. 2004.

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