System management interrupt for a desktop management interface/s

Details System management interrupt for a desktop management interface/s System management interrupt for a desktop management interface/s

1998-10-23

2000-09-19

Butler, Dennis M.

Electrical computers and digital processing systems: support

Digital data processing system initialization or configuration

713100, G06F 900

Patent

active

061227323

ABSTRACT:
A computing system provides a process for updating a management information format (MIF) database while a processor is operating in a protected mode. The BIOS accesses a protected memory space by utilizing a system management interrupt (SMI). A SMI causes the computing system to enter a system management mode (SMM) and call a Basic Input Output System (BIOS) function, such as the BIOS function 52h (Set Structure), to accomplish an update of the MIF database. An OEM string, for example, may be updated. In SMM, the system is capable of accessing the entire memory address space without risking a memory protection fault.

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