发明名称 |
Method and apparatus for providing execution of system management mode services in virtual mode |
摘要 |
The present invention is an apparatus and method for executing instructions in a system management mode in a processor-based system. The apparatus comprises a memory for storing instruction sequences by which the processor-based system is processed where the memory includes a system management random access memory (SMRAM). The apparatus also comprises a processor having a system address space, that executes the stored instruction sequences. The stored instruction sequences include process steps to cause the processor to: (a) configure the processor to operate in a protected mode while in a system management mode, the processor operating at address greater than one megabyte; (b) invoke a paging feature of the processor; (c) configure the processor to operate in a virtual mode; and (d) process the instruction sequences; wherein the process steps occur upon the receipt of an instruction to process a system management request.
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申请公布号 |
US5987604(A) |
申请公布日期 |
1999.11.16 |
申请号 |
US19970946416 |
申请日期 |
1997.10.07 |
申请人 |
PHOENIX TECHNOLOGIES, LTD. |
发明人 |
EDRICH, DAVID S. |
分类号 |
G06F9/46;G06F9/48;G06F12/10;(IPC1-7):G06F9/44 |
主分类号 |
G06F9/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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