发明授权
- 专利标题： FLEXIBLE IMPLEMENTATION OF A SYSTEM MANAGEMENT MODE (SMM) IN A PROCESSOR
- 专利标题（中）： 管理员在处理器灵活的实现
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申请号： EP96935972.8申请日： 1996-10-03
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公开(公告)号： EP0853789B1公开(公告)日： 2004-03-03
- 发明人: FAVOR, John, G. , WEBER, Frederick, D.
- 申请人： ADVANCED MICRO DEVICES INC.
- 申请人地址： One AMD Place, P.O. Box 3453 Sunnyvale, California 94088-3453 US
- 专利权人： ADVANCED MICRO DEVICES INC.
- 当前专利权人： ADVANCED MICRO DEVICES INC.
- 当前专利权人地址： One AMD Place, P.O. Box 3453 Sunnyvale, California 94088-3453 US
- 代理机构： Brookes Batchellor
- 优先权： US5069P 19951006; US5021P 19951010; US592149 19960126; US649982 19960516
- 国际公布： WO1997013202 19970410
- 主分类号： G06F9/46
- IPC分类号： G06F9/46 ; G06F9/445
摘要：
A system management mode (SMM) (900) of operating a processor (120) includes only a basic set of hardwired hooks or mechanisms in the processor for supporting SMM. Most of SMM functionality, such as the processing actions performed when entering and exiting SMM, is 'soft' and freely defined. A system management interrupt (SMI) pin (960) is connected to the processor so that a signal on the SMI pin causes the processor to enter SMM mode. SMM is completely transparent to all other processor operating software. SMM handler code and data is stored in memory that is protected and hidden from normal software access.
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