AMD AMD-K6-2/400 User Guide - Page 267
SMM Revision Identifier, Bit 17
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23542A/0-September 2000 Preliminary Information AMD-K6™-2E+ Embedded Processor Data Sheet 12.3 Table 46. SMM State-Save Area Map (continued) Address Offset FF3Ch FF38h FF34h FF30h FF2Ch FF28h FF24h FF20h FF1Ch FF18h FF14h FF10h FF0Ch FF08h FF04h FF02h FF00h FEFCh FEF8h FEF7h-FE00h Contents Saved SS Limit CS Attr CS Base CS Limit ES Attr ES Base ES Limit No data dump at this address No data dump at this address No data dump at this address CR2 CR4 I/O Restart ESI1 I/O Restart ECX1 I/O Restart EDI1 HALT Restart Slot I/O Trap Restart Slot SMM RevID SMM Base No data dump at this address Notes: 1. Only contains information if SMI# is asserted during a valid I/O bus cycle. SMM Revision Identifier The SMM revision identifier at offset FEFCh in the SMM state-save area specifies the version of SMM and the extensions that are available on the processor. The SMM revision identifier fields are as follows: s Bits 31-18-Reserved s Bit 17-SMM base address relocation (1 = enabled) s Bit 16-I/O trap restart (1 = enabled) s Bits 15-0-SMM revision level for the AMD-K6-2E+ proces- sor= 0002h Chapter 12 System Management Mode (SMM) 245