AMD-K6 Datasheet, PDF (213/346 Pages) Advanced Micro Devices – AMD-K6 Processor

20695H/0—March 1998
Preliminary Information
AMD-K6^® Processor Data Sheet
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SMM
State-Save
Area
0003_FFFFh
0003_FE00h
32-Kbyte
Minimum RAM
Service Routine Entry Point
SMM
Service Routine
0003_8000h
SMM Base Address (CS)
0003_0000h
Figure 72. SMM Memory
Table 33 shows the initial state of registers when entering SMM.
Table 33. Initial State of Registers in SMM
Registers
General Purpose Registers
EFLAGs
CR0
DR7
GDTR, LDTR, IDTR, TSSR, DR6
EIP
CS
DS, ES, FS, GS, SS
SMM Initial State
unmodified
0000_0002h
PE, EM, TS, and PG are cleared (bits 0, 2, 3,
and 31). The other bits are unmodified.
0000_0400h
unmodified
0000_8000h
0003_0000h
0000_0000h
Chapter 10
System Management Mode (SMM)
195