AMD K5

System Management Mode (SMM) 6-27
18524C/0—Nov1996 AMD-K5 Processor Technical Reference Manual
FF80 TR Attributes 12 (upper 20 reserved) read-only
FF7C TR Base 32 read-only
FF78 TR Limit 20 (upper 12 reserved) read-only
FF74 LDT Attributes 12 (upper 20 reserved) read-only
FF70 LDT Base 32 read-only
FF6C LDT Limit 20 (upper 12 reserved) read-only
FF68 GS Attributes 12 (upper 20 reserved) read-only
FF64 GS Base 32 read-only
FF60 GS Limit 20 (upper 12 reserved) read-only
FF5C FS Attributes 12 (upper 20 reserved) read-only
FF58 FS Base 32 read-only
FF54 FS Limit 20 (upper 12 reserved) read-only
FF50 DS Attributes 12 (upper 20 reserved) read-only
FF4C DS Base 32 read-only
FF48 DS Limit 20 (upper 12 reserved) read-only
FF44 SS Attributes 12 (upper 20 reserved) read-only
FF40 SS Base 32 read-only
FF3C SS Limit 20 (upper 12 reserved) read-only
FF38 CS Attributes 12 (upper 20 reserved) read-only
FF34 CS Base 32 read-only
FF30 CS Limit 20 (upper 12 reserved) read-only
FF2C ES Attributes 12 (upper 20 reserved) read-only
FF28 ES Base 32 read-only
FF24 ES Limit 20 (upper 12 reserved) read-only
FF20 reserved 32 —
FF1C reserved 32 —
FF18 reserved 32 —
FF14 CR2 32 read-only
FF10 CR4 32 read-only
FF0C I/O Restart ESI 32 read-only
FF08 I/O Restart ECX 32 read-only
Table 6-2. SMM State-Save Area Map (continued)
Offset (hex) Contents Size (bits) Type
Notes:
1. Locations marked “reserved” may change in future processors.
2. Writing locations marked as “read-only” has unpredictable results.