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134 AMD Geode™ LX Processors Data Book
CPU Core Register Descriptions
33234H
5.5.2.26 Segment Base/Limit MSRs
The segment base/limit MSRs provide access to the segment limit and segment base parts of a segment register. The limit
value is the true limit; it does not need to be altered based on the limit granularity bit. The contents of segment registers
should be accessed using MOV or SVDC/RSDC.
ES Segment Base/Limit MSR (ES_BASE_MSR)
CS Segment Base/Limit MSR (CS_BASE_MSR)
SS Segment Base/Limit MSR (SS_BASE_MSR)
DS Segment Base/Limit MSR (DS_BASE_MSR)
FS Segment Base/Limit MSR (FS_BASE_MSR)
GS Segment Base/Limit MSR (GS_BASE_MSR)
LDT Segment Base/Limit MSR (LDT_BASE_MSR)
Temp Segment Base/Limit MSR (TEMP_BASE_MSR)
TSS Segment Base/Limit MSR (TSS_BASE_MSR)
IDT Segment Base/Limit MSR (IDT_BASE_MSR)
GDT Segment Base/Limit MSR (GDT_BASE_MSR)
SMM Segment Base/Limit MSR (SMM_BASE_MSR
DMM Segment Base/ Limit MSR (DMM_BASE_MSR)
MSR Address 00001330h
Typ e R /W
Reset Value xxxxxxxx_xxxxxxxxh
MSR Address 00001331h
Typ e R /W
Reset Value xxxxxxxx_xxxxxxxxh
MSR Address 00001332h
Typ e R /W
Reset Value xxxxxxxx_xxxxxxxxh
MSR Address 00001333h
Typ e R /W
Reset Value xxxxxxxx_xxxxxxxxh
MSR Address 00001334h
Typ e R /W
Reset Value xxxxxxxx_xxxxxxxxh
MSR Address 00001335h
Typ e R /W
Reset Value xxxxxxxx_xxxxxxxxh
MSR Address 00001336h
Typ e R /W
Reset Value xxxxxxxx_xxxxxxxxh
MSR Address 00001337h
Type R /W
Reset Value xxxxxxxx_xxxxxxxxh
MSR Address 00001338h
Type R /W
Reset Value xxxxxxxx_xxxxxxxxh
MSR Address 00001339h
Type R /W
Reset Value xxxxxxxx_xxxxxxxxh
MSR Address 0000133Ah
Type R /W
Reset Value xxxxxxxx_xxxxxxxxh
MSR Address 0000133Bh
Type R /W
Reset Value xxxxxxxx_xxxxxxxxh
MSR Address 0000133Ch
Type R /W
Reset Value xxxxxxxx_xxxxxxxxh
Segment Base/Limit MSR Register Map
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
LIMIT
313029282726252423222120191817161514131211109876543210
BASE
Segment Base/Limit MSR Bit Descriptions
Bit Name Description
63:32 LIMIT Segment Limit.
31:0 BASE Segment Base.