35-304 Vol. 3C
MODEL-SPECIFIC REGISTERS (MSRS)
35.19 MSRS IN INTEL
®
CORE
™
SOLO AND INTEL
®
CORE
™
DUO PROCESSORS
Model-specific registers (MSRs) for Intel Core Solo, Intel Core Duo processors, and Dual-core Intel Xeon processor
LV are listed in Table 35-44. The column “Shared/Unique” applies to Intel Core Duo processor. “Unique” means
each processor core has a separate MSR, or a bit field in an MSR governs only a core independently. “Shared”
means the MSR or the bit field in an MSR address governs the operation of both processor cores.
107D0H
MSR_EMON_L3_CTR_CTL4
6
Shared
FSB Event Control and Counter Register
(R/W)
See Section 18.17, “Performance
Monitoring on 64-bit Intel Xeon Processor
MP with Up to 8-MByte L3 Cache” for
details.
107D1H
MSR_EMON_L3_CTR_CTL5
6
Shared
FSB Event Control and Counter Register
(R/W)
107D2H
MSR_EMON_L3_CTR_CTL6
6
Shared
FSB Event Control and Counter Register
(R/W)
107D3H
MSR_EMON_L3_CTR_CTL7
6
Shared
FSB Event Control and Counter Register
(R/W)
Table 35-44. MSRs in Intel® Core™ Solo, Intel® Core™ Duo Processors, and Dual-Core Intel® Xeon® Processor LV
Register
Address
Register Name
Shared/
Unique
Bit Description
Hex
Dec
0H
0
P5_MC_ADDR
Unique
See Section 35.22, “MSRs in Pentium Processors,” and see
1H
1
P5_MC_TYPE
Unique
See Section 35.22, “MSRs in Pentium Processors,” and see
6H
6
IA32_MONITOR_FILTER_
SIZE
Unique
See Section 8.10.5, “Monitor/Mwait Address Range Determination,”
and see Table 35-2.
10H
16
IA32_TIME_STAMP_
COUNTER
Unique
See Section 17.15, “Time-Stamp Counter,” and see Table 35-2.
17H
23
IA32_PLATFORM_ID
Shared
Platform ID (R)
See Table 35-2.
The operating system can use this MSR to determine “slot”
information for the processor and the proper microcode update to
load.
1BH
27
IA32_APIC_BASE
Unique
See Section 10.4.4, “Local APIC Status and Location,” and see
2AH
42
MSR_EBL_CR_POWERON
Shared
Processor Hard Power-On Configuration (R/W)
Enables and disables processor features; (R) indicates current
processor configuration.
0
Reserved.
Table 35-43. MSRs Unique to Intel® Xeon® Processor 7100 Series (Contd.)
Register Address
Register Name
Fields and Flags
Model Avail-
ability
Shared/
Unique
Bit Description