35-72 Vol. 3C
MODEL-SPECIFIC REGISTERS (MSRS)
209H
521
IA32_MTRR_PHYSMASK4
Core
See Table 35-2.
20AH
522
IA32_MTRR_PHYSBASE5
Core
See Table 35-2.
20BH
523
IA32_MTRR_PHYSMASK5
Core
20CH
524
IA32_MTRR_PHYSBASE6
Core
20DH
525
IA32_MTRR_PHYSMASK6
Core
See Table 35-2.
20EH
526
IA32_MTRR_PHYSBASE7
Core
20FH
527
IA32_MTRR_PHYSMASK7
Core
250H
592
IA32_MTRR_FIX64K_
00000
Core
See Table 35-2.
258H
600
IA32_MTRR_FIX16K_
80000
Core
See Table 35-2.
259H
601
IA32_MTRR_FIX16K_
A0000
Core
See Table 35-2.
268H
616
IA32_MTRR_FIX4K_C0000
Core
See Table 35-2.
269H
617
IA32_MTRR_FIX4K_C8000
Core
See Table 35-2.
26AH
618
IA32_MTRR_FIX4K_D0000 Core
See Table 35-2.
26BH
619
IA32_MTRR_FIX4K_D8000 Core
See Table 35-2.
26CH
620
IA32_MTRR_FIX4K_E0000
Core
See Table 35-2.
26DH
621
IA32_MTRR_FIX4K_E8000
Core
See Table 35-2.
26EH
622
IA32_MTRR_FIX4K_F0000
Core
See Table 35-2.
26FH
623
IA32_MTRR_FIX4K_F8000
Core
See Table 35-2.
277H
631
IA32_PAT
Core
See Table 35-2.
2FFH
767
IA32_MTRR_DEF_TYPE
Core
Default Memory Types (R/W)
See Table 35-2.
309H
777
IA32_FIXED_CTR0
Core
Fixed-Function Performance Counter Register 0 (R/W)
See Table 35-2.
30AH
778
IA32_FIXED_CTR1
Core
Fixed-Function Performance Counter Register 1 (R/W)
See Table 35-2.
30BH
779
IA32_FIXED_CTR2
Core
Fixed-Function Performance Counter Register 2 (R/W)
See Table 35-2.
345H
837
IA32_PERF_CAPABILITIES
Core
See Table 35-2. See Section 17.4.1, “IA32_DEBUGCTL MSR.”
38DH
909
IA32_FIXED_CTR_CTRL
Core
Fixed-Function-Counter Control Register (R/W)
See Table 35-2.
38FH
911
IA32_PERF_GLOBAL_CTRL
Core
See Table 35-2. See Section 18.4.2, “Global Counter Control
3FDH
1021
MSR_CORE_C6_RESIDENCY Core
Note: C-state values are processor specific C-state code names,
unrelated to MWAIT extension C-state parameters or ACPI C-
States.
Table 35-6. MSRs Common to the Silvermont Microarchitecture and Newer Microarchitectures for Intel Atom
Processors
Address
Register Name
Scope
Bit Description
Hex
Dec