Undocumented Machine-Specific Registers
AMD Top Secret
Public Machine-Specific Registers
Undocumented Machine-Specific Registers
About the Clock Control Register
Theoretical determination of the Clock Ratio locking
Thermal and electrical specification of the AMD64 CPU's
Thermal and electrical specification of the 7th Gen. CPU's

The undocumented password of 09C5A203Ah provides access to MSRs that are listed in the table below. This list of MSRs is defined for desktop AMD Duron and AMD Athlon family processors.

Updated: 04/16/2006

Address

Register Name

Register Value

Applebred

Thoroughbred

C0011000h MCodeCtl 0000000000000000h 0000000000000000h
C0011001h APIC_ClusterID 0000000000000000h 0000000000000000h
C0011002h ConfigAddrPort 00000000FFFFFFFFh 00000000FFFFFFFFh
C0011003h ConfigDataPort 00000000FFFFFFFFh 00000000FFFFFFFFh
C0011004h 000000000383FBFFh 000000000383FBFFh
C0011005h 00000000C1CBFBFFh 00000000C1CBFBFFh
C0011006h DebugStatus 0000000000000000h 0000000000000000h
C0011007h BHTraceBase 0000000000000000h 0000000000000000h
C0011008h BHTracePtr 0000000000000000h 0000000000000000h
C0011009h BHTracelimit 0000000000000000h 0000000000000000h
C001100Ah HDT_CFG 0000000000000000h 0000000000000000h
C001100Bh Fast Flush Count 00000000000007C0h 00000000000007C0h
C001100Ch IntMstate 0000000000020024h 0000000000020020h
C0011010h BHTraceCTL 0000000000000000h 0000000000000000h
C0011011h BHTraceUsrD 0000000000000000h 0000021200000924h
C0011012h 00000000FFFFFFFFh 000002126C2DB825h
C0011013h FFFFFFFFFFFFFFFFh 0070046500C90F9Eh
C0011014h MobilDebug 0000000000000000h 0000000000000000h
C0011020h K7LS_CFG 0000000000001000h 0000000000001000h
C0011021h IC_CFG 0000000000000000h 0000000000000000h
C0011022h DC_CFG 0000000000000000h 0000000000000000h
C0011023h BU_CFG 0000000000002024h 0000000000002024h
C0011024h DBGCTLMSR2 0000000000000000h 0000000000000000h
C0011025h DR0_Data_Match 0000000000000000h 0000000000000000h
C0011026h DR0_Data_Mask 0000000000000000h 0000000000000000h
C0011027h DR0_ADDR_MASK 0000000000000000h 0000000000000000h
C0011028h 00000000FFFFFFFFh 0000021200C90F9Eh
AMD64 Processor Specific Registers

Address

Register Name

Register Value

ADA3000DAA4BW
CPUID=20FF2h

SDA2500AIO3BX
CPUID=20FC2h

C0011000h MCodeCtl 0000000000000000h 0000000000000000h
C0011001h APIC_ClusterID 0000000000000000h 0000000000000000h
C0011004h 00000001078BFBFFh 00000001078BFBFFh
C0011005h 00000001F3F3FBFFh 00000001F3F3FBFFh
C0011006h DebugStatus 0000000000000000h 0000000000000000h
C0011007h BHTraceBase 0000000000000000h 0000000000000000h
C0011008h BHTracePtr 0000000000000000h 0000000000000000h
C0011009h BHTracelimit 0000000000000000h 0000000000000000h
C001100Ah HDT_CFG 0000000000000000h 0000000000000000h
C001100Bh Fast Flush Count 00000000000007C0h 00000000000007C0h
C001100Ch IntMstate 0000000000000020h 0000000000020906h
C001100Dh LOGICAL_CPUS_NUM 0000000000000000h 0000000000000000h
C001100Eh WRMSRBreakpoint 0000000000000000h 0000000000000000h
C001100Fh WRMSRBreakpointMask 0000000000000000h 0000000000000000h
C0011010h BHTraceCTL 0000000000000000h 0000000000000000h
C0011011h BHTraceUsrD 0000021200000924h 86623EC8C0011011h
C0011012h 00000000FFFFFFFFh 00000000FFFFFFFFh
C0011013h 0070042BFFFF00CCh FFFFFFFFFFFFFFFFh
C0011014h ExcpBP_RIP0000000000000000h 0000000000000000h
C0011015h ExcpBP_RIP_MASK 0000000000000000h 0000000000000000h
C0011016h CondHDT_Value 0000000000000000h 0000000000000000h
C0011017h CondHDT_Value_MASK 0000000000000000h 0000000000000000h
C0011018h ExcpBP_Ctl 0000000000000000h 0000000000000000h
C001101Dh NB Bist 0000000000000000h 0000000000000000h
C001101Eh ThermTrip2 00000000065F0120h 0000000014540C20h
C001101Fh NB_CFG 0000000000000008h 0000000000000008h
C0011020h LS_CFG 0000000000001000h 0000000000001000h
C0011021h IC_CFG 0000000000000000h 0000000000000000h
C0011022h DC_CFG 0000001C36000000h 0000001C36000000h
C0011023h BU_CFG 0000000000002020h 0000000000002020h
C0011024h DBGCTLMSR2 0000000000000000h 0000000000000000h
C0011025h DR0_Data_Match 0000000000000000h 0000000000000000h
C0011026h DR0_Data_Mask 0000000000000000h 0000000000000000h
C0011027h DR0_ADDR_MASK 0000000000000000h 0000000000000000h

Confidential Model Specific Registers

Updated: 04/16/2006

Address

Register Name

Description

C0012000h SRB 000

Control Register 0

C0012001h SRB 001

MSR CR4

C0012100h SRB 100

UC_SPREG_FFPDC_ADDR_SR

C0012101h SRB 101

UC_SPREG_FFPDC_DATA1

C0012102h SRB 102

UC_SPREG_FFPDC_DATA2

C001210Bh SRB 10B

BU_CTL

C0012112h SRB 112

SysInit - Low

C001211Eh L2_DA

L2 debug address register

C0012130h L2_CFG0

L2 configuration register - low

C0012131h L2_CFG1

L2 configuration register - high

C0012132h L2_CFG2

L2 data configuration register

C0012133h L2_CFG3

L2 tag configuration register

C0012168h SRB 168

Victim cache address register

C0012169h SRB 169

Victim cache LRU/ECC register

C001216Ah SRB 16A

Victim cache data Lo register

C001216Bh SRB 16B

Victim cache data Hi register

C00121A0h SRB 1A0

Dcache array access address register

C00121A2h SRB 1A2

Dcache array access data register low

C00121A3h SRB 1A3

Dcache array access data register high

C00121BFh SRB 1BF

Icache Misc. array access data register low

C00121D0h SRB 1D0

breakpoint 0 address mask

C00121D1h SRB 1D1

Icache Misc. array access data register high

C00121D2h SRB 1D2

Icache array access data register low

C00121D3h SRB 1D3

ICache performance monitor control

C00121D4h SRB 1D4

Icache array access address register

C00121D5h SRB 1D5

ICache array access data register high

C00121D6h SRB 1D6

IC_CTL instruction cache control

C00121DCh SRB 1DC

ICache Bist Fatal bit Register

C00121F2h PWR_CTRL

Power control register


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