Public Machine-Specific Registers
	AMD ECSD Product Roadmap (December 2008) 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 following table shows the full list of all free accessed Machine-Specific Registers of desktop AMD Athlon XP processor Updated: 01/07/2004 Address Register Name Description Value 00000000h MCAR Machine Check Address Register 0000000FFFFFFFFFh 00000001h MCTR Machine Check Type Register 0000000000000000h 00000010h TSC Time Stamp Counter 00000049203B5713h 0000001Bh APIC_BASE APIC Register 00000000FEE00100h 0000002Ah EBL_CR_POWERON APIC Register 0000000000000000h 0000008Bh 0000000000000000h 000000FEh MTRRcap Memory Typing Register 0000000000000508h 00000174h SYSENTER_CS System Software Register 0000000000000000h 00000175h SYSENTER_ESP System Software Register 0000000000000000h 00000176h SYSENTER_EIP System Software Register 0000000000000000h 00000179h MCG_CAP Global Machine Check Capabilities Register 0000000000000104h 0000017Ah MCG_STATUS Global Machine Check Processor Status Register 0000000000000000h 0000017Bh MCG_CTL Global Machine Check Exception Reporting Control Register 0000000000000000h 000001D9h DebugCtl Software Debug Register 0000000000000000h 000001DBh LastBranchFromIP Software Debug Register 00000000FFFFBFE4h 000001DCh LastBranchToIP Software Debug Register 00000000FFECFFD7h 000001DDh LastExceptionFromIP Software Debug Register 0000000000000000h 000001DEh LastExceptionToIP Software Debug Register 0000000000000000h 00000200h MTRRphysBase0 Memory Typing Register 0000000000000006h 00000201h MTRRphysMask0 Memory Typing Register 0000000FE0000800h 00000202h MTRRphysBase1 Memory Typing Register 00000000E8000001h 00000203h MTRRphysMask1 Memory Typing Register 0000000FFC000800h 00000204h MTRRphysBase2 Memory Typing Register 00000000E8000001h 00000205h MTRRphysMask2 Memory Typing Register 0000000FFC000800h 00000206h MTRRphysBase3 Memory Typing Register 0000000000000000h 00000207h MTRRphysMask3 Memory Typing Register 0000000000000000h 00000208h MTRRphysBase4 Memory Typing Register 0000000000000000h 00000209h MTRRphysMask4 Memory Typing Register 0000000000000000h 0000020Ah MTRRphysBase5 Memory Typing Register 0000000000000000h 0000020Bh MTRRphysMask5 Memory Typing Register 0000000000000000h 0000020Ch MTRRphysBase6 Memory Typing Register 0000000000000000h 0000020Dh MTRRphysMask6 Memory Typing Register 0000000000000000h 0000020Eh MTRRphysBase7 Memory Typing Register 0000000000000000h 0000020Fh MTRRphysMask7 Memory Typing Register 0000000000000000h 00000250h MTRRfix64K_00000 Memory Typing Register 0606060606060606h 00000258h MTRRfix16K_80000 Memory Typing Register 0606060606060606h 00000259h MTRRfix16K_A0000 Memory Typing Register 0101010100000000h 00000268h MTRRfix4K_C0000 Memory Typing Register 0505050505050505h 00000269h MTRRfix4K_C8000 Memory Typing Register 0000000000000000h 0000026Ah MTRRfix4K_D0000 Memory Typing Register 0000000000000000h 0000026Bh MTRRfix4K_D8000 Memory Typing Register 0000000000000000h 0000026Ch MTRRfix4K_E0000 Memory Typing Register 0000000000000000h 0000026Dh MTRRfix4K_E8000 Memory Typing Register 0000000000000000h 0000026Eh MTRRfix4K_F0000 Memory Typing Register 0000000000000000h 0000026Fh MTRRfix4K_F8000 Memory Typing Register 0000000000000000h 00000277h PAT Page Attribute Table Register 0007040600070406h 000002FFh MTRRdefType Memory Typing Register 0000000000000C00h 00000400h MC0_CTL DC Machine Check Control Register 0000000000000000h 00000401h MC0_STATUS DC Machine Check Status Register 2C64A0000000B768h 00000402h MC0_ADDR DC Machine Check Address Register 000000055DBFB98Fh 00000403h MC0_MISC 0000000000000000h 00000404h MC1_CTL IC Machine Check Control Register 0000000000000000h 00000405h MC1_STATUS IC Machine Check Status Register 5B9A7BFAAAA2AAAAh 00000406h MC1_ADDR IC Machine Check Address Register 1B9A7BFAAAA2AAAAh 00000407h MC1_MISC 0000000000000000h 00000408h MC2_CTL BU Machine Check Control Register 0000000000000000h 00000409h MC2_STATUS BU Machine Check Status Register 0000000000000000h 0000040Ah MC2_ADDR BU Machine Check Address Register 0000000FD73EBC48h 0000040Bh MC2_MISC 0000000FD73EBC48h 0000040Ch MC3_CTL LS Machine Check Control Register 0000000000000000h 0000040Dh MC3_STATUS LS Machine Check Status Register 0000000000000000h 0000040Eh MC3_ADDR LS Machine Check Address Register 0000000FFFFFFFFFh 0000040Fh MC3_MISC 0000000000000000h C0000080h EFER Extended Feature Enable Register 0000000000000000h C0000081h STAR SYSCALL/SYSRET Target Address Register 0000000000000000h C0010000h PerfEvtSel0 Performance Event-Select Register 00000000ED8FFFFCh C0010001h PerfEvtSel1 Performance Event-Select Register 00000000FE9DFFBAh C0010002h PerfEvtSel2 Performance Event-Select Register 00000000F39DBFEBh C0010003h PerfEvtSel3 Performance Event-Select Register 000000009F9FEEFFh C0010004h PerfCtr0 Performance Counter 0000FFA87FFDEAD8h C0010005h PerfCtr1 Performance Counter 00005EAEDFF7AD01h C0010006h PerfCtr2 Performance Counter 0000EBFCAD7FCEEDh C0010007h PerfCtr3 Performance Counter 0000D3EED7FBFFF1h C0010010h SYS_CFG System Configuration Register 0000000000140604h C0010015h HWCR Hardware Control Register 0000000003031008h C0010016h IORRBase 0000000000000000h C0010017h IORRMask 0000000000000000h C0010018h IORRBase 00000000E8000018h C0010019h IORRMask 0000000FFC000800h C001001Ah TOP_MEM Memory Typing Register 0000000020000000h C001001Bh CLK_CTL Clock Control Register 0000000020031223h C001001Dh TOP_MEM2 Memory Typing Register 000000093D000000h C001001Eh MANID Manufacturing Identification Register 000000000000011Eh C0010030h Processor Name String 6C68744120444D41h C0010031h Processor Name String 5820296D74286E6Fh C0010032h Processor Name String 002B303030322050h C0010033h Processor Name String 0000000000000000h C0010034h Processor Name String 0000000000000000h C0010035h Processor Name String 0000000000000000h C0010100h SysBus_IOBase 00000000FC000000h C0010101h SysBus_ConfigBase System Bus Configuration Base 0000000000000000h C0010102h SysBus_IAckBase 00000000F8000000h C0010103h SysBus_SpecCycBase 00000000F8000000h C0010104h 0000000000000011h C0010105h 0000000000050002h C0010106h 0000000000050002h C0010111h SMM_BASE 00000000000B0000h C0010112h SMM_ADDR 0000000000000000h C0010113h SMM_MASK 0000000000000001h C0010114h 0000020C0F0F0F0Fh C0010115h SysBus_Special1QW 000F0F0F0F0F0F0Fh C0010116h 000F020C0F0F0F0Fh C0010117h 000F0F0F0F0F0F0Fh Central Brain Identifier support@softnology.biz