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參數(shù)資料
| 型號(hào)： | AMDATHLON |
| 英文描述： | AMD Athlon - AMD Athlon Processor Model 4 Revision Guide |
| 中文描述： | AMD速龍- AMD速龍?zhí)幚砥餍吞?hào)4次指南 |
| 文件頁數(shù)： | 11/19頁 |
| 文件大?。?/td> | 201K |
| 代理商： | AMDATHLON |
11
24332G—October 2003
AMD Athlon Processor Model 6 Revision Guide
Preliminary Information
20
Processor Performance Counters Do Not Count Some x86 Instructions
Products Affected.
A0, A2, A5
Normal Specified Operation.
The processor should count all x86 instructions when programmed to do so.
Non-conformance.
There are two types of uncounted instructions. One set of instructions is always
uncounted. Another set of instructions are uncounted only if a certain data dependency exists.
Instructions never counted are: RDMSR, WRMSR, FSTENV, FSAVE, FLDENV, FPTAN, FYL2XP1,
FCLEX, LLDT, LTR, MOV CRx, LGDT, LIDT, INVLPG, INVD, WBINVD, MOV DRx, CPUID, and
SFENCE.
Instructions that are uncounted only when certain data dependencies exist are:
■
LAR, LSL, VERR, VERW if they clear the Zero Flag
FXSAVE, FXRSTOR if FERR is changed
FPU instructions with exceptional data conditions
IO instructions that detect an interrupt
POPF with the trap flag =1
POPFD and PUSHFD with IOPL not equal 3 and Virtual Mode enabled
POPFD when Alignment Check is being enabled
MOV SS with the trap flag =1
Segment Loads that generate accessed bit exceptions
STI with the trap flag or the interrupt flag already a 1
CLTS with the CR0.TS flag =1
LMSW that changes any bit
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Potential Effect on System.
Performance counter may under count the actual number of x86 instructions.
Suggested Workaround.
Versions of the AMD Athlon processor not affected by this erratum may be used
to gather instruction counts.
Resolution Status.
No fix planned.
相關(guān)PDF資料 |
PDF描述 |
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| AMDATHLON64 | AMD Athlon 64 - Report of Management on Processor Performance Benchmarks AMD Athlon 64 Processor 3200+ |
| AMDATHLONMP | AMD Athlon MP - AMD Athlon MP Processor Model 6 Data Sheet |
| AMDATHLONXP | AMD Athlon XP - AMD Athlon XP Processor Model 8 Data Sheet |
| AMDDURON | AMD Duron - AMD Duron Processor Model 3 Revision Guide |
| AMDK86 | AMD K86 - AMD K86 Family BIOS and Software Tools Developers Guide |
相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| AMDC-204 | 制造商:Advanced Micro Devices 功能描述:4 CONTACT(S), BOARD MOUNT, DIN CONNECTOR |
| AMD-EL350 | 制造商:SMC Corporation of America 功能描述:Element Assembly, Replacement, Glass Fiber, for AMD350 Micromist Separator |
| AMD-EL450 | 制造商:SMC Corporation of America 功能描述:Filter Element for micromist separator |
| AMD-EL650 | 制造商:SMC Corporation of America 功能描述:Element for AMD650 micromist separator |
| AMD-K5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AMD-K5 Processor Thermal Considerations Application Note |
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