Model-Specific Registers Overview; Summary By Register Of Msr Differences Within The Amd-K6™ Family - AMD -K6-2/450 - MHz Processor Application Note

Embedded AMD-K6™ Processors BIOS Design Guide

Model-Specific Registers Overview

Table 7. Summary by Register of MSR Differences within the AMD-K6™ Family
Register
Machine-Check Address Register
Machine-Check Type Register
Test Register 12
Time Stamp Counter
Extended Feature Enable Register
Write Handling Control Register
SYSCALL/SYSRET Target Address Register
UC/WC Cacheability Control Register
Processor State Observability Register
Page Flush/Invalidate Register
14
Preliminary Information
Each of the models of the AMD-K6 processor family support a
different set of model-specific registers (MSRs). These
differences are summarized by register in Table 7. The
differences are summarized by model in Table 8 on page 15,
where an 'X' indicates support for a register or field.
The content of ECX selects the MSR to be addressed by the
RDMSR and WRMSR instruction.
Mnemonic
MCAR
MCTR
TR12
TSC
EFER
WHCR
STAR
UWCCR
PSOR
PFIR
ECX Value Models
00h All
01h All
0Eh All
10h All
7, 8/[7:0]
C000_0080h 8/[F:8]
9, D
7, 8/[7:0]
C000_0082h
8/[F:8], 9, D
7
C000_0081h
8, 9, D
7, 8/[7:0]
C000_0085h
8/[F:8], 9, D
7, 8/[7:0]
C000_0087h 8/[F:8], 9, D
2
D
7, 8/[7:0]
C000_0088h
8/[F:8], 9, D
Model-Specific Registers Overview
23913A/0—November 2000
Description
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