AMD-K6-2E Datasheet, PDF (58/332 Pages) Advanced Micro Devices – AMD-K6™-2E Embedded Processor

AMD-K6™-2E Processor Data Sheet
Preliminary Information
22529B/0—January 2000
3.2
Model-Specific Registers (MSR)
The AMD-K6-2E processor is based on and functionally
identical to the AMD-K6-2 processor Model 8/[F:8], which
provides ten model-specific registers (MSRs).
s The value in the ECX register selects the MSR to be
addressed by the RDMSR and WRMSR instructions.
s The values in EAX and EDX are used as inputs and outputs
by the RDMSR and WRMSR instructions.
Table 5 lists the MSRs and the corresponding value of the ECX
register. Figures 30 through 39 show the MSR formats.
Table 5. AMD-K6™-2E Processor Model 8/[F:8] Model-Specific Registers
Model-Specific Register
Machine-Check Address Register (MCAR)
Machine-Check Type Register (MCTR)
Test Register 12 (TR12)
Time Stamp Counter (TSC)
Extended Feature Enable Register (EFER)
SYSCALL/SYSRET Target Address Register (STAR)
Write Handling Control Register (WHCR)
UC/WC Cacheability Control Register (UWCCR)
Processor State Observability Register (PSOR)
Page Flush/Invalidate Register (PFIR)
Value of ECX
00h
01h
0Eh
10h
C000_0080h
C000_0081h
C000_0082h
C000_0085h
C000_0087h
C000_0088h
For more information about the MSRs, see the AMD-K6®
Processor BIOS Design Application Note, order #21329.
For more information about the RDMSR and WRMSR
instructions, see the AMD K86™ Family BIOS and Software Tools
Development Guide, order #21062.
40
Software Environment
Chapter 3