AMD AMD-K6-2/450 Design Guide - Page 35

23913A/0-November 2000 Preliminary Information Embedded AMD-K6™ Processors BIOS Design Guide Model 8/[F:8] Registers The AMD-K6-2 processor Model 8/[F:8] and AMD-K6-2E processor Model 8/[F:8] provides the ten MSRs listed in Table 12. The contents of ECX select the MSR to be addressed by the RDMSR and WRMSR instruction. Table 12. Model-Specific Registers Supported by Model 8/[F:8] Register Name Mnemonic ECX Value Machine-Check Address Register MCAR 00h Machine-Check Type Register MCTR 01h Test Register 12 TR12 0Eh Time Stamp Counter TSC 10h Extended Feature Enable Register EFER C000_0080h Write Handling Control Register WHCR C000_0082h SYSCALL/SYSRET Target Address Register STAR C000_0081h UC/WC Cacheability Control Register UWCCR C000_0085h Processor State Observability Register PSOR C000_0087h Page Flush/Invalidate Register PFIR C000_0088h Description Comments page 16 Identical on all models page 16 Identical on all models page 16 Identical on all models page 16 Identical on all models page 24 Newly defined for Model 8/[F:8] page 27 Newly defined for Model 8/[F:8] page 22 Identical to Model 8/[7:0] page 30 New for Model 8/[F:8] page 34 New for Model 8/[F:8] page 36 New for Model 8/[F:8] Model 8/[F:8] Registers 23