AMD AMD-K6-2/450 Design Guide - Page 90
Function 8000_0005h - L1 Cache Information, EDX Format Returned by Function 8000_0005h
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Preliminary Information Embedded AMD-K6™ Processors BIOS Design Guide 23913A/0-November 2000 Function 8000_0005h - L1 Cache Information Input: EAX = 8000_0005h Output: EAX = Reserved EBX = TLB Information ECX = L1 Data Cache Information EDX = L1 Instruction Cache Information Function 8000_0005h returns information about the processor's on-chip L1 caches and associated TLBs. Tables 33, 34, and 35 provide the format for the information returned by the 8000_0005h function. Table 33. EBX Format Returned by Function 8000_0005h Data TLB Instruction TLB Associativity1 # Entries Associativity1 # Entries EBX Bits 31-24 Bits 23-16 Bits 15-8 Bits 7-0 Notes: 1. See "Associativity for L1 Caches and L1 TLBs" on page 80 for more information. Table 34. ECX Format Returned by Function 8000_0005h L1 Data Cache Size (Kbytes) Associativity1 Lines per Tag ECX Bits 31-24 Bits 23-16 Bits 15-8 Notes: 1. See "Associativity for L1 Caches and L1 TLBs" on page 80 for more information Line Size (bytes) Bits 7-0 Table 35. EDX Format Returned by Function 8000_0005h L1 Instruction Cache Size (Kbytes) Associativity1 Lines per Tag EDX Bits 31-24 Bits 23-16 Bits 15-8 Notes: 1. See "Associativity for L1 Caches and L1 TLBs" on page 80 for more information. Line Size (bytes) Bits 7-0 78 Appendix A