AMD AMD-K6-2/500AFX Data Sheet - Page 217
Table 37., Cache States for Inquire Cycles, Snoops, Flushes, and Invalidation, Type of Operation
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21850J/0-February 2000 Preliminary Information AMD-K6®-2 Processor Data Sheet Table 37. Cache States for Inquire Cycles, Snoops, Flushes, and Invalidation Type of Operation Cache State Before Operation Memory Access Inquire Cycle shared or exclusive modified - writeback to bus Internal Snoop shared or exclusive modified - writeback to bus FLUSH# Signal shared or exclusive modified - writeback to bus PFIR* (F/I = 0) shared or exclusive modified - writeback to bus PFIR* (F/I = 1) - - WBINVD Instruction shared or exclusive modified - writeback to bus INVD Instruction - - Notes: All writebacks are 32-byte burst write cycles. - Not applicable or none. * The AMD-K6-2 processor Model 8/[F:8] supports the PFIR. Cache State After Operation MESI State INV=0 INV=1 INV=0 INV=1 shared invalid shared invalid Writeback Writethrough State writethrough invalid writethrough invalid invalid invalid invalid invalid invalid invalid invalid invalid invalid invalid invalid invalid Chapter 7 Cache Organization 197