Write-back, Write allocate Processor issues: address wdata Write-Back Compare address tag against all tags stored in the indexed set Write Allocate Yes No Write Hit? Write D-cache Send block address to Select block Set M-bit lower-level memory to replace lookup victim buffer. If modified, Transfer block move into nto D-cache victim bu Write D-cache Set M-bit 2021-2-4 计算机体系结构Write-back, Write Allocate 2021-2-4 计算机体系结构 38