Data Check Flow On Index_Writeback_Invalidate Operations; Data Check Flow On Index_Load_Tag Operations - NEC uPD98502 User Manual

Figure 2-76. Data Check Flow on Index_Writeback_Invalidate Operations
Figure 2-77. Data Check Flow on Index_Load_Tag Operations
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CHAPTER 2 V 4120A
R
Start
= 0 ( Invalid )
V bit
= 1 ( Valid )
= 0 ( Clean )
W bit
= 1 (dirty)
Write-back
(see Figure 2-84)
Valid bit and
W bit Clear
END
Start
Tag Read to TagLo
Data cache only
W bit Read to TagLo
END
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