Nec Network Controller uPD98502 Manual do Utilizador descarregar pdf (Página 175)

CHAPTER 2 V

R

4120A

Preliminary User’s Manual S15543EJ1V0UM

175

Figure 2-74. Data Check Flow on Store Operations

Start

Write-back and

Refill (see

Figure 2-86

)

END

Hit

V = 0 (invalid)

or

W = 0 (clean)

Miss

V bit, W bit

V = 1

(

valid) and

W = 1 (dirty)

Refill (see

Figure 2-85

)

Tag Check

Data Write

to Data Cache

Figure 2-75. Data Check Flow on Index_Invalidate Operations

Start

Valid bit Clear

END

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