NEC Network Controller uPD98502 User Manual

Page 177

CHAPTER 2 V

4120A

Preliminary User’s Manual S15543EJ1V0UM

177

Figure 2-78. Data Check Flow on Index_Store_Tag Operations

Start

Tag Write

from TagLo

END

Figure 2-79. Data Check Flow on Create_Dirty Operations

Start

Write-back
(see Figure 2-84)

END

Miss or Invalid

V bit, W bit

= 1 (dirty)

Tag Check

V bit and W bit set,

Tag write

Hit

= 0 (Clean)