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VR4102 Datasheet(PDF) 223 Page - NEC

Part # VR4102
Description  64/32-bit Microprocessor
PDF  701 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

VR4102 Datasheet(HTML) 223 Page - NEC

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CHAPTER 8 CACHE MEMORY
223
Figure 8-11. Data Integrity on Index_Invalidate Operations
OK, DE = 1
or ERL = 1
Start
Error
TagParity
Cache Error
Exception
Valid bit clear
END
Figure 8-12. Data Integrity on Index_Writeback_Invalidate Operations
OK, DE = 1
or ERL = 1
Start
Error
Tag Parity,
Wbit Parity
Cache Error
Exception
Valid bit
Writeback
Data
Parity
(See Figure 8-20)
Wbit
Valid bit and
Wbit clear
END
Cache Error
Exception
= 0
Error
= 1 (valid)
= 1 (dirty)
OK, DE = 1
or ERL = 1
= 0 (clean)



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