10. CACHE Instructions

10.12 Hit Invalidate (D)


Hit Invalidate (D) invalidates an entry in the data cache which matches the PA of the CACHE instruction. Both ways tags at VA[13:5] are read from the data cache.

If the DState is not equal to 00 (Invalid) and the PA of the CACHE instruction matches the DTag from the data cache tag array, then the State bits are written to 00 (Invalid), the SCWay bit = 0, the StateMod bits = 0012 (Normal), and the DState parity = 0.

The LRU bit is left unchanged.

Parity check is enabled.

Hit CacheOps can cause cache error exceptions if they check ECC or parity bits.




Copyright 1995, MIPS Technologies, Inc. -- 29 JAN 96


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