Implementation Note:
If the
Processors with cache blocks smaller than 64 bytes are encouraged to implement WH64 as defined. However, they may instead implement the instruction by allocating a smaller aligned cache block for write access or by treating WH64 as a NOP.
Processors with cache blocks larger than 64 bytes are also encouraged to implement WH64 as defined. However, they may instead treat WH64 as a NOP.