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The 82385 Cache Controller is a high performance 32-bit peripheral for the intel 386 Microprocessor. it stores a copy of frequently accessed code and data from main memory in a zero wait state local cache memory. The 82385 enables the 386 DX to run at its full potential by reducing the average number of CPU wait states to nearly zero. The dual bus architecture of the 82385 allows other masters to access system resources while the 386 DX operates locally out of its cache. In this situation, the 82385's "bus watching" mechanism preserves cache coherency by monitoring the system bus address lines at no cost to system or local throughput.

The 82385 is completely software transparent, protecting the integrity of system software. High performance and board savings are achieved because the 82385 integrates a cache directory and all cache management logic on one chip

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