 The 82497 Cache Controller implements the MESI write-back protocol for full multiprocessing support.Dual ported buffers and registers allow the 82497 to concurrently handle CPU bus, memory bus, and internal cache operation for maximum performance.The 82497 Cache Controller with multiple 82492 Cache SRAMs combine with the Pentium processor (735\90,815\100, 1000\120, 1110\133) to form a CPU cache chip set designed for high performance servers and function-rich desktops.