M68040用户手册(附录A)

The MC68LC040 is Motorola's integer-only version of the MC68040 third-generation,M68000-compatible, high-performance, 32-bit microprocessor. The MC68LC040 is a virtual memory microprocessor with a highly integrated architecture that provides very high performance in a monolithic HCMOS device. On a single chip, the MC68LC040 integrates an MC68040-compatible integer unit and fully independent instruction and data demand-paged memory management units (MMUs), including independent 4-Kbyte instruction and data caches. A high degree of instruction execution parallelism is achieved through the use of a six-stage instruction pipeline, multiple internal buses, and a full internal Harvard architecture,including separate physical caches for both instruction and data accesses. The MC68LC040 also directly supports cache coherency in multimaster applications with dedicated on-chip bus snooping logic.