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一、应用1.用MMU的存储器扩充方法1-1 概述基于页面方式的虚拟存储方式在1960年就由ATLAS考虑过,而应用在近代的中、大型计算机之中。在最近这些年也被应用到了小型计算机中来。差不多到了80年代的现在,应用页面式虚拟存储的处理机中,在最终的8位微处理机,用MC6809和存储器管理单元(MMU)MC6829这两种芯片就可实现。在微型计算机中,不要考虑存储的结构,程序可以动态分配,实际物理地址的生成等全部技术都已经可以实现。如果除去虚拟存储区的大小,实际物理地址的大小,数据字长,处理时间的不同之外,上述思想在小型计
First, the application of 1. MMU memory expansion method 1-1 Overview page-based virtual storage mode in 1960 by ATLAS considered, and used in modern middle and large computers. In recent years these have also been applied to small computers. Almost to the present 80’s now, the application of page virtual memory processor, the final 8-bit microprocessor, with MC6809 and memory management unit (MMU) MC6829 these two chips can be achieved. In microcomputers, regardless of the structure of the store, programs can be dynamically allocated and all of the techniques for generating the actual physical address have been implemented. If the size of the virtual storage area, the size of the actual physical address, the data word length, and the processing time are not the same,