摘要
微程序控制器模型机的基本思想,是把操作控制信号编成"微指令",存放到只读存储器里。当机器运行时,模型机在微程序控制下,一条又一条地读出这些微指令,从而产生模型机所需要的各种操作控制信号,实现特定指令的功能,使相应部件执行所规定的操作。为了完善基本模型机的结构和性能,利用微程序控制模型机的数据通路,增加设计端口的读写指令,控制外围接口8255芯片,详细设计了模型机的指令系统,构成一台完整的模型机,完善了模型机的结构,扩大了模型机的功能。
Microprogramming control model machine is to program control signals into mieroinstructions and store into ROM. When the machine runs, these microinstruetions are read one by one and the control signals are produced correspondingly. To improve the construct and performance of the basic model machine, through data path of the ,nodel machine controlled by micro program parallel, the authors designed port commands of reading and writing to control 8255 chip. Firstly, designed the instruction set of the model mac-hine. Secondly, gave the electric＇ circuit to realize the function of parallel port. Finally, the whole model machine were formed. Then the model structure is more perfect and the function of model machine is enlarged.
出处
《实验室研究与探索》
CAS
北大核心
2012年第10期50-52,77,共4页
Research and Exploration In Laboratory
基金
国家自然科学基金项目(60803032
60970001)
山东科技大学教学研究项目(No.qx102051)
