论文部分内容阅读
本文以APPLEⅡ系统和ZD-C65单板机为例,叙述了以6502芯片为CPU、以6522芯片做接口的两台计算机互连通讯的硬件设计和软件设计。两台计算机互连通讯采用的是并行传送、中断请求的方式。相互通讯自的两台计算机,在不同时间中,既能当主机,又能当从机,既能发送数据,又能接收数据。两台计算机中的数据交换量(字节数)和数据所在的内存地址都可以由用户根据需要选定。采用这种互连通讯的方法之后,两台计算机之间的数据传送速率约17 KB/S,数据交换量从1个字节到65K字节。
This text takes APPLEⅡ system and ZD-C65 single board computer as examples, narrates the hardware design and software design of two computer interconnection communication taking 6502 chip as CPU and 6522 chip as interface. Two computer interconnection communication is used in parallel transmission, interrupt request mode. Intercommunication between the two computers at different times, both as a host, but also as a slave, both to send data, but also receive data. The amount of data exchanged (in bytes) in both computers and the memory address where the data resides can be selected by the user as needed. With this method of interconnection communication, the data transfer rate between the two computers is about 17 KB / s and the data exchange volume is from 1 byte to 65K bytes.