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将H89微型机与CMC-80单板机联接起来,相互传递数据,共同发挥各自的优势,组成开发Z-80程序的系统,它能代替昂贵的微机开发系统的工作。两机相联所增加的硬件仅是两片电平转换器。H89微型机内的8位并竺数据经RS-232接口转换成串行数据格式。通过一片电平转换器的电平转换及逻辑取反后与CMC-80的SЮ相应的三根信号线相连;而CMC-80的SЮ送出的串行信号,经另一片电平转换器送人H89机。只要根据具体情况
The H89 microcomputers and CMC-80 single-board machine linked together, pass the data to each other, to play their respective advantages, the development of the system to develop Z-80 program, it can replace the expensive microcomputer development system. The added hardware of the two machines is just two level translators. H89 microcomputer within the 8-bit and Zhu data via RS-232 interface into a serial data format. Through a level shifter level conversion and logical negation and CMC-80 SЮ corresponding three signal lines connected; and CMC-80’s S the serial signal sent by another level shifter H89 machine. As long as the specific circumstances