英特尔公司生产的以8085A微处理器为中央处理器的单板机SDK—85,具有速度快、中断能力强、单电源供电、安装和扩展方便、价格便宜等优点。再加上8085A与8080、Z—80等几种微处理器的软件兼容性,可以方便地在Z—80或8080微型机系统(如CROMEMCO、TRS—80、IMSAI8080等)上调试软件,因此,它深受国内外用户的欢迎,被广泛用于教学与科研。 笔者设计了一种SDK—85单板机的扩展 The 8085A microprocessor-based single-board Slot Machine SDK-85 produced by Intel Corporation has the advantages of fast speed, strong interrupt capability, single power supply, convenient installation and expansion, and low price. Coupled with the software compatibility of the 8085A with several microprocessors such as the 8080 and the Z-80, it is easy to debug software on the Z-80 or 8080 microcomputer systems such as CROMEMCO, TRS-80, IMSAI8080, etc. Therefore, It is welcomed by users at home and abroad, is widely used in teaching and research. I designed a SDK-85 single board machine expansion