并行接口8255，定时/计时器8253，中断控制器8259A与计算机相连，通过8253产生1Hz的方波，并编程得到计时器，然后利用8259的中断功能和8255的并口输出数据功能做了一实时操作系统，来模拟十字路口交通灯的模拟-8255 parallel interface, timer/timer 8253, 8259A interrupt controller connected to a computer, by 8253 produce 1Hz square wave, and progra

使用8259的单级中断控制实验，显示在一位LED上-Use the 8259 single-level interrupt control experiments, displayed on an LED

直接用手动产生单脉冲作为中断请求信号。 要求每按一次开关产生一次中断,在屏幕上 显示一次“TPCA Interrupt!”,中断10次后 程序退出-Directly by hand to produce a single pulse as an interrupt request signal. Each time you press the switch requires an interrupt is generated, show a TPCA Interrupt! On the sc

微机原理与接口技术，接口实验，使用汇编语言，包括DMA传送、扩展DMA控制器8237、Windows中断、扩展中断控制器8259、可编程并行接8255方式一-Microcomputer Principle and interface technology, interface experiments, the use of assembly language, including the DMA transfer, the DMA controller extension 8237, Windo