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