DMA方式在单片微机中的应用

Single Chip Microcomputer-Based DMA Mode

单片微机系统一般不支持DMA方式，即不提供DMA方式所需的引脚、信号、时序等。本文使用DMA芯片8237A，设计并实现了单片机系统下的DMA方式。实际使用证明单片机系统下的DMA方式是可行的。实现了大量数据的快速传递与存贮。

DMA mode cannot be supported by single chip microcomputer system. In this paper DMA chip 8237A is used for implementing DMA mode based on single chip microcomputer system. The real -time uses prove that DMA mode in the system is feasible. Thus mass data transmission in highspeed is brought about in this system.