| 信息交换中的DMA技术 |
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| 引用本文： | 周文刚,李慧华.信息交换中的DMA技术[J].周口师范学院学报,2002,19(5):56-60. |
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| 作者姓名： | 周文刚 李慧华 |
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| 作者单位： | 1. 周口师范学院,计算机科学系
2. 周口市编制委员会,河南,周口,466000 |
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| 摘 要： | DMA技术广泛应用于外围设备与内存成批信息交换的控制过程中，它的优势是在数据传送过程中不需CPU的参与，实现了CPU处理任务和内存数据交换的并行进行，提高了计算机的整体性能，本文从DMA技术的硬件构成角度，深入介绍了DMAC的硬件逻辑组成和DMA数据传送的流程。
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| 关 键 词： | DMA技术 DMA控制器 DMAC 数据交换 数据传送 I／O设备 信息交换 |
| 文章编号： | 1671-9476(2002)05-0056-05 |
| 修稿时间： | 2001年11月27 |
The technology of DMA used in the control of information exchange |
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| ZHOU Wen gang ,LI Huei hua.The technology of DMA used in the control of information exchange[J].Journal of Zhoukou Normal University,2002,19(5):56-60. |
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| Authors: | ZHOU Wen gang LI Huei hua |
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| Institution: | ZHOU Wen gang 1,LI Huei hua 2 |
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| Abstract: | The technology of DMA is widely used in the control of information exchange between peripheral and memory,the advantage of this technology is the procedure of data transportation which can be done without CPU,CPU processing task and memory data exchange can be done in parallel,so it can improve the whole performance of computer.From the angle of the form of hardware of the technology of DMA,the paper has introduced the logic form of DMAC hardware and the flow of DMA data transpotation. |
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| Keywords: | information technology of DMA direct memory access controller |
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