但是也有很多以前的体系不支持直接存储器存取。
However, there are some legacy systems that do not support DMA.
通过所述直接存储器存取引擎并且在没有主机处理器干预的情况下执行所述多个程序中的两个或更多的程序；
The direct memory access engine executes two or more of the plurality of programs without intervention by a host processor.
ECC控制器将数据发送给用于将数 据传送到主机装置的直接存储器存取（DMA）缓冲器以及用于对数据进行错误 检测和纠错的ECC块。
The ECC controller transmits the data to a direct memory access (DMA) buffer for transfer to the host device, and to an ECC block for error detection and correction of the data.
该系统实现了可编程输入输出（PIO）和超级直接存储器存取（UDMA）两种模式，实际运行效果良好，达到USB2 .0的高速率传输要求。
The system realizes two modes of PIO and UDMA. The running practice shows good effect and the high speed transmission of USB2.0 is achieved.
在硬件设计主要介绍系统组成中的外部存储器模块与视频输入输出模块，介绍了使用片上支持库编写DM642中视频驱动程序的方法，以及编写过程中DM642中断和直接存储器存取（DMA）的应用；
The hardware chapter introduces the external memory module and video I/O module, programs video-driver for the DM642 by using CSL, discuss the applications of interrupt and direct memory access (DMA).
在随机存取存储器中，计算机能够直接找到你想要的信息。
In random access storage, the computer can go directly to the information you want.
直接存取存储器比顺序存储器要快多了。
Direct access storage is much faster than sequential storage.
内存是中央处理机能直接存取指令和数据的存储器。
Memory is a function of direct access to central processing instruction and data memory.
到输出的时候，只需直接追踪到正确的最初寄存器加以输出，以上过程省去了每段的回溯过程，可省去判断位元的存取和存储器模块。
When being output, the correct initial register is traced and output. The process saves the back-track process of each block, and the judging process of the access and the memory module of the bit.
到输出的时候，只需直接追踪到正确的最初寄存器加以输出，以上过程省去了每段的回溯过程，可省去判断位元的存取和存储器模块。
When being output, the correct initial register is traced and output. The process saves the back-track process of each block, and the judging process of the access and the memory module of the bit.
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