DMA

单词DMA

基本解释

n.: 直接内存存取（全写为 direct memory access，无须使用中央处理器）
网络: 直接内存访问(Direct Memory Access)；直接存储器存取；直接存储器访问

权威解释

• 直接存储器存取，直接内存存取（全写为 direct memory access，无须使用中央处理器）:

  the abbreviation fordirect memory access (a system that allows a device attached to a computer to take data from the computer"s memory without using the central processing unit )

英汉解释

• 甲胂钠

• 美国国防制图局

• 二甲苯胺法

• 存贮器直接存取

• 国防部矿产管理局

• 直接内存访问

例句

• An unrecognized error occurred while trying to register ownership of the hardware DMA channel assigned to this device .

  注册分配给这个设备的硬件DMA频道的所有权时，出现了一个无法辨别的错误。

• As you may have guessed, most of the interesting parts of the program are taking place on the SPE, including all of the DMA transfers.

  正如您所猜测的那样，程序大多数有趣的部分都发生在SPE，包括所有的DMA传输。

• The first copy is performed by the DMA engine, which reads file contents from the disk and stores them into a kernel address space buffer.

  直接内存存取（directmemoryaccess，DMA）引擎执行了第一次拷贝（参见图1），它从磁盘中读取文件内容，然后将它们存储到一个内核地址空间缓存区中。

• The tag_id allows for you to retrieve the status of the DMA operation.

  tag_id让您可以检索DMA操作的状态。

• In this application, you will only have one DMA command active at a time, so all of your operations will use 0 as the DMA tag.

  在这个应用程序中，一次只有一个DMA命令是激活的，所以所有的操作都将使用0作为DMA标签。

• Dynamic mechanical analysis (DMA) and the stress-strain behavior revealed that the system is excellent low temperature toughness.

  通过对增韧体系应力应变特性和动态力学性能的研究表明，该体系具有优异的低温韧性。

• Even the enhanced version of the MCS51 compatible MCU almost has no DMA ability.

  即使增强板的MCS51相容微控制器也几乎缺少DMA的能力。

• A DMA request always involves moving data between the SPE local store and a virtual address space on the PPE side.

  DMA请求通常会涉及数据在SPE本地存储与PPE端虚拟地址空间之间进行移动。

• Because DMA commands are asynchronous, it is useful to be able to wait for one to complete.

  由于DMA命令是异步的，所以如能等待一个命令完成，将十分有用。

• For instance, one of the problems with the original code is that it is limited to the size of a DMA transfer.

  举例来说，原来代码的一个问题是一次DMA传输的大小有限制。