While DMA transfers are an excellent way of moving bulk data between the SPE and the PPE, another simpler method for smaller transfers which I will briefly discuss is mailboxes.

虽然dma传输是一个很好的在SPE和PPE传输大量数据的方法，但对于小型的数据传输来说，还有另一种更为简单的方法，即邮箱，在这里简单介绍一下。

youdao

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；

youdao

I slowly debugged the DMA unit the same way as the T65, sometimes adjusting clock timing if data values were not being read properly.

我使用与T65一样的方法缓慢的调试d MA单元。有时候如果数据值读得不对，就调整时钟时间。

youdao

During the 80s, I remember learning that IBM held the original patents for stuff like DMA and interrupt controllers, 1 which surprised me because by that time those things were like oxygen: just a standard part of every computer in the world.

FORBES: The Problem With Patents