说明：  from wangkj@yahoo.com 电路原理图和详细说明： amd.9966.org或者 arm.9966.org 都是原创,包括boot, loader,u-boot,linux 和测试程序 这些都是针对那个网站板子的配套程序，板子可以按照该网站提供的联系方式联系获取 这是最简单的一个外设驱动的例子，驱动喇叭发声的。主要是方便初学者有个容易上手而设计的。
(from wangkj@yahoo.com circuit schematic and a detailed description: amd.9966.org or arm.9966.org are original, including the boot, loader, u-boot, linux and test procedures are all directed against the board supporting the site procedures, board can be provided in accordance with the site contact to obtain This is the simplest example of a peripheral-driven, horn-driven sound of. Is mainly for beginners to have a convenient and easy to use design.)