摘要
便携性与实时性的要求使得嵌入式系统需要具备自启动功能,在DM642的平台上,阐述FLASH的工作原理以及其与DM642的硬件结构,研究DM642从外围FLASH自启动及多级引导程序开发原理,并结合自己的实际经验,针对使用CPLD和FPGA的不同系统,详细介绍其FLASH在线编程的步骤,实现大型应用程序的自启动加载DSP系统。
Requirement of portability and real- time ability, the embedded system needs a self- starting function. Based on DM642 platform,the principle of FLASH memory and the hardware structure are introduced,DM642 self- startup procedure from the FLASH memory is studied. According to the writer＇s own actual experience, it is an innovation that the development process and implementation method of multi--level bootloader for the system are proposed in detail used either CPLD or FPGA. A DSP self - startup system with a large - scale applications is realized.
出处
《现代电子技术》
2008年第22期8-11,共4页
Modern Electronics Technique
