超常规程序代码自举引导的巧妙实现  

Ingenious Realization for Bootloader on Unconventional Program Code

作　　者：韩学涛[1] 郝燕玲[1] 王忠华[1] 

机构地区：[1]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001

出　　处：《测控技术》2008年第9期60-62,共3页Measurement & Control Technology

摘　　要：传统TMS320VC5416的应用,用户程序往往不会超过常规程序代码的范围。但随着VC5416工程应用的不断深入,出现了超常规程序代码,传统的引导方式已经无法实现VC5416的自启动。为了适应VC5416工程应用的需要,在重点分析了VC5416的存储器结构和配置方式的基础上,提出了采用二次引导和FLASH按页存储的方案,并通过其I/O空间和CPLD的联合译码来巧妙实现FLASH存储页的切换,突破了常规程序代码范围的限制。实践证明,这种方案可以可靠实现超常规程序代码下VC5416的自启动。In the conventional application of TMS320VC5416, the user＇ s program hasn＇t often beyond routine program code. However, with more complicate engineering-oriented application of VC5416, the hyper-conventional program code has presented, and the conventional boot mode can＇t complete the bootload of VC5416. In order to meet the complicate requirement, first and foremost, the memory structure and configuration method of VC5416 are concerned, and then the method of the second-level bootloader and FLASH based on page is presented. The switch of FLASH page is realized by joint decoding of I/O space and CPLD. With the above method, the restriction of routine program code is broken. It has been proved practically that the startup of VC5416 can be achieved safely and reliably with hyper-conventional program code.

关 键 词：TMS320VC5416 二次引导 自启动 扩展寻址 

分 类 号：TP338[自动化与计算机技术—计算机系统结构]