This thesis introduce the specialties of BDM in details, and discuss the design methods of software and hardware of BDM debug system based on MCF5272 (a kind of microprocessor of ColdFire series) .

• 本文将详细的介绍BDM调试方式的特点,并在基础上针对ColdFire系列处理器MCF5272讨论了BDM调试系统的软硬件设计方法。