DM643开发板字符叠加功能实现代码，用于实现OSD功能，是非常好的代码-DM643 development board features the realization of characters superimposed code, used to implement OSD function, it is a very good code

自己编写的,采用DSP实现字符叠加的程序,基于合众达SEED-DEC643的扳子,CCS2.2环境,原来的例程是采用FPGA实现字符叠加的,改程序完全采用DSP进行叠加.-I have written using DSP realization of characters superimposed on the procedure, based on the union of the SEED-DEC643 Tatsu wrench, CCS2.2 environment, the origin