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看一下Show Building Settings...->General->DSP/BIOS version下拉菜单里是否有5.42.1.09可以选。如果没有的话，按照下面的方法安装。 http://processors.wiki.ti.com/index.php/Category:Steps_to_install_BIOS/DSP_in_CCS6_and_Run_C55xx_CSL_examples
