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中断跳转问题

你好:

       我现在手里有C6678开发板,我用C6678汇编,编写一些程序,想要实现9号中断跳转,于是设置了,TSR.GIE=1,CSR.GIE=1,IER.NMIE=1,IER.IE9=1,ISR.IS9=1,在CCS5中选择模拟,则中断可以正常跳转到中断服务程序,但是连接上C6678板子的板子,中断就不能正常跳转中断服务程序。是不是实际的板子有什么特别之处,需要设置?