先正确赋值XBSR，把EMIF口模式配对，再看第二个问题。
试试直接对XBSR赋值。
#define XBSR *(volatile ioport unsigned int* )0x6c00
XBSR=0x0a01;
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帖子: RE: 5509的按键扫描程序从CCS3.3导入到CCS5.5中报错
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