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如何在CCS2.2中定义64位宽度的变量?



ccs2.2中如何定义64位数据宽度的变量,CCS3.3中可以定义unsigned long long型的变量的宽度是64位的,可是在2.2中这样定义报错。DM642的外部数据总线是64位的,现在要读取外部64位fifo中的数据。请大家赐教