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OMAPL132 ARM端速度问题

程序在SHARM RAM中运行,ARM的工作时钟是192M,PLL0_SYSCLK2的时钟是192/2=96M.在程序中,定义一个变量unsigned int i;然后单步i=1;这行i=1运行使用了20个clock.请问这个时间正常吗?感觉比较长.谢谢.