我在做实验教程中的实验十(电压监控实验)中,当分配完引脚后,点击“检查”按钮后,提示如下错误:Error: PRL13: Cannot place the instance rst_pad on the Lower Right quadrant locations because the instance Analog_inst/AB_INST connected to the clock net cannot be assigned to a quadrant. This instance must be placed on a middle left or middle right global locations.
清帮忙解释一下什么意思?如何解决? (我是完全按照教程上的步骤做下来的呀!) |