bit文件还没有开始下载，也就是说在初始化的时候就已经出错了，软件没有认出你的芯片； ERROR:iMPACT:585 - A problem may exist in the hardware configuration. Check that the cable, scan chain, and power connections are intact, that the specified scan chain configuration matches the actual hardware, and that the power supply is adequate and delivering the correct voltage. 如果你能排除以上错误提示中的内容，那么就只有换个芯片试试看了； | 
