The idcode read from the device does not match the idcode in the bsdl File.
xilinx ise下载出现以下问题
PROGRESS_START - Starting Operation.
INFO:iMPACT:583 - '1': The idcode read from the device does not match the idcode in the bsdl File.
INFO:iMPACT:1578 - '1': Device IDCODE : 00001111111111111111111111111111
INFO:iMPACT:1579 - '1': Expected IDCODE: 00000010101011010110000010010011
PROGRESS_END - End Operation.
Elapsed time = 0 sec.
解决办法:
1、硬件问题,这种可能性很小。
2、右击右边空白区域,选择initialize chain,一般都是由此问题引起的。