我发现在iMPACT里，我做blank check，主画面上显示：part is blank但是下面的信息栏里出现： INFO:iMPACT - Current time: ������ ���PROGRESS_START - Starting Operation. Maximum TCK operating frequency for this device chain: 10000000. Validating chain... Boundary-scan chain validated successfully. '1': Putting device in ISP mode...done '1': Putting device in ISP mode...done '1': Performing blank check on device... INFO:iMPACT:2488 - The operation did not complete successfully. PROGRESS_END - End Operation. Elapsed time =      0 sec. � 9 18:48:57 2011 � 9 18:48:36 2011 � 9 18:47:21 2011 � 9 18:18:49 2011 � 9 18:16:12 2011 � 9 18:16:02 2011 � 9 18:15:05 2011 � 9 18:14:43 2011 � 9 18:14:37 2011 如果我退出jMPACT，将目标板断电，然后再次上电，进入iMPACT，进行blank check ，就会显示part is not blank。 我这是usb下载线有问题啊，还是ise有问题啊，还是板子有问题啊？ [ 本帖最后由 sunjia_wang 于 2011-3-9 19:04 编辑 ]

多谢斑竹有个答复了！可是我看了一下，读出的东西，贴上来看看，怎么判断我读出的东西不对呢？ JEDEC Programming File for D:/gps/gps/gps.jed Date: Fri Feb 11 10:58:41 2011 QF290304* QP0* F0* X0* N DEVICE xc95288-XXXXX* L0000000 00000011* L0000008 00000001* L0000016 00000011* L0000024 00000001* L0000032 00000011* L0000040 00000011* L0000048 00000111* L0000056 00000011* L0000064 00000011* L0000072 000000* L0000078 000000* L0000084 000001* L0000090 000000* L0000096 000001* L0000102 000000* L0000108 00000011* L0000116 00000011* L0000124 00000010* L0000132 00000001* L0000140 00000011* L0000148 00000110* L0000156 00000011* L0000164 00000010* L0000172 00000000* L0000180 000000* L0000186 000001* L0000192 000000* L0000198 000000* L0000204 000000* L0000210 000000* L0000216 00000010* L0000224 00000011* L0000232 00000010* L0000240 00000010* L0000248 00000011* L0000256 00000100* L0000264 00000011* L0000272 00000001* L0000280 00000000* L0000288 000000* L0000294 000000* L0000300 000000* L0000306 000000* L0000312 000000* L0000318 000000* L0000324 00000011* L0000332 00000011* L0000340 00000011* L0000348 00000011* L0000356 00000001* L0000364 00000011* L0000372 00000011* L0000380 00000011* L0000388 00000011* 后面还有很多，类似的！