2014-04-16 17:35:30
ISE MAP报错： Unsupported programming for BSCAN block and JTAG_CHAIN attribute value 1
具体报错信息如下：
PhysDesignRules:1683 - Unsupported programming for BSCAN block and JTAG_CHAIN attribute value 1. The BSCAN
component disp_emif_for_feed_data/icon_2/U0/U_ICON/I_YES_BSCAN.U_BS/I_V6.ISYN.I_USE_SOFTBSCAN_EQ0.U_BS has placement
which requires the JTAG_CHAIN attribute to be set to the value 2. The JTAG_CHAIN attribute must be changed or the
programming for the BSCAN block must be moved to a location corresponding to the JTAG_CHAIN attribute setting.
ERROR:Pack:1642 - Errors in physical DRC.
解决方法：
参考http://china.xilinx.com/support/answers/36901.htm以及http://www.xilinx.com/support/answers/42858.htm，猜测可能是使用多个ICON核导致的。报错工程中确实使用了2个ICON核，将其中一个ICON核的BSCAN属性改为USER2，问题解决。