回复第 7 楼 wrerer于2008-02-25 02:22:51发表:
Solution
An update to a core now omits certain constraints.
To get the memory test to pass, add the following constraints:
NET "*/DDR_DQ_I*" IOBDELAY=NONE;
NET "*/DDR_DQS_I*" IOBDELAY=NONE;
NET "*/DDR_DQS_T*" IOBDELAY=NONE;
找了好久才找到
去原厂中文网站www.digilentchina.com一问不就知道了。