par.xmsgs

arm控制FPGA的DDR测试代码

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<messages>
<msg type="info" file="Timing" num="2802" delta="unknown" >Read <arg fmt="%d" index="1">274</arg> constraints.  If you are experiencing memory or runtime issues it may help to consolidate some of these constraints.  For more details please see solution 10784 at support.xilinx.com</msg>

<msg type="info" file="Par" num="253" delta="unknown" >The Map -timing placement will be retained since it is likely to achieve better performance.
</msg>

<msg type="warning" file="Par" num="276" delta="unknown" >The signal <arg fmt="%s" index="1">SYS_CLKb_IBUF</arg> has no load
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">clk_0</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/dqs3_delayed_col1</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/dqs2_delayed_col0</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/dqs1_delayed_col1</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/dqs0_delayed_col0</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/dqs2_delayed_col1</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/dqs0_delayed_col1</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/dqs3_delayed_col0</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/dqs1_delayed_col0</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/data_read_controller0/dqs2_delayed_col0_n</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/data_read0/dqs3_delayed_col0_n</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/data_read0/dqs3_delayed_col1_n</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/data_read0/dqs2_delayed_col1_n</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/data_read0/dqs1_delayed_col0_n</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/data_read0/dqs1_delayed_col1_n</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/data_read0/dqs0_delayed_col0_n</arg> may have excessive skew because 
</msg>

<msg type="warning" file="Route" num="447" delta="unknown" >CLK Net:<arg fmt="%s" index="1">main_00/top0/data_path0/data_read0/dqs0_delayed_col1_n</arg> may have excessive skew because 
</msg>

<msg type="info" file="Par" num="62" delta="unknown" >Your design did not meet timing.  The following are some suggestions to assist you to meet timing in your design.

   Review the timing report using Timing Analyzer (In ISE select &quot;Post-Place &amp;
   Route Static Timing Report&quot;).  Go to the failing constraint(s) and select
   the &quot;Timing Improvement Wizard&quot; link for suggestions to correct each problem.

</msg>

<msg type="info" file="Timing" num="2761" delta="unknown" >N/A entries in the Constraints list may indicate that the constraint does not cover any paths or that it has no requested value.</msg>

<msg type="warning" file="Par" num="284" delta="unknown" >There are <arg fmt="%d" index="1">1</arg> sourceless or loadless signals in this design.

</msg>

</messages>