xst.xmsgs

如何使用ISE和FPGA使用指南

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<messages>
<msg type="warning" file="HDLCompilers" num="261" delta="unknown" ><arg fmt="%s" index="1">&quot;ch_fifo.v&quot; line 61 </arg>Connection to output port &apos;<arg fmt="%s" index="2">DOP</arg>&apos; does not match port size
</msg>

<msg type="warning" file="HDLCompilers" num="261" delta="unknown" ><arg fmt="%s" index="1">&quot;ch_fifo.v&quot; line 64 </arg>Connection to output port &apos;<arg fmt="%s" index="2">RDCOUNT</arg>&apos; does not match port size
</msg>

<msg type="warning" file="HDLCompilers" num="261" delta="unknown" ><arg fmt="%s" index="1">&quot;ch_fifo.v&quot; line 66 </arg>Connection to output port &apos;<arg fmt="%s" index="2">WRCOUNT</arg>&apos; does not match port size
</msg>

<msg type="warning" file="HDLCompilers" num="261" delta="unknown" ><arg fmt="%s" index="1">&quot;ch_fifo.v&quot; line 61 </arg>Connection to output port &apos;<arg fmt="%s" index="2">DOP</arg>&apos; does not match port size
</msg>

<msg type="warning" file="HDLCompilers" num="261" delta="unknown" ><arg fmt="%s" index="1">&quot;ch_fifo.v&quot; line 64 </arg>Connection to output port &apos;<arg fmt="%s" index="2">RDCOUNT</arg>&apos; does not match port size
</msg>

<msg type="warning" file="HDLCompilers" num="261" delta="unknown" ><arg fmt="%s" index="1">&quot;ch_fifo.v&quot; line 66 </arg>Connection to output port &apos;<arg fmt="%s" index="2">WRCOUNT</arg>&apos; does not match port size
</msg>

<msg type="warning" file="HDLCompilers" num="261" delta="unknown" ><arg fmt="%s" index="1">&quot;ch_fifo.v&quot; line 61 </arg>Connection to output port &apos;<arg fmt="%s" index="2">DOP</arg>&apos; does not match port size
</msg>

<msg type="warning" file="HDLCompilers" num="261" delta="unknown" ><arg fmt="%s" index="1">&quot;ch_fifo.v&quot; line 64 </arg>Connection to output port &apos;<arg fmt="%s" index="2">RDCOUNT</arg>&apos; does not match port size
</msg>

<msg type="warning" file="HDLCompilers" num="261" delta="unknown" ><arg fmt="%s" index="1">&quot;ch_fifo.v&quot; line 66 </arg>Connection to output port &apos;<arg fmt="%s" index="2">WRCOUNT</arg>&apos; does not match port size
</msg>

<msg type="warning" file="HDLCompilers" num="261" delta="unknown" ><arg fmt="%s" index="1">&quot;ch_fifo.v&quot; line 61 </arg>Connection to output port &apos;<arg fmt="%s" index="2">DOP</arg>&apos; does not match port size
</msg>

<msg type="warning" file="HDLCompilers" num="261" delta="unknown" ><arg fmt="%s" index="1">&quot;ch_fifo.v&quot; line 64 </arg>Connection to output port &apos;<arg fmt="%s" index="2">RDCOUNT</arg>&apos; does not match port size
</msg>

<msg type="warning" file="HDLCompilers" num="261" delta="unknown" ><arg fmt="%s" index="1">&quot;ch_fifo.v&quot; line 66 </arg>Connection to output port &apos;<arg fmt="%s" index="2">WRCOUNT</arg>&apos; does not match port size
</msg>

<msg type="warning" file="Xst" num="2193" delta="unknown" >&quot;<arg fmt="%s" index="1">correlate_and_accumulate.v</arg>&quot; line <arg fmt="%d" index="2">27</arg>: Defparam through hierarchy is partially supported and may give incorrect results. It is recommended that you avoid using this construct.
</msg>

<msg type="warning" file="Xst" num="2193" delta="unknown" >&quot;<arg fmt="%s" index="1">correlate_and_accumulate.v</arg>&quot; line <arg fmt="%d" index="2">28</arg>: Defparam through hierarchy is partially supported and may give incorrect results. It is recommended that you avoid using this construct.
</msg>

<msg type="warning" file="Xst" num="2193" delta="unknown" >&quot;<arg fmt="%s" index="1">correlate_and_accumulate.v</arg>&quot; line <arg fmt="%d" index="2">29</arg>: Defparam through hierarchy is partially supported and may give incorrect results. It is recommended that you avoid using this construct.
</msg>

<msg type="warning" file="Xst" num="2193" delta="unknown" >&quot;<arg fmt="%s" index="1">correlate_and_accumulate.v</arg>&quot; line <arg fmt="%d" index="2">30</arg>: Defparam through hierarchy is partially supported and may give incorrect results. It is recommended that you avoid using this construct.
</msg>

<msg type="info" file="Xst" num="1304" delta="unknown" >Contents of register &lt;<arg fmt="%s" index="1">i</arg>&gt; in unit &lt;<arg fmt="%s" index="2">data_output_mux</arg>&gt; never changes during circuit operation. The register is replaced by logic.
</msg>

<msg type="info" file="Xst" num="1304" delta="unknown" >Contents of register &lt;<arg fmt="%s" index="1">j</arg>&gt; in unit &lt;<arg fmt="%s" index="2">pn_correlation</arg>&gt; never changes during circuit operation. The register is replaced by logic.
</msg>

<msg type="info" file="Xst" num="1304" delta="unknown" >Contents of register &lt;<arg fmt="%s" index="1">j</arg>&gt; in unit &lt;<arg fmt="%s" index="2">pn_correlation_fsm</arg>&gt; never changes during circuit operation. The register is replaced by logic.
</msg>

<msg type="info" file="Xst" num="1304" delta="unknown" >Contents of register &lt;<arg fmt="%s" index="1">k</arg>&gt; in unit &lt;<arg fmt="%s" index="2">pn_correlation_fsm</arg>&gt; never changes during circuit operation. The register is replaced by logic.
</msg>

<msg type="warning" file="Xst" num="1872" delta="unknown" >Variable &lt;<arg fmt="%s" index="1">j</arg>&gt; is used but never assigned.
</msg>

<msg type="warning" file="Xst" num="1872" delta="unknown" >Variable &lt;<arg fmt="%s" index="1">k</arg>&gt; is used but never assigned.
</msg>

<msg type="info" file="Xst" num="1813" delta="unknown" >Unable to extract FSM on signal &lt;<arg fmt="%s" index="1">cs</arg>&gt; : outputs depend on both state and next state.
</msg>

<msg type="info" file="Xst" num="2117" delta="unknown" >HDL ADVISOR - Mux Selector &lt;<arg fmt="%s" index="1">cs</arg>&gt; of Case statement line <arg fmt="%s" index="2">38</arg> was re-encoded using one-hot encoding. The case statement will be optimized (default statement optimization), but this optimization may lead to design initialization problems. To ensure the design works safely, you can:
	- add an &apos;<arg fmt="%s" index="3">INIT</arg>&apos; attribute on signal &lt;<arg fmt="%s" index="4">cs</arg>&gt; (optimization is then done without any risk)
	- use the attribute &apos;<arg fmt="%s" index="5">signal_encoding</arg> <arg fmt="%s" index="6">user</arg>&apos; to avoid onehot optimization
	- use the attribute &apos;<arg fmt="%s" index="7">safe_implementation</arg> <arg fmt="%s" index="8">yes</arg>&apos; to force XST to perform a safe (but less efficient) optimization
</msg>

<msg type="warning" file="Xst" num="1872" delta="unknown" >Variable &lt;<arg fmt="%s" index="1">j</arg>&gt; is used but never assigned.
</msg>

<msg type="warning" file="Xst" num="646" delta="unknown" >Signal &lt;<arg fmt="%s" index="1">prev_ch</arg>&gt; is assigned but never used.
</msg>

<msg type="info" file="Xst" num="1813" delta="unknown" >Unable to extract FSM on signal &lt;<arg fmt="%s" index="1">cs</arg>&gt; : outputs depend on both state and next state.