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在ISE环境下用VHDL写的8*9FIFO

<td align="center" width="30%">聽</td>
<td align="center" width="10%">MC10</td>
<td align="center" width="10%">聽</td>
<td align="center" width="10%">(b)</td>
<td align="center" width="10%">聽</td>
<td align="center" width="10%">聽</td>
</tr>
<tr>
<td align="center" width="10%">(unused)</td>
<td align="center" width="10%">0</td>
<td align="center" width="30%">聽</td>
<td align="center" width="10%">MC11</td>
<td align="center" width="10%">83</td>
<td width="8%" align="center">I/O</td>
<td align="center" width="10%"><a href="#" onmouseover="this._tip = 'rst'; window.status='Input Signal'; return true;" onmouseout="window.status=''" class="tipBoxCursor">I</a></td>
<td align="center" width="10%">聽</td>
</tr>
<tr>
<td align="center" width="10%">(unused)</td>
<td align="center" width="10%">0</td>
<td align="center" width="30%">聽</td>
<td align="center" width="10%">MC12</td>
<td align="center" width="10%">84</td>
<td width="8%" align="center">I/O</td>
<td align="center" width="10%">聽</td>
<td align="center" width="10%">聽</td>
</tr>
<tr>
<td align="center" width="10%">(unused)</td>
<td align="center" width="10%">0</td>
<td align="center" width="30%">聽</td>
<td align="center" width="10%">MC13</td>
<td align="center" width="10%">85</td>
<td width="8%" align="center">I/O</td>
<td align="center" width="10%">聽</td>
<td align="center" width="10%">聽</td>
</tr>
<tr>
<td align="center" width="10%"><a href="Javascript:showEqn('rdptr0_SPECSIG')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">rdptr&lt;0&gt;</a></td>
<td align="center" width="10%">3</td>
<td align="center" width="30%">聽<a href="Javascript:showPT('FB2_37')" onmouseover="window.status='show Pterm'; return true;" onmouseout="window.status=''">37</a>聽<a href="Javascript:showPT('FB2_38')" onmouseover="window.status='show Pterm'; return true;" onmouseout="window.status=''">38</a>聽<a href="Javascript:showPT('FB2_7')" onmouseover="window.status='show Pterm'; return true;" onmouseout="window.status=''">7</a>
</td>
<td align="center" width="10%">MC14</td>
<td align="center" width="10%">聽</td>
<td align="center" width="10%">(b)</td>
<td align="center" width="10%">(b)</td>
<td align="center" width="10%">clk聽</td>
</tr>
<tr>
<td align="center" width="10%"><a href="Javascript:showEqn('rdptr1_SPECSIG')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">rdptr&lt;1&gt;</a></td>
<td align="center" width="10%">3</td>
<td align="center" width="30%">聽<a href="Javascript:showPT('FB2_35')" onmouseover="window.status='show Pterm'; return true;" onmouseout="window.status=''">35</a>聽<a href="Javascript:showPT('FB2_36')" onmouseover="window.status='show Pterm'; return true;" onmouseout="window.status=''">36</a>聽<a href="Javascript:showPT('FB2_7')" onmouseover="window.status='show Pterm'; return true;" onmouseout="window.status=''">7</a>
</td>
<td align="center" width="10%">MC15</td>
<td align="center" width="10%">聽</td>
<td align="center" width="10%">(b)</td>
<td align="center" width="10%">(b)</td>
<td align="center" width="10%">clk聽</td>
</tr>
<tr>
<td align="center" width="10%"><a href="Javascript:showEqn('rdptr2_SPECSIG')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">rdptr&lt;2&gt;</a></td>
<td align="center" width="10%">3</td>
<td align="center" width="30%">聽<a href="Javascript:showPT('FB2_33')" onmouseover="window.status='show Pterm'; return true;" onmouseout="window.status=''">33</a>聽<a href="Javascript:showPT('FB2_34')" onmouseover="window.status='show Pterm'; return true;" onmouseout="window.status=''">34</a>聽<a href="Javascript:showPT('FB2_7')" onmouseover="window.status='show Pterm'; return true;" onmouseout="window.status=''">7</a>
</td>
<td align="center" width="10%">MC16</td>
<td align="center" width="10%">聽</td>
<td align="center" width="10%">(b)</td>
<td align="center" width="10%">(b)</td>
<td align="center" width="10%">clk聽</td>
</tr>
</table></span></div>
<div id="tipBox"></div>
<br><span id="fbsiguse" class="pgRef"><b>Signals Used By Logic in Function Block</b><br><ol>
<li><a href="Javascript:showEqn('fifo_0_0')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_0_0</a></li>
<li><a href="Javascript:showEqn('fifo_0_1')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_0_1</a></li>
<li><a href="Javascript:showEqn('fifo_0_2')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_0_2</a></li>
<li><a href="Javascript:showEqn('fifo_0_3')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_0_3</a></li>
<li><a href="Javascript:showEqn('fifo_1_0')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_1_0</a></li>
<li><a href="Javascript:showEqn('fifo_1_1')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_1_1</a></li>
<li><a href="Javascript:showEqn('fifo_1_2')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_1_2</a></li>
<li><a href="Javascript:showEqn('fifo_1_3')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_1_3</a></li>
<li><a href="Javascript:showEqn('fifo_2_0')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_2_0</a></li>
<li><a href="Javascript:showEqn('fifo_2_1')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_2_1</a></li>
<li><a href="Javascript:showEqn('fifo_2_2')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_2_2</a></li>
<li><a href="Javascript:showEqn('fifo_2_3')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_2_3</a></li>
<li><a href="Javascript:showEqn('fifo_3_0')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_3_0</a></li>
<li><a href="Javascript:showEqn('fifo_3_1')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_3_1</a></li>
<li><a href="Javascript:showEqn('fifo_3_2')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_3_2</a></li>
<li><a href="Javascript:showEqn('fifo_3_3')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_3_3</a></li>
<li><a href="Javascript:showEqn('fifo_4_0')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_4_0</a></li>
<li><a href="Javascript:showEqn('fifo_4_1')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_4_1</a></li>
<li><a href="Javascript:showEqn('fifo_4_2')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_4_2</a></li>
<li><a href="Javascript:showEqn('fifo_4_3')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_4_3</a></li>
<li><a href="Javascript:showEqn('fifo_5_0')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_5_0</a></li>
<li><a href="Javascript:showEqn('fifo_5_1')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_5_1</a></li>
<li><a href="Javascript:showEqn('fifo_5_2')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_5_2</a></li>
<li><a href="Javascript:showEqn('fifo_5_3')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_5_3</a></li>
<li><a href="Javascript:showEqn('fifo_6_0')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_6_0</a></li>
<li><a href="Javascript:showEqn('fifo_6_1')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_6_1</a></li>
<li><a href="Javascript:showEqn('fifo_6_2')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_6_2</a></li>
<li><a href="Javascript:showEqn('fifo_6_3')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_6_3</a></li>
<li><a href="Javascript:showEqn('fifo_7_0')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_7_0</a></li>
<li><a href="Javascript:showEqn('fifo_7_1')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_7_1</a></li>
<li><a href="Javascript:showEqn('fifo_7_2')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_7_2</a></li>
<li><a href="Javascript:showEqn('fifo_7_3')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">fifo_7_3</a></li>
<li>rdinc</li>
<li><a href="Javascript:showEqn('rdptr0_SPECSIG')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">rdptr&lt;0&gt;</a></li>
<li><a href="Javascript:showEqn('rdptr1_SPECSIG')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">rdptr&lt;1&gt;</a></li>
<li><a href="Javascript:showEqn('rdptr2_SPECSIG')" onmouseover="window.status='show Equation'; return true;" onmouseout="window.status=''">rdptr&lt;2&gt;</a></li>
<li>rdptrclr</li>
<li>rst</li>
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