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📁 浙江大学计算机学院计算机组成教材《计算机组成与设计》（潘学增）的课堂教学课件。
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<h3 align="center"><font color="#000000">微指令的格式       
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font></h3>      
      
      
      
   
   
   
   
<h3 align="center"><font color="#000000" size="4">&nbsp; <a href="7.htm">返回</a></font></h3>    
    
    
    
    
    
    
    
<table border="1" width="86%" bordercolordark="#663300" bordercolorlight="#993300">    
  <tr>    
    <td width="9%" align="center"><b><font color="#000000" size="4">ALU控制</font></b></td>   
    <td width="6%" align="center"><b><font color="#000000" size="4">SRC1</font></b></td>   
    <td width="6%" align="center"><b><font color="#000000" size="4">SRC2</font></b></td>   
    <td width="16%" align="center"><b><font color="#000000" size="4">ALU Destination</font></b></td>     
    <td width="9%" align="center"><b><font color="#000000" size="4">Memory</font></b></td>   
    <td width="16%" align="center"><b><font color="#000000" size="4">Memory Register</font></b></td>     
    <td width="13%" align="center"><b><font color="#000000" size="4">PCWrite&nbsp;&nbsp; contril</font></b></td>      
    <td width="25%" align="center"><b><font color="#000000" size="4">Sequencing</font></b></td>    
  </tr>    
</table>    
    
    
    
<p><font color="#000000" size="4">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 各字段的定义如下</font></p>      
      
      
      
      
      
      
      
<table border="1" width="100%" bordercolordark="#663300" bordercolorlight="#993300">      
  <tr>      
    <td width="20%" align="center"><b><font color="#000000" size="4">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;    
      Field       
    Name</font></b></td>      
    <td width="80%" align="center"><b><font color="#000000" size="4">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;    
      Function of&nbsp;&nbsp; field</font></b></td>     
  </tr>     
  <tr>     
    <td width="20%" align="center"><b><font color="#000000" size="4">ALU Control</font></b></td>      
    <td width="80%" align="center"><b><font color="#000000" size="4">Specify the operation being done by the      
      ALU during this clock</font></b></td>     
  </tr>     
  <tr>     
    <td width="20%" align="center"><b><font color="#000000" size="4">SRC!</font></b></td>   
    <td width="80%" align="center"><b><font color="#000000" size="4">Specify the source for the first ALU      
      operand</font></b></td>     
  </tr>     
  <tr>     
    <td width="20%" align="center"><b><font color="#000000" size="4">SRC2</font></b></td>   
    <td width="80%" align="center"><b><font color="#000000" size="4">Specify the source for the second ALU      
      operand</font></b></td>     
  </tr>     
  <tr>     
    <td width="20%" align="center"><b><font color="#000000" size="4">ALU Destination</font></b></td>      
    <td width="80%" align="center"><b><font color="#000000" size="4">Specify a register to be written from the      
      ALU result</font></b></td>     
  </tr>     
  <tr>     
    <td width="20%" align="center"><b><font color="#000000" size="4">Memory</font></b></td>   
    <td width="80%" align="center"><b><font color="#000000" size="4">Specify read or write and the address      
      source</font></b></td>     
  </tr>     
  <tr>     
    <td width="20%" align="center"><b><font color="#000000" size="4">Memory Register</font></b></td>      
    <td width="80%" align="center"><b><font color="#000000" size="4">Specify the register destination (for a      
      memory read)</font></b></td>     
  </tr>     
  <tr>     
    <td width="20%" align="center"><b><font color="#000000" size="4">PCWrite Control</font></b></td>      
    <td width="80%" align="center"><b><font color="#000000" size="4">Specify the writing of the PC</font></b></td>     
  </tr>     
  <tr>     
    <td width="20%" align="center"><b><font color="#000000" size="4">Squencing</font></b></td>   
    <td width="80%" align="center"><b><font color="#000000" size="4">Specify how to choose the next      
      microinstruction to be executed</font></b></td>     
  </tr>     
</table>     
     
    
    
<p><font color="#000000" size="4">原则：</font></p>   
   
<p><font color="#000000" size="4">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;       
互斥的控制信号归入同一字段，可同时执行的控制信号编入不同字段</font></p>      
      
      
      
      
      
      
      
<h3><font color="#000000" size="4">各字段的值和功用</font></h3>  
  
  
  
<p>　</p>  
  
  
  
  
  
  
  
<table border="1" width="101%" height="718" bordercolordark="#CC9966" bordercolorlight="#FFCC66">  
  <tr>  
    <td width="33%" align="center" height="63"><h3><b><font color="#000000" size="4">&nbsp;&nbsp;    
      Ficld Name</font></b></h3>      
        
           
       
    </td>     
    <td width="33%" align="center" height="63"><h3><b><font color="#000000" size="4">&nbsp;&nbsp;&nbsp;&nbsp;    
      &nbsp; Value&nbsp; of       
    &nbsp;&nbsp; field</font> </b></h3>      
      
           
     
    </td>     
    <td width="34%" align="center" height="63"><h3><b><font color="#000000" size="4">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;    
      Function&nbsp;&nbsp; of&nbsp; field&nbsp; with&nbsp; specific value</font></b></h3>      
      
           
     
    </td>     
  </tr>     
  <tr>     
    <td width="33%" rowspan="3" align="center" height="75"><h3><b><font color="#000000" size="4">&nbsp; ALU Control</font></b></h3>      
      
           
     
    </td>     
    <td width="33%" align="center" height="22"><h3><b><font color="#000000" size="4">&nbsp;      
Add</font></b></h3>     
     
          
    
    </td>    
    <td width="34%" align="center" height="22"><b><font color="#000000" size="4">Cause the ALU to add</font></b>     
           
    </td>     
  </tr>     
  <tr>     
    <td width="33%" align="center" height="19"><h3><b> <font color="#000000" size="4"> Function code</font></b></h3>     
     
          
    
    </td>    
    <td width="34%" align="center" height="19"><b><font color="#000000" size="4">Use the instruction's function     
      code to determine ALU control</font></b>    
          
    </td>    
  </tr>    
  <tr>    
    <td width="33%" align="center" height="22"><h3><b> <font color="#000000" size="4"> &nbsp;Subt</font></b></h3>  
  
        
  
    </td>  
    <td width="34%" align="center" height="22"><b><font color="#000000" size="4">Cause the ALU to subtract</font></b>    
          
    </td>    
  </tr>    
  <tr>    
    <td width="33%" rowspan="2" align="center" height="50"><h3><b><font color="#000000" size="4">&nbsp; SRC1</font></b></h3>      
      
           
     
    </td>     
    <td width="33%" align="center" height="22"><h3><b><font color="#000000" size="4">&nbsp;      
PC</font></b></h3>     
     
          
    
    </td>    
    <td width="34%" align="center" height="22"><b><font color="#000000" size="4">Use the PC as the first ALYU      
      input</font></b>     
           
    </td>     
  </tr>     
  <tr>     
    <td width="33%" align="center" height="22"><h3><b><font color="#000000" size="4">&nbsp;      
    rs</font></b></h3>     
     
          
    
    </td>    
    <td width="34%" align="center" height="22"><b><font color="#000000" size="4">Register rs is the first ALU      
      input</font></b>     
           
    </td>     
  </tr>     
  <tr>     
    <td width="33%" rowspan="4" align="center" height="106"><h3><b><font color="#000000" size="4">&nbsp; SRC2</font></b></h3>      
      
           
     
    </td>     
    <td width="33%" align="center" height="22"><h3><b><font color="#000000" size="4">&nbsp;      
4</font></b></h3>     
     
          
    
    </td>    
    <td width="34%" align="center" height="22"><b><font color="#000000" size="4">Use 4 for the second ALU input</font></b>     
           
    </td>     
  </tr>     
  <tr>     
    <td width="33%" align="center" height="22"><h3><b><font color="#000000" size="4">&nbsp;&nbsp;
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