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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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<table border="1" width="100%" bordercolordark="#CC9966" bordercolorlight="#FFCC66">
  <tr>
    <td width="50%" align="center"><b><font color="#000000" size="4">Field</font></b></td>
  <td width="50%" align="center"><b><font color="#000000" size="4">Effect</font></b></td>
</tr>
<tr>
  <td width="50%" align="center"><b><font color="#000000" size="4">ALU control,SRC1,SRC2</font></b></td>  
<td width="50%" align="center"><b><font color="#000000" size="4">The ALU continues the same operation .The ALU   
  dest field specifies that rd is used to choose the destination register.</font></b></td>  
</tr>  
<tr>  
  <td width="50%" align="center"><b><font color="#000000" size="4">Sequencing</font></b></td>
<td width="50%" align="center"><b><font color="#000000" size="4">Go to the next microinstruction</font></b></td>  
</tr>  
</table>  
 
<p><b><font color="#000000" size="4">下面我们再来看看beq指令：</font></b></p>



<table border="1" width="100%" bordercolordark="#CC9966" bordercolorlight="#FFCC66">
  <tr>
    <td width="11%">
      
      <p align="center"><b><font color="#000000" size="4">Label</font></b></td>
  <td width="11%">
    
    <p align="center"><b><font color="#000000" size="4">ALU control</font></b></td>  
<td width="11%">  
   
  <p align="center"><b><font color="#000000" size="4">SRC1</font></b></td>
<td width="11%">
  
  <p align="center"><b><font color="#000000" size="4">SRC2</font></b></td>
<td width="11%">
  
  <p align="center"><b><font color="#000000" size="4">ALU destination</font></b></td>  
<td width="11%">  
   
  <p align="center"><b><font color="#000000" size="4">Memory</font></b></td>
<td width="11%">
  
  <p align="center"><b><font color="#000000" size="4">Memory register</font></b></td>  
<td width="11%">  
   
  <p align="center"><b><font color="#000000" size="4">PCWrite control</font></b></td>  
<td width="12%">  
   
  <p align="center"><b><font color="#000000" size="4">Sequencing</font></b></td>
</tr>
<tr>
  <td width="11%">
    
    <p align="center"><b><font color="#000000" size="4">BEQ1</font></b></td>
<td width="11%">
  
  <p align="center"><b><font color="#000000" size="4">Subt</font></b></td>
<td width="11%">
  
  <p align="center"><b><font color="#000000" size="4">rs</font></b></td>
<td width="11%">
  
  <p align="center"><b><font color="#000000" size="4">rt</font></b></td>
<td width="11%" align="center">
  
  <p align="center"><font color="#000000" size="4">　</font></td>
<td width="11%" align="center">
  
  <p align="center">　</td>
<td width="11%" align="center">
  
  <p align="center">　</td>
<td width="11%" align="center">
  
  <p align="center"><b><font color="#000000" size="4">Target-cond</font></b></td>
<td width="12%" align="center">
  
  <p align="center"><b><font color="#000000" size="4">Fetch</font></b></td>
</tr>
</table>

<p><font color="#000000" size="4">　</font></p>
<p><b><font color="#000000" size="4">解释：</font></b></p>



<table border="1" width="100%" bordercolordark="#CC9966" bordercolorlight="#FFCC66">
  <tr>
    <td width="50%" align="center"><b><font color="#000000" size="4">Field</font></b></td>
  <td width="50%" align="center"><b><font color="#000000" size="4">Effect</font></b></td>
</tr>
<tr>
  <td width="50%" align="center"><b><font color="#000000" size="4">ALU control,SRC1,SRC2</font></b></td>  
<td width="50%" align="center"><b><font color="#000000" size="4">The ALU subtract the register operands to   
  generate the Zero output</font></b></td>  
</tr>  
<tr>  
  <td width="50%" align="center"><b><font color="#000000" size="4">PCWrite control</font></b></td>  
<td width="50%" align="center"><b><font color="#000000" size="4">Cause the PC to be written using the value in   
  target , if the Zero output of ALU is true</font> </b></td>  
</tr>  
<tr>  
  <td width="50%" align="center"><b><font color="#000000" size="4">Sequencing</font></b></td>
<td width="50%" align="center"><b><font color="#000000" size="4">Go to the microinstruction labeled Fetch&nbsp;</font>           
  </b></td>          
</tr>          
</table>          
      
<p><font color="#000000" size="4">　</font></p>
<p><b><font color="#000000" size="4">最后我们再来看看J指令：</font></b></p>



<table border="1" width="100%" bordercolordark="#CC9966" bordercolorlight="#FFCC66">
  <tr>
    <td width="11%">
      
      <p align="center"><b><font color="#000000" size="4">Label</font></b></td>
  <td width="11%">
    
    <p align="center"><b><font color="#000000" size="4">ALU control</font></b></td>  
<td width="11%">  
   
  <p align="center"><b><font color="#000000" size="4">SRC1</font></b></td>
<td width="11%">
  
  <p align="center"><b><font color="#000000" size="4">SRC2</font></b></td>
<td width="11%">
  
  <p align="center"><b><font color="#000000" size="4">ALU destination</font></b></td>  
<td width="11%">  
   
  <p align="center"><b><font color="#000000" size="4">Memory</font></b></td>
<td width="11%">
  
  <p align="center"><b><font color="#000000" size="4">Memory register</font></b></td>  
<td width="11%">  
   
  <p align="center"><b><font color="#000000" size="4">PCWrite control</font></b></td>  
<td width="12%">  
   
  <p align="center"><b><font color="#000000" size="4">Sequencing</font></b></td>
</tr>
<tr>
  <td width="11%" align="center"><b><font color="#000000" size="4">JUMP1</font></b></td>
<td width="11%" align="center"><font color="#000000" size="4">　</font></td>
<td width="11%" align="center">　</td>
<td width="11%" align="center">　</td>
<td width="11%" align="center">
  
  <p align="center">　</td>
<td width="11%" align="center">
  
  <p align="center">　</td>
<td width="11%" align="center">
  
  <p align="center">　</td>
<td width="11%" align="center">
  
  <p align="center"><b><font color="#000000" size="4">jump address</font></b></td>          
<td width="12%" align="center">          
        
  <p align="center"><b><font color="#000000" size="4">Fetch</font></b></td>     
</tr>     
</table>     
     
<p align="left"><b><font color="#000000" size="4">解释</font></b></p>     
     
     
     
<table border="1" width="100%" bordercolordark="#CC9966" bordercolorlight="#FFCC66">     
  <tr>     
    <td width="50%" align="center"><b><font color="#000000" size="4">Field</font></b></td>     
  <td width="50%" align="center"><b><font color="#000000" size="4">Effect</font></b></td>     
</tr>     
<tr>     
  <td width="50%" align="center"><b><font color="#000000" size="4">ALU control,SRC1,SRC2</font></b></td>       
<td width="50%" align="center"><b><font color="#000000" size="4">Causes the PC to be written using the jump        
  field</font></b></td>       
</tr>       
<tr>       
  <td width="50%" align="center"><b><font color="#000000" size="4">Sequencing</font></b></td>     
<td width="50%" align="center"><b><font color="#000000" size="4">Go to the microinstruction labeled Fetch</font></b></td>       
</tr>       
</table>       
      
<p align="left"><b><font color="#000000" size="4">我们知道，微指令的执行过程就是产生各种的控制信号，我们来具体的看看</font></b></p>    
    
<p align="left"><b><font color="#000000" size="4">这一个步骤：</font></b></p>    
    
<p align="left"><b><font color="#000000" size="4">如图：</font></b></p>    
    
<p align="left"><font color="#000000" size="4"><img border="0" src="Image/7-2.gif" width="490" height="600"></font></p>    
    
<p align="left"><b><font color="#000000" size="4">其中：</font></b></p>    
    
    
    
<table border="1" width="43%" bordercolordark="#CC9966" bordercolorlight="#FFCC66">    
  <tr>    
    <td width="50%" align="center"><b><font color="#000000" size="4">Addrctl value</font></b></td>          
  <td width="50%" align="center"><b><font color="#000000" size="4">Action</font></b></td>     
</tr>     
<tr>     
  <td width="50%" align="center"><b><font color="#000000" size="4">0</font></b></td>     
<td width="50%" align="center"><b><font color="#000000" size="4">Set state to 0</font> </b></td>       
</tr>       
<tr>       
  <td width="50%" align="center"><b><font color="#000000" size="4">1</font></b></td>     
<td width="50%" align="center"><b><font color="#000000" size="4">Dispatch with ROM2</font></b></td>       
</tr>       
<tr>       
  <td width="50%" align="center"><b><font color="#000000" size="4">2</font></b></td>     
<td width="50%" align="center"><b><font color="#000000" size="4">Dispatch with ROM1</font></b></td>       
</tr>       
<tr>       
  <td width="50%" align="center"><b><font color="#000000" size="4">3</font></b></td>     
<td width="50%" align="center"><b><font color="#000000" size="4">Use the incremented state</font></b></td>       
</tr>       
</table>       
      
<p align="left"><font color="#000000" size="4">　</font></p>



<table border="1" width="74%" bordercolordark="#CC9966" bordercolorlight="#FFCC66">
  <tr>
    <td width="100%" colspan="3" align="center"><b><font color="#000000" size="4">Dispatch ROM 1</font></b></td>          
</tr>          
<tr>          
  <td width="33%" align="center"><b><font color="#000000" size="4">OP</font></b></td>     
<td width="33%" align="center"><b><font color="#000000" size="4">Opcode name</font></b></td>       
<td width="34%" align="center"><b><font color="#000000" size="4">Value</font></b></td>     
</tr>     
<tr>     
  <td width="33%" align="center"><b><font color="#000000" size="4">000000</font></b></td>     
<td width="33%" align="center"><b><font color="#000000" size="4">R-format</font></b></td>     
<td width="34%" align="center"><b><font color="#000000" size="4">0110</font></b></td>     
</tr>     
<tr>     
  <td width="33%" align="center"><b><font color="#000000" size="4">000010</font></b></td>     
<td width="33%" align="center"><b><font color="#000000" size="4">jmp</font></b></td>     
<td width="34%" align="center"><b><font color="#000000" size="4">1001</font></b></td>     
</tr>     
<tr>     
  <td width="33%" align="center"><b><font color="#000000" size="4">000100</font></b></td>     
<td width="33%" align="center"><b><font color="#000000" size="4">beq</font></b></td>     
<td width="34%" align="center"><b><font color="#000000" size="4">1000</font></b></td>     
</tr>     
<tr>     
  <td width="33%" align="center"><b><font color="#000000" size="4">100011</font></b></td>     
<td width="33%" align="center"><b><font color="#000000" size="4">lw</font></b></td>     
<td width="34%" align="center"><b><font color="#000000" size="4">0010</font></b></td>     
</tr>     
<tr>     
  <td width="33%" align="center"><b><font color="#000000" size="4">101011</font></b></td>     
<td width="33%" align="center"><b><font color="#000000" size="4">sw</font></b></td>     
<td width="34%" align="center"><b><font color="#000000" size="4">0010</font></b></td>     
</tr>     
</table>     
     
<p><font color="#000000" size="4">　</font></p>



<table border="1" width="76%" bordercolordark="#CC9966" bordercolorlight="#FFCC66">
  <tr>
    <td width="100%" colspan="3" align="center"><b><font color="#000000" size="4">Dispatch ROM 2</font></b></td>          
</tr>          
<tr>          
  <td width="33%" align="center"><b><font color="#000000" size="4">Op</font></b></td>     
<td width="33%" align="center"><b><font color="#000000" size="4">Opcode name</font></b></td>       
<td width="34%" align="center"><b><font color="#000000" size="4">Value</font> </b></td>     
</tr>     
<tr>     
  <td width="33%" align="center"><b><font color="#000000" size="4">100011</font></b></td>     
<td width="33%" align="center"><b><font color="#000000" size="4">lw</font></b></td>     
<td width="34%" align="center"><b><font color="#000000" size="4">0011</font></b></td>     
</tr>     
<tr>     
  <td width="33%" align="center"><b><font color="#000000" size="4">101011</font></b></td>     
<td width="33%" align="center"><b><font color="#000000" size="4">sw</font></b></td>     
<td width="34%" align="center"><b><font color="#000000" size="4">0101</font></b></td>     
</tr>     
</table>     
     
     
     
</body>     
</html>
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