   <td>Global active low asynchronous reset after synchronization.</td>
    </tr>
    <tr>
        <td>A</td>
        <td>input</td>
        <td align="center">DATA_WIDTH (default value is 8)</td>
        <td>ALU's first operand (it is connected to register_file[0]).</td>
    </tr>
    <tr>
        <td>B</td>
        <td>input</td>
        <td align="center">DATA_WIDTH (default value is 8)</td>
        <td>ALU's second operand (it is connected to register_file[1]).</td>
    </tr>
    <tr>
        <td>ALU_fu