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<title>AAS—ASCII Adjust AL After Subtraction </title></head>
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<h1>AAS—ASCII Adjust AL After Subtraction</h1>
<table>
<tr>
<th>Opcode</th>
<th>Instruction</th>
<th>Op/En</th>
<th>64-bit Mode</th>
<th>Compat/Leg Mode</th>
<th>Description</th></tr>
<tr>
<td>3F</td>
<td>AAS</td>
<td>NP</td>
<td>Invalid</td>
<td>Valid</td>
<td>ASCII adjust AL after subtraction.</td></tr></table>
<h3>Instructio