h>
<th>Op/En</th>
<th>64-bit Mode</th>
<th>Compat/Leg Mode</th>
<th>Description</th></tr>
<tr>
<td>0F AB /r</td>
<td>BTS <em>r/m16, r16</em></td>
<td>MR</td>
<td>Valid</td>
<td>Valid</td>
<td>Store selected bit in CF flag and set.</td></tr>
<tr>
<td>0F AB /r</td>
<td>BTS <em>r/m32, r32</em></td>
<td>MR</td>
<td>Valid</td>
<td>Valid</td>
<td>Store selected bit in CF flag and set.</td></tr>
<tr>
<td>REX.W + 0F AB /r</td>
<td>BTS <em>r/m64, r64</em></td>
<td>MR</td>
<td>Valid</td>
<td>N.E.</td>
<td>Store selec