d (r, w)</td>
<td>NA</td>
<td>NA</td>
<td>NA</td></tr></table>
<h2 id="description">Description<a class="anchor" href="#description">
			¶
		</a></h2>
<p>Subtracts 1 from the destination operand, while preserving the state of the CF flag. The destination operand can be a register or a memory location. This instruction allows a loop counter to be updated without disturbing the CF flag. (To perform a decrement operation that updates the CF flag, use a SUB instruction with an immediate operand of 1.)</p>
<p>T