Assembly: Multiply with 2 (shl)
<p>Why does the result is space?(32) instead of ◘?(8)</p>

<pre><code>mov    dl, 4        ;dl=00000100=4
shl    dl, 1        ;dl=00001000=8
mov    ah, 2
int    21h
</code></pre>

<p>What changes should I make to see the expected result?</p>