title: test if hexadecimal number is in range of 16 bits register
body: <pre><code>addInt:
          clc
          mov ax, cx
          add ax, bx
              JNC convert
  </code></pre>
  
  <p>how would i be able to test if the sum is in range of  16 bits, since if I add using 16 bits register the result does not show the carry over value even if the sum is greater than 16 bits,  OF will not work either since it will never become overflow due to the use of 16 bits registers. How should i continue this code to make it jump to convert loop. for example if I have <code>FFFF + FFFE</code>, the sum will be <code>1FFFD</code>, but the eax register will only show <code>FFFD</code>, without the carry over 1
  thank in advance for helping</p>