title: How to calculate DS:[0040207A] manually?
body: <p><img src="https://i.stack.imgur.com/7Rhp8.jpg" alt="alt text"></p>
  
  <p><img src="https://i.stack.imgur.com/NxfFA.jpg" alt="alt text"></p>
  
  <p>How to get the result <code>77D507EA</code> manually from <code>DS:[0040207A]</code> according to register info above?
  <strong>UPDATE</strong></p>
  
  <p><img src="https://i.stack.imgur.com/8mwis.jpg" alt="memory map"></p>