title: weird characters displayed during serial communication OSX
body: <p>I have tried communicating via serial (OSX w/ prolific drivers -> USB RS232 adapter -> Tx,Rx and GND pins on device serial ttl port) to a device and done so <strong>successfully</strong> using </p>
  
  <pre><code>screen /dev/tty.usbserial 115200 8N1
  </code></pre>
  
  <p>I get to log in and use it as if I was SSH or TelNetted in...</p>
  
  <p>However whenever I try to go into system recovery mode (holding CTRL+1) while the device is powering on, it starts displaying weird characters and until I close the screen session it will continue showing weird characters:</p>
  
  <p><img src="https://i.stack.imgur.com/UNAUu.jpg" alt="enter image description here"></p>
  
  <p>Of course when we tried doing the same thing on my boss' macbook running windows and PuTTY and everything worked fine, even in system recovery mode; characters were displayed properly. </p>
  
  <p>What gives? Id like to learn the intuition to use because up till now I concluded that since I can bot into the system and see characters normally <em>everything</em> about the connection should be fine and its must have been the recovery partition that was broken. This was wrong of course...</p>
  
  <p>Niko</p>