title: can "mov ds,ax " be used to transfer 8bit data?
body: <p>I am studying mp book by the author-GODSE.
  my question:</p>
  
  <p>A) can AX,BX,CX,DX 16bit registers be used as source for transfering "8bit "data?
  Ex: Mov [734AH],BX; copies "contents" of bx to ds.
  Here,contents mean what?</p>
  
  <ul>
  <li>either data or word </li>
  <li>only word?</li>
  </ul>
  
  <p>Ex2: Mov DS,BX; copies "word" from bx to ds.
  Why they have mentioned word itself? (If 1 byte data can also be transfered, they would have given "content" itself.). </p>