title: assembly Language 8086 How to make 64bit integer Calculator?
body: <p>I want to make a 64-bit integer calculator in 8086 assembly language which has these functionalities: addition, subtraction, division, multiply.</p>
  
  <p>It should provide a menu so that if we press <code>1</code> it adds, if we press <code>2</code>, it subtracts etc. and we can give a 64-bit input value.</p>
  
  <p>The problem is we can only use 16-bit registers/memory while programming, so the problem is how we can use 16-bit registers and give 64-bit input values in the console window. </p>
  
  <p>I am Using KIP.R.IRVINE assembly Link Libraries.</p>
  
  <p>We have to code it such a way that it use 16-bit registers/operands for each functionality like addition, subtraction, division and multiplication.
  16 + 16 + 16 + 16 = 64</p>
  
  <p>I am new to assembly language, if any one can help me to make only 1 functionality (+, - , /, x) of the calculator I could make the rest of it.</p>