title: 32-bit multiplication in 8086 without using MUL
body: <p>start:</p>
  
  <pre><code>MOV AX,0012h
  MOV BX,0000h
  MOV CX,0033h
  MOV DX,0000h
  
  MOV [100h],AX
  MOV [102h],BX
  MOV [104h],CX
  MOV [106h],DX
  MOV SI,40h
  
  tekrar:
  
  MOV DI,AX  ;sonucu indeks kaydeder
  AND DI,01h
  XOR DI,01h
  JZ topla_kaydir
  
  devam:
  
  RCR DX,1
  RCR CX,1
  RCR BX,1
  RCR AX,1
  
  SHR [100h],1
  SHR [102h],1 
  DEC SI
  CMP SI,0
  JNZ tekrar
  JMP son
  
  topla_kaydir:
  
  ADD DX,[104h]
  ADC CX,[104h]
  
  JMP devam     
  </code></pre>
  
  <p>This is part of my code. I want to multiply two 32-bit numbers without using <code>mul</code> operation and extended registers. I can't get the correct result.</p>