# 8086 program to multiply two 16-bit numbers

**Problem –** Write a program to multiply two 16-bit numbers where starting address is **2000** and the numbers are at **3000** and **3002** memory address and store result into **3004** and **3006** memory address.

**Example –**

**Algorithm –**

- First load the data into AX(accumulator) from memory 3000
- Load the data into BX register from memory 3002
- Multiply BX with Accumulator AX
- Move data from AX(accumulator) to memory
- Move data from DX to AX
- Move data from AX(accumulator) to memory
- Stop

**Program –**

Memory | Mnemonics | Operands | Comment |
---|---|---|---|

2000 | MOV | AX, [3000] | [AX] <- [3000] |

2004 | MOV | BX, [3002] | [BX] <- [3002] |

2008 | MUL | BX | [AX] <- [AX] * [BX] |

200A | MOV | [3004], AX | [3004] <- AX |

200E | MOV | AX, DX | [AX] <- [DX] |

2010 | MOV | [3006], AX | [3006] <- AX |

2014 | HLT | Stop |

**Explanation –**

**MOV**is used to load and store data.**MUL**is used to multiply two 16-bit numbers.**HLT**is used to stop the program.**AX**is an accumulator which is used to store the result.**BX, DX**are general purpose registers where BX is used for multiplication and DX is used for result.

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