Home » Embedded Systems

Multiplication of two 8 bits numbers using logical instructions

Here, we are going to learn how to find multiplication of two 8 bits numbers using logical instructions on 8085 microprocessor?
Submitted by Akash Kumar, on November 03, 2018

Problem statement:

To perform multiplication operation between two 8 bits numbers using logical instructions on 8085 microprocessor.

Algorithm:

1. Load first number in accumulator.
2. Move the content of accumulator in register B.
3. Load the second number in accumulator.
4. Rotate the accumulator left without carry.
5. Repeat step 4.
6. Store the result in memory.
7. HLT.

Program:

	LDA     2050
	MOV     B, A
	LDA     2051
	RLC
	RLC
	STA     3050
	HLT

Observation:

    INPUT: 
    2050:05
    2051:04

    OUTPUT: 
    3050:14

Hence we successfully multiplied two 8 bits numbers using logical instruction.