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8085 program to multiply two 8 bit numbers using logical instructions
In this program we will see how to multiply using logical operators.
Problem Statement
Write 8085 Assembly language program to multiply two 8-bit numbers using logical operators.
Discussion
We are assuming the first number is in register B, and second number is in register C, and the result must not have any carry.
Here we are multiplying with 04H. We can perform the multiplication by left rotate two times. Assign 06H into B, and 04H into C. Load B to A, then rotate the accumulator two times. Store the result into a specified memory.
Input
| Register | Data |
|---|---|
| B | 06 |
| C | 04 |
Flow Diagram
Program
| Address | HEX Codes | Labels | Mnemonics | Comments |
|---|---|---|---|---|
| F000 | 06, 06 | | MVI B,06H | |
| F002 | 0E, 04 | | MVI C,04H | |
| F004 | 78 | | MOV A,B | Load B to A |
| F005 | 07 | | RLC | Rotate left without carry |
| F006 | 07 | | RLC | Rotate left without carry |
| F007 | 32, 00, 80 | | STA 8000H | Store result into 8000H |
| F00A | 76 | | HLT | Terminate the program |
Output
| Address | Data |
|---|---|
| 8000 | 18 |
Updated on: 30-Jul-2019
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