Basic Arithmetic Operation

AND Logic

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expt1d.asmLast updated: Sep 20, 2026

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Output Terminal

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Basic Arithmetic Operation

Explanation

1. Purpose

This program demonstrates how to load hexadecimal values into CPU registers and perform a bitwise logical AND operation between them in 8085 assembly language.

2. Key Concepts

Immediate Loading (MVI): Storing a fixed byte of data directly into a register.
Bitwise AND (ANA): Comparing the Accumulator (Register A) with another register bit-by-bit; a bit in the result is set to 1 only if both corresponding bits are 1.
Accumulator-Centric Design: In 8085 assembly, ALU operations (like ANA) automatically use Register A as one input and store the final result back into Register A.

3. Code Walkthrough

MVI A, 0Fh – Loads hexadecimal value 0Fh (0000 1111 in binary) into Register A.
MVI B, 0F0h – Loads hexadecimal value 0F0h (1111 0000 in binary) into Register B.

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Basic Arithmetic Operation

Explanation

1. Purpose

This program demonstrates how to load hexadecimal values into CPU registers and perform a bitwise logical AND operation between them in 8085 assembly language.

2. Key Concepts

Immediate Loading (MVI): Storing a fixed byte of data directly into a register.
Bitwise AND (ANA): Comparing the Accumulator (Register A) with another register bit-by-bit; a bit in the result is set to 1 only if both corresponding bits are 1.
Accumulator-Centric Design: In 8085 assembly, ALU operations (like ANA) automatically use Register A as one input and store the final result back into Register A.

3. Code Walkthrough

MVI A, 0Fh – Loads hexadecimal value 0Fh (0000 1111 in binary) into Register A.
MVI B, 0F0h – Loads hexadecimal value 0F0h (1111 0000 in binary) into Register B.