Assembly-Language-Project

An assembly program that converts two-digit octal input to decimal and displays it only if it's a multiple of 3 or 5.

Description:

In this project I wrote an assembly language program that converts a two digit octal number into its decimal equivalent. The program will then display the results only if the decimal number is a multiple of 3 or 5. Otherwise, it outputs 0. This was completed as part of my Computer Organization project.

Author:

Cristiana Eagen

Built with:

• Custom Assembly Language
• Assembler.jar simulator

Details:

• ASCII-to-decimal conversion
• Octal-to-decimal logic
• Division using subtraction loops
• Conditional branching using: SZA - Skip if AC is zero, SNA – Skip if AC is negative, SPA – Skip if AC is positive
• Used BSA to call these two subroutines: CHECKFIVE and CHECKTHREE

How to run the code:

• Download and open Assembler.jar
• Clone the repository
• Navigate into the src folder → cd src
• Load Assembly_language_program.txt in the Source Program panel.
• Compile the code: Tools → Compile.
• Enter an octal number in the Input Stream.
• Run the program via Tools → Execute → Run and take a look at the output.

Example:

• Input: 43 (octal)
• Decimal: 35 → Output: 35
• Input: 10 (octal)
• Decimal: 8 → Not a multiple → Output: 0