Virtual Machine Interpreter

This Virtual Machine (VM) is a lightweight computing environment implemented in Python that follows the fundamental fetch-decode-execute cycle of computer architecture. The VM processes assembly-like instructions from a text source file (myVM_Prog.txt) and generates output in a separate file (myVM_Output.txt).

Features

Core Functionality

• Instruction Processing Pipeline:
  • Load Phase: Reads instructions sequentially from the input file
  • Decode Phase: Parses each instruction into operation and operands
  • Execute Phase: Performs the specified operation
  • Program Counter: Automatically increments after each operation (with exceptions for jump commands)

Supported Operations

Category	Commands
Arithmetic	ADD, SUB, MUL, DIV
Memory	STO (store), IN (user input)
Control Flow	JMP, BRn, BRp, BRz
I/O	OUT (output to file)

Memory Management

• Fixed-size memory (default 500 addressable locations)
• Symbol table for variable and label storage
• Automatic memory bounds checking

Getting Started

Prerequisites

• Python 3.x

Usage

1. Create your program in myVM_Prog.txt:

   STO X 5
   STO Y 10
   ADD Z X Y
   OUT Z
   HALT
   
   

2. Run/execute the file myVM.py

3. View the Results inside myVM_Output.txt

For more details or sample programs that can be run

view the Assignment-My Virtual Machine-Python-DESCRIPTION-Ver02.00.pdf