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Maquina Virtual

Overview

This repository contains the implementation of a virtual machine (MaquinaVirtual) that simulates basic operations on memory using various opcodes. The virtual machine has a memory space of 65536 addresses and uses two registers: XP and IP.

Features

  • Memory manipulation with MOV operations.
  • Conditional and unconditional jumps with JMP operations.
  • Logical operations: NOT, AND, OR, XOR.
  • Arithmetic operations: ADD, SUB, MOD.
  • Support for loading binary files into memory.

Class: MaquinaVirtual

Attributes

  • memoria: A list representing the memory space, initialized to 65536 addresses.
  • xp: An integer representing the XP register, initialized to 1025.
  • ip: An integer representing the IP register, initialized to 100.

Methods

Memory Manipulation

  • Opcode_0xA0(direccion_memoria, valor): Moves a constant value to a specific memory address.
  • Opcode_0xA1(direccion_memoria_inicial): Moves the content of the IP register to a specific memory address.
  • Opcode_0xA2(direccion_memoria_inicial): Moves the content of a specific memory address to the IP register.
  • Opcode_0xA3(direccion_memoria_origen, direccion_memoria_destino): Moves values between memory addresses.
  • Opcode_0xA4(direccion_memoria): Moves the value from a memory address to the address contained in XP.
  • Opcode_0xA5(direccion_memoria): Moves the value from the address contained in XP to another memory address.
  • Opcode_0xA6(direccion_memoria): Moves the content of XP to a memory address.
  • Opcode_0xA7(direccion_memoria): Moves the content of a memory address to XP.

Jump Operations

  • Opcode_0xB0(direccion_memoria_destino, direccion_memoria_condicion): Conditional jump to a memory address if the content of another address is 0.
  • Opcode_0xB1(posicion_memoria): Unconditional jump to a memory address.

Logical Operations

  • Opcode_0xC0(posicion_memoria): Logical NOT on a memory address.
  • Opcode_0xC1(posicion_memoria, posicion_memoria_2): Logical AND between two memory addresses.
  • Opcode_0xC2(posicion_memoria, posicion_memoria_2): Logical OR between two memory addresses.
  • Opcode_0xC3(posicion_memoria, posicion_memoria_2): Logical XOR between two memory addresses.

Arithmetic Operations

  • Opcode_0xD0(posicion_memoria, posicion_memoria_2): Adds the content of two memory addresses.
  • Opcode_0xD1(posicion_memoria, posicion_memoria_2): Subtracts the content of two memory addresses.
  • Opcode_0xD2(posicion_memoria, posicion_memoria_2): Calculates the modulo of the content of two memory addresses.

Additional Methods

  • cargar_archivo(archivo): Loads a binary file into memory starting at address 100.
  • getPosicionMemoria(ip): Gets a 16-bit memory address from two consecutive memory positions.
  • ejecutar(): Executes the instructions in memory until a termination opcode is encountered.

Usage

To use the virtual machine, instantiate the MaquinaVirtual class and call the cargar_archivo method to load your binary file. Then call the ejecutar method to start the execution.

# Example usage
vm = MaquinaVirtual()
vm.cargar_archivo([0xA0, 0x00, 0x01, 0x05, 0xF1])
vm.ejecutar()