Exercise 51: A Tiny Virtual Machine – Part 4: I/O and Debugging

Goals:

• Implement basic I/O support.
• Add debugging tools (memory dump, register display).

Topics Covered:

• Memory-mapped I/O:
  • Write to 0xFF00 triggers console output.
• Debug commands:
  • Print VM state before halting.
  • Optionally, step-by-step execution.

Bonus: Implement IN and OUT instructions for basic I/O interactivity.