16-bit CPU in Logisim

Custom educational 16-bit CPU design implemented in Logisim, including ALU, control flow, memory/I/O instructions, and a demo program.

Overview

• 16-bit data path
• 32-bit instruction format
• General-purpose registers R1–R6
• ALU operations, memory access, branching, and I/O instructions
• Demo program for testing functionality

Architecture

ALU

CPU

ALU Components

Machine Code

Game Demo

• Watch / download demo video

video.mp4

Project Files

• Detailed CPU documentation
• Program listing / machine code output
• Machine code spreadsheet
• ALU.circ – ALU circuit
• CPU.circ – CPU top-level circuit
• program.asm – assembly source

How to Use

1. Open CPU.circ in Logisim.
2. Load program data into ROM (from your assembled output).
3. Run simulation and observe register/memory/I/O behavior.