83 Open Source Commodore Software Projects

The source from my Commodore 64 assembly programming tutorial for Windows

VirtualC64 is a cycle-accurate C64 emulator for macOS

Project for capturing vintage, classic, aka old computer schematics in KiCad.

Open Hardware Remake of the Commodore Amiga 500+ Mainboard

tapuino

Chipdisk Nacional Vol.1

A harness for the Diagnostic Rev. 586220 Test for the Commodore C64

spritemate is a browser based sprite editor for the Commodore 64

Emulations (running on Linux/Unix/Windows/macOS, utilizing SDL2) of some - mainly - 8 bit machines, including the Commodore LCD, Commodore 65, and the MEGA65 as well.

editor for the Commodore 64

Original sources and binaries for Supermon+64 V1.2 by Jim Butterfield

Open Hardware 8Kb Cartridge for the Commodore 64

Remake of the space shooter game Retaliate for the Commodore 64

A Commodore (CBM) BASIC V2 interpreter/compiler written in Java

Open Hardware 1 MB Chip RAM Expansion for the Commodore Amiga 600 Computer

Protect your Commodore 64 from killer power supplies!

4/8 MB Fast RAM Expansion for the Commodore Amiga 500

cc65 library for accessing the DOS and network functions of the Ultimate II+ cartridge and Ultimate 64 motherboard

A Nintendo (Nunchuk) Controller Adapter for Commodore 64.

Raspberry Pi extension board for the PI1541 project.

Playstation to Commodore Amiga/CD32 Controller Adapter

Open Hardware Kickstart Switcher for Amiga Computers

A Java framework for building highly customizable PETSCII-enabled BBS, accessible from Commodore 64/128

This is a replacement PSU (230VAC input) for the Commodore C64.

6502 Forth-83 dialect for the Commodore PET 2001

A NodeMCU (ESP8266) based WiFi modem for the C64's user port

Commodore 64 tips'n tricks

Open Hardware 16 KB Cartridge for the Commodore 64

Use a Raspberry Pi as fast mass storage solution for your Commodore 8-bit computer using just the datassette port.

Open Hardware 2364-27xxx (E)EPROM Adapter PCB

A few libs, including a lot of Commodore / CSG parts

An A/V-adaptor board for the C64

A HAT for the Raspberry Pi, that allows to emulate the Commodore C64 floppy disk drive 1541. Switches and IEC-Bus detachable.

Powerful macro (cross) assembler package for several CPUs

3D models and additional files for the project Commodore PET Mini

Portable chess game in C. Commodore 64, Apple 2, Atari, Oric, Commander X16, curses terminal, etc.

4 MB Fast RAM Expansion for the Commodore Amiga 600

Safely connect your Sega Mega Drive/Genesis controllers to your Commodore 64 or Amiga

Proof of concept c64 emulator presented at OnceUponASprite 19 in Milan 26/10/2019.

Control Amiga add-on boards through mouse buttons

Commodore VIC20: Software Sprite Stack library using modern 6502 assembler

Commodore 16 schematics and PCB, redrawn in Kicad

Multiplatform Commodore 64 and 264 family emulator written in C++ using SDL2.

Disassembly of the Commodore 16 game

Open Hardware RTC module for the Amiga 1200.

Code from 1980s type-in books for 8-bit machines

A PSU for the Commodore C64 and up to two 1541-II floppy disk drives

Open Hardware Fast Loader cartridge for the Commodore 64 and 128

I wanted an alternative to the SD2IEC on my Commodore 64, and I almost instantly took a liking to Pi1541 software. I did however need to design a board for it and this was the end result - even includes beepers, OLEDs and two IEC connectors

Open Hardware Multi-KERNAL Cartridge for the Commodore 64

Open Hardware Automatic Mouse/Joystick Switcher for Amiga Computers

Move your Amiga 2000 CPU to the Coprocessor slot!

🤓🕹💾 This hobby project contains software implementations of old microprocessors and complete computer systems. I'm very interested in retrocomputing and this is how I learn about the inner workings of these old, classic and amazing computers and game consoles.

GoDot C64 Image Processing

Open Hardware RGB to Composite/S-Video Converter

Print a picture from a modern PC with an old-fashioned Commodore MPS 803 compatible printer

A Commodore 64 Emulator in Pascal

zinc64 - Commodore 64 emulator toolkit with batteries included but swappable

This Kernal prevents the killer CBM80 signature, that some games leave in memory from hooking up the C64 for a while

This is a Kernal Adapter/Switch for the Commodore C64 long board

A curated list of software emulators and simulators of PCs, home computers, mainframes, consoles, robots and much more...

A Commodore IEC Serial Floppy Drive and WiFi Modem multi-device emulator

An 8MHz Z80 card for the Commodore C64, which allows to run CP/M or other Z80 software.

I wanted a Pi1541 module that did not feel like I was handling bare electronics, so I made one that hides most of the scary bits (no 3d-printer required).

Hardware design of Magic Desk and Ocean compatible cartridge for the Commodore 64

Replacement for the GateArray in the Commodore 1541

Adapter that allows external connection of floppy disk or Gotek drives

This is a Kernal Adapter/Switch for the Commodore C64, ASSY250469 (short board).

A fun language compiler for 8-bit systems (6502, 6510, Z80, Atari, Commodore, NES, ZX Spectrum, Atmos) with great optimization.

SD2IEC Pluggable

C64 emulator for the M5Stack

Collection of cartridges, adapters and replacements for the Commodore C64

Cart64out is a breakout board for the Commodore C64 Expansion Port

An Adaptor for the Character ROM of the Commodore C64

This is a Control Port Switch for the C64. It provides a rapid fire function

A wiki to keep track of homebrew and unofficial hardware for retro computers and old consoles

Commodore 64 VIC-II 6567/6569 Replacement Project

This a a Diagnostics Harness for the Commodore VIC-20.

Homebrew 8-bit Backplane Computer

Open Hardware Joystick Adapter for C-16, C-116 and Plus/4

Terminal 6502 Emulator with Commodore 64, Vic-20, PET 2001, and TED: C16, Plus/4

Awesome resources about Commodore world