In the latest episode from Future Retro Fusion, we dive into a jaw-dropping experiment with the RAD Doom firmware—a project that replaces the 6510 CPU in your Commodore 64 or 128 with the ARM-based RAD cartridge and runs DOOM natively. That’s right—no emulation, no tricks. The RAD becomes the CPU, turning your vintage machine into a front-end for a fully modern gaming experience.
The video covers everything from preparing the SD card to launching the firmware. Once installed, the RAD cartridge takes over, booting straight into a DOOM-like engine. The game runs directly on the ARM CPU inside the RAD, with your Commodore handling video output and user input. Controls are smooth, gameplay is fast, and it’s surprisingly immersive for something running on what’s essentially a glorified CPU swap.
This RAD Doom firmware test isn’t just a novelty—it’s a genuine leap forward in hybrid retro computing. With joystick support, live gameplay, and expansion potential, it opens the door for future ARM-powered applications on C64 hardware. Imagine streamed levels, RPG engines, or even advanced dev tools—all running through your trusty Commodore via RAD.
You can download the RAD Doom firmware now from its official GitHub repository:
👉 https://github.com/frntc/RAD-Doom
