In this in-depth video by Amiga Retro, the Commodore 64 finally receives true HDMI output thanks to the HD64 mod by SPL. After repairing a previously damaged system, the creator installs a modern video upgrade that brings crystal-clear visuals and digital audio to the classic machine.
The result? A single HDMI cable delivers both audio and video—clean, convenient, and compatible with today’s tech.
Step-by-Step: From Analog to Digital
First, the host replaces damaged components, including the RAM. He then tackles the most challenging part—removing the original RF modulator. This step involves intense desoldering and careful heat management to avoid damaging the board.
Next, the HD-64 daughterboard is installed. This card connects directly to the VIC-II socket using a riser, while a ribbon cable links it to the HDMI output board. Power is tapped from the cartridge port, and key jumpers are soldered to match the system’s specs.
Retrofusion Case and Keyboard Transformation
To complete the upgrade, the host fits everything into a stunning Retro Fusion case. He also installs a modern mechanical keyboard, backlit in red. The result looks fantastic and feels premium—far from the yellowing cases of the 1980s.
This rebuild also includes the Ultimate II+ cartridge, allowing instant access to thousands of games via USB. Together, these upgrades modernize the C64 while preserving its nostalgic charm.
Crisp HDMI Output in Action
After powering on, the results speak for themselves. Compared to S-video, the true HDMI output is sharper, brighter, and completely free of analog artifacts. Colors are accurate, scanlines are configurable, and audio is crystal clear—all from a single cable.
Firmware updates are simple via USB-C. Once installed, a built-in configuration tool runs directly on the Commodore 64. No PC is needed after flashing.
Final Thoughts
This video is a must-watch for C64 fans looking to modernize their systems. It’s equal parts tutorial, tech adventure, and retro celebration—with plenty of humor throughout.
