YouTube creator The 8-Bit Guy posted a new video showing a Commodore 128 driving five separate monitors simultaneously. Using a custom video splitter board documented on GitHub, the retro machine outputs a distinct video signal to each display, effectively turning a single‑board computer into a multi‑screen workstation, without altering its core ROM.

Each monitor receives a different quadrant of the original 320×200 VIC‑II output, requiring careful timing adjustments on the splitter’s FPGA to avoid frame tearing. The build costs under $150 in off‑the‑shelf components, making it accessible for hobbyists who want to explore vintage graphics pipelines beyond the traditional single‑screen setup. The FPGA code synchronizes the horizontal sync pulses across all outputs, ensuring uniform display refresh.

The video splitter repository includes schematics, firmware, and a Makefile for reproducing the hardware, and the creator invites viewers to purchase pre‑assembled units from a small vendor. By extending the Commodore 128’s video capability, the project demonstrates that even decades‑old architecture can be repurposed for modern multi‑display experiments. The design also serves as a template for extending other 8‑bit machines to multi‑screen configurations.