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Building the ultimate Colecovision clone

A project log for DIY ColecoVision

My goal was to create an enhanced drop-in replacement for the ColecoVision that you can build at home using available components.

oliver-scholzOliver Scholz 02/06/2025 at 10:380 Comments

Okay, so I can write a log. Let me do that. I got 5 sample boards in December 2024, parts arrived late December, and now (Feb 25) I'm starting to populate the board and document my progress. Hopefully there will be no issues, but we'll see.

I'm already incorporating minor layout changes, moving components slightly to make them more accessible, etc.

The power supply and clocks are populated and working. I'll build the clock multiplier to test the circuitry on this board, but normally I'd just populate the 10.7 MHz crystal because that's simpler. Those using the Pico won't need to bother with VDP clock generation or TMSRGB at all.

Again waiting for parts to complete the -5V converter and the next big step will be making an initial version of the two Memory and IO GALs to get basic CV mode running.

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