What are those boards and ROMs? Those look kind of interesting.
I didn't make those homebrew pcbs. They came included when I bought the computers. I tested them and they work. Just swap the eproms with any that's labeled YRM-xxx. Kinda nice to have because the original carts are hard to find and really expensive. The unlabeled eproms are just included as extras, I've no clue what they're for.
Also added another picture. Forgot to show the manual book.
I found out there's a good chance my car needs a new timing belt. I haven't gotten an estimate yet, but I know it'll cost me a fortune to fix. So I'm selling my japanese Xbox360, Dreamcast console, and DC Twin Stick. Pictures and prices will be up soon once I figure it all out.