This arcade pcb was a street fighter 2 turbo arcade board I bought for 45$ shipped years ago. It's an official capcom pcb and came fully working. I did some mucking around with cps1 roms in emulators and my eprom burner and found a way to convert my pcb into rainbow set 3. More details about this project can be found on my forum. Here's a video of it in action on my supergun.
http://www.youtube.com/watch?v=AcuYA6AKA-4&list=UU9G7zkSqL0nMI5eNk0uN65A&index=1&feature=plcp