My two-year project is coming to an end. It is a multi loader for Konami's bubble game that can emulate eight ROM images. Bubble memory's protocol itself is easy, but the production was delayed because I was programming diagnostics for the board. The resources are open, but it needs to be cleaned up. I'm still working on it.
I've made this item for me and my friend, so I don't have any plan to receive an order. However, there is a possibility of selling it if there's a little number of remainders after making a small batch.
I'm trying to contribute to MiSTer FPGA by developing a bubble PCB core for MiSTer. I've completed its video board. Now I'm focusing on drawing its schematics and implementing its bubble memory controller. The bubble controller is a YAMAHA gate array manufactured under 1.5um process and was used as a sequencer instead of MC6801 MCU which was originally used by Fujitsu. We can't use a firmware file because it's a gate array, not just an MCU. Nevertheless, I think I'll be able to provide some information for improving the emulation of MAME.
Thank you for reading this post.
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