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You may have seen this CPU module with a PAL in games like Wonderboy or Sega Ninja. As some of the Sega System 1 games were encrypted and bootleggers made CPUs to decrypt them. Unfortunately, two of the components used in these modules are hard to find now, and they are (quite) large. I...

Hi. I'm looking for DEAD Sega CPU modules below: FD1089A: $5-15 FD1089B: $5-15 MC8123: $5-15 Want to purchase a module whose battery is dead or no longer functioning.

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...

My bubble memory emulator project was completed successfully. It reads data from an onboard SPI flash and sends data to the controller in bubble memory protocol. Core modules consume ~450 LEs of an Altera Cyclone IV. I think this is quite light. Since the data structure of a bubble memory is at...

There was a request from people who has a dead Twin Cobra PCB within the Korean arcade community. Their common problem was a GXC-0x DSP that had been previously died. A custom numbered DSP is actually a TMS320C10, and its firmware can be executed externally by activating its microprocessor...

OK... I've got a Bubble System motherboard from France. I know why the Japanese raise the market price even though it's already a ridiculous price, but the Bubble System PCB itself is very common. Someday the price will go down. However I'm still looking for a non-working Bubble System PCB and...

Hello everyone. OK. I'm still looking for a Bubble System PCB, but I can't get a touch with anybody who to sell it. I'm still looking for something "out of order". Fortunately, my friend lend me a Bubble System PCB, so I need a bubble system cartridge. Dead or Alive, not tested, that's okay...

I'm currently looking for the Konami Bubble System PCB. As many people know, the bubble memory used in this PCB was prone to data corruption, so there aren't very many PCBs that currently work. (A bubble memory itself is quite stable, but engineers made a fault) Gradius in working condition -...

Hello everyone. Recently, a tool called Bubbless that emulates a bubble memory cartridge was released in Japan, but this was made for living PCBs, so this provides "only" a backup function. Therefore I'm planning to build an open bubble memory cartridge emulator that can revive all deads. (This...