Just received another set of JAMMA adapter boards!
Some of these are enhanced versions of existing adapters that I designed a while back, and some are new.
The important one here is the Nintendo adapter. This one is a brand new design that I’ve been working on for a couple of weeks. It includes a high speed, low cost video inverter and audio amp. This adapter has video selection jumpers for normal or inverted video selection and a jumper for audio amplification, which means that it can be used with both the Nintendo and the bootleg versions of games like DK and DK Jr. Bootleg versions typically output non-inverted video and have their own sound amplification.
Included in the batch are also the new Namco Pacman and Galaxian adapters which used to be a single adapter before. I split these apart, and the reason for that, was to support bootleg video and audio configurations. I tested both and they seem to work perfectly with my boards. There is also a new Namco Galaga adapter in the batch, and an improved version of the Irem adapter.
Finally I got a new set of 44 pin and 36 pin universal adapters. These exist to simplify the assembly procedure for games with a lower pin count.
Maybe one or two more batches, and I’ll have a fairly complete set of Jamma adapters and will probably be done with these for a while. The next set on the to do list are a Falcon set (I have many versions of Make Trax and bootleg Ms. Pacs), a Nintendo VS adapter and possibly a Playchoice 10 if I can locate one cheap.
I will be soon be listing these on eBay, and as always, it will be for a very, very good price, so stay tuned for that.
More info on each adapter will be available shortly in the project section.