Sync troubles, i.e. rolling/flickering picture,curved sides, etc.., on your beloved arcade PCBs?

Now the “sync stabilizer”, copyright by ‘MARTINJONESTECHNOLOGY’, beats ’em all !

Today I assembled on a stripboard this little circuit and installed it in my supergun.It really fixed all my sync issues with my troublesome boards (mostly bootlegs) which I never been able to solve in other way (trying, for example, the LM1881 sync stripper/cleaner)

Circuit is simple to do (but very effective),it requires only few common components.Technically speaking, it doesn’t modify the sync signal frequency but only the horizontal pulses lenght bringing them back in the broadcast standards.

For bill of materials and other technical explanations, I refer you to the official page of the creator:

https://martin-jones.com/2014/09/16/that-syncing-feeling-classic-arcade-games-that-wont-stay-still/

I highly recommend you to give it a try, you won’t be disappointed.

P1pkin has released his NAOMI/NAOMI2 multi BIOS for everyone.

By changing the dipswitches you can change the region of your system
DSW2 DSW3
OFF OFF Japan
ON OFF USA
OFF ON Export
ON ON Korea

Original thread can be found here

Download Here

Thanks very much to P1pkin for this.

Today we passed a milestone. Over 700 entires are now in the archive.
There are most likely more dumps than entries as some unknown ones are in ZIP files as a set.

Thank you everyone who has contributed over the past 3.5 years that this project has been running.
Please keep submitting them if you have them.