Jamma Boards

Dave · Post by **Dave** » Thu Mar 10, 2005 6:31 pm

Does anyone know how to mod a JAMMA board to have composite (or any other kind of standard video out), audio, and controls. I don't know much about this stuff but i just saw a deal i can't refuse.

HK-47 · Post by **HK-47** » Thu Mar 10, 2005 6:34 pm

Standard jamma pinout: http://www.larwe.com/coinop/jamma.html

HK-47 · Post by **HK-47** » Thu Mar 10, 2005 6:37 pm

Also, check this out:

MR.MOD wrote:I got RGB to work on the screen.
http://img.photobucket.com/albums/v454/ ... C-128F.jpg
http://img.photobucket.com/albums/v454/ ... C-127F.jpg
http://img.photobucket.com/albums/v454/ ... C-129F.jpg
http://img.photobucket.com/albums/v454/ ... C-131F.jpg

I had to use a capacitor on the sync line to get a stable picture. You may or may not need one.

So jamma stuff can be done, you just have to wire stuff right.

Dave · Post by **Dave** » Thu Mar 10, 2005 6:39 pm

YEEEESSSSS!!!!!!!!

I'll finally be able to have my own Ninja Gaiden Cabinet!!!!

Dave · Post by **Dave** » Thu Mar 10, 2005 7:37 pm

What's a Jamma game header? And do i need it?

Post by **gannon** » Thu Mar 10, 2005 7:38 pm

It's the connector that the jamma boards plug into.

Dave · Post by **Dave** » Sat Mar 12, 2005 1:23 am

so that means if i was going to hook it up to a jamma arcade amchine i'd have to connect it by hand. But since im just converting it for regular tv use it doesnt matter. Right

G-force · Post by **G-force** » Sat Mar 12, 2005 7:59 am

Dave wrote:YEEEESSSSS!!!!!!!! I'll finally be able to have my own Ninja Gaiden Cabinet!!!!

AWESOME!!! I gotta see it when you're done!

That would be so damn cool! Ninja Gaiden is close to my favorite game ever.

Post by **gannon** » Sat Mar 12, 2005 10:13 am

umm... I guess you could just solder everything to the JAMMA board itself, but then you'd only be able to use 1 game really. Also, if you're planning on using this with a tv I'd suggest either you start building a chroma encoder now, or buy a shotgun.

SgtBowhack · Post by **SgtBowhack** » Sat Mar 12, 2005 6:09 pm

There are cheap ways to get composite from a JAMMA board.
1) If you live in a country that uses PAL, those PAL converters for video game systems will also work with your JAMMA board. They take in RGB and output PAL composite.
2) Take a Genesis/Megadrive from your region, and crack that bad boy open and wire up the RGB to the RGB from the Genesis. It might be good to get rid of components that might interfere (but if you just turn on the Genesis with the video lines cut, that should work too).

Either of these solutions are, in fact, the same thing. There are ways to make the PAL converters output NTSC too, but when I tried the best I got was a PAL signal again (thought I broke it) so, I gave up. Then again, at the time my soldering skills were lacking, so you might have better luck.

In any case, video encoders are abundant and cheap

Good luck!

xxxeagle · Post by **xxxeagle** » Sat Mar 12, 2005 10:08 pm

Thats cool I wanted to build a mame but could not get a cabinet localy and dont feel like building one. Also how big is the tv?

Dave · Post by **Dave** » Sun Mar 13, 2005 1:27 am

Sorry to dissapoint you guys but I think the auction was sniped away from me