Build Your Own Arcade Controls Forum

Main => Main Forum => Topic started by: pointdablame on October 11, 2003, 12:07:24 pm

Title: NeoGeo PCB JAMMA?
Post by: pointdablame on October 11, 2003, 12:07:24 pm
I'm really considering turning my second machine into a NeoGeo since I love pretty much every NeoGeo game ever, lol

My question is: Is the NeoGeo PCB a JAMMA standard board, or is it something entirely different? I searched the 'net a bit and some just say its the MVS system, one said it was JAMMA, etc etc. I figured you guys would have a definite answer. I'm almost positive that it IS, I just want to make sure.

I'm just wondering if I'm lucky enough to just buy a NeoGeo board and some carts and plug it into my JAMMA cab, or if it's going to be more complicated than that.
Title: Re:NeoGeo PCB JAMMA?
Post by: Cisco Kid on October 11, 2003, 03:03:44 pm
yes its JAMMA compatible

just plug it into your harness and you should be good to go  ;D
Title: Re:NeoGeo PCB JAMMA?
Post by: Sasquatch! on October 11, 2003, 03:07:16 pm
Quote from: Cisco Kid on October 11, 2003, 03:03:44 pm
yes its JAMMA compatible

just plug it into your harness and you should be good to go  ;D
Not true...they are somewhat different:
http://www.hardmvs.com/manuals/Jamma2NeoGeo4SlotPinout.pdf

Most of the big important pinouts are the same, but the overall harness pinouts are not exactly the same.
Title: Re:NeoGeo PCB JAMMA?
Post by: question_answer on October 11, 2003, 06:51:17 pm
All the one slot motherboards are full JAMMA standard.

Two, Four and Six slot mobos are MVS (Multi Video System) standard pinout.

The soundchip on the multi slot boards can be damaged over time when used with a JAMMA harness.
Title: Re:NeoGeo PCB JAMMA?
Post by: Cisco Kid on October 11, 2003, 07:21:17 pm
... and just how exactly would the harness damage the sound chip?
Title: Re:NeoGeo PCB JAMMA?
Post by: question_answer on October 12, 2003, 02:26:07 pm
MVS pinout is stereo and the JAMMA harness is mono, the soundchip gets damaged because of the incorrect wiring - some pins need switching.
 
The guys in Tech Support over at Neo-Geo.com/forums (http://Neo-Geo.com/forums) will be able to give the complete reasons, but be assured the sound will go bad.