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What are the "guts" of a complete cab?

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krick:


--- Quote from: Crazy Cooter on September 27, 2004, 09:07:12 pm ---The past 24 hours have been pretty revealing as far as my understanding of this stuff.  Most of it became clear by looking into the JAMMA standard.  Now I'm wondering if each game with JAMMA+ has it's own extension board.  I'm guessing not since DYNAGOD referred to the "kick harness" for fighters.  Would this auxillary board be the same for 2 JAMMA+ fighter cabs?  

edit:  I think I found my answer.  It appears that the auxillary board is particular to the manufacturer/time period.  ie: Street Fighter II has a "capcom CPS", Street Fighter III has a "capcom CPS III".  I assume these are not the same, but are they compatable?

--- End quote ---

I'm not sure what the "auxillary board" is that you are referring to.

Just to clarify...

JAMMA only supports 2 players with 3 buttons per player.

A kick harness is a blanket term used to refer to a wiring bundle that comes with a game board and is designed to handle the additional controls that are outside the JAMMA specification.  There is no aux board.

So a game that supports 4 players with 3 buttons each will have an extra wiring harness to handle the 2 extra joysticks and the 6 extra buttons.

And a game like Street Fighter 2 that supports 2 players with 6 buttons each will have an extra wiring harness to handle the 6 extra buttons. The 6 extra buttons just happen to be the "kick" buttons.  That is where the term "kick harness" comes from.  

These harnesses typically have a unique connector and/or pinout so they will only work with a specific PCB (or family of games like SF2).

Bob Roberts has some information on a way to make the kick harnesses somewhat universal so you can easily swap PCBs...
http://www.dameon.net/BBBB/plus.html

Crazy Cooter:

The kick harness is what I was refering to.  I had assumed it required another board that used some kind of shift function persay that enabled the game to use a standard JAMMA interface.  The JAMMA+ interface is semi-proprietary then?.  I'll read through Bob Roberts site to find out about his universal wiring technique.  Should be easy now that I know it's in the wiring/pinout rather than another pcb.

SirPoonga:


--- Quote from: Crazy Cooter on September 29, 2004, 10:25:49 am ---The JAMMA+ interface is semi-proprietary then?.

--- End quote ---

No, JAMMA+ is JAMMA with extras.  The extras is implemented however the game manufacturer decided to interface the extras.

To original poster, I suggest picking up the book.  www.projectarcade.com

krick:

What he said. :)

The JAMMA spec only pertains to the 56 pin JAMMA connector itself.

Any other controls that can't be accomodated by the 2 joystick w/ 3 buttons each limit are handled with a proprietary "kick harnesses".

People refer JAMMA games that require a kick harness as "JAMMA+" but there is no JAMMA+ standard.

Also, there are variations to the JAMMA "standard" to watch out for...

Some manufacturers used the "empty" pins 25/26 and c/d for 4th and 5th buttons for each player, and some used pins 11/M for non-standard sound.  Usually amplified or unamplified stereo output.

There are also systems that use the same connector with somewhat different pinouts:

Notable are Electrocoin:
http://www.coin.demon.co.uk/jamma.htm

and NeoGeo MVS:
http://www.hardmvs.com/manuals/Jamma2NeoGeo4SlotPinout.pdf

I'm sure there are others.




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