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Author Topic: Jamma default buttons  (Read 1637 times)

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Hawk Daddy

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Jamma default buttons
« on: May 08, 2007, 12:25:29 am »
so whats the defulat buttons for a jamma harness?  Is it 2, 4, 6 player buttons, I know it has a 1 player joystick, but not sure about the buttons.

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BobA

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Re: Jamma default buttons
« Reply #1 on: May 08, 2007, 12:57:59 am »
Standard is 2 joys 3 buttons per player.  More buttons require a kick harness.

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Re: Jamma default buttons
« Reply #2 on: May 08, 2007, 03:14:40 am »
Whats a kick harness?

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Grinch

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Re: Jamma default buttons
« Reply #3 on: May 08, 2007, 05:15:22 am »
It's just an extra wiring loom that has the connectors on it for the extra buttons. Also known as Jamma+ (And these looms are not standardized, pinouts can vary between PCB's).

I thought Jamma supports 1 joystick and upto 4 buttons per player.
« Last Edit: May 08, 2007, 05:21:37 am by Grinch »
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Re: Jamma default buttons
« Reply #4 on: May 08, 2007, 07:52:12 am »
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Re: Jamma default buttons
« Reply #5 on: May 08, 2007, 09:19:20 am »
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shardian

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Re: Jamma default buttons
« Reply #6 on: May 08, 2007, 09:21:28 am »
And before you ask, a J-pac has additional screw terminals for buttons 4-8.  ;D
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Grinch

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Re: Jamma default buttons
« Reply #7 on: May 08, 2007, 05:01:58 pm »
The 4th button pinouts are there to be used tho on the wiring loom.

http://www.coin.demon.co.uk/jamma.htm
« Last Edit: May 08, 2007, 05:24:50 pm by Grinch »
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BobA

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Re: Jamma default buttons
« Reply #8 on: May 08, 2007, 06:22:01 pm »
Button 4 can be on the jamma connector but in the most commonly used pin out P1/2 button 4 are labeled as not used and the kick harness is used.  An example of this is MK I which uses buttons 123 on the jamma but 4 and 5 are on the kick harness.   
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Re: Jamma default buttons
« Reply #9 on: May 08, 2007, 06:26:26 pm »
Yeah, what BobA said (both times!) ... Button 4 is simply not part of the JAMMA standard, although some games do use the unused pins on the connector for Button 4. If you are looking at a "JAMMA game" with more than 2 players or 3 buttons, you need to look at the pinouts.

Cheers.



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Grinch

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Re: Jamma default buttons
« Reply #10 on: May 09, 2007, 02:22:40 am »
Quote from: BobA on May 08, 2007, 06:22:01 pm
Button 4 can be on the jamma connector but in the most commonly used pin out P1/2 button 4 are labeled as not used and the kick harness is used.  An example of this is MK I which uses buttons 123 on the jamma but 4 and 5 are on the kick harness.   

Ahh cool, my cab didn't come with a PCB all I knew it was wired for 4 buttons via the Jamma connector.

 :notworthy:

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