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 Post subject: JAMMA > 240p?
PostPosted: Wed Sep 11, 2019 2:37 pm 



Joined: 13 Aug 2018
Posts: 237
Is there much JAMMA hardware out there in resolutions greater than 240p? I just found out that Atomiswave is 640x480 which got me wondering.


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 Post subject: Re: JAMMA > 240p?
PostPosted: Wed Sep 11, 2019 3:27 pm 


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Joined: 06 Mar 2006
Posts: 11834
Location: Germany
In general it covers a multitude of 15khz resolutions. This includes 240p, but can stretch the timing to 255p (Irem Boards) with a lower refresh rate than usual instead. 480i is included as well of course.


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 Post subject: Re: JAMMA > 240p?
PostPosted: Wed Sep 11, 2019 3:31 pm 



Joined: 13 Aug 2018
Posts: 237
I see. What else is out there at 480i?


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 Post subject: Re: JAMMA > 240p?
PostPosted: Wed Sep 11, 2019 6:13 pm 


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Joined: 06 Mar 2006
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Location: Germany
Sega had a JVS to Jamma kit available, which was used to run Naomi on Jamma cabs (in 480i).

480i certainly wasn't standard for arcade games, but early PCBs date back to stuff like Popeye by Nintendo.

Some of the Namco System 12 titles (Tekken 3, TTT, Rival Schools) was running in 480i as well.


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 Post subject: Re: JAMMA > 240p?
PostPosted: Wed Sep 11, 2019 10:26 pm 



Joined: 11 Sep 2014
Posts: 795
There were a number of 384p jamma boards too. Not the large dedicated stuff like Model 2. The older sprite based ega boards like Narc and Paper Boy.

A lot of 480p arcade boards also had 480i options so they could be used on regular cabs or for their deluxe cab versions with 480i only crt rear projection tv's. Namco 246 games like Time Crisis 3 and Sega Naomi titles likes Capcom VS SNK 2 all had 480i options.

I have seen "Jamma adapters" too, to use non-jamma games on regular jamma cabs. This was common.

There is nothing specifically about the jamma standard that prevents the use of higher resolutions. It's just that a jamma edge is usually wired for RGBS and 480p stuff usually outputs RGBHV.

Some later titles offered both a jamma edge and a standard DB15 port output. E.g. America's Army.

There was / is any number of HD multi-game PCBs with standard Jamma edges outputting 480p (or higher) but these are usually just mame PCs on a PCB.


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 Post subject: Re: JAMMA > 240p?
PostPosted: Wed Sep 11, 2019 10:30 pm 



Joined: 17 Oct 2015
Posts: 39
Dance Dance Revolution, Guitar Freaks, and DrumMania games run on PS1-based System 573 (everything up through DDR Extreme: 8th Mix, GF 11th Mix, and DM 10th Mix). At least the DDR games run menus in 480i and gameplay in 240p.


Last edited by PinoBatch on Wed Sep 11, 2019 10:34 pm, edited 2 times in total.

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 Post subject: Re: JAMMA > 240p?
PostPosted: Wed Sep 11, 2019 10:31 pm 



Joined: 13 Aug 2018
Posts: 237
G-Net is 240p right?


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 Post subject: Re: JAMMA > 240p?
PostPosted: Thu Sep 12, 2019 12:08 am 



Joined: 11 Sep 2014
Posts: 795
PinoBatch wrote:
Dance Dance Revolution, Guitar Freaks, and DrumMania games run on PS1-based System 573 (everything up through DDR Extreme: 8th Mix, GF 11th Mix, and DM 10th Mix). At least the DDR games run menus in 480i and gameplay in 240p.



Is Dance Dance Revolution a jamma board? I always assumed it was a dedicated cab.


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 Post subject: Re: JAMMA > 240p?
PostPosted: Thu Sep 12, 2019 12:27 am 



Joined: 19 Oct 2013
Posts: 544
Location: Riverside, CA
Classicgamer wrote:
PinoBatch wrote:
Dance Dance Revolution, Guitar Freaks, and DrumMania games run on PS1-based System 573 (everything up through DDR Extreme: 8th Mix, GF 11th Mix, and DM 10th Mix). At least the DDR games run menus in 480i and gameplay in 240p.



Is Dance Dance Revolution a jamma board? I always assumed it was a dedicated cab.


JAMMA is a wiring standard. It doesn't mean that a game is or is not in a dedicated cabinet.

https://en.wikipedia.org/wiki/Japan_Amu ... ssociation


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 Post subject: Re: JAMMA > 240p?
PostPosted: Thu Sep 12, 2019 12:40 am 



Joined: 23 Mar 2011
Posts: 618
Gradius IV is both JAMMA and JVS. It does 24khz or 15khz through either. 24khz is really the only way to play though.

Sega System 24 is 24khz only and uses a standard edge connector design, though it uses Sys16 pinout and is therefore not JAMMA.


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 Post subject: Re: JAMMA > 240p?
PostPosted: Fri Sep 13, 2019 7:23 pm 



Joined: 11 Sep 2014
Posts: 795
DejahThoris wrote:
Classicgamer wrote:
PinoBatch wrote:
Dance Dance Revolution, Guitar Freaks, and DrumMania games run on PS1-based System 573 (everything up through DDR Extreme: 8th Mix, GF 11th Mix, and DM 10th Mix). At least the DDR games run menus in 480i and gameplay in 240p.



Is Dance Dance Revolution a jamma board? I always assumed it was a dedicated cab.


JAMMA is a wiring standard. It doesn't mean that a game is or is not in a dedicated cabinet.

https://en.wikipedia.org/wiki/Japan_Amu ... ssociation



I know what jamma is but not all PCBs use the jamma wiring standard. The point of Jamma was for arcade owners to be able to use one cab for multiple games so they didn't have to go to the trouble of replacing the whole cab every time. They just switched the PCB.

You can take a Jamma PCB and connect it to the Jamma harness in any Jamma cab. A lot of dedicated cabs did not use a jamma edge though. They used custom controls wired directly to the PCB via custom I/O boards. Sega's Model 2 racing games, for example were dedicated cabs - as in cabs made for that one game. You can't connect a Daytona USA pcb to an old generic Street Fighter 2 cab. Jamma doesn't support analog controls.

Sellers of arcade boards often break them down into Jamma (any PCB with a jamma edge) and "non-jamma". Non-jamma includes older games (which can often connect to jamma via an adapter) and dedicated games with custom controls which often can't.

Anyway, this thread specifically asked about jamma pcbs and Dance Dance Revolution looks like it could be a dedicated non-jamma cab.


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 Post subject: Re: JAMMA > 240p?
PostPosted: Fri Sep 13, 2019 8:23 pm 



Joined: 19 Jul 2017
Posts: 1425
Classicgamer wrote:
Anyway, this thread specifically asked about jamma pcbs and Dance Dance Revolution looks like it could be a dedicated non-jamma cab.

System 573 hardware, which runs DDR, Martial Beat, and a few others, is definitely JAMMA.


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 Post subject: Re: JAMMA > 240p?
PostPosted: Fri Sep 13, 2019 8:43 pm 



Joined: 19 Oct 2013
Posts: 544
Location: Riverside, CA
nmalinoski wrote:
Classicgamer wrote:
Anyway, this thread specifically asked about jamma pcbs and Dance Dance Revolution looks like it could be a dedicated non-jamma cab.

System 573 hardware, which runs DDR, Martial Beat, and a few others, is definitely JAMMA.


Along with tons of other "dedicated cabinet" hardware.

Again, there's no correlation between a cabinet being dedicated or having strange controls and being JAMMA or not.


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