How to run system 256 in a Naomi cab?

Spike Spiegel · Dec 20, 2007

Okay, I've got a cab set up to run Naomi games... but I was hoping to put a system 256 in there instead. It has no real JAMMA or anything, but I was wondering how I could power this system on and so on anyhow? What to do, what to do? I know I can use the jamma harness thing with system 256.... for jamma.... do I have a way of plugging the things directly into the sysetm instead, by any chance? VGA and sound are good (there's an RCA part in the machine, and VGA is a no brainer. But what about the rest? Any idea?

taitai · Dec 20, 2007

unplug the VGA, USB, Sound andp ower from the naomi and plug them into the System 246.

Edit so it's more helpful: Any system256 kit should come with an adapter for JVS power.

Spike Spiegel · Dec 21, 2007

taitai said:
unplug the VGA, USB, Sound andp ower from the naomi and plug them into the System 246.

That's that? It's that easy? System 256 (not 46) has all the same plug ins?

taitai · Dec 21, 2007

Spike Spiegel said:
That's that? It's that easy? System 256 (not 46) has all the same plug ins?

Yup. Just checked the manuals for tekken4 and tekken 5.

Spike Spiegel · Dec 21, 2007

Nope, can't do it. I don't have a power cable that plugs into system 246. It's something different.

taitai · Dec 21, 2007

Spike Spiegel said:
Nope, can't do it. I don't have a power cable that plugs into system 246. It's something different.

It's weird, all of the 246/256 manuals state that there's an adapter for JVS power harnesses that should've been included w/ kit. =/

Spike Spiegel · Dec 21, 2007

taitai said:
It's weird, all of the 246/256 manuals state that there's an adapter for JVS power harnesses that should've been included w/ kit. =/

Ah, you're assuming my good man, that I bought the kit new? I didn't. Damn. I wonder how hard it would be to get such a thing? Not very, I'm sure.

billd420 · Dec 21, 2007

If your naomi cab is using a capcom I/O, you can make it plug-and-play with the correct power harness. Evertyhing else directly hooks up (USB plug takes the place of the namco input connector). I have mine hooked up that way, if I remember I'll snap a pic of the harness. I made my by hand, but they are available on yahoo jp.

-Bill

taitai · Dec 21, 2007

billd420 said:
If your naomi cab is using a capcom I/O, you can make it plug-and-play with the correct power harness. Evertyhing else directly hooks up (USB plug takes the place of the namco input connector). I have mine hooked up that way, if I remember I'll snap a pic of the harness. I made my by hand, but they are available on yahoo jp.

-Bill

You ever work out that PC driver for JVS I/O USB boards?

Spike Spiegel · Dec 21, 2007

What the hell do you call that adapter? I've been searching the internet to buy one, but can't figure out what the hell it's called. Anyone have one for sale?

RGP · Dec 22, 2007

If you can find a Capcom Fighting Jam 246 service book it has the adapter listed in there with a part number as you can run a 246 with a Capcom I/O as the conversion lead is the same.

Edit:

Try these 2 Japanese arcade sellers:

http://www.fujitacommunications.com

http://www.sophia-corp.jp

taitai · Dec 24, 2007

Bump for mister spike.

Any luck?

Spike Spiegel · Dec 24, 2007

No. I have no luck when I know not what I'm looking for. I've just about given up. Someone, can anyone find one of these damn things for sale on the net? I can't seem to find one.

Orochi P-E · Dec 24, 2007

in fact you just need the naomi power connector to hook up in your capcom converter and a connector to hook up on your 256 mobo right ?
I'll check with my 246 power harness and see if i can do something for you ^^

Spike Spiegel · Dec 24, 2007

It's just the cable that connects two power connections for naomi into one for system 246/256. I've got the cables coming from the pow supply. They do make this cable, I just can't find it (because I don't know what you call it).

Thanks for the help, guys.

Spike Spiegel · Dec 25, 2007

Can I just use the cables from one (Naomi's pow supply) and take my Jamma adapter that came with this and splice them together? I mean, take the cable leading from that adapter and make it myself, or does it have to go through some stupid transformer or something? Maybe someone could get me a close up picture of one of these things?

taitai · Dec 25, 2007

Spike Spiegel said:
Can I just use the cables from one (Naomi's pow supply) and take my Jamma adapter that came with this and splice them together? I mean, take the cable leading from that adapter and make it myself, or does it have to go through some stupid transformer or something? Maybe someone could get me a close up picture of one of these things?

No, that should work, but I don't know what the pin out is on the JVS harness.

Spike Spiegel · Dec 25, 2007

taitai said:
No, that should work, but I don't know what the pin out is on the JVS harness.

If anyone could get me a picture of the adapter, I should be able to take the rest from there.

billd420 · Dec 27, 2007

Yo Steve-

Here's the scan from Capcom Fighting Jam's Manual where it shows the harness and explains it (in jap):

http://www.big-bill.net/246/246.pdf

And here's the official harness:

I was never able to track down a Namco harness, so I made my own. It can be done by splicing the naomi power harness with the 246 power harness. Also, if you know an AMP terminal supplier, you can buy the terminals and crimp your own.

Enjoy,
Bill

Spike Spiegel · Dec 27, 2007

Thanks to the picture, operation POWER ON is a huge success. I can hear sound, see video... how do I hook up the damn joysticks to work? lol.

billd420 · Dec 27, 2007

Spike Spiegel said:
Thanks to the picture, operation POWER ON is a huge success. I can hear sound, see video... how do I hook up the damn joysticks to work? lol.

Run the USB cable from your Capcom I/O (or sega I/O) to the Namco 246/256's USB port that is right up front. Your JVS I/O (capcom or sega) will intemperate the joysticks' signals.

Let me know if you need a pic of my setup. It sounds like you're on the right track however, so best luck with it.

-B

Spike Spiegel · Dec 27, 2007

billd420 said:
Run the USB cable from your Capcom I/O (or sega I/O) to the Namco 246/256's USB port that is right up front. Your JVS I/O (capcom or sega) will intemperate the joysticks' signals.

Let me know if you need a pic of my setup. It sounds like you're on the right track however, so best luck with it.

-B

It will work without power running to it for the joystick?

billd420 · Dec 28, 2007

Spike Spiegel said:
It will work without power running to it for the joystick?

I'm not sure what you're asking here... joysticks dont' require voltage. Everything should be plug and play in your existing naomi configuration. Its a matter of switching like 4 connectors from naomi to 246.

taitai · Dec 28, 2007

billd420 said:
I'm not sure what you're asking here... joysticks dont' require voltage. Everything should be plug and play in your existing naomi configuration. Its a matter of switching like 4 connectors from naomi to 246.

The USB cable carries +5v at .5amp with it. So yes, the I/O *board* needs power, but it's being supplied by the USB cable.

(or should be, if it's real USB)

billd420 · Dec 28, 2007

taitai said:
The USB cable carries +5v at .5amp with it. So yes, the I/O *board* needs power, but it's being supplied by the USB cable.

(or should be, if it's real USB)

The I/O board draws 5v from the jamma harness, not the USB cable from the 246.

How to run system 256 in a Naomi cab?

Onigami Isle Castaway

Genbu's Turtle Keeper

Onigami Isle Castaway

Genbu's Turtle Keeper

Onigami Isle Castaway

Genbu's Turtle Keeper

Onigami Isle Castaway

Genbu's Turtle Keeper

Genbu's Turtle Keeper

Onigami Isle Castaway

Tesse's Maintainence Man

Genbu's Turtle Keeper

Onigami Isle Castaway

n00b

Onigami Isle Castaway

Onigami Isle Castaway

Genbu's Turtle Keeper

Onigami Isle Castaway

Genbu's Turtle Keeper

Onigami Isle Castaway

Genbu's Turtle Keeper

Onigami Isle Castaway

Genbu's Turtle Keeper

Genbu's Turtle Keeper

Genbu's Turtle Keeper