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Main => Main Forum => Topic started by: Venger on March 22, 2002, 08:47:36 am

Title: NeoGeo MVS to TV
Post by: Venger on March 22, 2002, 08:47:36 am

Does anyone know of a website where I can find a tutorial on how to build a cable to connect a NeoGeo MVS board to a TV via RCA jacks or Svideo? I know they sell "superguns" but I don't have $300 to spend on one of those. I heard you could build one yourself.  If you know something about this post a reply and help out a poor NeoGeo fan. :)

Title: Re: NeoGeo MVS to TV
Post by: Zipper on March 22, 2002, 09:17:52 am

Hi there,

I've not got any links to hand (Chad Gray had an excellent site, but it seems to have vanished), but you need the pin-out of the JAMMA fingerboard (the edge connector on the MVS board). And the pin-out of a SCART connector (to plug into your TV).

Search google or somesuch for : 'JAMMA pinout' and 'SCART pinout'.

The JAMMA connector takes inputs for the controls (I hacked a SNES joystick for this), the coin slots and the test/service buttons. It provides video and audio outputs.

You need to connect the video outputs to the SCART connecter. Red, Green, Blue, Video Sync and Video Gnd I believe. This can go straight into your TV.

You musn't connect the audio outputs to your tv though! They are already amplified, and can blow up your tv's speakers! Just hook up the sound outputs directly to a small speaker.

Oh yeah - And you need 12V, 0V and possibly 5V and -5V to power the MVS board.
Don't bother buying an arcade power supply, just use a PC power supply, as it can supply all of these voltages.

There are a few supergun projects out there on the web. Try to find some. But if you have any questions, I'll try to answer them.

Title: Re: NeoGeo MVS to TV
Post by: Venge on March 22, 2002, 09:56:16 am

Thanks for your time and the info, but I really need some kind of FAQ, or tutorial, preferably with diagrams. Something I can look at while I'm building the circut. I have some idea of what I'm getting into, but i'm no electrician. :)

Title: Re: NeoGeo MVS to TV
Post by: BobA on March 22, 2002, 03:49:03 pm

Here is a site with a really simple outline on how to use an MVS board at home.


http://www.geocities.com/Tokyo/Flats/7987/mvs.html

Hope that helps.

Bob

Title: Re: NeoGeo MVS to TV
Post by: Venger on March 22, 2002, 10:40:56 pm

Thank you very much. That's what I was looking for. Poppy thanks  you, right poppy? Woof!  :)

Title: Re: NeoGeo MVS to TV
Post by: Kilgore on March 25, 2002, 05:35:22 pm

There is a fellow who sells self made RGB to NTSC converters that have composite RCA and SVideo outputs.

Here is a recent Ebay auction:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1079842342

Here is his web page.  Look about half way down for more information:

http://www.jrok.com/

I have purchased one of these boards from him, but have not put it to use.  The quality of construction is very high.