This is Earth Ground, which is not the same as common ground on DC circuits. But keep in mind that if you rewire it back to MVS pinout that you will need a JAMMA to MVS board adapter to use that 1 slot in the MVS cab or get a multislot motherboard. All NeoGeo MVS units are almost fully JAMMA compatible; however, theyItem Description: Safely converts the standard NeoGeo MVS system pinout to work correctly in a standard JAMMA type arcade cabinet. Dipswitch for activating or disactivating Buttons 4,5 and 6 through Jamma or kick harness. The J-Pac allows a PC to connect to this connector in your jab, allowing video to be sent to the arcade cabinet monitor, controls to work, and more. For four button games, buttons 1-4 are connected via the JAMMA edge. Twine. Remember to connect the center pin on. This way you can swap other Jamma boards into the cab and play joystick games too, and not have to rewire the control panel to play T&F. I can submit the pinout for the two 1000in1 systems I have as well:D. 6 pin - RGB + Sync input lead. This is BeharBros ‘s latest addition to their on-going line of Neo Geo related paraphernalia that includes the VGA16, RGB16 and the upcoming consolized MVS. Changes: Female edge connector side. Multi-slot boards, use a different pinout based on Jamma. Using a harness with a live -5V connection should be fine (check first) 11 Audio Positive (mono) will accomidate mono fram a Jamma board to one speaker (if wired) Jamma2NeoGeo4SlotPinout. Re: MVS MV-1F motherboard: stereo via JAMMA?I realize the 48 in 1 is jamma so I will need to make a harness, all the ones I have seen have a jamma connection on one end & lose wires at the other end. There is no distortion or loss of signal quality and if there is, it's very minor. . All NeoGeo MVS units are almost fully JAMMA compatible; however, they have a small twist in their pinout scheme. The JAMMA connector is a 3. Controller Inputs: x2 Sega Saturn. The board was shipped from factory with an audio fix consisting of 2 jumper wires, going through. Kick 1 Player 1 2. Nov 14, 2019. Something like the JNX Big Red Adapter. 1,372. Mickey Juice Timid Neo Newbie. . Posts: 286 Joined: Sun Feb 19, 2012 9:32 am Location: United States. Weight : 60 g (2. Push it and see what happens. Correct. Hello , First i'm a newbie in the arcade stuff. Neo-Geo MVS JAMMA Buttons Question. MVS, whatever) send me the pinouts and dimensions of the connector, and I will post them here for the stickers. See JAMMA connector pinout. Emulation isn't accurate. Jamma harness wiring diagramJamma harness Jamma supergun geo neo arcade layout wiring mvs diagram pinout pcb harness game board connector slot daytona usa controller audioJamma wiring diagram board arcade connect power which sw shown test boards. 6 MB File. This item: BLEE Classical Arcade Video Game 60 in 1 PCB Jamma Board for CGA VGA Output. Joined Mar 14, 2001 Posts 54. The 2 slot, 4 slot and 6 slot are not JAMMA. The audio is balanced but really quiet so i'm going to attempt to replace the caps on it although i haven't done much electronics work before so any advice would be good. The 48 pin connector in this case is also used to hook up the kick buttons. G. Arcade cabinets wired to the JAMMA standard can be made to play all games built to this standard, simply by installing the circuit boards for the new game. Unused 9. It’s a card-edge style consisting of 56 total pins. Donor 2013. First, I'll start by saying that I'm fairly newb in the world of arcade setup. This is the larger version of the 1-slot motherboard that includes additio. Posted the pinouts for the Control Panel Molex connectors in the Downloads section. New posts New media New media comments New resources Latest activity. MV-1FZ RGB and Controller Pinout 4093 downloads 333. While the final game, Samarai Shodown 5, was recently released in 2004, the support of fans should keep the Neo going strong. The different placement of the service button on the MVS jamma harness gave me a headache when I built my supergun too. Super Gun Build. Here's the JAMMA pinout, basically connect each of the wires to the applicable source in your cab and you're good to go. ) It's not necessary, but it's definitely convenient if you plan to switch out boards a lot. I can get the "A" button to work sometimes, but that's. -Move 'Audio Ground' wire from Pin M -> Pin 27. Models. MVS edge connectors aren't fully JAMMA compliant depending on the model of the board. The components side (parts side) and the solder side. Contents. #2. - to the pcb is called a JAMMA wiring harness. Standard jamma harness also used for the jamma 60in1 boards. The Open MVS is a kit designed to consolize Neo Geo MV1C arcade boards. Nov 4, 2017. Download. The Neo Geo board supports four buttons per player. 187 inch (3. Centipede JAMMA adapter will allow an original Centipede PCB to work in a JAMMA wired cabinet. I am going to be consolizing an MV1A and was wondering if there was a place on the bottom I can tap the R, G, B, Sync, and controls for both players. Jul 27, 2016. The current pinout doesn't really matter as you will be replacing all that with jamma wiring. Downloads: Jamma vs. It has been corrected and updated. . To be honest - the 4 button cabinet is just about as good as the 6 button one - and involves less work. e. Remember to connect the center pin on the jacks to the output of the video encoder. RGB to Component, Video & S-video encoder board. Been googling and read most of the main SG guides out there (difference between Jamma/MVS connections/1/2/4 slot MVS etc) - it seems simple enough but I'm slightly confused with how to make it compatible with the MVS board and standard Jamma PCB's. com 12:23 PM - 10/17/2023. Reactions: kikaso. Re aligned cart pins for better contact. It should take both adapters to correct all the wiring differences, if that is how the pinouts are: Board -> Blue Elf adapter -> Jamma to MVS adapter -> cabinet harnessFrom there you can decide to keep it as JAMMA or rewire it back to MVS pinout. More sharing options. Although the process is the same as : building any other type of adaptor, the "random-raster-game : to JAMMA" conversion is so common that it has become known : colloquially as "Jammatization". PIN #A. 1-slot boards have jamma pinouts, so your cab maybe jamma also. MVS and Jamma pinouts are slightly different, so you'll need change the pinout each time you switch between the two. | 440-365-9906| Every joystick and button micro switch must be connected in the same manner. 187” Quick Disconnects PN: RA-WIRE-HARNESS ©RETROARCADES. All I had to do was rewire the 4th button from the kick harness to the JAMMA harness to make the 4th button work. MVS edge connectors aren't fully JAMMA compliant depending on the model of the board. 005: 1942: 1942 (alt) A Pinout for JAMMA Arcade game systems. Hi All, Can anyone please confirm for me the pinout of the power harness that connects power on the CPU board to J2 on the Jamit board? Mine has a weird setup that i believe is half missing. The multi slot units are different in, you guessed it, sound. or an MVS mobo in a JAMMA cabinet is problematic because of the. . . Thread starter supergoose; Start date Mar 27, 2003; S. I'm not talking about a neo, I'm talking about a MKII cabinet that was converted to Capcom vs SNK. For me this is the best and easiest I/O board to use. No need for an adapter (wall wart) to plug into the Raspberry Pi 3b+. New posts Search forums. JAMMA Pinout. Jul 13, 2009. As the majority of arcade games were designed in Japan at this time, JAMMA became the de facto world standard. Players 3 and 4 (joysticks and buttons 1-4, start, coin) are connected via the Hirose DF1B connector. 54mm. Caris Nautilus Guest. It's Capcoms unique pinout. Using a JAMMA harness inside an MVS cab to a K7193 monitor I'm not entirely sure what I'm doing wrong, but here's the scenario: I have an MVS cab with a 25" WG K7193, wired up to the MVS harness. First off I bought a MVS to JAMMA converter and Jamma extension cable from Jammaboards. I hooked a Neo Geo MVS 1-slot board up to a JAMMA harness without changing any wiring and it worked fine. First. Nov 3, 2008. Wiring Harness for MVS-4-25. I was wondering where I could get these parts and hopefully get some information on building such a machine. , in order to use my Super Dodge Ball. 古いタイトルによっては数字の割り振りが逆順になっている事があるので注意して下さい。. . Although Neo-Geo systems are JAMMA based, the MV-2F, MV-4F and MV-6F use different pinouts. Not for use with single slot Neo. SNK NEO GEO MVS to JAMMA Adapter with button remapper and line level Stereo sound out22 Reaction score 0 Location Pennsylvania Oct 27, 2008 #1 I have a NEO GEO MVS 4 slot cabinet that I was hoping to play Jamma and Jamma+ games on. or is it JAMMA proper and in need of alterations?I received a TMNT PCB and tested it out on my Neo Geo 1-Slot cab with a Jamma-MVS Converter. One is pictured to the right. Those Jamma adapters are intended for running T&F or HyperSports in a typical 2 player Jamma cab, mapping the run/jump buttons to player 1 and 2 buttons 1,2, and 3. All NeoGeo MVS units are almost fully JAMMA compatible; however, theyItem Description: Safely converts the standard NeoGeo MVS system pinout to work correctly in a standard JAMMA type arcade cabinet. Most boards which are capable of stereo have an additional header for it which can be line level or amplified. The version of the CBOX I decided on has all of the consolized Neo Geo MVS features of the previous iterations with one new feature: it can also play JAMMA PCBs. . in particular the E/27 positions have been used for a button instead of ground. Unfortunately, most classic games (games made before 1985) use unique pinouts and can’t be swapped easily with one another. . gamelife00 Rugal's Thug. Live (or Line), Neutral, and Ground. I would also like to mention some caution when using an MVS board. But just remember if you use it for MVS PCBs that the test switch will not function since it's expecting a JAMMA pinout. The King Prawn Marked Wolf. 4 Slot, standard jamma? Thread starter Caris Nautilus; Start date Jul 17, 2001; C. 8pin mini DIN connector for audio and video output (XRGB Mini pinout) 3. Some games<br />. . There was a time when all TVs came with only an antenna socket on their backs, and bringing any form of video input to them meant dicing with live-chassis power supplies. Even if you add that adapter, you have to add a -5V line from your power supply to either the adapter or the harness. Safely converts the standard NeoGeo MVS system pinout to work correctly in a standard JAMMA type arcade cabinet. The JAMMA connector is a . I have the Jamma pinout but would like to have it looking professional and not muck up the Jamma. if I remember correctly all the other slots use a different Jamma pinout that's close but it swaps two wires around I don't know if this can cause. And I can only assume that the instruction manual for the Rev B board are incorrect. While the machine does turn on, they informed me that they had to replace the previous PSU since it's broken. . I will aslo attach a photo of a sf2 jamma board and was hopeing you could tell me what/where the kick harness is. This means you can use the game select buttons. First, cut the ground wires that are going to pin 27 and connect them to pin 28 (or another ground pin on the harness) with the existing wires. JVS2JAMMA is perfectly clear in my head, but I've seen someone use it to refer to an IO board so I guess it's a little confusing. ) cut and lift the trace that goes from 2 to 3 until it comes off: 3) Let's move to the parts side of the board. All NeoGeo MVS units are almost fully JAMMA compatible; however, they have a small twist in their pinout scheme. Apparently I can fry the thing if I just use it directly since the voltage is too high. . It has been corrected and updated. 15/2/2002 Thanks to bernie1844 who pointed out a typo on the Jamma vs MVS . #1. Safely converts the standard NeoGeo MVS system pinout to work correctly in a standard JAMMA type arcade cabinet. The MVS (Multi Video System), as the Neo Geo was known to the coin-op industry, offered arcade operators the ability to put up to 6 different arcade titles into a single cabinet, a key economic consideration for operators with limited floorspace. If you want to change the board you just have to plug out the old one and plug in the new one, no need to be an expert. pdf), Text File. 60 MB. I was just looking at your pictures of the quick disconnects and that made me think back to why I didn't use those on my power connections. Case in point: With my Hyper 64 Rev 2 board, I set the power to Neo, but the sound to JAMMA. For example, 1942 and Ghosts n Goblins isn't JAMMA pinout. 25v ; Plug the pcb into the raspberry with the jamma connector facing out ; Put a heatsink on the golden part indicated with the heat symbol Location. This adapter features button remapping, different. Power, ground, joysticks, buttons, and more. #1. #2. Kick 2 Player 2 6. Catcopter. The JNX Atlas supports both CPS1 and CPS2 kick harnesses. I'm curious how others have handled this aspect of it. I purchased this with the intention of consolizing it and just haven't gotten around to doing it :( The board. Wed, March 11. 350W Reconditioned Power Supply for IGT Game King. 12/2/2002 I updated the MVS Jamma harness labels to make them easier to figure out which goes where. This adapter features button remapping, different game select options, amplified mono or stereo sound output and line level stereo sound. V4. Game Board Pinouts: GIF of JAMMA pinout. 2 on board, and I'm selling it along with an RGB-->S-Video and Composite conversion board (from arcademvs. Jan 20, 2020. Does anyone know if the MVS MV-1F motherboard outputs audio in stereo via the JAMMA edge or only via the dedicated speaker and headphone outputs? Top. Item Description: Safely converts the standard NeoGeo MVS system pinout to work correctly in a standard JAMMA type arcade cabinet. That is option [B] for sure. . Once you have the jamma harness, just wire it all up following the labels on the jamma edge connector to the relevant point to wire it to. " If you are lucky, the wires will already be bundled with zip-ties into sensible groupings. . You are correct that MVS boards are not 100 percent JAMMA compliant. This is a first attempt at a FAQ for the MVS hardware. 基本的にヒロセコネクタ準拠の表記をしています。. ) unlike the MV-1C as seen below. I'm looking at getting a 4 slot MVS board for my Atomiswave SD cab. JAMMA Harness w/” Quick Disconnects Ground wire to the ground loop and the appropriate JAMMA wire JAMMA Functional Connection Diagram. My problem is this / Ive just got my self a net city arcade cab with a pcb game wrestlefest. by emphatic » Wed Oct 26, 2011 12:35 pm. I also know that jammaboards sells a made to order mvs-to-jamma converter board. -Supports a voltmeter as well as the Negatron for adding -5v to your JAMMA board. Buttons 4-6 are connected via the Hirose DF1B connector. MVS YM2610 Pinout: May 09 2011 : MVS YM2610 to NEO-PCM Pinout : Guide Link This is the pinout between the PROG board cart slot on the MVS and the YM2610. This pinout is of course assuming you will be using a standard 6 button setup on your controls. It is also 100% compatible with 15Khz RGB video and offers Hi-Fi Stereo sound. but which ones? might make a nice addition to Nick the fury's. What you can't do is throw JAMMA or non-MVS boards into the mix without an adapter. Second, wire your sixth action button to the pin 27 location previously used by the relocated ground wire. I have a 2 slot cab that I want to turn into a SEGA ST-V. However, I do not want to rewire the cab to JAMMA, I would rather keep it wired for the 2-slot and use a JAMMA edge board to new harness that would allow me to. Neo Geo MVS Cart Slot Pinout for repairs, protos and conversionsSNK NEO GEO MVS TO JAMMA ADAPTER STEREO WWW. I just picked up my SNK MVS mini cab yesterday and I'm having an issue with playing a JAMMA PCB (the PCB does not use the -5 pinout). 100 inline connector - key at #3 position)----- 1 RED 2 3 KEY 4 GREEN 5 6 BLUE 7 8 VID GND 9 10 VSYNC 11 HSYNC This is the VIDEO connection. Qty: $ 22. norton9478. ARCANIAC. I have already wired and tried the TEST and SERVICE buttons as recommended. Charles, Missouri. Designed to redirect SNK Neo Geo MVS multi slots PCB signals to work properly in a JAMMA cabinet or with a Supergun. While I await repairs to my MVS 4-slot board I have seen some examples of collectors playing there MVS carts on a jamma super gun. I think some of the 1 slot boards have the JAMMA connector. net. x2 DB15 Neo-Geo (support 6 buttons) VIDEO/AUDIO OUTPUTS:The MV1C is jamma standard, if you are using an MVS>Jamma converter that's the problem. net 1,026 Entries Last Updated: May 07, 2004. Run over to Hard MVS, I'm sure they have more info an a pinout. The wiring is missing the -5volt, but it is wired for mono sound. Correct me if I am wrong. Only a single slot Neo is 100% JAMMA. Currently, it's hooked up to a. is it even possible ?? i got s cps2 board right now in that cab and iam getting a mvs 1 slot motherboard . JAMMA is a type of connector that most PCBs attach to, with a standard pinout. Joined Jan 3, 2018 Posts 91. 5 mm stereo connector or the 8 pin mini-DIN if the 3. -Move 'Test Switch' wire from Pin 15 -> Pin M. The MV-1B has a pin for pin connection (1-1, 2-2, 3-3, etc. File:Joypad pinout. pdf - Free download as PDF File (. Hey all, i just got a generic wood cabinet with a mvs 6 slot and 8 games. You will need to follow the pinout from the Unibios chip to the MV-1C bios. Its for the MV 1F board. Nov 3, 2008. . PIN #B. There are no comments to display. The majority of games use a subset of this pinout. Thread starter Mickey Juice; Start date Dec 29, 2004; M. #4. I know I had to replace it but until recently, I don't exactly know where to ask. Coin door inserts, etc. Post subject: MVS MV-1F motherboard: stereo via JAMMA? Posted: Thu Jan 17, 2019 10:59 pm . Would the same be true for the reverse (JAMMA in a MVS cab)? I modified the wiring diagram from HardMVS to highlight the differences. Not all arcades use the same number of. g. 005: 1942: 1942 (alt) APinout for JAMMA Arcade game systems. Qty: $ 6. The adapter basically just does that repinning for you. The only information available on the Internets is the two pinouts I posted. Uses an adapter which plugs into the Jamma edge connector, and the back of game cartridges. . Q: What does MVS stand for? A: MVS Stands for Multi Video System. org. DON'T SKIP THIS STEP, Put one of the ┳ pieces in pin 7 of the jamma harness ; WITHOUT THE PCB CONNECTED turn on the machine and adjust the voltage in pin 3 to 5. If nothing happens, then it could involve the wiring. not necessarily a problem in games that. 5 mm stereo connector or the 8 pin mini-DIN if the 3. I have one cabinet that began life as JAMMA, and was half-assedly converted to Neo at some point. You CAN run a mono output Neo Geo MVS board in a JAMMA cabinet. Originally came with the Namco Cyber Lead cabinet. For this you will need: I always get my finger boards from jammaboards honestly. This isn't really a 4-slot specific issue except to say the pinout is a bit more dense and complicated. I've been using my CMVS on my old TV directly through RGB scart, and it worked perfectly, however after getting a new TV that doesn't have scart inputs, I thought getting an OSSC would do the trick. Get it as soon as tue jul 20. On a MULTISLOT system game selecting is only available during the attract mode sequence. The pinouts are slightly different between the JAMMA standard and Neo Geo MVS standard. Location. JAMMA is a standard connector used on many arcade boards to simplify conversion of cabinets from one game to another. The adapter I am using is the JAMMA extension harness from Twisted Quarter on eBay right now. . I tested the four slot in my. gris996. In general there will be 3 conductors for single phase AC. I always get my finger boards from jammaboards honestly. Pinout for JAMMA Arcade game systems. I. Designed to redirect SNK Neo Geo MVS multi slots PCB signals to work properly inside your JAMMA Cabinet or with a Supergun. Then plug the Jamma wiring harness into the top of the Galaga to jamma. 3. If a game board has the same pinout as another game that swapping boards is just a matter of installing the game board in the existing cabinet, since it uses the same pins. Schematics and Wiring Diagrams 34 Pages, 2. com. G'day i have just received an snk mvs motherboard it is the mv-1f, should i make up an mvs harness and if i do does this board give me stereo or do ihave to go the the special left right connectors on the board or are they just an option?? Sorry very new 2 this all help appreciated, i have been g. 1. There are only some exceptions like NeoGeo MVS which have stereo on the Jamma edge (but then it is no longer called Jamma, but MVS pinout), There pin L is L+ and Pin 10 is R+) Here is a list of most. . MVS does not use the typical connection matrix of Mahjong panels. Mar 17, 2001 #1. Then I did a search on google, and couldn't find anything there either. The JAMMA PCB to NeoGNeo-Geo MVS JAMMA Buttons Question. V3. PDF file. The 2 in 1 MVS/JAMMA CBOX. The BeharBros just announced a new supergun specifically designed for use with Neo Geo MVS boards, called “ Shogun “. . Media. Thread starter Jaelus; Start date Jan 24, 2010;Okay, before I get flamed. Solder Side Pin Pin Parts Side GROUND A 1 GROUND GROUND B 2 GROUND +5VDC C 3 +5VDC +5VDC D 4 +5VDC -5VDC E 5 -5VDC +12VDC F 6 +12VDC. OP . I will hve my neo 6 slot mvs cabinet next week, (thanks to vektrologic) Ive had one before but when I played jamma games the sound was very loud, is there. Neo-Geo MVS = Neo-Geo Multi Video System. I bought a MKII converted cab last week. A Multi-JAMMA splitter. The edge connector seats onto the pcb's pinout fingers. If you don't plan on ever swapping your MVS board out, then there's no need. The. Champion. -It converts JAMMA mono audio to Neo GEO MVS format. Connect the above pins to the input on the video encoder. Joined Nov 16, 2001 PostsPull the pinout for the JAMMA edge for the 6. アーケード基板のハーネス表です。. 1 Encoder. I just bought a neo 25" candy cab wich is wired for mvs stereo sound. The Scart2Arc30 features: a powerful 6 watt stereo audio amplifier that supports JAMMA mono, MVS (3 wire) stereo, screw terminals; separate line level audio input and. Parsec has a built-in NTSC video converter and RGB buffer chips that provide composite and s-video as well as RGB output. com). MV-1FZ Battery Mod 3238 downloads 127. ChuChu Flamingo. Connecting a NeoGeo MVS system directly into a JAMMA connection will damage the MVS audio. These are from a very hard to read copy of the schematics, so I hope that I got the pin names correct. The software and hardware works together to listen for signals on each of these pins and make a logic decision in the. I wasn't sure. Pressing the. JAMMA only supports 3 buttons and Tekken uses more, so the extra buttons get connected through that connector. On my MV 1F board the "Z80 error" was caused by the connectivity between Z80 and Ram, like GadgetUK said. I realized that the 1st player controls (any of them) were. Solder Side Parts Side Ground A 1 Ground Ground B 2 Ground +5V C 3 +5V +5V D 4 +5V -5V E 5 -5V +12V F 6 +12V Key H 7 Key Meter 2 J 8. Hi there! Gosh, loving it here everyone is super helpful with my SuperGun Pet project, thanks in advance as I am just a gal with the internet at my disposal and some basic soldering skills. 31768. One other problem im facing is one of the main arcades i want is neo geo mvs 1 slot but i know that the jamma harness only supports buttons 1 2 and 3 and button 4 comes from the kick harness which the neo geo board. The pinout can be changed between Pandora/Blue Elf and JAMMA pass through simply by moving two jumpers. US | Holland Computers Inc. 1 Sold side; 1. Item Description: Safely converts the standard NeoGeo MVS system pinout to work correctly in a standard JAMMA type arcade cabinet. alundra. Hopefully the arcade generation will spread to the younger kids of today. 2) I checked the PSU connections (5V+, 12v (no need for -5v on MVS) and I am getting a solid connection 3) Checked my on/ off switch and there is no bottleneck in power flow. I'm currently in the process of consolizing my MV-1C board, and need some assistance; I'm wiring up AV to a DIN 8 connector, as my hardware is capable of accepting RGB video directly, and I'm following this guide. All NeoGeo MVS units are almost fully JAMMA compatible; however, theyArcade Pinouts ionpoool. 15/2/2002. The Golden Tee pinouts redefined many of the common pin meanings. SNK Neo Geo MVS 1-Slot Arcade Circuit Board, PCB, Works. Although. jamma buttons. CLRH2O n00b. 23 USD. #2. Mar 14, 2001 #1. I`ve added some ICs for switching pinout lines. Don't hold me to that. I'm currently in the process of consolizing my MV-1C board, and need some assistance; I'm wiring up AV to a DIN 8 connector, as my hardware is capable of accepting RGB video directly, and I'm following this guide. Posts: 293 Joined: Sun Feb 19, 2012 9:32 am Location: United States. Album Silly crap Added by bobbyb13 Date added Oct 31, 2022 View count 46 Comment count 0 Rating 0. 1-Slot boards, use the JAMMA standard with only. Neo Geo Stereo wired board > JAMMA cab = works, but only one channel of audio. On a MULTISLOT system the joystick port select buttons and JAMMA connector select game. MVS. JAMMA RGB-Pi Pinout Serie4. #1. Most boards which are capable of stereo have an additional header for it which can be line level or amplified. From checking out pinouts on Jamma vs. This board can play one Neo Geo MVS cartridge at a time. Os puede venir muy bien si queréis montaros una bart. Features three different action buttons layouts, amplified mono. $1250. I hook it up to my cabinet and I noticed that the buttons don't really work. . Kick 1 Player 2 5. Everything is working great with the CPS2 games. It is also possible to alter the wiring of this connector so it also act as a button remapper. Also anyone know how the fourth button is wired? Standard JAMMA only allows for 3 buttons for each player. Check out the Downloads section for pinouts and manuals, and the Project section for information on modifying your MVS setup or Jamma harness.