Hey guys I just got a neo-geo mvs 6 game cabinet and everything works fine, but one thing. I can't get credits on the right player. I hit the coin switch on either coin slot and it puts credits on the left player. Does anyone have any help on this. Thanks
I am a noobie that needs help!!
- Thread starter thmlrmg
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If you want the quickest fix (so you can just play two player games RIGHT NOW) turn on dip switch 7 on the board. Turns on Free Play. (See Link Below)
http://www.mikesarcade.com/cgi-bin/spies.cgi?action=url&type=dip&page=NeoGeo.txt
Sounds like coin switch two is wired to coin switch 1. Here's the pinout of the neo geo edge connector. Makes sense that if you trace the wires back from coin switch two, it will go to the spot mark Coin 1 on that pinout. If it's not that...well...then others can speculate.
http://stadium.weblogsinc.com/engadget/videos/how-to/JAMMA_pinout.pdf
http://www.mikesarcade.com/cgi-bin/spies.cgi?action=url&type=dip&page=NeoGeo.txt
Sounds like coin switch two is wired to coin switch 1. Here's the pinout of the neo geo edge connector. Makes sense that if you trace the wires back from coin switch two, it will go to the spot mark Coin 1 on that pinout. If it's not that...well...then others can speculate.
http://stadium.weblogsinc.com/engadget/videos/how-to/JAMMA_pinout.pdf
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xiao_haozi
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Just set your MVS to freeplay....
If playing PCBs, then make sure someone didn't just jump the two coin mech wires. Sounds like you just have player 1 coin leads going to both coin mechs.
Yes, I have been working in the electronics field for the past 20 years I just don't have any experience in the neo-geo world.
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Ok, sounds like you have a hardware problem if memory serves me right you can not configure the soft dips to behave the way you are describing.
You are going to have to look at the jamma harness pins 16 and T and see if they are independently wired to the coin mechanism as it seems pin 16 is only being used.
Mainman,
Thanks for the replies. I did check the schematic and i followed the green/black wire from the coin door up to the jamma connector and it is wired to pin T on the jamma connector and the yellow/black wire goes to pin 16. Where do I go from here?
Thanks for the replies. I did check the schematic and i followed the green/black wire from the coin door up to the jamma connector and it is wired to pin T on the jamma connector and the yellow/black wire goes to pin 16. Where do I go from here?
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If the wire is connected to the jamma harness the coin switch should add credits in game. Test it out. Make sure there is a ground on the switch as well.
It is adding credits to the game but it is adding credits to the left player not the right player. Both coin doors are crediting the left player. I have followed the wires and they are independantly wired to the correct pins on the jamma.
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Are the coin switches independent from one another in the door or is there a jumper between them? Also check the jamma harness and board to see if there is a jumper made between the 2 pins.
If there is no jumper and both switches are indeed separate from one another and both are connected to the correct pins on the jamma harness then there is a chance the board has a special bios that has a common coin switch. Check to see if you have a stock bios.
If there is no jumper and both switches are indeed separate from one another and both are connected to the correct pins on the jamma harness then there is a chance the board has a special bios that has a common coin switch. Check to see if you have a stock bios.
Nightmare Tony
*Account control passed, on to Tony's family.Ex Ro
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Certain bIOSes will behave differently. Think that sounds like a SPanish rom, an SPS2 bios. Get an SPU2 which is the US bios and that should solve it. SPJ2 is Japanese, and no idea how it would react in there.
a quick way to tell the bios:
grid scrreen on bootup, what color is the border?
green: 6 slot, an older bios
light blue: usa
dark blue: spanish
red: japanese
a quick way to tell the bios:
grid scrreen on bootup, what color is the border?
green: 6 slot, an older bios
light blue: usa
dark blue: spanish
red: japanese
wow, very good info here. I think you are correct when i boot up the grid screen is dark blue. where can I get an spu2 bios?
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If you have an EPROM programmer, you can program a replacement chip. Use a 27C1024 EPROM which is 120ns or faster.
Hell, if your BIOS chip is an EPROM then you can simply erase it and reprogram it. The code is available in the ROM dumps used for MAME.
RJ
PS: Thanks Tony! I added that tidbit to my repair logs site.
Hell, if your BIOS chip is an EPROM then you can simply erase it and reprogram it. The code is available in the ROM dumps used for MAME.
RJ
PS: Thanks Tony! I added that tidbit to my repair logs site.
J0e Musashi
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This is all madness. Just flick hard dip 2 and you'll be fixed.
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I don't think going from 2 to 4 coin chutes would fix anything.
J0e Musashi
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Nothing to do with 2 or 4 chutes. Dip 2 is Vs. Mode. Activating it activates the right side credit counter...
J0e Musashi
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EDIT. Dip 2 differs between regions. What you're saying is correct for a USA BIOS. I stand corrected.
Xian Xi said:
UK cabs only ever have one coin chute, so this cannot be the case.
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You're forgetting that in Link mode the cab is ONLY 1 player which is why when set to 4 coin chutes it only registers credits on the left side. When Link mode is off and is back to default it goes back to 2 coin chutes.
This could differ by region.
I also just tested it on my 2 slot and it's exactly how I said it was.
J0e Musashi
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Does differ by region for sure. Dip 2 can be coin switch or coin mode. I cannot help the OP based on this. Apologies.
Nightmare Tony
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Channelmaniac: no problem. random information that sticks out here 
feel free to put that. There is also an asian one with a yellow border I think from the book but had not seen that one ever, only remember reading about it. let me consult the manual sometime during lunchtime at work...
feel free to put that. There is also an asian one with a yellow border I think from the book but had not seen that one ever, only remember reading about it. let me consult the manual sometime during lunchtime at work...