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Neo-Geo MVS to Xbox cab project
XYXZYZ:
--- Quote from: Malenko on April 27, 2010, 09:50:12 am --- Theres a buncha pix of my 2 and 4 slots in my sig.
--- End quote ---
Say, do those middle panels come off easily? There aren't any screws or anything on my cabinet.
TEKNYNE:
Sorry,
Alright I have not personally messed with a NeoGeo mvs cab. But did build a consolized mvs board a long time ago.
As far as I can tell. You will have to do a little rewiring or get a adapter to go inline as the wiring is different for speaker audio. JAMMA is mono the MVS is stereo.
With the XBox to JAMMA adapter for the speaker portion hooked up you will most likely fry something if it has connections for the speaker that is strait JAMMA.
As L and 10 pins have negative and positive voltages on them for JAMMA and the MVS has positive voltages on L and 10. So these connections will have to be removed or rewired to safely connect.
The low voltage audio only (positive mono) is on pin 11 on both JAMMA and MVS so that should be safe.
Sorry I am not very good at explaining things some one else might be able to explain better, also all of this depends on the audio setup of the cab. Is it amplified mono or strait speaker wire connections from the harness etc. Would be good to let people know.
satoshi_matrix:
Wow, you guys are immensely helpful. TEKNYNE, I'm not sure I completely follow what your saying. I've confirmed that the cab is indeed an MVS-1-25. According to the hardMVS FAQ, "The 1 slot boards are the closest to JAMMA, but have the addition of a 4th button. Some of the 1 slot boards have an external connector to run Stereo sound instead of the mono JAMMA sound."
I of course do not yet have the cabinet yet (will be picking it up soon) but I do know that the Cabinet has two speakers so it must either be amplified mono or stereo. The seller claims the cabinet is near mint, so I assume the speakers are working mint as well. I certainly do not want to blow them. Are you saying that if I hook up the Jamma adapter to the MVS I will almost certainly cause them to blow? If so, is there a way around that to still get stereo sound? If not, I suppose mono is fine. Sorry if I'm casuing you to repeat yourself, but please explain what I would need to do.
If it helps, this is the adapter I plan on using.
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=260578408824&ssPageName=STRK:MEWAX:IT
How big are the stock buttons on the MVS? Looking at that empty control panel, those button holes look huge, way way bigger than could fit Sanwa 30 mm buttons.
XYXZYZ:
I don't see any kick harness support on that adapter, but you're doing a padhack and just using the adapter for AV, right?
Go to HardMVS and get the JAMMA vs MVS comparison chart.
http://www.hardmvs.com/manuals/Jamma2NeoGeo4SlotPinout.pdf
All you're doing is making sure the right signal goes to the corresponding pin on the MVS harness, so you may have to cut some traces and route some jumper wires to get everything where it should be. For example, pin 15 (test switch) will have to be rerouted to pin M, and cut the trace on pin M (audio ground) and reroute that signal to one of the ground pins.
Audio wasn't a problem for me, just rout your left signal to pin L and your right signal to pin 10 and you should be good to go. The MVS grounds the speakers to plain old ground, nothing special there. I wouldn't worry about blowing the speakers.
And speaking of ground, one headache those Xbox controllers offer is multiple grounds. I had to do some fancy alligator clipping to get my controls working right.
satoshi_matrix:
I asked the seller for more info on the Jamma to Xbox board and I was emailed the pdf manual. XYXZYZ maybe you or someone else can make sense of it and help me understand it. I've uploaded it to rapidshare.
http://rapidshare.com/files/381435701/TBX01_-_XBox_Console_Timer_Board_User_Manual.pdf.html
As well, please for someone who has an MVS, how big are the stuck buttons across? It looks like the stock buttons on the cab I plan to buy have been replaced and I want to replace them once again with Sanwa 30mm buttons if I'm able.