Anyone know the MVS cart port functions?

N

ninja maestro

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As in the solder points on the underside of the edge connectors. Reason being, if I cant fix my six slot, I will just consolize a 1 slot, and if this happens, I would like to keep the wires from the joypad terminals hidden, so wiring them to the pins from the MVS edge connectors would be the tidiest method.

So anyone know what they are? Or a previous thread that might have them listed?

Help a noob out, all I wanna do is play some neo! :)
 
Gummy Bear

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ninja maestro said:
As in the solder points on the underside of the edge connectors. Reason being, if I cant fix my six slot, I will just consolize a 1 slot, and if this happens, I would like to keep the wires from the joypad terminals hidden, so wiring them to the pins from the MVS edge connectors would be the tidiest method.

So anyone know what they are? Or a previous thread that might have them listed?

Help a noob out, all I wanna do is play some neo! :)
Click to expand...


Not quite sure I follow you, mate....

You want to solder your joypad connectors to the cart port?
 
N

ninja maestro

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Ok, we all know the functions of the pins on a 56 pin jamma connector.....I want to know the function of the pins on the mvs connector. Well, not every last one, just where i would solder the buttons and directions to.
 
N

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I dont think you get what im after, as I could only find jamma connector diagrams at hardmvs. Im gonna try and host a pic, brb.
 
loopyeddie

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touch a multimeter with a continuity test to the pad on the JAMMA connector. Then start poking around on the board or the pins on the cart port. When the meter beeps - you have continuity.
 
N

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I want to know which of the pins on mvs pcbs is A,B, up, down ect, cos then I can hardwire my controller ports to the mvs cartridge ports on my 1 slot.
 
Dr. Jigglin

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The controls don't come off of the MVS cart boards do they?
 
Razoola

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You don't understand the MVS hardware. Outputs come from the JAMMA connector, not the MVS cart. All the MVS cart does is hold the game data.

Raz
 
Moose

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I know what your trying to say. You want to hardwire the controller right to the Cart slot, right?
DURr guys!

That would be some monotinous work.
I cant seem to find any pinouts for you, (i looked some up, and heres what I found for Sega Genesis, which didnt make much sense to me..http://www.gamesx.com/cartouts/gennycart.htm

so i don't know if using the cart slot pins for a joystick would be beneficial, but if you really want to try, just get a multimeter, put on needle to player 1 up on the JAMMA edge, for instance, and then start testing pins on the cart slot, until it beeps. Theres Player one up. Best of luck to you!
 
SpamYouToDeath

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It'll never happen. The cart slot has no pins in common with the controller besides GND.
 
A

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You need to solder the controller ports to the JAMMA connector, not the cart connector. It is also much easier to do so in the big spots of the JAMMA connector, so trying to do so in the cart connector is not only impossible, but pointless.
 
El Capitan

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You can easily make a tidy console wiring to the Jamma connector - find some of supergoose's work.

Or if you use a large one slot, it has joystick ports already.
 
A

Adamaki

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ninja maestro said:
Ok, we all know the functions of the pins on a 56 pin jamma connector.....I want to know the function of the pins on the mvs connector. Well, not every last one, just where i would solder the buttons and directions to.
Click to expand...

lol if that were possible there would be no need for an mvs mobo! :loco:
 
J0e Musashi

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Adamaki said:
lol if that were possible there would be no need for an mvs mobo! :loco:
Click to expand...

How do you work that one out? You'd still need the mobo for video and sound no? I thought it was quite a good idea, despite it not being feasible.
 
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A

Amano Jacu

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J0e Musashi said:
How do you work that one out? You'd still need the mobo for video and sound no? I thought it was quit a good idea, despite it not being feasible.
Click to expand...

Well, maybe there are other pins in the cart connector for RGB and audio too so just solder some cables there and that's all! ;)
 
norton9478

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This reminds me of today's lesson kids.

Never smoke crack.
 
A

Adamaki

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J0e Musashi said:
How do you work that one out? You'd still need the mobo for video and sound no? I thought it was quite a good idea, despite it not being feasible.
Click to expand...

I know it's not feasible, hence my comment and the loco smiley at the end! I was just trying to point out what a crazy idea it is.
 
N

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Converted carts and superguns were probably regarded as 'crazy' at one point. Anyway, cheers everyone. I guess I thought it was possible largely due to the consolized mv1b that kpj had on ebay recently. I didnt notice anything wired to the jamma connector, and as its such as small motherboard, I really cant imagine where else they (wires) might go.
 
norton9478

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ninja maestro said:
Converted carts and superguns were probably regarded as 'crazy' at one point. Anyway, cheers everyone. I guess I thought it was possible largely due to the consolized mv1b that kpj had on ebay recently. I didnt notice anything wired to the jamma connector, and as its such as small motherboard, I really cant imagine where else they (wires) might go.
Click to expand...

The conncections are not made to the Jamma connector per Se, but they are soldered to points connected to the Jamma Connector. Whip out a coninutity tester and you will find the points.
 
MKL

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Why didn't you just ask where to solder the input wires instead of assuming things?

It's very easy: you want to solder to the SIP resistors behind the jamma connector. You can easily follow most traces from the jamma pins to the SIP resistors pins butof course I advise you to get a multimeter to be 100% sure.
 
N

ninja maestro

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Cheers.....I already traced them back that far, and that was when i couldnt trace them any further, which was when this topic began. Ive decided to go with soldering to the jamma connector, as its the easiest and quickest option. Thanks for all the input guys!
 
A

Adamaki

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ninja maestro said:
Converted carts and superguns were probably regarded as 'crazy' at one point.
Click to expand...

I meant 'crazy' as in 'not possible'.

Some people just don't understand my sense of humour :oh_no:
 
MKL

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ninja maestro said:
Cheers.....I already traced them back that far, and that was when i couldnt trace them any further
Click to expand...

This is the path of the controller inputs on an MVS board:

Code: 
           1K                 220
5v------/\/\/\/------|------/\/\/\/------I/O controller IC
                     |
                     |
                     |
                      / Pushbutton
                     /
                     |
                     |
                     |
                     |
                   GROUND

Both the 1k and 220 ohm resistors are inside the SIP resistors I mentioned. You can only trace each input line as far back as the I/O controller IC, which on a MV-1B is called NEO-SDR-T and you wouldn't want to solder to its legs for several reasons:

- it's not the appropriate point (you're on the other side of the 220 resistor)
- the legs are very small and too close to each other
- it's a surface-mounted chip so the wiring would be visible on parts side thus defeating your purpose :glee:
 
Gummy Bear

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ninja maestro said:
Converted carts and superguns were probably regarded as 'crazy' at one point. Anyway, cheers everyone. I guess I thought it was possible largely due to the consolized mv1b that kpj had on ebay recently. I didnt notice anything wired to the jamma connector, and as its such as small motherboard, I really cant imagine where else they (wires) might go.
Click to expand...


Ooohoho! That ole' Kpj has got all sorts of fancy tricks up his sleeves, mate.


I always solder to the JAMMA connector.
Bigger surface contact = stronger joints.

The fact that my soldering iron is older than me and is the size of a chisel has nothing to do with the above. ;)
 
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