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DIY mahjong controller?

Following this, cause Jong.

Also, I have some spare button caps (the small ones) if you eventually need them and this spicy MVS conversion of Final Romance 2 😊

IMG_3117.jpeg

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d00mdrew said:
Following this, cause Jong.

Also, I have some spare button caps (the small ones) if you eventually need them and this spicy MVS conversion of Final Romance 2 😊

IMG_3117.jpeg

IMG_3118.jpeg

IMG_3119.jpeg
Click to expand...

Didn't know anyone did a MVS conversion. Think I have FR2 on NGC, but not sure how to go about testing the mahjong controller on AES or NGC systems.. I do have a SD Loader modded unit around here in one of the piles, wonder if there's homebrew that could test it (or if I could develop such).

My current effort is going to be making an adapter, pulling the missing pins from the side connector on a MV1C (or 1B) and seeing if I can inject that into the DB15 port of a supergun using a DB15 male to female breakout board.
 
Kujako said:
Didn't know anyone did a MVS conversion. Think I have FR2 on NGC, but not sure how to go about testing the mahjong controller on AES or NGC systems.. I do have a SD Loader modded unit around here in one of the piles, wonder if there's homebrew that could test it (or if I could develop such).

My current effort is going to be making an adapter, pulling the missing pins from the side connector on a MV1C (or 1B) and seeing if I can inject that into the DB15 port of a supergun using a DB15 male to female breakout board.
Click to expand...
Its a poor conversion without cdda audio track.
 
pierpa86 said:
Its a poor conversion without cdda audio track.
Click to expand...
That tracks, still might pick up a copy if I stumble upon one.

For the mahjong controller, this is where I'm at.

Digging through my stuff piles I have a couple simple prototype boards and a DB15 pass through & breakout PCB. Thinking I can pull GND and VCC from the supergun DB15 (pin 1 and 8 respectively) to feed the 74LS06 that I'll have on a daughter board. Then I just need three wires running to CN1 on the MV1C/1B.
IMG_2063.png
 
Found one wiring mistake so far, hooked it all up and at least there's no magic smoke coming out.
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But it looks like I have something wrong, H through N register correctly, but A to G and PON, CHI, KAN, ROW, REACH are reversed...
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Reversed the order of the three wires going to the MV1C CN1 and I think it's all up and running!

(still no idea what the AES/MVS switch on this weird controller does)
 
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Looks like an awesome project. I still lament getting rid of my Neo Geo mahjong controller, and for way too cheap. They're prohibitively expensive now.
 
rastansaga1987 said:
Looks like an awesome project. I still lament getting rid of my Neo Geo mahjong controller, and for way too cheap. They're prohibitively expensive now.
Click to expand...
Yeah, I think the original mahjong controllers are going for around $1,200 USD. I think if I had one I would have gotten frustrated with it not working with a supergun, @pierpa86 was able to point me in the right direction to build the above adapter to pull in the three missing pins. Now I'm just struggling to remember how to use kicad to build out the PCB for the famicom controller.
 
I think the difficult bit will be drawing the footprints for the buttons.
 
Fluffy said:
I think the difficult bit will be drawing the footprints for the buttons.
Click to expand...
Well they're just exposed traces for the carbon pads to contact. EasyEDA has a good template for it, but I'm still struggling with KiCAD. It's just been too long since I last used it and I don't remember anything. May have to do a refresher tutorial when I have time...

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