MGCD

Blue0524 · Post by **Blue0524** » February 19th, 2018, 3:19 pm

I just picked up one of these over the weekend. Do any of you guys have one and have successfully used it in a Sega Astro? Did you make adjustments to an extension harness or use an adapter. Looking for some suggestions.

Blue0524 · Post by **Blue0524** » February 21st, 2018, 1:56 am

Anyone?

Post by **Rossyra** » February 21st, 2018, 8:35 am

Dave_K. has written about it on his blog, perhaps this will be useful?

http://arcadefever.blogspot.co.uk/2010/ ... art-1.html

Maybe you could send a polite PM if you are really stuck?

https://forum.arcadeotaku.com/memberlis ... file&u=133

Post by **Sp33dFr34k** » February 21st, 2018, 8:56 am

I have one of these, used it in a NAC. What are you looking for exactly, how the controls are hooked up? FrancoB helped me out with this thing by making a jamma passthrough I believe. If you want I can check for you?

Blue0524 · Post by **Blue0524** » February 22nd, 2018, 4:49 pm

Sp33dFr34k wrote:I have one of these, used it in a NAC. What are you looking for exactly, how the controls are hooked up? FrancoB helped me out with this thing by making a jamma passthrough I believe. If you want I can check for you?

That’s would be awesome thank you! I was told to buy a JNX Atlas adapter and that it worked well but he could remember how everything was hooked up.

Post by **Sp33dFr34k** » February 22nd, 2018, 5:20 pm

I actually found a great thread on KLOV regarding the pinout of the MGCD.

https://forums.arcade-museum.com/showth ... p?t=282555

Bottom line, all 7 buttons for P1 and P2 are wired to the edge connector so you'd need to hook up these buttons through for example your kick harness connector.

Also, it needs -5v present.

This is basically all I've done to mine, just checked. As I have buttons 4 and 5 wired to my edge connector inside the cab and only have 6 buttons per player on my panel, I have only hooked up both buttons 6 from the jamma passthrough to my kick connector.

Hope I am making sense?

Blue0524 · Post by **Blue0524** » February 22nd, 2018, 5:26 pm

The problem is is that my control panel is the one with 3 buttons and not 6. Would it just be wise to get one with 6 buttons. I have yet to hook up -5v but i will have some time to do it this weekend. Do i NEED to have all of those buttons hooked up?

Blue0524 · Post by **Blue0524** » February 22nd, 2018, 5:27 pm

Rossyra wrote:Dave_K. has written about it on his blog, perhaps this will be useful?

http://arcadefever.blogspot.co.uk/2010/ ... art-1.html

Maybe you could send a polite PM if you are really stuck?

https://forum.arcadeotaku.com/memberlis ... file&u=133

Thank you. I went ahead and sent him a message.

Post by **Sp33dFr34k** » February 22nd, 2018, 5:38 pm

Blue0524 wrote:The problem is is that my control panel is the one with 3 buttons and not 6. Would it just be wise to get one with 6 buttons. I have yet to hook up -5v but i will have some time to do it this weekend. Do i NEED to have all of those buttons hooked up?

Well, depends on the games you'd like to play. The majority will be fine with 3 buttons per player, but if you want to play some of the fighters on the DC, you'll want 6 buttons per player. If you don't, then you're fine for inputs at least. Bare in mind that there are more games which require 4 buttons for A/B/X/Y though.

Blue0524 · Post by **Blue0524** » February 22nd, 2018, 6:06 pm

I’m mainly looking to play the shmups that the DC offers.

kevlo9 · Post by **kevlo9** » March 20th, 2018, 5:32 pm

Hello.

What is the -5v used for? Controls?

I'm trying to get one of these working in my Astro City cab and everything works correctly except for the controls.

Thanks.

Post by **Sp33dFr34k** » March 20th, 2018, 7:57 pm

No, the -5v does not affect controls. If you have a standard NAC PSU (the low one), it should supply -5v, do you know the model of the PSU you're using? Do you have the C23/C24 connector ports on the MGCD hooked up to the normal P1/P2 ports on the Dreamcast? A pic of your setup would help.

kevlo9 · Post by **kevlo9** » March 20th, 2018, 8:25 pm

Sp33dFr34k wrote:No, the -5v does not affect controls. If you have a standard NAC PSU (the low one), it should supply -5v, do you know the model of the PSU you're using? Do you have the C23/C24 connector ports on the MGCD hooked up to the normal P1/P2 ports on the Dreamcast? A pic of your setup would help.

Hello.

I have a 400-5198 PSU.

Everything is working (audio/video) minus the controls...currently setup for timed play.

I think I have the dip settings correct (see below and attached image3)...

1st Bank of dip switches
1-8 (all on)

2nd Bank of dip switches
1-2 (off), 3 (on), 4 (off), 5-12 (on)

I purchased a jamma extender to modify so I can keep the harness in my Astro City intact.

I removed pins A27 & A28 and tied them to A1 (GND) and B27 & B28 and tied them B1 (GND)...see attached images 1 & 2.

I can't get the controls to work. Like I mentioned before everything is working fine and I can credit up and see the onscreen display/countdown timer.

Any help is greatly appreciated (as I'm really new to this) or if anyone can make an extender harness that will work with this, please let me know.

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