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Mame and Dreamcast in same cabinet

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null:
I have compiled all of the parts in order to build a fine mame cabinet and before I start putting it together I wanted to know if anyone had any suggestions or improvemesnt on my plan to incorperate a Dreamcast (mostly to play arcade fighters) into the cabinet along side the mame computer while still being able to use the same joysticks and buttons for both systems. I'm going to be using an ATI All-in-Wonder card to display mame from the computer onto a TV. My plan is to use a A/V switch box to toggle between the DC and Mame for the audio and video. For the controls I was going to splice the arcade control wires to an I-PAC and a pair of hacked DC controllers. Could it be possible if I could change what system the controls controlled with a switch of some sort?   I think this idea will work but I wanted to get an expert's opinion before I started.

Thanks in advance,

null

P.S. I am a complete beginner in wiring controls so please assume nothing.

freppa:
It shouldn't be a problem. Lots of people have done it. You have to use some type of switch though. I've heard some people using printerswitches and hacked printercables to wire their controls with good results.

look here:

http://www.arcadecontrols.org/yabbse/index.php?board=15;action=display;threadid=11422

and here

http://www.arcadecontrols.com/arcade_dreamcast.shtml

and here

http://www.arcadecontrols.com/arcade_consoles.shtml

/Freppa

djohng:
As far as switching between audio and video, I use a VGA box for the dreamcast, which has a PC input.

The box automatically senses when the DC is on and switch the PC video input off.

The VGA box is made by Performance/Interact.

abrannan:
I've never tried it, but you should be albe to achieve what you're looking for by switching the grounds.  Wire up the buttons to both your I-pac and your DC controllers.  Run the ground line from your controls to the common terminal of a two position switch from Radio Shack or suchlike.  Run the ground of the I-Pac to one side, and the ground from the DC controllers to the other.  When the switch is set to "I-pac" pressing a button will complete a circuit with the I-Pac, and the DC ground will remain disconnected.  This should prevent the whole "diode" hookup thing that others recommend.

But like I said, I've never actually tried it.  Someone please correct me if I'm making a large error somewhere.  I have an Engineering degree, but I got 'C's in the electronics courses.  If what I'm trying to describe is unclear, let me know and I'll try to put together a diagram or something.

eightbit:

--- Quote from: abrannan on October 29, 2003, 10:33:19 am ---I've never tried it, but you should be albe to achieve what you're looking for by switching the grounds.
--- End quote ---
This has been discussed here many times. Do a search on the archives and I think you'll find that the consensus is that its not that simple.

I've never tried it just read about it here many times. I'd say the consensus was the easiest reliable way was some kind of quick connect to plug in one interface or the other to the controls.

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