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J-PAC Question
GameDork:
--- Quote from: SirPoonga on June 14, 2004, 09:58:58 pm ---You also need an arcadevga for the video.
--- End quote ---
Ultimarc says you don't need one of these do they?
I think the Project Arcade book says you don't either.
I was under the impression that the J-Pac took care of the video too.
microwrx:
You don't NEED one but you are better off with one. You need a video card that can send a 15kHz signal though.
The J-PAC amplifies the video signal from the PC video card and delivers it to the correct pins on the JAMMA edge connector. It can split a 31kHz VGA signal in half but you then end up with two images on the screen but to be useful you need to send it a 15kHz signal.
It's main function is as a keyboard encoder like the I-PAC but enabling connection to a JAMMA edge connector so you don't have to rewire the cabinet.
SirPeale:
There are a lot of video cards that can output a 15 KHz signal. However; only two that I know of that do it in Windows: the ArcadeVGA and cards based on the Trident Blade T64 chipset.
What I want to know is why more people haven't written these drivers. The information is certainly out there.
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