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Small project: mame-ing my Capcom Impress

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Ummon:
Well, I've been doing some small wiring on my Impress. First up was the controls. I didn't want to re-wire everything so am using the existing wiring hooked up to a GPwiz. I'm having some issue here, as Windows sees the unit but keypresses aren't registered.

Ummon:
Just for fun, here's a picture of the monitor chassis. I was waiting on getting some torx bits to get into these parts, and I'm glad I did. Whereas initially I didn't think it was necessary, I found the chassis wasn't secured. It was screwed in - the screw lower-right - but there's a flange on the left the chassis fits under, and it was on top of it. The pcb had lifted or bent a little by the screw.

Ummon:
Next I'm wiring the monitor to the VGA port of the PC. I have this neat little deal that has a six-pin header on one end and a VGA port on the other.

Ummon:
And here are the rest.

Ummon:
Now, I'm having some trouble with the video. The color is great. But the image is garbled. JAMMA is composite sync....from the board, right? But from the PC it's not. I think this is where my problem is, yes?


*the first image is with the sync wire attached to the V pin; the second image is with the sync wire attached to the H/C pin. Also, I forgot to mention that I'm using Advancemame here on auto.

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