He built a converter that will turn a PCB's RGB signal into a standard video signal.  Cool!  We're half way there.  With a video signal now I can use a TV card to input that signal and display it on the screen.  But wait!  There's a better (and cheaper) way.  I found a gizmo called the "V-Box" that will take any video signal (even through an s-video cable) and convert it directly to a VGA signal!!!  Cool!  The converter from jrok was $100 and the V-Box was $50 so the whole thing together was roughly $150.  Not too bad.  And the best thing is it works great!  It's not as clear and crisp as an RGB monitor would be, but works good enough to be very playable.  It was worth the money to make my cabinet JAMMA Compliant.

Here's a shot of the RGB converter from jrok:

And Here's a shot of the V-Box...

And here's some screenshots of X-Men Vs. Street Fighter working through the converters:

Pretty Cool!  Next was the wiring.  Happ Controls had a nice JAMMA harness with all the wires attached (and labeled) for $15 and was worth it.  Every wire on the harness was a different color so it was much easier to use than if I had attached all the wires myself.  Next I needed a way to switch between the controls coming from the JAMMA PCB and the game pads so I used 25pin (serial cable type) connectors to switch them to the control panel.  If that doesn't make sense here's a different explanation.  Basically my control panel needs to control either the game pads (Mame and other windows stuff), or it needs to control the JAMMA boards (the arcade motherboards).  It can't be hooked up to both of them at the same time so I needed a way to switch them back and forth.  Here's a picture of the final assembly...

Here you can see the JAMMA cables (not connected) in the center of the picture.  The game pads (currently connected) are on the left and right sides.  I had to re-wire the game pads to do this.  You'll notice the difference from the pictures on the interface page.  Next to the MS Sidewinders are some Super Nintendo game pads I wired up, so I can use my control panel with that system too.

One thing I plan on making is a circuit board to switch the JAMMA connectors and the game pad connectors electronically.  This way I won't have to open up the control panel and manually switch the connectors.  It's not a big deal, but it will be neat to be able to switch them with a flick of a switch.  8 )  (Note:  I finished the electronic switch, and it can now be seen in the Control Circuit section)

Here's one last shot of the whole thing hooked up.  The power supply is from Happ.  The jrok RGB converter is hidden a little out of view from the foot rest (lower right).  This is my Street Fighter II Turbo PCB.  Works Great!