I have not had the best of luck getting those cheapy LCD adapters to sync on nintendo boards. I haven't tried the vs. but i assume its the same
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You will have to invert the video as you said. but not the sync. as the sync is proper negative sync.
https://www.mikesarcade.com/cgi-bin/store.pl?sku=VS2JAMMA This will invert the video and provide audio amplification but I don't believe it fixes the sync issue also it only allows you to play half the gameboard at a time, as you have noted.
If you were motivated enough you could build your own adapter, or beg someone to do it.
Technical of how that needs to be done:
Need to break out both game outputs/inputs.
Need to seperate the sync out to vsync/hsync and recombine to vsync with proper vblanking to allow sync of cheapy LCD adapter
Dual audio amps.
Thanks iankellogg.
I am fairly tech savvy and pretty good with the iron, so i am confident in my building skills. I have already purchased the edge connectors to make the harness off the unisystem board myself so I have that part covered. If you could elaborate a bit on the comment:
"
seperate the sync out to vsync/hsync and recombine to vsync with proper vblanking to allow sync of cheapy LCD adapter"
I am not an expert in video signals but I am pretty sure if you point me to a build example or to someone/someplace who can explain it in detail, I think I could do it myself.
I was eyeing up two of these boards to fix the inverted color issue, then feeding the output of those into a cga to vga adapters to feed the flat screens. If you think this will not work, I will need to explore different options.
Thanks,
Jimmie