V9990
here's a picture of the 3do's main board:
I have found the proof that the V9990 was used on a commercial pachinko machine(like a bet coin machine) in Japan. Its name was "Ikoma memorial II"(「生駒記念II」). It was a mechanical machine with a 4'' LCD screen on the middle of the frontal panel. I have not found a better picture of it:
Later it was emulated for an unknown games console. The pachinko game was collected on a pack by a company named Parlor:
There is a video of the simulated machine, so we can imagine what was shown on that small 4-inch screen:
https://www.youtube.com/watch?v=mrr-AFzTWbg
On this link, a Japanese guy has taken away the screen of one of these real pachinko machines to make himself a PS2 monitor....
Here is the google translated page.
On it you can see some pictures of the controller PCB for the little LCD:
