Here are photographs from the board inside the Panasonic JR200UP. At the centre, little to the left, the MN1800 processor can be seen, a clone of Motorola 6802. Another very important chip is the MN1544, a 4-bit co-processor with its own memory, located in the bottom right section. Click on the images to see the high resolution versions, or open them in a new tab to download the full-size originals. I have photographed these images myself and they can be used freely.