SavannahLion

Unfortunately, there was nothing I could do about U9. The board was sold as a "parts" board by a surplus store sometime between 1990 and 1994.

Sorry for the necro bump but.... That's my board. I bought it sometime around '94 give or take a couple of years from a catalogue. In my initial research to try and discover what the board is, I never came across any information for the TutorVision. I had a sneaky suspicion there was more to the board than what I found, but was stymied. Without anything else, I just stashed it away again.