I cannot get 256 but I can buy and sell a Japanese YIS-805 128 at 55000 yen. It's fully functional except a few keys which I hope I can fix by washing the contact.
It's quite easy to install additional 128kb of RAM onto the board. I even managed to install 2mb of RAM instead of original 128kb and the mod can be easily reverted if needed.
I cannot get 256 but I can buy and sell a Japanese YIS-805 128 at 55000 yen. It's fully functional except a few keys which I hope I can fix by washing the contact.
Hi Takamichi, I would be interested in the YIS805/128. Does it have 1 or 2 drives?