OPTi Plug-N-Play Joystick Controller Free Driver Download

This file came from the Diamond ftp site suggested by OPTi themselves. My card was unbadged OEM with the 931 chip. I didn't use the "Setup.exe" maybe I should have done. Installed it using the "Install New Hardware" in control panel. Had to be aggressive when Windows said it did not recommend using the driver I wanted. I said I wanted it anyway. It all took a couple of hours going round and round but at the end of it everything worked.