SGI IrisVision add-in 3D accelerator for PC (1990) – Vintage Computers and 3D Acceleration: After years, I’ve finished a long in-depth write-up about an interesting piece of history - the SGI IrisVision 3D accelerator from 1990. It was a scaled-down version of the graphics board set from the SGI Personal IRIS and was intended for PC compatibles (16-bit AT bus) and PS/2 computers (MCA). The whole thing started when IBM licensed the graphics hardware and the IRIS GL 3D API for their IBM RS/...