Hello, I have succesfully installed GRASS4.0 on Convex C220 with o.s. 10.0.2 . I have not installed driver for Tektronik, but emulation with X11 (XDRIVER) work quite well. Bruno -------------- Bruno Minoja Cilea Via R. Sanzio 4 Segrate Milano Italia E_MAIL : minoja at icil64.cilea.it (131.175.1.5) ---------------