Christian wrote: > works in 16bpp, anyone with a system that works in 8bbp can give me a > hand to test this mode? I have a system that has a 4bpp monochrome display and the driver doesn't work. After initializing, it turns on the display[1] but I fail to get any content onto it. I extended the array with the display characteristics according to an existing driver, but to no avail. I'm pretty lost there, since I have zero prior experience with framebuffers or video drivers, so I'd appreciate any hint that might get me towards debugging this. Uli [1] p_lcd_reg->lcd_control |= LCD_CONTROL_GO;